:root {
  --bg: #0d0d1a;
  --bg-light: #161630;
  --bg-lighter: #1e1e40;
  --surface: #1a1a30;
  --surface-light: #252545;
  --border: #3a3a5c;
  --text: #e0e0e0;
  --text-dim: #888;
  --purple: #7b68ee;
  --purple-light: #9370db;
  --purple-dark: #5b48ce;
  --purple-glow: rgba(123, 104, 238, 0.4);
  --green: #00ff88;
  --red: #ff3366;
  --orange: #ff6b35;
  --knob-size-sm: 40px;
  --knob-size-md: 56px;
  --knob-size-lg: 72px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, 'Segoe UI', sans-serif;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ===== HEADER ===== */
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background: linear-gradient(180deg, #12122a 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 8px;
}

.header-left { display: flex; align-items: baseline; gap: 12px; }

.logo {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--purple);
  text-shadow: 0 0 20px var(--purple-glow);
}

.patch-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--purple-light);
  letter-spacing: 1px;
  font-family: 'Courier New', monospace;
  padding: 2px 8px;
  background: rgba(139, 92, 246, 0.1);
  border-radius: 4px;
  min-width: 120px;
  text-align: center;
}

.subtitle { font-size: 11px; color: var(--text-dim); letter-spacing: 2px; text-transform: uppercase; }

.patch-name.status-flash {
  color: #4ade80;
  animation: flash-fade 0.3s ease;
}
@keyframes flash-fade {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

.header-center { display: flex; align-items: center; gap: 8px; }

.midi-panel { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.midi-select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  max-width: 160px;
}

.midi-btn {
  background: var(--surface-light);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.midi-btn:hover { background: var(--purple-dark); border-color: var(--purple); }
.midi-btn.accent-purple { border-color: var(--purple); color: var(--purple); }

.midi-status {
  width: 10px; height: 10px; border-radius: 50%; display: inline-block;
  transition: background 0.3s;
}
.midi-status.disconnected { background: #666; }
.midi-status.detecting { background: var(--orange); box-shadow: 0 0 6px var(--orange); }
.midi-status.connected { background: var(--green); box-shadow: 0 0 6px var(--green); }

.header-sep { width: 1px; height: 24px; background: var(--border); margin: 0 4px; }

/* ===== TABS ===== */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  background: var(--bg-light);
  overflow-x: auto;
}

.tab {
  padding: 10px 20px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}
.tab:hover { color: var(--text); background: rgba(123, 104, 238, 0.05); }
.tab.active { color: var(--purple); border-bottom-color: var(--purple); text-shadow: 0 0 10px var(--purple-glow); }

/* ===== CONTENT ===== */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ===== SECTION CARDS ===== */
.section-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--purple-light);
  margin-bottom: 16px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(123, 104, 238, 0.2);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 12px;
}
.controls-row.secondary { margin-top: 8px; }

/* ===== KNOBS ===== */
.knob-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  user-select: none;
}

.knob-label { font-size: 10px; color: var(--text-dim); letter-spacing: 1px; text-align: center; }

.knob {
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #3a3a5c, #1a1a30);
  border: 2px solid var(--border);
  position: relative;
  cursor: grab;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.knob:hover { border-color: var(--purple); box-shadow: 0 0 10px var(--purple-glow); }
.knob.active { cursor: grabbing; border-color: var(--purple); box-shadow: 0 0 15px var(--purple-glow); }

.knob.sm { width: var(--knob-size-sm); height: var(--knob-size-sm); }
.knob.md { width: var(--knob-size-md); height: var(--knob-size-md); }
.knob.lg { width: var(--knob-size-lg); height: var(--knob-size-lg); }

.knob-indicator {
  position: absolute;
  top: 6px;
  left: 50%;
  width: 2px;
  height: 35%;
  background: var(--purple);
  border-radius: 1px;
  transform-origin: bottom center;
  transform: translateX(-50%);
}

.knob-value { font-size: 11px; color: var(--purple-light); font-weight: 600; font-variant-numeric: tabular-nums; }

/* ===== FADERS ===== */
.fader-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  user-select: none;
}

.fader-label { font-size: 10px; color: var(--text-dim); letter-spacing: 1px; }

.fader-track {
  width: 6px;
  height: 120px;
  background: var(--bg-lighter);
  border-radius: 3px;
  position: relative;
  cursor: pointer;
}

.fader-fill {
  position: absolute;
  bottom: 0;
  width: 100%;
  background: linear-gradient(0deg, var(--purple-dark), var(--purple));
  border-radius: 3px;
}

.fader-thumb {
  position: absolute;
  left: -5px;
  width: 16px;
  height: 14px;
  background: var(--purple);
  border-radius: 3px;
  box-shadow: 0 0 6px var(--purple-glow);
}

.fader-value { font-size: 11px; color: var(--purple-light); font-weight: 600; }

/* ===== TOGGLES ===== */
.toggle-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.toggle-label { font-size: 10px; color: var(--text-dim); }

.toggle {
  width: 40px;
  height: 20px;
  background: var(--bg-lighter);
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  border: 1px solid var(--border);
  transition: background 0.2s;
}
.toggle.on { background: var(--purple-dark); border-color: var(--purple); }

.toggle-handle {
  width: 16px;
  height: 16px;
  background: var(--text);
  border-radius: 50%;
  position: absolute;
  top: 1px;
  left: 2px;
  transition: left 0.2s;
}
.toggle.on .toggle-handle { left: 21px; background: var(--purple); }

.toggle-state { font-size: 10px; color: var(--text-dim); }

/* ===== SELECTS ===== */
.select-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
}

.select-label { font-size: 10px; color: var(--text-dim); letter-spacing: 1px; }

.select-box {
  background: var(--surface-light);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 12px;
  color: var(--text);
  cursor: pointer;
  min-width: 80px;
  text-align: center;
}
.select-box:hover { border-color: var(--purple); }

.select-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--surface);
  border: 1px solid var(--purple-dark);
  border-radius: 4px;
  max-height: 200px;
  overflow-y: auto;
  z-index: 100;
  min-width: 100%;
}
.select-dropdown.open { display: block; }

.select-option {
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
}
.select-option:hover { background: var(--purple-dark); color: #fff; }

/* ===== LAYOUTS ===== */
.osc-grid, .filter-grid, .amp-grid, .mod-grid, .fx-grid, .arp-grid, .perf-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.inline-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.inline-cards .card { flex: 1; min-width: 280px; }

/* ===== 2x2 GRIDS for MOD tab ===== */
.eg-grid-2x2, .lfo-grid-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ===== EG Color Themes ===== */
.eg-card[data-eg-color="purple"] { border-color: rgba(123, 104, 238, 0.4); }
.eg-card[data-eg-color="blue"] { border-color: rgba(59, 130, 246, 0.4); }
.eg-card[data-eg-color="green"] { border-color: rgba(34, 197, 94, 0.4); }
.eg-card[data-eg-color="orange"] { border-color: rgba(251, 146, 60, 0.4); }

.eg-card[data-eg-color="blue"] .section-title { color: #60a5fa; border-bottom-color: rgba(59, 130, 246, 0.2); }
.eg-card[data-eg-color="green"] .section-title { color: #4ade80; border-bottom-color: rgba(34, 197, 94, 0.2); }
.eg-card[data-eg-color="orange"] .section-title { color: #fb923c; border-bottom-color: rgba(251, 146, 60, 0.2); }

/* ===== ADSR GRAPH ===== */
.adsr-graph { width: 100%; max-width: 300px; height: 80px; margin-bottom: 8px; cursor: pointer; }

/* ===== MONITOR ===== */
.monitor-container { display: flex; flex-direction: column; height: 100%; }

.monitor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  flex-wrap: wrap;
}

.mon-btn {
  background: var(--surface-light);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 11px;
  cursor: pointer;
}
.mon-btn.active { border-color: var(--purple); color: var(--purple); }

.mon-sep { color: var(--border); }
.mon-filter-label { font-size: 11px; color: var(--text-dim); cursor: pointer; }
.mon-count { font-size: 11px; color: var(--text-dim); margin-left: auto; }

.monitor-log {
  flex: 1;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px;
  font-family: 'SF Mono', 'Cascadia Code', monospace;
  font-size: 11px;
}

.mon-row {
  display: flex;
  gap: 8px;
  padding: 2px 6px;
  border-radius: 2px;
}
.mon-row:nth-child(even) { background: rgba(123, 104, 238, 0.03); }
.mon-time { color: var(--text-dim); min-width: 85px; }
.mon-dir { min-width: 42px; font-weight: 600; }
.mon-dir-in { color: var(--green); }
.mon-dir-out { color: var(--purple-light); }
.mon-type { color: var(--purple); min-width: 60px; }
.mon-detail { color: var(--text); flex: 1; }
.mon-hex-toggle { color: var(--text-dim); cursor: pointer; font-size: 10px; }
.mon-hex { display: none; color: var(--text-dim); font-size: 10px; word-break: break-all; }
.mon-hex.show { display: inline; }

/* ===== RANDOMIZER PANEL ===== */
.randomizer-panel {
  position: fixed;
  top: 80px;
  right: 20px;
  background: var(--surface);
  border: 1px solid var(--purple-dark);
  border-radius: 8px;
  padding: 16px;
  z-index: 200;
  min-width: 260px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.rp-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.rp-title { font-weight: 700; color: var(--purple); }
.rp-close { background: none; border: none; color: var(--text-dim); cursor: pointer; font-size: 16px; }
.rp-section { margin-bottom: 12px; }
.rp-label { font-size: 11px; color: var(--text-dim); margin-bottom: 6px; display: block; }

.rp-intensity { display: flex; gap: 4px; }
.rp-level-btn {
  background: var(--bg-lighter);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 11px;
  color: var(--text-dim);
  cursor: pointer;
}
.rp-level-btn.active { background: var(--purple-dark); color: #fff; border-color: var(--purple); }

.rp-locks { display: flex; flex-wrap: wrap; gap: 6px; }
.rp-lock-item { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--text); cursor: pointer; }
.rp-lock-icon { font-size: 14px; }

.rp-go-btn {
  width: 100%;
  background: var(--purple-dark);
  color: #fff;
  border: 1px solid var(--purple);
  border-radius: 6px;
  padding: 10px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 8px;
}
.rp-go-btn:hover { background: var(--purple); }

/* ===== TOAST ===== */
.randomize-toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--purple);
  border-radius: 8px;
  padding: 12px 20px;
  font-size: 14px;
  z-index: 300;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  animation: toast-in 0.3s ease-out;
}

.toast-undo-btn {
  background: var(--purple-dark);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 4px 12px;
  margin-left: 12px;
  cursor: pointer;
  font-size: 12px;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== FOOTER ===== */
.main-footer {
  display: flex;
  justify-content: space-between;
  padding: 8px 24px;
  font-size: 11px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.main-footer a { color: var(--purple-light); text-decoration: none; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--purple-dark); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .main-header { padding: 8px 12px; }
  .logo { font-size: 18px; }
  .content { padding: 12px; }
  .eg-grid-2x2, .lfo-grid-2x2 { grid-template-columns: 1fr; }
  .inline-cards { flex-direction: column; }
  .inline-cards .card { min-width: unset; }
  :root {
    --knob-size-sm: 32px;
    --knob-size-md: 44px;
    --knob-size-lg: 56px;
  }
  .controls-row { gap: 10px; }
  .tab { padding: 8px 12px; font-size: 11px; letter-spacing: 1px; }
}