html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: var(--background);
  color: var(--foreground);
  overflow-x: hidden;
}

* {
  box-sizing: border-box;
}

main {
  min-height: 100vh;
}

.counter {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
}

.counter-value {
  font-size: 2rem;
  font-weight: 600;
  margin: 0;
}

.counter-doubled {
  margin: 0.25rem 0 1rem;
  opacity: 0.7;
}

.counter-buttons {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}

/* ────────────────────────────────────────────────────────────
   koma frame — the visual representation of a single Frame in
   the preview and in the exported video. Background and chrome
   stay deliberately flat; the code is the centerpiece.
   ──────────────────────────────────────────────────────────── */
.koma-frame {
  display: block;
  text-align: left;
  background: #0d1117;
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  width: 100%;
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, monospace;
}

.koma-titlebar {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  background: #161b22;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.koma-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.koma-dot-red    { background: #ff5f57; }
.koma-dot-yellow { background: #febc2e; }
.koma-dot-green  { background: #28c840; }

.koma-code {
  margin: 0;
  padding: 16px 20px;
  font-size: 16px;
  line-height: 1.6;
  color: #c9d1d9;
  white-space: pre;
  overflow: hidden;
}

.koma-line {
  display: block;
  min-height: 1.6em;
}

.koma-cursor {
  color: #58a6ff;
  animation: koma-blink 0.6s step-end infinite;
}

@keyframes koma-blink {
  50% { opacity: 0; }
}

/* ────────────────────────────────────────────────────────────
   koma player — preview stage + transport controls
   ──────────────────────────────────────────────────────────── */
.koma-player {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: stretch;
  width: 100%;
}

.koma-stage {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #1a1b26;
  border-radius: 12px;
  padding: 20px;
  overflow: hidden;
}

.koma-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 4px;
}

.koma-scrub {
  flex: 1 1 auto;
  min-width: 0;
  accent-color: var(--primary);
}

.koma-counter {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 14px;
  opacity: 0.7;
  min-width: 48px;
  text-align: right;
}

.koma-shortcut-hint {
  margin: 0;
  font-size: 12px;
  opacity: 0.5;
  text-align: center;
}

/* ────────────────────────────────────────────────────────────
   koma app shell — header + two-column grid (editors / preview).
   The preview sticks while the editor list scrolls.
   ──────────────────────────────────────────────────────────── */
.koma-app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.koma-app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--background);
}

.koma-app-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.koma-lang-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted-foreground, currentColor);
}

.koma-lang-select {
  padding: 6px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--foreground);
  font: inherit;
}

.koma-app-header-right {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.koma-export-group {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.koma-export-btn {
  padding: 6px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--primary);
  color: var(--primary-foreground);
  font: inherit;
  cursor: pointer;
}

.koma-export-btn-secondary {
  background: var(--card);
  color: var(--foreground);
}

.koma-export-btn:hover:not([disabled]) {
  filter: brightness(1.05);
}

.koma-export-btn[disabled] {
  opacity: 0.7;
  cursor: progress;
}

.koma-export-status {
  font-size: 13px;
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  padding: 6px 12px;
  border-radius: var(--radius);
  background: var(--muted, var(--card));
  color: var(--muted-foreground, var(--foreground));
}

.koma-app-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  padding: 24px;
  flex: 1 1 auto;
  align-items: start;
  max-width: 100%;
}

@media (max-width: 900px) {
  .koma-app-grid {
    grid-template-columns: 1fr;
  }
}

.koma-editors {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: #0d1117;
  border-radius: 8px;
  overflow: hidden;
}

.koma-preview {
  position: sticky;
  top: 80px;
  min-width: 0;
  overflow: hidden;
}

/* per-frame editor — borderless, compact (4-koma manga style) */
.koma-frame-editor {
  position: relative;
}

.koma-frame-toolbar {
  position: absolute;
  top: 4px;
  right: 4px;
  display: inline-flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 1;
}

.koma-frame-editor:hover .koma-frame-toolbar,
.koma-frame-editor:focus-within .koma-frame-toolbar {
  opacity: 1;
}

.koma-iconbtn {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: none;
  background: rgba(255, 255, 255, 0.08);
  color: #c9d1d9;
  font-size: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.koma-iconbtn[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}

.koma-iconbtn-danger:hover:not([disabled]) {
  background: color-mix(in oklch, var(--destructive) 20%, var(--background));
  border-color: var(--destructive);
}

.koma-code-input {
  width: 100%;
  min-height: 80px;
  padding: 12px 14px;
  border: none;
  border-radius: 0;
  background: #0d1117;
  color: #c9d1d9;
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, Menlo, monospace;
  font-size: 14px;
  line-height: 1.6;
  resize: none;
  tab-size: 2;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.koma-frame-editor:last-of-type .koma-code-input {
  border-bottom: none;
}

.koma-code-input:focus {
  outline: 2px solid var(--ring);
  outline-offset: -2px;
}

.koma-frame-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 8px 14px;
  background: #161b22;
  font-size: 13px;
}

.koma-frame-options-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.koma-frame-options-grid input {
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--background);
  color: var(--foreground);
  font: inherit;
}

.koma-add-frame {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--background);
  color: var(--foreground);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 8px auto;
}

.koma-add-frame:hover {
  background: var(--accent);
  color: var(--accent-foreground);
}