:root { color-scheme: light dark; --text: #1d1d1f; --muted: #6e6e73; --bg: #f5f5f7; --panel: #ffffff; --line: #d2d2d7; --accent: #e5484d; --accent-text: #ffffff; }
@media (prefers-color-scheme: dark) { :root { --text: #f5f5f7; --muted: #a1a1a6; --bg: #000000; --panel: #1c1c1e; --line: #38383a; --accent: #ff6369; --accent-text: #000000; } }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { overflow-x: hidden; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif; }
a { color: inherit; }
button { font: inherit; color: inherit; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; cursor: pointer; }
button:disabled { opacity: 0.4; cursor: default; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
button.ghost { background: transparent; }
button.wide { width: 100%; margin-top: 12px; padding: 10px; }
input[type="text"] { font: inherit; color: inherit; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; min-width: 0; }

.bar { position: sticky; top: 0; z-index: 2; display: flex; gap: 12px; align-items: center; padding: 8px 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
.title { font-size: 17px; margin: 0; white-space: nowrap; }
.add-form { flex: 1; display: flex; gap: 8px; min-width: 0; }
.add-form input { flex: 1; }
.header-actions { display: flex; gap: 4px; margin-left: auto; }

.controls { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
.transport { display: flex; gap: 6px; }
.transport .primary { min-width: 56px; }
.seek { flex: 1; display: flex; gap: 8px; align-items: center; min-width: 240px; font-variant-numeric: tabular-nums; color: var(--muted); font-size: 13px; }
.seek input { flex: 1; }
.sync { display: flex; gap: 8px; align-items: center; font-size: 13px; }

.notice { margin: 12px 16px 0; padding: 10px 12px; border-radius: 8px; background: color-mix(in srgb, var(--accent) 15%, transparent); }
/* 動画の最小サイズ（200×200）を守るため、1枚の幅は356px以上にする */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(356px, 1fr)); gap: 16px; padding: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.player { position: relative; aspect-ratio: 16 / 9; background: #000; }
.player > div, .player > iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.player .message { display: flex; align-items: center; justify-content: center; padding: 16px; color: #ccc; text-align: center; font-size: 13px; }
.meta { padding: 8px 12px 0; }
.meta .video-title { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.meta .detail { color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.badge { display: inline-block; font-size: 11px; padding: 0 6px; border-radius: 999px; margin-right: 6px; background: color-mix(in srgb, var(--accent) 20%, transparent); }
.card-controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 8px 12px 12px; font-size: 13px; }
.card-controls .volume { flex: 1; min-width: 100px; }
.lag { display: flex; gap: 4px; align-items: center; }
.lag span { min-width: 4.5em; text-align: center; font-variant-numeric: tabular-nums; }
.card-controls .remove { margin-left: auto; }

.empty { max-width: 640px; margin: 48px auto; padding: 0 16px; text-align: center; color: var(--muted); }
.queue { padding: 0 16px 16px; }
.queue h2 { font-size: 14px; color: var(--muted); }
.queue-items { display: flex; flex-wrap: wrap; gap: 8px; }
.footer { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; padding: 32px 16px; font-size: 12px; color: var(--muted); }

.modal { max-width: 480px; width: calc(100% - 32px); border: 1px solid var(--line); border-radius: 14px; background: var(--panel); color: var(--text); padding: 20px 24px; }
.modal::backdrop { background: rgba(0, 0, 0, 0.5); }
.modal h2 { margin-top: 0; }
.modal h3 { font-size: 14px; margin-bottom: 4px; }
.small { font-size: 13px; color: var(--muted); }
@media (max-width: 600px) {
  .bar { flex-wrap: wrap; } .add-form { order: 3; flex-basis: 100%; }
  .controls { gap: 10px; } .transport { width: 100%; justify-content: space-between; } .seek { min-width: 0; flex-basis: 100%; }
  .grid { padding: 12px 0; } .card { border-radius: 0; border-left: 0; border-right: 0; }
}