:root {
  --paper: #f5f2ea;
  --paper-raised: #fffdf8;
  --ink: #171916;
  --ink-soft: #5d625c;
  --rule: #d8d4ca;
  --signal: #2457d6;
  --signal-soft: #e8eeff;
  --success: #237454;
  --success-soft: #e5f3ec;
  --warning: #985b16;
  --warning-soft: #fff0d9;
  --shadow-workbench: 0 24px 80px rgb(23 25 22 / 8%);
  --font-sans: Inter, Pretendard, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, monospace;
  color: var(--ink);
  font-family: var(--font-sans);
  font-synthesis: none;
  background: var(--paper);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(90deg, transparent 0 49.9%, rgb(23 25 22 / 3%) 50%, transparent 50.1%),
    var(--paper);
}

button,
textarea,
input {
  font: inherit;
}

button {
  color: inherit;
}

button,
label {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
textarea:focus-visible,
input:focus-visible,
.drop-zone:has(input:focus-visible) {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.site-header,
main,
footer {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  min-height: 76px;
  align-items: center;
  gap: 24px;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-size: 11px;
}

.local-badge,
.section-index,
.eyebrow,
.drop-kicker,
.scope-note > span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.local-badge {
  padding: 6px 10px;
  border: 1px solid var(--success);
  border-radius: 999px;
  color: var(--success);
}

.intro {
  display: grid;
  min-height: 470px;
  align-content: center;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
}

.eyebrow {
  grid-column: 1 / -1;
  margin: 0 0 24px;
  color: var(--signal);
}

.intro h1 {
  grid-column: 1 / 8;
  margin: 0;
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.lede {
  grid-column: 9 / -1;
  align-self: end;
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.7;
}

.workbench {
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: 20px;
  background: var(--paper-raised);
  box-shadow: var(--shadow-workbench);
}

.workbench-topline {
  display: flex;
  min-height: 112px;
  align-items: end;
  justify-content: space-between;
  padding: 24px 32px;
  border-bottom: 1px solid var(--rule);
}

.section-index {
  margin: 0 0 8px;
  color: var(--ink-soft);
}

h2,
h3,
p {
  text-wrap: pretty;
}

.workbench h2,
.scope-grid h2,
.evidence-ledger h2 {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.03em;
}

.mode-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--paper);
}

.mode-tab {
  min-width: 88px;
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  transition:
    background-color 180ms cubic-bezier(0.2, 0.8, 0.2, 1),
    color 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.mode-tab:hover {
  background: var(--paper-raised);
}

.mode-tab.is-selected {
  color: var(--signal);
  background: var(--signal-soft);
  font-weight: 700;
}

.workspace-grid {
  display: grid;
  min-height: 530px;
  grid-template-columns: minmax(0, 7fr) minmax(320px, 5fr);
}

.workspace-main {
  padding: 32px;
}

.drop-zone {
  display: flex;
  min-height: 300px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  border: 1px dashed var(--ink-soft);
  border-radius: 12px;
  background:
    linear-gradient(var(--paper-raised), var(--paper-raised)) padding-box,
    repeating-linear-gradient(
        45deg,
        transparent,
        transparent 6px,
        rgb(36 87 214 / 5%) 6px,
        rgb(36 87 214 / 5%) 12px
      )
      border-box;
  cursor: pointer;
  text-align: center;
  transition:
    transform 180ms cubic-bezier(0.2, 0.8, 0.2, 1),
    background-color 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.drop-zone:hover,
.drop-zone.is-dragging {
  transform: translateY(-2px);
  background: var(--signal-soft);
}

.drop-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.drop-zone strong {
  font-size: 20px;
}

.drop-zone > span:last-child,
.field-label span {
  color: var(--ink-soft);
  font-size: 14px;
}

.drop-kicker {
  color: var(--signal);
}

.file-section,
.text-result {
  margin-top: 24px;
}

.clean-mode {
  display: grid;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  border: 0;
}

.clean-mode legend {
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
}

.mode-option {
  display: grid;
  min-height: 68px;
  align-items: center;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--paper-raised);
  cursor: pointer;
}

.mode-option:has(input:checked) {
  border-color: var(--signal);
  background: var(--signal-soft);
}

.mode-option:has(input:disabled) {
  cursor: not-allowed;
  opacity: 0.68;
}

.mode-option input {
  width: 18px;
  height: 18px;
  accent-color: var(--signal);
}

.mode-option > span:not(.backend-state) {
  display: grid;
  gap: 4px;
}

.mode-option small,
.backend-detail,
.setup-guide p {
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.6;
}

.backend-state {
  padding: 5px 8px;
  border-radius: 999px;
  color: var(--warning);
  background: var(--warning-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
}

.backend-state.is-ready {
  color: var(--success);
  background: var(--success-soft);
}

.backend-detail {
  margin: 4px 0 0;
}

.setup-guide {
  padding: 12px 16px;
  border-left: 2px solid var(--rule);
}

.setup-guide summary {
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
}

.setup-guide a {
  display: inline-block;
  min-height: 44px;
  padding: 12px 0;
  color: var(--signal);
  font-size: 12px;
  text-underline-offset: 4px;
}

.setup-guide code {
  display: block;
  overflow-x: auto;
  margin-top: 12px;
  padding: 12px;
  border-radius: 8px;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
}

.subheading-row {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.subheading-row h3 {
  margin: 0;
  font-size: 16px;
}

.text-button,
.secondary-button {
  min-height: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.text-button {
  color: var(--ink-soft);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.secondary-button {
  padding: 0 16px;
  border: 1px solid var(--rule);
  border-radius: 8px;
}

.file-list {
  display: grid;
  gap: 8px;
  margin: 12px 0 20px;
  padding: 0;
  list-style: none;
}

.file-row {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  padding: 12px 16px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--paper-raised);
}

.file-row-main {
  min-width: 0;
}

.file-name {
  overflow: hidden;
  margin: 0 0 4px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-meta {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 12px;
}

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

.status-chip {
  padding: 5px 8px;
  border-radius: 999px;
  color: var(--warning);
  background: var(--warning-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
}

.status-chip.is-clean {
  color: var(--success);
  background: var(--success-soft);
}

.status-chip.is-processing {
  color: var(--signal);
  background: var(--signal-soft);
}

.download-link {
  min-height: 36px;
  padding: 8px 10px;
  border: 1px solid var(--success);
  border-radius: 8px;
  color: var(--success);
  font-size: 12px;
  text-decoration: none;
}

.primary-button {
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid var(--signal);
  border-radius: 8px;
  color: var(--paper-raised);
  background: var(--signal);
  cursor: pointer;
  font-weight: 700;
  transition:
    transform 120ms cubic-bezier(0.2, 0.8, 0.2, 1),
    filter 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.primary-button:hover {
  filter: brightness(0.92);
}

.primary-button:active {
  transform: translateY(1px);
}

.primary-button:disabled {
  cursor: not-allowed;
  filter: grayscale(1);
  opacity: 0.5;
}

.full-button {
  width: 100%;
}

.evidence-ledger {
  display: flex;
  min-width: 0;
  padding: 32px;
  border-left: 1px solid var(--rule);
  flex-direction: column;
  background: var(--paper);
}

.ledger-empty {
  display: grid;
  min-height: 320px;
  place-items: center;
  align-content: center;
  gap: 20px;
  color: var(--ink-soft);
  text-align: center;
}

.ledger-empty p {
  max-width: 260px;
  margin: 0;
  line-height: 1.7;
}

.ledger-crosshair {
  width: 72px;
  height: 72px;
  border: 1px solid var(--rule);
  border-radius: 50%;
  background:
    linear-gradient(var(--rule), var(--rule)) center / 1px 100% no-repeat,
    linear-gradient(90deg, var(--rule), var(--rule)) center / 100% 1px no-repeat;
}

.evidence-list {
  margin: 32px 0 0;
}

.evidence-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}

.evidence-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
}

.evidence-row dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  text-align: right;
}

.ledger-summary {
  margin: 24px 0 0;
  padding: 16px;
  border-radius: 12px;
  color: var(--success);
  background: var(--success-soft);
  line-height: 1.6;
}

.field-label {
  display: flex;
  margin-bottom: 12px;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  font-weight: 700;
}

textarea {
  width: 100%;
  resize: vertical;
  padding: 16px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  color: var(--ink);
  background: var(--paper-raised);
  line-height: 1.7;
}

#source-text {
  margin-bottom: 16px;
}

#cleaned-text {
  margin-top: 12px;
  background: var(--success-soft);
}

.scope-grid {
  display: grid;
  padding: 96px 0;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
}

.scope-grid > div:first-child {
  grid-column: 1 / 5;
}

.scope-notes {
  display: grid;
  grid-column: 6 / -1;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.scope-note {
  padding: 24px;
  border-top: 1px solid var(--ink);
}

.scope-note > span {
  color: var(--signal);
}

.scope-note h3 {
  margin: 24px 0 12px;
  font-size: 20px;
}

.scope-note p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

footer {
  display: flex;
  min-height: 92px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 12px;
}

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

[hidden] {
  display: none;
}

@media (max-width: 900px) {
  .intro {
    min-height: 420px;
  }

  .intro h1 {
    grid-column: 1 / 9;
  }

  .lede {
    grid-column: 9 / -1;
  }

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

  .evidence-ledger {
    min-height: 360px;
    border-top: 1px solid var(--rule);
    border-left: 0;
  }

  .scope-grid > div:first-child {
    grid-column: 1 / 6;
  }

  .scope-notes {
    grid-column: 6 / -1;
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header,
  main,
  footer {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    min-height: 64px;
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 0;
  }

  .site-header .mode-tabs {
    order: 3;
    flex-basis: 100%;
  }

  .intro {
    min-height: 390px;
    display: block;
    padding: 72px 0;
  }

  .intro h1 {
    font-size: 48px;
  }

  .lede {
    margin-top: 32px;
  }

  .workbench {
    margin-inline: -8px;
  }

  .workbench-topline {
    min-height: auto;
    padding: 24px;
    align-items: stretch;
    flex-direction: column;
    gap: 24px;
  }

  .mode-tabs,
  .mode-tab {
    width: 100%;
  }

  .workspace-main,
  .evidence-ledger {
    padding: 24px;
  }

  .drop-zone {
    min-height: 250px;
    padding: 24px;
  }

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

  .field-label {
    align-items: start;
    flex-direction: column;
    gap: 4px;
  }

  .scope-grid {
    display: block;
    padding: 72px 0;
  }

  .scope-notes {
    margin-top: 40px;
  }

  footer {
    padding: 24px 0;
    align-items: start;
    flex-direction: column;
    gap: 8px;
  }
}

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

  .mode-tab,
  .drop-zone,
  .primary-button {
    transition: none;
  }
}