/* ═══════════════════════════════════════════════════
   NUN — board.css
   Board layout, columns, track cards, selection bar
═══════════════════════════════════════════════════ */

/* ─── Board container ────────────────────────────── */
#board-container {
  position: fixed;
  top: var(--header-h);
  left: var(--sidebar-w);
  right: 0;
  bottom: 0;
  overflow: hidden;
  transition: left .22s ease, right .22s ease, bottom .28s cubic-bezier(.4,0,.2,1);
}

body.queue-visible #board-container {
  right: var(--queue-w);
}

body.player-visible #board-container {
  bottom: var(--player-h);
}

#board {
  display: flex;
  flex-direction: row;
  gap: 12px;
  padding: 18px 18px;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  align-items: flex-start;
}

/* ─── Board-level drag state ─────────────────────── */
#board-container.file-dragging {
  outline: 2px dashed rgba(var(--accent-rgb),.5);
  outline-offset: -4px;
}

#file-drop-overlay { display: none; }

.drop-overlay-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  pointer-events: none;
}
.drop-icon {
  font-size: 40px;
  color: var(--accent);
}
.drop-overlay-inner p { font-size: 16px; font-weight: 600; color: var(--text-primary); }

/* ─── Column ─────────────────────────────────────── */
.column {
  width: 268px;
  min-width: 268px;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - var(--header-h) - 36px);
  transition: max-height .28s cubic-bezier(.4,0,.2,1);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  flex-shrink: 0;
  animation: fadeIn .18s ease;
  cursor: grab;
  transition: box-shadow var(--transition-fast), opacity var(--transition-fast);
}

/* El color de columna es un punto junto al título (mockup Studio Dark Pro),
   no una franja lateral: mismo lenguaje que los tabs móviles y los proyectos */
.column-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--column-color, var(--accent));
  flex-shrink: 0;
}
.column.dragging-column { opacity: .45; cursor: grabbing; }
.column.drag-over-column { box-shadow: 0 0 0 2px var(--accent); }

.column-header {
  padding: 12px 12px 8px;
  display: flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
  cursor: grab;
}

.column-title-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.column-title {
  font-family: 'Syne', system-ui, sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: default;
  user-select: none;
  letter-spacing: -.01em;
}
.column-title:empty::after { content: 'Sin nombre'; color: var(--text-muted); }

.column-title-input {
  background: var(--bg-elevated);
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'Syne', system-ui, sans-serif;
  font-size: 13px;
  font-weight: 600;
  padding: 3px 8px;
  width: 100%;
}
.column-title-input:focus { outline: none; }

.column-count {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 1px 6px;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.column-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}
.column-actions .btn-icon {
  width: 26px;
  height: 26px;
  font-size: 15px;
  opacity: 0;
  transition: opacity var(--transition-fast), background var(--transition-fast);
}
.column:hover .column-actions .btn-icon { opacity: 1; }

/* ─── Column body ────────────────────────────────── */
.column-body {
  flex: 1;
  overflow-y: auto;
  padding: 2px 8px 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 60px;
  transition: background var(--transition-fast);
}
.column-body.file-drag-over {
  background: rgba(var(--accent-rgb),.07);
  outline: 1px dashed rgba(var(--accent-rgb),.4);
  outline-offset: -4px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ─── Empty state ────────────────────────────────── */
.column-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 28px 12px;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  pointer-events: none;
  user-select: none;
}
.column-empty svg { opacity: .3; }

/* ─── Add track button ───────────────────────────── */
.column-add-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px;
  background: transparent;
  border: 1px dashed var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
  flex-shrink: 0;
  margin: 0 8px 8px;
  width: calc(100% - 16px);
}
.column-add-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(var(--accent-rgb),.06); }

/* ─── Track card ─────────────────────────────────── */
.track-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 10px 11px;
  cursor: grab;
  border: 1px solid var(--border);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
  position: relative;
  animation: fadeInUp .18s ease;
  user-select: none;
}
.track-card:hover {
  border-color: var(--border-light);
  box-shadow: 0 2px 12px rgba(12,11,20,.45);
}
.track-card:active { cursor: grabbing; }
.track-card.dragging  { opacity: .3; cursor: grabbing; }
.track-card.drag-over { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(var(--accent-rgb),.3); }
.track-card.menu-open { z-index: 10; }
.track-card.playing   {
  border-color: rgba(var(--accent-rgb),.5);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb),.15), 0 2px 12px rgba(var(--accent2-rgb),.25);
}

/* ─── Card row 1: dot + título + indicadores + menú ─ */
.card-row1 {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 3px;
}
.card-indicators {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  color: var(--text-muted);
}

/* ─── Waveform estático (identidad + botón de play) ─ */
.card-wave {
  position: relative;
  display: flex;
  align-items: center;
  gap: 2px;
  height: 30px;
  margin: 9px 0;
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.card-wave:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.card-wave i {
  flex: 1;
  min-width: 1px;
  background: rgba(var(--accent-rgb),.28);
  border-radius: 1.5px;
  transition: background var(--transition-fast);
}
.card-wave:hover i { background: rgba(var(--accent-rgb),.45); }

.wave-play {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) scale(.9);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  box-shadow: 0 4px 14px rgba(var(--accent2-rgb),.5);
  pointer-events: none;
}
.wave-play svg { width: 12px; height: 12px; }
.card-wave:hover .wave-play,
.card-wave:focus-visible .wave-play { opacity: 1; transform: translateY(-50%) scale(1); }

/* Playing: las barras toman el acento y respiran suavemente */
.track-card.playing .card-wave i { background: var(--accent); }
.track-card.playing .card-wave i:nth-child(odd)  { animation: wavebob 1.1s ease-in-out infinite; }
.track-card.playing .card-wave i:nth-child(even) { animation: wavebob 1.1s ease-in-out .55s infinite; }
@keyframes wavebob {
  0%, 100% { transform: scaleY(1); }
  50%      { transform: scaleY(.55); }
}

/* ─── Card menu ──────────────────────────────────── */
.card-menu { position: relative; }
.card-menu-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 5px;
  border-radius: var(--radius-sm);
  line-height: 1;
  opacity: 0;
  transition: opacity var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
  display: flex;
  align-items: center;
}
.track-card:hover .card-menu-btn { opacity: 1; }
.card-menu-btn:hover { color: var(--text-primary); background: var(--bg-hover); }

/* ─── Card title ─────────────────────────────────── */
.card-title {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -.01em;
}

/* ─── Card meta (texto plano: "3:07 · 122 BPM · Fm") ─ */
.card-meta {
  font-size: 12px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.card-meta b {
  color: var(--text-secondary);
  font-weight: 500;
}

/* ─── Card tags ──────────────────────────────────── */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
}

/* ─── Drop indicator ─────────────────────────────── */
.drop-indicator {
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  margin: 2px 0;
  pointer-events: none;
  opacity: .7;
}

/* ─── Selection mode ─────────────────────────────── */
.track-card.selectable {
  cursor: pointer;
}
.track-card.selectable:hover {
  border-color: rgba(var(--accent-rgb),.4);
}
.track-card.selected {
  border-color: var(--accent) !important;
  background: rgba(var(--accent-rgb),.1);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb),.25);
}

/* ─── Selection bar (floating) ───────────────────── */
#selection-bar {
  position: fixed;
  bottom: calc(var(--player-h) + 16px);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow);
  z-index: 500;
  font-size: 13px;
  animation: slideUp .18s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
#selection-bar.hidden { display: none; }
#selection-count {
  color: var(--text-secondary);
  min-width: 80px;
  font-variant-numeric: tabular-nums;
}
#selection-size {
  color: var(--text-muted);
  font-size: 11px;
}

/* ─── Player visible: shrink columns ────────────────── */
body.player-visible .column {
  max-height: calc(100vh - var(--header-h) - var(--player-h) - 36px);
}

/* ─── Mobile responsive — boardless (mockup) ─────────── */
/* En móvil la columna pierde la caja: las cards viven directamente sobre el
   fondo y el contexto de columna lo dan los TABS. Swipe con scroll-snap. */
@media (max-width: 700px) {
  /* T4: la barra de tabs de columnas (44px) vive bajo el header */
  #board-container {
    top: calc(var(--header-h) + 44px);
  }

  #board {
    padding: 14px 16px;
    gap: 32px;
    scroll-snap-type: x mandatory;
    scroll-padding-left: 16px;
  }

  .column {
    width: calc(100vw - 32px);
    min-width: calc(100vw - 32px);
    max-height: calc(100vh - var(--header-h) - 44px - 28px);
    background: transparent;
    border: none;
    border-radius: 0;
    scroll-snap-align: start;
  }

  body.player-visible .column {
    max-height: calc(100vh - var(--header-h) - 44px - var(--player-h) - 28px);
  }

  /* Los tabs son el header de columna; el FAB es el añadir */
  .column-header { display: none; }
  .column-add-btn { display: none; }
  .column-body { padding: 0 0 8px; gap: 10px; }

  /* Cards sobre el fondo: suben un nivel de superficie */
  .track-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 14px 15px 12px;
  }
  .card-title { font-size: 15px; }
  .card-meta { font-size: 12.5px; }
  .card-wave { height: 34px; }

  /* Mockup: sin círculo de play permanente — el waveform completo es el botón */
  .wave-play { display: none; }

  .card-menu-btn { opacity: 1; padding: 6px 8px; }
}