/* ===== CSS Variables (citicom-inspired theme) ===== */
:root {
    /* Light Theme - corporate clean */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f6f8;
    --bg-tertiary: #e8eaed;
    --text-primary: #1a1a2e;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    
    /* Colors - citicom style (blue primary, optional red accent) */
    --primary: #0066b3;
    --primary-hover: #004d8c;
    --primary-light: rgba(0, 102, 179, 0.08);
    --secondary: #6c757d;
    --success: #198754;
    --danger: #c53030;
    --warning: #d69e2e;
    --info: #3182ce;
    
    /* Gradients - hero: clean blue/white instead of purple */
    --gradient-primary: linear-gradient(135deg, #0066b3 0%, #004d8c 100%);
    --gradient-hero: linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
    --gradient-secondary: linear-gradient(135deg, #3182ce 0%, #2c5282 100%);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

[data-theme="dark"] {
    /* Dark theme: sáng hơn chút nữa */
    --bg-primary: #3d3630;
    --bg-secondary: #4a423b;
    --bg-tertiary: #524a42;
    --text-primary: #f4ece6;
    --text-secondary: #d0c5bd;
    --text-muted: #c4b8ae;
    --border-color: #6c635a;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.2);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== Top Bar (citicom style) ===== */
.top-bar {
    background: var(--primary);
    color: #fff;
    font-size: 0.875rem;
    padding: var(--spacing-sm) 0;
}

.top-bar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-bar-left a.top-bar-home {
    color: rgba(255,255,255,0.95);
    text-decoration: none;
}

.top-bar-left a.top-bar-home:hover {
    color: #fff;
    text-decoration: underline;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.language-switcher-top {
    position: relative;
}

.language-switcher-top .language-btn-top {
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.95);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.language-switcher-top .language-btn-top:hover {
    color: #fff;
}

.language-switcher-top .language-menu {
    top: 100%;
    margin-top: 4px;
}

.hotline-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: #fff;
    text-decoration: none;
    font-weight: 500;
}

.hotline-btn:hover {
    color: rgba(255,255,255,0.9);
}

.hotline-btn i {
    font-size: 1rem;
}

/* ===== Header ===== */
.header {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

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

.logo i {
    font-size: 1.5rem;
    color: var(--primary);
}

/* Header search (citicom style) */
.header-search {
    flex: 1;
    max-width: 320px;
    display: flex;
    align-items: stretch;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-primary);
}

.header-search-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: transparent;
}

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

.header-search-input:focus {
    outline: none;
}

.header-search-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
}

.header-search-btn:hover {
    background: var(--primary);
    color: #fff;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

.mobile-menu-toggle,
.theme-toggle-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
    transition: color 0.2s ease;
}

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

/* ===== Hero Section (citicom-inspired: clean, corporate) ===== */
.hero {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><path d="M 60 0 L 0 0 0 60" fill="none" stroke="rgba(255,255,255,0.08)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 1;
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.6s ease;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    animation: fadeInUp 0.8s ease;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.hero-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    min-width: 150px;
    animation: fadeInUp 1s ease;
    border: 1px solid rgba(255,255,255,0.2);
}

.hero-stat i {
    font-size: 2rem;
    opacity: 0.9;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    transition: transform 0.3s ease;
}

.stat-number:hover {
    transform: scale(1.1);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    opacity: 0.9;
}

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

/* ===== Sections ===== */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-alt {
    background: var(--bg-primary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ===== Filter Bar ===== */
.filter-bar {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 250px;
    position: relative;
}

.search-box i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    min-width: 200px;
}

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

/* ===== Apps Grid ===== */
/* Grid chung cho cả apps và articles - xếp cạnh nhau không phân biệt loại */
.all-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.app-card-public {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.25rem; /* 20px - khoảng cách đủ từ viền đỏ */
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease, border 0.2s ease;
    cursor: pointer;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
}

.app-card-public:hover {
    box-shadow: var(--shadow-lg);
    border: 2px solid #c00;
}

/* Hàng badge: nhãn loại (Ứng dụng/Bài viết) + số thứ tự — không absolute để không che chữ */
.card-badges-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin: 0; /* Không có margin để padding của card hoạt động đúng */
    margin-bottom: var(--spacing-sm);
    flex-shrink: 0;
}

.card-type-badge {
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-align: center;
    line-height: 1.2;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}
.card-type-app {
    background: linear-gradient(135deg, #0A6BD6 0%, #084a94 100%);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.25);
}
.card-type-article {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.25);
}
[data-theme="dark"] .card-type-app {
    background: linear-gradient(135deg, #1a7ee6 0%, #0d5bb5 100%);
}
[data-theme="dark"] .card-type-article {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.card-number-badge {
    min-width: 28px;
    padding: 4px 10px;
    border-radius: 999px;
    background: #b91c1c;
    color: #fff;
    font-size: 0.875rem;
    font-weight: 700;
    text-align: center;
    border: 1px solid #991b1b;
    line-height: 1.2;
    flex-shrink: 0;
}

.app-card-header-public {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    max-width: 100%;
    min-width: 0;
}

.app-icon-public {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
    overflow: hidden;
}

.app-icon-public img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.app-info-public h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: #b91c1c;
    text-transform: uppercase;
}
[data-theme="dark"] .app-info-public h3 {
    color: #f87171;
}

.app-category-public {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 500;
}

.app-description-public {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

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

.btn-share-card {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    position: relative;
    z-index: 10;
    pointer-events: auto;
    cursor: pointer;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: var(--radius-md);
    background: var(--bg-secondary, rgba(0,0,0,0.06));
    color: var(--text-secondary, #666);
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
@media (max-width: 768px) {
    .btn-share-card { width: 44px; height: 44px; }
}
.btn-share-card:hover {
    background: var(--primary, #0068ff);
    color: #fff;
}

.app-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.app-stat-item {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.app-version-public {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn-view {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

/* ===== Articles Grid ===== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); /* Giống apps-grid để đồng bộ */
    gap: var(--spacing-lg); /* 1.5rem = 24px - giữ nguyên khoảng cách */
}

.article-card-public {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.25rem; /* 20px - giống app-card-public */
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease, border 0.2s ease;
    cursor: pointer;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.article-card-public:hover {
    box-shadow: var(--shadow-lg);
    border: 2px solid #c00;
}


.article-image-public {
    width: calc(100% + 2.5rem); /* Bù lại padding của card */
    height: 200px;
    object-fit: cover;
    background: var(--bg-tertiary);
    margin: -1.25rem -1.25rem var(--spacing-md) -1.25rem; /* Negative margin để image tràn ra ngoài padding */
}

.article-content-public {
    padding: 0; /* Bỏ padding vì đã có padding trên article-card-public */
    display: flex;
    flex-direction: column;
    flex: 1;
}

.article-meta-public {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.article-title-public {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: #b91c1c;
    text-transform: uppercase;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
[data-theme="dark"] .article-title-public {
    color: #f87171;
}

.article-excerpt-public {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-tags-public {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: auto;
}

.tag-public {
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.article-actions-public {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: 0; /* Giống app-footer-public */
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
}
.article-actions-public .btn-share-card {
    margin-right: 0;
}
.btn-view-inline {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: opacity 0.2s;
}
.btn-view-inline:hover {
    opacity: 0.9;
}

/* ===== About Section ===== */
.about-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.footer-section p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 50%;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
}

.social-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ===== About section (cuối trang chủ 22_URL, không menu) ===== */
.section.about-section-url {
    margin-bottom: 0.5rem;
}
.section.about-section-url .about-section-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}
.about-contact-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 0.75rem;
}
.about-contact-card {
    flex: 1;
    min-width: 260px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.about-contact-card:hover {
    border-color: #dc3545;
    box-shadow: 0 4px 16px rgba(220,53,69,0.15);
}
.about-contact-card-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--success);
    margin-bottom: 6px;
}
.about-contact-card-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}
.about-contact-card-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 6px 0;
    font-size: 13px;
    color: var(--text-primary);
}
.about-contact-card-row .about-link {
    color: var(--primary) !important;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    font: inherit;
    cursor: pointer;
    text-decoration: none;
}
.about-contact-card-row .about-link:hover {
    text-decoration: underline;
}
/* ===== GLOBAL: Chống extension inject span có style riêng (Kaspersky, Avast...) ===== */
/* Span không có class/id + có background hoặc border → extension inject */
span:not([class]):not([id])[style*="background-color"],
span:not([class]):not([id])[style*="background:"],
span:not([class]):not([id])[style*="border:"],
span:not([class]):not([id])[style*="border-radius"],
span:not([class]):not([id])[style*="box-shadow"],
span:not([class]):not([id])[style*="padding"],
span:not([class]):not([id])[style*="outline"] {
    all: unset !important;
    display: inline !important;
    font: inherit !important;
    color: inherit !important;
}
/* Span con trong link: reset mọi thứ */
a:not([class]) span:not([class]):not([id]),
a span:not([class]):not([id]) {
    all: unset !important;
    display: inline !important;
    font: inherit !important;
    color: inherit !important;
    background: none !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
    box-shadow: none !important;
    outline: none !important;
}
.about-contact-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.about-contact-icon-img {
    width: 16px;
    height: 16px;
}
.footer.footer-url {
    text-align: center;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}
.footer.footer-url p {
    margin: 0.25rem 0;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    overflow-y: auto;
    backdrop-filter: blur(5px);
}

/* Share modal phải có z-index cao nhất */
#shareModal {
    z-index: 999999 !important;
}

/* QR Code modal phải cao hơn share modal */
#qrCodeModal {
    z-index: 9999999 !important;
}

#qrCodeModal.active {
    z-index: 9999999 !important;
    display: flex !important;
}

#qrCodeModal .modal-content {
    z-index: 10000000 !important;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.2s ease;
}

/* Share modal phải luôn ở trên cùng - cao hơn các modal khác */
#shareModal {
    z-index: 999999 !important;
    display: none !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: rgba(0, 0, 0, 0.7) !important;
}

#shareModal.active {
    z-index: 999999 !important;
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
}

#shareModal .modal-content {
    position: relative !important;
    z-index: 1000000 !important;
    max-width: 90% !important;
    max-height: 90vh !important;
    overflow-y: auto !important;
    margin: auto !important;
}

/* Đảm bảo share modal luôn hiển thị trên các modal khác */
#appDetailModal.active ~ #shareModal.active,
#articleDetailModal.active ~ #shareModal.active {
    z-index: 999999 !important;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

.modal-large {
    max-width: 1000px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: color 0.2s ease;
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
}

/* Cửa sổ chi tiết app/article: full màn hình như trang web trên mọi thiết bị */
#appDetailModal.active,
#articleDetailModal.active {
    padding: 0;
    align-items: stretch;
    justify-content: stretch;
}
#appDetailModal.active .modal-content,
#articleDetailModal.active .modal-content {
    width: 100vw;
    height: 100vh;
    max-width: none;
    max-height: none;
    border-radius: 0;
    margin: 0;
    box-shadow: none;
    animation: none;
}
#appDetailModal.active .modal-body,
#articleDetailModal.active .modal-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* ===== App Detail Content ===== */
.app-detail-header {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.app-detail-icon {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-lg);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    flex-shrink: 0;
    overflow: hidden;
}

.app-detail-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.app-detail-info h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.app-detail-meta {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.app-detail-description {
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

/* When description contains Markdown */
.app-detail-description.markdown-body {
    color: var(--text-primary);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.app-detail-description.markdown-body h1:first-child,
.app-detail-description.markdown-body h2:first-child {
    margin-top: 0;
}

.versions-list {
    margin-top: var(--spacing-xl);
}

.versions-list h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.version-item-detail {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
}

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

.version-number-detail {
    font-size: 1.125rem;
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

.version-badge-detail {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.version-badge-detail.major {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

.version-badge-detail.minor {
    background: rgba(255, 193, 7, 0.1);
    color: #ff9800;
}

.version-badge-detail.patch {
    background: rgba(13, 110, 253, 0.1);
    color: var(--primary);
}

.version-notes-detail {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

/* When version notes contain Markdown */
.version-notes-detail.markdown-body {
    color: var(--text-primary);
    font-size: 0.875rem;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary);
}

.version-notes-detail.markdown-body h1,
.version-notes-detail.markdown-body h2,
.version-notes-detail.markdown-body h3 {
    font-size: 1em;
    margin-top: 0.5em;
    margin-bottom: 0.5em;
}

.version-notes-detail.markdown-body h1:first-child,
.version-notes-detail.markdown-body h2:first-child,
.version-notes-detail.markdown-body h3:first-child {
    margin-top: 0;
}

.version-notes-detail.markdown-body p:last-child {
    margin-bottom: 0;
}

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

.version-date-detail {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===== Article Detail Content ===== */
.article-detail-header {
    margin-bottom: var(--spacing-xl);
}

.article-detail-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.article-detail-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.article-detail-meta {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.article-detail-content {
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 1.125rem;
    text-align: left;
}

/* Article detail modal: triệt để căn trái, không căn giữa (chữ trong card/giao diện nhỏ) */
#articleDetailModal,
#articleDetailModal .modal-content,
#articleDetailModal .modal-body,
#articleDetailModal .modal-header,
#articleDetailModal .modal-header h2,
#articleDetailModal .modal-actions,
#articleDetailContent,
#articleDetailContent * {
    text-align: left !important;
}
#articleDetailContent {
    max-width: 100%;
}
#articleDetailContent ul,
#articleDetailContent ol {
    padding-left: 1.5em;
}
#articleDetailContent li {
    margin-bottom: 0.25em;
}

/* ===== Professional Markdown Styling ===== */
.markdown-body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-primary);
    word-wrap: break-word;
    max-width: 100%;
}
/* Markdown trong modal bài viết: luôn căn trái */
#articleDetailContent .markdown-body,
#articleDetailContent .markdown-body * {
    text-align: left !important;
}

/* Headings */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    margin-top: 2em;
    margin-bottom: 1em;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-primary);
    scroll-margin-top: 80px;
}

.markdown-body h1 {
    font-size: 2.25em;
    padding-bottom: 0.3em;
    border-bottom: 2px solid var(--border-color);
    margin-top: 0;
}

.markdown-body h2 {
    font-size: 1.875em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border-color);
    margin-top: 1.5em;
}

.markdown-body h3 {
    font-size: 1.5em;
    margin-top: 1.25em;
}

.markdown-body h4 {
    font-size: 1.25em;
}

.markdown-body h5 {
    font-size: 1.125em;
}

.markdown-body h6 {
    font-size: 1em;
    color: var(--text-secondary);
}

/* Paragraphs */
.markdown-body p {
    margin-top: 0;
    margin-bottom: 1em;
    line-height: 1.8;
}

/* Lists */
.markdown-body ul,
.markdown-body ol {
    margin-top: 0;
    margin-bottom: 1em;
    padding-left: 2em;
}

.markdown-body ul {
    list-style-type: disc;
}

.markdown-body ol {
    list-style-type: decimal;
}

.markdown-body li {
    margin-top: 0.5em;
    margin-bottom: 0.5em;
    line-height: 1.8;
}

.markdown-body li > p {
    margin-top: 1em;
}

.markdown-body li + li {
    margin-top: 0.5em;
}

/* Nested lists */
.markdown-body ul ul,
.markdown-body ol ul {
    list-style-type: circle;
    margin-top: 0.5em;
}

.markdown-body ul ul ul,
.markdown-body ol ul ul {
    list-style-type: square;
}

/* Links */
.markdown-body a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
}

.markdown-body a:hover {
    color: var(--primary-hover);
    border-bottom-color: var(--primary-hover);
}

.markdown-body a:visited {
    color: var(--primary);
}

/* Bold and Italic */
.markdown-body strong,
.markdown-body b {
    font-weight: 700;
    color: var(--text-primary);
}

.markdown-body em,
.markdown-body i {
    font-style: italic;
}

.markdown-body strong em,
.markdown-body em strong {
    font-weight: 700;
    font-style: italic;
}

/* Code */
.markdown-body code {
    padding: 0.2em 0.4em;
    margin: 0;
    font-size: 85%;
    background-color: var(--bg-tertiary);
    border-radius: 3px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    color: var(--text-primary);
}

.markdown-body pre {
    padding: 1em;
    overflow: auto;
    font-size: 85%;
    line-height: 1.45;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: 1em;
    border: 1px solid var(--border-color);
}

.markdown-body pre code {
    display: inline;
    max-width: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    line-height: inherit;
    word-wrap: normal;
    background-color: transparent;
    border: 0;
    font-size: 100%;
}

.markdown-body pre > code {
    display: block;
    padding: 0;
    margin: 0;
    word-break: normal;
    white-space: pre;
    background: transparent;
    border: 0;
}

/* Blockquotes */
.markdown-body blockquote {
    padding: 0 1em;
    color: var(--text-secondary);
    border-left: 4px solid var(--primary);
    margin: 1em 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: 1em 1.5em;
}

.markdown-body blockquote > :first-child {
    margin-top: 0;
}

.markdown-body blockquote > :last-child {
    margin-bottom: 0;
}

.markdown-body blockquote p {
    margin-bottom: 0.5em;
}

/* Horizontal Rules */
.markdown-body hr {
    height: 2px;
    padding: 0;
    margin: 2em 0;
    background-color: var(--border-color);
    border: 0;
    border-radius: 2px;
}

/* Tables */
.markdown-body table {
    border-spacing: 0;
    border-collapse: collapse;
    display: block;
    width: 100%;
    overflow: auto;
    margin: 1em 0;
}

.markdown-body table th {
    font-weight: 700;
    background-color: var(--bg-tertiary);
}

.markdown-body table th,
.markdown-body table td {
    padding: 0.75em 1em;
    border: 1px solid var(--border-color);
    text-align: left;
}

.markdown-body table tr {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.markdown-body table tr:nth-child(2n) {
    background-color: var(--bg-secondary);
}

/* Images */
.markdown-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 1em 0;
    box-shadow: var(--shadow-md);
}

.markdown-body img[align="left"] {
    float: left;
    margin-right: 1em;
    margin-bottom: 1em;
}

.markdown-body img[align="right"] {
    float: right;
    margin-left: 1em;
    margin-bottom: 1em;
}

/* Task Lists */
.markdown-body input[type="checkbox"] {
    margin-right: 0.5em;
    cursor: pointer;
}

.markdown-body .task-list-item {
    list-style-type: none;
    padding-left: 0;
}

.markdown-body .task-list-item input {
    margin-left: -1.5em;
}

/* Emojis - Ensure proper display */
.markdown-body {
    font-variant-emoji: emoji;
    font-feature-settings: "liga" 1, "calt" 1;
}

.markdown-body .emoji,
.markdown-body :contains("🌐"),
.markdown-body :contains("✅"),
.markdown-body :contains("🚀") {
    font-style: normal;
    font-weight: normal;
    font-size: 1.2em;
    vertical-align: middle;
    display: inline-block;
}

/* Ensure emojis in headings are properly sized */
.markdown-body h1 .emoji,
.markdown-body h2 .emoji,
.markdown-body h3 .emoji {
    font-size: inherit;
    vertical-align: baseline;
}

/* YouTube embeds in Markdown */
.markdown-body .youtube-embed-wrapper {
    margin: 2em 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .markdown-body {
        font-size: 14px;
    }
    
    .markdown-body h1 {
        font-size: 1.875em;
    }
    
    .markdown-body h2 {
        font-size: 1.5em;
    }
    
    .markdown-body h3 {
        font-size: 1.25em;
    }
    
    .markdown-body table {
        font-size: 0.875em;
    }
    
    .markdown-body pre {
        font-size: 0.75em;
        padding: 0.75em;
    }
}

/* Print styles */
@media print {
    .markdown-body {
        font-size: 12pt;
        line-height: 1.6;
    }
    
    .markdown-body h1,
    .markdown-body h2,
    .markdown-body h3 {
        page-break-after: avoid;
    }
    
    .markdown-body pre,
    .markdown-body blockquote {
        page-break-inside: avoid;
    }
}

.article-detail-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .top-bar .container {
        padding: 0 var(--spacing-md);
    }
    
    .top-bar-right {
        gap: var(--spacing-md);
    }
    
    .header-search {
        display: none;
    }
    
    .nav-menu {
        position: fixed;
        top: 110px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .mobile-menu-toggle,
    .theme-toggle-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* Ở màn hình nhỏ: 1 cột */
    .all-cards-grid,
    .apps-grid,
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .app-detail-header {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ===== New Professional Features ===== */

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

/* Language Switcher */
.language-switcher {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

.language-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1000;
    overflow: hidden;
}

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

.lang-option {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: background 0.2s ease;
    position: relative;
}

.lang-option:hover {
    background: var(--bg-secondary);
}

.lang-option.active {
    background: var(--bg-tertiary);
}

.lang-option.active .fa-check {
    display: inline-block !important;
    margin-left: auto;
    color: var(--primary);
}

.lang-flag {
    font-size: 1.25rem;
}

/* Advanced Controls */
.advanced-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.controls-left,
.controls-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.view-mode-toggle {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-primary);
}

.view-mode-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.view-mode-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

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

/* Content Wrapper */
.content-wrapper {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.filters-sidebar {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

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

.filters-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.close-filters {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.25rem;
}

.filters-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.filter-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
}

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

.filter-checkboxes label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: normal;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
}

.filter-checkboxes label:hover {
    background: var(--bg-secondary);
}

.filter-checkboxes input[type="checkbox"] {
    cursor: pointer;
}

.main-content-area {
    min-width: 0;
}

.results-info {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pagination-wrapper {
    margin-top: var(--spacing-xl);
    display: flex;
    justify-content: center;
}

/* List View */
.apps-container.list-view .apps-grid,
.articles-container.list-view .articles-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.apps-container.list-view .app-card-public,
.articles-container.list-view .article-card-public {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.apps-container.list-view .app-card-header-public {
    flex-direction: row;
    margin-bottom: 0;
    margin-right: var(--spacing-lg);
}

.apps-container.list-view .app-description-public {
    -webkit-line-clamp: 1;
    margin-bottom: 0;
}

/* Responsive for filters */
@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .filters-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        max-width: 400px;
        height: 100vh;
        z-index: 2000;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        border-radius: 0;
        max-height: 100vh;
    }
    
    .filters-sidebar.active {
        transform: translateX(0);
    }
    
    .close-filters {
        display: block;
    }
    
    .filters-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .filters-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

.contact-text {
    display: none;
}

@media (min-width: 768px) {
    .contact-text {
        display: inline;
    }
}

/* Hero Actions */
.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    transition: background 0.2s ease;
}

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

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--primary);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-answer a {
    color: var(--primary);
    text-decoration: none;
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

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

.contact-details a:hover {
    text-decoration: underline;
}

.contact-details p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

.feedback-form-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.feedback-form-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.form-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Newsletter Section */
.newsletter-section {
    background: var(--gradient-primary);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    color: white;
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.newsletter-content h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.newsletter-content p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-md);
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.newsletter-form input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
}

/* ===== Floating Contact (ảnh 1) ===== */
.floating-contact {
    position: fixed;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
    pointer-events: none;
}

.floating-contact .floating-contact-btn {
    pointer-events: auto;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.floating-contact .floating-contact-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 16px rgba(0,0,0,0.25);
}

.floating-contact-phone {
    background: #e53935;
    color: #fff;
}

.floating-contact-phone i {
    font-size: 1.35rem;
}

.floating-contact-email {
    background: #fff;
    color: #dc3545;
    border: 2px solid #dc3545;
}

.floating-contact-email img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    display: block;
}

.floating-contact-zalo {
    background: #fff;
    color: #0068ff;
    border: 2px solid #0068ff;
}

.floating-contact-zalo img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    display: block;
}

.floating-contact-facebook {
    background: #fff;
    color: #1877F2;
    border: 2px solid #1877F2;
}

.floating-contact-facebook img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    display: block;
}

/* Thanh trạng thái cuộn trang */
.scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    width: 0%;
    background: var(--primary);
    z-index: 10002;
    transition: width 0.08s ease-out;
    pointer-events: none;
}

/* Back to Top Button (đặt trái hơn để không che floating contact) */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 90px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-hover);
    transform: translateY(-5px);
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transform: translateX(400px);
    transition: all 0.3s ease;
    min-width: 300px;
    border-left: 4px solid var(--primary);
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

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

.toast-icon {
    font-size: 1.25rem;
}

.toast.success .toast-icon {
    color: var(--success);
}

.toast.error .toast-icon {
    color: var(--danger);
}

.toast.info .toast-icon {
    color: var(--info);
}

.toast-message {
    color: var(--text-primary);
    font-weight: 500;
}

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

.modal-actions .btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-actions .btn-icon:hover {
    background: var(--primary);
    color: white;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.pagination button {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.pagination button:hover:not(:disabled) {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Loading State */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

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

.skeleton-card {
    height: 200px;
    margin-bottom: var(--spacing-md);
}

/* Performance Optimization */
.apps-grid,
.articles-grid {
    contain: layout style paint;
}

.app-card-public,
.article-card-public {
    will-change: transform;
    contain: layout style paint;
}

/* Lazy Loading Images */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Links Table Section */
.links-table-section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.links-table-title {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Bảng URL: kẻ lưới như Excel - bao nhiêu dòng/cột cũng tự động có viền ô */
.links-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    border: 1px solid #dc2626; /* Màu đỏ cho border bảng */
    box-shadow: var(--shadow-sm);
    table-layout: auto;
    --links-grid-color: #dc2626; /* Màu đỏ cho các đường kẻ giữa các cột và ô */
}

/* Màu viền lưới màu đỏ cho dark theme */
[data-theme="dark"] .links-table {
    --links-grid-color: #ef4444; /* Đỏ sáng hơn cho dark theme */
    border-color: #ef4444;
}

.links-table thead {
    background: var(--primary-light, #e8f4fc);
    border-bottom: 2px solid #dc2626; /* Màu đỏ cho border dưới header */
}

[data-theme="dark"] .links-table thead {
    background: rgba(0, 102, 179, 0.2);
    border-bottom-color: #ef4444; /* Màu đỏ cho dark theme */
}

[data-theme="dark"] .links-table th,
[data-theme="dark"] .links-table td {
    border-color: #ef4444 !important; /* Màu đỏ sáng hơn cho dark theme */
}

[data-theme="dark"] .links-table {
    border-color: #ef4444;
}

[data-theme="dark"] .links-table tbody tr:first-child td {
    border-top-color: #ef4444;
}

.links-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    white-space: normal; /* Cho phép wrap text để không bị mất chữ */
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.4;
    border: 1px solid #dc2626; /* Màu đỏ cho border header */
    border-bottom: 2px solid #dc2626; /* Màu đỏ đậm hơn cho border dưới header */
}

.links-table th i {
    margin-right: var(--spacing-xs);
    color: var(--primary);
    display: inline-block;
    flex-shrink: 0;
}

/* Mọi ô dữ liệu đều có viền 4 cạnh → lưới tự động theo số dòng/cột */
.links-table td {
    padding: var(--spacing-md);
    vertical-align: top;
    border: 1px solid #dc2626; /* Màu đỏ cho border các ô */
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Cột Mô tả cho phép wrap text */
.links-table-col-desc {
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 300px;
    line-height: 1.5;
}

.links-table tbody tr {
    transition: background 0.2s ease;
}

.links-table tbody tr:hover {
    background: var(--bg-secondary);
}

/* Highlight first row (main app URL) */
.links-table tbody tr:first-child {
    background: var(--bg-secondary);
    font-weight: 500;
}

.links-table tbody tr:first-child:hover {
    background: var(--bg-tertiary);
}

.links-table tbody tr:first-child td {
    border-top: 2px solid #dc2626; /* Màu đỏ cho border trên row đầu tiên */
}

.links-table tbody tr:first-child .btn-link-action {
    background: var(--primary);
    color: white;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
}

.link-url {
    color: var(--primary);
    text-decoration: none;
    word-break: break-all;
    transition: color 0.2s ease;
}

.link-url:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.link-type-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.link-type-official {
    background: rgba(25, 118, 210, 0.15);
    color: #64b5f6;
}

.link-type-github {
    background: rgba(36, 41, 46, 0.15);
    color: #c9d1d9;
}

.link-type-documentation {
    background: rgba(46, 125, 50, 0.15);
    color: #81c784;
}

.link-type-demo {
    background: rgba(230, 81, 0, 0.15);
    color: #ffb74d;
}

.link-type-download {
    background: rgba(2, 119, 189, 0.15);
    color: #4fc3f7;
}

.link-type-support {
    background: rgba(194, 24, 91, 0.15);
    color: #f48fb1;
}

.link-type-forum {
    background: rgba(123, 31, 162, 0.15);
    color: #ba68c8;
}

.link-type-reference {
    background: rgba(46, 125, 50, 0.15);
    color: #81c784;
}

.link-type-source {
    background: rgba(230, 81, 0, 0.15);
    color: #ffb74d;
}

.link-type-related {
    background: rgba(25, 118, 210, 0.15);
    color: #64b5f6;
}

.link-type-video {
    background: rgba(198, 40, 40, 0.15);
    color: #ef5350;
}

.link-type-other {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* Dark mode adjustments */
[data-theme="dark"] .link-type-official {
    background: rgba(100, 181, 246, 0.2);
    color: #90caf9;
}

[data-theme="dark"] .link-type-github {
    background: rgba(201, 209, 217, 0.2);
    color: #e1e4e8;
}

[data-theme="dark"] .link-type-documentation {
    background: rgba(129, 199, 132, 0.2);
    color: #a5d6a7;
}

[data-theme="dark"] .link-type-demo {
    background: rgba(255, 183, 77, 0.2);
    color: #ffcc80;
}

[data-theme="dark"] .link-type-download {
    background: rgba(79, 195, 247, 0.2);
    color: #81d4fa;
}

[data-theme="dark"] .link-type-support {
    background: rgba(244, 143, 177, 0.2);
    color: #f8bbd0;
}

[data-theme="dark"] .link-type-forum {
    background: rgba(186, 104, 200, 0.2);
    color: #ce93d8;
}

[data-theme="dark"] .link-type-reference {
    background: rgba(129, 199, 132, 0.2);
    color: #a5d6a7;
}

[data-theme="dark"] .link-type-source {
    background: rgba(255, 183, 77, 0.2);
    color: #ffcc80;
}

[data-theme="dark"] .link-type-related {
    background: rgba(100, 181, 246, 0.2);
    color: #90caf9;
}

[data-theme="dark"] .link-type-video {
    background: rgba(239, 83, 80, 0.2);
    color: #ef9a9a;
}

.btn-link-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

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

/* Ô Truy cập: nút Tải xuống + dung lượng bên cạnh */
.link-access-cell {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}
.link-size {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    white-space: nowrap;
}
[data-theme="dark"] .link-size {
    color: var(--text-muted);
}

/* Trên màn hình nhỏ: chỉ hiển thị icon, ẩn text "Tải xuống" */
@media (max-width: 768px) {
    .btn-link-action {
        padding: var(--spacing-sm);
        min-width: 44px;
        width: 44px;
        height: 44px;
        gap: 0;
    }
    
    /* Ẩn text "Tải xuống" trên màn hình nhỏ */
    .btn-link-action .btn-link-text {
        display: none;
    }
    
    /* Đảm bảo icon vẫn hiển thị và căn giữa */
    .btn-link-action i {
        display: inline-block !important;
        margin: 0;
        font-size: 1rem;
    }
}

/* Trên màn hình đủ rộng: hiển thị cả icon và text */
@media (min-width: 769px) {
    .btn-link-action .btn-link-text {
        display: inline;
    }
    
    .btn-link-action {
        padding: var(--spacing-xs) var(--spacing-md);
        width: auto;
        min-width: auto;
    }
}

.text-muted {
    color: var(--text-muted);
    font-style: italic;
}

.links-table-col-time {
    white-space: normal; /* Cho phép wrap trên màn hình nhỏ */
    font-size: 0.875rem;
    color: var(--text-secondary);
    min-width: 140px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Màn hình nhỏ / điện thoại: ẩn cột Loại, còn Nhãn | Mô tả | Truy cập | Thời gian */
@media (max-width: 768px) {
    .links-table {
        font-size: 0.875rem;
        display: table !important;
        width: 100%;
        table-layout: fixed; /* Fixed layout để kiểm soát tốt hơn */
        border-collapse: separate;
        border-spacing: 0;
    }
    
    .links-table th,
    .links-table td {
        padding: var(--spacing-sm);
        overflow: visible; /* Cho phép text hiển thị */
        word-break: break-word; /* Tự động xuống dòng */
        border-color: #dc2626 !important; /* Đảm bảo border màu đỏ trên mobile */
    }
    
    /* Header (th) phải wrap text để không bị mất chữ */
    .links-table th {
        white-space: normal !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        line-height: 1.3;
        font-size: 0.75rem;
        padding: var(--spacing-xs) var(--spacing-sm);
        min-height: 2.5rem; /* Đảm bảo có đủ không gian cho text wrap */
    }
    
    /* Ẩn cột Loại trên màn hình nhỏ */
    .links-table-col-type {
        display: none !important;
    }
    
    /* Đảm bảo 4 cột còn lại luôn hiển thị */
    .links-table th:not(.links-table-col-type),
    .links-table td:not(.links-table-col-type) {
        display: table-cell !important;
    }
    
    /* Cột Nhãn - cho phép wrap nhưng giới hạn width */
    .links-table th:first-child,
    .links-table td:first-child {
        width: 25%;
        min-width: 80px;
        white-space: normal;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    /* Cột Mô tả - cho phép wrap và không bị cắt */
    .links-table-col-desc {
        width: 35%;
        min-width: 100px;
        max-width: none;
        word-wrap: break-word;
        white-space: normal !important; /* Quan trọng: cho phép wrap */
        overflow-wrap: break-word;
        hyphens: auto;
        line-height: 1.4;
    }
    
    /* Cột Truy cập - cho phép wrap nếu cần */
    .links-table th:nth-child(3),
    .links-table td:nth-child(3) {
        width: 20%;
        min-width: 70px;
        white-space: normal;
        word-wrap: break-word;
    }
    
    /* Cột Thời gian - cho phép wrap để hiển thị đầy đủ */
    .links-table-col-time {
        width: 20%;
        min-width: 90px;
        font-size: 0.75rem;
        white-space: normal !important;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    /* Đảm bảo icon trong header không bị tách khỏi text */
    .links-table th i {
        display: inline-block;
        margin-right: 0.25rem;
        flex-shrink: 0;
    }
    
    /* Đảm bảo table responsive với horizontal scroll nếu cần */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        display: block;
        width: 100%;
    }
    
    /* Đảm bảo các cột không bị chồng đè */
    .links-table td {
        border: 1px solid #dc2626 !important; /* Màu đỏ cho border trên mobile */
        vertical-align: top;
    }
    
    /* Đảm bảo header cũng có border màu đỏ */
    .links-table th {
        border-color: #dc2626 !important;
    }
}

/* YouTube Videos Section */
.youtube-videos-section {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.youtube-videos-section h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.youtube-videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.youtube-embed-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.youtube-embed-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.youtube-embed-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.youtube-embed-desc {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

[data-theme="dark"] .youtube-embed-desc {
    color: var(--text-muted);
}

/* ===== Share Modal Styles ===== */
.modal-medium {
    max-width: 600px;
}

.modal-small {
    max-width: 400px;
}

.share-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.share-preview {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.share-preview-content {
    display: flex;
    gap: var(--spacing-md);
    align-items: start;
    flex-direction: row; /* Đảm bảo image ở bên trái (trên) */
}

.share-preview-image {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-md);
    flex-shrink: 0;
    order: -1; /* Đảm bảo image luôn ở đầu (bên trái) */
    border: 2px solid var(--border-color);
    background: var(--bg-tertiary);
}

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

.share-preview-info h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.share-preview-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.share-platforms {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.share-platform-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    min-height: 100px;
}

.share-platform-btn:hover {
    border-color: var(--platform-color, var(--primary));
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.share-platform-btn:active {
    transform: translateY(0);
}

.share-platform-btn i {
    font-size: 2rem;
    color: var(--platform-color, var(--primary));
    margin-bottom: var(--spacing-xs);
}

.share-platform-btn img.zalo-icon {
    width: 2rem;
    height: 2rem;
    object-fit: contain;
    margin-bottom: var(--spacing-xs);
}

.share-platform-btn span {
    text-align: center;
    word-break: break-word;
}

.share-link-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.share-link-section label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.share-link-input {
    display: flex;
    gap: var(--spacing-sm);
}

.share-link-input input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.share-link-input input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.btn-copy-link {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.btn-copy-link:active {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .youtube-videos-grid {
        grid-template-columns: 1fr;
    }
    
    .links-grid {
        grid-template-columns: 1fr;
    }
    
    .share-platforms {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .share-platform-btn {
        min-height: 90px;
        padding: var(--spacing-sm);
    }
    
    .share-platform-btn i {
        font-size: 1.5rem;
    }

    .share-platform-btn img.zalo-icon {
        width: 1.5rem;
        height: 1.5rem;
    }

    .share-platform-btn span {
        font-size: 0.75rem;
    }
    
    .share-link-input {
        flex-direction: column;
    }
    
    .btn-copy-link {
        width: 100%;
        justify-content: center;
    }
}

/* Share Buttons */
.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.share-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.2s ease;
}

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

/* Responsive Updates */
@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form input,
    .newsletter-form button {
        width: 100%;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 80px;
        width: 45px;
        height: 45px;
    }

    .floating-contact {
        right: 12px;
    }

    .floating-contact .floating-contact-btn {
        width: 46px;
        height: 46px;
    }
    
    .toast {
        right: 10px;
        left: 10px;
        min-width: auto;
    }
    
    .content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .advanced-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .controls-left,
    .controls-right {
        width: 100%;
        justify-content: space-between;
    }
}

/* ===== Layout card-menu: overlay, sidebar, card grid ===== */
/* Overlay khi mở sidebar */
body.layout-card-menu #cardMenuOverlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    display: none;
    z-index: 998;
}
/* Nav tabs trong topbar (Apps | Articles) */
body.layout-card-menu .topbar .nav-tab {
    color: #fff;
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-weight: 500;
}
body.layout-card-menu .topbar .nav-tab:hover {
    background: rgba(255,255,255,0.15);
}
body.layout-card-menu .topbar .nav-tab.active {
    background: rgba(255,255,255,0.25);
}
/* Thanh tìm kiếm kiểu Google: nút active (đang nghe / vừa bấm) */
body.layout-card-menu .tool-btn.active,
.tool-btn.active {
    background: rgba(26,115,232,0.2);
    color: #1a73e8;
}
body.layout-card-menu body.dark .tool-btn.active,
body.dark .tool-btn.active {
    background: rgba(138,180,248,0.25);
    color: #8ab4f8;
}
/* Sidebar menu: màu (--panel, --muted, --accent) */
body.layout-card-menu #cardMenuSidebar {
    background: var(--panel);
    border-right: 1px solid var(--border);
    color: var(--muted);
}
body.layout-card-menu #cardMenuSidebar .card-menu-item,
body.layout-card-menu #cardMenuSidebar .card-menu-all,
body.layout-card-menu #cardMenuSidebar .card-menu-category-title,
body.layout-card-menu #cardMenuSidebar .card-menu-id {
    background: transparent;
    color: var(--muted);
    border-radius: 8px;
}
body.layout-card-menu #cardMenuSidebar .card-menu-item:hover,
body.layout-card-menu #cardMenuSidebar .card-menu-all:hover,
body.layout-card-menu #cardMenuSidebar .card-menu-category-title:hover,
body.layout-card-menu #cardMenuSidebar .card-menu-id:hover {
    background: rgba(255,255,255,0.08);
    color: var(--muted);
}
body.layout-card-menu #cardMenuSidebar .card-menu-item.active,
body.layout-card-menu #cardMenuSidebar .card-menu-all.active,
body.layout-card-menu #cardMenuSidebar .card-menu-category-title.active,
body.layout-card-menu #cardMenuSidebar .card-menu-id.active {
    background: var(--accent);
    color: #fff;
}
body.layout-card-menu #cardMenuSidebar .badge {
    background: var(--accent);
    color: #fff;
}
/* Apps | Articles trong menu (như ảnh: nền sáng khi active) */
body.layout-card-menu #cardMenuSidebar .sidebar-tabs .nav-tab {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--muted);
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s, color 0.2s;
}
body.layout-card-menu #cardMenuSidebar .sidebar-tabs .nav-tab:hover {
    background: rgba(255,255,255,0.08);
    color: var(--muted);
}
body.layout-card-menu #cardMenuSidebar .sidebar-tabs .nav-tab.active {
    background: var(--accent);
    color: #fff;
}
body.layout-card-menu #cardMenuSidebar .card-menu-search,
body.layout-card-menu #cardMenuSidebar #menuFilterInput {
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--muted);
}
body.layout-card-menu #cardMenuSidebar #menuFilterInput::placeholder {
    color: var(--muted);
    opacity: 0.8;
}
body.layout-card-menu #cardMenuSidebar .card-menu-filter {
    margin-bottom: 12px;
}
body.layout-card-menu #cardMenuSidebar .sidebar-tabs {
    margin-bottom: 12px;
}
/* Content area: 1 cột, section active mới hiện (logic card) */
body.layout-card-menu .card-content-area.content {
    display: block;
    width: 100%;
}
body.layout-card-menu .card-section {
    display: none;
}
body.layout-card-menu .card-section.active {
    display: block;
}
body.layout-card-menu .top-bar,
body.layout-card-menu .header .header-search,
body.layout-card-menu .header-actions,
body.layout-card-menu .footer { display: none !important; }

/* Bỏ thanh "Showing X to Y of Z results" trong layout-card-menu */
body.layout-card-menu .results-info { display: none !important; }

/* Thanh cuộn + nút mũi tên: luôn hiện trong layout-card-menu, z-index cao để không bị che */
body.layout-card-menu .scroll-progress-bar {
    display: block !important;
    z-index: 10002 !important;
}
body.layout-card-menu .back-to-top {
    display: flex !important;
    align-items: center;
    justify-content: center;
    z-index: 10001 !important;
}

.layout-card-menu .header-minimal {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
}

.layout-card-menu .header-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

/* Nút ba gạch (hamburger) luôn hiển thị (cả màn hình to) */
.layout-card-menu .menu-toggle {
    display: flex;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 10px;
    background: #e67e22;
    color: white;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    padding: 0;
    box-shadow: 0 0 16px rgba(230, 126, 34, 0.5), 0 4px 12px rgba(0,0,0,0.15);
    transition: transform 0.2s, box-shadow 0.2s;
}

.layout-card-menu .menu-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(230, 126, 34, 0.6), 0 4px 14px rgba(0,0,0,0.2);
}

.layout-card-menu .menu-toggle:focus {
    outline: none;
}

.layout-card-menu .menu-toggle .hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    align-items: center;
}

.layout-card-menu .menu-toggle .hamburger span {
    display: block;
    width: 22px;
    height: 3px;
    background: white;
    border-radius: 2px;
    box-shadow: 0 0 6px rgba(255,255,255,0.6);
}

/* Overlay khi mở menu mobile */
.layout-card-menu .card-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.4);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.layout-card-menu .card-menu-overlay.active {
    display: block;
    opacity: 1;
}

body.menu-open {
    overflow: hidden;
}

.layout-card-menu .nav-tabs {
    display: flex;
    gap: 0;
}

.layout-card-menu .nav-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-md);
}

.layout-card-menu .nav-tab:hover { color: var(--primary); }

.layout-card-menu .nav-tab.active {
    color: var(--primary);
    background: var(--primary-light);
}

.main-with-menu {
    display: flex;
    min-height: calc(100vh - 60px);
}

/* Menu trái (dark theme như ảnh URL). Khi có 3 gạch: mặc định ẩn menu (sidebar-collapsed) */
.card-menu-sidebar {
    width: 280px;
    min-width: 280px;
    background: #252936;
    transition: width 0.25s ease, min-width 0.25s ease, padding 0.25s ease, overflow 0.25s ease;
    color: #e4e6eb;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.card-menu-filter {
    margin-bottom: var(--spacing-md);
}

.card-menu-search {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #3a3f4b;
    border-radius: var(--radius-md);
    background: #1a1d29;
    color: #e4e6eb;
    font-size: 0.875rem;
}

.card-menu-search::placeholder { color: #8a8d91; }

.card-menu-search:focus {
    outline: none;
    border-color: var(--primary);
}

.card-menu-list { padding: 0; }

.card-menu-item {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 2px;
}

.card-menu-item:hover { background: #2f3442; }

.card-menu-item.active {
    background: #e67e22;
    color: #fff;
}

.card-menu-all { font-weight: 600; }

.card-menu-category {
    margin-top: var(--spacing-sm);
}

.card-menu-category-title {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
}

.card-menu-category-title:hover { background: #2f3442; }

.card-menu-category-title.active {
    background: #e67e22;
    color: #fff;
}

.card-menu-id.active {
    background: #e67e22;
    color: #fff;
}

.card-menu-category-title i {
    transition: transform 0.2s;
    font-size: 0.7rem;
}

.card-menu-category.open .card-menu-category-title i { transform: rotate(180deg); }

.card-menu-category-items {
    padding-left: var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease;
}

.card-menu-category.open .card-menu-category-items { max-height: 500px; }

.card-menu-id {
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    font-size: 0.8rem;
    color: #b0b3b8;
    border-radius: var(--radius-sm);
}

.card-menu-id:hover { background: #2f3442; color: #fff; }

.card-menu-id::before { content: '► '; }

/* Giao diện to: menu ẩn mặc định, khi bấm 3 gạch hiển thị đè lên card */
.layout-card-menu .card-menu-sidebar {
    position: fixed !important;
    left: 0;
    top: 0;
    width: 280px;
    max-width: 85vw;
    height: 100vh;
    min-width: 0;
    z-index: 1020;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 4px 0 20px rgba(0,0,0,0.2);
}
body.layout-card-menu:not(.sidebar-collapsed) .card-menu-sidebar,
body.layout-card-menu .card-menu-sidebar.open {
    transform: translateX(0);
}

.card-content-area {
    flex: 1;
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    overflow-y: auto;
}

/* Cards xếp sát lề trong layout-card-menu */
body.layout-card-menu .card-content-area {
    padding: var(--spacing-sm);
}
body.layout-card-menu .card-content-inner {
    max-width: none;
    padding: 0 var(--spacing-sm);
    overflow: visible;
}
body.layout-card-menu .all-cards-grid,
body.layout-card-menu .apps-grid,
body.layout-card-menu .articles-grid {
    gap: var(--spacing-md);
}

.card-section { display: none; }

.card-section.active { display: block; }

.card-content-inner { max-width: 1400px; margin: 0 auto; }

/* Card style: icon trái, title, category uppercase, mô tả snippet, stats, View Details */
.layout-card-menu .app-card-public,
.layout-card-menu .article-card-public {
    display: flex;
    flex-direction: column;
}
/* Viền đỏ đủ 4 cạnh khi hover (không dùng translateY để tránh bị cắt bởi overflow) */
.layout-card-menu .app-card-public:hover,
.layout-card-menu .article-card-public:hover {
    border: 2px solid #c00;
    border-top: 2px solid #c00;
    box-shadow: var(--shadow-lg);
}

/* Layout-card-menu: tất cả dồn về bên trái, chữ trong card căn trái triệt để */
body.layout-card-menu,
body.layout-card-menu .card-content-area,
body.layout-card-menu .card-content-inner {
    text-align: left;
}
.layout-card-menu .app-card-public,
.layout-card-menu .app-card-public *,
.layout-card-menu .article-card-public,
.layout-card-menu .article-card-public *,
.layout-card-menu .article-content-public,
.layout-card-menu .article-title-public,
.layout-card-menu .article-excerpt-public,
.layout-card-menu .article-meta-public,
.layout-card-menu .app-description-public,
.layout-card-menu .app-detail-description,
.layout-card-menu .empty-state {
    text-align: left !important;
}

.layout-card-menu .app-card-header-public {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    max-width: 100%;
    min-width: 0;
}
.layout-card-menu .app-card-public .app-info-public {
    min-width: 0;
    flex: 1;
}

.layout-card-menu .app-category-public { text-transform: uppercase; font-size: 0.7rem; color: var(--text-secondary); }

.layout-card-menu .app-card-public .app-description-public {
    -webkit-line-clamp: 4;
    line-clamp: 4;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.layout-card-menu .app-footer-public {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.layout-card-menu .btn-view {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.layout-card-menu .btn-view:hover { border-color: var(--primary); color: var(--primary); }

@media (max-width: 768px) {
    .main-with-menu { flex-direction: column; }
    /* Thuật toán menu như URL: sidebar ẩn bên trái, khi .active thì trượt vào */
    .layout-card-menu .card-menu-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        max-width: 85vw;
        height: 100vh;
        min-width: 0;
        z-index: 1001;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: 4px 0 20px rgba(0,0,0,0.2);
    }
    .layout-card-menu .card-menu-sidebar.active {
        transform: translateX(0);
    }
    .layout-card-menu .card-content-area {
        width: 100%;
    }
}