:root {
  --bg: #ffffff;
  --fg: #0b0b0b;
  --muted: #666;
  --accent: #0b3d91;
  --card: #f6f6f6;
}
[data-theme="dark"] {
  --bg: #0c0c0c;
  --fg: #f2f2f2;
  --muted: #aaa;
  --accent: #4c8bf5;
  --card: #151515;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial; background: var(--bg); color: var(--fg); }
.app-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid #ddd; }
.app-nav { display: grid; grid-auto-flow: column; gap: 8px; overflow-x: auto; }
.app-nav button { padding: 8px 12px; border: 1px solid #ddd; background: #fff; color: #333; border-radius: 6px; cursor: pointer; }
.app-nav button:hover { border-color: var(--accent); }
#app-root { max-width: 1100px; margin: 0 auto; padding: 16px; }
section h2 { margin: 12px 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.card { background: var(--card); border-radius: 10px; overflow: hidden; border: 1px solid #ddd; display: flex; flex-direction: column; }
.card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.card .content { padding: 10px; }
.meta { font-size: 12px; color: var(--muted); display: flex; gap: 8px; }
.feed-controls, .region-controls, .settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; margin: 8px 0 16px; }
.toggle { display: inline-flex; align-items: center; gap: 8px; }
.live-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; }
.panel { border: 1px solid #ddd; border-radius: 10px; padding: 12px; background: var(--card); }
.app-footer { padding: 12px 16px; border-top: 1px solid #ddd; }
input, select, textarea, button { font: inherit; padding: 8px; }
button { cursor: pointer; }
textarea { min-height: 80px; }
.install-btn { padding: 8px 12px; border: none; background: var(--accent); color: #fff; border-radius: 6px; }