/* ============================================================
   HAVANA BEAT — Cigar Lounge Drum Machine
   Rich Wood, Brass, Leather & Amber Theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700;900&family=Rajdhani:wght@400;500;600;700&family=Special+Elite&display=swap');

:root {
  --wood-dark:      #2C1A0E;
  --wood-mid:       #4A2C17;
  --walnut:         #3D1F0D;
  --mahogany:       #5C2E0A;
  --brass:          #B8860B;
  --brass-light:    #D4A017;
  --brass-shine:    #F0C040;
  --brass-dark:     #8B6914;
  --amber:          #FFBF00;
  --amber-glow:     rgba(255,191,0,0.15);
  --cream:          #F5E6C8;
  --pad-off:        #1A0F07;
  --pad-on:         #D4A017;
  --pad-active:     #FFD700;
  --pad-glow:       rgba(212,160,23,0.6);
  --mute-color:     #8B0000;
  --solo-color:     #1A5C1A;
  --text-primary:   #F5E6C8;
  --text-dim:       #A08060;
  --shadow-deep:    0 8px 32px rgba(0,0,0,0.8);
  --shadow-brass:   0 0 12px rgba(184,134,11,0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  width: 100%; min-height: 100vh;
  font-family: 'Rajdhani', sans-serif;
  color: var(--text-primary);
  overflow-x: hidden;
}

body {
  background-image:
    repeating-linear-gradient(92deg, transparent 0px, transparent 3px, rgba(0,0,0,0.08) 3px, rgba(0,0,0,0.08) 4px),
    repeating-linear-gradient(180deg, transparent 0px, transparent 8px, rgba(255,255,255,0.015) 8px, rgba(255,255,255,0.015) 9px),
    linear-gradient(160deg, #3D1F0D 0%, #2C1A0E 40%, #1A0F07 100%);
}

#app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

/* ── HEADER ── */
#machine-header {
  background:
    repeating-linear-gradient(88deg, rgba(0,0,0,0.12) 0px, rgba(0,0,0,0.12) 2px, transparent 2px, transparent 6px),
    linear-gradient(180deg, #5C2E0A 0%, #3D1F0D 60%, #2C1A0E 100%);
  border: 2px solid var(--brass-dark);
  border-radius: 12px 12px 0 0;
  padding: 20px 28px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: var(--shadow-deep), var(--shadow-brass);
  position: relative;
  overflow: hidden;
}
#machine-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--brass-shine), var(--brass), var(--brass-shine), transparent);
}

#brand { display: flex; align-items: center; gap: 14px; }
.brand-icon { font-size: 2rem; filter: drop-shadow(0 0 6px var(--amber)); }
.brand-text h1 {
  font-family: 'Playfair Display', serif;
  font-size: 2.2rem; font-weight: 900;
  color: var(--brass-shine);
  letter-spacing: 6px;
  text-shadow: 0 0 20px var(--amber), 0 2px 4px rgba(0,0,0,0.8);
  line-height: 1;
}
.brand-text .subtitle {
  font-family: 'Special Elite', cursive;
  font-size: 0.75rem; color: var(--text-dim);
  letter-spacing: 4px; text-transform: uppercase; margin-top: 2px;
}

/* ── Transport ── */
#transport { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.transport-group { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.transport-group label { font-size: 0.6rem; letter-spacing: 2px; color: var(--brass); text-transform: uppercase; font-weight: 600; }
.transport-group > span { font-size: 0.7rem; color: var(--text-dim); }

.bpm-control {
  display: flex; align-items: center; gap: 6px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--brass-dark);
  border-radius: 6px; padding: 4px 8px;
}
#bpm-display {
  font-family: 'Rajdhani', monospace;
  font-size: 1.5rem; font-weight: 700;
  color: var(--brass-shine); min-width: 44px; text-align: center;
  text-shadow: 0 0 10px var(--amber);
}

.transport-btn {
  background: var(--wood-mid);
  border: 1px solid var(--brass-dark);
  color: var(--brass-shine);
  width: 26px; height: 26px;
  border-radius: 4px; cursor: pointer;
  font-size: 1.1rem; font-weight: 700;
  transition: all 0.15s;
  display: flex; align-items: center; justify-content: center;
}
.transport-btn:hover { background: var(--brass-dark); color: var(--cream); }

.knob-slider {
  -webkit-appearance: none;
  width: 100px; height: 6px;
  background: linear-gradient(90deg, var(--brass-dark), var(--brass-light));
  border-radius: 3px; outline: none; cursor: pointer;
}
.knob-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, var(--brass-shine), var(--brass-dark));
  border: 2px solid var(--brass);
  box-shadow: 0 0 6px var(--amber);
  cursor: pointer;
}

.transport-buttons { flex-direction: row; gap: 8px; }
.play-btn, .stop-btn, .clear-btn {
  padding: 8px 16px;
  border-radius: 6px; border: none; cursor: pointer;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.85rem; font-weight: 700; letter-spacing: 1px;
  transition: all 0.15s;
}
.play-btn  { background: linear-gradient(135deg, #1A5C1A, #0D3D0D); color: #90EE90; border: 1px solid #2E8B2E; }
.stop-btn  { background: linear-gradient(135deg, #5C1A1A, #3D0D0D); color: #FFB0B0; border: 1px solid #8B2E2E; }
.clear-btn { background: linear-gradient(135deg, var(--wood-mid), var(--wood-dark)); color: var(--text-dim); border: 1px solid var(--brass-dark); }
.play-btn:hover  { background: linear-gradient(135deg, #2E8B2E, #1A5C1A); box-shadow: 0 0 12px rgba(0,200,0,0.4); }
.stop-btn:hover  { background: linear-gradient(135deg, #8B2E2E, #5C1A1A); box-shadow: 0 0 12px rgba(200,0,0,0.4); }
.clear-btn:hover { background: linear-gradient(135deg, var(--mahogany), var(--wood-mid)); color: var(--cream); }
.play-btn.active { background: linear-gradient(135deg, #2E8B2E, #1A5C1A); box-shadow: 0 0 16px rgba(0,255,0,0.5); }

/* ── STEP INDICATOR BAR ── */
#step-indicator-bar {
  background: linear-gradient(180deg, #1A0F07 0%, #0D0804 100%);
  border-left: 2px solid var(--brass-dark);
  border-right: 2px solid var(--brass-dark);
  padding: 8px 16px;
  display: flex; align-items: center; gap: 12px;
}
.step-indicator-label {
  font-size: 0.6rem; letter-spacing: 3px; color: var(--brass-dark);
  text-transform: uppercase; min-width: 36px;
}
#step-indicators {
  display: flex; gap: 6px; flex: 1;
}
.step-ind {
  flex: 1; height: 24px;
  background: rgba(0,0,0,0.5);
  border: 1px solid var(--brass-dark);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.65rem; color: var(--text-dim);
  transition: all 0.08s;
}
.step-ind.active {
  background: var(--brass-light);
  border-color: var(--brass-shine);
  color: var(--wood-dark);
  box-shadow: 0 0 10px var(--amber), 0 0 20px rgba(255,191,0,0.3);
  font-weight: 700;
}
.beat-dividers {
  display: flex; gap: 24px;
  font-size: 0.8rem; color: var(--brass-dark);
  opacity: 0.5;
}

/* ── SEQUENCER ── */
#sequencer {
  background:
    repeating-linear-gradient(180deg, rgba(0,0,0,0.15) 0px, rgba(0,0,0,0.15) 1px, transparent 1px, transparent 60px),
    linear-gradient(180deg, #1A0F07 0%, #0D0804 100%);
  border-left: 2px solid var(--brass-dark);
  border-right: 2px solid var(--brass-dark);
  padding: 8px 0;
}

/* ── INSTRUMENT ROW ── */
.instrument-row {
  display: flex; align-items: center;
  padding: 6px 16px; gap: 10px;
  border-bottom: 1px solid rgba(184,134,11,0.1);
  transition: background 0.2s;
}
.instrument-row:hover { background: rgba(184,134,11,0.04); }
.instrument-row.muted { opacity: 0.4; }
.instrument-row.soloed .row-label { color: #90EE90; text-shadow: 0 0 8px #00FF00; }

.row-label {
  min-width: 90px;
  font-family: 'Special Elite', cursive;
  font-size: 0.8rem; color: var(--cream);
  letter-spacing: 1px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.row-controls {
  display: flex; align-items: center; gap: 6px;
  min-width: 160px;
}

.vol-slider {
  -webkit-appearance: none;
  width: 70px; height: 4px;
  background: linear-gradient(90deg, var(--brass-dark), var(--brass-light));
  border-radius: 2px; outline: none; cursor: pointer;
}
.vol-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px; border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, var(--brass-shine), var(--brass-dark));
  border: 1px solid var(--brass); cursor: pointer;
}
.vol-label {
  font-size: 0.65rem; color: var(--text-dim);
  min-width: 28px; text-align: right;
}

.mute-btn, .solo-btn {
  width: 28px; height: 22px;
  border-radius: 4px; border: 1px solid;
  font-size: 0.6rem; font-weight: 700; letter-spacing: 0.5px;
  cursor: pointer; transition: all 0.15s;
  font-family: 'Rajdhani', sans-serif;
}
.mute-btn {
  background: rgba(139,0,0,0.2);
  border-color: #8B0000; color: #FF6666;
}
.mute-btn:hover, .mute-btn.active {
  background: #8B0000; color: #FFD0D0;
  box-shadow: 0 0 8px rgba(200,0,0,0.5);
}
.solo-btn {
  background: rgba(26,92,26,0.2);
  border-color: #1A5C1A; color: #66CC66;
}
.solo-btn:hover, .solo-btn.active {
  background: #1A5C1A; color: #D0FFD0;
  box-shadow: 0 0 8px rgba(0,200,0,0.5);
}

/* ── STEP PADS ── */
.step-pads {
  display: flex; gap: 6px; flex: 1;
}
.pad {
  flex: 1; height: 38px;
  background: radial-gradient(ellipse at 50% 30%, #2A1A0A, #0D0804);
  border: 1px solid #3A2510;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.1s;
  position: relative;
  overflow: hidden;
}
.pad::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 20%, rgba(255,255,255,0.06), transparent 60%);
  pointer-events: none;
}
.pad:hover {
  border-color: var(--brass-dark);
  background: radial-gradient(ellipse at 50% 30%, #3A2510, #1A0F07);
}
.pad.on {
  background: radial-gradient(ellipse at 50% 30%, var(--brass-light), var(--brass-dark));
  border-color: var(--brass-shine);
  box-shadow: 0 0 10px var(--pad-glow), inset 0 1px 0 rgba(255,255,255,0.2);
}
.pad.on::after {
  background: radial-gradient(ellipse at 50% 20%, rgba(255,255,255,0.15), transparent 60%);
}
.pad.playing {
  background: radial-gradient(ellipse at 50% 30%, var(--pad-active), var(--brass-light)) !important;
  border-color: #FFE066 !important;
  box-shadow: 0 0 18px rgba(255,215,0,0.8), inset 0 1px 0 rgba(255,255,255,0.3) !important;
  transform: scale(0.96);
}

/* ── RECORD PANEL ── */
#record-panel {
  background:
    repeating-linear-gradient(88deg, rgba(0,0,0,0.1) 0px, rgba(0,0,0,0.1) 2px, transparent 2px, transparent 8px),
    linear-gradient(180deg, #2C1A0E 0%, #1A0F07 100%);
  border: 2px solid var(--brass-dark);
  border-top: none;
  border-radius: 0 0 12px 12px;
  padding: 20px 24px;
  box-shadow: var(--shadow-deep);
  position: relative;
}
#record-panel::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--brass-dark), transparent);
}

#record-panel-header {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  margin-bottom: 16px;
}
#record-panel-header h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem; font-weight: 700;
  color: var(--brass-light); letter-spacing: 4px;
  text-shadow: 0 0 10px var(--amber);
}
.panel-icon { font-size: 1.2rem; }

#record-controls {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  margin-bottom: 16px;
}

#instrument-select-group {
  display: flex; flex-direction: column; gap: 4px;
}
#instrument-select-group label {
  font-size: 0.6rem; letter-spacing: 2px; color: var(--brass); text-transform: uppercase;
}
#instrument-select {
  background: rgba(0,0,0,0.5);
  border: 1px solid var(--brass-dark);
  color: var(--cream);
  padding: 6px 10px; border-radius: 6px;
  font-family: 'Rajdhani', sans-serif; font-size: 0.85rem;
  cursor: pointer; outline: none;
}
#instrument-select:focus { border-color: var(--brass-light); }

#record-buttons { display: flex; gap: 8px; align-items: center; }

.rec-btn {
  background: linear-gradient(135deg, #6B0000, #3D0000);
  border: 1px solid #CC0000; color: #FF8080;
  padding: 8px 16px; border-radius: 6px; cursor: pointer;
  font-family: 'Rajdhani', sans-serif; font-size: 0.85rem; font-weight: 700;
  letter-spacing: 1px; transition: all 0.15s;
}
.rec-btn:hover { background: linear-gradient(135deg, #CC0000, #6B0000); box-shadow: 0 0 14px rgba(255,0,0,0.5); }
.rec-btn.recording { animation: rec-pulse 1s infinite; }
@keyframes rec-pulse {
  0%, 100% { box-shadow: 0 0 8px rgba(255,0,0,0.5); }
  50% { box-shadow: 0 0 20px rgba(255,0,0,0.9); }
}

.rec-stop-btn {
  background: linear-gradient(135deg, var(--wood-mid), var(--wood-dark));
  border: 1px solid var(--brass-dark); color: var(--text-dim);
  padding: 8px 16px; border-radius: 6px; cursor: pointer;
  font-family: 'Rajdhani', sans-serif; font-size: 0.85rem; font-weight: 700;
  letter-spacing: 1px; transition: all 0.15s;
}
.rec-stop-btn:not(:disabled):hover { background: var(--mahogany); color: var(--cream); }
.rec-stop-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.rec-play-btn {
  background: linear-gradient(135deg, #1A3D1A, #0D200D);
  border: 1px solid #2E6B2E; color: #90EE90;
  padding: 8px 16px; border-radius: 6px; cursor: pointer;
  font-family: 'Rajdhani', sans-serif; font-size: 0.85rem; font-weight: 700;
  letter-spacing: 1px; transition: all 0.15s;
}
.rec-play-btn:not(:disabled):hover { background: linear-gradient(135deg, #2E6B2E, #1A3D1A); box-shadow: 0 0 10px rgba(0,200,0,0.4); }
.rec-play-btn:disabled { opacity: 0.4; cursor: not-allowed; }

#record-status {
  display: flex; align-items: center; gap: 10px;
  background: rgba(0,0,0,0.4); border: 1px solid var(--brass-dark);
  border-radius: 6px; padding: 6px 12px;
}
#rec-indicator {
  width: 10px; height: 10px; border-radius: 50%;
  background: #333; border: 1px solid #555;
  transition: all 0.3s;
}
#rec-indicator.active { background: #FF0000; box-shadow: 0 0 8px #FF0000; animation: rec-pulse 1s infinite; }
#rec-status-text { font-size: 0.8rem; color: var(--text-dim); letter-spacing: 1px; }
#rec-timer { font-family: 'Rajdhani', monospace; font-size: 1rem; color: var(--brass-light); font-weight: 700; margin-left: auto; }

/* ── WAVEFORM ── */
#waveform-section { margin-top: 8px; }

#waveform-container {
  position: relative;
  background: #050302;
  border: 1px solid var(--brass-dark);
  border-radius: 8px;
  overflow: hidden;
  height: 100px;
  margin-bottom: 10px;
}
#waveform-canvas {
  width: 100%; height: 100%;
  display: block;
}

#trim-handles {
  position: absolute; inset: 0;
  pointer-events: none;
}
.trim-handle {
  position: absolute; top: 0; bottom: 0;
  width: 4px;
  background: var(--brass-shine);
  cursor: ew-resize;
  pointer-events: all;
  z-index: 10;
  box-shadow: 0 0 8px var(--amber);
}
.trim-handle::before {
  content: '◆';
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  color: var(--brass-shine); font-size: 0.7rem;
}
#trim-start { left: 0; border-radius: 2px 0 0 2px; }
#trim-end   { right: 0; border-radius: 0 2px 2px 0; }
#trim-region {
  position: absolute; top: 0; bottom: 0;
  background: rgba(212,160,23,0.12);
  border-top: 1px solid rgba(212,160,23,0.3);
  border-bottom: 1px solid rgba(212,160,23,0.3);
  pointer-events: none;
}

#waveform-labels {
  position: absolute; bottom: 4px; left: 0; right: 0;
  display: flex; justify-content: space-between;
  padding: 0 8px; pointer-events: none;
}
#waveform-labels span {
  font-size: 0.6rem; color: var(--brass-light);
  background: rgba(0,0,0,0.6); padding: 1px 4px; border-radius: 3px;
}

#trim-controls { display: flex; gap: 10px; flex-wrap: wrap; }
.trim-btn, .assign-btn {
  padding: 7px 16px; border-radius: 6px; cursor: pointer;
  font-family: 'Rajdhani', sans-serif; font-size: 0.82rem; font-weight: 700;
  letter-spacing: 1px; transition: all 0.15s;
}
.trim-btn {
  background: linear-gradient(135deg, var(--wood-mid), var(--wood-dark));
  border: 1px solid var(--brass-dark); color: var(--brass-light);
}
.trim-btn:not(:disabled):hover { background: var(--mahogany); color: var(--cream); }
.trim-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.assign-btn {
  background: linear-gradient(135deg, #1A3D5C, #0D2030);
  border: 1px solid #2E6B8B; color: #90D0FF;
}
.assign-btn:not(:disabled):hover { background: linear-gradient(135deg, #2E6B8B, #1A3D5C); box-shadow: 0 0 10px rgba(0,150,255,0.4); }
.assign-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── FOOTER ── */
#machine-footer {
  margin-top: 0;
  background: linear-gradient(180deg, #1A0F07, #0D0804);
  border: 2px solid var(--brass-dark);
  border-top: 1px solid rgba(184,134,11,0.3);
  border-radius: 0 0 12px 12px;
  padding: 12px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.footer-wood-grain {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    92deg,
    transparent 0px, transparent 4px,
    rgba(0,0,0,0.06) 4px, rgba(0,0,0,0.06) 5px
  );
}
#machine-footer p {
  font-family: 'Special Elite', cursive;
  font-size: 0.7rem; color: var(--brass-dark);
  letter-spacing: 3px; text-transform: uppercase;
  position: relative; z-index: 1;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--wood-dark); }
::-webkit-scrollbar-thumb { background: var(--brass-dark); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--brass); }

/* ── RESPONSIVE ── */
@media (max-width: 700px) {
  .brand-text h1 { font-size: 1.4rem; letter-spacing: 3px; }
  #transport { gap: 10px; }
  .knob-slider { width: 70px; }
  .row-label { min-width: 60px; font-size: 0.7rem; }
  .row-controls { min-width: 120px; }
  .vol-slider { width: 50px; }
  .pad { height: 30px; }
}