/* ========================================
   Luxurious Modern Theme System
   ======================================== */

/* ========================================
   RESET & FOUNDATION
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ========================================
   THEME VARIABLES - Light Mode (Default)
   ======================================== */
:root {
    /* Primary Color System - Luxurious Gradient */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --primary-glow: rgba(99, 102, 241, 0.15);
    
    /* Background System - Clean & Elegant */
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --surface: #ffffff;
    --surface-hover: #fafafa;
    
    /* Border System - Subtle & Refined */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --border-subtle: rgba(0, 0, 0, 0.04);
    
    /* Text System - High Contrast */
    --text: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;
    
    /* Semantic Colors */
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    /* Shadows - Luxurious Depth */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.1);
    
    /* Spacing System - Generous & Elegant */
    --spacing-2xs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 20px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
    
    /* Typography System - Clean Hierarchy */
    --font-xs: 11px;
    --font-sm: 12px;
    --font-base: 14px;
    --font-md: 15px;
    --font-lg: 16px;
    --font-xl: 18px;
    --font-2xl: 20px;
    --font-3xl: 24px;
    --font-4xl: 30px;
    
    /* Border Radius - Smooth & Modern */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;
    
    /* Transition - Smooth & Elegant */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-theme: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   DARK THEME VARIABLES
   ======================================== */
[data-theme="dark"] {
    /* Primary Color System - Luxurious Dark Mode */
    --primary: #818cf8;
    --primary-light: #a5b4fc;
    --primary-dark: #6366f1;
    --primary-glow: rgba(129, 140, 248, 0.15);
    
    /* Background System - Dark & Sophisticated */
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --surface: #1e293b;
    --surface-hover: #334155;
    
    /* Border System - Subtle Dark */
    --border: #334155;
    --border-light: #475569;
    --border-subtle: rgba(255, 255, 255, 0.04);
    
    /* Text System - Dark Mode Contrast */
    --text: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --text-inverse: #0f172a;
    
    /* Semantic Colors - Dark Mode */
    --success-light: rgba(16, 185, 129, 0.1);
    --warning-light: rgba(245, 158, 11, 0.1);
    --danger-light: rgba(239, 68, 68, 0.1);
    --info-light: rgba(59, 130, 246, 0.1);
    
    /* Shadows - Dark Mode Depth */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.7);
}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-theme), color var(--transition-theme);
}

/* ========================================
   LAYOUT SYSTEM
   ======================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    min-height: 100vh;
    height: auto;
    width: 100%;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.flex { display: flex; }
.flex-1 { flex: 1; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: var(--spacing-xs); }
.gap-12 { gap: var(--spacing-sm); }
.gap-16 { gap: var(--spacing-md); }
.gap-24 { gap: var(--spacing-xl); }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-secondary { color: var(--text-secondary); }
.text-danger { color: var(--danger); }
.text-sm { font-size: var(--font-sm); }
.text-xs { font-size: var(--font-xs); }
.text-lg { font-size: var(--font-lg); }
.font-bold { font-weight: 600; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.mb-4 { margin-bottom: var(--spacing-2xs); }
.mb-8 { margin-bottom: var(--spacing-xs); }
.mb-12 { margin-bottom: var(--spacing-sm); }
.mb-16 { margin-bottom: var(--spacing-md); }
.mb-24 { margin-bottom: var(--spacing-xl); }
.p-12 { padding: var(--spacing-sm); }
.p-16 { padding: var(--spacing-md); }

/* ========================================
   ALERT SYSTEM
   ======================================== */
.alert {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-size: var(--font-sm);
    font-weight: 500;
    border: 1px solid transparent;
    transition: all var(--transition-base);
}

.alert-error {
    background: var(--danger-light);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.alert-success {
    background: var(--success-light);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

/* ========================================
   SIDEBAR - Clean Navigation
   ======================================== */
.sidebar {
    width: 220px;
    padding: var(--spacing-xl) var(--spacing-md);
    position: sticky;
    top: 0;
    height: 100vh;
    background: var(--bg-secondary);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.logo {
    padding: 0 var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.5px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    min-height: 48px;
}

.logo-image {
    max-height: 36px;
    max-width: 120px;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 4px;
}

.logo-text {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text);
    font-size: var(--font-md);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-base);
    position: relative;
}

.nav-item:hover {
    background: var(--surface-hover);
    color: var(--primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: var(--primary-glow);
    color: var(--primary);
    font-weight: 600;
}

.nav-item span:first-child {
    font-size: 20px;
}

.badge {
    position: absolute;
    top: 8px;
    right: 12px;
    background: var(--primary);
    color: var(--text-inverse);
    font-size: 10px;
    padding: 2px 6px;
    border-radius: var(--radius-full);
    font-weight: 700;
    min-width: 18px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

/* Desktop Compose Button */
.compose-btn-sidebar {
    display: block;
    width: calc(100% - 2 * var(--spacing-sm));
    margin: 0 var(--spacing-sm) var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.compose-btn-sidebar:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

@media (max-width: 500px) {
    .compose-btn-sidebar {
        display: none;
    }
}

/* User Info */
.user-info {
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    color: inherit;
    background: var(--surface);
    border: 1px solid var(--border);
}

.user-info:hover {
    background: var(--surface-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* User Menu Container */
.user-menu {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Logout Button */
.logout-form {
    width: 100%;
}

.logout-btn {
    width: 100%;
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    font-size: var(--font-base);
    font-family: inherit;
}

.logout-btn:hover {
    background: var(--danger-light);
    border-color: var(--danger);
    color: var(--danger);
}

.logout-btn span:first-child {
    font-size: var(--font-lg);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

.avatar-small {
    width: 36px;
    height: 36px;
    font-size: var(--font-sm);
}

.avatar-link, .post-author-link, .comment-author-link {
    text-decoration: none;
    color: inherit;
}

/* Auth Buttons Container */
.auth-buttons {
    margin-top: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Auth Button Base */
.auth-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    font-size: var(--font-base);
    font-weight: 500;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

/* Login Button */
.auth-btn-login {
    background: var(--primary-gradient);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

.auth-btn-login:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.auth-btn-login:active {
    transform: translateY(0);
}

/* Register Button */
.auth-btn-register {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}

.auth-btn-register:hover {
    background: var(--surface-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    font-size: var(--font-md);
    line-height: 1.4;
}

.user-username {
    color: var(--text-muted);
    font-size: var(--font-sm);
    line-height: 1.4;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    z-index: 500;
}

.theme-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.theme-toggle-btn:active {
    transform: scale(0.95);
}

.theme-toggle-btn svg {
    width: 22px;
    height: 22px;
    transition: transform var(--transition-base);
}

[data-theme="dark"] .theme-toggle-btn svg {
    transform: rotate(180deg);
}

/* ========================================
   MAIN CONTENT - Focus on Content
   ======================================== */
.main {
    flex: 1;
    max-width: 680px;
    min-width: 0;
    min-height: 100vh;
    background: var(--surface);
    border-right: 1px solid var(--border);
    border-left: 1px solid var(--border);
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.header {
    position: sticky;
    top: 0;
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0 var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    z-index: 50;
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    height: 56px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text);
}

.header-subtitle {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    margin-left: var(--spacing-sm);
}

.refresh-btn {
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--primary) 0%, #0056b3 100%);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.3);
}

.refresh-btn:hover {
    background: linear-gradient(135deg, #0056b3 0%, #003d80 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.4);
}

.refresh-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(0, 123, 255, 0.3);
}

.refresh-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

@media (max-width: 768px) {
    .refresh-btn span:last-child {
        display: none;
    }
    
    .refresh-btn {
        padding: 8px;
        border-radius: 50%;
    }
}

.refresh-icon {
    animation: spin 2s linear infinite;
}

.refresh-btn:not(:disabled):hover .refresh-icon {
    animation: spin 0.5s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.tweets-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tweet-item {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.load-more-container {
    padding: var(--spacing-lg);
    text-align: center;
}

.load-more-btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--primary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.2s;
}

.load-more-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.load-more-icon {
    transition: transform 0.2s;
}

.load-more-btn:hover .load-more-icon {
    transform: translateY(2px);
}

.loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    color: var(--text-secondary);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.header-title {
    padding: var(--spacing-md) 0;
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text);
}

.back-btn {
    color: var(--text);
    text-decoration: none;
    font-size: var(--font-lg);
    padding: var(--spacing-xs);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    transition: all var(--transition-base);
}

.back-btn:hover {
    background: var(--surface-hover);
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
}

.tab {
    flex: 1;
    padding: var(--spacing-md) 0;
    text-align: center;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: var(--font-md);
    font-weight: 500;
    transition: all var(--transition-base);
    position: relative;
}

.tab:hover {
    color: var(--text);
}

.tab.active {
    color: var(--primary);
    font-weight: 600;
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 2px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

/* ========================================
   COMPOSE - Clean Input Area
   ======================================== */
.compose {
    padding: var(--spacing-lg);
    border-bottom: 8px solid var(--bg-tertiary);
    display: flex;
    gap: var(--spacing-md);
    background: var(--surface);
    transition: background-color var(--transition-theme);
}

.compose-content {
    flex: 1;
    min-width: 0;
}

.compose-title {
    width: 100%;
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: var(--font-md);
    padding: var(--spacing-sm) var(--spacing-md);
    outline: none;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-base);
}

.compose-title::placeholder {
    color: var(--text-muted);
}

.compose-title:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.compose textarea {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: var(--font-lg);
    resize: none;
    outline: none;
    font-family: inherit;
    line-height: 1.6;
    min-height: 80px;
    max-height: 400px;
    transition: height var(--transition-base);
    overflow-y: auto;
}

.compose textarea::placeholder {
    color: var(--text-muted);
}

.compose-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border);
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.compose-actions-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    position: relative;
}

.compose-actions-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.char-counter {
    font-size: var(--font-xs);
    font-weight: 500;
    color: var(--text-muted);
    padding: var(--spacing-2xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    user-select: none;
    min-width: 70px;
    text-align: right;
}

.compose-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    min-width: 80px;
    height: 36px;
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.compose-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.compose-btn:active:not(:disabled) {
    transform: translateY(-1px);
}

.compose-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--border);
    box-shadow: none;
}

.exceed-warning {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2xs);
    color: var(--danger);
    font-size: var(--font-sm);
    font-weight: 500;
    padding: var(--spacing-2xs) var(--spacing-xs);
    background: var(--danger-light);
    border-radius: var(--radius-sm);
}

/* ========================================
   MEDIA UPLOAD - Rich Media Support
   ======================================== */
.compose-media {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

.upload-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xs);
    max-width: 240px;
    margin-bottom: var(--spacing-md);
}

.upload-grid-item {
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    background: var(--surface-hover);
    border: 1px dashed var(--border);
}

.upload-grid-item.add-photo {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px dashed var(--border);
    background: transparent;
}

.upload-grid-item.add-photo:hover {
    background: var(--primary-glow);
    border-color: var(--primary);
    transform: scale(1.02);
}

.upload-grid-item.add-photo:active {
    transform: scale(0.98);
}

.upload-icon {
    font-size: 24px;
}

.upload-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.upload-grid-item.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.upload-grid-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: rgba(220, 53, 69, 0.9);
    border: 2px solid white;
    border-radius: 50%;
    color: white;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    z-index: 10;
}

.upload-grid-item:hover .remove-btn {
    opacity: 1;
}

.upload-grid-item .remove-btn:hover {
    background: rgba(220, 53, 69, 1);
    transform: scale(1.1);
}

.upload-grid-item .remove-btn:active {
    transform: scale(0.95);
}

.upload-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.upload-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.upload-btn:hover {
    background: var(--primary-glow);
    border-color: var(--primary);
    color: var(--primary);
}

.upload-btn span:first-child {
    font-size: 16px;
}

.link-input-wrapper {
    flex: 1;
    min-width: 120px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0 var(--spacing-sm);
    transition: all var(--transition-base);
}

.link-input-wrapper:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.link-icon {
    font-size: 14px;
    color: var(--text-muted);
}

.link-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    padding: var(--spacing-xs) 0;
    font-size: var(--font-sm);
    color: var(--text);
}

.link-input::placeholder {
    color: var(--text-muted);
}

.media-preview {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--surface-hover);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    display: none;
}

.media-preview.active {
    display: block;
}

.media-preview-item {
    margin-bottom: var(--spacing-sm);
}

.media-preview-item:last-child {
    margin-bottom: 0;
}

.media-preview-audio {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.media-preview-audio audio {
    flex: 1;
    max-width: 100%;
}

.media-preview-video {
    max-width: 100%;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.media-preview-video video {
    width: 100%;
    display: block;
}

.media-preview-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--surface);
    border-radius: var(--radius-sm);
}

.media-preview-link-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.media-preview-link-info {
    flex: 1;
    min-width: 0;
}

.media-preview-link-title {
    font-weight: 600;
    font-size: var(--font-sm);
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.media-preview-link-url {
    font-size: var(--font-xs);
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========================================
   EMPTY STATE - Clean & Simple
   ======================================== */
.empty-state {
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-md);
}

.divider {
    height: 8px;
    background: var(--bg-tertiary);
    margin: 0;
}

/* ========================================
   POST CARD - Content First
   ======================================== */
.post {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
    cursor: pointer;
    background: var(--surface);
}

.post:hover {
    background: var(--surface-hover);
    transform: translateX(2px);
}

.post-detail {
    cursor: default;
    border-bottom: 8px solid var(--bg-tertiary);
    padding: var(--spacing-lg);
}

.post-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.post-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    width: 100%;
}

.post-author {
    font-weight: 600;
    font-size: var(--font-md);
    color: var(--text);
    white-space: nowrap;
    transition: color var(--transition-base);
}

.post-author:hover {
    color: var(--primary);
}

.post-meta {
    color: var(--text-muted);
    font-size: var(--font-sm);
    white-space: nowrap;
}

.post-title {
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: 600;
    margin-bottom: 4px;  /* 减少标题下方间距 */
    margin-top: var(--spacing-xs);
    line-height: 1.3;
    color: var(--text);
}

.post-title-link {
    color: var(--text);
    text-decoration: none;
}

.post-title-link:hover {
    color: var(--primary);
}

.post-text {
    font-size: clamp(14px, 1.7vw, 16px);
    line-height: 1.6;
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    margin-left: 0;
    padding-top: 0;
    padding-left: 0;
    text-indent: 0;
    word-wrap: break-word;
    word-break: break-word;
    color: var(--text);
    white-space: normal;
    clear: none;
}

/* 空的 post-text 不占额外空间 - 关键修复 */
.post-text:empty {
    margin: 0 !important;
    padding: 0 !important;
    line-height: 0 !important;
    min-height: 0 !important;
    height: 0 !important;
}

/* 当 post-text-truncated 为空时，post-text 不占空间 */
.post-text:has(.post-text-truncated:empty) {
    margin: 0 !important;
    padding: 0 !important;
    line-height: 0 !important;
    min-height: 0 !important;
    height: 0 !important;
    overflow: hidden;
}

/* 只包含 br 或空标签的 post-text */
.post-text:has(> br:only-child),
.post-text:has(> p:empty),
.post-text:has(> div:empty),
.post-text > br:only-child,
.post-text > p:empty,
.post-text > div:empty {
    margin: 0 !important;
    padding: 0 !important;
    line-height: 0 !important;
    min-height: 0 !important;
}

.post-text.collapsed {
    max-height: 84px;
    overflow: hidden;
}

.post-text a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.post-text a:hover {
    text-decoration: underline;
}

.post-text .hashtag {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    background: rgba(var(--primary-rgb), 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.post-text .hashtag:hover {
    background: rgba(var(--primary-rgb), 0.2);
    text-decoration: none;
}

.inline-code {
    background: var(--bg-tertiary);
    color: var(--accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    border: 1px solid var(--border);
}

.code-block {
    background: #1e1e1e;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin: 12px 0;
    overflow-x: auto;
    position: relative;
}

.code-block::before {
    content: attr(data-lang);
    position: absolute;
    top: 8px;
    right: 12px;
    font-size: 12px;
    color: #888;
    text-transform: uppercase;
}

.code-block code {
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
    color: #d4d4d4;
    white-space: pre;
}

.toggle-content-btn {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: var(--font-sm);
    font-weight: 500;
    padding: 0;
    margin-top: var(--spacing-xs);
    transition: all var(--transition-base);
}

.toggle-content-btn:hover {
    text-decoration: underline;
}

.read-more-link {
    display: inline-block;
    color: var(--primary);
    font-size: var(--font-sm);
    font-weight: 500;
    text-decoration: none;
    margin-top: 4px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all var(--transition-base);
    line-height: 1.6;
}

.read-more-link:hover {
    text-decoration: underline;
    background: rgba(var(--primary-rgb), 0.1);
}

.read-more-link:active {
    transform: scale(0.98);
}

@media (hover: none) {
    .read-more-link:hover {
        background: transparent;
    }
    
    .read-more-link:active {
        background: rgba(var(--primary-rgb), 0.15);
    }
}

.post-text.truncated {
    max-height: none;
    overflow: visible;
}

.post-text.full {
    max-height: none;
}

.post-metadata {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xs);
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.post-actions {
    display: flex;
    justify-content: space-between;
    max-width: 400px;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-lg);
    font-size: var(--font-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.action-btn:hover {
    color: var(--primary);
    background: var(--primary-glow);
    transform: translateY(-1px);
}

.action-btn.liked {
    color: var(--danger);
}

.action-btn.retweeted {
    color: var(--success);
}

.dropdown-actions {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: var(--spacing-xs);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    min-width: 160px;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    overflow: hidden;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    background: transparent;
    border: none;
    color: var(--text);
    cursor: pointer;
    font-size: var(--font-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.dropdown-item:hover {
    background: var(--surface-hover);
}

.dropdown-item.danger {
    color: var(--danger);
}

/* ========================================
   COMMENT SECTION - Clean & Hierarchical
   ======================================== */
.comment-section {
    padding: var(--spacing-lg);
    background: var(--surface);
}

.compose-comment {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background: var(--surface-hover);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.compose-comment textarea {
    width: 100%;
    min-height: 80px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: var(--font-sm);
    resize: vertical;
    outline: none;
    transition: all var(--transition-base);
    font-family: inherit;
    line-height: 1.5;
}

.compose-comment textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.compose-comment textarea::placeholder {
    color: var(--text-muted);
}

.comment-form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-subtle);
}

.comment-tools {
    display: flex;
    gap: var(--spacing-2xs);
}

.tool-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 16px;
    color: var(--text-muted);
    transition: all var(--transition-base);
}

.tool-btn:hover {
    background: var(--surface-hover);
    color: var(--primary);
}

.comment-form-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.section-title {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.comment {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-base);
}

.comment:hover {
    background: var(--surface-hover);
}

.comment-content {
    flex: 1;
    min-width: 0;
}

.comment-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.comment-author {
    font-weight: 600;
    font-size: var(--font-sm);
    color: var(--text);
}

.comment-text.post-text {
    font-size: var(--font-sm);
    line-height: 1.6;
    color: var(--text);
}

.comment-actions {
    margin-top: var(--spacing-xs);
}

/* ========================================
   PAGINATION - Simple
   ======================================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl) 0;
}

.page-link {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-sm);
    transition: all var(--transition-base);
    background: var(--surface);
}

.page-link:hover {
    background: var(--surface-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.page-link:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    color: var(--text-muted);
    font-size: var(--font-sm);
}

/* ========================================
   RIGHT SIDEBAR - Minimal
   ======================================== */
.right-sidebar {
    width: 300px;
    padding: var(--spacing-xl) var(--spacing-lg);
    flex-shrink: 0;
}

.search-box, .search-form {
    position: relative;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
    z-index: 1;
}

.search-box input, .search-form input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 40px;
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text);
    font-size: var(--font-sm);
    outline: none;
    transition: all var(--transition-base);
}

.search-box input:focus, .search-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.search-box input::placeholder, .search-form input::placeholder {
    color: var(--text-muted);
}

.search-submit-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    padding: 6px 16px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.search-submit-btn:hover {
    background: var(--primary-dark);
}

@media (max-width: 768px) {
    .search-submit-btn {
        display: none;
    }
}

.widget {
    background: var(--surface);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.widget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.widget-badge {
    padding: 2px 8px;
    font-size: 10px;
    font-weight: 600;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.widget-badge.badge-secondary {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
}

.widget-badge.badge-success {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
}

.widget-badge.badge-warning {
    background: linear-gradient(135deg, #ffc107 0%, #e0a800 100%);
    color: #1a1a1a;
}

.widget-badge.badge-info {
    background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
}

.tips-widget {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    border-color: rgba(99, 102, 241, 0.2);
}

.tips-list {
    padding: var(--spacing-sm);
}

.tip-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.tip-item:hover {
    background: rgba(99, 102, 241, 0.1);
    transform: translateX(4px);
}

.tip-icon {
    font-size: var(--font-lg);
    flex-shrink: 0;
}

.tip-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tip-title {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text);
}

.tip-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

.stats-widget {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(251, 191, 36, 0.05) 100%);
    border-color: rgba(16, 185, 129, 0.2);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--primary);
}

.stat-icon {
    font-size: 24px;
    padding: 8px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.1);
}

.stat-icon-primary {
    background: rgba(99, 102, 241, 0.1);
}

.stat-icon-success {
    background: rgba(16, 185, 129, 0.1);
}

.stat-icon-warning {
    background: rgba(251, 191, 36, 0.1);
}

.stat-icon-info {
    background: rgba(59, 130, 246, 0.1);
}

.stat-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.stat-value {
    font-size: var(--font-lg);
    font-weight: 700;
    color: var(--text);
}

.stat-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.widget-title {
    font-size: var(--font-md);
    font-weight: 600;
    color: var(--text);
    margin: 0;
}

.widget-more-link {
    font-size: var(--font-sm);
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-base);
    padding: 4px 12px;
    border-radius: 16px;
}

.widget-more-link:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-dark);
    transform: translateX(2px);
}

.widget-item {
    padding: var(--spacing-md) var(--spacing-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    position: relative;
    min-height: 56px;
    box-sizing: border-box;
}

.widget-item:hover {
    background: var(--surface-hover);
}

.widget-item:last-child {
    border-bottom: none;
}

.widget-item:last-child::after {
    display: none;
}

.widget-item::after {
    content: '';
    display: block;
    height: 1px;
    background: var(--border);
    position: absolute;
    bottom: 0;
    left: var(--spacing-lg);
    right: var(--spacing-lg);
}

.hashtag-rank {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

.hashtag-rank.top-1 {
    background: linear-gradient(135deg, #ff3859 0%, #ff6975 100%);
}

.hashtag-rank.top-2 {
    background: linear-gradient(135deg, #ff7043 0%, #ffa050 100%);
}

.hashtag-rank.top-3 {
    background: linear-gradient(135deg, #ffa940 0%, #ffc847 100%);
}

.hashtag-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-right: var(--spacing-sm);
}

.hashtag-name {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--primary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
}

.hashtag-count {
    font-size: var(--font-xs);
    color: var(--text-muted);
    white-space: nowrap;
}

.widget-empty {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-sm);
}

@media (max-width: 768px) {
    .widget-item {
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: 48px;
    }
    
    .hashtag-rank {
        min-width: 24px;
        height: 24px;
        font-size: 11px;
    }
    
    .hashtag-name {
        font-size: 13px;
        line-height: 1.4;
    }
    
    .hashtag-count {
        font-size: 11px;
    }
    
    .widget-item::after {
        left: var(--spacing-md);
        right: var(--spacing-md);
    }
}

.follow-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.follow-btn {
    margin-left: auto;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    flex-shrink: 0;
    font-size: var(--font-xs);
}

.follow-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.follow-btn.following {
    background: var(--border);
}

.follow-btn.following:hover {
    background: var(--danger);
}

/* ========================================
   AUTH PAGES - Minimal & Clean
   ======================================== */
.auth-container {
    max-width: 400px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-logo {
    font-size: var(--font-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-2xl);
    text-align: center;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-title {
    font-size: var(--font-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    color: var(--text);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.auth-input {
    padding: var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: var(--font-md);
    outline: none;
    transition: all var(--transition-base);
    font-weight: 400;
}

.auth-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.auth-input::placeholder {
    color: var(--text-muted);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.validation-message {
    display: none;
    font-size: var(--font-xs);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-top: -4px;
}

.validation-message.error {
    color: var(--danger);
    background: var(--danger-light);
}

.validation-message.success {
    color: var(--success);
    background: var(--success-light);
}

.input-with-counter {
    position: relative;
}

.input-with-counter .char-counter {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-xs);
    color: var(--text-muted);
    pointer-events: none;
    transition: color var(--transition-base);
}

.auth-form .char-counter {
    font-size: var(--font-xs);
    color: var(--text-muted);
    text-align: right;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-base);
}

.auth-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.auth-btn.secondary {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.auth-btn.secondary:hover {
    background: var(--primary-glow);
}

.auth-link {
    margin-top: var(--spacing-xl);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.auth-link a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-link a:hover {
    text-decoration: underline;
}

.auth-hint {
    padding: var(--spacing-sm);
    background: var(--surface-hover);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.auth-hint p {
    font-size: var(--font-xs);
    color: var(--text-muted);
    margin: var(--spacing-2xs) 0;
}

.error {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--danger-light);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    color: var(--danger);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-sm);
    font-weight: 500;
}

.success {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--success-light);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    color: var(--success);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-sm);
    font-weight: 500;
}

/* ========================================
   PROFILE PAGE - Clean & Focused
   ======================================== */
.profile-header {
    height: 180px;
    background: var(--primary-gradient);
    position: relative;
}

.profile-info {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    border-bottom: 8px solid var(--bg-tertiary);
    background: var(--surface);
    position: relative;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-2xl);
    font-weight: 700;
    margin-top: -60px;
    border: 4px solid var(--surface);
    color: var(--text-inverse);
    position: relative;
    z-index: 10;
    box-shadow: var(--shadow-lg);
}

.profile-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.edit-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    font-size: var(--font-sm);
    transition: all var(--transition-base);
}

.edit-btn:hover {
    background: var(--surface-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.profile-name {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-top: var(--spacing-sm);
    color: var(--text);
}

.profile-username {
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.profile-bio {
    margin-top: var(--spacing-md);
    font-size: var(--font-sm);
    line-height: 1.6;
    color: var(--text);
}

.profile-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.stat {
    font-size: var(--font-sm);
}

.stat strong {
    color: var(--text);
    font-weight: 600;
}

.stat span {
    color: var(--text-muted);
}

/* ========================================
   NOTIFICATIONS - Simple & Clear
   ======================================== */
.notification {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.notification:hover {
    background: var(--surface-hover);
}

.notification.unread {
    background: var(--primary-glow);
}

.notification-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 16px;
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
    min-width: 0;
}

.notification-text {
    font-size: var(--font-sm);
    font-weight: 400;
}

/* ========================================
   ADMIN PANEL - Clean & Functional
   ======================================== */
.admin-container {
    padding: var(--spacing-xl);
}

.admin-section {
    margin-bottom: var(--spacing-2xl);
}

.admin-title {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.post-item-admin {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    background: var(--surface);
    transition: all var(--transition-base);
}

.post-item-admin:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.post-content-admin {
    flex: 1;
}

.post-actions-admin {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.admin-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-size: var(--font-xs);
    font-weight: 600;
    transition: all var(--transition-base);
}

.admin-btn:hover {
    transform: translateY(-1px);
}

.admin-btn-danger {
    background: var(--danger);
    color: var(--text-inverse);
}

.admin-btn-danger:hover {
    background: #dc143c;
}

.admin-btn-primary {
    background: var(--primary);
    color: var(--text-inverse);
}

.admin-btn-primary:hover {
    background: var(--primary-dark);
}

.admin-btn-secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    text-decoration: none;
    display: inline-block;
}

.admin-btn-secondary:hover {
    background: var(--surface-hover);
    border-color: var(--primary);
    color: var(--primary);
}

/* ========================================
   EDIT MODAL - Minimal
   ======================================== */
.edit-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.edit-modal-content {
    background: var(--surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    max-width: 480px;
    width: 100%;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-xl);
    animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.edit-modal-content textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: var(--font-sm);
    resize: vertical;
    outline: none;
    transition: all var(--transition-base);
}

.edit-modal-content textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.edit-modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* ========================================
   RESPONSIVE DESIGN - Mobile First
   ======================================== */
@media (max-width: 1024px) {
    .right-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: auto;
        min-width: 64px;
        padding: var(--spacing-md) 0;
    }
    
    .nav-item {
        padding: var(--spacing-sm) var(--spacing-xs);
        justify-content: center;
    }
    
    .nav-item span:last-child {
        display: none;
    }
    
    .nav-item span:first-child {
        font-size: 18px;
    }
    
    .user-details {
        display: none;
    }
    
    .theme-toggle-btn {
        right: 16px;
        bottom: 80px;
    }
}

@media (max-width: 500px) {
    html, body {
        height: 100%;
    }
    
    .container {
        flex-direction: column;
        height: auto;
        min-height: 100%;
        width: 100%;
    }
    
    .sidebar {
        display: none !important;
    }
    
    .logo {
        display: none;
    }
    
    .nav {
        display: none;
    }
    
    .nav-item {
        display: none;
    }
    
    .user-info {
        display: none !important;
    }
    
    .main {
        max-width: none;
        padding-bottom: 96px;
        width: 100%;
        min-height: calc(100vh - 60px);
        flex: 1;
        border-right: none;
        border-left: none;
        margin-top: 0;
    }
    
    .post {
        padding: var(--spacing-md);
    }
    
    .compose {
        padding: var(--spacing-md);
    }
    
    .compose textarea {
        min-height: 80px;
        font-size: var(--font-md);
    }
    
    .char-counter {
        font-size: var(--font-xs);
    }
    
    .compose-btn {
        min-width: 72px;
        height: 32px;
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-xs);
    }
    
    .compose-footer {
        gap: var(--spacing-xs);
    }
    
    .upload-grid {
        max-width: 100%;
    }
    
    .upload-grid-item {
        aspect-ratio: 1;
    }
    
    .upload-row {
        gap: var(--spacing-xs);
    }
    
    .upload-btn {
        padding: var(--spacing-xs) var(--spacing-xs);
        font-size: 11px;
    }
    
    .upload-btn span:first-child {
        font-size: 14px;
    }
    
    .link-input-wrapper {
        min-width: 100px;
    }
    
    .header {
        padding: 0 var(--spacing-md);
        position: sticky;
        top: 0;
        z-index: 50;
        background: rgba(255, 255, 255, 0.98);
    }
    
    .profile-info {
        padding: 0 var(--spacing-md) var(--spacing-lg);
    }
    
    .auth-container {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .auth-title {
        font-size: var(--font-lg);
    }
    
    .right-sidebar {
        display: none;
    }
    
    .widget {
        display: block;
        margin-bottom: var(--spacing-md);
    }
    
    .post-title {
        font-size: var(--font-md);
    }
    
    .post-text {
        font-size: var(--font-sm);
    }
    
    .compose-comment {
        padding: var(--spacing-md);
    }
    
    .compose-comment textarea {
        min-height: 80px;
    }
    
    .comment-form-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .comment-tools {
        justify-content: center;
    }
    
    .comment-form-right {
        justify-content: space-between;
    }
    
    .tool-btn {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }
    
    .theme-toggle-btn {
        width: 44px;
        height: 44px;
        right: 12px;
        bottom: 72px;
    }
}

/* Dark theme mobile navigation bar */
@media (max-width: 500px) {
    [data-theme="dark"] .mobile-bottom-nav {
        background: rgba(30, 41, 59, 0.95);
        border: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3), 0 4px 20px rgba(0, 0, 0, 0.2);
    }
    
    [data-theme="dark"] .mobile-nav-item:hover {
        background: rgba(255, 255, 255, 0.08);
    }
    
    [data-theme="dark"] .mobile-nav-item.active {
        background: rgba(129, 140, 248, 0.2);
    }
    
    [data-theme="dark"] .header {
        background: rgba(30, 41, 59, 0.98);
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .sidebar, .right-sidebar, .post-actions, .theme-toggle-btn, .mobile-fab {
        display: none !important;
    }
    .main {
        max-width: 100%;
        border: none;
    }
}

/* ========================================
   MOBILE FLOATING ACTION BUTTONS
   ======================================== */
.mobile-fab {
    position: fixed;
    right: var(--spacing-md);
    bottom: calc(var(--spacing-md) + 80px);
    z-index: 150;
    display: none;
}

@media (max-width: 500px) {
    .mobile-fab {
        display: block;
    }
}

.fab-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.fab-primary {
    background: var(--primary-gradient);
    color: var(--text-inverse);
}

.fab-primary:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.fab-menu {
    position: absolute;
    bottom: 64px;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
}

.fab-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ========================================
   COMPOSE MODAL - Twitter-like Design
   ======================================== */
.compose-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: flex-start;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
    padding-top: 10vh;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.compose-modal-content {
    background: var(--surface);
    border-radius: var(--radius-xl);
    max-width: 580px;
    width: 100%;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-xl);
    animation: modalSlideUp 0.2s ease;
    overflow: hidden;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.compose-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.compose-modal-header h3 {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text);
}

.compose-modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.compose-modal-close:hover {
    background: var(--surface-hover);
    color: var(--text);
}

.compose-modal-form {
    padding: 0;
}

.compose-input-wrapper {
    position: relative;
    padding: var(--spacing-lg);
}

.compose-modal-form textarea {
    width: 100%;
    background: #f5f5f5;
    border: none;
    border-radius: var(--radius-xl);
    color: var(--text);
    font-size: var(--font-lg);
    padding: var(--spacing-md);
    resize: none;
    outline: none;
    font-family: inherit;
    line-height: 1.6;
    min-height: 120px;
    max-height: 400px;
    transition: all var(--transition-base);
    overflow-y: auto;
}

.compose-modal-form textarea::placeholder {
    color: #999999;
    font-size: var(--font-lg);
}

.compose-modal-form textarea:focus {
    background: #f0f0f0;
}

.content-declaration-btn {
    position: absolute;
    right: calc(var(--spacing-lg) + var(--spacing-md));
    bottom: calc(var(--spacing-lg) + var(--spacing-md));
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: var(--font-xs);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.content-declaration-btn:hover {
    background: var(--surface-hover);
    color: var(--text);
}

.upload-preview {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.upload-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    max-width: 240px;
}

.upload-grid-item {
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    background: var(--surface-hover);
    border: 1px dashed var(--border);
}

.upload-grid-item.add-photo {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px dashed var(--border);
    background: transparent;
}

.upload-grid-item.add-photo:hover {
    background: var(--primary-glow);
    border-color: var(--primary);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 24px;
}

.upload-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.upload-grid-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: rgba(220, 53, 69, 0.9);
    border: 2px solid white;
    border-radius: 50%;
    color: white;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    z-index: 10;
}

.upload-grid-item:hover .remove-btn {
    opacity: 1;
}

.compose-modal-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.compose-actions-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    position: relative;
}

.compose-action-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--primary);
    font-size: var(--font-sm);
    cursor: pointer;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.compose-action-btn:hover {
    background: var(--primary-glow);
}

.compose-action-btn span:first-child {
    font-size: 18px;
}

.compose-actions-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.visibility-selector {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.clock-icon {
    font-size: 14px;
}

.vip-badge {
    font-size: 10px;
    font-weight: 600;
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.1);
    padding: 2px 6px;
    border-radius: var(--radius-full);
}

.visibility-select {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text);
    font-size: var(--font-sm);
    font-weight: 500;
    cursor: pointer;
}

.visibility-select option {
    background: var(--surface);
    color: var(--text);
}

.compose-submit-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 72px;
}

.compose-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.compose-submit-btn:active {
    transform: translateY(-1px);
}

.compose-submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Emoji Picker */
.emoji-picker {
    position: absolute;
    bottom: 100%;
    left: 0;
    width: 320px;
    max-height: 400px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 100;
}

.emoji-picker.active {
    display: flex;
}

.emoji-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
    background: var(--surface-hover);
}

.emoji-category {
    font-size: 20px;
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    opacity: 0.6;
}

.emoji-category:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.05);
}

.emoji-category.active {
    opacity: 1;
    background: var(--primary-glow);
}

.emoji-picker-body {
    padding: var(--spacing-md);
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: var(--spacing-xs);
    max-height: 300px;
}

.emoji-item {
    font-size: 24px;
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.emoji-item:hover {
    background: var(--surface-hover);
    transform: scale(1.2);
}

/* Responsive for emoji picker */
@media (max-width: 600px) {
    .emoji-picker {
        width: 280px;
        left: -80px;
    }
    
    .emoji-picker-body {
        grid-template-columns: repeat(7, 1fr);
    }
}

@media (max-width: 380px) {
    .emoji-picker {
        width: 260px;
        left: -100px;
    }
    
    .emoji-picker-body {
        grid-template-columns: repeat(6, 1fr);
    }
}

.upload-progress {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--surface-hover);
}

.upload-progress-bar {
    height: 4px;
    background: var(--border);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.upload-progress-fill {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.upload-progress-text {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

.upload-preview {
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

/* Responsive for compose modal */
@media (max-width: 600px) {
    .compose-modal {
        padding: 0;
        padding-top: 0;
        align-items: flex-end;
    }
    
    .compose-modal-content {
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        max-width: 100%;
        width: 100%;
        max-height: 90vh;
        overflow-y: auto;
    }
    
    .compose-input-wrapper {
        padding: var(--spacing-md);
    }
    
    .compose-modal-form textarea {
        min-height: 100px;
        font-size: var(--font-md);
    }
    
    .content-declaration-btn {
        right: calc(var(--spacing-md) + var(--spacing-md));
        bottom: calc(var(--spacing-md) + var(--spacing-md));
    }
    
    .upload-grid {
        padding: 0 var(--spacing-md);
        max-width: 100%;
    }
    
    .compose-modal-actions {
        padding: var(--spacing-sm) var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .compose-action-btn {
        padding: var(--spacing-xs);
    }
    
    .compose-action-btn span:last-child {
        display: none;
    }
    
    .visibility-selector {
        padding: var(--spacing-xs);
    }
    
    .vip-badge {
        display: none;
    }
    
    .compose-submit-btn {
        min-width: 64px;
        padding: var(--spacing-xs) var(--spacing-md);
    }
}

@media (max-width: 380px) {
    .compose-action-btn {
        padding: 6px;
    }
    
    .compose-action-btn span:first-child {
        font-size: 16px;
    }
}

.fab-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface);
    border-radius: var(--radius-full);
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.fab-item:hover {
    background: var(--surface-hover);
    transform: translateX(-4px);
}

.fab-item-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-glow);
    border: 1px solid var(--primary);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: var(--font-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.fab-item-btn:hover {
    background: var(--primary);
    color: var(--text-inverse);
    transform: translateX(-4px);
}

.fab-icon {
    font-size: 16px;
}

.fab-label {
    font-size: var(--font-sm);
    font-weight: 500;
}

/* ========================================
   POST MEDIA STYLES
   ======================================== */
.post-media {
    margin-top: 4px;  /* 减少媒体区域的上边距 */
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    width: 100%;
}

/* =======================
   UNIFIED IMAGE CONTROL
   ======================= */
/* All images in post content (inline and media section) */
.post-text img,
.post-image,
.post-media-image,
.post-media-img {
    max-width: 100%;
    width: 100%;
    height: auto;
    max-height: 500px;
    border-radius: var(--radius-md);
    object-fit: contain;
    display: block;
    background: var(--bg-tertiary);
}

/* Image container to prevent layout shift during loading */
.post-image-wrapper,
.media-item.media-image {
    position: relative;
    width: 100%;
    max-width: 100%;
    max-height: 500px;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    aspect-ratio: 16 / 10;
}

/* Ensure images don't overflow */
.media-item.media-image img {
    width: 100%;
    height: 100%;
    max-height: 500px;
    object-fit: contain;
    display: block;
}

.post-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: var(--radius-md);
    object-fit: contain;
    background: var(--bg-tertiary);
}

.post-video {
    max-width: 100%;
    max-height: 400px;
    border-radius: var(--radius-md);
    background: #1e293b;
}

/* =======================
   VIDEO PLAYER FIXES
   ======================= */
.media-item.media-video {
    width: 100%;
    max-width: 100%;
    margin-top: 4px;  /* 减少视频容器的上边距 */
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #000;
    position: relative;
}

.media-item.media-video video {
    width: 100%;
    max-width: 100%;
    max-height: 500px;
    display: block;
    object-fit: contain;
    background: #000;
}

.post-text video {
    width: 100%;
    max-width: 100%;
    max-height: 500px;
    display: block;
    border-radius: var(--radius-md);
    margin: 12px 0;
    background: #000;
}

/* 修复标题与播放器之间的间距 */
.post-title {
    margin-bottom: 4px;  /* 减少标题下方间距 */
}

.post-text {
    margin-bottom: 8px;  /* 减少正文下方间距 */
}

/* 空的 post-text 不占额外空间 */
.post-text:empty,
.post-text:has(:only-child br),
.post-text:has(:only-child p:empty) {
    margin-bottom: 0;
    padding: 0;
}

.post-media {
    margin-top: 4px;  /* 减少媒体区域的上边距 */
}

/* ========================================
   INLINE CONTENT IMAGES (from HTML content)
   ======================================== */
.post-text img {
    max-width: 100%;
    width: 100%;
    height: auto;
    max-height: 500px;
    border-radius: var(--radius-md);
    object-fit: contain;
    display: block;
    margin: var(--spacing-sm) 0;
    background: var(--bg-tertiary);
}

/* Ensure responsive for all images */
@media (max-width: 768px) {
    .post-text img,
    .post-image,
    .media-item.media-image img {
        max-height: 400px;
    }
    
    .post-image-wrapper,
    .media-item.media-image {
        max-height: 400px;
    }
}

@media (max-width: 480px) {
    .post-title {
        font-size: 18px;
        line-height: 1.3;
        margin-bottom: 6px;
    }
    
    .post-text {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .post-text img,
    .post-image,
    .media-item.media-image img {
        max-height: 350px;
    }
    
    .post-image-wrapper,
    .media-item.media-image {
        max-height: 350px;
    }
}

/* 平板设备响应式优化 (481px - 768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .post-title {
        font-size: 20px;
        line-height: 1.3;
    }
    
    .post-text {
        font-size: 15px;
        line-height: 1.6;
    }
}

/* 大屏平板和小桌面设备响应式优化 (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .post-title {
        font-size: 22px;
        line-height: 1.3;
    }
    
    .post-text {
        font-size: 15px;
        line-height: 1.6;
    }
}

/* 桌面设备响应式优化 (1025px+) */
@media (min-width: 1025px) {
    .post-title {
        font-size: 24px;
        line-height: 1.3;
    }
    
    .post-text {
        font-size: 16px;
        line-height: 1.7;
    }
}

/* Prevent large image layout shift using aspect ratio */
img {
    aspect-ratio: auto;
}

/* Loading placeholders */
.post-image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 图片加载状态样式 */
.loading-image {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.loaded-image {
    animation: none;
}

.error-image {
    display: none !important;
}

.image-fallback {
    padding: 20px;
    text-align: center;
    color: #999;
    background: #f5f5f5;
    border-radius: 8px;
    font-size: 14px;
}

/* 确保所有容器内图片正确处理 */
.post-text img {
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.post-media img {
    border-radius: 8px;
}

/* 响应式图片网格调整 */
@media (max-width: 640px) {
    .post-media img {
        max-height: 400px !important;
    }
    
    .post-text img {
        max-height: 350px !important;
    }
}

@media (max-width: 480px) {
    .post-media img {
        max-height: 300px !important;
    }
    
    .post-text img {
        max-height: 280px !important;
    }
}

.post-audio {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--surface-hover);
    border-radius: var(--radius-md);
}

.post-document {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--surface-hover);
    border-radius: var(--radius-md);
}

.doc-icon {
    font-size: 24px;
}

.doc-link {
    color: var(--primary);
    text-decoration: none;
    font-size: var(--font-sm);
    word-break: break-all;
}

.doc-link:hover {
    text-decoration: underline;
}

.post-link {
    padding: var(--spacing-md);
    background: var(--surface-hover);
    border-radius: var(--radius-md);
}

.link-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text);
}

.link-icon {
    font-size: 18px;
}

.link-url {
    font-size: var(--font-sm);
    word-break: break-all;
    color: var(--primary);
}

.post-code {
    padding: var(--spacing-md);
    background: #1e293b;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 0;
}

.post-code code {
    color: #e2e8f0;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: var(--font-sm);
    line-height: 1.6;
}

/* ========================================
   POST ANIMATIONS
   ======================================== */
.post-card {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.post-card.deleting {
    opacity: 0.5;
    pointer-events: none;
}

.post-card.deleted {
    opacity: 0;
    transform: translateX(-100%);
}

.comment {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.comment.deleting {
    opacity: 0.5;
    pointer-events: none;
}

.comment.deleted {
    opacity: 0;
    transform: translateX(-100%);
}

/* ========================================
   SUCCESS MESSAGE STYLES
   ======================================== */
.success-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border-radius: var(--radius-lg);
    color: white;
    font-size: var(--font-sm);
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
    animation: slideInDown 0.5s ease;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
}

.success-text {
    flex: 1;
}

.success-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    transition: all 0.2s ease;
    white-space: nowrap;
}

.success-link:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.success-message-animated {
    animation: slideInDown 0.5s ease, pulse 2s ease-in-out infinite;
}

.success-icon-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    animation: bounce 1s ease infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.success-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.success-subtext {
    font-size: 13px;
    font-weight: 400;
    opacity: 0.9;
}

.success-close {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    transition: background 0.2s ease;
    line-height: 1;
}

.success-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* END OF SUCCESS MESSAGE STYLES */

/* ========================================
   AUTH FORM STYLES
   ======================================== */

/* 表单组 */
.form-group {
    margin-bottom: 16px;
}

/* 验证消息 */
.validation-message {
    display: none;
    font-size: 12px;
    margin-top: 4px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.validation-message.error {
    display: block;
    background: #fef2f2;
    color: #dc2626;
}

.validation-message.success {
    display: block;
    background: #f0fdf4;
    color: #16a34a;
}

/* 按钮加载状态 */
.btn-loader {
    display: none;
    align-items: center;
    gap: 8px;
}

/* 注册成功消息 */
.auth-success-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    animation: slideInUp 0.5s ease;
}

.auth-success-message .success-icon {
    font-size: 64px;
    margin-bottom: 20px;
    animation: bounce 1s ease infinite;
}

.auth-success-message .success-content h3 {
    font-size: 24px;
    color: #10b981;
    margin: 0 0 10px 0;
}

.auth-success-message .success-content p {
    font-size: 16px;
    color: #666;
    margin: 5px 0;
}

.auth-success-message .success-hint {
    font-size: 14px !important;
    color: #999 !important;
    margin-top: 15px !important;
}

/* 注册错误消息 */
.auth-error-message {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
    transition: opacity 0.3s ease;
}

/* 动画 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@media (max-width: 600px) {
    .success-message {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 13px;
    }
    
    .success-icon {
        width: 20px;
        height: 20px;
        font-size: 12px;
    }
    
    .success-link {
        padding: 3px 10px;
        font-size: 12px;
    }
}

/* ========================================
   UPLOAD PROGRESS & PREVIEW
   ======================================== */
.upload-progress {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--surface-hover);
    border-radius: var(--radius-md);
}

.upload-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.upload-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.upload-progress-text {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    text-align: center;
}

.upload-preview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--surface-hover);
}

.preview-item img,
.preview-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-item audio {
    width: 100%;
    height: 100%;
}

.preview-item.video-preview {
    aspect-ratio: 16 / 9;
    max-height: 250px;
}

.preview-item.video-preview .preview-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: #000;
}

.preview-item.video-preview .preview-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-item.video-preview .preview-filename {
    font-size: var(--font-xs);
    color: #fff;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 70%;
}

.preview-item.video-preview .preview-size {
    font-size: var(--font-xs);
    color: rgba(255, 255, 255, 0.7);
}

.preview-item .preview-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 32px;
}

.preview-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: rgba(220, 53, 69, 0.9);
    border: 2px solid white;
    border-radius: 50%;
    color: white;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 10;
}

.preview-item:hover .remove-btn {
    opacity: 1;
}

.preview-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-xs);
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Modal Header Actions */
.modal-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-draft {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--surface-hover);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-draft:hover {
    background: var(--border);
    color: var(--text);
}

/* Compose Tabs */
.compose-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
}

.compose-tab {
    flex: 1;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: var(--font-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.compose-tab.active {
    color: var(--primary);
}

.compose-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.compose-tab-content {
    display: none;
}

.compose-tab-content.active {
    display: block;
}

/* Media Indicator */
.media-indicator {
    display: flex;
    align-items: center;
}

.media-count {
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

/* Video Cover Selector */
.video-cover-selector {
    padding: var(--spacing-md);
    background: var(--surface-hover);
    border-radius: var(--radius-md);
    margin: 0 var(--spacing-lg) var(--spacing-md);
}

.video-cover-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.video-cover-header span {
    font-weight: 500;
}

.video-cover-close {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
}

.video-cover-timeline {
    display: flex;
    gap: var(--spacing-xs);
    overflow-x: auto;
    padding-bottom: var(--spacing-xs);
}

.cover-frame {
    width: 80px;
    height: 45px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    flex-shrink: 0;
}

.cover-frame.selected {
    border-color: var(--primary);
}

.cover-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Article Editor */
.article-editor {
    padding: var(--spacing-md) 0;
}

.article-title {
    width: 100%;
    padding: var(--spacing-md);
    border: none;
    border-bottom: 1px solid var(--border);
    font-size: var(--font-xl);
    font-weight: 600;
    outline: none;
    background: transparent;
    margin-bottom: var(--spacing-md);
}

.article-title::placeholder {
    color: var(--text-secondary);
}

/* Article Cover Upload */
.article-cover-upload {
    margin: 0 var(--spacing-lg) var(--spacing-md);
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-cover-upload:hover {
    border-color: var(--primary);
    background: var(--primary-glow);
}

.cover-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.cover-icon {
    font-size: 48px;
}

.cover-text {
    color: var(--text-secondary);
}

.cover-preview {
    position: relative;
    width: 100%;
    height: 100%;
}

.cover-preview img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.cover-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    background: rgba(220, 53, 69, 0.9);
    border: 2px solid white;
    border-radius: 50%;
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Editor Toolbar */
.editor-toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.toolbar-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.toolbar-btn:hover {
    background: var(--surface-hover);
    color: var(--text);
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 var(--spacing-xs);
}

/* Editor Content */
.editor-content {
    min-height: 300px;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-md);
    line-height: 1.8;
    outline: none;
}

.editor-content:focus {
    outline: none;
}

.editor-content:empty::before {
    content: attr(placeholder);
    color: var(--text-secondary);
    pointer-events: none;
}

.editor-content h1 {
    font-size: var(--font-xl);
    font-weight: 600;
    margin: var(--spacing-md) 0;
}

.editor-content h2 {
    font-size: var(--font-lg);
    font-weight: 600;
    margin: var(--spacing-md) 0;
}

.editor-content ul,
.editor-content ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.editor-content li {
    margin: var(--spacing-xs) 0;
}

/* Topic Selector */
.topic-selector {
    padding: var(--spacing-md);
    background: var(--surface);
    border-top: 1px solid var(--border);
}

.topic-search-wrapper {
    margin-bottom: var(--spacing-md);
}

.topic-search {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    outline: none;
    transition: all 0.2s ease;
}

.topic-search:focus {
    border-color: var(--primary);
}

.topic-tags {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.topic-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--surface-hover);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.topic-tag:hover {
    background: var(--primary-glow);
    color: var(--primary);
}

.topic-list {
    max-height: 200px;
    overflow-y: auto;
}

.topic-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.topic-item:hover {
    background: var(--surface-hover);
}

.topic-item-name {
    font-weight: 500;
}

.topic-item-count {
    color: var(--text-secondary);
    font-size: var(--font-sm);
}

.topic-selected {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

.selected-topic {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-glow);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
}

.selected-topic-remove {
    width: 18px;
    height: 18px;
    border: none;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    color: inherit;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* More Options Dropdown */
.more-options-dropdown {
    position: absolute;
    bottom: 100%;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs);
    z-index: 100;
    min-width: 160px;
}

.more-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.more-option:hover {
    background: var(--surface-hover);
}

/* Schedule Modal */
.schedule-modal,
.url-shortener-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.schedule-modal-content,
.url-shortener-content {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-xl);
}

.schedule-modal-content h4,
.url-shortener-content h4 {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.schedule-input,
.url-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    outline: none;
    transition: all 0.2s ease;
    margin-bottom: var(--spacing-md);
}

.schedule-input:focus,
.url-input:focus {
    border-color: var(--primary);
}

.schedule-actions,
.url-modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-copy {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    filter: brightness(1.1);
}

.btn-secondary {
    background: var(--surface-hover);
    color: var(--text);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-copy {
    background: var(--surface-hover);
    color: var(--text);
    padding: var(--spacing-xs) var(--spacing-sm);
}

/* Short URL Result */
.short-url-result {
    margin-top: var(--spacing-md);
}

.short-url-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--surface-hover);
    border-radius: var(--radius-md);
}

.short-url-display span {
    flex: 1;
    color: var(--primary);
    word-break: break-all;
}

.url-note {
    margin-top: var(--spacing-sm);
    font-size: var(--font-xs);
    color: var(--text-secondary);
}

.url-note span {
    color: var(--text);
}

/* Responsive */
@media (max-width: 600px) {
    .upload-preview {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .compose-tabs {
        padding: 0 var(--spacing-sm);
    }
    
    .compose-tab {
        padding: var(--spacing-sm);
    }
    
    .article-cover-upload {
        margin: 0 var(--spacing-sm) var(--spacing-md);
        min-height: 150px;
    }
    
    .editor-toolbar {
        padding: var(--spacing-sm);
    }
    
    .editor-content {
        padding: var(--spacing-sm);
    }
    
    .topic-selector {
        padding: var(--spacing-sm);
    }
    
    .schedule-modal-content,
    .url-shortener-content {
        width: 95%;
        padding: var(--spacing-lg);
    }
}}

.compose-modal-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--surface-hover);
    color: var(--text-muted);
    cursor: pointer;
    font-size: var(--font-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.compose-modal-close:hover {
    background: var(--danger-light);
    color: var(--danger);
}

.compose-modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.compose-modal-form textarea {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-md);
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: var(--font-md);
    resize: vertical;
    outline: none;
    transition: all var(--transition-base);
}

.compose-modal-form textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.modal-media {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.modal-upload-row {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.modal-upload-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.modal-upload-btn:hover {
    background: var(--primary-glow);
    border-color: var(--primary);
    color: var(--primary);
}

.modal-upload-btn input {
    display: none;
}

.code-section textarea {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: var(--font-sm);
    background: #1e293b;
    color: #e2e8f0;
    border-color: #334155;
}

.compose-modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

.compose-modal-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.compose-modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ========================================
   NEW POST ANIMATION
   ======================================== */
.post.new-post {
    animation: slideInFromTop 0.4s ease-out;
}

@keyframes slideInFromTop {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ========================================
   LOADING INDICATOR
   ======================================== */
.loading-indicator {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: var(--font-sm);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ========================================
   MEDIA THUMBNAIL STYLES
   ======================================== */
.media-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    max-width: 100%;
}

.media-thumb-wrapper {
    position: relative;
    width: 125px;
    height: 125px;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

.media-thumb-wrapper.video-thumb {
    width: 165px;
    height: 220px;
}

.post-media-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.2s ease;
}

/* Responsive adjustments for thumbnail grid */
@media (max-width: 768px) {
    .media-grid {
        gap: 3px;
    }
    
    .media-thumb-wrapper {
        width: calc(33.33% - 2px);
        height: auto;
        aspect-ratio: 1;
    }
    
    .media-thumb-wrapper.video-thumb {
        width: calc(50% - 2px);
        aspect-ratio: 9 / 16;
    }
}

@media (max-width: 480px) {
    .media-thumb-wrapper {
        width: calc(33.33% - 2px);
        height: auto;
        aspect-ratio: 1;
    }
}

.media-thumb-wrapper:hover .post-media-thumb {
    transform: scale(1.05);
}

.media-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
}

.media-thumb-wrapper:hover .media-overlay {
    background: rgba(0, 0, 0, 0.3);
    opacity: 1;
}

/* ========================================
   POST DETAIL PAGE MEDIA STYLES
   ======================================== */
.post-media-detail {
    margin-top: 16px;
}

.detail-media-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.detail-grid-item {
    width: 100%;
}

.detail-grid-item.video-item {
    aspect-ratio: 16 / 9;
}

.detail-image-container {
    position: relative;
    width: 100%;
    background: var(--bg-tertiary);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
}

.detail-video-container {
    position: relative;
    width: 100%;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
}

.image-skeleton {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    z-index: 1;
}

.skeleton-placeholder {
    width: 80%;
    height: 80%;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 8px;
}

.detail-gallery-image {
    width: 100%;
    height: auto;
    display: block;
    transition: opacity 0.3s ease;
    position: relative;
    z-index: 2;
}

.detail-gallery-image.lazy {
    opacity: 0;
}

.detail-gallery-image.loaded {
    opacity: 1;
}

.detail-gallery-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-overlay,
.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
    z-index: 3;
}

.detail-image-container:hover .image-overlay,
.detail-video-container:hover .video-overlay {
    background: rgba(0, 0, 0, 0.3);
    opacity: 1;
}

/* Adaptive grid for different screen sizes */
@media (min-width: 640px) {
    .detail-media-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .detail-grid-item:first-child:nth-last-child(n+3),
    .detail-grid-item:first-child:nth-last-child(n+3) ~ .detail-grid-item {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .detail-media-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .post-media-detail {
        margin-top: 12px;
    }
    
    .detail-media-grid {
        gap: 6px;
    }
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Responsive adjustments for detail page */
@media (max-width: 768px) {
    .post-media-detail {
        gap: 8px;
        margin-top: 12px;
    }
    
    .detail-image-wrapper {
        border-radius: 8px;
        min-height: 150px;
    }
    
    .detail-video-wrapper {
        border-radius: 8px;
    }
}

@media (max-width: 480px) {
    .post-media-detail {
        gap: 6px;
    }
    
    .detail-image-wrapper {
        min-height: 120px;
    }
}

.zoom-icon, .play-icon {
    font-size: 24px;
    color: white;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

/* Lazy loading placeholder */
.post-media-thumb.lazy {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   LIGHTBOX / IMAGE PREVIEW MODAL
   ======================================== */
.lightbox-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.lightbox-overlay.active {
    display: flex;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.lightbox-image {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
}

.lightbox-video {
    max-width: 100%;
    max-height: 85vh;
    border-radius: 8px;
}

/* Lightbox loading state */
.lightbox-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    color: white;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 12px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    font-size: 14px;
    opacity: 0.8;
}

/* Lightbox error state */
.lightbox-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    color: white;
    padding: 20px;
}

.error-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.error-text {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 8px;
}

.error-hint {
    font-size: 14px;
    opacity: 0.7;
    margin: 0;
}

/* Image zoom functionality */
.lightbox-image {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
    cursor: zoom-in;
    transition: transform 0.3s ease;
}

.lightbox-image.zoomed {
    cursor: zoom-out;
}

/* Zoom controls */
.lightbox-zoom-controls {
    position: fixed;
    bottom: 60px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.zoom-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.zoom-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.lightbox-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.lightbox-prev, .lightbox-next {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-prev:hover, .lightbox-next:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-indicator {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 14px;
    background: rgba(0, 0, 0, 0.5);
    padding: 6px 12px;
    border-radius: 20px;
}

.lightbox-actions {
    position: fixed;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.lightbox-action-btn {
    padding: 8px 16px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.lightbox-action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .media-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 3px;
    }
    
    .lightbox-prev, .lightbox-next {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
    
    .lightbox-close {
        width: 36px;
        height: 36px;
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .media-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .lightbox-overlay {
        padding: 10px;
    }
}

/* ========================================
   MOBILE BOTTOM NAVIGATION (LEFT SIDE)
   ======================================== */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    left: 0;
    bottom: 20px;
    z-index: 999;
    flex-direction: column;
    gap: 8px;
    padding: 8px;
    background: var(--surface);
    border-radius: 0 16px 16px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
}

.mobile-nav-item:hover,
.mobile-nav-item:active {
    background: var(--bg-tertiary);
    color: var(--primary);
}

.mobile-nav-item.active {
    background: var(--primary-glow);
    color: var(--primary);
}

.mobile-nav-icon {
    font-size: 20px;
    line-height: 1;
    margin-bottom: 4px;
}

.mobile-nav-label {
    font-size: 10px;
    font-weight: 500;
    white-space: nowrap;
}

.mobile-nav-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: #ef4444;
    color: white;
    font-size: 10px;
    font-weight: 600;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-nav-compose {
    background: var(--primary-gradient);
    color: white;
}

.mobile-nav-compose:hover,
.mobile-nav-compose:active {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.mobile-nav-compose .mobile-nav-icon {
    margin-bottom: 0;
}

.mobile-nav-logout {
    color: #ef4444;
}

.mobile-nav-logout:hover,
.mobile-nav-logout:active {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    transform: scale(0.95);
}

.mobile-nav-logout.active {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

/* Responsive adjustments for mobile navigation */
@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex;
    }
    
    .mobile-bottom-nav {
        left: 0;
        bottom: auto;
        top: 50%;
        transform: translateY(-50%);
        border-radius: 0 20px 20px 0;
        padding: 12px 8px;
    }
    
    .mobile-nav-item {
        width: 60px;
        height: 60px;
    }
    
    .mobile-nav-icon {
        font-size: 22px;
    }
    
    .mobile-nav-label {
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .mobile-bottom-nav {
        bottom: 20px;
        top: auto;
        transform: none;
        flex-direction: row;
        left: 50%;
        transform: translateX(-50%);
        border-radius: 28px;
        padding: 8px 12px;
        gap: 4px;
    }
    
    .mobile-nav-item {
        width: 52px;
        height: 52px;
        border-radius: 16px;
    }
    
    .mobile-nav-icon {
        font-size: 20px;
    }
    
    .mobile-nav-label {
        font-size: 9px;
    }
}

/* ========================================
   TRENDING TOPICS - Enhanced Style
   ======================================== */
.trending-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.trending-item {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    cursor: pointer;
    transition: background 0.2s ease;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
}

.trending-item:hover {
    background: var(--surface-hover);
}

.trending-rank {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #939393;
    margin-right: 12px;
    flex-shrink: 0;
}

.trending-rank.top-1 {
    background: linear-gradient(135deg, #ff3859 0%, #ff6975 100%);
    color: #fff;
    border-radius: 50%;
    font-size: 12px;
}

.trending-rank.top-2 {
    background: linear-gradient(135deg, #ff7043 0%, #ffa050 100%);
    color: #fff;
    border-radius: 50%;
    font-size: 12px;
}

.trending-rank.top-3 {
    background: linear-gradient(135deg, #ffa940 0%, #ffc847 100%);
    color: #fff;
    border-radius: 50%;
    font-size: 12px;
}

.trending-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.trending-title-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.trending-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.trending-item:hover .trending-name {
    color: var(--primary);
}

.trending-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1px 6px;
    font-size: 10px;
    font-weight: 600;
    border-radius: 3px;
    flex-shrink: 0;
}

.trending-tag.hot {
    background: linear-gradient(135deg, #ff7043 0%, #ffa050 100%);
    color: #fff;
}

.trending-tag.explode {
    background: linear-gradient(135deg, #c41e3a 0%, #e6162d 100%);
    color: #fff;
}

.trending-count {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ========================================
   HASHTAG PAGE - Tag Header
   ======================================== */
.tag-header {
    background: linear-gradient(135deg, var(--primary) 0%, #0056b3 100%);
    color: #fff;
    padding: 32px;
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tag-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.tag-back-btn {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
    font-size: 14px;
}

.tag-back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.tag-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.tag-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 14px;
    opacity: 0.9;
}

.tag-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tag-meta-item strong {
    font-size: 18px;
}

.no-posts-state {
    text-align: center;
    padding: 60px 20px;
    background: #fff;
    border-radius: var(--radius-lg);
}

.no-posts-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.explore-tags {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-top: 20px;
}

.explore-tags-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text);
}

.explore-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.explore-tag {
    padding: 6px 12px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.explore-tag:hover {
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
}

/* ========================================
   RESPONSIVE - Tag Page
   ======================================== */
@media (max-width: 768px) {
    .tag-header {
        padding: 24px 16px;
    }
    
    .tag-title {
        font-size: 22px;
    }
    
    .tag-meta {
        gap: 12px;
        font-size: 12px;
    }
    
    .tag-meta-item strong {
        font-size: 14px;
    }
    
    .trending-item {
        padding: 8px 10px;
    }
    
    .trending-rank {
        width: 20px;
        height: 20px;
        font-size: 12px;
        margin-right: 10px;
    }
    
    .trending-name {
        font-size: 13px;
    }
}

/* ========================================
   无限滚动和返回顶部
   ======================================== */

.load-sentinel {
    height: 1px;
    width: 100%;
    visibility: hidden;
}

.loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
    gap: var(--spacing-sm);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
    gap: var(--spacing-sm);
}

.loading-error span {
    font-size: var(--font-sm);
}

.retry-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
}

.retry-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.back-to-top {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s;
    z-index: 100;
    opacity: 0.9;
}

.back-to-top:hover {
    transform: scale(1.1);
    background: var(--primary-dark);
    opacity: 1;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.back-to-top:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 90px;
        right: 16px;
        width: 44px;
        height: 44px;
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .mobile-bottom-nav {
        bottom: env(safe-area-inset-bottom, 10px);
    }
    
    .back-to-top {
        bottom: calc(80px + env(safe-area-inset-bottom, 0px));
    }
}