:root {
  --bg: #0d0d0d;
  --card: #161616;
  --border: #2a2a2a;
  --accent: #ffd700;
  --accent-dim: #b89600;
  --text: #f0f0f0;
  --muted: #888;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.6);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; line-height: 1.5; }
.app { max-width: 1100px; margin: 0 auto; padding: 24px 16px; }
header { text-align: center; margin-bottom: 32px; }
header h1 { font-size: 2rem; background: linear-gradient(135deg, #ffd700, #fff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.subtitle { color: var(--muted); margin-top: 4px; }

/* Upload Panel */
.upload-panel { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 24px; box-shadow: var(--shadow); }
.upload-panel h2 { margin-bottom: 16px; color: var(--accent); }
.field { margin-bottom: 16px; }
.field label { display: block; margin-bottom: 6px; font-weight: 600; }
.field input { width: 100%; padding: 12px 14px; border-radius: 8px; border: 1px solid var(--border); background: #0f0f0f; color: var(--text); font-size: 1rem; }
.field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(255,215,0,0.2); }
.field small { display: block; margin-top: 4px; color: var(--muted); font-size: 0.85rem; }
.btn-primary { width: 100%; padding: 14px; border: none; border-radius: 8px; background: linear-gradient(135deg, var(--accent), var(--accent-dim)); color: #000; font-weight: 700; font-size: 1rem; cursor: pointer; transition: transform .15s, box-shadow .15s; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,215,0,0.3); }
.btn-primary:active { transform: translateY(0); }
.msg { margin-top: 10px; text-align: center; font-weight: 600; min-height: 1.2em; }
.msg.success { color: #4ade80; }
.msg.error { color: #f87171; }

/* Categories */
.categories { margin-bottom: 24px; }
.categories h2 { margin-bottom: 12px; color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 8px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); color: var(--text); font-size: 0.85rem; cursor: pointer; transition: all .15s; white-space: nowrap; }
.chip:hover, .chip.active { border-color: var(--accent); background: rgba(255,215,0,0.1); color: var(--accent); }
.chip .count { margin-left: 6px; opacity: 0.7; font-size: 0.75rem; }

/* Gallery */
.gallery h2 { margin-bottom: 16px; color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.5); }
.card img { width: 100%; height: 200px; object-fit: cover; display: block; }
.card-info { padding: 12px 14px; }
.card-names { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.tag { padding: 2px 8px; border-radius: 999px; background: rgba(255,215,0,0.15); color: var(--accent); font-size: 0.7rem; font-weight: 600; }
.card-meta { font-size: 0.75rem; color: var(--muted); }

/* Lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,0.95); display: flex; align-items: center; justify-content: center; z-index: 1000; opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s; padding: 20px; }
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img { max-width: 90vw; max-height: 85vh; object-fit: contain; border-radius: 8px; box-shadow: 0 0 40px rgba(255,215,0,0.2); }
.lb-close { position: fixed; top: 24px; right: 24px; width: 44px; height: 44px; border-radius: 50%; background: var(--card); border: 1px solid var(--border); color: var(--text); font-size: 1.5rem; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background .15s; }
.lb-close:hover { background: var(--accent); color: #000; }
.lb-info { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); color: var(--muted); font-size: 0.85rem; text-align: center; max-width: 90vw; }

/* Responsive */
@media (max-width: 600px) {
  header h1 { font-size: 1.5rem; }
  .card img { height: 160px; }
}