/* === JitterFree — light monochrome + Cobalt Blue === */
:root {
  /* Monochromatic neutrals */
  --bg-0: #f1f1f1;       /* app background (matches body inline) */
  --bg-1: #ffffff;       /* panel surface */
  --bg-2: #f6f6f7;       /* raised surface */
  --bg-3: #ebebed;       /* hover surface */
  --bg-4: #dcdce0;       /* active surface */
  --line-1: #e4e4e7;
  --line-2: #d4d4d8;
  --line-3: #a1a1aa;

  --fg-0: #18181b;
  --fg-1: #27272a;
  --fg-2: #52525b;
  --fg-3: #71717a;
  --fg-4: #a1a1aa;
  --fg-5: #d4d4d8;

  /* Cobalt Blue */
  --accent: #2547d6;
  --accent-hi: #3a5cf0;
  --accent-lo: #1d39b3;
  --accent-soft: rgba(37, 71, 214, 0.10);
  --accent-softer: rgba(37, 71, 214, 0.05);
  --accent-ring: rgba(37, 71, 214, 0.35);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-1: 0 1px 1px rgba(24, 24, 27, 0.04), 0 1px 2px rgba(24, 24, 27, 0.06);
  --shadow-2: 0 2px 6px rgba(24, 24, 27, 0.06), 0 6px 18px rgba(24, 24, 27, 0.08);
  --shadow-3: 0 12px 36px rgba(24, 24, 27, 0.18);

  --font-sans: "Montserrat", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --tracking-tight: -0.012em;
}

* { box-sizing: border-box; }
html, body, #root { height: 100%; margin: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg-0);
  color: var(--fg-0);
  font-size: 13px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
button { font-family: inherit; color: inherit; cursor: pointer; border: 0; background: transparent; }
input, select { font-family: inherit; color: inherit; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-1); border-radius: 8px; border: 2px solid var(--bg-1); }
::-webkit-scrollbar-thumb:hover { background: var(--line-2); }

/* === App shell === */
.app {
  display: grid;
  grid-template-rows: 52px 1fr auto;
  grid-template-columns: 220px 1fr 320px;
  grid-template-areas:
    "header header header"
    "layers stage  side"
    "timeline timeline timeline";
  height: 100vh;
  width: 100vw;
  gap: 0;
}

/* === Header === */
.header {
  grid-area: header;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--bg-1);
  border-bottom: 1px solid var(--line-1);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: var(--tracking-tight);
}
.brand-mark {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: var(--accent);
  display: grid;
  place-items: center;
  color: #fff;
}
.brand .sep { color: var(--fg-4); font-weight: 400; margin: 0 4px; }
.brand .doc { color: var(--fg-2); font-weight: 500; }

.header-actions { display: flex; align-items: center; gap: 8px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-1);
  border: 1px solid var(--line-1);
  color: var(--fg-1);
  font-size: 12px;
  font-weight: 500;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.btn:hover { background: var(--bg-2); border-color: var(--line-2); }
.btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn.primary:hover { background: var(--accent-lo); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--fg-2); }
.btn.ghost:hover { background: var(--bg-3); color: var(--fg-0); }
.btn.icon-only { padding: 7px 8px; }

.kbd {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 18px; height: 18px; padding: 0 5px;
  font-size: 10px; color: var(--fg-2);
  background: var(--bg-2); border: 1px solid var(--line-2); border-bottom-width: 2px;
  border-radius: 4px;
}

/* === Layers panel === */
.layers {
  grid-area: layers;
  background: var(--bg-1);
  border-right: 1px solid var(--line-1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.layers-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-1);
}
.section-title {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-2);
}
.layers-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.layer-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  transition: background 0.12s, border-color 0.12s;
}
.layer-row:hover { background: var(--bg-2); }
.layer-row.selected {
  background: var(--accent-soft);
  border-color: var(--accent);
}
.layer-row.dragging { opacity: 0.5; }
.layer-row.drop-above { box-shadow: 0 -2px 0 var(--accent); }
.layer-row.drop-below { box-shadow: 0 2px 0 var(--accent); }
.layer-grip {
  color: var(--fg-4); display: grid; place-items: center;
  cursor: grab;
  flex-shrink: 0;
}
.layer-grip:active { cursor: grabbing; }
.layer-thumb {
  width: 28px; height: 22px;
  border-radius: 3px;
  background: var(--bg-3);
  border: 1px solid var(--line-1);
  background-size: cover; background-position: center;
  flex-shrink: 0;
}
.layer-name {
  flex: 1;
  min-width: 0;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--fg-0);
}
.layer-row:not(.visible) .layer-name { color: var(--fg-4); }
.layer-actions { display: flex; gap: 1px; }
.icon-btn {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 4px;
  color: var(--fg-3);
  background: transparent;
  transition: background 0.12s, color 0.12s;
}
.icon-btn:hover { background: var(--bg-3); color: var(--fg-0); }
.icon-btn.danger:hover { background: rgba(220, 38, 38, 0.10); color: #dc2626; }

.layers-empty {
  padding: 20px 14px;
  text-align: center;
  color: var(--fg-3);
  font-size: 12px;
  line-height: 1.5;
}

.layers-add {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px;
  border-top: 1px solid var(--line-1);
  background: var(--bg-1);
  color: var(--accent);
  font-size: 12px;
  font-weight: 500;
  transition: background 0.12s;
}
.layers-add:hover { background: var(--accent-soft); }

/* === Stage === */
.stage {
  grid-area: stage;
  position: relative;
  background: var(--bg-0);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(24,24,27,0.07) 1px, transparent 1px);
  background-size: 18px 18px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 90%);
}
.stage-frame {
  position: relative;
  width: min(80%, 900px);
  aspect-ratio: 16 / 10;
  background: var(--bg-1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  border: 1px solid var(--line-1);
  overflow: hidden;
}
.stage-canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.stage-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.handle-box {
  position: absolute;
  border: 1.5px solid var(--accent);
  pointer-events: auto;
  cursor: move;
}
.handle {
  position: absolute;
  width: 10px; height: 10px;
  background: #fff;
  border: 1.5px solid var(--accent);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  pointer-events: auto;
}
.handle.tl { top: 0; left: 0; cursor: nwse-resize; }
.handle.tr { top: 0; left: 100%; cursor: nesw-resize; }
.handle.bl { top: 100%; left: 0; cursor: nesw-resize; }
.handle.br { top: 100%; left: 100%; cursor: nwse-resize; }

.stage-empty {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  pointer-events: none;
}
.stage-drop {
  pointer-events: auto;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 32px 40px;
  border: 1px dashed var(--line-2);
  border-radius: var(--radius-lg);
  background: var(--bg-1);
  color: var(--fg-2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.stage-drop:hover, .stage-drop.dragover {
  border-color: var(--accent);
  background: var(--accent-softer);
  color: var(--fg-0);
}
.stage-drop-title { font-size: 14px; font-weight: 600; color: var(--fg-0); }
.stage-drop-sub { font-size: 12px; color: var(--fg-3); }

.stage-watermark {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  color: var(--fg-4);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
  display: flex; gap: 12px; align-items: center;
  pointer-events: none;
}
.stage-watermark .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--fg-4); }

/* === Sidebar === */
.side {
  grid-area: side;
  background: var(--bg-1);
  border-left: 1px solid var(--line-1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.side-empty {
  padding: 28px 20px;
  text-align: center;
  color: var(--fg-3);
  font-size: 12px;
  line-height: 1.55;
}
.side-empty strong { display: block; color: var(--fg-1); font-weight: 600; margin-bottom: 4px; font-size: 13px; }
.side-scroll { flex: 1; overflow-y: auto; }
.side-section {
  border-bottom: 1px solid var(--line-1);
}
.side-section-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
  background: var(--bg-1);
}
.side-section-header:hover { background: var(--bg-2); }
.side-section-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-1);
}
.side-section-title-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}
.side-section-summary {
  font-size: 11px; color: var(--fg-3);
  font-variant-numeric: tabular-nums;
  display: flex; gap: 6px; align-items: center;
}
.side-section-body {
  padding: 4px 14px 16px;
  display: flex; flex-direction: column; gap: 14px;
}

.field-label {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11px; font-weight: 500; color: var(--fg-2);
  margin-bottom: 6px;
}
.field-label-value { color: var(--fg-1); font-variant-numeric: tabular-nums; font-size: 11px; }

.preset-group-label {
  font-size: 9px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.10em;
  color: var(--fg-3);
  margin: 4px 0 6px;
}
.preset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}
.preset-card {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-sm);
  padding: 0;
  display: flex; flex-direction: column;
  overflow: hidden;
  transition: border-color 0.12s, background 0.12s;
}
.preset-card:hover { border-color: var(--line-2); background: var(--bg-3); }
.preset-card.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent) inset;
}
.preset-thumb {
  flex: 1;
  position: relative;
  display: grid; place-items: center;
  overflow: hidden;
}
.preset-thumb-shape {
  width: 56%; height: 56%;
  background: var(--fg-3);
  border-radius: 2px;
}
.preset-card.selected .preset-thumb-shape { background: var(--accent); }
.preset-name {
  font-size: 9px; font-weight: 500;
  color: var(--fg-1);
  padding: 4px 4px;
  text-align: center;
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
  letter-spacing: 0.01em;
}
.preset-card.selected .preset-name { color: var(--accent-lo); }

/* === Intro/Outro tabs + pinned timing controls === */
.anim-section { display: flex; flex-direction: column; }
.anim-sticky {
  position: sticky;
  top: 0;
  z-index: 3;
  background: var(--bg-2);
  box-shadow: 0 1px 0 var(--line-1);
}
.anim-tabs {
  display: flex;
  gap: 0;
  padding: 0 14px;
  background: var(--bg-1);
  border-bottom: 1px solid var(--line-1);
}
.anim-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 10px 4px 11px;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  text-align: left;
  color: var(--fg-3);
  transition: color 0.12s, border-color 0.12s;
}
.anim-tab:hover { color: var(--fg-1); }
.anim-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.anim-tab-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.anim-tab-meta {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--fg-3);
  font-variant-numeric: tabular-nums;
}
.anim-tab.active .anim-tab-meta { color: var(--accent-lo); }

.anim-pinned {
  padding: 12px 14px 14px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line-1);
}
.anim-pinned-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-items: end;
}
.anim-pinned-cell { display: flex; flex-direction: column; min-width: 0; }
.anim-pinned .field-label { margin-bottom: 4px; }
.anim-pinned .select { background: var(--bg-1); }

/* Slider */
.slider {
  flex: 1;
  appearance: none; -webkit-appearance: none;
  background: transparent;
  height: 18px;
  cursor: pointer;
}
.slider::-webkit-slider-runnable-track { height: 3px; background: var(--line-1); border-radius: 999px; }
.slider::-moz-range-track { height: 3px; background: var(--line-1); border-radius: 999px; }
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 2px solid var(--accent);
  margin-top: -5.5px;
  box-shadow: var(--shadow-1);
}
.slider::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 2px solid var(--accent);
  box-shadow: var(--shadow-1);
}

.select-wrap { position: relative; }
.select {
  appearance: none; -webkit-appearance: none;
  width: 100%;
  background: var(--bg-1); border: 1px solid var(--line-1); border-radius: var(--radius-sm);
  padding: 7px 28px 7px 10px;
  font-size: 12px; color: var(--fg-0);
  outline: none;
  transition: border-color 0.12s, background 0.12s;
}
.select:hover { border-color: var(--line-2); }
.select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.select-chevron {
  position: absolute; right: 9px; top: 50%; transform: translateY(-50%);
  pointer-events: none; color: var(--fg-3);
}

.numeric-input {
  background: var(--bg-1);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  font-size: 12px;
  width: 70px;
  outline: none;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.numeric-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }

/* === Timeline === */
.timeline {
  grid-area: timeline;
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
  display: flex;
  flex-direction: column;
  height: 240px;
  min-height: 240px;
  max-height: 50vh;
  resize: vertical;
}
.tl-bar {
  display: flex; align-items: center; gap: 14px;
  padding: 0 14px;
  height: 40px;
  border-bottom: 1px solid var(--line-1);
}
.transport {
  display: flex; align-items: center; gap: 1px;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-sm);
  padding: 2px;
}
.transport-btn {
  width: 26px; height: 22px;
  border-radius: 4px;
  color: var(--fg-1);
  display: grid; place-items: center;
  transition: background 0.12s, color 0.12s;
}
.transport-btn:hover { background: var(--bg-3); }
.transport-btn.active { background: var(--accent); color: #fff; }
.transport-btn.toggle.on { background: var(--accent-soft); color: var(--accent); }

.timecode {
  font-size: 11px; color: var(--fg-1);
  font-variant-numeric: tabular-nums; letter-spacing: 0.02em;
  display: flex; gap: 4px; align-items: center;
}
.timecode .sep { color: var(--fg-4); }
.timecode .total { color: var(--fg-3); }

.tl-meta {
  display: flex; align-items: center; gap: 14px;
  font-size: 11px;
  color: var(--fg-3);
  font-variant-numeric: tabular-nums;
}
.tl-meta-item { display: flex; align-items: center; gap: 6px; }
.tl-meta label { color: var(--fg-3); }
.tl-meta input { width: 64px; }
.tl-spacer { flex: 1; }

.zoom-ctrl {
  display: flex; align-items: center;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-sm);
  padding: 1px;
}
.zoom-ctrl button {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 3px; color: var(--fg-1);
}
.zoom-ctrl button:hover { background: var(--bg-3); }
.zoom-ctrl .zoom-value {
  font-size: 10px;
  color: var(--fg-2);
  width: 36px; text-align: center;
  font-variant-numeric: tabular-nums;
}

.tl-body {
  flex: 1;
  display: grid;
  grid-template-columns: 160px 1fr;
  overflow: hidden;
  min-height: 0;
}
.tl-col-labels {
  border-right: 1px solid var(--line-1);
  background: var(--bg-1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.tl-col-tracks {
  position: relative;
  overflow: auto;
  background: var(--bg-2);
}

.tl-ruler {
  position: relative;
  height: 22px;
  background: var(--bg-1);
  border-bottom: 1px solid var(--line-1);
  flex-shrink: 0;
}
.tl-ruler-tick {
  position: absolute;
  bottom: 0;
  width: 1px;
  height: 5px;
  background: var(--line-2);
}
.tl-ruler-tick.major { height: 9px; background: var(--line-3); }
.tl-ruler-label {
  position: absolute;
  bottom: 1px;
  font-size: 9px;
  color: var(--fg-3);
  font-variant-numeric: tabular-nums;
  transform: translateX(3px);
  letter-spacing: 0.04em;
}
.tl-label-row-head {
  height: 22px;
  border-bottom: 1px solid var(--line-1);
  display: flex; align-items: center;
  padding: 0 12px;
  font-size: 10px; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-3);
}
.tl-label-row {
  height: 36px;
  display: flex; align-items: center; gap: 8px;
  padding: 0 10px;
  font-size: 12px;
  border-bottom: 1px solid var(--line-1);
  color: var(--fg-1);
  cursor: pointer;
}
.tl-label-row.selected {
  background: var(--accent-softer);
  color: var(--accent-lo);
  font-weight: 500;
}
.tl-label-row .layer-thumb {
  width: 24px; height: 18px;
}
.tl-label-row .layer-name {
  font-size: 12px;
  font-weight: 400;
}

.tl-tracks {
  position: relative;
  min-height: 100%;
}
.tl-track {
  position: relative;
  height: 36px;
  border-bottom: 1px solid var(--line-1);
  cursor: pointer;
}
.tl-track.selected { background: var(--accent-softer); }
.tl-track:hover:not(.selected) { background: var(--bg-3); }

.tl-block {
  position: absolute;
  top: 4px;
  bottom: 4px;
  display: flex; align-items: center;
  padding: 0 8px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  white-space: nowrap;
  overflow: hidden;
  border-radius: 3px;
  user-select: none;
}
.tl-block.intro { background: var(--accent); color: #fff; }
.tl-block.outro { background: var(--accent); color: #fff; }
.tl-block.intro::before, .tl-block.outro::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 2px;
  background: rgba(255,255,255,0.6);
}
.tl-block.intro::before { left: 0; }
.tl-block.outro::after { right: 0; }
.tl-block-label {
  display: flex; align-items: center; gap: 6px;
  pointer-events: none;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tl-block-meta {
  font-variant-numeric: tabular-nums;
  font-weight: 400;
  font-size: 9px;
  opacity: 0.75;
  pointer-events: none;
  margin-left: auto;
  padding-left: 6px;
  flex-shrink: 0;
}
.tl-block .resize-handle {
  position: absolute;
  top: 0; bottom: 0;
  width: 6px;
  cursor: ew-resize;
  z-index: 2;
}
.tl-block .resize-handle.left { left: 0; }
.tl-block .resize-handle.right { right: 0; }
.tl-block .move-handle {
  position: absolute;
  inset: 0 6px;
  cursor: grab;
  z-index: 1;
}
.tl-block .move-handle:active { cursor: grabbing; }

.tl-playhead {
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--accent);
  pointer-events: none;
  z-index: 5;
}
.tl-playhead-head {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 11px;
  height: 11px;
  background: var(--accent);
  border-radius: 2px;
  pointer-events: auto;
  cursor: ew-resize;
}
.tl-playhead-hit {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 11px;
  transform: translateX(-50%);
  pointer-events: auto;
  cursor: ew-resize;
}

.tl-snap-line {
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--accent-hi);
  opacity: 0.6;
  pointer-events: none;
  z-index: 4;
}

/* === Modal === */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(24, 24, 27, 0.42);
  display: grid; place-items: center;
  z-index: 100;
  animation: fade-in 0.15s ease-out;
}
.modal {
  background: var(--bg-1);
  border-radius: var(--radius-lg);
  width: 480px;
  max-width: calc(100vw - 32px);
  box-shadow: var(--shadow-3);
  overflow: hidden;
  animation: pop-in 0.18s cubic-bezier(0.2, 0.9, 0.4, 1.05);
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-1);
}
.modal-title { font-size: 14px; font-weight: 600; letter-spacing: var(--tracking-tight); }
.modal-body { padding: 18px; display: flex; flex-direction: column; gap: 18px; }
.modal-footer {
  padding: 14px 18px;
  border-top: 1px solid var(--line-1);
  display: flex; justify-content: flex-end; gap: 8px;
  background: var(--bg-2);
}

.format-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.format-card {
  padding: 14px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-1);
  background: var(--bg-1);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  text-align: left;
  transition: border-color 0.12s, background 0.12s;
}
.format-card:hover { border-color: var(--line-2); background: var(--bg-2); }
.format-card.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.format-card.disabled { opacity: 0.45; }
.format-card.disabled:hover { border-color: var(--line-1); background: var(--bg-1); }
.format-card .format-name { font-size: 13px; font-weight: 600; }
.format-card .format-desc { font-size: 11px; color: var(--fg-3); }

.opt-row { display: flex; flex-direction: column; gap: 6px; }
.opt-row > .opt-label { font-size: 11px; font-weight: 500; color: var(--fg-2); }
.opt-segments {
  display: flex; gap: 4px;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-sm);
  padding: 3px;
}
.opt-segment {
  flex: 1;
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 12px; font-weight: 500;
  color: var(--fg-2);
  background: transparent;
  transition: background 0.12s, color 0.12s;
}
.opt-segment.selected { background: var(--bg-1); color: var(--accent); box-shadow: var(--shadow-1); }
.opt-segment:hover:not(.selected) { color: var(--fg-0); }

.progress-track {
  height: 6px;
  background: var(--line-1);
  border-radius: 999px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.1s linear;
}
.progress-meta {
  display: flex; justify-content: space-between;
  font-size: 11px; color: var(--fg-3);
  font-variant-numeric: tabular-nums;
  margin-top: 6px;
}

.toast {
  position: fixed;
  bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--fg-0); color: #fff;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  z-index: 200;
  box-shadow: var(--shadow-3);
  display: flex; align-items: center; gap: 8px;
  animation: slide-up 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.05);
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop-in { from { opacity: 0; transform: scale(0.96) translateY(6px); } to { opacity: 1; transform: scale(1) translateY(0); } }
@keyframes slide-up { from { opacity: 0; transform: translateX(-50%) translateY(8px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }

.file-input { display: none; }