/* ============================================================
   audio.css — Music volume control (popover + inline row).

   Shared by the landing navbar, the in-game HUD topbar and the pause
   menu, so it lives in its own file rather than in hud.css. Same glass
   vocabulary as the rest of the UI: dark translucent fill, blur, a
   green-tinted hairline, Space Grotesk micro-captions.
   ============================================================ */

/* ── Landing navbar trigger — sits beside Connect Wallet ── */
.landing-nav-audio {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  flex: none;
  border-radius: var(--radius-circle);
  border: 1px solid var(--color-border);
  background: rgba(28, 33, 40, 0.9);
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  line-height: 1;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast),
              transform var(--transition-fast);
}

.landing-nav-audio:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.landing-nav-audio:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ── Popover ──
   Above the toast layer: it can be opened from the HUD, which already
   sits under toasts, and it must never be covered by one. */
.audio-popover {
  position: fixed;
  top: 0;
  left: 0;
  z-index: calc(var(--z-toast) + 1);
  min-width: 220px;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-lg);
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(63, 185, 80, 0.22);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition-fast), transform var(--transition-fast),
              visibility var(--transition-fast);
}

.audio-popover.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ── Control: caption + readout over a mute button and slider ── */
.audio-ctl {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.audio-ctl-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
}

.audio-ctl-title {
  font-family: var(--font-crypto);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.audio-ctl-value {
  font-family: var(--font-wordmark);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.audio-ctl-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.audio-mute-btn {
  width: 32px;
  height: 32px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: var(--radius-circle);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  line-height: 1;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.audio-mute-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.audio-mute-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ── Slider ──
   The filled portion is painted with a --fill percentage the JS keeps
   in step with the value, because a range input has no styleable
   "progress" part in WebKit. */
.audio-slider {
  --fill: 50%;
  flex: 1;
  min-width: 120px;
  height: 20px;
  margin: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.audio-slider:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--radius-pill);
}

.audio-slider::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: var(--radius-pill);
  background: linear-gradient(
    to right,
    var(--color-primary) 0 var(--fill),
    rgba(255, 255, 255, 0.12) var(--fill) 100%
  );
}

.audio-slider::-moz-range-track {
  height: 6px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
}

.audio-slider::-moz-range-progress {
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
}

.audio-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  margin-top: -4px; /* centre the 14px thumb on the 6px track */
  border-radius: var(--radius-circle);
  border: none;
  background: var(--color-white);
  box-shadow: var(--shadow-glow-green);
  transition: transform var(--transition-fast);
}

.audio-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: var(--radius-circle);
  border: none;
  background: var(--color-white);
  box-shadow: var(--shadow-glow-green);
}

.audio-slider:hover::-webkit-slider-thumb { transform: scale(1.15); }

/* Muted: the track empties and the thumb goes grey, so the state reads
   at a glance even though the slider keeps its position. */
.audio-slider.is-muted::-webkit-slider-thumb { background: var(--color-text-dim); box-shadow: none; }
.audio-slider.is-muted::-moz-range-thumb { background: var(--color-text-dim); box-shadow: none; }
.audio-slider.is-muted::-moz-range-progress { background: transparent; }

/* ── Inline variant (pause menu) — a bordered row, not a floating panel ── */
.audio-ctl--inline {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(28, 33, 40, 0.6);
}