:root {
  --bg: #0e1118;
  --surface: #161a24;
  --surface-2: #1c212d;
  --surface-3: #232936;
  --line: #2a3140;
  --text: #e7ebf3;
  --muted: #98a2b8;
  --text-faint: #6b7488;
  --accent: #ffd700;
  --accent-on: #1a1308;
  --accent-soft: rgba(255,215,0,0.12);
  --blue: #4f8bff;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: Inter, -apple-system, system-ui, sans-serif; font-size: 13px; height: 100vh; overflow: hidden; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
.app { display: grid; grid-template-rows: 56px 1fr; height: 100vh; }
.topbar { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 16px; padding: 0 16px; background: var(--surface); border-bottom: 1px solid var(--line); }
.topbar-left { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.brand-link { color: var(--text); font-size: 14px; font-weight: 600; text-decoration: none; }
.brand-link:hover { color: var(--accent); }
.brand-suffix { color: var(--text-faint); font-size: 13px; }
.topbar-center { display: flex; justify-content: center; }
.topbar-right { display: inline-flex; align-items: center; gap: 8px; }
.refresh-info { font-size: 11px; color: var(--text-faint); padding-right: 4px; }
.btn-primary { background: var(--accent); color: var(--accent-on); font-weight: 600; padding: 7px 12px; border-radius: 7px; font-size: 12px; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-secondary { background: var(--surface-2); border: 1px solid var(--line); color: var(--muted); padding: 6px 10px; border-radius: 6px; font-size: 14px; }
.btn-secondary:hover { background: var(--surface-3); border-color: var(--accent); color: var(--text); }
.btn-secondary.active { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.screen-container { background: var(--line); overflow: hidden; display: grid; gap: 1px; }
.screen-container.grid-1 { grid-template-columns: 1fr; grid-template-rows: 1fr; }
.screen-container.grid-2 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr; }
.screen-container.grid-3, .screen-container.grid-4 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; }
.screen-container.grid-5, .screen-container.grid-6 { grid-template-columns: repeat(3, 1fr); grid-template-rows: 1fr 1fr; }
.screen-empty { background: var(--bg); display: grid; place-items: center; color: var(--text-faint); font-size: 11px; opacity: 0.4; }
.screen-pane { position: relative; background: #000; display: grid; grid-template-rows: 1fr auto; overflow: hidden; }
.screen-frame-wrap { position: relative; background: #000; overflow: hidden; min-height: 0; min-width: 0; }
.screen-frame { position: absolute; border: 0; transform-origin: 0 0; display: block; background: #fff; }
.screen-fallback { background: var(--surface-2); border-top: 1px solid var(--line); padding: 6px 12px; font-size: 11px; color: var(--text-faint); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.screen-fallback a { color: var(--accent); text-decoration: none; padding: 3px 10px; background: var(--accent-soft); border: 1px solid rgba(255,215,0,0.3); border-radius: 5px; font-weight: 500; }
.screen-fallback a:hover { background: var(--accent); color: var(--accent-on); }