:root {
  color-scheme: light;
  --bg: #eef3f0;
  --surface: #ffffff;
  --surface-muted: #f6f8f7;
  --surface-strong: #e8eeeb;
  --text: #17221d;
  --text-soft: #5f6d66;
  --text-faint: #7c8982;
  --border: #d9e2dd;
  --border-strong: #c7d3cd;
  --accent: #087f4f;
  --accent-hover: #066b43;
  --accent-soft: #def3e8;
  --accent-text: #045c38;
  --danger: #b5483e;
  --danger-hover: #963b33;
  --danger-soft: #fae8e6;
  --warning: #9b6500;
  --warning-soft: #fff3d5;
  --shadow: 0 18px 50px rgb(33 65 49 / 0.09);
  --radius-card: 16px;
  --radius-control: 10px;
  --topbar-height: 68px;
  font-family: "Segoe UI Variable", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0f1512;
    --surface: #171f1b;
    --surface-muted: #1d2722;
    --surface-strong: #26332d;
    --text: #edf5f0;
    --text-soft: #acbbb3;
    --text-faint: #899991;
    --border: #2d3d35;
    --border-strong: #3c4e45;
    --accent: #45b981;
    --accent-hover: #5fc891;
    --accent-soft: #173c2b;
    --accent-text: #85d9ad;
    --danger: #dd7167;
    --danger-hover: #ec8177;
    --danger-soft: #462522;
    --warning: #e5ae4b;
    --warning-soft: #3b301d;
    --shadow: 0 18px 50px rgb(0 0 0 / 0.24);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  min-height: 100dvh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 0%, rgb(8 127 79 / 0.07), transparent 28rem),
    var(--bg);
  font-size: 14px;
  line-height: 1.5;
}

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: min(380px, 100%); padding: 28px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); box-shadow: 0 18px 50px rgb(33 65 49 / .12); }
.login-card h1 { margin: 14px 0 6px; }
.login-card p { color: var(--text-soft); font-size: 13px; }
.login-card form { display: grid; gap: 13px; margin-top: 20px; }
.login-card label { display: grid; gap: 6px; color: var(--text-soft); font-size: 13px; }
.login-card input[type="text"],
.login-card input[type="password"] { box-sizing: border-box; width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid var(--border-strong); border-radius: 10px; color: var(--text); background: var(--surface); font: inherit; }
.login-card input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }

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

button,
summary,
input[type="range"] {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 3px solid rgb(8 127 79 / 0.24);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell {
  min-height: 100dvh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(14px);
}

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

.brand-lockup > div {
  min-width: 0;
  display: grid;
  gap: 1px;
}

.brand-lockup strong {
  font-size: 15px;
  letter-spacing: -0.01em;
}

.brand-lockup span:not(.brand-mark) {
  color: var(--text-soft);
  font-size: 12px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 11px;
  color: #ffffff;
  background: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.22);
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-badge {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 4px 9px;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  border-radius: 999px;
  color: var(--accent-text);
  background: var(--accent-soft);
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}

.status-badge-neutral {
  color: var(--text-soft);
  border-color: var(--border);
  background: var(--surface-muted);
}

.workspace {
  min-height: calc(100dvh - var(--topbar-height));
  display: block;
  padding: 24px clamp(18px, 4vw, 56px) 64px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent-soft) 42%, var(--bg)), var(--bg) 55%);
}

.workspace-tabs { width: fit-content; display: flex; gap: 4px; margin: 0 auto 20px; padding: 5px; border: 1px solid var(--border); border-radius: 12px; background: color-mix(in srgb, var(--surface) 86%, transparent); box-shadow: 0 8px 28px rgb(33 65 49 / .08); }
.workspace-tab { min-width: 112px; min-height: 40px; border: 0; border-radius: 8px; color: var(--text-soft); background: transparent; cursor: pointer; font-weight: 700; }
.workspace-tab.active { color: white; background: var(--accent); }
.page-view { width: min(100%, 1240px); margin: 0 auto; }
#submitPage { display: grid; grid-template-columns: minmax(320px, 370px) minmax(0, 1fr); overflow: hidden; border: 1px solid var(--border); border-radius: 18px; background: var(--surface); box-shadow: 0 24px 70px rgb(33 65 49 / .12); }
.process-strip { grid-column: 1 / -1; display: flex; align-items: center; justify-content: center; gap: 14px; padding: 22px; border-bottom: 1px solid var(--border); background: var(--surface); }
.process-step { display: flex; align-items: center; gap: 8px; color: var(--text-soft); font-size: 13px; font-style: normal; }
.process-step b { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: var(--surface-muted); }
.process-step.active b { color: white; background: var(--accent); box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 28%, transparent); }
.process-strip i { color: var(--text-faint); font-style: normal; }
#submitPage .task-history { display: none; }
#submitPage.ai-mode { grid-template-columns: 1fr; }
#submitPage.ai-mode .question-canvas,
#submitPage.ai-mode .survey-section,
#submitPage.ai-mode #parseButton { display: none; }
#submitPage.ai-mode .control-panel { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(390px, .85fr); border-right: 0; background: var(--surface); }
#submitPage.ai-mode .source-section { min-width: 0; padding: 42px; border: 0; border-right: 1px solid var(--border); }
#submitPage.ai-mode .run-section { width: auto; min-width: 0; margin: 0; padding: 42px 34px; border: 0; background: color-mix(in srgb, var(--surface-muted) 60%, var(--surface)); }
#submitPage.ai-mode .source-section .section-heading { margin-bottom: 28px; }
#submitPage.ai-mode .source-section .section-heading h1 { font-size: 26px; }
#submitPage.ai-mode .source-section .url-row input { min-height: 50px; font-size: 14px; }
#submitPage.ai-mode .ai-answer-note { margin-top: 26px; }
#submitPage.ai-mode .ai-answer-note textarea { min-height: 180px; }
#submitPage.ai-mode .run-section .section-heading { margin-bottom: 24px; }
#submitPage.ai-mode .run-section .rate-control-card,
#submitPage.ai-mode .run-section .duration-grid,
#submitPage.ai-mode .run-section .run-submit-row,
#submitPage.ai-mode .run-section .run-proxy-region { width: 100%; max-width: none; }
#submitPage.ai-mode .run-section .stepper-control { width: 100%; }
#submitPage.ai-mode .run-section .duration-grid { gap: 14px; }
#submitPage.ai-mode .run-section .run-proxy-region { grid-template-columns: 78px 1fr; margin-top: 18px; }
#submitPage.ai-mode .run-section .run-proxy-region select { max-width: none; }
#submitPage.ai-mode .run-section .run-submit-row { align-items: end; margin-top: 22px; }
#submitPage.ai-mode .run-section .run-submit-row .button { min-width: 126px; min-height: 46px; }
.history-page { min-height: 560px; padding: clamp(24px, 4vw, 48px); border: 1px solid var(--border); border-radius: 18px; background: var(--surface); box-shadow: 0 24px 70px rgb(33 65 49 / .12); }
.history-page-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; padding-bottom: 22px; border-bottom: 1px solid var(--border); }
.history-page-heading h1 { margin: 0 0 8px; font-size: clamp(24px, 3vw, 34px); }
.history-page-heading p { margin: 0; color: var(--text-soft); }
.history-count { min-width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; color: var(--accent-text); background: var(--accent-soft); font-weight: 800; }
.history-page-list { display: grid; gap: 10px; margin-top: 20px; }
.history-page-list .task-history-item { min-height: 64px; padding: 14px 16px; }
.history-page-list .task-history-item > div { flex-wrap: wrap; align-items: center; }
.history-page-list .task-history-item > div span:last-child { width: 100%; color: var(--text-faint); overflow-wrap: anywhere; }
.empty-history { padding: 80px 20px; color: var(--text-faint); text-align: center; }

@media (max-width: 900px) {
  .workspace { padding: 14px 12px 40px; }
  #submitPage { grid-template-columns: 1fr; }
  .process-strip { gap: 7px; padding: 16px 10px; }
  .process-step span { display: none; }
  .control-panel { border-right: 0; border-bottom: 1px solid var(--border); }
  .history-page { padding: 22px 16px; }
  .history-page-heading { align-items: center; }
  #submitPage.ai-mode .control-panel { grid-template-columns: 1fr; }
  #submitPage.ai-mode .source-section { padding: 26px 20px; border-right: 0; border-bottom: 1px solid var(--border); }
  #submitPage.ai-mode .run-section { padding: 26px 20px; }
  .run-section .stepper-control,
  .run-section .run-submit-row,
  .run-section .duration-grid,
  .run-section .rate-control-card,
  .run-section .run-proxy-region { width: 100%; max-width: none; }
  .run-section .duration-grid { grid-template-columns: 1fr; }
}

.control-panel {
  position: relative;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 74%, var(--bg));
}

.panel-section {
  padding: 24px;
  border-bottom: 1px solid var(--border);
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.compact-heading {
  margin-bottom: 16px;
}

.section-heading h1,
.section-heading h2,
.canvas-toolbar h2 {
  margin: 0;
  color: var(--text);
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.section-heading h2 {
  font-size: 17px;
}

.section-kicker {
  margin: 0 0 4px;
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 650;
}

.step-chip {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-soft);
  background: var(--surface-muted);
  font-size: 12px;
  font-weight: 750;
}

.field-label,
.stacked-field > span,
.advanced-grid label > span {
  display: block;
  margin-bottom: 7px;
  color: var(--text);
  font-size: 13px;
  font-weight: 650;
}

.url-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

input[type="url"],
input[type="number"],
input[type="password"],
input[type="search"],
input[type="text"],
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-control);
  color: var(--text);
  background: var(--surface);
  transition: border-color 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

input[type="url"],
input[type="number"],
input[type="password"],
input[type="search"],
input[type="text"],
textarea {
  padding: 9px 11px;
}

select {
  padding: 8px 32px 8px 10px;
}

textarea {
  min-height: 76px;
  resize: vertical;
}

input:hover,
select:hover,
textarea:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border-strong));
}

input::placeholder,
textarea::placeholder {
  color: var(--text-faint);
}

.field-help,
.privacy-note,
.submit-note {
  margin: 8px 0 0;
  color: var(--text-soft);
  font-size: 12px;
}

.rate-control-card {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-muted);
}

.answer-mode-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin-top: 12px; padding: 4px; border-radius: 10px; background: var(--surface-muted); }
.answer-mode-tab { min-height: 36px; border: 0; border-radius: 8px; color: var(--text-soft); background: transparent; cursor: pointer; font-weight: 650; }
.answer-mode-tab.active { color: var(--accent-text); background: var(--surface); box-shadow: 0 1px 5px rgb(0 0 0 / .08); }

.rate-control-heading,
.rate-line,
.duration-grid label,
.run-submit-row label {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text-soft);
  font-size: 13px;
}

.rate-control-heading {
  justify-content: space-between;
  color: var(--text);
  font-weight: 650;
}

.rate-control-heading input[type="checkbox"] {
  appearance: none;
  width: 34px;
  height: 20px;
  margin: 0;
  border: 0;
  border-radius: 999px;
  background: var(--border-strong);
  cursor: pointer;
}

.rate-control-heading input[type="checkbox"]::after {
  content: "";
  display: block;
  width: 16px;
  height: 16px;
  margin: 2px;
  border-radius: 50%;
  background: white;
  transition: transform .16s ease;
}

.rate-control-heading input[type="checkbox"]:checked { background: #2867e8; }
.rate-control-heading input[type="checkbox"]:checked::after { transform: translateX(14px); }

.rate-line { margin-top: 12px; flex-wrap: wrap; }
.rate-line input { width: 64px; text-align: center; }
.run-estimate { margin: 10px 0 0; color: var(--text-soft); font-size: 12px; }
.run-proxy-region { display: grid; grid-template-columns: auto minmax(150px, 1fr); align-items: center; gap: 8px; margin-top: 12px; color: var(--text-soft); font-size: 13px; }

.duration-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.duration-grid label,
.run-submit-row label { display: grid; gap: 8px; align-items: stretch; }
.stepper-control { display: grid; grid-template-columns: 34px minmax(0, 1fr) 34px; gap: 5px; }
.stepper-control button { border: 1px solid var(--border); border-radius: 9px; background: var(--surface); color: var(--text); font-size: 20px; cursor: pointer; }
.stepper-control input { min-width: 0; text-align: center; }
.run-submit-row { display: flex; align-items: end; justify-content: space-between; gap: 12px; margin-top: 16px; }
.compact-stepper { width: 160px; }
.run-submit-row .button { min-width: 92px; min-height: 40px; }
.run-section { width: min(100%, 760px); margin: 0 auto; }
.run-section .rate-control-card { max-width: 560px; }
.run-section .duration-grid { max-width: 560px; }
.run-section .stepper-control { width: 250px; }
.run-section .run-submit-row { max-width: 500px; }
.run-section .run-proxy-region { max-width: 560px; }
.run-section .run-proxy-region select { max-width: 340px; }

/* 比例提交位于窄侧栏时，时长步进器跟随两列宽度收缩，避免控件撑出面板 */
#submitPage:not(.ai-mode) .duration-grid .stepper-control {
  width: 100%;
  grid-template-columns: 28px minmax(0, 1fr) 28px;
  gap: 4px;
}
#submitPage:not(.ai-mode) .duration-grid .stepper-control button {
  font-size: 16px;
}
#submitPage:not(.ai-mode) .run-submit-row {
  display: grid;
  grid-template-columns: 1fr;
  align-items: stretch;
  max-width: none;
  gap: 14px;
}
#submitPage:not(.ai-mode) .run-submit-row label,
#submitPage:not(.ai-mode) .run-submit-row .compact-stepper {
  width: 100%;
}
#submitPage:not(.ai-mode) .run-submit-row .button {
  width: 100%;
  min-height: 46px;
  font-size: 14px;
}

.ai-answer-toggle { display: flex; align-items: center; gap: 8px; margin-top: 14px; color: var(--text); font-size: 13px; font-weight: 650; }
.ai-answer-toggle input { width: 17px; height: 17px; accent-color: var(--accent); }
.ai-answer-note { margin-top: 20px; }
.ai-answer-note textarea { min-height: 108px; line-height: 1.6; }
#submitPage.ai-mode .source-section { padding: clamp(26px, 4vw, 44px); }
#submitPage.ai-mode .url-row { grid-template-columns: 1fr; }

.task-history { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
.task-history-heading { display: flex; justify-content: space-between; color: var(--text-soft); font-size: 12px; }
.task-history-heading span { min-width: 20px; text-align: center; border-radius: 999px; background: var(--surface-muted); }
.task-history-list { display: grid; gap: 7px; margin-top: 8px; }
.task-history-empty { margin: 0; color: var(--text-faint); font-size: 12px; }
.task-history-item { display: flex; align-items: center; justify-content: space-between; padding: 8px 9px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); font-size: 12px; }
.task-history-item div { display: flex; gap: 9px; }

.advanced-settings {
  margin-top: 18px;
  border-top: 1px solid var(--border);
  display: none;
}

.advanced-settings summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  cursor: pointer;
  color: var(--text-soft);
  font-size: 13px;
  font-weight: 650;
  list-style: none;
}

.advanced-settings summary::-webkit-details-marker {
  display: none;
}

.advanced-settings summary::after {
  content: "+";
  margin-left: auto;
  font-size: 18px;
  font-weight: 400;
}

.advanced-settings[open] summary::after {
  content: "−";
}

.advanced-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 10px;
  margin: 2px 0 14px;
}

.stacked-field {
  display: block;
  margin-top: 12px;
}

.text-button {
  min-height: 36px;
  margin-top: 10px;
  padding: 4px 0;
  border: 0;
  color: var(--accent-text);
  background: transparent;
  cursor: pointer;
  font-weight: 650;
}

.text-button:hover {
  text-decoration: underline;
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  cursor: pointer;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  transition: transform 120ms ease, background 150ms ease, border-color 150ms ease, opacity 150ms ease;
}

.button:active:not(:disabled) {
  transform: translateY(1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.button-primary {
  color: #ffffff;
  background: var(--accent);
}

.button-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.button-secondary {
  color: var(--accent-text);
  border-color: color-mix(in srgb, var(--accent) 34%, var(--border));
  background: var(--accent-soft);
}

.button-secondary:hover:not(:disabled) {
  border-color: var(--accent);
}

.button-submit {
  color: #ffffff;
  background: var(--danger);
}

.button-submit:hover:not(:disabled) {
  background: var(--danger-hover);
}

.button-quiet {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface);
}

.button-quiet:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border-strong));
  background: var(--surface-muted);
}

.button-wide {
  width: 100%;
}

.survey-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 16px;
}

.survey-meta > div {
  min-width: 0;
  padding: 10px;
  border-radius: var(--radius-control);
  background: var(--surface-muted);
}

.survey-meta dt {
  color: var(--text-soft);
  font-size: 11px;
}

.survey-meta dd {
  margin: 3px 0 0;
  overflow: hidden;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.question-index {
  max-height: 248px;
  display: grid;
  gap: 4px;
  overflow: auto;
  padding-right: 4px;
}

.index-link {
  min-height: 38px;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border: 1px solid transparent;
  border-radius: 9px;
  color: var(--text);
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.index-link:hover {
  border-color: var(--border);
  background: var(--surface-muted);
}

.index-number {
  color: var(--text-soft);
  font-variant-numeric: tabular-nums;
  font-weight: 750;
}

.index-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.index-kind {
  color: var(--text-faint);
  font-size: 11px;
}

.preview-card {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface-muted);
  overflow: hidden;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
}

.preview-header span {
  color: var(--text-soft);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 11px;
}

.preview-list {
  max-height: 250px;
  margin: 0;
  padding: 8px 12px 10px 34px;
  overflow: auto;
}

.preview-list li {
  padding: 5px 0;
}

.preview-list strong,
.preview-list span {
  display: block;
}

.preview-list strong {
  font-size: 12px;
}

.preview-list span {
  margin-top: 2px;
  color: var(--text-soft);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.authorization-check {
  min-height: 48px;
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: start;
  gap: 9px;
  margin: 14px 0 10px;
  color: var(--text-soft);
  font-size: 12px;
  cursor: pointer;
}

.authorization-check input {
  width: 17px;
  height: 17px;
  margin: 1px 0 0;
  accent-color: var(--accent);
}

.question-canvas {
  min-width: 0;
  padding: 28px clamp(20px, 3.6vw, 54px) 64px;
}

.empty-state {
  min-height: calc(100dvh - var(--topbar-height) - 56px);
  display: grid;
  place-content: center;
  justify-items: center;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.empty-state h2 {
  margin: 26px 0 8px;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.empty-state p {
  max-width: 520px;
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
}

.empty-visual {
  width: min(520px, 84vw);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.empty-visual span {
  min-height: 76px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: var(--text-soft);
  background: var(--surface-muted);
  font-size: 13px;
  font-weight: 700;
}

.empty-visual span:nth-child(3) {
  color: var(--accent-text);
  background: var(--accent-soft);
}

.loading-state {
  max-width: 920px;
  margin: 24px auto;
}

.loading-copy {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.loading-line,
.skeleton-card {
  background: linear-gradient(100deg, var(--surface-strong) 20%, var(--surface-muted) 40%, var(--surface-strong) 60%);
  background-size: 220% 100%;
  animation: skeleton-shift 1.6s ease-in-out infinite;
}

.loading-line {
  width: 62%;
  height: 16px;
  border-radius: 6px;
}

.loading-line.short {
  width: 22%;
  height: 11px;
}

.loading-line.medium {
  width: 44%;
}

.skeleton-card {
  height: 260px;
  margin: 14px 0;
  border-radius: var(--radius-card);
}

.loading-state p {
  color: var(--text-soft);
  text-align: center;
}

@keyframes skeleton-shift {
  to { background-position: -220% 0; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.question-workspace {
  width: min(100%, 1080px);
  margin: 0 auto;
}

.canvas-toolbar {
  position: sticky;
  top: calc(var(--topbar-height) + 12px);
  z-index: 10;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 16px;
  margin: -4px -16px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 24px rgb(33 65 49 / 0.06);
}

.toolbar-actions {
  display: grid;
  grid-template-columns: minmax(170px, 1fr) minmax(180px, auto) auto;
  align-items: center;
  gap: 8px;
}

.search-field input {
  min-height: 38px;
}

.toolbar-actions select,
.toolbar-actions .button {
  min-height: 38px;
}

.configuration-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.summary-chip {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  padding: 5px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-soft);
  background: var(--surface);
  font-size: 12px;
}

.summary-chip strong {
  margin-right: 4px;
  color: var(--text);
}

.summary-chip.warning {
  color: var(--warning);
  border-color: color-mix(in srgb, var(--warning) 36%, var(--border));
  background: var(--warning-soft);
}

.question-list {
  display: grid;
  gap: 14px;
}

.question-card {
  scroll-margin-top: calc(var(--topbar-height) + 112px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: 0 8px 28px rgb(33 65 49 / 0.045);
  overflow: hidden;
}

.question-card.search-hidden {
  display: none;
}

.question-card-header {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  padding: 18px 20px 14px;
}

.question-number {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--accent-text);
  background: var(--accent-soft);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.question-title-wrap {
  min-width: 0;
}

.question-title-wrap h3 {
  margin: 1px 0 6px;
  font-size: 16px;
  line-height: 1.42;
  letter-spacing: -0.015em;
}

.question-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--text-soft);
  font-size: 11px;
}

.meta-tag {
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  padding: 3px 7px;
  border-radius: 7px;
  background: var(--surface-muted);
}

.meta-tag.required {
  color: var(--warning);
  background: var(--warning-soft);
}

.weight-total {
  min-width: 64px;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--text-soft);
  background: var(--surface-muted);
  text-align: center;
  font-size: 11px;
}

.weight-total strong {
  display: block;
  color: var(--text);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 14px;
}

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 11px 20px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface-muted);
}

.quick-button {
  min-height: 32px;
  padding: 5px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text-soft);
  background: var(--surface);
  cursor: pointer;
  font-size: 12px;
  font-weight: 650;
}

.quick-button:hover:not(:disabled) {
  color: var(--accent-text);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border-strong));
}

.quick-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.question-body {
  padding: 8px 20px 18px;
}

.option-row {
  min-height: 56px;
  display: grid;
  grid-template-columns: minmax(180px, 0.9fr) minmax(180px, 1.2fr) 76px;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border);
}

.option-row:last-child {
  border-bottom: 0;
}

.option-label {
  min-width: 0;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
}

.option-value {
  min-width: 28px;
  display: inline-grid;
  place-items: center;
  padding: 3px 5px;
  border-radius: 6px;
  color: var(--text-soft);
  background: var(--surface-muted);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 11px;
}

.option-name {
  overflow-wrap: anywhere;
}

.weight-slider {
  width: 100%;
  padding: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.weight-input-wrap {
  position: relative;
}

.weight-input-wrap input {
  min-height: 38px;
  padding-right: 25px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.weight-input-wrap span {
  position: absolute;
  top: 50%;
  right: 9px;
  color: var(--text-faint);
  pointer-events: none;
  transform: translateY(-50%);
}

.multiple-control,
.matrix-rows,
.text-answer,
.ai-probing {
  margin-top: 12px;
  padding: 12px;
  border-radius: 11px;
  background: var(--surface-muted);
}

.multiple-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.multiple-control label {
  color: var(--text-soft);
  font-size: 12px;
}

.multiple-control input {
  width: 82px;
  min-height: 38px;
}

.matrix-rows strong,
.text-answer label,
.ai-probing label {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
}

.row-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.row-chip {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-soft);
  background: var(--surface);
  font-size: 11px;
}

.text-answer textarea,
.text-answer input,
.ai-probing textarea {
  background: var(--surface);
}

.text-answer textarea,
.ai-probing textarea {
  min-height: 104px;
}

.ai-probing {
  display: grid;
  gap: 9px;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--border));
}

.ai-probing-heading,
.ai-probe-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ai-probing-heading strong {
  font-size: 13px;
}

.ai-probing-heading p {
  margin: 3px 0 0;
  color: var(--text-soft);
  font-size: 11px;
}

.ai-probe-action {
  margin: 2px 0 4px;
}

.ai-probe-action span {
  color: var(--text-soft);
  font-size: 11px;
  text-align: right;
}

.ai-probing textarea[readonly] {
  color: var(--text);
  background: color-mix(in srgb, var(--accent-soft) 48%, var(--surface));
}

.ai-probing textarea:disabled {
  opacity: 0.58;
}

.question-warning {
  margin: 12px 0 0;
  padding: 9px 10px;
  border: 1px solid color-mix(in srgb, var(--warning) 34%, var(--border));
  border-radius: 9px;
  color: var(--warning);
  background: var(--warning-soft);
  font-size: 12px;
}

.no-search-results {
  padding: 52px 20px;
  color: var(--text-soft);
  text-align: center;
}

.toast-region {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  width: min(380px, calc(100vw - 40px));
  display: grid;
  gap: 8px;
  pointer-events: none;
}

.toast {
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow);
  pointer-events: auto;
}

.toast.error {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 40%, var(--border));
  background: var(--danger-soft);
}

.toast.success {
  color: var(--accent-text);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background: var(--accent-soft);
}

.submit-dialog {
  width: min(520px, calc(100vw - 32px));
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-card);
  color: var(--text);
  background: var(--surface);
  box-shadow: 0 30px 90px rgb(0 0 0 / 0.3);
}

.submit-dialog::backdrop {
  background: rgb(9 16 12 / 0.58);
  backdrop-filter: blur(4px);
}

.submit-dialog form {
  margin: 0;
  padding: 22px;
}

.dialog-heading {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 13px;
}

.dialog-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--danger);
  background: var(--danger-soft);
  font-size: 20px;
  font-weight: 800;
}

.dialog-heading h2 {
  margin: 0 0 6px;
  font-size: 18px;
}

.dialog-heading p {
  margin: 0;
  color: var(--text-soft);
  font-size: 13px;
}

.dialog-summary {
  margin: 18px 0;
  padding: 12px;
  border-radius: 11px;
  color: var(--text-soft);
  background: var(--surface-muted);
  font-size: 12px;
}

.dialog-summary strong {
  color: var(--text);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 330px minmax(0, 1fr);
  }

  .question-canvas {
    padding-inline: 24px;
  }

  .canvas-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar-actions {
    grid-template-columns: minmax(140px, 1fr) minmax(170px, auto) auto;
  }

  .option-row {
    grid-template-columns: minmax(150px, 0.8fr) minmax(140px, 1fr) 72px;
    gap: 11px;
  }
}

@media (max-width: 900px) {
  .topbar {
    position: relative;
  }

  .workspace {
    display: block;
  }

  .control-panel {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .question-canvas {
    min-height: 620px;
  }

  .canvas-toolbar {
    top: 12px;
  }

  .panel-section {
    padding-inline: clamp(18px, 5vw, 40px);
  }
}

@media (max-width: 640px) {
  .topbar {
    height: auto;
    min-height: var(--topbar-height);
    padding: 12px 16px;
  }

  .brand-lockup span:not(.brand-mark),
  .status-badge-neutral {
    display: none;
  }

  .url-row {
    grid-template-columns: 1fr;
  }

  .advanced-grid {
    grid-template-columns: 1fr;
  }

  .question-canvas {
    padding: 18px 14px 48px;
  }

  .empty-visual {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .toolbar-actions {
    grid-template-columns: 1fr;
  }

  .question-card-header {
    grid-template-columns: 42px minmax(0, 1fr);
    padding: 16px;
  }

  .weight-total {
    grid-column: 2;
    width: max-content;
  }

  .quick-actions,
  .question-body {
    padding-inline: 16px;
  }

  .option-row {
    grid-template-columns: minmax(0, 1fr) 70px;
    gap: 8px;
    padding: 10px 0;
  }

  .option-label {
    grid-column: 1 / -1;
  }

  .weight-slider {
    min-height: 14px;
  }

  .multiple-control {
    align-items: flex-start;
    flex-direction: column;
  }

  .dialog-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .dialog-actions .button-submit {
    grid-row: 1;
  }
}