@import url('https://fonts.googleapis.com/css2?family=DM+Mono:ital,wght@0,300;0,400;0,500;1,300&display=swap');

:root {
  --bg: #080808;
  --surface: #0f0f0f;
  --border: #1e1e1e;
  --text: #b8b8b8;
  --muted: #5a5a5a;
  --accent: #b4ff00;
  --accent-glow: rgba(180,255,0,0.12);
  --key-white: #d0d0d0;
  --key-black: #0e0e0e;
  --panel-height: 295px;
}

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

body {
  background: var(--bg);
  font-family: 'DM Mono', monospace;
  overflow: hidden;
  color: var(--text);
}

/* ── Visualization Canvas ─────────────────────────────── */

#canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: calc(100vh - var(--panel-height));
  display: block;
}

/* ── Panel ────────────────────────────────────────────── */

.panel {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--panel-height);
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

/* ── Keyboard Row ─────────────────────────────────────── */

.keyboard-row {
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0 16px;
  height: 100px;
  flex-shrink: 0;
  overflow: hidden;
}

.keyboard {
  display: flex;
  align-items: flex-end;
  position: relative;
  height: 100px;
}

.white {
  background: var(--key-white);
  position: relative;
  width: 24px;
  height: 100px;
  border: 1px solid #666;
  border-top: none;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
  transition: background 0.05s;
}

.black {
  background: var(--key-black);
  position: absolute;
  width: 15px;
  height: 62px;
  top: 0;
  left: 15px;
  z-index: 2;
  border: 1px solid #222;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  cursor: pointer;
  transition: background 0.05s;
}

.playwhite {
  background: var(--accent) !important;
}

.playblack {
  background: var(--accent) !important;
}

.boardkey {
  font-size: 7px;
  color: #333;
  margin-bottom: 3px;
  letter-spacing: 0;
  user-select: none;
}

.black .boardkey {
  color: #ccc;
  font-size: 6px;
}

.playwhite > .boardkey,
.playblack > .boardkey {
  color: #000;
}

/* ── Controls Strip ───────────────────────────────────── */

.controls-strip {
  display: flex;
  flex: 1;
  overflow-x: auto;
  padding-bottom: 6px;
}

.module {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  border-right: 1px solid var(--border);
  flex-shrink: 0;
}

.module:last-child {
  border-right: none;
}

.module-label {
  font-size: 8px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 500;
}

/* ── Oscillator Modules ───────────────────────────────── */

.oscillator-controls {
  flex-direction: row;
  gap: 0;
  padding: 0;
}

.osc-module {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  border-right: 1px solid var(--border);
}

.osc-module:last-child {
  border-right: none;
}

/* ── Wave Type Buttons ────────────────────────────────── */

.wave-grid {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}

.osctype {
  cursor: pointer;
  width: 32px;
  height: 24px;
  border: 1px solid var(--muted);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.osctype svg {
  width: 20px;
  height: 10px;
}

.osctype:hover {
  border-color: #666;
  color: #666;
}

.osctype.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.osctype.dirty {
  border-color: #ff9900;
  color: #ff9900;
  background: rgba(255, 153, 0, 0.12);
}

/* ── Knob Row ─────────────────────────────────────────── */

.knob-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.knob-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.knob-group span {
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}

.knob-group canvas {
  cursor: ns-resize;
  display: block;
}

/* ── Envelope Module ──────────────────────────────────── */

.envelope {
  min-width: 160px;
}

/* ── LFO Section ──────────────────────────────────────── */

.lfo-section {
  flex-direction: row;
  gap: 0;
  padding: 0;
}

.lfo-group {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  border-right: 1px solid var(--border);
}

.lfo-group:last-child {
  border-right: none;
}

/* ── Misc Section ─────────────────────────────────────── */

.misc-section {
  flex-direction: row;
  gap: 0;
  padding: 0;
  flex: 1;
}

.presets-group {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  border-right: 1px solid var(--border);
}

.tune-group {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
}

/* ── Preset Buttons ───────────────────────────────────── */

.preset-row {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.preset-row-builtin {
  display: flex;
  gap: 4px;
  flex-wrap: nowrap;
}

.preset-row-user {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.preset {
  cursor: pointer;
  width: 28px;
  height: 28px;
  border: 1px solid var(--muted);
  color: var(--muted);
  font-size: 10px;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  user-select: none;
}

.preset:hover {
  border-color: #666;
  color: #888;
}

.preset.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.preset.dirty {
  border-color: #ff9900;
  color: #ff9900;
  background: rgba(255, 153, 0, 0.08);
}

/* ── User preset buttons ──────────────────────────────── */

.preset.user-preset {
  width: auto;
  min-width: 28px;
  padding: 0 6px;
  gap: 4px;
}

.preset-name-label {
  pointer-events: none;
  white-space: nowrap;
}

.preset-rename {
  display: none;
  font-size: 9px;
  opacity: 0.6;
  cursor: pointer;
  flex-shrink: 0;
}

.preset.user-preset:hover .preset-rename {
  display: inline;
}

.preset-delete {
  font-size: 11px;
  line-height: 1;
  opacity: 0.5;
  cursor: pointer;
  flex-shrink: 0;
  transition: opacity 0.1s;
}

.preset-delete:hover {
  opacity: 1;
  color: #ff4444;
}

.preset-new {
  font-size: 14px;
  opacity: 0.5;
  transition: opacity 0.15s, border-color 0.15s, color 0.15s;
}

.preset-new:hover {
  opacity: 1;
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Preset action buttons ────────────────────────────── */

.preset-actions {
  display: flex;
  gap: 4px;
  margin-top: 5px;
}

.preset-save-btn,
.preset-reset-btn {
  cursor: pointer;
  font-family: inherit;
  font-size: 8px;
  letter-spacing: 0.1em;
  background: none;
  border: 1px solid #ff9900;
  color: #ff9900;
  padding: 2px 6px;
  border-radius: 2px;
  transition: background 0.15s;
}

.preset-save-btn:hover {
  background: rgba(255, 153, 0, 0.15);
}

.preset-reset-btn {
  border-color: var(--muted);
  color: var(--muted);
}

.preset-reset-btn:hover {
  border-color: #888;
  color: #888;
}

/* ── Inline rename input ──────────────────────────────── */

.preset-name-input {
  width: 60px;
  background: #111;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: inherit;
  font-size: 9px;
  padding: 1px 3px;
  outline: none;
  border-radius: 1px;
}

/* ── Footer ───────────────────────────────────────────── */

footer {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  gap: 12px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.wordmark {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--text);
}

.byline {
  font-size: 9px;
  color: var(--muted);
  flex: 1;
  letter-spacing: 0.05em;
}

.toggle-controls {
  cursor: pointer;
  font-family: inherit;
  font-size: 8px;
  letter-spacing: 0.12em;
  background: none;
  border: 1px solid var(--muted);
  color: var(--muted);
  padding: 3px 8px;
  border-radius: 2px;
  transition: border-color 0.15s, color 0.15s;
}

.toggle-controls:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.contact-link {
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

.contact-link:hover {
  color: var(--text);
}

/* ── Hide utility ─────────────────────────────────────── */

.hide {
  display: none !important;
}

/* ── Custom confirm dialog ────────────────────────────── */

.sv-confirm {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.sv-confirm-box {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 220px;
}

.sv-confirm-msg {
  font-size: 11px;
  color: var(--text);
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.sv-confirm-btns {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.sv-confirm-ok,
.sv-confirm-cancel {
  cursor: pointer;
  font-family: inherit;
  font-size: 8px;
  letter-spacing: 0.12em;
  background: none;
  padding: 3px 10px;
  border-radius: 2px;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.sv-confirm-ok {
  border: 1px solid #ff4444;
  color: #ff4444;
}

.sv-confirm-ok:hover {
  background: rgba(255, 68, 68, 0.15);
}

.sv-confirm-cancel {
  border: 1px solid var(--muted);
  color: var(--muted);
}

.sv-confirm-cancel:hover {
  border-color: #888;
  color: #888;
}