:root {
  color-scheme: light;
  --ink: #16201d;
  --muted: #66736f;
  --line: #d7dfdc;
  --surface: #f7f8f5;
  --panel: #ffffff;
  --soft: #edf3f0;
  --accent: #1f7a66;
  --accent-dark: #155746;
  --warn: #8a5a14;
  --danger: #a23a35;
  --shadow: 0 10px 28px rgba(22, 32, 29, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--surface);
  color: var(--ink);
}

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

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(280px, 330px) 1fr;
  min-height: 100vh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px;
  background: #fbfcfa;
  border-right: 1px solid var(--line);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.brand-block {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 14px;
  align-items: center;
}

.brand-image {
  width: 74px;
  height: 74px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--soft);
}

.brand-block h1,
.topbar h2,
.text-head h3,
.progress-panel h2 {
  margin: 0;
  letter-spacing: 0;
}

.brand-block h1 {
  font-size: 1.35rem;
}

.brand-block p,
.topbar p,
.text-head p {
  margin: 4px 0 0;
}

.eyebrow {
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.progress-panel,
.work-area,
.text-area,
.warning-gate {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.progress-panel {
  padding: 16px;
}

.progress-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.progress-heading h2 {
  font-size: 0.95rem;
}

.progress-track {
  height: 10px;
  margin: 12px 0 10px;
  border-radius: 999px;
  background: var(--soft);
  overflow: hidden;
}

.progress-bar {
  width: 0;
  height: 100%;
  background: var(--accent);
  transition: width 180ms ease;
}

.progress-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.station-nav {
  display: grid;
  gap: 8px;
}

.station-nav button {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 10px 12px;
  text-align: left;
  color: var(--ink);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
}

.station-nav button:hover,
.station-nav button.active {
  background: var(--soft);
  border-color: var(--line);
}

.station-nav button.unavailable {
  color: var(--muted);
  background: #f3f0e9;
}

.station-nav button.unavailable small {
  color: var(--warn);
}

.station-nav small {
  color: var(--muted);
}

.sidebar-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: auto;
}

.danger-button,
.ghost-button,
.icon-button,
.primary-button,
.mode-switch button {
  min-height: 38px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.danger-button {
  grid-column: 1 / -1;
  color: var(--danger);
}

.primary-button {
  padding: 0 14px;
  color: white;
  background: var(--accent);
  border-color: var(--accent);
}

.ghost-button {
  padding: 0 12px;
}

.main-panel {
  min-width: 0;
  padding: 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.topbar h2 {
  font-size: 1.7rem;
}

.mode-switch {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  padding: 4px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.mode-switch button {
  min-width: 88px;
  border: 0;
  background: transparent;
}

.mode-switch button.active {
  color: white;
  background: var(--accent-dark);
}

.warning-gate {
  padding: 16px;
  margin-bottom: 18px;
  border-color: #e3c88d;
  background: #fff7e8;
}

.warning-gate h3 {
  margin: 0 0 8px;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 18px;
  align-items: start;
}

.work-area,
.text-area {
  padding: 18px;
}

.text-area {
  position: sticky;
  top: 24px;
}

.intro-block {
  color: var(--muted);
  line-height: 1.5;
}

.material-picker,
.station-form,
.checklist-area,
.revision-area,
.repeatable-block {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.revision-area {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.material-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 12px;
  background: var(--soft);
  border-radius: 8px;
}

.task-unavailable {
  padding: 13px 14px;
  border: 1px solid #e3c88d;
  border-radius: 8px;
  background: #fff7e8;
  color: var(--warn);
  line-height: 1.45;
}

.task-reference {
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
  line-height: 1.45;
}

.task-chooser {
  display: grid;
  gap: 10px;
}

.task-reference p {
  margin: 6px 0 0;
  color: var(--muted);
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.field-block {
  display: grid;
  gap: 7px;
}

.field-block span,
.repeatable-head h3,
.checklist-area h3 {
  font-size: 0.92rem;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 11px;
  background: #fff;
  color: var(--ink);
}

textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.45;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible {
  outline: 3px solid rgba(31, 122, 102, 0.22);
  outline-offset: 2px;
}

.repeatable-head,
.text-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.reader-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 12px 0;
}

.reader-meta span {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--accent-dark);
  font-size: 0.82rem;
}

.text-reader {
  max-height: 58vh;
  overflow: auto;
  padding-right: 8px;
  line-height: 1.55;
}

.source-card {
  display: grid;
  gap: 9px;
  margin-bottom: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
}

.source-header {
  display: grid;
  gap: 2px;
}

.source-header p,
.citation-hint,
.source-note {
  margin: 0;
}

.source-header p:first-child {
  font-weight: 700;
}

.citation-hint {
  color: var(--ink);
  font-size: 0.9rem;
}

.source-note {
  color: var(--muted);
  font-size: 0.86rem;
}

.text-line {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.text-line span {
  color: var(--muted);
  font-size: 0.82rem;
}

.text-line p {
  margin: 0;
}

.empty-reader {
  color: var(--muted);
}

.prompt-actions {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.center-prompt-actions {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.center-prompt-actions[hidden] {
  display: none;
}

.prompt-actions h3,
.prompt-actions p {
  margin: 0;
}

.prompt-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.prompt-status {
  color: var(--accent-dark);
  line-height: 1.4;
}

.repeatable-list {
  display: grid;
  gap: 12px;
}

.repeatable-item {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
}

.repeatable-fields {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.checkbox-line {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.35;
}

.checkbox-line input {
  width: 18px;
  height: 18px;
  margin-top: 1px;
}

.tag-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0;
}

.tag-strip span,
.inline-list span {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--accent-dark);
  font-size: 0.82rem;
}

.prompt-reminder {
  padding: 12px;
  border-radius: 8px;
  background: #fff7e8;
  color: var(--warn);
}

.prompt-reminder p {
  margin: 5px 0 0;
}

.prompt-preview {
  min-height: 360px;
  max-height: 56vh;
  margin: 14px 0;
  padding: 14px;
  overflow: auto;
  white-space: pre-wrap;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101815;
  color: #edf8f3;
  line-height: 1.45;
}

.prompt-preview.is-hidden {
  display: none;
}

.manual-copy-panel {
  display: grid;
  gap: 8px;
  margin: 14px 0;
  padding: 12px;
  border: 1px solid #e3c88d;
  border-radius: 8px;
  background: #fff7e8;
  color: var(--warn);
}

.manual-copy-panel p {
  margin: 0;
}

.manual-copy-panel textarea {
  min-height: 190px;
  color: var(--ink);
  background: #fff;
}

.load-error {
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
}

@media (max-width: 1040px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

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

  .text-area {
    position: static;
  }
}

@media (max-width: 680px) {
  .main-panel,
  .sidebar {
    padding: 16px;
  }

  .topbar,
  .repeatable-head,
  .text-head {
    align-items: stretch;
    flex-direction: column;
  }

  .mode-switch {
    width: 100%;
  }

  .repeatable-fields {
    grid-template-columns: 1fr;
  }
}