:root {
  --ink: #211c19;
  --muted: #675d55;
  --page: #f7f3ed;
  --paper: #fffdf8;
  --paper-strong: #fbf6ed;
  --line: #ddd2c3;
  --line-strong: #c8b8a3;
  --accent: #8f1724;
  --accent-dark: #6f101a;
  --accent-soft: #f8e7e5;
  --charcoal: #27292a;
  --shadow: 0 18px 38px rgba(69, 52, 35, 0.11);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--page);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
  letter-spacing: 0;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(270px, 1fr) auto auto;
  align-items: center;
  gap: 26px;
  min-height: 64px;
  padding: 10px 40px;
  border-bottom: 1px solid #0f1010;
  background: var(--charcoal);
  color: #fff9f1;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  font-weight: 800;
  white-space: nowrap;
}

.brand-mark {
  display: inline-grid;
  width: 38px;
  height: 30px;
  place-items: center;
  border: 1px solid #e9b2b5;
  border-radius: 6px;
  color: #ffd6d9;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
  font-weight: 850;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 26px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
  font-weight: 750;
}

.main-nav a,
.header-action {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

.main-nav a:hover {
  color: #ffc9cf;
}

.header-action {
  justify-self: end;
  padding: 0 16px;
  border: 1px solid #d9adb0;
  border-radius: 6px;
  background: transparent;
  color: #fff9f1;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-weight: 800;
}

.header-action:hover {
  background: rgba(255, 214, 217, 0.12);
}

.page-shell {
  width: min(1410px, calc(100vw - 42px));
  margin: 0 auto;
  padding: 22px 0 56px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(270px, 370px);
  align-items: end;
  gap: 28px;
  margin-bottom: 18px;
}

.eyebrow,
.panel-kicker,
.section-heading span {
  margin: 0;
  color: var(--accent);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 5px 0 0;
  font-size: clamp(40px, 4.5vw, 64px);
  line-height: 1.02;
}

.hero-copy p:not(.eyebrow) {
  max-width: 850px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.38;
}

.hero-note {
  padding: 16px;
  border: 1px solid #deb4b2;
  border-left: 5px solid var(--accent);
  border-radius: var(--radius);
  background: #fff7f5;
}

.hero-note strong {
  display: block;
  margin-bottom: 6px;
  color: var(--accent-dark);
  font-family: ui-sans-serif, system-ui, sans-serif;
}

.hero-note p {
  margin: 0;
  color: #4f403b;
  line-height: 1.42;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(540px, 0.96fr) minmax(500px, 1.04fr);
  gap: 16px;
  align-items: start;
}

.tool-panel,
.result-panel,
.content-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.98);
  box-shadow: var(--shadow);
}

.tool-panel,
.result-panel {
  padding: 18px;
}

.panel-row {
  display: grid;
  grid-template-columns: 1fr 190px;
  gap: 16px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.mode-toggle {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: min(460px, 100%);
  margin-top: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  overflow: hidden;
}

.mode-toggle label {
  min-height: 42px;
  display: grid;
  place-items: center;
  background: #fffaf4;
  color: #463a34;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
  font-weight: 800;
}

.mode-toggle label:has(input:checked) {
  background: var(--accent);
  color: #fff;
}

.mode-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.reference-row label,
.field-group label {
  display: block;
  margin-bottom: 7px;
  color: #352b26;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
  font-weight: 800;
}

.reference-row input,
.field-group input,
.field-group textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 9px 10px;
}

.field-group textarea {
  min-height: 74px;
  resize: vertical;
}

.reference-row p,
.hint {
  margin: 6px 0 0;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  line-height: 1.4;
}

.source-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 12px 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  overflow: hidden;
}

.source-tab {
  min-width: 0;
  min-height: 44px;
  border: 0;
  border-right: 1px solid var(--line-strong);
  background: #fffaf4;
  color: #3f342f;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
  font-weight: 800;
}

.source-tab:last-child {
  border-right: 0;
}

.source-tab.is-active {
  background: var(--accent);
  color: #fff;
}

.field-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}

.field-group.is-wide {
  grid-column: 1 / -1;
}

.optional {
  color: var(--muted);
  font-weight: 650;
}

.form-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.access-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
  font-weight: 700;
}

.ghost-button,
.generate-button,
.text-button,
.download-button {
  min-height: 42px;
  border-radius: 6px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-weight: 850;
}

.ghost-button,
.text-button,
.download-button {
  border: 1px solid var(--line-strong);
  background: #fffaf4;
  color: var(--ink);
}

.generate-button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  padding: 0 18px;
}

.ghost-button,
.text-button,
.download-button {
  padding: 0 14px;
}

.generate-button:hover,
.source-tab.is-active:hover {
  background: var(--accent-dark);
}

.ghost-button:hover,
.text-button:hover,
.download-button:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.result-heading {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: start;
  margin-bottom: 13px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line);
}

.result-heading h2 {
  margin: 4px 0 0;
  font-size: 28px;
  line-height: 1.12;
}

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

.citation-output {
  min-height: 146px;
  padding: 18px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fffefb;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.72);
}

.citation-output + .citation-output {
  margin-top: 12px;
}

.citation-output h3 {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.citation-output p {
  margin: 0;
  font-size: 18px;
  line-height: 1.55;
}

.citation-output .empty {
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 15px;
}

.download-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  margin-top: 14px;
}

.download-row p {
  margin: 0;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
}

.review-zone {
  margin-top: 16px;
  padding: 15px;
  border-left: 5px solid var(--accent);
  border-radius: 6px;
  background: var(--accent-soft);
}

.review-zone h3 {
  margin: 0 0 8px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 16px;
}

.review-zone ul {
  margin: 0;
  padding-left: 20px;
  color: #4d3937;
  line-height: 1.5;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.content-card {
  padding: 22px;
}

.content-card h2 {
  margin: 5px 0 12px;
  font-size: 28px;
  line-height: 1.15;
}

.content-card p,
.steps {
  color: #4c423c;
  line-height: 1.66;
}

.steps {
  padding-left: 20px;
}

.examples-card,
.faq-card {
  grid-column: 1 / -1;
}

.example-table {
  display: grid;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
}

.example-row {
  display: grid;
  grid-template-columns: minmax(130px, 0.25fr) minmax(0, 1fr);
  gap: 16px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: #fffdf8;
}

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

.example-head {
  background: var(--paper-strong);
  color: var(--accent-dark);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-weight: 850;
}

.example-row p {
  margin: 0;
}

.checklist {
  display: grid;
  gap: 10px;
  margin-bottom: 14px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  color: #433934;
}

.checklist label {
  display: flex;
  gap: 10px;
  align-items: start;
}

.faq-list {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
}

.faq-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  width: 100%;
  min-height: 54px;
  padding: 0 16px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: #fffdf8;
  color: var(--ink);
  text-align: left;
  font-weight: 800;
}

.faq-chevron {
  color: var(--accent);
  font-family: ui-sans-serif, system-ui, sans-serif;
}

.faq-answer {
  display: none;
  padding: 0 16px 16px;
  border-bottom: 1px solid var(--line);
  background: #fffdf8;
  color: #4c423c;
  line-height: 1.55;
}

.faq-answer.is-open {
  display: block;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  max-width: min(320px, calc(100vw - 36px));
  padding: 12px 14px;
  border-radius: 7px;
  background: var(--charcoal);
  color: #fff;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1060px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .main-nav {
    display: none;
  }

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

@media (max-width: 720px) {
  .site-header {
    padding: 10px 16px;
    gap: 10px;
  }

  .brand {
    min-width: 0;
    font-size: 15px;
  }

  .brand span:last-child {
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .header-action {
    padding: 0 10px;
    font-size: 13px;
  }

  .page-shell {
    width: min(100% - 24px, 1410px);
    padding-top: 14px;
  }

  .hero-copy h1 {
    font-size: 38px;
  }

  .hero-copy p:not(.eyebrow) {
    font-size: 17px;
  }

  .tool-panel,
  .result-panel,
  .content-card {
    padding: 15px;
  }

  .panel-row,
  .field-list,
  .form-footer,
  .result-heading,
  .download-row,
  .example-row {
    grid-template-columns: 1fr;
  }

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

  .source-tab {
    border-bottom: 1px solid var(--line-strong);
  }

  .source-tab:nth-child(2n) {
    border-right: 0;
  }

  .source-tab:last-child {
    grid-column: 1 / -1;
    border-bottom: 0;
  }

  .result-actions {
    justify-content: stretch;
  }

  .result-actions button,
  .download-button,
  .ghost-button,
  .generate-button {
    width: 100%;
  }

  .citation-output p {
    font-size: 16px;
    overflow-wrap: anywhere;
  }
}