@import "_tokens.css";

/* Skeleton placeholder while JS lazy-mounts */
.spark-tts {
  --_height: 56px;
  background: var(--spark-tts-bg);
  color: var(--spark-tts-fg);
  border: 1px solid var(--spark-tts-border);
  border-radius: var(--spark-tts-radius);
  font-family: var(--spark-tts-font);
  font-size: 1.4rem;
  line-height: 1.4;
  margin: 0 0 2.4rem;
  padding: 10px 14px;
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  grid-template-rows: var(--_height) auto;
  grid-template-areas:
    "play  label  time  speed  more"
    "track track  track track  track";
  gap: 8px 14px;
  align-items: center;
  contain: layout style;
}

.spark-tts.is-loading,
.spark-tts.is-error {
  --_height: 40px;
  grid-template-areas: "play label label label more";
}

.spark-tts__play {
  grid-area: play;
  width: 40px;
  height: 40px;
  border: 0;
  padding: 0;
  background: var(--spark-tts-accent);
  color: var(--spark-tts-on-accent);
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform 120ms ease, background 120ms ease;
}
.spark-tts__play:hover { background: var(--spark-tts-accent-hover); transform: scale(1.05); }
.spark-tts__play:focus-visible { outline: 3px solid var(--spark-tts-accent); outline-offset: 2px; }
.spark-tts__play[data-state="playing"] svg.icon-play { display: none; }
.spark-tts__play[data-state="paused"]  svg.icon-pause { display: none; }
.spark-tts__play[disabled] { opacity: 0.6; cursor: wait; }

.spark-tts__label {
  grid-area: label;
  font-weight: 500;
}

.spark-tts__time {
  grid-area: time;
  font-variant-numeric: tabular-nums;
  color: var(--spark-tts-muted);
}

.spark-tts__speed {
  grid-area: speed;
  background: transparent;
  color: inherit;
  border: 1px solid var(--spark-tts-border);
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  font-family: inherit;
  font-size: 1.2rem;
  transition: border-color 120ms ease;
}
.spark-tts__speed:hover { border-color: var(--spark-tts-accent); }

.spark-tts__more {
  grid-area: more;
  background: transparent;
  color: inherit;
  border: 0;
  cursor: pointer;
  font-size: 2rem;
  line-height: 1;
}

.spark-tts__track {
  grid-area: track;
  height: 4px;
  background: var(--spark-tts-track-bg);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.spark-tts__track:focus-visible { outline: 2px solid var(--spark-tts-accent); outline-offset: 2px; }

.spark-tts__track-progress {
  height: 100%;
  background: var(--spark-tts-accent);
  width: 0;
  transition: width 100ms linear;
}

/* Skeleton/error states */
.spark-tts.is-loading .spark-tts__label,
.spark-tts.is-error .spark-tts__label { color: var(--spark-tts-muted); }
.spark-tts.is-loading .spark-tts__label { animation: spark-tts-pulse 1.4s ease-in-out infinite; }
@keyframes spark-tts-pulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 1; } }

.spark-tts.is-error .spark-tts__label { color: var(--spark-tts-accent-hover); }
.spark-tts.is-error .spark-tts__play { display: none; }

/* Sticky on scroll (optional — opt-in via .is-sticky class set by JS on scroll) */
.spark-tts.is-sticky {
  position: sticky;
  top: var(--theme-header-height, 0);
  z-index: var(--spark-tts-z-sticky);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}

/* Mobile */
@media (max-width: 480px) {
  .spark-tts { font-size: 1.3rem; padding: 6px 10px; }
  .spark-tts__speed { padding: 2px 6px; font-size: 1.1rem; }
}