/* ============================================
   AI Navigator - Design System v3
   Based on new UI reference
   ============================================ */

:root {
    --color-primary: #E53935;
    --color-primary-hover: #D32F2F;
    --color-accent: #10B981;
    
    --bg-body: #F5F5F7;
    --bg-sidebar: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-hover: #F7F7F8;
    --bg-input: #F5F5F7;
    
    --text-primary: #1D1D1F;
    --text-secondary: #6E6E73;
    --text-tertiary: #8E8E93;
    --text-placeholder: #AEAEB2;
    
    --border-light: rgba(0, 0, 0, 0.06);
    --border-default: rgba(0, 0, 0, 0.1);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 50%;
    
    --sidebar-width: 72px;
    --topbar-height: 56px;
    
    --transition: 0.2s ease;
}

html, body {
    width: 100%;
}

[data-theme="dark"] {
    --bg-body: #121214;
    --bg-sidebar: #1C1C1E;
    --bg-card: #1C1C1E;
    --bg-hover: #2C2C2E;
    --bg-input: #2C2C2E;
    --text-primary: #F5F5F7;
    --text-secondary: #A1A1A6;
    --text-tertiary: #6E6E73;
    --border-light: rgba(255, 255, 255, 0.08);
    --border-default: rgba(255, 255, 255, 0.12);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-body);
    min-height: 100vh;
}

a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; -webkit-tap-highlight-color: transparent; }
input, select, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; }

.app { display: flex; min-height: 100vh; max-width: 100vw; }

/* ===== Sidebar ===== */
.sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-logo {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon {
    width: 40px; height: 40px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 11px;
    font-weight: 700;
}

.logo-icon.logo-image,
.mobile-logo-icon.logo-image,
.auth-logo.logo-image {
    background: transparent;
    object-fit: contain;
}

img.logo-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
    background: transparent;
}

img.mobile-logo-icon {
    width: 36px;
    height: 36px;
    object-fit: contain;
    background: transparent;
}

img.auth-logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    background: transparent;
    margin: 0 auto 20px;
    display: block;
}

.sidebar-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8px;
    gap: 4px;
}

.sidebar-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 8px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 11px;
    transition: var(--transition);
    position: relative;
}

.sidebar-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.sidebar-item.active { color: var(--text-primary); }
.sidebar-item svg { width: 20px; height: 20px; }

/* Submenu Popup */
.sidebar-submenu {
    position: absolute;
    left: calc(100% + 8px);
    top: -20px;
    min-width: 340px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-8px);
    transition: var(--transition);
    z-index: 200;
}

.sidebar-item:hover .sidebar-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.submenu-col { padding: 16px; min-width: 160px; }
.submenu-col + .submenu-col { border-left: 1px solid var(--border-light); }

.submenu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.submenu-link:hover { background: var(--bg-hover); color: var(--text-primary); }
.submenu-link svg { width: 16px; height: 16px; opacity: 0.6; }

.submenu-link.has-arrow { justify-content: space-between; }
.submenu-link.has-arrow::after {
    content: '';
    width: 5px; height: 5px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(-45deg);
    opacity: 0.4;
}

.sidebar-bottom {
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.sidebar-btn {
    width: 36px; height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition);
}

.sidebar-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.sidebar-btn svg { width: 18px; height: 18px; }

/* Theme Toggle Button */
.theme-toggle-btn .moon-icon { display: none; }
.theme-toggle-btn .sun-icon { display: block; }
[data-theme="dark"] .theme-toggle-btn .moon-icon { display: block; }
[data-theme="dark"] .theme-toggle-btn .sun-icon { display: none; }

.mobile-theme-btn .moon-icon { display: none; }
.mobile-theme-btn .sun-icon { display: block; }
[data-theme="dark"] .mobile-theme-btn .moon-icon { display: block; }
[data-theme="dark"] .mobile-theme-btn .sun-icon { display: none; }

.sidebar-login {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 8px;
    color: var(--text-secondary);
    font-size: 11px;
}

.sidebar-login:hover { color: var(--text-primary); }
.sidebar-login svg { width: 18px; height: 18px; }

/* Sidebar More Menu */
.sidebar-more { position: relative; }

.sidebar-more-menu {
    position: absolute;
    bottom: 0;
    left: calc(100% + 8px);
    display: flex;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-8px);
    transition: var(--transition);
    z-index: 300;
}

.sidebar-more:hover .sidebar-more-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.sidebar-more-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    min-width: 180px;
}

.sidebar-more-sub {
    opacity: 0;
    visibility: hidden;
    transform: translateX(-8px);
    transition: var(--transition);
}

.sidebar-more-item.has-sub:hover ~ .sidebar-more-sub,
.sidebar-more-sub:hover {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.sidebar-more-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
    white-space: nowrap;
}

.sidebar-more-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.sidebar-more-item svg { width: 16px; height: 16px; opacity: 0.7; }
.sidebar-more-item.has-sub::after {
    content: '';
    margin-left: auto;
    width: 5px; height: 5px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(-45deg);
    opacity: 0.4;
}

/* ===== Main ===== */
.main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: calc(100vw - var(--sidebar-width));
}

/* ===== Topbar ===== */
.topbar {
    height: var(--topbar-height);
    background: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 32px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-nav { display: flex; align-items: center; gap: 0; }

.topbar-link {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.topbar-link svg { width: 16px; height: 16px; }
.topbar-link:hover { color: var(--text-primary); background: var(--bg-hover); }
.topbar-link.active { color: var(--text-primary); font-weight: 500; }

.search-box { position: relative; width: 240px; margin-left: 16px; }

.search-box input {
    width: 100%;
    height: 36px;
    padding: 0 16px 0 38px;
    background: var(--bg-input);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 13px;
    transition: var(--transition);
}

.search-box input::placeholder { color: var(--text-placeholder); }
.search-box input:focus { outline: none; background: var(--bg-card); border-color: var(--border-default); }

.search-box svg {
    position: absolute;
    left: 12px; top: 50%;
    transform: translateY(-50%);
    width: 16px; height: 16px;
    color: var(--text-tertiary);
    pointer-events: none;
}

/* ===== Content ===== */
.content { flex: 1; padding: 24px; }

.section { margin-bottom: 32px; }

.section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.section-icon { width: 20px; height: 20px; color: var(--text-tertiary); }
.section-title { font-size: 14px; font-weight: 500; color: var(--text-primary); }

/* ===== Tool Cards ===== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.tool-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.tool-card:hover { border-color: var(--border-default); box-shadow: var(--shadow-sm); }

.tool-card-icon {
    width: 48px; height: 48px;
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 12px;
}

.tool-card-icon img { width: 100%; height: 100%; object-fit: cover; }

.tool-card-icon svg {
    width: 100%; height: 100%;
    padding: 12px;
    background: var(--bg-input);
    color: var(--text-tertiary);
}

.tool-card-name { font-size: 14px; font-weight: 500; color: var(--text-primary); margin-bottom: 8px; }

.tool-card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Forum List ===== */
.forum-list {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.forum-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    transition: var(--transition);
    text-decoration: none;
}

.forum-item:hover { background: var(--bg-hover); }
.forum-item + .forum-item { border-top: 1px solid var(--border-light); }

.forum-avatar {
    width: 44px; height: 44px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
}

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

.forum-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.forum-author { font-size: 13px; font-weight: 500; color: var(--text-primary); }
.forum-time { font-size: 12px; color: var(--text-tertiary); }

.forum-tag {
    padding: 4px 10px;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    font-size: 11px;
    color: var(--text-secondary);
}

.forum-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; line-height: 1.4; }

.forum-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.forum-stats { display: flex; gap: 20px; margin-top: 12px; }

.forum-stats span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-tertiary);
}

.forum-stats svg { width: 14px; height: 14px; }

/* ===== Blog Cards ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.blog-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: var(--transition);
}

.blog-card:hover { border-color: var(--border-default); box-shadow: var(--shadow-sm); }

.blog-card-image {
    height: 160px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-card-image svg { width: 48px; height: 48px; color: rgba(255,255,255,0.5); }

.blog-card-body { padding: 20px; }

.blog-card-tag {
    display: inline-block;
    padding: 4px 8px;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.blog-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-meta { display: flex; gap: 16px; font-size: 11px; color: var(--text-tertiary); }
.blog-card-meta span { display: flex; align-items: center; gap: 4px; }
.blog-card-meta svg { width: 14px; height: 14px; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
    min-height: 36px;
}

.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-outline { background: transparent; border: 1px solid var(--border-default); color: var(--text-primary); }
.btn-outline:hover { background: var(--bg-hover); }
.btn svg { width: 16px; height: 16px; }

/* ===== Pagination ===== */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 24px; }

.pagination-btn {
    min-width: 36px; height: 36px;
    padding: 0 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.pagination-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.pagination-btn.active { background: var(--color-primary); color: white; }

/* ===== Help Button ===== */
.help-btn {
    position: fixed;
    right: 20px; bottom: 20px;
    width: 44px; height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    z-index: 50;
}

.help-btn:hover { color: var(--text-primary); box-shadow: var(--shadow-md); }
.help-btn svg { width: 24px; height: 24px; flex-shrink: 0; }

/* ===== Mobile Header ===== */
.mobile-header {
    display: none;
    position: sticky;
    top: 0;
    background: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-light);
    z-index: 100;
    flex-direction: column;
}

.mobile-header-top {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    height: 52px;
}

.mobile-logo { display: flex; align-items: center; flex-shrink: 0; }

.mobile-logo-icon {
    width: 32px; height: 32px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 10px;
    font-weight: 700;
}

.mobile-search {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.mobile-search input {
    width: 100%;
    height: 36px;
    padding: 0 12px 0 36px;
    background: var(--bg-input);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 14px;
}

.mobile-search input:focus { outline: none; border-color: var(--border-default); }
.mobile-search input::placeholder { color: var(--text-placeholder); }

.mobile-search svg {
    position: absolute;
    left: 10px;
    width: 18px; height: 18px;
    color: var(--text-tertiary);
    pointer-events: none;
}

.mobile-theme-btn {
    width: 36px; height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.mobile-theme-btn svg { width: 20px; height: 20px; }
.mobile-theme-btn:active { background: var(--bg-hover); }

.mobile-header-nav {
    position: relative;
    height: 44px;
    overflow: hidden;
}

.mobile-nav-scroll {
    display: flex;
    gap: 0;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 0 16px;
    height: 100%;
    align-items: center;
}

.mobile-nav-scroll::-webkit-scrollbar { display: none; }

.mobile-cat-link {
    flex-shrink: 0;
    padding: 8px 16px;
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-weight: 400;
    -webkit-tap-highlight-color: transparent;
}

.mobile-cat-link:active,
.mobile-cat-link:hover { background: var(--bg-hover); }
.mobile-cat-link.active { color: var(--text-primary); font-weight: 400; background: var(--bg-hover); }

.mobile-btn {
    width: 40px; height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.mobile-btn svg { width: 20px; height: 20px; }

/* ===== Mobile Nav ===== */
.mobile-nav {
    display: none;
    position: fixed;
    left: 0; right: 0; bottom: 0;
    height: 54px;
    background: var(--bg-sidebar);
    border-top: 1px solid var(--border-light);
    z-index: 100;
    width: 100%;
}

.mobile-nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    height: 100%;
    padding: 0 8px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 6px 12px;
    color: var(--text-tertiary);
    font-size: 10px;
    border: none;
    background: none;
    cursor: pointer;
    flex: 0 0 auto;
    min-width: 0;
    border-radius: 8px;
    transition: var(--transition);
    -webkit-tap-highlight-color: transparent;
}

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

.mobile-nav-item svg { width: 20px; height: 20px; }
.mobile-nav-item.active { color: var(--text-primary); background: var(--bg-hover); }

/* Mobile More Menu */
.mobile-nav-more { position: relative; flex: 0 0 auto; min-width: 0; display: flex; justify-content: center; }

.mobile-more-menu {
    position: absolute;
    bottom: calc(100% + 12px);
    right: 0;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: var(--transition);
    z-index: 200;
}

.mobile-nav-more:focus-within .mobile-more-menu,
.mobile-nav-more.active .mobile-more-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-more-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.mobile-more-item:active { background: var(--bg-hover); color: var(--text-primary); }
.mobile-more-item svg { width: 18px; height: 18px; opacity: 0.7; }

/* Mobile FAB - Forum Floating Action Button */
.mobile-fab {
    display: none;
    position: fixed;
    right: 16px;
    bottom: 76px;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    box-shadow: var(--shadow-md);
    z-index: 99;
    cursor: pointer;
    transition: var(--transition);
}

.mobile-fab svg { width: 20px; height: 20px; }
.mobile-fab:active { transform: scale(0.95); background: var(--bg-hover); }

/* Forum Header */
.forum-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.forum-page-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Responsive ===== */
@media (max-width: 1400px) { .tools-grid { grid-template-columns: repeat(5, 1fr); } }
@media (max-width: 1200px) { .tools-grid { grid-template-columns: repeat(4, 1fr); } .blog-grid { grid-template-columns: repeat(2, 1fr); } .blog-grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 1024px) { .tools-grid { grid-template-columns: repeat(3, 1fr); } }

/* ===== Detail Page Layout ===== */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 32px;
    align-items: start;
}

.detail-main { min-width: 0; }

.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: 80px;
    height: fit-content;
    align-self: start;
}

.sidebar-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border-light);
}

.sidebar-card-sticky {
    position: sticky;
    top: 80px;
}

.sidebar-card-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Author Card */
.author-card {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 600;
}

.author-info { display: flex; flex-direction: column; }
.author-name { font-weight: 600; font-size: 14px; }
.author-bio { font-size: 12px; color: var(--text-tertiary); }

.author-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.author-stat { text-align: center; }
.author-stat-value { display: block; font-size: 16px; font-weight: 700; }
.author-stat-label { font-size: 11px; color: var(--text-tertiary); }

/* Related List */
.related-list { display: flex; flex-direction: column; gap: 12px; }

.related-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    margin: -8px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.related-item:hover { background: var(--bg-hover); }

.related-thumb {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.related-info { min-width: 0; }
.related-title { display: block; font-size: 13px; font-weight: 500; line-height: 1.4; margin-bottom: 2px; }
.related-meta { font-size: 11px; color: var(--text-tertiary); }

/* TOC Navigation */
.toc-nav { display: flex; flex-direction: column; gap: 4px; }

.toc-link {
    padding: 8px 12px;
    font-size: 13px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    border-left: 2px solid transparent;
    transition: var(--transition);
}

.toc-link:hover { color: var(--text-primary); background: var(--bg-hover); }
.toc-link.active { color: var(--color-primary); border-left-color: var(--color-primary); background: rgba(229, 57, 53, 0.05); }

/* Tags List */
.tags-list { display: flex; flex-wrap: wrap; gap: 8px; }

.tag-item {
    padding: 6px 12px;
    background: var(--bg-input);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.tag-item:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-block { width: 100%; }
@media (max-width: 1024px) { .tools-grid { grid-template-columns: repeat(3, 1fr); } }

@media (max-width: 768px) {
    .sidebar { display: none; }
    .mobile-header { display: flex; }
    .mobile-nav { display: flex; }
    .main { margin-left: 0; padding-bottom: 64px; max-width: 100vw; }
    .topbar { display: none; }
    .content { padding: 16px; overflow-x: hidden; max-width: 100%; box-sizing: border-box; }
    .tools-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .blog-grid { grid-template-columns: 1fr; }
    .blog-grid-4 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .tool-card { padding: 16px; }
    .tool-card-icon { width: 40px; height: 40px; }
    .help-btn { display: none; }
    .forum-header .btn { display: none; }
    .forum-fab { display: flex; align-items: center; justify-content: center; }
    .detail-layout { grid-template-columns: 1fr; }
    .detail-sidebar { display: none; }
    .forum-list { border-radius: var(--radius-md); }
    .forum-item { padding: 16px; gap: 12px; }
    .forum-avatar { width: 36px; height: 36px; font-size: 12px; }
    .forum-title { font-size: 15px; }
    .forum-excerpt { font-size: 13px; -webkit-line-clamp: 2; }
    .forum-meta { gap: 8px; }
    .forum-stats { gap: 16px; margin-top: 10px; }
    .notifications-list { gap: 8px; }
    .notification-item { padding: 14px; gap: 12px; border-radius: var(--radius-md); }
    .notification-icon { width: 36px; height: 36px; }
    .section-header { margin-bottom: 16px; }
    .section-title { font-size: 18px; }
}

@media (max-width: 480px) {
    .tools-grid { grid-template-columns: 1fr 1fr; }
    .tool-card { padding: 12px; }
    .tool-card-name { font-size: 13px; }
    .tool-card-desc { font-size: 11px; -webkit-line-clamp: 1; }
}

/* ===== Topbar Back Link ===== */
.topbar-back {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.topbar-back:hover { color: var(--text-primary); }
.topbar-back svg { width: 18px; height: 18px; }

/* ===== Post Detail ===== */
.post-detail { max-width: 800px; }
.post-header { margin-bottom: 24px; }
.post-tag { display: inline-block; padding: 4px 10px; background: var(--bg-input); border-radius: var(--radius-sm); font-size: 12px; color: var(--text-secondary); margin-bottom: 12px; }
.post-title { font-size: 28px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; }
.post-meta { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.post-author { display: flex; align-items: center; gap: 12px; }
.post-author-avatar { width: 44px; height: 44px; border-radius: var(--radius-full); background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; display: flex; align-items: center; justify-content: center; font-weight: 600; }
.post-author-name { font-weight: 500; }
.post-author-time { font-size: 12px; color: var(--text-tertiary); }
.post-stats { display: flex; gap: 16px; font-size: 13px; color: var(--text-tertiary); }
.post-stats span { display: flex; align-items: center; gap: 4px; }
.post-stats svg { width: 16px; height: 16px; }
.post-content { line-height: 1.8; }
.post-content h2 { font-size: 20px; font-weight: 600; margin: 32px 0 16px; }
.post-content p { margin-bottom: 16px; color: var(--text-secondary); }
.post-content ul, .post-content ol { margin-bottom: 16px; padding-left: 24px; color: var(--text-secondary); }
.post-content li { margin-bottom: 8px; }
.post-image-placeholder { height: 300px; background: var(--bg-input); border-radius: var(--radius-lg); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; color: var(--text-tertiary); margin: 24px 0; }
.post-image-placeholder svg { width: 48px; height: 48px; opacity: 0.5; }
.post-actions { display: flex; gap: 12px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border-light); }
.post-action-btn { display: flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: var(--radius-md); font-size: 13px; color: var(--text-secondary); transition: var(--transition); }
.post-action-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.post-action-btn svg { width: 18px; height: 18px; }

/* ===== Comments ===== */
.comments-section { margin-top: 40px; max-width: 800px; }
.comments-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.comments-title { font-size: 18px; font-weight: 600; }
.comments-sort { padding: 8px 12px; background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-md); font-size: 13px; color: var(--text-secondary); cursor: pointer; }
.comment-form { display: flex; gap: 12px; margin-bottom: 32px; }
.comment-form-avatar { width: 40px; height: 40px; border-radius: var(--radius-full); background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; display: flex; align-items: center; justify-content: center; font-weight: 600; flex-shrink: 0; font-size: 14px; overflow: hidden; }
.comment-form-avatar img { width: 100%; height: 100%; object-fit: cover; }
.comment-form-input { flex: 1; }
.comment-form-input textarea { width: 100%; padding: 12px; background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-md); resize: none; min-height: 80px; margin-bottom: 12px; font-size: 14px; color: var(--text-primary); }
.comment-form-input textarea:focus { outline: none; border-color: var(--color-primary); }
.comment-form-input textarea::placeholder { color: var(--text-placeholder); }
.comments-list { display: flex; flex-direction: column; gap: 12px; }
.comment-item { display: flex; gap: 12px; padding: 16px; background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--border-light); }
.comment-avatar { width: 36px; height: 36px; border-radius: var(--radius-full); background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; flex-shrink: 0; }
.comment-content { flex: 1; }
.comment-header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.comment-author { font-size: 13px; font-weight: 500; }
.comment-badge { padding: 2px 6px; background: rgba(16, 185, 129, 0.1); color: #10B981; border-radius: 4px; font-size: 10px; }
.comment-time { font-size: 11px; color: var(--text-tertiary); }
.comment-text { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.comment-actions { display: flex; gap: 16px; margin-top: 8px; }
.comment-action { display: flex; align-items: center; gap: 4px; font-size: 12px; color: var(--text-tertiary); transition: var(--transition); }
.comment-action:hover { color: var(--text-primary); }
.comment-action svg { width: 14px; height: 14px; }

/* ===== Article Detail ===== */
.article-detail { max-width: 800px; }
.article-cover { height: 300px; border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; margin-bottom: 32px; }
.article-cover svg { width: 64px; height: 64px; color: rgba(255,255,255,0.5); }
.article-header { margin-bottom: 32px; }
.article-tag { display: inline-block; padding: 4px 10px; background: var(--bg-input); border-radius: var(--radius-sm); font-size: 12px; color: var(--text-secondary); margin-bottom: 12px; }
.article-title { font-size: 32px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; }
.article-meta { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; font-size: 13px; color: var(--text-tertiary); }
.article-author { display: flex; align-items: center; gap: 8px; }
.article-author-avatar { width: 28px; height: 28px; border-radius: var(--radius-full); background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 600; }
.article-author-name { color: var(--text-primary); font-weight: 500; }
.article-stats { display: flex; gap: 16px; font-size: 13px; color: var(--text-tertiary); }
.article-stats span { display: flex; align-items: center; gap: 4px; }
.article-stats svg { width: 16px; height: 16px; }
.article-toc { background: var(--bg-input); border-radius: var(--radius-lg); padding: 20px; margin-bottom: 32px; }
.article-toc-title { font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.article-toc-list { display: flex; flex-direction: column; gap: 8px; }
.article-toc-list a { font-size: 13px; color: var(--text-secondary); transition: var(--transition); }
.article-toc-list a:hover { color: var(--color-primary); }
.article-content { line-height: 1.8; }
.article-content h2 { font-size: 22px; font-weight: 600; margin: 40px 0 16px; padding-top: 16px; }
.article-content p { margin-bottom: 16px; color: var(--text-secondary); }
.article-content ul, .article-content ol { margin-bottom: 16px; padding-left: 24px; color: var(--text-secondary); }
.article-content li { margin-bottom: 8px; }
.article-content code { padding: 2px 6px; background: var(--bg-input); border-radius: 4px; font-family: monospace; font-size: 12px; }
.article-callout { display: flex; gap: 12px; padding: 16px; background: rgba(16, 185, 129, 0.1); border-radius: var(--radius-md); margin: 24px 0; }
.article-callout-icon { color: #10B981; flex-shrink: 0; }
.article-callout-icon svg { width: 20px; height: 20px; }
.article-callout-content { font-size: 13px; line-height: 1.6; }
.article-code { background: #1e1e1e; border-radius: var(--radius-md); margin: 24px 0; overflow: hidden; }
.article-code-header { padding: 10px 16px; background: rgba(255,255,255,0.05); font-size: 12px; color: #888; }
.article-code code { display: block; padding: 16px; color: #9cdcfe; font-family: monospace; font-size: 13px; overflow-x: auto; }
.article-table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 13px; }
.article-table th, .article-table td { padding: 12px; text-align: left; border-bottom: 1px solid var(--border-light); }
.article-table th { font-weight: 600; background: var(--bg-input); }
.article-table td { color: var(--text-secondary); }
.article-actions { display: flex; gap: 12px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border-light); }
.article-related { margin-top: 48px; }
.article-related-title { font-size: 18px; font-weight: 600; margin-bottom: 20px; }

/* ===== Notifications ===== */
.notifications-header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.notifications-title { font-size: 24px; font-weight: 700; }
.notifications-badge { padding: 4px 10px; background: var(--color-primary); color: white; border-radius: var(--radius-full); font-size: 12px; font-weight: 500; }
.notifications-list { display: flex; flex-direction: column; gap: 2px; }
.notification-item { display: flex; align-items: flex-start; gap: 16px; padding: 16px; background: var(--bg-card); border-radius: var(--radius-md); transition: var(--transition); }
.notification-item:hover { background: var(--bg-hover); }
.notification-item.unread { background: rgba(229, 57, 53, 0.04); }
.notification-item.unread::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 4px; height: 4px; background: var(--color-primary); border-radius: 50%; }
.notification-icon { width: 40px; height: 40px; border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; color: white; flex-shrink: 0; }
.notification-icon svg { width: 18px; height: 18px; }
.notification-content { flex: 1; min-width: 0; }
.notification-text { font-size: 14px; line-height: 1.5; margin-bottom: 4px; }
.notification-text a { color: var(--color-primary); }
.notification-text a:hover { text-decoration: underline; }
.notification-preview { font-size: 13px; color: var(--text-tertiary); margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.notification-time { font-size: 12px; color: var(--text-tertiary); }
.btn-sm { padding: 6px 12px; min-height: 32px; font-size: 12px; }

/* ===== Auth Pages ===== */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg-body); padding: 24px; }
.auth-container { width: 100%; max-width: 400px; background: var(--bg-card); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-md); }
.auth-header { text-align: center; margin-bottom: 32px; }
.auth-logo { width: 48px; height: 48px; background: var(--color-primary); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: white; font-size: 12px; font-weight: 700; margin: 0 auto 20px; }
.auth-title { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.auth-subtitle { font-size: 14px; color: var(--text-secondary); }
.auth-social { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.auth-social-btn { display: flex; align-items: center; justify-content: center; gap: 12px; width: 100%; padding: 12px; border: 1px solid var(--border-default); border-radius: var(--radius-md); font-size: 14px; font-weight: 500; transition: var(--transition); }
.auth-social-btn:hover { background: var(--bg-hover); }
.auth-social-btn svg { width: 20px; height: 20px; }
.auth-divider { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; font-size: 13px; color: var(--text-tertiary); }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--border-light); }
.auth-field { margin-bottom: 16px; }
.auth-label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; }
.auth-input { width: 100%; padding: 12px 16px; background: var(--bg-input); border: 1px solid transparent; border-radius: var(--radius-md); font-size: 14px; transition: var(--transition); }
.auth-input:focus { outline: none; border-color: var(--color-primary); background: var(--bg-card); }
.auth-options { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; font-size: 13px; }
.auth-checkbox { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); cursor: pointer; }
.auth-checkbox input { width: 16px; height: 16px; }
.auth-link { color: var(--color-primary); }
.auth-link:hover { text-decoration: underline; }
.auth-submit { width: 100%; padding: 14px; background: var(--color-primary); color: white; border-radius: var(--radius-md); font-size: 14px; font-weight: 600; transition: var(--transition); }
.auth-submit:hover { background: var(--color-primary-hover); }
.auth-footer { text-align: center; margin-top: 24px; font-size: 13px; color: var(--text-secondary); }
.auth-back { position: fixed; top: 24px; left: 24px; display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); transition: var(--transition); }
.auth-back:hover { color: var(--text-primary); }
.auth-back svg { width: 18px; height: 18px; }

/* ===== Profile Page ===== */
.profile-layout { display: grid; grid-template-columns: 280px 1fr; gap: 32px; }
.profile-sidebar { position: sticky; top: 80px; height: fit-content; }
.profile-card { background: var(--bg-card); border-radius: var(--radius-lg); padding: 24px; text-align: center; margin-bottom: 16px; border: 1px solid var(--border-light); }
.profile-avatar-large { width: 96px; height: 96px; border-radius: 50%; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; display: flex; align-items: center; justify-content: center; font-size: 28px; font-weight: 700; margin: 0 auto 16px; position: relative; }
.profile-avatar-large img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.profile-avatar-edit { position: absolute; bottom: -4px; right: -4px; width: 32px; height: 32px; background: var(--bg-card); border: 2px solid var(--border-default); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--text-secondary); cursor: pointer; z-index: 10; box-shadow: 0 2px 4px rgba(0,0,0,0.1); transition: var(--transition); }
.profile-avatar-edit:hover { background: var(--bg-hover); color: var(--color-primary); }
.profile-avatar-edit svg { width: 14px; height: 14px; }
.profile-name-large { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.profile-bio { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 20px; }
.profile-stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding-top: 16px; border-top: 1px solid var(--border-light); }
.profile-stat-item { text-align: center; }
.profile-stat-value { display: block; font-size: 18px; font-weight: 700; }
.profile-stat-label { font-size: 11px; color: var(--text-tertiary); }
.profile-nav { background: var(--bg-card); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-light); }
.profile-nav-item { display: flex; align-items: center; gap: 12px; padding: 14px 16px; font-size: 14px; color: var(--text-secondary); transition: var(--transition); }
.profile-nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.profile-nav-item.active { background: var(--bg-hover); color: var(--text-primary); font-weight: 500; }
.profile-nav-item svg { width: 18px; height: 18px; }
.profile-nav-logout { color: #E53935; border-top: 1px solid var(--border-light); }
.profile-nav-logout:hover { background: rgba(229, 57, 53, 0.05); color: #E53935; }
.profile-main { min-width: 0; }
.settings-section { background: var(--bg-card); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 20px; border: 1px solid var(--border-light); }
.settings-title { font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.settings-form { display: flex; flex-direction: column; gap: 16px; }
.settings-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.settings-field { display: flex; flex-direction: column; gap: 6px; }
.settings-label { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.settings-input { padding: 12px 14px; background: var(--bg-input); border: 1px solid transparent; border-radius: var(--radius-md); font-size: 14px; transition: var(--transition); }
.settings-input:focus { outline: none; border-color: var(--color-primary); background: var(--bg-card); }
.settings-textarea { padding: 12px 14px; background: var(--bg-input); border: 1px solid transparent; border-radius: var(--radius-md); font-size: 14px; resize: vertical; min-height: 100px; transition: var(--transition); }
.settings-textarea:focus { outline: none; border-color: var(--color-primary); background: var(--bg-card); }
.settings-toggle-group { display: flex; flex-direction: column; gap: 16px; }
.settings-toggle { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border-light); }
.settings-toggle:last-child { border-bottom: none; }
.settings-toggle-label { font-size: 14px; font-weight: 500; }
.settings-toggle-desc { font-size: 12px; color: var(--text-tertiary); }
.toggle { position: relative; width: 44px; height: 24px; cursor: pointer; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; inset: 0; background: var(--bg-input); border-radius: 24px; transition: var(--transition); }
.toggle-slider::before { content: ''; position: absolute; width: 18px; height: 18px; left: 3px; bottom: 3px; background: white; border-radius: 50%; transition: var(--transition); box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
.toggle input:checked + .toggle-slider { background: var(--color-primary); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); }
.settings-actions { display: flex; gap: 12px; }

@media (max-width: 1024px) { .profile-layout { grid-template-columns: 240px 1fr; } .detail-layout { grid-template-columns: 1fr 260px; } }
@media (max-width: 768px) {
    .profile-layout { grid-template-columns: 1fr; }
    .profile-sidebar { position: static; }
    .settings-row { grid-template-columns: 1fr; }
    .post-meta { flex-direction: column; align-items: flex-start; }
    .detail-layout { grid-template-columns: 1fr; }
    .detail-sidebar { display: none; }
    .blog-grid-4 { grid-template-columns: 1fr; }
}

/* ===== New Styles - Related Posts Cards ===== */
.related-posts-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.related-post-card {
    display: flex;
    gap: 12px;
    padding: 12px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.related-post-card:hover {
    background: var(--bg-hover);
    transform: translateY(-2px);
}

.related-post-thumb {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.related-post-thumb svg {
    width: 24px;
    height: 24px;
    color: rgba(255, 255, 255, 0.7);
}

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

.related-post-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-post-meta {
    display: flex;
    gap: 12px;
    font-size: 11px;
    color: var(--text-tertiary);
}

.related-post-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.related-post-meta svg {
    width: 12px;
    height: 12px;
}

/* ===== Tag Chips (Rounded Rectangle) ===== */
.tag-chip {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

.tag-chip:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* ===== Comments Section Improvements ===== */
.comment-item {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

.comment-item:nth-child(odd) {
    background: var(--bg-input);
    border-color: transparent;
}

.comments-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

.comments-page-info {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* ===== Mobile Nav Full Width (使用上方已有的定义，此处删除重复) =====*/

/* ===== Sidebar Login Active State ===== */
.sidebar-login.active {
    color: var(--color-primary);
}

/* ===== Comments Section Improvements ===== */
.comments-sort {
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--text-secondary);
}

.comment-form-input textarea {
    width: 100%;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    resize: none;
    min-height: 80px;
    margin-bottom: 12px;
}

.comment-form-input textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.comment-form-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
    font-size: 14px;
}

.comment-item {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.comments-pagination {
    display: none;
}

/* ===== Static Pages (About, Contact, Help, Privacy, Terms) ===== */
.static-page {
    max-width: 800px;
    margin: 0 auto;
}

.static-page-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-light);
}

.static-page-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.static-page-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.static-page-content {
    line-height: 1.7;
}

.static-section {
    margin-bottom: 32px;
}

.static-section h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.static-section p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 24px;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-method-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-method-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.contact-method-info h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.contact-method-info p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-placeholder);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    border: none;
}

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

.btn-block {
    width: 100%;
}

/* Help Center FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--bg-hover);
}

.faq-question h3 {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
}

.faq-question svg {
    width: 20px;
    height: 20px;
    color: var(--text-tertiary);
    transition: transform 0.2s ease;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 20px 16px;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-answer p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .static-page-header {
        margin-bottom: 24px;
        padding-bottom: 16px;
    }
    
    .static-page-title {
        font-size: 24px;
    }
    
    .static-page-subtitle {
        font-size: 14px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .contact-form-wrapper {
        padding: 16px;
    }
}

/* ===== Settings Pages (Account, Security, Notifications, Privacy) ===== */
.settings-page {
    max-width: 700px;
}

.settings-page-header {
    margin-bottom: 32px;
}

.settings-page-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.settings-page-desc {
    font-size: 15px;
    color: var(--text-secondary);
}

.settings-hint {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-top: 6px;
}

.settings-select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
}

.settings-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Badge Styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 20px;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: #10B981;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
}

/* Connected Accounts */
.connected-accounts {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.connected-account {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
}

.connected-account-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.connected-account-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.connected-account-icon svg {
    width: 24px;
    height: 24px;
}

.connected-account-icon.google {
    background: #f1f3f4;
    color: #4285f4;
}

.connected-account-icon.github {
    background: #f1f3f4;
    color: #24292e;
}

.connected-account-icon.apple {
    background: #f1f3f4;
    color: #000;
}

.connected-account-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.connected-account-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.connected-account-email {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* Danger Zone */
.settings-section-danger {
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-lg);
    padding: 20px;
    background: rgba(239, 68, 68, 0.02);
}

.settings-section-danger .settings-title {
    color: #EF4444;
}

.settings-danger-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.settings-danger-info {
    flex: 1;
}

.settings-danger-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.settings-danger-desc {
    font-size: 13px;
    color: var(--text-tertiary);
}

.btn-danger {
    background: #EF4444;
    color: white;
    border: none;
}

.btn-danger:hover {
    background: #DC2626;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-default);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--bg-hover);
}

/* Sessions List */
.sessions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.session-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
}

.session-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.session-icon svg {
    width: 20px;
    height: 20px;
}

.session-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.session-device {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.session-location {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* Login History */
.login-history {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.login-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
}

.login-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.login-time {
    font-size: 14px;
    color: var(--text-primary);
}

.login-location {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* Blocked Users Empty State */
.blocked-users-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    text-align: center;
}

.blocked-users-empty svg {
    width: 48px;
    height: 48px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.blocked-users-empty p {
    font-size: 14px;
    color: var(--text-tertiary);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .settings-page-title {
        font-size: 24px;
    }
    
    .settings-danger-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .settings-danger-item .btn {
        width: 100%;
        margin-top: 12px;
    }
    
    .connected-account {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .connected-account .btn {
        width: 100%;
    }
    
    .session-item {
        flex-wrap: wrap;
    }
    
    .session-item .btn,
    .session-item .badge {
        margin-left: 52px;
    }
}

/* Settings sidebar - hide on mobile */
.settings-sidebar-desktop {
    display: block;
}

@media (max-width: 768px) {
    .settings-sidebar-desktop {
        display: none;
    }
    
    .settings-page {
        max-width: 100%;
    }
}

/* ===== New Forum Page Styles ===== */
.forum-page {
    max-width: 100%;
}

/* Forum Hero */
.forum-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.forum-hero-title {
    font-size: 28px;
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
}

.forum-hero-desc {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 20px;
}

.forum-hero-stats {
    display: flex;
    gap: 32px;
}

.forum-hero-stat {
    display: flex;
    flex-direction: column;
}

.forum-hero-stat-value {
    font-size: 24px;
    font-weight: 700;
    color: white;
}

.forum-hero-stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
}

.forum-hero-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: white;
    color: #667eea;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.forum-hero-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.forum-hero-btn svg {
    width: 18px;
    height: 18px;
}

/* Forum Section Header */
.forum-section-header {
    margin-bottom: 16px;
}

.forum-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.forum-section-title svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

/* Featured Posts Grid */
.forum-featured {
    margin-bottom: 32px;
}

.forum-featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.forum-featured-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    transition: all 0.3s;
}

.forum-featured-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.forum-featured-image {
    height: 120px;
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 12px;
}

.forum-featured-badge {
    display: inline-flex;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.9);
    color: #667eea;
    font-size: 11px;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
}

.forum-featured-badge.hot {
    background: #ff4757;
    color: white;
}

.forum-featured-content {
    padding: 16px;
}

.forum-featured-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.forum-featured-tag {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
}

.forum-featured-date {
    font-size: 12px;
    color: var(--text-tertiary);
}

.forum-featured-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.forum-featured-excerpt {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}

.forum-featured-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.forum-featured-author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.forum-featured-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    color: white;
}

.forum-featured-author span {
    font-size: 13px;
    color: var(--text-secondary);
}

.forum-featured-stats {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--text-tertiary);
}

.forum-featured-stats svg {
    width: 14px;
    height: 14px;
}

/* Forum Main Layout */
.forum-main-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
}

/* Forum Posts */
.forum-posts-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.forum-sort-select {
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
}

.forum-list-new {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Forum Post Card */
.forum-post-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all 0.2s;
}

.forum-post-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.forum-post-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.forum-post-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
    color: white;
}

.forum-post-votes {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.forum-vote-btn {
    width: 28px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
}

.forum-vote-btn:hover {
    color: var(--color-primary);
    background: var(--bg-hover);
}

.forum-vote-btn svg {
    width: 16px;
    height: 16px;
}

.forum-vote-count {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.forum-post-main {
    flex: 1;
    min-width: 0;
}

.forum-post-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.forum-post-tag {
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
}

.forum-post-tag.discussion {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.forum-post-tag.question {
    background: rgba(245, 175, 25, 0.1);
    color: #f5af19;
}

.forum-post-tag.showcase {
    background: rgba(17, 153, 142, 0.1);
    color: #11998e;
}

.forum-post-tag.tutorial {
    background: rgba(250, 112, 154, 0.1);
    color: #fa709a;
}

.forum-post-author {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.forum-post-time {
    font-size: 12px;
    color: var(--text-tertiary);
}

.forum-post-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 6px;
}

.forum-post-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}

.forum-post-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.forum-post-stats {
    display: flex;
    gap: 16px;
}

.forum-post-stat {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-tertiary);
}

.forum-post-stat svg {
    width: 14px;
    height: 14px;
}

.forum-post-tags {
    display: flex;
    gap: 6px;
}

.forum-mini-tag {
    padding: 2px 8px;
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 11px;
    border-radius: 4px;
}

/* Forum Sidebar */
.forum-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.forum-sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.forum-sidebar-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.forum-sidebar-title svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
}

/* Trending Topics */
.forum-trending-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.forum-trending-item {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    padding: 8px;
    margin: -8px;
    border-radius: var(--radius-md);
    transition: background 0.2s;
}

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

.forum-trending-rank {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 6px;
}

.forum-trending-item:nth-child(1) .forum-trending-rank {
    background: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
    color: white;
}

.forum-trending-item:nth-child(2) .forum-trending-rank {
    background: linear-gradient(135deg, #bdc3c7 0%, #95a5a6 100%);
    color: white;
}

.forum-trending-item:nth-child(3) .forum-trending-rank {
    background: linear-gradient(135deg, #cd7f32 0%, #a0522d 100%);
    color: white;
}

.forum-trending-info {
    flex: 1;
}

.forum-trending-topic {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.forum-trending-posts {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* Contributors */
.forum-contributors {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.forum-contributor {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    padding: 8px;
    margin: -8px;
    border-radius: var(--radius-md);
    transition: background 0.2s;
}

.forum-contributor:hover {
    background: var(--bg-hover);
}

.forum-contributor-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: white;
}

.forum-contributor-info {
    flex: 1;
}

.forum-contributor-name {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.forum-contributor-posts {
    font-size: 12px;
    color: var(--text-tertiary);
}

.forum-contributor-badge {
    font-size: 18px;
}

/* Tags Cloud */
.forum-tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.forum-cloud-tag {
    padding: 6px 12px;
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 13px;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.2s;
}

.forum-cloud-tag:hover {
    background: var(--color-primary);
    color: white;
}

/* Sidebar CTA */
.forum-sidebar-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
}

.forum-cta-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.forum-cta-title {
    font-size: 18px;
    font-weight: 600;
    color: white;
    margin-bottom: 8px;
}

.forum-cta-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 16px;
}

.forum-cta-btn {
    display: inline-block;
    padding: 12px 24px;
    background: white;
    color: #667eea;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.2s;
}

.forum-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* Forum Responsive */
@media (max-width: 1024px) {
    .forum-main-layout {
        grid-template-columns: 1fr;
    }
    
    .forum-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .forum-hero {
        flex-direction: column;
        text-align: center;
        padding: 24px;
    }
    
    .forum-hero-stats {
        justify-content: center;
    }
    
    .forum-hero-btn {
        width: 100%;
        justify-content: center;
    }
    
    .forum-featured-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .forum-featured-card {
        display: flex;
        flex-direction: row;
    }
    
    .forum-featured-image {
        width: 100px;
        min-width: 100px;
        height: auto;
    }
    
    .forum-featured-badge {
        font-size: 9px;
        padding: 2px 6px;
    }
    
    .forum-post-card {
        padding: 16px;
    }
    
    .forum-post-left {
        display: none;
    }
    
    .forum-post-title {
        font-size: 15px;
    }
    
    .forum-post-excerpt {
        font-size: 13px;
        -webkit-line-clamp: 2;
    }
    
    .forum-post-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .forum-post-tags {
        display: none;
    }
}

/* ===== Post Detail Page Styles ===== */
.post-detail-page {
    max-width: 100%;
}

/* Breadcrumb */
.topbar-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.topbar-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.topbar-breadcrumb a:hover {
    color: var(--color-primary);
}

.topbar-breadcrumb svg {
    width: 14px;
    height: 14px;
    color: var(--text-tertiary);
}

.topbar-breadcrumb span {
    color: var(--text-primary);
    font-weight: 500;
}

/* Mobile Header for Post */
.mobile-back-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
}

.mobile-back-btn svg {
    width: 22px;
    height: 22px;
}

.mobile-header-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Post Detail Layout */
.post-detail-layout {
    display: grid;
    grid-template-columns: 60px 1fr 320px;
    gap: 24px;
}

/* Vote Column */
.post-vote-column {
    position: sticky;
    top: 24px;
    height: fit-content;
}

.post-vote-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
}

.post-vote-btn {
    width: 40px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

.post-vote-btn:hover {
    background: var(--bg-hover);
}

.post-vote-btn.upvote:hover,
.post-vote-btn.upvote.active {
    color: #10b981;
    background: rgba(16, 185, 129, 0.1);
}

.post-vote-btn.downvote:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.post-vote-btn svg {
    width: 22px;
    height: 22px;
}

.post-vote-count {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Post Article */
.post-article {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.post-article-header {
    padding: 28px 28px 0;
}

.post-article-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.post-article-tag {
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
}

.post-article-tag.discussion {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.post-article-tag.hot {
    background: linear-gradient(135deg, #ff6b6b 0%, #ffa500 100%);
    color: white;
}

.post-article-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 20px;
}

.post-article-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
}

.post-article-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.post-article-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 600;
    color: white;
}

.post-article-author-name {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.post-author-badge {
    padding: 2px 8px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 10px;
    font-weight: 600;
    border-radius: 10px;
    text-transform: uppercase;
}

.post-article-author-meta {
    display: flex;
    gap: 8px;
    font-size: 13px;
    color: var(--text-tertiary);
}

.post-article-stats {
    display: flex;
    gap: 16px;
}

.post-article-stat {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.post-article-stat svg {
    width: 16px;
    height: 16px;
}

/* Post Content */
.post-article-content {
    padding: 28px;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-primary);
}

.post-article-content h2 {
    font-size: 22px;
    font-weight: 700;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.post-article-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 24px 0 12px;
    color: var(--text-primary);
}

.post-article-content p {
    margin-bottom: 16px;
}

.post-article-content ul,
.post-article-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.post-article-content li {
    margin-bottom: 8px;
}

/* Quote Block */
.post-quote {
    position: relative;
    margin: 24px 0;
    padding: 20px 24px 20px 56px;
    background: var(--bg-hover);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.post-quote svg {
    position: absolute;
    left: 20px;
    top: 20px;
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    opacity: 0.5;
}

.post-quote p {
    font-style: italic;
    color: var(--text-secondary);
    margin: 0;
}

/* Code Block */
.post-code-block {
    margin: 24px 0;
    background: #1e1e1e;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.post-code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: #2d2d2d;
    border-bottom: 1px solid #3d3d3d;
}

.post-code-header span {
    font-size: 13px;
    color: #999;
}

.post-code-copy {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid #555;
    border-radius: var(--radius-sm);
    color: #ccc;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.post-code-copy:hover {
    background: #3d3d3d;
    border-color: #666;
}

.post-code-copy svg {
    width: 14px;
    height: 14px;
}

.post-code-block pre {
    padding: 16px;
    margin: 0;
    overflow-x: auto;
}

.post-code-block code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 14px;
    line-height: 1.6;
    color: #d4d4d4;
}

/* Post Image */
.post-image {
    margin: 24px 0;
}

.post-image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    height: 300px;
    background: var(--bg-hover);
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-tertiary);
}

.post-image-placeholder svg {
    width: 48px;
    height: 48px;
}

.post-image-caption {
    font-size: 13px;
    color: var(--text-tertiary);
    text-align: center;
    margin-top: 8px;
}

/* Post Tags */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.post-tag-link {
    padding: 6px 14px;
    background: var(--bg-hover);
    color: var(--color-primary);
    font-size: 13px;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.2s;
}

.post-tag-link:hover {
    background: var(--color-primary);
    color: white;
}

/* Post Actions */
.post-article-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px;
    background: var(--bg-hover);
    border-top: 1px solid var(--border-light);
}

.post-action-group {
    display: flex;
    gap: 8px;
}

.post-action-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.post-action-item:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.post-action-item.active {
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
    color: #ef4444;
}

.post-action-item svg {
    width: 18px;
    height: 18px;
}

/* Comments Section */
.post-comments {
    margin-top: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.post-comments-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.post-comments-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.post-comments-title svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.post-comments-sort {
    padding: 8px 12px;
    background: var(--bg-hover);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
}

/* Comment Form */
.post-comment-form {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-light);
}

.post-comment-form-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: white;
    flex-shrink: 0;
}

.post-comment-form-input {
    flex: 1;
}

.post-comment-form-input textarea {
    width: 100%;
    min-height: 80px;
    padding: 12px;
    background: var(--bg-hover);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-primary);
    resize: vertical;
    margin-bottom: 12px;
}

.post-comment-form-input textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.post-comment-form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.post-comment-form-tools {
    display: flex;
    gap: 4px;
}

.post-comment-tool {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.post-comment-tool:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.post-comment-tool svg {
    width: 18px;
    height: 18px;
}

/* Comment Item */
.post-comments-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.post-comment {
    display: flex;
    gap: 12px;
}

.post-comment-vote {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.post-comment-vote-btn {
    width: 28px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
}

.post-comment-vote-btn:hover {
    color: var(--color-primary);
    background: var(--bg-hover);
}

.post-comment-vote-btn svg {
    width: 16px;
    height: 16px;
}

.post-comment-vote span {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

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

.post-comment-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.post-comment-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: white;
}

.post-comment-author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.post-comment-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.post-comment-badge {
    padding: 2px 8px;
    font-size: 10px;
    font-weight: 600;
    border-radius: 10px;
    text-transform: uppercase;
}

.post-comment-badge.top {
    background: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
    color: white;
}

.post-comment-badge.op {
    background: var(--color-primary);
    color: white;
}

.post-comment-time {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-left: auto;
}

.post-comment-body {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
}

.post-comment-body p {
    margin-bottom: 8px;
}

.post-comment-body ul {
    margin: 8px 0;
    padding-left: 20px;
}

.post-comment-body li {
    margin-bottom: 4px;
}

.post-comment-actions {
    display: flex;
    gap: 16px;
    margin-top: 12px;
}

.post-comment-action {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: 13px;
    cursor: pointer;
    transition: color 0.2s;
}

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

.post-comment-action svg {
    width: 16px;
    height: 16px;
}

/* Nested Comments */
.post-comment-replies {
    margin-top: 16px;
    padding-left: 20px;
    border-left: 2px solid var(--border-light);
}

.post-comment-nested {
    margin-top: 16px;
}

/* Load More */
.post-comments-load-more {
    width: 100%;
    padding: 14px;
    margin-top: 20px;
    background: var(--bg-hover);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.post-comments-load-more:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Post Sidebar */
.post-detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: 24px;
    height: fit-content;
}

.post-sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.post-sidebar-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.post-sidebar-title svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
}

/* Author Card */
.post-author-card {
    text-align: center;
}

.post-author-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.post-author-avatar-lg {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 600;
    color: white;
}

.post-author-name-lg {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.post-author-badge-lg {
    padding: 4px 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
}

.post-author-bio {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
}

.post-author-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 16px;
    padding: 16px 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.post-author-stat {
    text-align: center;
}

.post-author-stat-value {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.post-author-stat-label {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* Table of Contents */
.post-toc {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.post-toc-item {
    display: block;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.post-toc-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.post-toc-item.active {
    background: rgba(102, 126, 234, 0.1);
    color: var(--color-primary);
    font-weight: 500;
}

.post-toc-item.sub {
    padding-left: 24px;
    font-size: 12px;
}

/* Related Posts */
.post-related-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.post-related-item {
    display: flex;
    gap: 12px;
    text-decoration: none;
    padding: 8px;
    margin: -8px;
    border-radius: var(--radius-md);
    transition: background 0.2s;
}

.post-related-item:hover {
    background: var(--bg-hover);
}

.post-related-thumb {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.post-related-info h4 {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-related-info span {
    font-size: 11px;
    color: var(--text-tertiary);
}

/* Sidebar Tags */
.post-sidebar-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.post-sidebar-tag {
    padding: 6px 12px;
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 13px;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.2s;
}

.post-sidebar-tag:hover {
    background: var(--color-primary);
    color: white;
}

/* Responsive */
@media (max-width: 1200px) {
    .post-detail-layout {
        grid-template-columns: 60px 1fr;
    }
    
    .post-detail-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .post-detail-layout {
        grid-template-columns: 1fr;
    }
    
    .post-vote-column {
        display: none;
    }
    
    .post-article-header {
        padding: 20px 16px 0;
    }
    
    .post-article-title {
        font-size: 20px;
    }
    
    .post-article-meta {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .post-article-content {
        padding: 20px 16px;
    }
    
    .post-article-content h2 {
        font-size: 18px;
    }
    
    .post-article-actions {
        padding: 12px 16px;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .post-action-item span {
        display: none;
    }
    
    .post-action-item.active span {
        display: inline;
    }
    
    .post-comments {
        padding: 16px;
    }
    
    .post-comment-form {
        flex-direction: column;
    }
    
    .post-comment-form-avatar {
        display: none;
    }
}

/* Post Detail Simple Layout (without vote column) */
.post-detail-layout-simple {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
}

@media (max-width: 1024px) {
    .post-detail-layout-simple {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Additional Pages Styles
   ============================================ */

/* === Topbar Back Button === */
.topbar-back {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.topbar-back:hover { color: var(--text-primary); }
.topbar-back svg { width: 18px; height: 18px; }

/* === Tool Detail Page === */
.tool-detail-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 32px;
}

.tool-detail-main { min-width: 0; }

.tool-detail-header {
    display: flex;
    gap: 24px;
    padding: 32px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.tool-detail-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.tool-detail-icon svg { width: 48px; height: 48px; color: var(--text-tertiary); }

.tool-detail-info { flex: 1; min-width: 200px; }
.tool-detail-name { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.tool-detail-tagline { font-size: 15px; color: var(--text-secondary); margin-bottom: 16px; }

.tool-detail-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.tool-detail-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}
.tool-detail-meta svg { width: 16px; height: 16px; }
.tool-detail-rating svg { color: #FBBF24; }

.tool-detail-actions {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--color-primary); color: white; border: none; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-outline { background: transparent; border: 1px solid var(--border-default); color: var(--text-primary); }
.btn-outline:hover { background: var(--bg-hover); }

.tool-detail-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    padding: 24px;
    margin-bottom: 24px;
}
.tool-detail-section-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.tool-detail-description p { font-size: 14px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 12px; }

.tool-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.tool-feature-item {
    padding: 20px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
}
.tool-feature-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}
.tool-feature-icon svg { width: 20px; height: 20px; color: var(--color-primary); }
.tool-feature-item h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.tool-feature-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

.tool-pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.tool-pricing-card {
    padding: 24px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    position: relative;
}
.tool-pricing-card.featured { border-color: var(--color-primary); }
.pricing-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
}
.pricing-name { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.pricing-price { font-size: 32px; font-weight: 700; margin-bottom: 16px; }
.pricing-price span { font-size: 14px; font-weight: 400; color: var(--text-tertiary); }
.pricing-features { display: flex; flex-direction: column; gap: 10px; }
.pricing-features li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-secondary); }
.pricing-features svg { width: 16px; height: 16px; color: var(--color-accent); flex-shrink: 0; }

.tool-reviews-list { display: flex; flex-direction: column; gap: 20px; }
.tool-review-item { padding: 20px; background: var(--bg-input); border-radius: var(--radius-md); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
}
.review-info { flex: 1; }
.review-author { font-weight: 500; font-size: 14px; display: block; }
.review-date { font-size: 12px; color: var(--text-tertiary); }
.review-rating { display: flex; gap: 2px; }
.review-rating svg { width: 14px; height: 14px; color: #FBBF24; }
.review-text { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

.tool-detail-sidebar { display: flex; flex-direction: column; gap: 20px; }
.tool-sidebar-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    padding: 20px;
}
.tool-sidebar-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 16px; }

.tool-info-list { display: flex; flex-direction: column; gap: 12px; }
.tool-info-item { display: flex; justify-content: space-between; font-size: 13px; }
.tool-info-label { color: var(--text-tertiary); }
.tool-info-value { color: var(--text-primary); font-weight: 500; }
.tool-info-value.link { color: var(--color-primary); }

.related-tools-list { display: flex; flex-direction: column; gap: 12px; }
.related-tool-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    transition: var(--transition);
}
.related-tool-item:hover { background: var(--bg-hover); }
.related-tool-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
}
.related-tool-icon svg { width: 20px; height: 20px; color: var(--text-tertiary); }
.related-tool-name { font-size: 14px; font-weight: 500; display: block; }
.related-tool-category { font-size: 12px; color: var(--text-tertiary); }

/* === Search Results Page === */
.search-box.large { width: 100%; max-width: 600px; }
.search-box.large input { height: 44px; font-size: 15px; }

.search-results-header { margin-bottom: 24px; }
.search-results-title { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.search-results-title span { color: var(--color-primary); }
.search-results-count { font-size: 14px; color: var(--text-tertiary); }

.search-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 12px;
}
.search-tab {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.search-tab:hover { background: var(--bg-hover); }
.search-tab.active { background: var(--color-primary); color: white; }
.tab-count { font-size: 11px; opacity: 0.7; margin-left: 4px; }

.search-filters {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}
.filter-group { display: flex; align-items: center; gap: 8px; }
.filter-group label { font-size: 13px; color: var(--text-tertiary); }
.filter-select {
    padding: 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
}

.search-results-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
.search-result-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.search-result-item:hover { border-color: var(--border-default); box-shadow: var(--shadow-sm); }

.result-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.result-icon svg { width: 24px; height: 24px; }
.result-icon.tool { background: #FEF3C7; color: #D97706; }
.result-icon.post { background: #DBEAFE; color: #2563EB; }
.result-icon.article { background: #D1FAE5; color: #059669; }

.result-content { flex: 1; min-width: 0; }
.result-type { font-size: 11px; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.result-title { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.result-title mark { background: #FEF3C7; color: inherit; padding: 0 2px; border-radius: 2px; }
.result-description { font-size: 14px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.result-description mark { background: #FEF3C7; color: inherit; padding: 0 2px; border-radius: 2px; }
.result-meta { display: flex; gap: 16px; font-size: 12px; color: var(--text-tertiary); }
.result-meta span { display: flex; align-items: center; gap: 4px; }
.result-meta svg { width: 14px; height: 14px; }

/* === Compose/New Post Page === */
.compose-container { max-width: 800px; margin: 0 auto; }
.compose-header { margin-bottom: 32px; }
.compose-title { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.compose-subtitle { font-size: 14px; color: var(--text-secondary); }

.compose-form {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    padding: 32px;
}
.compose-field { margin-bottom: 24px; }
.compose-label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 8px; }
.compose-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition);
}
.compose-input:focus { outline: none; border-color: var(--color-primary); background: var(--bg-card); }

.compose-select-wrapper { position: relative; }
.compose-select {
    width: 100%;
    padding: 12px 16px;
    padding-right: 40px;
    background: var(--bg-input);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 14px;
    appearance: none;
    cursor: pointer;
}
.compose-select-wrapper svg {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-tertiary);
    pointer-events: none;
}

.compose-editor { border: 1px solid var(--border-light); border-radius: var(--radius-md); overflow: hidden; }
.editor-toolbar {
    display: flex;
    gap: 4px;
    padding: 8px 12px;
    background: var(--bg-input);
    border-bottom: 1px solid var(--border-light);
}
.editor-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition);
}
.editor-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.editor-btn svg { width: 18px; height: 18px; }

.compose-textarea {
    width: 100%;
    min-height: 300px;
    padding: 16px;
    background: var(--bg-card);
    border: none;
    font-size: 14px;
    line-height: 1.7;
    resize: vertical;
}
.compose-textarea:focus { outline: none; }

.compose-upload {
    border: 2px dashed var(--border-default);
    border-radius: var(--radius-md);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}
.compose-upload:hover { border-color: var(--color-primary); background: var(--bg-input); }
.compose-upload svg { width: 32px; height: 32px; color: var(--text-tertiary); margin: 0 auto 12px; }
.compose-upload span { display: block; font-size: 14px; color: var(--text-secondary); margin-bottom: 4px; }
.compose-upload small { font-size: 12px; color: var(--text-tertiary); }
.compose-upload input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

.compose-options { display: flex; gap: 24px; margin-bottom: 24px; }
.compose-checkbox { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); cursor: pointer; }
.compose-checkbox input { width: 16px; height: 16px; }

.compose-actions { display: flex; gap: 12px; justify-content: flex-end; }

/* === Saved/Liked Posts === */
.saved-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.saved-title { font-size: 20px; font-weight: 600; }
.saved-count { font-size: 13px; color: var(--text-tertiary); }

.saved-list { display: flex; flex-direction: column; gap: 12px; }
.saved-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.saved-item:hover { border-color: var(--border-default); }
.saved-item-content { flex: 1; min-width: 0; }
.saved-item-type { font-size: 11px; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; display: block; }
.saved-item-title { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.saved-item-excerpt { font-size: 14px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.saved-item-meta { display: flex; gap: 16px; font-size: 12px; color: var(--text-tertiary); }
.saved-item-meta span { display: flex; align-items: center; gap: 4px; }
.saved-item-meta svg { width: 14px; height: 14px; }

.saved-item-remove {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-tertiary);
    transition: var(--transition);
    flex-shrink: 0;
}
.saved-item-remove:hover { background: var(--bg-hover); color: var(--color-primary); }
.saved-item-remove svg { width: 20px; height: 20px; }
.saved-item-remove.liked { color: #EF4444; }

/* === Pagination === */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 32px; }
.pagination-btn {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.pagination-btn:hover { border-color: var(--border-default); color: var(--text-primary); }
.pagination-btn.active { background: var(--color-primary); color: white; border-color: var(--color-primary); }

/* === Responsive for New Pages === */
@media (max-width: 1024px) {
    .tool-detail-layout { grid-template-columns: 1fr; }
    .tool-detail-sidebar { order: -1; }
    .tool-features-grid { grid-template-columns: 1fr; }
    .tool-pricing-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .tool-detail-header { flex-direction: column; text-align: center; }
    .tool-detail-icon { margin: 0 auto; }
    .tool-detail-meta { justify-content: center; }
    .tool-detail-actions { justify-content: center; }
    .search-tabs { overflow-x: auto; flex-wrap: nowrap; }
    .search-filters { flex-direction: column; }
    .compose-form { padding: 20px; }
    .compose-actions { flex-direction: column; }
    .compose-actions .btn { width: 100%; justify-content: center; }
}

/* === v3.3.2 Fixes === */

/* Hide Contents sidebar on mobile */
@media (max-width: 768px) {
    .post-toc-card {
        display: none !important;
    }
}

/* Security and Notifications page icon size fix */
.settings-page .settings-icon svg,
.settings-section .settings-icon svg {
    width: 24px;
    height: 24px;
}

.settings-card-icon svg {
    width: 20px;
    height: 20px;
}

.session-icon svg {
    width: 20px;
    height: 20px;
}

/* Saved Posts and Liked Posts page styles */
.saved-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.saved-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.saved-count {
    font-size: 14px;
    color: var(--text-tertiary);
}

.saved-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.saved-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.saved-item:hover {
    border-color: var(--border-default);
    box-shadow: var(--shadow-sm);
}

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

.saved-item-type {
    display: inline-block;
    font-size: 11px;
    font-weight: 500;
    color: var(--color-primary);
    background: rgba(229, 57, 53, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-bottom: 8px;
}

.saved-item-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.saved-item-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.saved-item-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 12px;
    color: var(--text-tertiary);
}

.saved-item-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.saved-item-meta svg {
    width: 14px;
    height: 14px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state span {
    font-size: 14px;
}

/* Liked Posts specific */
.liked-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.liked-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.liked-count {
    font-size: 14px;
    color: var(--text-tertiary);
}

.liked-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.liked-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.liked-item:hover {
    border-color: var(--border-default);
    box-shadow: var(--shadow-sm);
}

/* Mobile responsive for saved/liked */
@media (max-width: 768px) {
    .saved-header,
    .liked-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .saved-item,
    .liked-item {
        padding: 12px;
    }
    
    .saved-item-title,
    .liked-item-title {
        font-size: 15px;
    }
}

/* === v3.3.3 Fixes === */

/* Settings info box icon size */
.settings-info-box svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.settings-info-box {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.settings-info-box span {
    flex: 1;
}