:root {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f8fafc;
    --bg-card: #ffffff;
    --bg-input: #f8fafc;
    
    --text-primary: #1a1a2e;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --accent-primary: #2563eb;
    --accent-primary-light: #3b82f6;
    --accent-primary-dark: #1d4ed8;
    
    --accent-success: #16a34a;
    --accent-success-light: #22c55e;
    
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.04);
    --shadow-md: 0 6px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-card: 0 2px 10px rgba(0,0,0,0.04);
    --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.08);
    
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 24px;
    
    --header-bg: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    --header-text: #ffffff;
    --header-subtitle: #94a3b8;
    --header-border: rgba(255,255,255,0.06);
    
    --nav-link: #94a3b8;
    --nav-link-hover: #ffffff;
    --nav-active-bg: linear-gradient(135deg, rgba(102,126,234,0.2) 0%, rgba(118,75,162,0.2) 100%);
    --nav-active-border: rgba(102,126,234,0.3);
    
    --entry-card-border: transparent;
    --entry-card-hover-y: -8px;
    --entry-card-hover-shadow: 0 16px 40px rgba(0,0,0,0.12);
    
    --tag-B4A-bg: #2ad0ca;
    --tag-B4A-text: #fff;
    --tag-B4I-bg: #c0c0c0;
    --tag-B4I-text: #fff;
    --tag-B4J-bg: #db339c;
    --tag-B4J-text: #fff;
    --tag-B4R-bg: #0008e3;
    --tag-B4R-text: #fff;
    
    --filter-btn-bg: #ffffff;
    --filter-btn-border: #e2e8f0;
    --filter-btn-text: #64748b;
    --filter-btn-hover-bg: #f1f5f9;
    --filter-btn-hover-border: #cbd5e1;
    
    --pagination-btn-bg: #ffffff;
    --pagination-btn-border: #e2e8f0;
    --pagination-btn-text: #64748b;
    --pagination-btn-hover-bg: #f1f5f9;
    
    --footer-bg: #ffffff;
    --footer-border: #e2e8f0;
    --footer-text: #94a3b8;
    
    --filter-bg: #f1f5f9;
    
    --official-gradient: linear-gradient(90deg, #2563eb, #3b82f6);
    --community-gradient: linear-gradient(90deg, #16a34a, #22c55e);
    
    --title-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --bg-input: #334155;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    
    --border-color: #475569;
    --border-light: #334155;
    
    --accent-primary: #60a5fa;
    --accent-primary-light: #93c5fd;
    --accent-primary-dark: #3b82f6;
    
    --accent-success: #4ade80;
    --accent-success-light: #86efac;
    
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.15);
    --shadow-md: 0 6px 20px rgba(0,0,0,0.2);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.25);
    --shadow-card: 0 2px 10px rgba(0,0,0,0.15);
    --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.2);
    
    --filter-btn-bg: #1e293b;
    --filter-btn-border: #475569;
    --filter-btn-text: #94a3b8;
    --filter-btn-hover-bg: #334155;
    --filter-btn-hover-border: #64748b;
    
    --pagination-btn-bg: #1e293b;
    --pagination-btn-border: #475569;
    --pagination-btn-text: #94a3b8;
    --pagination-btn-hover-bg: #334155;
    
    --footer-bg: #1e293b;
    --footer-border: #334155;
    --footer-text: #64748b;
    
    --filter-bg: #334155;
}

[data-theme="b4x"] {
    --bg-primary: #0d1b2a;
    --bg-secondary: #1b263b;
    --bg-tertiary: #0b1423;
    --bg-card: #1b263b;
    --bg-input: #0b1423;
    
    --text-primary: #e0e1dd;
    --text-secondary: #a8a8a8;
    --text-tertiary: #707070;
    
    --border-color: #0b1423;
    --border-light: #0b1423;
    
    --accent-primary: #2ad0ca;
    --accent-primary-light: #4de6df;
    --accent-primary-dark: #1ca8a2;
    
    --accent-success: #db339c;
    --accent-success-light: #e863b6;
    
    --shadow-sm: 0 2px 10px rgba(42,208,202,0.1);
    --shadow-md: 0 6px 20px rgba(42,208,202,0.15);
    --shadow-lg: 0 8px 24px rgba(42,208,202,0.2);
    --shadow-card: 0 2px 10px rgba(42,208,202,0.1);
    --shadow-card-hover: 0 8px 24px rgba(42,208,202,0.15);
    
    --header-bg: linear-gradient(135deg, #0d1b2a 0%, #1b263b 50%, #0b1423 100%);
    --header-text: #e0e1dd;
    --header-subtitle: #a8a8a8;
    --header-border: rgba(42,208,202,0.1);
    
    --nav-link: #a8a8a8;
    --nav-link-hover: #2ad0ca;
    --nav-active-bg: rgba(42,208,202,0.1);
    --nav-active-border: rgba(42,208,202,0.3);
    
    --entry-card-border: rgba(42,208,202,0.15);
    --entry-card-hover-y: -8px;
    --entry-card-hover-shadow: 0 16px 40px rgba(42,208,202,0.15);
    
    --filter-btn-bg: #1b263b;
    --filter-btn-border: #0b1423;
    --filter-btn-text: #a8a8a8;
    --filter-btn-hover-bg: #0b1423;
    --filter-btn-hover-border: rgba(42,208,202,0.2);
    
    --pagination-btn-bg: #1b263b;
    --pagination-btn-border: #0b1423;
    --pagination-btn-text: #a8a8a8;
    --pagination-btn-hover-bg: #0b1423;
    
    --footer-bg: #1b263b;
    --footer-border: #0b1423;
    --footer-text: #707070;
    
    --filter-bg: #0b1423;
    
    --official-gradient: linear-gradient(90deg, #2ad0ca, #4de6df);
    --community-gradient: linear-gradient(90deg, #db339c, #e863b6);
    
    --title-gradient: linear-gradient(135deg, #2ad0ca 0%, #db339c 100%);
}

* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif; background:var(--bg-primary); color:var(--text-primary); line-height:1.6; transition:background .3s,color .3s; }
a { color:var(--accent-primary); text-decoration:none; }
a:hover { text-decoration:underline; }

.site-header { background:var(--header-bg); color:var(--header-text); padding:16px 24px; }
.site-header .header-content { max-width:1000px; margin:0 auto; display:flex; align-items:center; justify-content:space-between; gap:20px; }
.site-header .logo { flex-shrink:0; display:block; transition:opacity .25s; }
.site-header .logo:hover { opacity:0.8; }
.site-header .header-center { flex:1; text-align:center; min-width:0; }
.site-header h1 { font-size:28px; font-weight:800; letter-spacing:-1px; margin:0 0 4px; color:#ffffff; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.site-header .subtitle { color:var(--header-subtitle); font-size:13px; font-weight:400; opacity:0.9; margin:0; }

.header-right { display:flex; align-items:center; gap:16px; }
.github-link { color:var(--header-subtitle); transition:all .25s; display:flex; align-items:center; justify-content:center; width:36px; height:36px; border-radius:var(--radius-sm); background:rgba(255,255,255,0.05); }
.github-link:hover { color:var(--header-text); background:rgba(255,255,255,0.12); transform:scale(1.05); }

.lang-selector { position:relative; }
.lang-selector select { padding:8px 36px 8px 14px; border:1px solid rgba(255,255,255,0.15); border-radius:var(--radius-sm); background:rgba(255,255,255,0.08); color:var(--header-text); font-size:13px; font-weight:500; cursor:pointer; outline:none; appearance:none; min-width:90px; transition:all .25s; }
.lang-selector select:hover { background:rgba(255,255,255,0.14); border-color:rgba(255,255,255,0.25); }
.lang-selector select:focus { background:rgba(255,255,255,0.12); border-color:#667eea; box-shadow:0 0 0 3px rgba(102,126,234,0.2); }
.lang-selector select option { background:#1a1a2e; color:#fff; padding:8px 12px; }
.lang-selector::after { content:'▼'; position:absolute; right:12px; top:50%; transform:translateY(-50%); color:var(--header-subtitle); font-size:10px; pointer-events:none; }

.main-nav { display:flex; justify-content:center; gap:24px; }
.main-nav a { color:var(--nav-link); font-size:14px; font-weight:500; padding:8px 16px; border-radius:8px; transition:all .25s; display:flex; align-items:center; gap:6px; }
.main-nav a:hover { color:var(--nav-link-hover); background:rgba(255,255,255,0.08); text-decoration:none; }
.main-nav a.active { color:var(--nav-link-hover); background:var(--nav-active-bg); border:1px solid var(--nav-active-border); }

.container { max-width:1000px; margin:0 auto; padding:28px 24px; }

.entry-section { margin-bottom:36px; }
.entry-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:28px; }
.entry-card { display:flex; flex-direction:column; align-items:center; justify-content:center; background:var(--bg-card); border-radius:var(--radius-xl); padding:36px 28px; text-align:center; box-shadow:var(--shadow-md); transition:transform .3s,box-shadow .3s; color:var(--text-primary); border:2px solid var(--entry-card-border); min-height:240px; position:relative; overflow:hidden; }
.entry-card::before { content:''; position:absolute; top:0; left:0; right:0; height:4px; }
.entry-card.official::before { background:var(--official-gradient); }
.entry-card.community::before { background:var(--community-gradient); }
.entry-card:hover { transform:translateY(var(--entry-card-hover-y)); box-shadow:var(--entry-card-hover-shadow); text-decoration:none; }
.entry-card.official { border-color:rgba(37,99,235,0.15); }
[data-theme="b4x"] .entry-card.official { border-color:rgba(42,208,202,0.2); }
.entry-card.community { border-color:rgba(22,163,74,0.15); }
[data-theme="b4x"] .entry-card.community { border-color:rgba(219,51,156,0.2); }
.entry-number { font-size:64px; font-weight:900; line-height:1; margin-bottom:14px; }
.entry-card.official .entry-number { color:var(--accent-primary); }
.entry-card.community .entry-number { color:var(--accent-success); }
.entry-card h3 { font-size:22px; font-weight:700; margin-bottom:10px; }
.entry-card p { color:var(--text-secondary); font-size:14px; margin-bottom:20px; line-height:1.6; }
.entry-link { font-size:14px; font-weight:600; color:var(--accent-primary); transition:all .25s; display:flex; align-items:center; gap:4px; }
.entry-card:hover .entry-link { color:var(--accent-primary-dark); transform:translateX(4px); }

.ranking-section { background:var(--bg-card); border-radius:var(--radius-xl); padding:32px; margin-bottom:36px; box-shadow:var(--shadow-md); }
.ranking-header { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:14px; margin-bottom:24px; }
.ranking-header h2 { font-size:22px; font-weight:700; color:var(--text-primary); }
.ranking-stats { display:flex; align-items:center; gap:24px; }
.ranking-stat { display:flex; align-items:center; gap:8px; font-size:14px; color:var(--text-secondary); }
.stat-icon { font-size:18px; }
.ranking-stat span:last-child { font-weight:700; color:var(--text-primary); font-size:15px; }
.ranking-list { display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:12px 18px; }
.ranking-item { display:flex; align-items:center; gap:12px; padding:12px 16px; border-radius:var(--radius-md); background:var(--bg-tertiary); font-size:14px; transition:all .25s; }
.ranking-item:hover { background:var(--border-light); transform:translateX(4px); }
.ranking-item .rank { font-weight:800; min-width:36px; color:var(--text-secondary); font-size:16px; }
.ranking-item .author { flex:1; font-weight:600; }
.ranking-item a.author { color:var(--accent-primary); text-decoration:none; }
.ranking-item a.author:hover { text-decoration:underline; }
.ranking-item .count { color:var(--text-tertiary); font-size:13px; font-weight:500; }
.ranking-list > :nth-child(1) { color:#fff; background:#f6740c; }
.ranking-list > :nth-child(2) { color:#fff; background:#1b8bff; }
.ranking-list > :nth-child(3) { color:#fff; background:#2ad0ca; }
.ranking-list > :nth-child(1) .rank,
.ranking-list > :nth-child(2) .rank,
.ranking-list > :nth-child(3) .rank { color:#fff; font-size:20px; }
.ranking-list > :nth-child(1) .author,
.ranking-list > :nth-child(2) .author,
.ranking-list > :nth-child(3) .author { color:#fff; }
.ranking-list > :nth-child(1) a.author,
.ranking-list > :nth-child(2) a.author,
.ranking-list > :nth-child(3) a.author { color:#fff; }
.ranking-list > :nth-child(1) .count,
.ranking-list > :nth-child(2) .count,
.ranking-list > :nth-child(3) .count { color:rgba(255,255,255,0.85); }

.sticky-filter { position:sticky; top:0; z-index:100; background:var(--filter-bg); border-radius:var(--radius-lg); padding:20px 24px; margin-bottom:24px; box-shadow:var(--shadow-lg); border:1px solid var(--border-color); }
.filter-bar { display:flex; flex-wrap:wrap; align-items:center; gap:14px; }
.filter-bar input[type="text"] { flex:1; min-width:220px; padding:12px 20px; border:1.5px solid var(--border-color); border-radius:var(--radius-md); font-size:14px; outline:none; transition:all .25s; background:var(--bg-input); color:var(--text-primary); }
.filter-bar input[type="text"]:focus { border-color:var(--accent-primary); background:var(--bg-card); box-shadow:0 0 0 3px rgba(59,130,246,0.1); }
.filter-bar input[type="text"]::placeholder { color:var(--text-tertiary); }
.filter-tags { display:flex; flex-wrap:wrap; gap:10px; }
.filter-btn { padding:8px 18px; border:1.5px solid var(--filter-btn-border); border-radius:var(--radius-full); background:var(--filter-btn-bg); font-size:13px; font-weight:600; cursor:pointer; transition:all .25s; color:var(--filter-btn-text); }
.filter-btn:hover { background:var(--filter-btn-hover-bg); border-color:var(--filter-btn-hover-border); }
.filter-btn.active { background:var(--accent-primary); color:#fff; border-color:var(--accent-primary); box-shadow:0 4px 14px rgba(37,99,235,0.35); }

.library-list { display:flex; flex-direction:column; gap:16px; }
.library-card { background:var(--bg-card); border-radius:var(--radius-lg); padding:20px 24px; box-shadow:var(--shadow-card); transition:box-shadow .25s; }
.library-card:hover { box-shadow:var(--shadow-card-hover); }
.card-header { display:flex; flex-wrap:wrap; align-items:center; gap:10px 16px; margin-bottom:10px; }
.card-title { font-size:18px; font-weight:700; margin:0; }
.card-title a { color:var(--text-primary); }
.card-title a:hover { color:var(--accent-primary); text-decoration:underline; }
.card-tags { display:flex; flex-wrap:wrap; gap:6px; }
.tag { display:inline-block; padding:3px 12px; border-radius:16px; font-size:11px; font-weight:700; }
.tag-B4A { background:var(--tag-B4A-bg); color:var(--tag-B4A-text); }
.tag-B4I { background:var(--tag-B4I-bg); color:var(--tag-B4I-text); }
.tag-B4J { background:var(--tag-B4J-bg); color:var(--tag-B4J-text); }
.tag-B4R { background:var(--tag-B4R-bg); color:var(--tag-B4R-text); }
.card-desc { font-size:14px; color:var(--text-secondary); margin:8px 0 12px; padding-left:16px; border-left:3px solid var(--border-color); line-height:1.6; }
.card-footer { font-size:13px; color:var(--text-tertiary); display:flex; flex-wrap:wrap; gap:8px 20px; }
.card-footer .card-author { color:var(--accent-primary); }
.card-author-link { color:var(--accent-primary); text-decoration:none; font-weight:600; }
.card-author-link:hover { text-decoration:underline; }

.site-footer { text-align:center; padding:28px 24px; color:var(--footer-text); font-size:14px; border-top:1px solid var(--footer-border); margin-top:28px; background:var(--footer-bg); }
.site-footer a { color:var(--accent-primary); font-weight:500; }

.loading { text-align:center; padding:48px; color:var(--text-tertiary); }
.empty, .error { text-align:center; padding:56px; font-size:16px; }
.error { color:#dc2626; }

.pagination-container { margin-top:32px; }
.pagination { display:flex; flex-wrap:wrap; align-items:center; justify-content:center; gap:10px; }
.page-btn { min-width:44px; height:44px; padding:0 14px; border:1.5px solid var(--pagination-btn-border); border-radius:var(--radius-md); background:var(--pagination-btn-bg); font-size:14px; font-weight:600; cursor:pointer; transition:all .25s; color:var(--pagination-btn-text); display:flex; align-items:center; justify-content:center; }
.page-btn:hover:not(.disabled) { background:var(--pagination-btn-hover-bg); border-color:var(--filter-btn-hover-border); }
.page-btn.active { background:var(--accent-primary); color:#fff; border-color:var(--accent-primary); box-shadow:0 4px 14px rgba(37,99,235,0.35); }
.page-btn.disabled { opacity:0.4; cursor:not-allowed; }
.page-ellipsis { padding:0 12px; color:var(--text-tertiary); font-size:14px; }
.page-info { margin-left:20px; padding-left:20px; border-left:1.5px solid var(--border-color); color:var(--text-tertiary); font-size:14px; }

.links-section { background:var(--bg-card); border-radius:var(--radius-xl); padding:32px; margin-bottom:28px; box-shadow:var(--shadow-md); }
.links-section h2 { font-size:22px; font-weight:700; margin-bottom:24px; color:var(--text-primary); }
.links-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:16px; }
.link-card { display:flex; align-items:center; gap:14px; padding:16px 20px; background:var(--bg-tertiary); border-radius:var(--radius-md); text-decoration:none; color:var(--text-secondary); transition:all .25s; border:1.5px solid transparent; }
.link-card:hover { background:var(--border-light); border-color:var(--border-color); color:var(--accent-primary); transform:translateY(-2px); }
.link-icon { font-size:22px; }
.link-text { font-size:14px; font-weight:600; }

@media (max-width:768px) {
    .site-header { padding:12px 16px; }
    .site-header .header-content { flex-wrap:wrap; gap:10px; }
    .site-header .logo { order:1; }
    .site-header .logo img { height:30px; }
    .site-header .header-right { order:2; gap:10px; }
    .site-header .header-center { order:3; flex:1 1 100%; }
    .site-header h1 { font-size:26px; }
    .github-link { width:32px; height:32px; }
    .github-link svg { width:20px; height:20px; }
    .lang-selector select { padding:6px 30px 6px 12px; font-size:12px; min-width:80px; }
    .entry-grid { grid-template-columns:1fr; }
    .entry-card { padding:32px 24px; min-height:220px; }
    .entry-number { font-size:52px; }
    .ranking-header { flex-direction:column; align-items:flex-start; }
    .ranking-stats { width:100%; justify-content:space-between; }
    .ranking-list { grid-template-columns:1fr 1fr; }
    .filter-bar { flex-direction:column; align-items:stretch; gap:10px; }
    .filter-tags { justify-content:space-between; gap:6px; }
    .filter-tags .filter-btn { flex:1; text-align:center; }
    .sticky-filter { padding:14px 16px; }
}

@media (max-width:480px) {
    .site-header { padding:10px 14px 8px; }
    .site-header h1 { font-size:20px; }
    .site-header .subtitle { font-size:12px; }
    .container { padding:20px 14px; }
    .entry-card { padding:28px 20px; }
    .entry-number { font-size:44px; }
    .ranking-list { grid-template-columns:1fr; }
    .ranking-stats { gap:14px; }
    .main-nav { gap:12px; }
    .main-nav a { padding:6px 10px; font-size:13px; }
    .filter-btn { padding:6px 8px; font-size:12px; }
    .sticky-filter { padding:12px 12px; }
}

.back-to-top {
    position:fixed;
    bottom:32px;
    right:32px;
    width:52px;
    height:52px;
    border-radius:50%;
    background:var(--accent-primary);
    color:#fff;
    border:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:22px;
    box-shadow:0 6px 20px rgba(37,99,235,0.4);
    opacity:0;
    visibility:hidden;
    transition:all .3s ease;
    z-index:999;
}
.back-to-top:hover {
    background:var(--accent-primary-dark);
    transform:translateY(-4px);
    box-shadow:0 10px 28px rgba(37,99,235,0.5);
}
.back-to-top.show {
    opacity:1;
    visibility:visible;
}

.ranking-footer { text-align:center; margin-top:20px; }
.ranking-view-all { display:inline-flex; align-items:center; gap:6px; padding:10px 24px; border:1.5px solid var(--border-color); border-radius:var(--radius-full); background:var(--bg-secondary); color:var(--text-secondary); font-size:14px; font-weight:600; cursor:pointer; transition:all .25s; }
.ranking-view-all:hover { background:var(--accent-primary); color:#fff; border-color:var(--accent-primary); }

.modal-overlay { position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.5); backdrop-filter:blur(4px); display:flex; align-items:center; justify-content:center; z-index:1000; opacity:0; visibility:hidden; transition:all .3s; }
.modal-overlay.show { opacity:1; visibility:visible; }
.modal { background:var(--bg-card); border-radius:var(--radius-xl); width:90%; max-width:600px; max-height:80vh; display:flex; flex-direction:column; box-shadow:0 24px 64px rgba(0,0,0,0.2); transform:translateY(20px); transition:transform .3s; }
.modal-overlay.show .modal { transform:translateY(0); }
.modal-header { display:flex; align-items:center; justify-content:space-between; padding:20px 24px; border-bottom:1px solid var(--border-color); }
.modal-header h3 { font-size:18px; font-weight:700; color:var(--text-primary); }
.modal-close { width:36px; height:36px; border:none; background:var(--bg-tertiary); border-radius:50%; font-size:18px; cursor:pointer; color:var(--text-secondary); transition:all .25s; display:flex; align-items:center; justify-content:center; }
.modal-close:hover { background:var(--border-color); color:var(--text-primary); }
.modal-search { padding:16px 24px; border-bottom:1px solid var(--border-color); }
.modal-search input { width:100%; padding:10px 16px; border:1.5px solid var(--border-color); border-radius:var(--radius-md); font-size:14px; outline:none; background:var(--bg-input); color:var(--text-primary); transition:border-color .25s; }
.modal-search input:focus { border-color:var(--accent-primary); }
.modal-body { flex:1; overflow-y:auto; padding:16px 24px; }
.modal-info { font-size:13px; color:var(--text-tertiary); margin-bottom:16px; }
.modal-list { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:10px 16px; }
.modal-list .ranking-item { padding:10px 14px; }
.modal-list .ranking-item .rank { min-width:32px; font-size:14px; }
.modal-list .ranking-item .count { font-size:12px; }