@import url("../shared/tokens.css");

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font-mono);
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ─── HEADER ───────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.transport {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 12px;
}

.btn {
  appearance: none;
  background: var(--raised);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.05s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn:hover { border-color: var(--border-hi); background: var(--raised2); }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: #111;
  border-color: var(--accent);
  font-weight: 600;
}
.btn-primary:hover { background: var(--accent-d); border-color: var(--accent-d); }

.btn-ghost {
  background: transparent;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  justify-content: center;
  border-radius: 50%;
}

/* record button */
.rec-btn {
  border-color: var(--red);
  background: var(--raised);
}
.rec-btn .rec-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 8px rgba(255,69,69,0.5);
  transition: border-radius 0.15s;
}
.rec-btn:hover { background: var(--raised2); }
.rec-btn.recording {
  background: var(--red);
  border-color: var(--red);
  animation: rec-pulse 1.2s infinite;
}
.rec-btn.recording .rec-dot {
  background: #fff;
  border-radius: 3px;     /* dot → square = stop */
  width: 14px; height: 14px;
  box-shadow: none;
}
@keyframes rec-pulse { 0%,100%{ box-shadow: 0 0 0 0 rgba(255,69,69,0.5); } 50%{ box-shadow: 0 0 0 6px rgba(255,69,69,0); } }

.bpm {
  display: flex;
  align-items: baseline;
  gap: 6px;
  background: var(--raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 6px 12px;
  cursor: ns-resize;
  user-select: none;
}
.bpm:hover { border-color: var(--border-hi); }
.bpm-value {
  min-width: 40px;
  text-align: right;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 16px;
}
.bpm input.bpm-edit {
  width: 48px;
  background: transparent;
  border: none;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 16px;
  text-align: right;
  outline: none;
}
.bpm label { font-size: 11px; color: var(--dim); letter-spacing: 0.1em; }

.position {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--dim);
  margin-left: 8px;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}
.position .pos-num { color: var(--text); }

.spacer { flex: 1; }

.master-vol {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 6px 12px;
}
.master-vol label { font-size: 11px; color: var(--dim); letter-spacing: 0.1em; }
.master-vol input[type=range] {
  -webkit-appearance: none; appearance: none;
  width: 90px; height: 4px;
  background: var(--border-hi);
  border-radius: 2px; outline: none; cursor: pointer;
}
.master-vol input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); cursor: pointer;
}
.master-vol input[type=range]::-moz-range-thumb {
  width: 14px; height: 14px; border: none; border-radius: 50%;
  background: var(--accent); cursor: pointer;
}

.song-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

/* ─── SONGS LIST ───────────────────────────────────── */
.songs-list {
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}
.songs-empty {
  color: var(--dim);
  font-size: 13px;
  text-align: center;
  padding: 30px 10px;
  line-height: 1.6;
}
.song-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 10px 12px;
}
.song-row:hover { border-color: var(--border-hi); }
.song-meta { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.song-row-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.song-row-sub { font-size: 11px; color: var(--dim); }
.song-del { color: var(--red); }
.song-del:hover { border-color: rgba(255,69,69,0.4); }

/* ─── TOAST ────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--raised2);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius-m);
  padding: 10px 18px;
  font-size: 13px;
  color: var(--text);
  box-shadow: var(--shadow-2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ─── MAIN: rack ───────────────────────────────────── */
.rack {
  flex: 1;
  overflow-y: auto;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.rack-empty {
  margin: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: var(--dim);
  text-align: center;
  padding: 60px 20px;
}
.rack-empty .hint-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  color: var(--text);
  letter-spacing: 0.02em;
}
.rack-empty .hint-sub { font-size: 13px; max-width: 380px; line-height: 1.6; }

.track {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-1);
  /* Keep natural height so the rack scrolls instead of squishing tracks. */
  flex: 0 0 auto;
}
.track-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--raised);
  cursor: pointer;            /* click to fold/unfold */
  user-select: none;
}
.track-header:hover { background: var(--raised2); }
.track.dragging { opacity: 0.45; }
.track.drop-target { box-shadow: 0 -2px 0 var(--accent) inset; }
.track-grip {
  cursor: grab;
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  flex-shrink: 0;
  letter-spacing: -2px;
}
.track-grip:hover { color: var(--dim); }
.track-grip:active { cursor: grabbing; }
.track-fold {
  font-size: 11px;
  color: var(--dim);
  width: 14px;
  text-align: center;
  transition: transform 0.15s;
  flex-shrink: 0;
}
.track.collapsed .track-fold { transform: rotate(-90deg); }
.track-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px currentColor;
  flex-shrink: 0;
}
.track-name {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.track-tagline {
  color: var(--dim); font-size: 12px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.track-controls { margin-left: auto; display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

/* per-track mixer: volume + mute */
.track-mix { display: flex; align-items: center; gap: 7px; }
.track-vol {
  -webkit-appearance: none; appearance: none;
  width: 84px; height: 4px;
  background: var(--border-hi);
  border-radius: 2px; outline: none; cursor: pointer;
}
.track-vol::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--accent); cursor: pointer;
}
.track-vol::-moz-range-thumb {
  width: 13px; height: 13px; border: none; border-radius: 50%;
  background: var(--accent); cursor: pointer;
}
.track-mute {
  width: 28px; height: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  background: var(--raised);
  color: var(--dim);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
}
.track-mute:hover { color: var(--text); border-color: var(--border-hi); }
.track-mute.muted { background: var(--red); color: #fff; border-color: var(--red); }

.track-body {
  min-height: 80px;
  padding: 16px;
  background: var(--bg);
}
.track.collapsed .track-body { display: none; }

/* ─── INSTRUMENT PICKER ────────────────────────────── */
.picker-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.picker-backdrop.open { display: flex; }

.picker {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  width: min(720px, 92vw);
  max-height: 80vh;
  overflow: hidden;
  box-shadow: var(--shadow-2);
  display: flex;
  flex-direction: column;
}
.picker-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.picker-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
}
.picker-grid {
  padding: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  overflow-y: auto;
}
.picker-card {
  background: var(--raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 16px 14px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.05s;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--text);
  font-family: var(--font-mono);
}
.picker-card:hover { border-color: var(--accent); }
.picker-card:active { transform: translateY(1px); }
.picker-card .card-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px currentColor;
}
.picker-card .card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
}
.picker-card .card-tagline {
  color: var(--dim);
  font-size: 12px;
}