:root {
  --canvas: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #f8fafb;
  --ink: #18212b;
  --muted: #66717d;
  --border: #d7dee5;
  --accent: #087f8c;
  --accent-dark: #05616b;
  --accent-soft: #e5f4f5;
  --warning: #b45309;
  --warning-soft: #fff5e8;
  --success: #18794e;
  --success-soft: #e8f6ee;
  --danger: #b42318;
  --shadow: 0 10px 24px rgba(31, 45, 58, 0.08);
  --radius: 6px;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--canvas); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", sans-serif; overflow-x: clip; }
body { min-width: 320px; }
button, input, select, textarea { font: inherit; max-width: 100%; }
button { border: 0; cursor: pointer; touch-action: manipulation; }
button:disabled { cursor: wait; opacity: 0.58; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 3px solid rgba(8, 127, 140, 0.26); outline-offset: 2px; }
[hidden] { display: none !important; }

h1, h2, h3, p { margin: 0; }
h1 { font-size: 20px; line-height: 1.2; }
h2 { font-size: 25px; line-height: 1.25; }
h3 { font-size: 15px; line-height: 1.3; }
p { color: var(--muted); font-size: 13px; line-height: 1.55; }

input, select, textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
}
input, select { min-height: 40px; padding: 0 10px; }
textarea { padding: 13px; resize: vertical; }
.field { display: grid; gap: 6px; min-width: 0; }
.field span, .model-status span { color: var(--muted); font-size: 11px; }

.app-shell { min-height: 100dvh; padding: 20px 24px 24px; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.brand-block { display: flex; align-items: center; gap: 12px; min-width: 250px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 5px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
}
.eyebrow, .step-kicker {
  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.2;
}
.brand-block .eyebrow { margin-bottom: 3px; }

.project-strip { display: flex; align-items: flex-end; justify-content: flex-end; gap: 8px; min-width: 0; flex-wrap: wrap; }
.compact-field { width: 150px; }
.compact-field input, .compact-field select { height: 36px; }
.model-status { display: grid; gap: 4px; min-width: 94px; }
.model-status strong {
  display: flex;
  align-items: center;
  min-height: 36px;
  padding: 0 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--warning);
  font-size: 12px;
  white-space: nowrap;
}
.model-status strong.is-ok { color: var(--success); }
.save-group { display: grid; gap: 2px; align-self: center; min-width: 80px; }
.save-status { color: var(--muted); font-size: 11px; text-align: center; }
.storage-mode-hint { color: var(--warning); font-size: 11px; text-align: center; }

.workflow-bar { display: flex; align-items: center; gap: 28px; max-width: 1600px; margin: 16px auto 0; padding: 14px 4px 12px; }
.workflow-title { display: grid; gap: 4px; min-width: 102px; }
.workflow-title strong { font-size: 13px; }
.stepper { display: flex; align-items: center; flex: 1; min-width: 0; }
.step-button {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 180px;
  padding: 6px 8px;
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted);
  text-align: left;
}
.step-button:hover { background: var(--surface); color: var(--ink); }
.step-button.is-active { color: var(--ink); }
.step-button.is-complete .step-number { background: var(--success); color: #fff; }
.step-button.is-active .step-number { background: var(--accent); color: #fff; box-shadow: 0 0 0 4px var(--accent-soft); }
.step-number {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}
.step-button b, .step-button small { display: block; }
.step-button b { font-size: 13px; }
.step-button small { margin-top: 2px; font-size: 11px; white-space: nowrap; }
.step-line { flex: 1; height: 1px; min-width: 18px; background: var(--border); }

.workbench-page {
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  gap: 18px;
  max-width: 1600px;
  min-height: calc(100dvh - 170px);
  margin: 0 auto;
}
.context-rail { display: grid; align-content: start; gap: 12px; }
.rail-card, .rail-tip { padding: 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.rail-card { display: grid; gap: 8px; }
.rail-card > strong { font-size: 15px; overflow-wrap: anywhere; }
.rail-muted, .helper-text { color: var(--muted); font-size: 12px; line-height: 1.45; }
.rail-card-head, .section-heading, .panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.rail-card-head > span, .count-badge { color: var(--accent); font-size: 11px; font-weight: 800; }
.prerequisites { gap: 4px; }
.requirement { display: flex; align-items: flex-start; gap: 8px; padding: 8px 0; background: transparent; color: var(--muted); font-size: 12px; line-height: 1.4; text-align: left; }
.requirement:hover { color: var(--ink); }
.requirement-dot {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 3px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
}
.requirement.is-done { color: var(--success); }
.requirement.is-done .requirement-dot { border-color: var(--success); background: var(--success); box-shadow: inset 0 0 0 2px var(--surface); }
.rail-tip { background: var(--accent-soft); border-color: #b9e0e2; }
.rail-tip strong { display: block; margin-bottom: 5px; font-size: 12px; }
.rail-tip p { color: #35636a; font-size: 12px; }

.main-stage {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.step-pane { display: none; min-height: 720px; padding: 24px; }
.step-pane.is-active { display: flex; flex-direction: column; gap: 18px; animation: step-in 180ms ease-out; }
@keyframes step-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

.step-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.step-head > div { display: grid; gap: 7px; min-width: 0; }
.step-head p { max-width: 780px; }

.state-pill, .count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}
.state-pill.is-ok { border-color: #a8d8bd; background: var(--success-soft); color: var(--success); }
.state-pill.is-warn { border-color: #f0c99a; background: var(--warning-soft); color: var(--warning); }

.home-toolbar { display: grid; gap: 12px; }
.home-create-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1.3fr) minmax(220px, 0.8fr) 140px;
  gap: 10px;
  align-items: end;
}
.project-home-panel {
  display: grid;
  gap: 12px;
  flex: 1;
  min-height: 0;
}
.project-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}
.project-card {
  display: grid;
  gap: 10px;
  padding: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
}
.project-card:hover { border-color: #8ac6ca; box-shadow: 0 4px 12px rgba(8, 127, 140, 0.08); }
.project-card-head,
.project-card-meta,
.project-card-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.project-card strong { font-size: 15px; }
.project-card p { font-size: 12px; }
.project-card .meta-line {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}
.project-card-actions { padding-top: 4px; }

.script-layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 16px; flex: 1; min-height: 0; }
.editor-panel, .scene-picker, .wb-col {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
  overflow: hidden;
}
.editor-panel { background: var(--surface); }

.file-drop-zone {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 62px;
  margin: 12px 12px 0;
  padding: 11px 12px;
  border: 1px dashed #9ac9cd;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--ink);
}
.file-drop-zone:hover, .file-drop-zone.is-dragover { border-style: solid; background: #d9eff0; }
.file-drop-zone input { display: none; }
.file-drop-zone strong, .file-drop-zone span { display: block; }
.file-drop-zone strong { font-size: 13px; }
.file-drop-zone span:not(.file-icon) { margin-top: 3px; color: var(--muted); font-size: 11px; line-height: 1.4; }
.file-icon {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent);
  font-weight: 800;
}

#scriptInput {
  flex: 1;
  min-height: 360px;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: #fff;
  font-family: "Songti SC", "STSong", serif;
  font-size: 15px;
  line-height: 1.7;
}
.editor-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  color: var(--muted);
  font-size: 11px;
}
.editor-footer > div { display: flex; gap: 8px; flex-wrap: wrap; }

.scene-picker { padding: 16px; }
.scene-filter-bar { display: grid; grid-template-columns: 1fr 140px; gap: 8px; margin-top: 10px; }
.scene-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
  overflow: auto;
  min-height: 0;
}
.scene-card {
  display: grid;
  gap: 5px;
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  text-align: left;
}
.scene-card:hover { border-color: #8ac6ca; }
.scene-card.is-selected { border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); }
.scene-card strong { font-size: 13px; }
.scene-card span { color: var(--muted); font-size: 11px; line-height: 1.45; }
.scene-card em {
  display: inline-block;
  margin-top: 2px;
  color: var(--accent-dark);
  font-style: normal;
  font-size: 11px;
}
.empty-state {
  display: grid;
  place-items: center;
  min-height: 110px;
  padding: 16px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}
.selected-scene-card {
  margin-top: 12px;
  padding: 11px;
  border: 1px solid #a8d8bd;
  border-radius: var(--radius);
  background: var(--success-soft);
}
.selected-scene-card strong, .selected-scene-card p { display: block; }
.selected-scene-card strong { margin-bottom: 4px; color: var(--success); font-size: 12px; }
.selected-scene-card p { color: #356b50; font-size: 12px; line-height: 1.6; }

.text-button {
  min-height: 36px;
  padding: 0 4px;
  background: transparent;
  color: var(--accent);
  font-size: 12px;
  text-align: left;
}
.text-button:hover { color: var(--accent-dark); text-decoration: underline; }

.profile-toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.profile-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 12px; overflow: auto; }
.profile-card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
  cursor: pointer;
}
.profile-card:hover { border-color: #8ac6ca; box-shadow: 0 4px 12px rgba(8, 127, 140, 0.08); }
.profile-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--border);
}
.profile-card-head strong { font-size: 16px; }
.profile-field { display: grid; gap: 4px; min-width: 0; }
.profile-field span { color: var(--muted); font-size: 11px; }
.profile-field .profile-field-value {
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  font-size: 12px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}
.profile-card-more {
  border-top: 1px dashed var(--border);
  padding-top: 10px;
}
.profile-card-more summary {
  cursor: pointer;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
}
.profile-card-actions {
  display: flex;
  justify-content: flex-end;
  padding-top: 2px;
}
.profile-card-open {
  min-height: 34px;
}
.raw-editor { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface-soft); }
.raw-editor summary { padding: 12px; color: var(--muted); cursor: pointer; font-size: 12px; }
.profile-editor {
  display: block;
  width: 100%;
  min-height: 180px;
  border: 0;
  border-top: 1px solid var(--border);
  border-radius: 0;
  background: var(--surface);
  font-size: 13px;
  line-height: 1.6;
}

.workbench-grid {
  display: grid;
  gap: 14px;
  flex: 1;
  min-height: 0;
}
.workbench-grid.two-col {
  grid-template-columns: minmax(420px, 1.08fr) minmax(380px, 0.92fr);
}
.wb-col { padding: 14px; background: var(--surface); }
.panel-head { margin-bottom: 10px; }
.panel-head > div { display: grid; gap: 4px; min-width: 0; }

.scene-picker-inline {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
}
.inline-scene-filter-bar { margin-top: 0; }
.inline-scene-strip-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.scene-inline-strip {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 260px);
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 4px;
}
.scene-inline-strip .scene-card { min-height: 116px; }
.context-top-meta {
  margin-top: 10px;
  padding: 0 2px;
}
.context-tip-bar {
  margin: 12px 0;
  padding: 10px 12px;
  border-left: 3px solid var(--accent);
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.context-view-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
}
.script-context-view {
  flex: 1;
  min-height: 260px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
  overflow: auto;
  font-family: "Songti SC", "STSong", serif;
  font-size: 14px;
  line-height: 1.75;
  white-space: pre-wrap;
  word-break: break-word;
}
.selectable-context {
  user-select: text;
  -webkit-user-select: text;
}
.context-block { color: var(--muted); }
.context-block .is-selected {
  background: #fff2bf;
  color: var(--ink);
  border-radius: 4px;
  padding: 0 2px;
}
.context-block .is-near { background: #eef6f7; color: var(--ink); }

.floating-generate-btn {
  position: absolute;
  z-index: 5;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 24px rgba(8, 127, 140, 0.22);
  opacity: 0;
  transform: translateY(6px) scale(0.96);
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.floating-generate-btn.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.floating-generate-btn:hover { background: var(--accent-dark); }

.inline-error {
  margin-top: 10px;
  padding: 12px;
  border: 1px solid #f0b4ad;
  border-radius: var(--radius);
  background: #fff1ef;
  color: var(--danger);
  font-size: 12px;
  line-height: 1.5;
}

.check-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  margin-top: 10px;
  padding: 10px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
}
.check-summary.is-ok { border-color: #a8d8bd; background: var(--success-soft); }
.check-summary.is-warn { border-color: #f0c99a; background: var(--warning-soft); }
.check-summary strong { font-size: 13px; }
.check-summary span { color: var(--muted); font-size: 12px; }

.prompt-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

.step-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.step-actions .action-hint { flex: 1; color: var(--muted); font-size: 12px; }
.prev-step-button { margin-right: auto; }

.primary-button, .ghost-button, .fallback-button {
  min-height: 40px;
  padding: 0 14px;
  border-radius: var(--radius);
  font-weight: 700;
}
.primary-button { background: var(--accent); color: #fff; }
.primary-button:hover { background: var(--accent-dark); }
.ghost-button { border: 1px solid var(--border); background: var(--surface); color: var(--ink); }
.ghost-button:hover { border-color: var(--accent); color: var(--accent-dark); }
.fallback-button { border: 1px solid #f0c99a; background: var(--warning-soft); color: var(--warning); }
.icon-button {
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
}
.icon-button:hover { border-color: var(--accent); color: var(--accent-dark); }

.history-panel {
  margin-top: 14px;
  padding: 14px;
  border-radius: var(--radius);
  background: var(--surface-soft);
  border: 1px solid var(--border);
}
.review-grid {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.review-grid .field { flex: 1; min-width: 140px; }

.variant-editor-list {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}
.variant-editor-card {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
}
.variant-editor-card.is-active {
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
  background: #fbfefe;
}
.variant-editor-head,
.variant-editor-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.variant-editor-head strong { font-size: 14px; }
.variant-editor-note {
  color: var(--muted);
  font-size: 12px;
}
.variant-editor-textarea {
  min-height: 230px;
  resize: vertical;
  border: 1px solid #293941;
  border-radius: var(--radius);
  background: #152329;
  color: #edf7f8;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  line-height: 1.65;
}
.variant-editor-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.variant-adopted-badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border: 1px solid #a8d8bd;
  border-radius: 999px;
  background: var(--success-soft);
  color: var(--success);
  font-size: 12px;
  font-weight: 700;
}
.variant-pref-hint {
  color: var(--success);
  font-size: 11px;
}
.variant-muted-hint {
  color: var(--muted);
  font-size: 11px;
}

.revision-chat-log { max-height: 280px; overflow: auto; }
.revision-chat-form { grid-template-columns: 1fr 84px; }

.settings-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 15;
  display: grid;
  align-content: start;
  gap: 18px;
  width: min(460px, 100vw);
  height: 100dvh;
  padding: 24px;
  border-left: 1px solid var(--border);
  background: var(--surface);
  box-shadow: -14px 0 30px rgba(31, 45, 58, 0.14);
  overflow: auto;
}
.drawer-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-head > div { display: grid; gap: 6px; }
.drawer-section { display: grid; gap: 12px; }
.drawer-section > h3 { font-size: 15px; }
.model-config { display: grid; gap: 10px; }
.model-config .ghost-button { justify-self: start; }
.tuning-log { display: grid; gap: 9px; max-height: 260px; overflow: auto; }
.message { padding: 10px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface-soft); font-size: 12px; line-height: 1.45; white-space: pre-wrap; word-break: break-word; }
.message.user { border-color: #b9e0e2; background: var(--accent-soft); }
.message.system { border-color: #f0c99a; background: var(--warning-soft); }
.message strong { display: block; margin-bottom: 3px; color: var(--accent-dark); font-size: 11px; }
.tuning-form { display: grid; grid-template-columns: 1fr 72px; gap: 8px; }

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 25;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(24, 33, 43, 0.48);
  backdrop-filter: blur(4px);
}
.modal-card {
  width: min(860px, 100%);
  max-height: calc(100dvh - 36px);
  overflow: auto;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.modal-head { padding-bottom: 14px; }
.modal-section { display: grid; gap: 12px; margin-top: 16px; }
.profile-modal-body { display: grid; gap: 10px; }
.profile-chat-log { max-height: 240px; }
.profile-chat-form { grid-template-columns: 1fr 84px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 30;
  min-width: 220px;
  max-width: calc(100vw - 32px);
  padding: 11px 14px;
  transform: translate(-50%, 150%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--ink);
  font-size: 13px;
  text-align: center;
  transition: transform 180ms ease;
}
.toast.show { transform: translate(-50%, 0); }

.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(24, 33, 43, 0.58);
  backdrop-filter: blur(4px);
}
.auth-box {
  display: grid;
  gap: 12px;
  width: min(360px, 100%);
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.auth-error { min-height: 18px; color: var(--warning); font-size: 12px; }

@media (max-width: 1260px) {
  .workbench-grid.two-col { grid-template-columns: minmax(340px, 1fr) minmax(340px, 1fr); }
}

@media (max-width: 1120px) {
  .app-shell { padding: 16px; }
  .topbar { align-items: flex-start; flex-direction: column; gap: 14px; }
  .project-strip { width: 100%; justify-content: flex-start; }
  .workflow-bar { align-items: flex-start; flex-direction: column; gap: 12px; }
  .stepper { width: 100%; }
  .workbench-page { grid-template-columns: 1fr; }
  .context-rail { grid-template-columns: minmax(180px, 0.7fr) minmax(240px, 1fr) minmax(180px, 0.7fr); }
  .rail-tip { align-self: stretch; }
  .script-layout, .workbench-grid.two-col { grid-template-columns: 1fr; }
  .home-create-grid { grid-template-columns: 1fr 1fr 140px; }
}

@media (max-width: 760px) {
  .app-shell { padding: 10px 10px 78px; }
  .brand-block { min-width: 0; }
  h1 { font-size: 18px; }
  h2 { font-size: 21px; }
  .project-strip { display: grid; grid-template-columns: 1fr 1fr; align-items: end; }
  .compact-field { width: auto; }
  .model-status { grid-column: 1 / 2; }
  .save-group { grid-column: 2 / 3; }
  .project-strip .icon-button { grid-column: 1 / 2; }
  .project-strip .ghost-button { grid-column: 2 / 3; }
  .project-strip .primary-button { grid-column: 1 / -1; }
  #backToHomeBtn { grid-column: 1 / -1; }
  .workflow-bar { padding: 10px 0; }
  .stepper { overflow-x: auto; padding: 3px 1px 7px; }
  .step-button { min-width: 130px; }
  .step-button small { display: none; }
  .step-line { min-width: 12px; }
  .context-rail { grid-template-columns: 1fr; }
  .rail-tip { display: none; }
  .step-pane { min-height: calc(100dvh - 190px); padding: 17px 14px; }
  .step-head { gap: 12px; padding-bottom: 16px; flex-direction: column; }
  .step-head p { font-size: 12px; }
  .scene-filter-bar, .script-layout, .workbench-grid.two-col, .tuning-form, .profile-chat-form, .revision-chat-form, .home-create-grid { grid-template-columns: 1fr; }
  .editor-panel { min-height: 520px; }
  .scene-picker { min-height: 320px; }
  .profile-toolbar, .prompt-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .profile-toolbar .text-button { grid-column: 1 / -1; }
  .scene-inline-strip {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    overflow-x: visible;
  }
  .scene-inline-strip .scene-card { min-height: auto; }
  .review-grid { display: grid; grid-template-columns: 1fr 1fr; }
  .variant-editor-textarea { min-height: 190px; }
  .step-actions {
    position: sticky;
    bottom: -17px;
    z-index: 3;
    margin: 0 -14px -17px;
    padding: 11px 14px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 -8px 18px rgba(31, 45, 58, 0.08);
  }
  .step-actions .action-hint { display: none; }
  .project-list { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .project-strip { grid-template-columns: 1fr; }
  .project-strip .model-status, .project-strip .save-group, .project-strip .icon-button, .project-strip .ghost-button, .project-strip .primary-button { grid-column: auto; }
  .step-number { width: 24px; height: 24px; }
  .step-button { min-width: 105px; padding: 5px; gap: 6px; }
  .step-button b { font-size: 12px; }
  .review-grid,
  .profile-toolbar,
  .prompt-actions { grid-template-columns: 1fr; }
  .modal-card { padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}