/* ── Reset & base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #0e0e1a;
  --surface: #14142000;
  --border:  #2a2a42;
  --text:    #c8d8f0;
  --dim:     #5a6a8a;
  --accent:  #00d4ff;
  --ok:      #38ffd0;
  --warn:    #ff6b6b;
  font-family: "SF Mono", "Fira Code", "Source Code Pro", monospace;
}

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  user-select: none;
}

/* ── Layout ────────────────────────────────────────────────────────────────── */
#app {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
}

/* ── Toolbar ────────────────────────────────────────────────────────────────── */
#toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 14px;
  background: #0a0a14;
  border-bottom: 1px solid var(--border);
  height: 44px;
  flex-shrink: 0;
  z-index: 100;
}

#toolbar .logo {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  opacity: 0.9;
  text-transform: uppercase;
}

#toolbar .logo span {
  color: #ffd166;
}

.separator {
  width: 1px;
  height: 22px;
  background: var(--border);
}

/* Toolbar buttons */
.tb-btn {
  background: #1a1a2e;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 14px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.04em;
}

.tb-btn:hover:not(:disabled) {
  background: #252540;
  border-color: var(--accent);
  color: var(--accent);
}

.tb-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.tb-btn.primary {
  background: #0c2040;
  border-color: #1a5080;
  color: var(--ok);
}
.tb-btn.primary:hover:not(:disabled) {
  background: #0d2c52;
  border-color: var(--ok);
}

/* Gain control */
.gain-group {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--dim);
}

#gain-slider {
  -webkit-appearance: none;
  width: 80px;
  height: 4px;
  background: #1e2840;
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

#gain-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

#gain-display {
  color: var(--text);
  min-width: 36px;
  font-size: 11px;
}

/* Status pill */
#status {
  margin-left: auto;
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.04em;
}

.status-ok  { color: var(--ok)  !important; }
.status-err { color: var(--warn) !important; }

/* ── Canvas area ────────────────────────────────────────────────────────────── */
#canvas-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#patcher-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

/* ── Keyboard shortcut overlay ──────────────────────────────────────────────── */
#shortcuts {
  position: absolute;
  bottom: 12px;
  right: 14px;
  font-size: 10px;
  color: #2a3a5a;
  line-height: 1.8;
  pointer-events: none;
}

/* ── Scrollbar ──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }