/* ==========================================================================
   audio-player.css — Lab Notes audio player ("Audio Log")
   Consumes: tokens.css (all custom properties), base.css, components.css
   Produces: .lab-player and its internals (all scoped under .lab-player so the
             generic class names below cannot collide with site components such
             as .btn). Theme-aware: every color resolves from design tokens, so
             the player tracks the light/dark toggle automatically.
   The spectrum scope reads --orange / --grid-strong at runtime (see
   assets/js/lab-notes-player.js) so its canvas stays in sync with the theme.
   ========================================================================== */

.lab-player {
  position: relative;
  max-width: 720px;
  background: var(--surface);
  border: 1px solid var(--hair);
  border-top: 2px solid var(--orange);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

/* ---- header / panel bar ---- */
.lab-player .lnp-head {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  padding: var(--space-12) var(--space-16);
  border-bottom: 1px solid var(--hair);
  background: var(--surface-strong);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.lab-player .lnp-mark {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  flex: 0 0 auto;
  background: var(--orange);
  position: relative;
}

.lab-player .lnp-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  transform: translate(-50%, -50%) rotate(45deg);
  border: 1.5px solid var(--canvas);
  border-radius: 1px;
}

.lab-player .lnp-id {
  color: var(--orange);
  font-weight: var(--fw-bold);
}

.lab-player .lnp-sub {
  color: var(--muted);
}

.lab-player .lnp-load {
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-2);
  background: transparent;
  border: 1px solid var(--hair);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.lab-player .lnp-load:hover {
  border-color: var(--orange);
  color: var(--fg);
}

/* ---- spectrum scope ---- */
.lab-player .stage {
  padding: var(--space-16) var(--space-16) var(--space-4);
}

.lab-player .scope-wrap {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--lift);
  border: 1px solid var(--hair-faint);
}

.lab-player canvas#scope {
  display: block;
  width: 100%;
  height: 120px;
}

.lab-player .scope-tag,
.lab-player .scope-state {
  position: absolute;
  top: var(--space-8);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lab-player .scope-tag {
  left: var(--space-12);
  color: var(--muted);
}

.lab-player .scope-state {
  right: var(--space-12);
  color: var(--orange);
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.lab-player .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 8px var(--orange);
}

.lab-player .scope-state.idle {
  color: var(--muted);
}

.lab-player .scope-state.idle .dot {
  background: var(--muted);
  box-shadow: none;
}

/* ---- now playing ---- */
.lab-player .meta {
  display: flex;
  align-items: flex-start;
  gap: var(--space-12);
  padding: var(--space-12) var(--space-16) var(--space-4);
}

.lab-player .meta .idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: var(--fw-semibold);
  color: var(--orange);
  padding-top: 3px;
  flex: 0 0 auto;
  letter-spacing: 0.04em;
}

.lab-player .meta .mtitle {
  font-size: 1rem;
  font-weight: var(--fw-semibold);
  line-height: 1.3;
  color: var(--fg);
}

.lab-player .meta .mnote {
  font-size: var(--text-caption);
  color: var(--fg-3);
  margin-top: 3px;
  line-height: var(--leading-body);
}

.lab-player .meta .mdate {
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  padding-top: 4px;
  white-space: nowrap;
}

/* ---- scrubber ---- */
.lab-player .scrub {
  padding: var(--space-12) var(--space-16) var(--space-4);
}

.lab-player .bar {
  position: relative;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--hair);
  cursor: pointer;
  touch-action: none;
}

.lab-player .bar .buf {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  border-radius: var(--radius-pill);
  background: var(--hair-active);
  width: 0;
}

.lab-player .bar .fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  border-radius: var(--radius-pill);
  background: var(--orange);
  width: 0;
}

.lab-player .bar .thumb {
  position: absolute;
  top: 50%;
  left: 0;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--orange);
  border: 2px solid var(--canvas);
  transform: translate(-50%, -50%) scale(0.6);
  opacity: 0;
  transition: opacity 0.12s ease, transform 0.12s ease;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.lab-player .bar:hover .thumb,
.lab-player .bar.drag .thumb {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.lab-player .times {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-8);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ---- transport ---- */
.lab-player .transport {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  padding: var(--space-8) var(--space-16) var(--space-16);
}

.lab-player .lnp-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: var(--fg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.06s ease, color 0.15s ease;
}

.lab-player .lnp-btn:active {
  transform: scale(0.92);
}

.lab-player .lnp-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.lab-player .lnp-btn svg {
  display: block;
}

.lab-player .lnp-btn.lnp-ghost {
  color: var(--muted);
}

.lab-player .lnp-btn.lnp-ghost:hover {
  color: var(--fg);
}

.lab-player .lnp-btn.lnp-play {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--fg);
  color: var(--canvas);
  box-shadow: var(--shadow-soft);
  transition: transform 0.06s ease, opacity 0.2s ease;
}

.lab-player .lnp-btn.lnp-play:hover {
  opacity: 0.9;
}

.lab-player .lnp-btn.lnp-play:active {
  transform: scale(0.94);
}

.lab-player .toggle {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--hair);
  border-radius: var(--radius-sm);
  padding: var(--space-8) var(--space-8);
  background: transparent;
  cursor: pointer;
  transition: color 0.14s ease, border-color 0.14s ease;
}

.lab-player .toggle:hover {
  color: var(--fg-2);
  border-color: var(--hair-active);
}

.lab-player .toggle.on {
  color: var(--orange);
  border-color: var(--orange);
}

.lab-player .vol {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.lab-player .vol .lbl {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.lab-player input[type="range"].volume {
  -webkit-appearance: none;
  appearance: none;
  width: 86px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(
    to right,
    var(--orange) 0%,
    var(--orange) var(--v, 70%),
    var(--hair) var(--v, 70%)
  );
  cursor: pointer;
}

.lab-player input[type="range"].volume::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--orange);
  border: 2px solid var(--canvas);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.lab-player input[type="range"].volume::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--orange);
  border: 2px solid var(--canvas);
}

/* ---- track list ---- */
.lab-player .list {
  border-top: 1px solid var(--hair);
  background: var(--surface);
}

.lab-player .list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-12) var(--space-16) var(--space-8);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.lab-player .rows {
  max-height: 236px;
  overflow-y: auto;
  padding: 0 var(--space-8) var(--space-8);
}

.lab-player .rows::-webkit-scrollbar {
  width: 8px;
}

.lab-player .rows::-webkit-scrollbar-thumb {
  background: var(--hair);
  border-radius: var(--radius-pill);
  border: 2px solid var(--surface);
}

.lab-player .row {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  padding: var(--space-12);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  transition: background 0.12s ease;
}

.lab-player .row:hover {
  background: var(--surface-strong);
}

.lab-player .row.active {
  background: var(--surface-strong);
}

.lab-player .row.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  bottom: 9px;
  width: 2px;
  border-radius: var(--radius-pill);
  background: var(--orange);
}

.lab-player .row .n {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  width: 20px;
  flex: 0 0 auto;
  text-align: right;
  letter-spacing: 0.02em;
}

.lab-player .row.active .n {
  display: none;
}

.lab-player .row .eq {
  width: 14px;
  flex: 0 0 auto;
  display: none;
  gap: 2px;
  align-items: flex-end;
  height: 13px;
}

.lab-player .row.active .eq {
  display: flex;
}

.lab-player .eq span {
  width: 3px;
  background: var(--orange);
  border-radius: 1px;
  height: 30%;
  animation: lnp-eq 0.9s ease-in-out infinite;
}

.lab-player .eq span:nth-child(2) {
  animation-delay: 0.18s;
}

.lab-player .eq span:nth-child(3) {
  animation-delay: 0.36s;
}

.lab-player .row.paused .eq span {
  animation-play-state: paused;
}

@keyframes lnp-eq {
  0%, 100% { height: 25%; }
  50% { height: 100%; }
}

.lab-player .row .info {
  min-width: 0;
  flex: 1;
}

.lab-player .row .rt {
  font-size: 0.9rem;
  font-weight: var(--fw-medium);
  color: var(--fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lab-player .row .rn {
  font-size: 0.74rem;
  color: var(--fg-3);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lab-player .row .rd {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--muted);
  flex: 0 0 auto;
  letter-spacing: 0.04em;
}

.lab-player .row .rdur {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--fg-3);
  flex: 0 0 auto;
  width: 42px;
  text-align: right;
}

.lab-player .empty {
  padding: var(--space-32) var(--space-20);
  text-align: center;
  color: var(--fg-3);
  font-size: var(--text-caption);
  line-height: var(--leading-body);
}

.lab-player .empty b {
  color: var(--fg);
  font-weight: var(--fw-semibold);
}

/* ---- footer ---- */
.lab-player .foot {
  border-top: 1px solid var(--hair);
  padding: var(--space-12) var(--space-16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---- reduced motion: hold the eq bars still ---- */
@media (prefers-reduced-motion: reduce) {
  .lab-player .eq span {
    animation: none;
    height: 60%;
  }
}

@media (max-width: 480px) {
  .lab-player .meta .mdate { display: none; }
  .lab-player .row .rd { display: none; }
  .lab-player .vol { display: none; }
}