/* ------------------------------------------------------------------ *\
   Lienzo — Herramientas de audio (familia)
   Compartido por /herramientas/audio/ y sus 6 hijas.
   1. Zona de carga      4. Ajustes
   2. Espacio de trabajo 5. Acciones
   3. Onda y transporte  6. Responsive
\* ------------------------------------------------------------------ */

/* 1. Zona de carga --------------------------------------------------- */

.loader {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.dropzone {
  display: grid;
  place-items: center;
  gap: 0.9rem;
  padding: clamp(2rem, 6vw, 3.4rem) 1.5rem;
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--panel);
  text-align: center;
  cursor: pointer;
  transition: border-color 200ms ease, background-color 200ms ease, transform 200ms var(--ease);
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: var(--violeta);
  background: var(--panel-hover);
}

.dropzone[data-over="true"] {
  border-color: var(--turquesa);
  background: color-mix(in oklab, var(--turquesa) 10%, var(--panel));
  transform: scale(1.01);
}

.dropzone__icon {
  width: 46px;
  height: 46px;
  color: var(--violeta);
}

.dropzone__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.dropzone__hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.dropzone__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 0.3rem;
}

.error {
  margin: 0;
  padding: 0.8rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid color-mix(in oklab, var(--coral) 45%, transparent);
  background: color-mix(in oklab, var(--coral) 12%, transparent);
  color: var(--text);
  font-size: 0.92rem;
}

/* 2. Espacio de trabajo ---------------------------------------------- */

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 1.4rem;
  margin-top: 2rem;
  align-items: start;
}

.workspace[data-busy="true"] .panel { opacity: 0.65; pointer-events: none; }

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  overflow: hidden;
  transition: opacity 180ms ease;
}

.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--line);
}

.panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

/* 3. Onda y transporte ------------------------------------------------- */

.player {
  padding: 1.2rem;
  display: grid;
  gap: 0.9rem;
}

.waveform {
  position: relative;
  height: 140px;
  border-radius: var(--radius);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  overflow: hidden;
}

.waveform canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Rango de selección (recortar): dos manijas + velo sobre lo descartado */
.waveform__velo {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: color-mix(in oklab, var(--bg) 72%, transparent);
  pointer-events: none;
}

.waveform__velo--der {
  left: auto;
  right: 0;
}

.waveform__manija {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 12px;
  margin-left: -6px;
  cursor: ew-resize;
  touch-action: none;
}

.waveform__manija::before {
  content: "";
  position: absolute;
  inset: 0 5px;
  background: var(--turquesa);
  border-radius: 3px;
}

.waveform__manija:hover::before,
.waveform__manija:focus-visible::before {
  background: var(--ambar);
}

.waveform__cursor {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--ink, var(--text));
  opacity: 0.85;
  pointer-events: none;
}

.transporte {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.transporte__play {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--bg-soft);
  color: var(--text);
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease;
}

.transporte__play:hover { background: var(--violeta); color: #fff; }

.transporte__tiempo {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--muted);
  min-width: 6.5rem;
}

/* Lista de pistas — herramienta "unir" */
.tracklist {
  display: grid;
  gap: 0.6rem;
  padding: 1.2rem;
}

.track {
  display: grid;
  grid-template-columns: 28px 1fr auto auto;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
}

.track__handle {
  cursor: grab;
  color: var(--faint);
  text-align: center;
  user-select: none;
}

.track__info { display: grid; gap: 0.15rem; min-width: 0; }
.track__name { font-size: 0.9rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.track__meta { font-size: 0.78rem; color: var(--faint); }

.track__mini {
  width: 90px;
  height: 30px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg);
}
.track__mini canvas { width: 100%; height: 100%; display: block; }

.track__quitar {
  border: none;
  background: transparent;
  color: var(--faint);
  cursor: pointer;
  padding: 0.3rem;
  border-radius: 6px;
  transition: color 140ms ease, background-color 140ms ease;
}
.track__quitar:hover { color: var(--coral); background: color-mix(in oklab, var(--coral) 12%, transparent); }

.tracklist__add {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 0.7rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease;
}
.tracklist__add:hover { border-color: var(--violeta); color: var(--text); }

/* Estadísticas */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.9rem;
  padding: 1.1rem;
  border-top: 1px solid var(--line);
}

.stat { display: grid; gap: 0.2rem; min-width: 0; }

.stat__label {
  font: 700 0.68rem/1 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}

.stat__value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-variant-numeric: tabular-nums;
}

.stat__value--small {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--muted);
}

.stat__value--win { color: var(--turquesa); }

/* 4. Ajustes ----------------------------------------------------------- */

.sidebar {
  display: grid;
  gap: 1.2rem;
  position: sticky;
  top: 84px;
}

.settings {
  display: grid;
  gap: 1.1rem;
  padding: 1.1rem;
}

.field { display: grid; gap: 0.45rem; font-size: 0.9rem; }

.field__label {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  color: var(--muted);
  font-weight: 600;
}

.field__label output {
  color: var(--violeta);
  font-variant-numeric: tabular-nums;
}

.field input[type="range"] { width: 100%; accent-color: var(--violeta); }

.field__hint { color: var(--faint); font-size: 0.8rem; }

.switch {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.switch input { margin-top: 0.2rem; accent-color: var(--violeta); flex: 0 0 auto; }
.switch span { display: grid; gap: 0.15rem; }
.switch small { color: var(--faint); font-size: 0.79rem; }

.radiogroup { display: grid; gap: 0.5rem; }

.radiogroup label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.radiogroup label:has(input:checked) {
  border-color: var(--violeta);
  background: color-mix(in oklab, var(--violeta) 8%, transparent);
}

.radiogroup input { margin-top: 0.2rem; accent-color: var(--violeta); flex: 0 0 auto; }
.radiogroup span { display: grid; gap: 0.1rem; font-size: 0.88rem; }
.radiogroup small { color: var(--faint); font-size: 0.78rem; }

/* 5. Acciones ------------------------------------------------------------ */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1.1rem;
  border-top: 1px solid var(--line);
}

.actions .btn { flex: 1 1 auto; justify-content: center; }

.progreso {
  height: 6px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  overflow: hidden;
  margin: 0 1.1rem 1.1rem;
}

.progreso__barra {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--violeta), var(--turquesa));
  transition: width 120ms linear;
}

.tool-note {
  margin-top: 1.4rem;
  color: var(--faint);
  font-size: 0.84rem;
  text-align: center;
}

.tool-note code { font-family: var(--font-mono); }

/* 6. Responsive ---------------------------------------------------------- */

@media (max-width: 1000px) {
  .workspace { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

@media (max-width: 620px) {
  .actions .btn { flex-basis: 100%; }
  .track { grid-template-columns: 22px 1fr auto; }
  .track__mini { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .dropzone,
  .progreso__barra { transition: none; }
}