/* 快速切片小工具 */
:root {
  --ink: #172033;
  --muted: #5e6d7e;
  --canvas: #e7edf3;
  --surface: #ffffff;
  --line: #d5dee8;
  --cobalt: #1f4fe0;
  --cobalt-deep: #173eb4;
  --ok: #0d7a63;
  --stage: #121820;
  --display: "Bahnschrift", "Segoe UI", sans-serif;
  --body: "Segoe UI", "Microsoft YaHei UI", sans-serif;
  --mono: "Cascadia Mono", Consolas, monospace;
  color: var(--ink);
  background: var(--canvas);
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.45;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
}

button, textarea, input { font: inherit; color: inherit; }

button {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 2px;
  padding: 8px 12px;
  cursor: pointer;
}

button:hover { border-color: #b7c5d4; }

button:focus-visible, textarea:focus-visible, input:focus-visible {
  outline: 2px solid var(--cobalt);
  outline-offset: 2px;
}

button:disabled {
  opacity: 0.45;
  cursor: default;
}

button.primary {
  background: var(--cobalt);
  border-color: var(--cobalt);
  color: #fff;
}

button.primary:hover { background: var(--cobalt-deep); }

button.primary:disabled,
button.primary:disabled:hover {
  background: var(--cobalt);
  border-color: var(--cobalt);
}

kbd {
  font-family: var(--mono);
  font-size: 11px;
  border: 1px solid currentColor;
  padding: 0 4px;
  margin-left: 4px;
}

.app {
  height: 100%;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.top {
  padding: 14px 20px 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand h1 {
  margin: 0;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.purpose {
  margin: 2px 0 0;
  color: var(--ink);
  font-size: 13px;
}

.workspace {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--cobalt);
  flex: none;
}

.top-actions {
  display: flex;
  gap: 8px;
  flex: none;
}

.axis {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 8px 16px;
  align-items: center;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.axis-label h2 {
  margin: 0;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.axis-track {
  min-height: 40px;
  display: flex;
  align-items: stretch;
  background-color: var(--canvas);
  background-image: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 47px,
    rgba(23, 32, 51, 0.08) 47px,
    rgba(23, 32, 51, 0.08) 48px
  );
  overflow: auto;
}

.axis-block {
  flex: 1 1 0;
  min-width: 48px;
  border: 0;
  border-right: 2px solid #fff;
  border-radius: 0;
  padding: 0 6px;
  background: var(--cobalt);
  color: #fff;
  font-family: var(--display);
  font-size: 16px;
  letter-spacing: 0.04em;
}

.axis-block.memo {
  background: transparent;
  color: var(--muted);
  box-shadow: inset 0 0 0 1px #b7c5d4;
}

.axis-block.selected {
  outline: 3px solid var(--ink);
  outline-offset: -4px;
}

.axis-block.locked { opacity: 0.55; }

.axis-note {
  grid-column: 2;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.desk-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
}

.gate {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--canvas);
}

.gate[hidden] { display: none; }

.gate-card {
  width: min(560px, 100%);
}

.gate-card h2 {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.25;
}

.gate-card p {
  margin: 0;
  color: var(--muted);
  max-width: 46em;
}

.gate-card p + p { margin-top: 10px; }

.gate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.steps {
  display: flex;
  gap: 18px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-size: 14px;
}

.steps span {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-right: 8px;
  background: var(--cobalt);
  color: #fff;
  font-family: var(--display);
  font-size: 13px;
}

.gate-note {
  margin-top: 14px;
  min-height: 1.2em;
}

.desk {
  flex: 1;
  min-height: 0;
  min-width: 0;
  display: grid;
  grid-template-columns: var(--w-ep, 240px) 8px minmax(280px, 1fr) 8px var(--w-stage, 380px);
}

.split {
  cursor: col-resize;
  position: relative;
  background: var(--canvas);
}

.split::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 3px;
  width: 2px;
  background: var(--line);
}

.split:hover::after,
.split.dragging::after { background: var(--cobalt); }

.col {
  min-height: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface);
}

.col-script { background: #f8fafc; }

.col-script h2 { letter-spacing: 0.02em; }

.sub-export {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px 8px;
  color: var(--muted);
  font-size: 13px;
}

.sub-export label,
.memo-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sub-export .hint { margin-left: auto; font-size: 12px; }

.memo-toggle {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

.row.memo .line-text { color: var(--muted); }

.col-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 14px 16px 8px;
}

.col-head h2 {
  margin: 0;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.count {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 12px;
}

.head-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.head-tools button { padding: 4px 8px; font-size: 12px; }

.list {
  list-style: none;
  margin: 0;
  padding: 0 10px 10px;
  overflow: auto;
  flex: 1;
}

.row {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 8px;
  padding: 8px;
  margin-bottom: 6px;
  background: var(--surface);
  border: 1px solid transparent;
  cursor: grab;
}

.col-script .row { grid-template-columns: 42px 32px 1fr; }

.row.selected {
  border-color: transparent;
  background: #e4ebff;
  box-shadow: inset 5px 0 0 var(--cobalt);
}

.row.locked {
  background: #f3f6f9;
  cursor: default;
}

.row.selected.locked { box-shadow: inset 5px 0 0 #8ea0c4; }

.lock {
  width: 32px;
  height: 32px;
  align-self: start;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 16px;
  line-height: 1;
}

.lock[aria-pressed="true"] { background: #e7edf3; }

.paste-tag {
  display: inline-block;
  margin-right: 6px;
  padding: 0 6px;
  background: var(--cobalt);
  color: #fff;
  font-family: var(--body);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.row.drag { border-color: var(--cobalt); background: #eef2ff; }

.num {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  font-family: var(--display);
  font-size: 18px;
  background: #e7edf3;
  color: var(--ink);
}

.line-text, .row-actions button, .memo-toggle { cursor: auto; }

.row.selected .num {
  background: var(--cobalt);
  color: #fff;
}

.row-body { min-width: 0; }

.row-title {
  margin: 0;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.meta {
  margin: 4px 0 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}

.meta.ok { color: var(--ok); }

.line-text {
  width: 100%;
  border: 0;
  resize: vertical;
  min-height: 44px;
  padding: 0;
  background: transparent;
}

.row-actions, .point-actions, .composer {
  display: flex;
  gap: 6px;
  align-items: center;
}

.row-actions { margin-top: 6px; }

.row-actions button, .point-actions button, .composer button {
  padding: 4px 8px;
  font-size: 12px;
}

.composer {
  padding: 10px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.composer textarea {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 8px;
  resize: none;
  background: #fff;
}

.stage {
  position: relative;
  margin: 0 12px;
  background: var(--stage);
  min-height: 180px;
  display: grid;
}

.stage video {
  width: 100%;
  max-height: 280px;
  background: var(--stage);
  display: none;
}

.stage.ready video { display: block; }

.stage-note {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  padding: 16px;
  text-align: center;
  color: #c5d0dc;
  font-size: 13px;
}

.stage.ready .stage-note { display: none; }

.theater-bar { display: none; }

.stage:fullscreen,
.stage:-webkit-full-screen {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  margin: 0;
  background: #000;
}

.stage:fullscreen video,
.stage:-webkit-full-screen video {
  display: block;
  flex: 1;
  width: 100%;
  max-height: none;
  min-height: 0;
}

.stage:fullscreen .theater-bar,
.stage:-webkit-full-screen .theater-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #172033;
}

.stage:fullscreen .theater-bar .count,
.stage:-webkit-full-screen .theater-bar .count { color: #fff; }

.theater-bar .primary { margin-left: auto; }

.points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  align-items: end;
  padding: 12px 12px 0;
}

.points label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}

.points input {
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 8px;
  font-family: var(--mono);
  background: #fff;
}

.span {
  grid-column: 1 / -1;
  font-family: var(--mono);
  color: var(--ink);
}

.point-actions { padding: 0 12px 12px; }

.point-actions .primary { margin-left: auto; }

.status {
  padding: 8px 20px;
  border-top: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 13px;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.empty {
  margin: 8px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 960px) {
  .brand-row, .top-actions, .sub-export { flex-wrap: wrap; }
  .axis { grid-template-columns: 1fr; }
  .axis-note { grid-column: 1; }
  .desk {
    display: flex;
    flex-direction: column;
    overflow: auto;
  }
  .split { display: none; }
  .col { min-height: 280px; }
  .col-stage { order: -1; }
  .stage video { max-height: 220px; }
  .gate-card h2 { font-size: 26px; }
  .steps { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; }
}