*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#0d0d0d;color:#e0e0e0;min-height:100vh}
.back{display:inline-block;color:#888;text-decoration:none;font-size:0.9rem;padding:1.5rem 0 0 1.5rem;transition:color .2s}
.back:hover{color:#fff}
header{padding:1.5rem 1.5rem 0}
header h1{font-size:1.8rem;font-weight:600;margin-top:.5rem}
header p{color:#999;margin-top:.4rem;max-width:600px;line-height:1.5}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1rem;padding:1.5rem;max-width:1280px;margin:0 auto}
.card{background:#1a1a1a;border-radius:12px;overflow:hidden;cursor:pointer;transition:transform .25s,box-shadow .3s;position:relative}
.card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,.5)}
.card canvas{display:block;width:100%;aspect-ratio:16/9;background:#111}
.card-body{padding:1rem 1rem .9rem}
.card-body h3{font-size:1rem;font-weight:500;margin-bottom:.3rem}
.card-body p{font-size:.8rem;color:#888;line-height:1.4}
.card .tag{display:inline-block;font-size:.65rem;background:#2a2a2a;color:#aaa;padding:2px 8px;border-radius:4px;margin-top:6px;letter-spacing:.3px}
.card-code{display:none;border-top:1px solid #222}
.card-code.open{display:block}
.card-code .code-toggle,.overlay-code .code-toggle{display:block;width:100%;background:none;border:none;color:#888;cursor:pointer;font-size:.75rem;padding:8px 12px;text-align:left;letter-spacing:.5px;transition:color .2s}
.card-code .code-toggle:hover,.overlay-code .code-toggle:hover{color:#fff}
.card-code pre,.overlay-code pre{margin:0;padding:8px 12px 12px;background:#0a0a0a;overflow-x:auto;font-size:.72rem;line-height:1.5;color:#8bc34a;tab-size:2}
.card-code code,.overlay-code code{font-family:'Cascadia Code','Fira Code','JetBrains Mono',monospace}
.overlay-body{flex:1;display:flex;flex-direction:column;overflow:hidden}
.overlay-body canvas{flex:1;display:block;width:100%;min-height:0}
.overlay-code{flex-shrink:0;display:none;background:#111;border-top:1px solid #222;overflow-y:auto;max-height:40vh}
.overlay-code.open{display:block}
.overlay{position:fixed;inset:0;z-index:1000;display:none;background:#000}
.overlay.open{display:flex;flex-direction:column}
.overlay-header{display:flex;align-items:center;gap:1rem;padding:.8rem 1.2rem;background:#111;border-bottom:1px solid #222;flex-shrink:0}
.overlay-header h2{font-size:1.1rem;font-weight:500;flex:1}
.overlay-header button{background:none;border:none;color:#888;cursor:pointer;font-size:1rem;padding:4px 10px;border-radius:6px;transition:all .2s}
.overlay-header button:hover{color:#fff;background:#222}
.overlay-header .btn-pause{color:#ff9800}
.overlay-header .btn-restart{color:#4caf50}
.overlay-header .btn-close{color:#f44336;font-size:1.3rem;padding:4px 8px}
@media(max-width:600px){
  header{padding:1rem 1rem 0}
  .gallery{padding:.8rem;gap:.7rem;grid-template-columns:1fr}
  header h1{font-size:1.4rem}
}

/* ── Showcase view ── */
.showcase .back{font-size:.85rem;padding:1rem 0 0 1.5rem}
.showcase .canvas-wrap{position:relative;width:100%;height:80vh;overflow:hidden;background:#000}
.showcase .canvas-wrap canvas{display:block;width:100%;height:100%}
.showcase .content{padding:2rem 1.5rem 4rem;max-width:720px;margin:0 auto}
.showcase .content h2{font-size:1.3rem;font-weight:600;margin-bottom:.4rem}
.showcase .content .tag{display:inline-block;font-size:.7rem;background:#2a2a2a;color:#aaa;padding:2px 8px;border-radius:4px;letter-spacing:.3px;margin-bottom:1rem}
.showcase .content .explanation{color:#999;font-size:.95rem;line-height:1.6;margin-bottom:1.5rem;padding:1rem;background:#151515;border-radius:8px}
.showcase .content .explanation strong{color:#ccc}
.showcase .content pre{background:#111;padding:1rem 1.2rem;border-radius:8px;overflow-x:auto;font-size:.95rem;line-height:1.6;tab-size:2}
.showcase .content code{font-family:'Cascadia Code','Fira Code','JetBrains Mono',monospace;color:#e0d4b0}
@media(max-width:600px){
  .showcase .canvas-wrap{height:60vh}
  .showcase .content{padding:1.2rem 1rem 3rem}
}