:root {
  color-scheme: dark;

  --bg: #0d0f13;
  --panel: #14171d;
  --panel-2: #1b1f27;
  --border: #262b34;
  --text: #e6e9ee;
  --muted: #8b93a1;
  --accent: #5b8cff;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ---------------------------------------------------------------- topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;

  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;

  padding: 10px 14px;

  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-size: 14px;
  letter-spacing: 0.02em;
}

.brand strong {
  color: var(--accent);
}

.brand__row {
  display: flex;
  align-items: center;
  gap: 9px;
}

.brand__logo {
  display: block;

  width: auto;
  height: 22px;
}

.brand__title {
  color: var(--text);
}

.brand span {
  color: var(--muted);
}

.brand__source {
  display: block;
  margin-top: 2px;

  color: #6b7280;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.now {
  flex: 0 0 auto;

  padding: 7px 14px;

  background: #10131a;
  border-bottom: 1px solid var(--border);

  color: var(--muted);
  font-size: 11.5px;
  font-weight: 600;

  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.picker {
  display: flex;
  align-items: center;
  gap: 8px;
}

.picker__label {
  color: var(--muted);
}

.copy {
  display: flex;
  overflow: hidden;

  border: 1px solid var(--border);
  border-radius: 7px;
}

.copy__btn {
  padding: 6px 8px;

  background: var(--panel-2);
  color: var(--muted);

  border: 0;
  border-right: 1px solid var(--border);

  font: inherit;
  font-size: 11px;
  white-space: nowrap;
  cursor: pointer;
}

.copy__btn:last-child {
  border-right: 0;
}

.copy__btn:hover {
  background: #232833;
  color: var(--text);
}

.copy__btn.done {
  color: #6ee7a8;
}

select {
  max-width: 230px;
  padding: 6px 8px;

  background: var(--panel-2);
  color: var(--text);

  border: 1px solid var(--border);
  border-radius: 7px;

  font: inherit;
}

select:hover {
  border-color: #39404c;
}

.toggles label {
  display: flex;
  align-items: center;
  gap: 5px;

  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.toggles input {
  accent-color: var(--accent);
}

.segmented {
  display: flex;
  overflow: hidden;

  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 7px;
}

.segmented button {
  padding: 6px 11px;

  background: transparent;
  color: var(--muted);

  border: 0;
  font: inherit;
  cursor: pointer;
}

.segmented button.active {
  background: var(--accent);
  color: #fff;
}

.widths {
  gap: 4px;
}

.widths button {
  padding: 6px 9px;

  background: var(--panel-2);
  color: var(--muted);

  border: 1px solid var(--border);
  border-radius: 7px;

  font: inherit;
  cursor: pointer;
}

.widths button.active {
  background: rgba(91, 140, 255, 0.15);
  border-color: var(--accent);
  color: var(--text);
}

.refresh {
  margin-left: auto;
  padding: 6px 11px;

  background: var(--panel-2);
  color: var(--text);

  border: 1px solid var(--border);
  border-radius: 7px;

  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.refresh:hover {
  border-color: var(--accent);
}

/* ----------------------------------------------------------------- stage */
.stage {
  flex: 1;

  display: flex;
  align-items: flex-start;
  gap: 18px;

  padding: 18px;

  overflow: auto;
}

.stage.single {
  display: block;
}

.frame {
  flex: 0 0 auto;

  display: flex;
  flex-direction: column;
  gap: 6px;

  margin: 0;
}

.stage.single .frame {
  width: 100%;
}

.frame figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;

  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.frame figcaption a {
  color: var(--muted);
  text-decoration: none;
  text-transform: none;
  letter-spacing: 0;
}

.frame figcaption a:hover {
  color: var(--accent);
}

.frame iframe {
  display: block;

  width: 100%;
  height: calc(100vh - 150px);
  min-height: 520px;

  background: #fff;

  border: 1px solid var(--border);
  border-radius: 10px;
}

.hint {
  padding: 8px 2px;
  color: var(--muted);
}

/* ---------------------------------------------------------------- toast */
#toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 100;

  padding: 10px 16px;

  background: #1f2530;
  color: var(--text);

  border: 1px solid var(--border);
  border-radius: 9px;

  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);

  font-size: 12.5px;

  opacity: 0;
  transform: translate(-50%, 12px);
  pointer-events: none;

  transition: opacity 0.16s ease, transform 0.16s ease;
}

#toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* --------------------------------------------------------- narrow topbar */
@media (max-width: 1100px) {
  .brand {
    width: 100%;
  }

  .refresh {
    margin-left: 0;
  }
}