:root {
  --bar: 36px;
  --gap: 4px;
  /* The largest 16:9 tile that fits two across and two down below the bar. */
  --tile-w: min(
    calc((100vw - 3 * var(--gap)) / 2),
    calc((100dvh - var(--bar) - 3 * var(--gap)) / 2 * 16 / 9)
  );
  --bg: #111317;
  --panel: #23262d;
  --text: #e6e6e6;
  --muted: #9aa0aa;
  --chip: #3a3f4b;
  --on: #e8a33d;
  --warn: #ff9b6b;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
}

a {
  color: var(--muted);
}

.bar {
  height: var(--bar);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  background: var(--panel);
  white-space: nowrap;
}

.bar h1 {
  margin: 0;
  font-size: 14px;
}

#groups {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.group[hidden] {
  display: none;
}

.group .heading {
  color: var(--muted);
  font-size: 11px;
}

.group .heading .mark {
  margin-left: 4px;
  color: var(--warn);
}

.pill,
.group button {
  border: 0;
  border-radius: 12px;
  padding: 2px 10px;
  background: var(--chip);
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

.group button[aria-pressed="true"] {
  background: var(--on);
  color: #000;
}

.group button.stale {
  opacity: 0.5;
}

#groups.full .group button[aria-pressed="false"] {
  opacity: 0.35;
  cursor: not-allowed;
}

.group .when {
  margin-left: 4px;
  font-size: 11px;
  opacity: 0.8;
}

.group .live {
  margin-left: 4px;
  font-size: 10px;
  font-weight: bold;
  color: #ff5a5a;
}

.group button[aria-pressed="true"] .live {
  color: #7a0000;
}

.notice {
  color: var(--on);
  overflow: hidden;
  text-overflow: ellipsis;
}

.updated {
  color: var(--muted);
  font-size: 11px;
}

.pill:disabled {
  opacity: 0.5;
  cursor: progress;
}

.links {
  color: var(--muted);
  font-size: 11px;
}

.links select {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--muted);
  border-radius: 4px;
}

#grid {
  display: grid;
  grid-template-columns: repeat(2, var(--tile-w));
  justify-content: center;
  gap: var(--gap);
  padding: var(--gap);
}

.tile {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
}

.tile iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.tile .label {
  position: absolute;
  left: 6px;
  top: 6px;
  z-index: 1;
  padding: 1px 6px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 12px;
  pointer-events: none;
}

.tile .label button {
  margin-left: 4px;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  pointer-events: auto;
}

.tile .empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
}

dialog {
  border: 0;
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  width: min(560px, calc(100vw - 32px));
}

dialog h2 {
  margin: 4px 0 8px;
  font-size: 14px;
}

dialog input {
  width: 100%;
  margin: 6px 0;
  padding: 6px;
  font: inherit;
}

dialog form {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

dialog form input {
  flex: 1 1 260px;
}

dialog menu {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 0;
}

#paste-form {
  display: block;
}

#preset-list {
  margin: 0 0 6px;
  padding: 0;
  list-style: none;
}

#preset-list li {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 0;
  border-bottom: 1px solid #333;
}

#preset-list label {
  display: flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
}

#preset-list label input {
  width: auto;
  margin: 0;
}

#preset-list .url {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.help {
  color: var(--muted);
  font-size: 12px;
}

.error {
  color: #ff7a7a;
}