/* ==========================================================================
   EVUELA AI LAB - Main Stylesheet
   AI 연구소 블로그 다크 테마
   ========================================================================== */

/* ---------- CSS Variables ---------- */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a28;
    --bg-card: #14141f;
    --bg-card-hover: #1a1a2e;
    
    --text-primary: #e8e8f0;
    --text-secondary: #a0a0b8;
    --text-muted: #6a6a80;
    
    --accent-primary: #00d4ff;
    --accent-secondary: #7b2ff7;
    --accent-gradient: linear-gradient(135deg, #00d4ff, #7b2ff7);
    --accent-gradient-hover: linear-gradient(135deg, #00e5ff, #8b3fff);
    
    --border-color: #1e1e30;
    --border-light: #2a2a3e;
    
    --success: #4ade80;
    --warning: #fbbf24;
    --danger: #f87171;
    
    /* Typography */
    --font-sans: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --container-width: 1200px;
    --nav-height: 70px;
    
    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s ease;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: #33ddff;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: var(--shadow-md);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

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

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: 10px;
    font-size: 18px;
    color: #fff;
}

.logo-highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Nav Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-link.active {
    color: var(--accent-primary);
}

.nav-link i {
    font-size: 13px;
}

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle .fa-chevron-down {
    font-size: 10px;
    transition: transform 0.3s;
}

.nav-dropdown:hover .fa-chevron-down {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.dropdown-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
}

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

.dropdown-item .badge {
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-muted);
}

/* ── 카테고리 2단계 드롭다운 ── */
.dropdown-group {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 4px;
    margin-bottom: 4px;
}

.dropdown-group:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.dropdown-parent {
    font-weight: 600;
    color: var(--text-primary);
}

.dropdown-children {
    padding-left: 12px;
    border-left: 2px solid var(--primary-alpha);
    margin-left: 12px;
    margin-top: 2px;
    margin-bottom: 4px;
}

.dropdown-child {
    font-size: 13px;
    padding: 7px 12px;
}

/* ── 카테고리 브레드크럼 ── */
.category-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    margin-bottom: 12px;
}

.category-breadcrumb a {
    color: var(--primary);
    transition: var(--transition);
}

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

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

.category-breadcrumb .fa-chevron-right {
    font-size: 10px;
    color: var(--text-muted);
}

/* ── 하위 카테고리 탭 ── */
.subcategory-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 20px 0 16px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.subcategory-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.subcategory-tab:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-alpha);
}

.subcategory-tab.active {
    color: #fff;
    background: var(--primary);
    border-color: var(--primary);
}

/* ── 게시글 카테고리 경로 (부모 > 자식) ── */
.post-single-category-path {
    display: flex;
    align-items: center;
    margin-bottom: 4px;
}

.post-single-category-path .parent-cat {
    opacity: 0.8;
}

.post-single-category-path .category-path-separator {
    font-size: 10px;
    color: var(--text-muted);
    margin: 0 4px 16px;
    display: inline-flex;
    align-self: center;
    line-height: 1;
}

/* ── 관리자 하위 카테고리 행 ── */
.child-category-row {
    background: var(--bg-tertiary);
}

.child-category-row td:first-child {
    color: var(--text-secondary);
}

/* ── 역할 배지 ── */
.role-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.role-admin {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
}

.role-editor {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

/* ── 푸터 하위 카테고리 ── */
.footer-child-cat {
    padding-left: 12px;
    font-size: 13px;
}

.footer-child-cat a {
    color: var(--text-muted) !important;
}

/* ── 업데이트 내역 (Changelog) ── */
.changelog-toolbar {
    margin-bottom: 24px;
}

.changelog-search {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.changelog-search-input {
    flex: 1;
    position: relative;
}

.changelog-search-input i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

.changelog-search-input input {
    width: 100%;
    padding: 10px 14px 10px 38px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.changelog-search-input input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-alpha);
}

.changelog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.changelog-count {
    font-size: 13px;
    color: var(--text-muted);
}

.changelog-sort {
    display: flex;
    gap: 4px;
}

.sort-btn {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-muted);
    transition: var(--transition);
}

.sort-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.sort-btn.active {
    color: var(--primary);
    background: var(--primary-alpha);
    font-weight: 600;
}

/* 타임라인 */
.changelog-timeline {
    position: relative;
    padding-left: 24px;
}

.changelog-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.changelog-entry {
    margin-bottom: 32px;
    position: relative;
}

.changelog-date-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.changelog-dot {
    position: absolute;
    left: -24px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 2px var(--primary);
    z-index: 1;
}

.changelog-date {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.changelog-section-count {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 2px 10px;
    border-radius: 12px;
}

.changelog-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.changelog-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: var(--transition);
}

.changelog-section:hover {
    border-color: var(--primary-alpha);
}

.changelog-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.changelog-section-title i {
    color: var(--primary);
    font-size: 13px;
}

.changelog-items {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.changelog-items li {
    position: relative;
    padding-left: 16px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.changelog-items li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.changelog-items code {
    background: var(--bg-tertiary);
    padding: 1px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--primary);
}

.changelog-items mark {
    background: rgba(234, 179, 8, 0.3);
    color: inherit;
    padding: 0 2px;
    border-radius: 2px;
}

.changelog-section-title mark {
    background: rgba(234, 179, 8, 0.3);
    color: inherit;
    padding: 0 2px;
    border-radius: 2px;
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-toggle,
.nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 15px;
}

.search-toggle:hover,
.nav-toggle:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-secondary);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Search Overlay */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-overlay-content {
    width: 90%;
    max-width: 600px;
    position: relative;
}

.search-form-overlay {
    display: flex;
    gap: 10px;
}

.search-input-overlay {
    flex: 1;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 18px;
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition);
}

.search-input-overlay:focus {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.search-btn-overlay {
    padding: 16px 24px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-lg);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.search-btn-overlay:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

.search-close {
    position: absolute;
    top: -60px;
    right: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
}

.search-close:hover {
    color: var(--text-primary);
}

/* ---------- Main Content ---------- */
.main-content {
    min-height: calc(100vh - var(--nav-height));
    padding-top: var(--nav-height);
}

/* ---------- Hero Section ---------- */
.hero {
    position: relative;
    padding: 80px 0 60px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(0, 212, 255, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 50%;
    height: 180%;
    background: radial-gradient(ellipse, rgba(123, 47, 247, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    text-align: center;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50px;
    font-size: 13px;
    color: var(--accent-primary);
    margin-bottom: 24px;
}

.hero-badge i {
    font-size: 11px;
}

.hero h1 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero h1 .gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
}

.hero-search {
    max-width: 500px;
    margin: 0 auto;
}

.hero-search form {
    display: flex;
    gap: 8px;
}

.hero-search input {
    flex: 1;
    padding: 14px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 15px;
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition);
}

.hero-search input:focus {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.hero-search button {
    padding: 14px 24px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.hero-search button:hover {
    opacity: 0.9;
}

/* ---------- Section ---------- */
.section {
    padding: 40px 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 30px;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title i {
    color: var(--accent-primary);
    font-size: 20px;
}

.section-more {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
}

.section-more:hover {
    color: var(--accent-primary);
}

/* ---------- Post Cards Grid ---------- */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.post-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.post-card-thumbnail {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.post-card-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.post-card:hover .post-card-thumbnail img {
    transform: scale(1.05);
}

.post-card-thumbnail .no-image {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    color: var(--text-muted);
    font-size: 40px;
}

.post-card-category {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    color: var(--accent-primary);
}

.post-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-card-title {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 10px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-title a {
    color: inherit;
}

.post-card-title a:hover {
    color: var(--accent-primary);
}

.post-card-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-muted);
}

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

.post-card-meta i {
    font-size: 12px;
}

/* ---------- Featured Post (Large) ---------- */
.featured-post {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 40px;
    transition: var(--transition);
}

.featured-post:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-lg);
}

.featured-post-thumbnail {
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.featured-post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.featured-post-thumbnail .no-image {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1));
    font-size: 60px;
    color: var(--text-muted);
}

.featured-post-body {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.featured-post-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(123, 47, 247, 0.15);
    border-radius: 20px;
    font-size: 12px;
    color: var(--accent-secondary);
    font-weight: 500;
    margin-bottom: 16px;
    width: fit-content;
}

.featured-post-title {
    font-size: 26px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 14px;
}

.featured-post-title a {
    color: var(--text-primary);
}

.featured-post-title a:hover {
    color: var(--accent-primary);
}

.featured-post-excerpt {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.featured-post-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--text-muted);
}

.featured-post-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ---------- Sidebar ---------- */
.content-with-sidebar {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    align-items: start;
}

.sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 20px);
}

.sidebar-widget {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.sidebar-widget-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-widget-title i {
    color: var(--accent-primary);
    font-size: 14px;
}

/* Category Widget */
.category-list .category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
}

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

.category-list .category-item:hover {
    color: var(--accent-primary);
}

.category-list .category-count {
    background: var(--bg-tertiary);
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-muted);
}

/* Popular Posts Widget */
.popular-post-item {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.popular-post-rank {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
}

.popular-post-rank.top {
    background: var(--accent-gradient);
    color: #fff;
}

.popular-post-info {
    flex: 1;
}

.popular-post-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition);
}

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

.popular-post-views {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Tags Widget */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-item {
    padding: 5px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.tag-item:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
}

/* ---------- Single Post ---------- */
.post-single {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

.post-single-header {
    margin-bottom: 32px;
}

.post-single-category {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 20px;
    font-size: 13px;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.post-single-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.post-single-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 14px;
    color: var(--text-muted);
    flex-wrap: wrap;
}

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

.post-single-meta i {
    font-size: 13px;
}

.post-single-thumbnail {
    margin-bottom: 32px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.post-single-thumbnail img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
}

/* Post Content */
.post-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-primary);
}

.post-content h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 40px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.post-content h3 {
    font-size: 22px;
    font-weight: 600;
    margin: 32px 0 12px;
}

.post-content h4 {
    font-size: 18px;
    font-weight: 600;
    margin: 24px 0 10px;
}

.post-content p {
    margin-bottom: 18px;
}

.post-content a {
    color: var(--accent-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.post-content img {
    border-radius: var(--radius-md);
    margin: 24px 0;
}

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

.post-content ul {
    list-style: disc;
}

.post-content ol {
    list-style: decimal;
}

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

.post-content blockquote {
    margin: 24px 0;
    padding: 16px 24px;
    background: var(--bg-tertiary);
    border-left: 4px solid var(--accent-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.post-content pre {
    margin: 24px 0;
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    color: var(--accent-primary);
}

.post-content pre code {
    padding: 0;
    background: none;
    color: var(--text-primary);
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
}

.post-content th,
.post-content td {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.post-content th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 32px 0;
}

/* Post Tags */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 32px 0;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* Bookmark Remove Button */
.bookmark-remove-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--accent-primary);
    font-size: 12px;
    padding: 2px 8px;
    cursor: pointer;
    transition: all 0.2s;
    margin-left: auto;
}

.bookmark-remove-btn:hover {
    background: rgba(255, 71, 87, 0.1);
    border-color: #ff4757;
    color: #ff4757;
}

/* Bookmark Tabs */
.bookmark-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0;
}

.bookmark-tab {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: -2px;
    display: flex;
    align-items: center;
    gap: 6px;
}

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

.bookmark-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

.bookmark-tab i {
    font-size: 13px;
}

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

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

.bookmark-tab-header {
    margin-bottom: 16px;
}

.bookmark-count-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

/* Bookmark Cloud (Save/Load) */
.bookmark-cloud-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.bookmark-cloud-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px;
}

.bookmark-cloud-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.bookmark-cloud-card-header i {
    font-size: 24px;
    color: var(--accent-primary);
}

.bookmark-cloud-card-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.bookmark-cloud-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}

.bookmark-cloud-current {
    padding: 10px 14px;
    background: rgba(99, 102, 241, 0.08);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.bookmark-cloud-warning {
    padding: 10px 14px;
    background: rgba(255, 165, 0, 0.1);
    border: 1px solid rgba(255, 165, 0, 0.2);
    border-radius: 8px;
    font-size: 12px;
    color: #ffa500;
    margin-bottom: 20px;
}

.bookmark-cloud-warning i {
    margin-right: 4px;
}

.bookmark-cloud-form .form-group {
    margin-bottom: 14px;
}

.bookmark-cloud-form .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.bookmark-cloud-form .form-group label i {
    width: 16px;
    text-align: center;
    margin-right: 4px;
    color: var(--text-muted);
}

.bookmark-cloud-form input[type="text"],
.bookmark-cloud-form input[type="password"] {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.bookmark-cloud-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.btn-full {
    width: 100%;
    justify-content: center;
    margin-top: 6px;
}

/* Bookmark Saved List */
.bookmark-list-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.bookmark-list-search {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 200px;
}

.bookmark-list-search .search-input {
    flex: 1;
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

.bookmark-list-search .search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

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

.bookmark-saved-table {
    overflow-x: auto;
}

.bookmark-saved-table table {
    width: 100%;
    border-collapse: collapse;
}

.bookmark-saved-table th {
    padding: 10px 14px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.bookmark-saved-table td {
    padding: 12px 14px;
    font-size: 14px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

.bookmark-saved-table tr:hover td {
    background: rgba(99, 102, 241, 0.03);
}

.saved-list-name {
    font-weight: 500;
}

.saved-list-name i {
    color: var(--accent-primary);
    margin-right: 6px;
}

.saved-list-count .badge {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.saved-list-date {
    color: var(--text-muted);
    font-size: 13px;
    white-space: nowrap;
}

.saved-list-actions .btn-danger {
    font-size: 12px;
    padding: 4px 10px;
}

/* Bookmark Pagination */
.pagination-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 20px;
}

.pagination-info {
    font-size: 13px;
    color: var(--text-muted);
}

/* Bookmark Modal */
.bookmark-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.bookmark-modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 90%;
    max-width: 440px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    animation: fadeIn 0.2s ease;
}

.bookmark-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.bookmark-modal-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.bookmark-modal-header h3 i {
    color: #ff4757;
}

.bookmark-modal-close {
    background: none;
    border: none;
    font-size: 22px;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 0 4px;
}

.bookmark-modal-close:hover {
    color: var(--text-primary);
}

.bookmark-modal-body {
    padding: 20px 24px;
}

.bookmark-modal-warning {
    padding: 12px 16px;
    background: rgba(255, 71, 87, 0.08);
    border: 1px solid rgba(255, 71, 87, 0.15);
    border-radius: 8px;
    font-size: 14px;
    color: #ff6b7f;
    line-height: 1.6;
    margin-bottom: 16px;
}

.bookmark-modal-warning i {
    color: #ff4757;
    margin-right: 6px;
}

.bookmark-modal-target {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.bookmark-modal-body .form-group {
    margin-bottom: 0;
}

.bookmark-modal-body .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.bookmark-modal-body .form-group label i {
    width: 16px;
    text-align: center;
    margin-right: 4px;
    color: var(--text-muted);
}

.bookmark-modal-body input[type="password"] {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    box-sizing: border-box;
}

.bookmark-modal-body input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.bookmark-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.btn-secondary {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--bg-card);
    border-color: var(--text-muted);
}

.btn-danger {
    background: #ff4757;
    border: 1px solid #ff4757;
    color: #fff;
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-danger:hover {
    background: #ee3c4d;
}

/* Toast Error */
.toast-error {
    border-color: #ff4757;
}

/* Responsive: bookmark cloud grid */
@media (max-width: 768px) {
    .bookmark-cloud-grid {
        grid-template-columns: 1fr;
    }

    .bookmark-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .bookmark-tab {
        white-space: nowrap;
        padding: 10px 14px;
        font-size: 13px;
    }

    .bookmark-saved-table {
        font-size: 13px;
    }

    .bookmark-saved-table th,
    .bookmark-saved-table td {
        padding: 8px 10px;
    }
}

/* Post Share/Bookmark Bar */
.post-share-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 24px 0 32px;
    padding: 16px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.share-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.08);
}

.share-btn i {
    font-size: 14px;
}

.share-btn.bookmark-btn.active {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

/* Toast Message */
.toast-message {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--accent-primary);
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 14px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 9999;
    pointer-events: none;
}

.toast-message.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Post Navigation */
.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 40px 0;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.post-nav-item {
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.post-nav-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.post-nav-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-nav-item.next {
    text-align: right;
}

/* ---------- Page Header ---------- */
.page-header {
    padding: 60px 0 30px;
    text-align: center;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    /* background: radial-gradient(circle, rgba(0, 212, 255, 0.05), transparent); */
    pointer-events: none;
}

.page-header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
}

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

/* ---------- Pagination ---------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 48px 0;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.page-link:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
}

.page-link.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: #fff;
}

.page-dots {
    color: var(--text-muted);
    padding: 0 4px;
}

/* ---------- Comments ---------- */
.comments-section {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.comments-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
}

.comment-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition);
    resize: vertical;
}

.form-control:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

textarea.form-control {
    min-height: 120px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--border-light);
    background: var(--bg-card-hover);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

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

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

/* Comment List */
.comment-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.comment-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
}

.comment-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.comment-author {
    font-weight: 600;
    font-size: 15px;
}

.comment-date {
    font-size: 13px;
    color: var(--text-muted);
}

.comment-body {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---------- Footer ---------- */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 0;
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.footer-logo span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-logo:hover {
    color: var(--text-primary);
}

.footer-desc {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 16px;
    transition: var(--transition);
}

.footer-social a:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links ul li {
    margin-bottom: 8px;
}

.footer-links ul a {
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}

.footer-links ul a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* ---------- Scroll Top ---------- */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 900;
    box-shadow: var(--shadow-md);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    transform: translateY(-4px);
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

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

.empty-state-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    padding: 0;
    background: none;
    border: none;
    color: var(--accent-primary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

.empty-state-link:hover {
    color: var(--accent-secondary);
}

.empty-state-link i {
    font-size: 12px;
    opacity: 1;
    margin: 0;
    transition: transform 0.2s;
}

.empty-state-link:hover i {
    transform: translateX(4px);
}

/* ---------- Alert ---------- */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid rgba(74, 222, 128, 0.2);
    color: var(--success);
}

.alert-danger {
    background: rgba(248, 113, 113, 0.1);
    border: 1px solid rgba(248, 113, 113, 0.2);
    color: var(--danger);
}

.alert-warning {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.2);
    color: var(--warning);
}

/* ---------- Search Page ---------- */
.search-page {
    padding: 40px 0;
}

.search-form-page {
    max-width: 600px;
    margin: 0 auto 40px;
    display: flex;
    gap: 10px;
}

.search-result-info {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 30px;
    font-size: 15px;
}

.search-result-info strong {
    color: var(--accent-primary);
}

/* ---------- Admin Styles ---------- */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 100;
}

.admin-sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.admin-sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.admin-sidebar-logo i {
    font-size: 20px;
    color: var(--accent-primary);
}

.admin-nav {
    padding: 16px 12px;
}

.admin-nav-section {
    margin-bottom: 24px;
}

.admin-nav-title {
    padding: 0 12px;
    margin-bottom: 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
}

.admin-nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.admin-nav-link.active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-primary);
}

.admin-nav-link i {
    width: 20px;
    text-align: center;
    font-size: 14px;
}

.admin-main {
    margin-left: 260px;
    flex: 1;
    padding: 0;
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 30px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
}

.admin-topbar-title {
    font-size: 20px;
    font-weight: 600;
}

.admin-topbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-content {
    padding: 30px;
}

/* Admin Dashboard Cards */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.admin-stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: var(--transition);
}

.admin-stat-card:hover {
    border-color: var(--border-light);
}

.admin-stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    font-size: 18px;
    margin-bottom: 16px;
}

.admin-stat-icon.blue {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-primary);
}

.admin-stat-icon.purple {
    background: rgba(123, 47, 247, 0.1);
    color: var(--accent-secondary);
}

.admin-stat-icon.green {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success);
}

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

.admin-stat-value {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

.admin-stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* Admin Table */
.admin-table-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.admin-table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th {
    padding: 12px 20px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.admin-table td {
    padding: 14px 20px;
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.status-badge {
    display: inline-flex;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.status-badge.published {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success);
}

.status-badge.draft {
    background: rgba(251, 191, 36, 0.1);
    color: var(--warning);
}

.status-badge.private {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger);
}

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

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    font-size: 13px;
    transition: var(--transition);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
}

.action-btn:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.action-btn.delete:hover {
    color: var(--danger);
    border-color: var(--danger);
}

/* Admin Form */
.admin-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
}

.admin-form .form-group {
    margin-bottom: 24px;
}

.admin-form label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.admin-form .form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
}

.admin-form select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236a6a80' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 44px;
}

.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.editor-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: none;
    border: 1px solid transparent;
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
}

.editor-btn:hover {
    background: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.editor-separator {
    width: 1px;
    height: 24px;
    background: var(--border-color);
    margin: 5px 4px;
}

.editor-textarea {
    border-radius: 0 0 var(--radius-sm) var(--radius-sm) !important;
    min-height: 400px;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-primary);
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px;
    width: 100%;
    max-width: 420px;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 4px;
}

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

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form .btn {
    width: 100%;
    padding: 14px;
    font-size: 15px;
    margin-top: 8px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-with-sidebar {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
    
    .featured-post {
        grid-template-columns: 1fr;
    }
    
    .admin-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 60px;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 16px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 12px 16px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: var(--bg-tertiary);
        margin-top: 4px;
        box-shadow: none;
    }
    
    .dropdown-children {
        margin-left: 8px;
        padding-left: 8px;
    }
    
    .subcategory-tabs {
        gap: 6px;
        padding: 16px 0 12px;
    }
    
    .subcategory-tab {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .post-nav {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .featured-post-body {
        padding: 24px;
    }
    
    .featured-post-title {
        font-size: 20px;
    }
    
    .admin-sidebar {
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .admin-sidebar.active {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
    
    .admin-stats {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .admin-table-wrapper {
        overflow-x: auto;
    }
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.slide-up {
    animation: slideUp 0.6s ease forwards;
}

/* Stagger animation delays */
.post-card:nth-child(1) { animation-delay: 0.05s; }
.post-card:nth-child(2) { animation-delay: 0.1s; }
.post-card:nth-child(3) { animation-delay: 0.15s; }
.post-card:nth-child(4) { animation-delay: 0.2s; }
.post-card:nth-child(5) { animation-delay: 0.25s; }
.post-card:nth-child(6) { animation-delay: 0.3s; }
.post-card:nth-child(7) { animation-delay: 0.35s; }
.post-card:nth-child(8) { animation-delay: 0.4s; }
.post-card:nth-child(9) { animation-delay: 0.45s; }

/* ---------- Utility Classes ---------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }