/* ================================================================
   tanpura.css — ChordStar Tanpura Drone Module
   Classical Indian aesthetic meets ChordStar dark theme
================================================================ */

#tp-app-root {
  --tp-gold:       #fbbf24;
  --tp-gold-dim:   rgba(251,191,36,0.35);
  --tp-amber:      #f59e0b;
  --tp-purple:     #d946ef;
  --tp-purple2:    #a855f7;
  --tp-bg:         #0a0514;
  --tp-card:       rgba(26,15,46,0.92);
  --tp-border:     rgba(251,191,36,0.18);
  --tp-text:       #f0e7ff;
  --tp-dim:        rgba(196,181,212,0.55);
  --tp-dim2:       rgba(196,181,212,0.22);
  --tp-radius:     14px;

  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  font-family: 'Outfit', sans-serif;
  color: var(--tp-text);
  background: var(--tp-bg);
  background-image:
    radial-gradient(ellipse at 15% 10%, rgba(251,191,36,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 85%, rgba(217,70,239,0.08) 0%, transparent 45%);
}

.tp-container {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 0 2rem;
  width: 100%;
}

/* ── Header ── */
.tp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.4rem 1rem;
  border-bottom: 1px solid var(--tp-border);
  background: linear-gradient(180deg, rgba(26,15,46,0.8) 0%, transparent 100%);
}

.tp-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tp-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tp-icon {
  font-size: 2.2rem;
  color: var(--tp-gold);
  filter: drop-shadow(0 0 8px rgba(251,191,36,0.5));
  line-height: 1;
  font-family: serif;
}

.tp-title {
  font-family: 'Cinzel', 'Outfit', serif;
  font-size: 1.35rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--tp-gold), var(--tp-amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.06em;
}

.tp-subtitle {
  font-size: 0.72rem;
  color: var(--tp-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 0.1rem;
}

.tp-note-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(251,191,36,0.08);
  border: 1px solid var(--tp-border);
  border-radius: 10px;
  padding: 0.45rem 1rem;
  min-width: 68px;
  gap: 0.1rem;
}

.tp-note-big {
  font-family: 'Cinzel', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--tp-gold);
  line-height: 1;
  letter-spacing: 0.04em;
  text-shadow: 0 0 14px rgba(251,191,36,0.5);
}

.tp-note-swar {
  font-size: 0.68rem;
  color: var(--tp-amber);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ── Body ── */
.tp-body {
  padding: 1.2rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

/* ── Strings Visualizer ── */
.tp-strings-wrap {
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(15,8,30,0.7);
  border: 1px solid var(--tp-border);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}

.tp-neck-left,
.tp-neck-right {
  width: 28px;
  min-height: 130px;
  background: linear-gradient(180deg, #2d1a05 0%, #4a2a08 30%, #2d1a05 100%);
  position: relative;
  flex-shrink: 0;
  z-index: 2;
}

.tp-neck-left::after,
.tp-neck-right::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, #c8a84b, #8b6914, #c8a84b);
}

.tp-neck-left::after { right: 0; }
.tp-neck-right::before { left: 0; }

.tp-strings-canvas {
  flex: 1;
  display: block;
  background: rgba(10,5,20,0.8);
  min-height: 130px;
}

/* ── Status ── */
.tp-status-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 28px;
}

.tp-loading {
  display: flex;
  align-items: center;
}

.tp-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(251,191,36,0.2);
  border-top-color: var(--tp-gold);
  border-radius: 50%;
  animation: tp-spin 0.8s linear infinite;
}

@keyframes tp-spin {
  to { transform: rotate(360deg); }
}

.tp-status-text {
  font-size: 0.82rem;
  color: var(--tp-dim);
  flex: 1;
}

.tp-file-info {
  font-size: 0.65rem;
  color: var(--tp-dim2);
  font-family: 'Courier New', monospace;
  letter-spacing: 0.02em;
}

/* ── Play Button ── */
.tp-play-row {
  display: flex;
  justify-content: center;
}

.tp-play-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2.5rem;
  background: linear-gradient(135deg, rgba(251,191,36,0.12) 0%, rgba(245,158,11,0.08) 100%);
  border: 1.5px solid rgba(251,191,36,0.4);
  border-radius: 50px;
  color: var(--tp-gold);
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.04em;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.tp-play-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(217,70,239,0.08));
  opacity: 0;
  transition: opacity 0.25s;
}

.tp-play-btn:hover::before { opacity: 1; }

.tp-play-btn:hover {
  border-color: rgba(251,191,36,0.7);
  box-shadow: 0 0 20px rgba(251,191,36,0.2), 0 4px 16px rgba(0,0,0,0.4);
  transform: translateY(-1px);
}

.tp-play-btn:active {
  transform: translateY(0);
}

.tp-play-btn.playing {
  background: linear-gradient(135deg, rgba(217,70,239,0.15) 0%, rgba(168,85,247,0.1) 100%);
  border-color: rgba(217,70,239,0.5);
  color: #ec4899;
  animation: tp-pulse 2s ease-in-out infinite;
}

.tp-play-btn.playing:hover {
  border-color: rgba(217,70,239,0.8);
  box-shadow: 0 0 20px rgba(217,70,239,0.25);
}

@keyframes tp-pulse {
  0%, 100% { box-shadow: 0 0 12px rgba(217,70,239,0.2); }
  50% { box-shadow: 0 0 24px rgba(217,70,239,0.4), 0 0 40px rgba(217,70,239,0.15); }
}

.tp-btn-icon {
  font-size: 1.1rem;
}

/* ── Volume Control ── */
.tp-control-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(26,15,46,0.5);
  border: 1px solid rgba(251,191,36,0.1);
  border-radius: 10px;
  padding: 0.7rem 1rem;
}

.tp-ctrl-label {
  font-size: 0.8rem;
  color: var(--tp-dim);
  white-space: nowrap;
  min-width: 70px;
}

.tp-slider {
  flex: 1;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: linear-gradient(to right, var(--tp-gold) 0%, var(--tp-gold) var(--val, 80%), rgba(251,191,36,0.15) var(--val, 80%));
  border-radius: 99px;
  outline: none;
  cursor: pointer;
}

.tp-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--tp-gold);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 6px rgba(251,191,36,0.5);
  transition: box-shadow 0.2s;
}

.tp-slider::-webkit-slider-thumb:hover {
  box-shadow: 0 0 12px rgba(251,191,36,0.7);
}

.tp-ctrl-val {
  font-size: 0.75rem;
  color: var(--tp-gold);
  font-weight: 600;
  min-width: 36px;
  text-align: right;
}

/* ── Pitch Section ── */
.tp-pitch-section {
  background: rgba(26,15,46,0.5);
  border: 1px solid var(--tp-border);
  border-radius: 14px;
  padding: 1rem;
}

.tp-pitch-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}

.tp-pitch-label > span:first-child {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--tp-text);
  letter-spacing: 0.04em;
}

.tp-pitch-hint {
  font-size: 0.68rem;
  color: var(--tp-dim2);
  font-style: italic;
}

.tp-pitch-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.tp-pitch-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 0.5rem 0.25rem;
  background: rgba(15,8,30,0.8);
  border: 1px solid rgba(251,191,36,0.12);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--tp-dim);
  font-family: 'Outfit', sans-serif;
}

.tp-pitch-btn:hover {
  border-color: rgba(251,191,36,0.35);
  background: rgba(251,191,36,0.06);
  color: var(--tp-text);
  transform: translateY(-1px);
}

.tp-pitch-btn.active {
  background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(245,158,11,0.08));
  border-color: rgba(251,191,36,0.55);
  color: var(--tp-gold);
  box-shadow: 0 0 10px rgba(251,191,36,0.15);
}

.tp-pitch-note {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-family: 'Cinzel', serif;
}

.tp-pitch-swar {
  font-size: 0.6rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
}

/* ── Tips ── */
.tp-tips {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.85rem 1rem;
  background: rgba(251,191,36,0.03);
  border: 1px solid rgba(251,191,36,0.08);
  border-radius: 10px;
}

.tp-tip-item {
  font-size: 0.75rem;
  color: var(--tp-dim2);
  line-height: 1.5;
}

/* ── Mobile Responsive ── */
@media (max-width: 480px) {
  .tp-header {
    padding: 1rem;
  }

  .tp-body {
    padding: 1rem;
    gap: 1rem;
  }

  .tp-pitch-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .tp-title {
    font-size: 1.1rem;
  }

  .tp-note-big {
    font-size: 1.25rem;
  }

  .tp-play-btn {
    padding: 0.75rem 2rem;
    font-size: 0.92rem;
  }

  .tp-strings-wrap {
    display: none; /* Conserve space on very small screens */
  }

  .tp-file-info {
    display: none;
  }

  .tp-tips {
    display: none;
  }
}

@media (max-width: 360px) {
  .tp-pitch-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ── Back Button ── */
.tp-back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: rgba(251,191,36,0.08);
  border: 1px solid rgba(251,191,36,0.22);
  border-radius: 50%;
  color: var(--tp-gold);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
  margin-right: 0.5rem;
}

.tp-back-btn:hover {
  background: rgba(251,191,36,0.18);
  border-color: rgba(251,191,36,0.55);
  box-shadow: 0 0 10px rgba(251,191,36,0.2);
  transform: translateX(-2px);
}

.tp-back-btn:active {
  transform: translateX(-1px) scale(0.95);
}