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

:root {
  --bg: #0f0f0f;
  --surface: #1a1a1a;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);
  --text-primary: #e8e6e0;
  --text-muted: #666;
  --accent: #7f77dd;
  --radius: 8px;
  --canvas-w: 800;
  --canvas-h: 300;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

#root {
  max-width: 820px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* display */

#display-area {
  position: relative;
  border-radius: 12px;
  border: 0.5px solid var(--border);
  overflow: hidden;
  background: #000;
}

#canvas {
  display: block;
  width: 100%;
  height: auto;
}

#loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  transition: opacity 0.4s ease;
}

#loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

#loading-message {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* color mode transition on display area */
#display-area {
  transition: background-color 0.4s ease;
}

/* controls */

#controls {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

#controls-top,
#controls-bottom {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.label {
  font-size: 12px;
  color: var(--text-muted);
}

/* buttons */

.btn {
  padding: 6px 14px;
  border-radius: var(--radius);
  border: 0.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.12s, opacity 0.12s;
  white-space: nowrap;
}

.btn:hover:not(:disabled) {
  background: #222;
}

.btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn.primary:hover:not(:disabled) {
  opacity: 0.88;
}

.btn.on {
  background: rgba(127,119,221,0.18);
  border-color: var(--accent);
  color: var(--accent);
}

.palette-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
  padding: 0;
}

.palette-swatch:hover {
  transform: scale(1.15);
}

.palette-swatch.selected {
  border-color: var(--text-primary);
}

/* input */

#input-area {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#input-label {
  font-size: 12px;
  color: var(--text-muted);
}

textarea {
  width: 100%;
  min-height: 80px;
  font-size: 14px;
  border-radius: var(--radius);
  border: 0.5px solid var(--border-strong);
  padding: 10px 12px;
  background: var(--surface);
  color: var(--text-primary);
  resize: vertical;
  font-family: inherit;
  line-height: 1.6;
}

textarea:focus {
  outline: none;
  border-color: var(--accent);
}

#meta-info {
  font-size: 12px;
  color: var(--text-muted);
  min-height: 16px;
}

.item-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius);
  border: 0.5px solid var(--border);
  background: var(--surface);
}

.item-badge {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  min-width: 64px;
}

.text-item .item-badge {
  color: var(--accent);
}

.item-content {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 0.5px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 14px;
  padding: 4px 2px;
  /* falls back to Material Icons only for codepoints the default UI font
     can't render (i.e. the PUA icon glyphs) — normal typed text is
     unaffected since the first font in the stack still wins for it */
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif, "Material Icons";
}

.item-content:focus {
  outline: none;
  border-color: var(--accent);
}

.item-transition-type {
  flex: 1;
  padding: 4px 8px;
  border-radius: var(--radius);
  border: 0.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

.item-duration {
  width: 64px;
  padding: 4px 6px;
  border-radius: var(--radius);
  border: 0.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

.item-ms-label {
  font-size: 12px;
  color: var(--text-muted);
}

.item-trigger-label {
  flex: 1;
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
}

.trigger-item .item-badge {
  color: #e0b96a;
}

.repeat-item .item-badge {
  color: #8ac4e0;
}

#display-area.awaiting-click {
  cursor: pointer;
  border-color: var(--accent);
}

.item-delete {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
}

.item-delete:hover {
  color: #e07a7a;
}

.uniform-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.uniform-row .label {
  min-width: 80px;
}

.uniform-row input[type=range] {
  flex: 1;
  accent-color: var(--accent);
}

.uniform-row select {
  flex: 1;
  padding: 4px 8px;
  border-radius: var(--radius);
  border: 0.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

#effect-status {
  font-size: 12px;
  color: var(--text-muted);
}

#effect-status.error {
  color: #e07a7a;
}

#effect-status.success {
  color: #7adb9a;
}

.debug-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.debug-label {
  font-size: 12px;
  color: var(--text-muted);
  min-width: 160px;
}

.debug-range-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.debug-range-wrap input[type=range] {
  flex: 1;
  accent-color: var(--accent);
}

.debug-value {
  font-size: 12px;
  color: var(--text-primary);
  min-width: 44px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.debug-number {
  width: 80px;
  padding: 4px 6px;
  border-radius: var(--radius);
  border: 0.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

.debug-select {
  flex: 1;
  padding: 4px 8px;
  border-radius: var(--radius);
  border: 0.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

.debug-checkbox {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}