@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Share+Tech+Mono&display=swap');

/* ===== RESET & VARIABLES ===== */

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

:root {
  --bg:            #060610;
  --bg2:           #0a0a1a;
  --bg3:           #0f0f22;
  --panel-bg:      rgba(10, 10, 26, 0.92);
  --border:        rgba(120, 60, 200, 0.25);
  --border-bright: rgba(180, 80, 255, 0.5);
  --text:          #d8caf0;
  --text-dim:      #9e8fc0;
  --text-bright:   #f0e8ff;
  --accent:        #cc44ff;
  --accent2:       #44ccff;
  --accent3:       #ffcc44;
  --glow:          rgba(160, 60, 255, 0.4);
  --font-display:  'Orbitron', monospace;
  --font-mono:     'Share Tech Mono', monospace;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  min-height: 100vh;
  overflow-x: hidden;
}


/* ===== CRT SCANLINES ===== */

#scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.15) 2px,
    rgba(0, 0, 0, 0.15) 4px
  );
  animation: scanRoll 8s linear infinite;
}

@keyframes scanRoll {
  from { background-position: 0 0; }
  to   { background-position: 0 100vh; }
}


/* ===== LAYOUT ===== */

#app {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 0 4rem;
}


/* ===== HEADER ===== */

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

header::after {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin-top: 1rem;
  opacity: 0.4;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 4vw, 1.8rem);
  font-weight: 900;
  letter-spacing: 0.15em;
  background: linear-gradient(135deg, #ff66ff, #aa44ff, #44aaff, #ffcc44);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradShift 6s ease infinite;
  filter: drop-shadow(0 0 20px rgba(180, 80, 255, 0.4));
}

@keyframes gradShift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

.subtitle {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin-top: 0.4rem;
}

.attribution {
  text-align: center;
  font-size: 0.62rem;
  color: var(--text-dim);
  padding: 0.4rem 1rem 0.5rem;
  margin-top: -0.1rem;
}

.attribution a {
  color: var(--text-dim);
  text-decoration: underline;
  text-decoration-color: rgba(158, 143, 192, 0.4);
}

.attribution a:hover {
  color: var(--text);
}


/* ===== STAGE & CANVAS ===== */

#stage {
  position: relative;
  width: 100%;
  height: min(60vw, 460px);
  overflow: hidden;
}

#viz {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#btn-wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
}


/* ===== PLAY BUTTON ===== */

#play-btn {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  position: relative;
  background: radial-gradient(circle at 38% 35%,
    rgba(200, 120, 255, 0.9) 0%,
    rgba(100, 30, 180, 0.85) 45%,
    rgba(30, 10, 80, 0.95) 100%
  );
  outline: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.06s cubic-bezier(0.22, 0.61, 0.36, 1);
}

#play-btn::before {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: conic-gradient(
    hsl(0,100%,65%), hsl(40,100%,65%), hsl(80,100%,65%),
    hsl(120,100%,65%), hsl(180,100%,65%), hsl(220,100%,65%),
    hsl(270,100%,65%), hsl(320,100%,65%), hsl(0,100%,65%)
  );
  animation: spinRing 4s linear infinite;
  z-index: -1;
  opacity: 0.7;
}

@keyframes spinRing {
  to { transform: rotate(360deg); }
}

#play-btn::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--bg);
  z-index: -1;
}

#play-btn:hover {
  box-shadow:
    0 0 30px rgba(200, 80, 255, 0.7),
    0 0 70px rgba(180, 60, 255, 0.35),
    inset 0 0 40px rgba(255, 200, 255, 0.12);
  transform: scale(1.04);
}

#play-btn:active,
#play-btn.pressed {
  transform: scale(0.93);
  background: radial-gradient(circle at 38% 35%,
    rgba(255, 180, 255, 1) 0%,
    rgba(160, 60, 255, 0.95) 45%,
    rgba(60, 20, 120, 1) 100%
  );
  box-shadow:
    0 0 50px rgba(255, 100, 255, 0.9),
    0 0 120px rgba(200, 60, 255, 0.5),
    0 0 200px rgba(180, 40, 255, 0.2),
    inset 0 0 60px rgba(255, 255, 255, 0.25);
}

.btn-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 100%;
  pointer-events: none;
}

.btn-label {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  color: rgba(255, 220, 255, 0.95);
  text-shadow:
    0 0 10px rgba(255, 200, 255, 0.8),
    0 0 30px rgba(200, 100, 255, 0.5);
}

.btn-sub {
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  color: rgba(200, 160, 255, 0.6);
  transition: opacity 0.15s ease;
}

.btn-sub.fade-swap { opacity: 0; }

body.hold-active #play-btn.pressed,
body.hold-active #play-btn.held {
  transform: scale(0.96);
  box-shadow:
    0 0 40px rgba(255, 100, 255, 0.8),
    0 0 100px rgba(200, 60, 255, 0.45),
    inset 0 0 50px rgba(255, 255, 255, 0.2);
}


/* ===== QUICK CONTROLS ===== */

#quick-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem;
  flex-wrap: wrap;
}

.toggle-btn, .action-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 0.5rem 1rem;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.15s ease;
  outline: none;
  white-space: nowrap;
}

.toggle-btn {
  background: rgba(60, 20, 100, 0.5);
  border: 1px solid var(--border);
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toggle-btn .tgl-label { color: var(--text-dim); }
.toggle-btn .tgl-state { color: rgba(100, 60, 140, 0.8); font-size: 0.65rem; }

.toggle-btn[data-active="true"] {
  background: rgba(150, 50, 255, 0.25);
  border-color: var(--accent);
  color: var(--text-bright);
  box-shadow: 0 0 12px rgba(180, 60, 255, 0.35), inset 0 0 8px rgba(180, 60, 255, 0.1);
}

.toggle-btn[data-active="true"] .tgl-label { color: var(--text-bright); }
.toggle-btn[data-active="true"] .tgl-state { color: var(--accent); }
.toggle-btn:hover { border-color: var(--border-bright); color: var(--text); }

.auto-toggle[data-active="true"] {
  background: rgba(255, 180, 20, 0.12);
  border-color: var(--accent3);
  box-shadow: 0 0 12px rgba(255, 180, 20, 0.25), inset 0 0 8px rgba(255, 180, 20, 0.08);
}

.auto-toggle[data-active="true"] .tgl-label,
.auto-toggle[data-active="true"] .tgl-state { color: var(--accent3); }

.action-btn {
  background: rgba(40, 15, 80, 0.6);
  border: 1px solid var(--border);
  color: var(--text);
}

.action-btn:hover {
  border-color: var(--accent);
  color: var(--text-bright);
  box-shadow: 0 0 10px rgba(180, 60, 255, 0.3);
}

.action-btn:active { transform: scale(0.97); }


/* ===== SETTINGS PANEL ===== */

#settings-panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
  border-top: 1px solid transparent;
}

#settings-panel[data-open="true"] {
  max-height: 1200px;
  border-top-color: var(--border);
}

.settings-toggle.open {
  border-color: var(--accent);
  color: var(--accent);
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0;
  padding: 1.5rem 1rem;
  background: var(--panel-bg);
}

.panel-section {
  padding: 1rem;
  border-right: 1px solid var(--border);
}

.panel-section:last-child { border-right: none; }

.panel-section h3 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--text-bright);
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.ctrl-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.ctrl-row label {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--text);
  white-space: nowrap;
  min-width: 40px;
}

.ctrl-row select {
  flex: 1;
  background: rgba(30, 15, 60, 0.7);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  border-radius: 2px;
  cursor: pointer;
  outline: none;
}

.ctrl-row select:focus { border-color: var(--accent); }

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.slider-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.slider-row label {
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--text);
  display: flex;
  justify-content: space-between;
}

.slider-row .val {
  color: var(--accent);
  font-size: 0.62rem;
}

.slider-row input[type="range"] {
  width: 100%;
  height: 3px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(100, 50, 180, 0.3);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.slider-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--glow);
  cursor: pointer;
}

.slider-row input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--glow);
  cursor: pointer;
  border: none;
}

.slider-row input[type="range"]:focus::-webkit-slider-thumb {
  box-shadow: 0 0 10px var(--accent), 0 0 20px var(--glow);
}


/* ===== SETTINGS: INLINE ELEMENTS ===== */

.root-note-sel { flex: 2; }
.octave-sel    { flex: 1; }

#note-div-select {
  max-width: 105px;
  flex: none;
}

.eq-group-label {
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  opacity: 0.7;
  margin: 0.5rem 0 0.15rem;
  padding-top: 0.35rem;
  border-top: 1px solid rgba(120, 60, 200, 0.2);
}

.eq-group-label:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.toggle-row {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.toggle-hint {
  font-size: 0.6rem;
  color: var(--text-dim);
  font-style: italic;
}


/* ===== PICKED NOTES (random mode) ===== */

.picked-notes {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  margin-top: 0.35rem;
  flex-wrap: wrap;
}

.picked-note-list {
  display: contents;
}

.picked-note {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  padding: 0.12rem 0.35rem;
  background: rgba(150, 50, 255, 0.12);
  border: 1px solid rgba(150, 60, 255, 0.3);
  border-radius: 2px;
  color: var(--accent);
}

.picked-dice-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 2px;
  cursor: pointer;
  font-size: 0.65rem;
  padding: 0.1rem 0.3rem;
  transition: all 0.15s;
  line-height: 1;
}

.picked-dice-btn:hover {
  border-color: var(--accent);
  background: rgba(150, 50, 255, 0.15);
}


/* ===== RECENT PLAYS ===== */

#recent-plays {
  padding: 1.25rem 1rem;
  border-top: 1px solid var(--border);
}

.bank-hint {
  font-size: 0.62rem;
  color: var(--text-dim);
  font-style: italic;
}

#recent-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.recent-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(15, 8, 35, 0.7);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.45rem 0.75rem;
  transition: border-color 0.15s;
}

.recent-card:hover { border-color: var(--border-bright); }

.recent-info { flex: 1; min-width: 0; }

.recent-name {
  display: block;
  font-size: 0.78rem;
  color: var(--text-bright);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.recent-meta {
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-top: 1px;
}

.recent-actions {
  display: flex;
  gap: 0.35rem;
  flex-shrink: 0;
}

.recent-play-btn,
.recent-load-btn,
.recent-save-btn {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  padding: 0.25rem 0.55rem;
  border-radius: 2px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  transition: all 0.15s;
  outline: none;
}

.recent-play-btn {
  color: var(--accent);
  border-color: rgba(150, 60, 255, 0.5);
}

.recent-play-btn:hover {
  background: rgba(150, 50, 255, 0.2);
  border-color: var(--accent);
}

.recent-load-btn {
  color: var(--accent);
  border-color: rgba(150, 60, 255, 0.35);
  font-size: 0.55rem;
  letter-spacing: 0.06em;
}

.recent-load-btn:hover {
  background: rgba(150, 50, 255, 0.15);
  border-color: var(--accent);
}

.recent-save-btn { color: var(--text-dim); }

.recent-save-btn:hover {
  color: var(--text);
  border-color: var(--border-bright);
}


/* ===== SAVED SOUNDS ===== */

#sound-bank {
  padding: 1.5rem 1rem;
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}

.bank-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}

.bank-header h2 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}

.bank-count {
  font-size: 0.65rem;
  color: rgba(100, 60, 160, 0.7);
}

#favorites-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.empty-bank {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
  grid-column: 1 / -1;
  padding: 1rem 0;
}

.sound-card {
  background: rgba(20, 10, 45, 0.7);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.75rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sound-card:hover {
  border-color: var(--border-bright);
  box-shadow: 0 0 12px rgba(160, 60, 255, 0.2);
}

.sound-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.35rem;
}

.sound-name {
  flex: 1;
  font-size: 0.8rem;
  color: var(--text-bright);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sound-icon-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.75rem;
  padding: 2px 4px;
  border-radius: 2px;
  opacity: 0.6;
  transition: opacity 0.15s, color 0.15s;
}

.sound-icon-btn:hover { opacity: 1; color: var(--text); }

.sound-meta {
  font-size: 0.62rem;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.sound-actions {
  display: flex;
  gap: 0.4rem;
}

.sound-play-btn, .sound-load-btn {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.6rem;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.15s;
  outline: none;
}

.sound-play-btn {
  background: rgba(150, 50, 255, 0.2);
  border: 1px solid var(--accent);
  color: var(--accent);
  flex: 1;
}

.sound-play-btn:hover {
  background: rgba(150, 50, 255, 0.35);
  box-shadow: 0 0 8px rgba(180, 60, 255, 0.3);
}

.sound-load-btn {
  background: rgba(40, 15, 80, 0.5);
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.sound-load-btn:hover {
  border-color: var(--border-bright);
  color: var(--text);
}


/* ===== TOAST ===== */

#toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  background: rgba(30, 10, 70, 0.95);
  border: 1px solid var(--accent);
  color: var(--text-bright);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  padding: 0.6rem 1.2rem;
  border-radius: 3px;
  box-shadow: 0 0 20px rgba(180, 60, 255, 0.4);
  z-index: 2000;
  transition: transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.3s;
  opacity: 0;
  pointer-events: none;
}

#toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}


/* ===== SCROLLBAR ===== */

::-webkit-scrollbar       { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(120, 50, 200, 0.4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(160, 70, 255, 0.6); }