:root{
  --bg:#0b0c10;
  --text:#e8ecf2;
  --muted:#9aa3b2;
  --border:#222;
  --card:#2a2f3c;
  --link:#fff;
  --btn-bg:#4da3ff;
  --btn-text:#0b0c10;
}

html[data-theme="light"]{
  --bg:#f8f9fb;
  --text:#1c1f23;
  --muted:#555;
  --border:#ccc;
  --card:#ffffff;
  --link:#000;
  --btn-bg:#0b63d1;
  --btn-text:#ffffff;
}

p a, .hero a, .site-footer a {
  color: var(--link);
  text-decoration: none;
  transition: color .2s, opacity .2s;
  font-weight: 600;
}

*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;transition:background .2s,color .2s}
a{color:var(--link);text-decoration:none;transition:color .2s,opacity .2s}
a:hover{text-decoration:none;opacity:.85}
.wrap{max-width:1000px;margin:0 auto;padding:0 24px}

.site-title{padding:40px 0 30px;border-bottom:1px solid var(--border);margin-bottom:30px}
.title-row{display:flex;align-items:center;justify-content:center;gap:16px}
.site-title h1{margin:0;font-size:52px;font-weight:800;letter-spacing:-.02em;color:var(--text);text-align:center}
#theme-toggle{background:none;border:1px solid rgba(255,255,255,.25);border-color:var(--border);border-radius:8px;padding:6px 10px;color:var(--text);cursor:pointer;font-size:18px;transition:transform .1s,filter .2s,background .2s,border-color .2s}
#theme-toggle:hover{filter:brightness(1.05);transform:scale(1.05)}
.site-main{padding:20px 0 40px}

.hero{text-align:left;margin-bottom:40px}
.hero h2{font-size:26px;margin:0 0 10px}
.hero p{color:var(--muted);font-size:16px;line-height:1.7;max-width:none;margin:0}

.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:15px;margin-top:20px}
.cat-card{background:var(--card);padding:14px;border-radius:12px;text-align:center;transition:.2s;border:1px solid rgba(0,0,0,.12)}
.cat-card:hover{transform:translateY(-2px);filter:brightness(1.1)}
html[data-theme="light"] .cat-card:hover{filter:brightness(0.9)}

.feed{background:var(--card);padding:18px;margin-bottom:14px;border-radius:12px;border:1px solid rgba(0,0,0,.12)}
.feed h3{margin:0 0 8px;font-size:18px}
.feed code{background:rgba(0,0,0,.2);padding:4px 6px;border-radius:6px;color:var(--text)}
.copy-btn{margin-left:6px;background:var(--btn-bg);color:var(--btn-text);border:0;padding:5px 10px;border-radius:6px;cursor:pointer;font-weight:600}
.copy-btn:hover{filter:brightness(1.08)}
.site-footer{text-align:center;padding:25px 0;border-top:1px solid var(--border);color:var(--muted);margin-top:40px}
.breadcrumbs{margin-bottom:20px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.breadcrumbs a{color:var(--muted);font-weight:500}
.breadcrumbs a:hover{color:var(--text)}

@media (max-width:768px){
  .wrap{max-width:100%;padding:0 18px}
  .site-title h1{font-size:38px}
  #theme-toggle{font-size:16px}
  .hero h2{font-size:24px}
  .hero p{font-size:16px}
}

.bottom-nav{margin-top:35px;text-align:center;display:flex;justify-content:center;gap:25px;flex-wrap:wrap;font-weight:500}
.bottom-nav a{color:var(--link);text-decoration:none}
.bottom-nav a:hover{text-decoration:none;opacity:.85}

.logo-link{color:inherit;text-decoration:none}
.logo-link:hover{text-decoration:none;opacity:.9}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-container video, .video-container iframe, .video-container object, .video-container embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.cat-search-bar {
  margin: 20px 0;
  text-align: center;
}

.cat-search-bar input {
  width: 100%;
  padding: 10px 14px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  outline: none;
  transition: border .2s, background .2s;
}

.cat-search-bar input:focus {
  border-color: var(--btn-bg);
}