:root {
  --bg: #0a0a0a;
  --fg: #f2f2f0;
  --muted: #8a8a8a;
  --border: #2a2a2a;
  --sel-fg: #0a0a0a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  height: 100%;
}

::selection { background: #f2f2f0; color: #0a0a0a; }

input[type="range"] { accent-color: #f2f2f0; }

@keyframes dp-blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.app {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg);
  color: var(--fg);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex: none;
}

.wordmark-group {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.wordmark {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.08em;
}

.version {
  font-size: 11px;
  color: var(--muted);
}

.cursor {
  animation: dp-blink 1.1s step-end infinite;
  font-size: 14px;
}

.status {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Main grid */
.app-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 340px;
  min-height: 0;
}

/* Preview pane */
.preview-pane {
  position: relative;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.canvas-wrap {
  flex: 1;
  min-height: 0;
  padding: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#canvas {
  max-width: 100%;
  max-height: 100%;
  image-rendering: pixelated;
  border: 1px solid var(--border);
  background: #000000;
}

.scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.22) 2px,
    rgba(0, 0, 0, 0.22) 3px
  );
}

.preview-strip {
  flex: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 20px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.src-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.drop-hint {
  white-space: nowrap;
}

/* Control panel */
.control-panel {
  border-left: 1px solid var(--border);
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-height: 0;
}

.section-export {
  margin-top: auto;
}

.section-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.row-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.row-label .value {
  color: var(--fg);
}

input[type="range"] {
  width: 100%;
  margin: 0;
}

/* Buttons */
.btn {
  display: block;
  width: 100%;
  font-family: inherit;
  cursor: pointer;
}

.btn-outline {
  padding: 10px;
  background: transparent;
  color: inherit;
  border: 1px solid currentColor;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-align: center;
}

.btn-outline:hover {
  background: var(--fg);
  color: var(--bg);
}

.btn-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.list-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  background: transparent;
  color: inherit;
  border: 1px solid var(--border);
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
  text-align: left;
}

.list-btn.selected {
  background: var(--fg);
  color: var(--sel-fg);
}

.list-btn .swatches {
  display: flex;
  gap: 2px;
  margin-left: auto;
}

.list-btn .swatch {
  width: 13px;
  height: 13px;
  border: 1px solid #000000;
  display: block;
}

.custom-colors {
  display: flex;
  gap: 4px;
  margin-top: 4px;
}

.color-label {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  font-size: 11px;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.color-label input[type="color"] {
  width: 22px;
  height: 22px;
  padding: 0;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
}

.btn-toggle {
  padding: 8px 10px;
  background: transparent;
  color: inherit;
  border: 1px solid var(--border);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-align: left;
}

.btn-toggle.selected {
  background: var(--fg);
  color: var(--sel-fg);
}

.btn-export {
  padding: 12px;
  background: var(--fg);
  color: var(--bg);
  border: 1px solid var(--fg);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.btn-export:hover {
  background: transparent;
  color: var(--fg);
}