.sa-bar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 22px;
  height: calc(var(--bar-h) + env(safe-area-inset-top, 0px));
  padding: env(safe-area-inset-top, 0px) var(--gutter) 0;
  border-bottom: 1px solid var(--line-faint);
  background: rgba(3, 5, 10, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: var(--hud);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--line-soft);
}

.sa-bar-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.sa-bar-mark b {
  padding: 3px 10px 3px 8px;
  background: var(--ink-cool);
  color: var(--void);
  font-family: var(--station);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.34em;
}

.sa-bar-mark span {
  color: var(--line-soft);
}

.sa-bar-section {
  min-width: 20ch;
  color: var(--ink-cool);
  transition: opacity 200ms ease, translate 300ms var(--snap);
}

.sa-bar-section.is-swapping {
  opacity: 0;
  translate: 0 -6px;
}

.sa-bar-progress {
  position: relative;
  flex: 1;
  height: 1px;
  background: var(--line-faint);
}

.sa-bar-progress i {
  position: absolute;
  inset: 0;
  background: var(--ink-cool);
  transform-origin: left;
  transform: scaleX(var(--progress, 0));
}

.sa-bar-stat b {
  font-family: var(--num);
  letter-spacing: 0.08em;
  font-weight: 400;
  color: var(--ink-cool);
  font-variant-numeric: tabular-nums;
}

.sa-sound {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 24ch;
  padding: 4px 0;
  border: 0;
  background: none;
  color: var(--line-soft);
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
  transition: color 260ms ease;
}

.sa-sound span {
  overflow: hidden;
  text-overflow: ellipsis;
}

.sa-sound i {
  flex: none;
  width: 7px;
  height: 7px;
  border: 1px solid currentColor;
  border-radius: 50%;
  transition: background 260ms ease, box-shadow 260ms ease;
}

.sa-sound:hover {
  color: var(--ink-cool);
}

.sa-sound[aria-pressed='true'] {
  color: var(--ink-cool);
}

.sa-sound[aria-pressed='true'] i {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: sa-blink 2.4s ease-in-out infinite;
}

@keyframes sa-blink {
  50% { opacity: 0.2; }
}

.sa-rail {
  position: fixed;
  top: 50%;
  right: var(--gutter);
  z-index: 50;
  translate: 0 -50%;
  display: grid;
  gap: 6px;
  font-family: var(--hud);
  font-size: 10px;
  line-height: 1.4;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.sa-rail a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 12px 5px 8px;
  color: var(--line-soft) !important;
  text-decoration: none;
  isolation: isolate;
  transition: color 260ms var(--snap);
}

.sa-rail a::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  border-left: 1px solid var(--ink-cool);
  background: linear-gradient(90deg, rgba(228, 238, 252, 0.12), transparent);
  transform-origin: left;
  scale: 0 1;
  transition: scale 360ms var(--snap);
}

.sa-rail a span {
  opacity: 0.6;
}

.sa-rail a:hover {
  color: var(--ink-cool) !important;
}

.sa-rail a[aria-current='true'] {
  color: var(--ink-warm) !important;
}

.sa-rail a[aria-current='true']::before {
  scale: 1 1;
}

@media (max-width: 900px) {
  .sa-rail,
  .sa-bar-section,
  .sa-bar-mark span {
    display: none;
  }

  .sa-sound {
    max-width: 14ch;
  }

  .sa-bar {
    gap: 14px;
    font-size: 9px;
    letter-spacing: 0.16em;
  }
}