:root {
  --bg: #f6f1e8;
  --bg-strong: #fffaf3;
  --bg-soft: rgba(255, 250, 244, 0.88);
  --line: rgba(53, 67, 61, 0.14);
  --line-strong: rgba(53, 67, 61, 0.24);
  --text: #1d2421;
  --muted: #5c6a65;
  --accent: #0f766e;
  --accent-strong: #0b5d57;
  --danger: #b42318;
  --danger-bg: rgba(180, 35, 24, 0.08);
  --warning: #b26a00;
  --shadow: 0 20px 60px rgba(58, 47, 32, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
  --sans: 'IBM Plex Sans', 'Avenir Next', 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(210, 146, 74, 0.12), transparent 24%),
    linear-gradient(180deg, #fcf8f1 0%, var(--bg) 55%, #efe5d7 100%);
}

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

input,
textarea,
pre,
code {
  font-family: var(--mono);
}

code {
  font-size: 0.94em;
}

.page-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 18px 72px;
  display: grid;
  gap: 20px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--bg-soft);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.inset-panel {
  background: var(--bg-strong);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  box-shadow: none;
}

.hero,
.quick-start,
.playground,
.how-it-works,
.api-reference,
.backend-jwt,
.deployment-notes,
.known-issues {
  padding: 24px;
}

.section-grid,
.playground-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 20px;
  align-items: start;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: end;
  margin-bottom: 20px;
}

.section-intro {
  max-width: 48ch;
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.doc-prose,
.doc-code,
.card-copy,
.mini-output,
#latest-request,
#latest-response {
  line-height: 1.6;
}

.doc-prose h1,
.doc-prose h2,
.panel h2,
.panel h3 {
  margin: 0;
  letter-spacing: -0.03em;
  font-weight: 650;
}

.doc-prose p,
.card-copy,
.state-block,
.doc-list {
  color: var(--muted);
}

.eyebrow,
.step-label,
.state-label {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.74rem;
  color: var(--muted);
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 0.94;
  max-width: 10ch;
}

.hero-copy-block {
  display: grid;
  gap: 14px;
}

.hero-copy-block p {
  margin: 0;
}

.lede {
  max-width: 26ch;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text);
}

.hero-side,
.card,
.state-column,
.doc-code-card {
  padding: 20px;
}

.doc-stack {
  display: grid;
  gap: 14px;
}

.capability-list,
.doc-list {
  margin: 0;
  padding-left: 1.2rem;
}

.capability-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.capability-list li {
  padding: 8px 12px;
  border: 1px solid rgba(15, 118, 110, 0.18);
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.08);
  color: var(--accent-strong);
  font-size: 0.92rem;
  font-weight: 600;
}

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

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

.compact-head {
  margin-bottom: 12px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 74px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
}

.status-pill.loading {
  background: rgba(178, 106, 0, 0.15);
  color: var(--warning);
}

.status-pill.error {
  background: var(--danger-bg);
  color: var(--danger);
}

.status-pill.success {
  background: rgba(15, 118, 110, 0.14);
}

.field,
.state-block {
  display: grid;
  gap: 8px;
}

.compact-field {
  margin-top: 10px;
}

.field span,
.state-label {
  font-size: 0.84rem;
}

input,
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(29, 36, 33, 0.12);
  border-radius: 14px;
  background: #fffdf8;
  color: var(--text);
}

textarea {
  resize: vertical;
}

pre {
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.doc-code,
.mini-output,
#latest-request,
#latest-response {
  padding: 14px;
  border-radius: var(--radius-md);
  background: rgba(16, 24, 40, 0.94);
  color: #e7efec;
  font-size: 0.86rem;
}

.inline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.92rem;
}

.callout {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-left: 4px solid rgba(15, 118, 110, 0.3);
  border-radius: 12px;
  background: rgba(15, 118, 110, 0.08);
  color: var(--text);
}

.callout:empty {
  display: none;
}

.callout-error {
  border-left-color: rgba(180, 35, 24, 0.42);
  background: var(--danger-bg);
  color: var(--danger);
}

.flow-column {
  display: grid;
  gap: 16px;
}

.state-column {
  position: sticky;
  top: 20px;
}

.primary-button,
.ghost-button {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition:
    transform 120ms ease,
    opacity 120ms ease,
    background 120ms ease;
}

.primary-button {
  margin-top: 18px;
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--accent) 0%, #155e75 100%);
  color: #f6faf9;
  font-weight: 700;
}

.ghost-button {
  padding: 10px 14px;
  background: rgba(29, 36, 33, 0.06);
  color: var(--text);
}

.primary-button:hover,
.ghost-button:hover,
summary:hover {
  transform: translateY(-1px);
}

.primary-button:disabled,
.ghost-button:disabled {
  opacity: 0.56;
  cursor: not-allowed;
  transform: none;
}

.doc-details {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 253, 248, 0.88);
}

.doc-details > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 600;
  color: var(--text);
}

.doc-details > summary::-webkit-details-marker {
  display: none;
}

.doc-details > summary::after {
  content: '+';
  float: right;
  color: var(--accent-strong);
  font-weight: 700;
}

.doc-details[open] > summary {
  border-bottom: 1px solid var(--line);
}

.doc-details[open] > summary::after {
  content: '–';
}

.doc-details > :not(summary) {
  padding: 14px 16px 16px;
}

.inline-details {
  margin-top: 18px;
}

.api-placeholder {
  padding: 18px;
}

@media (max-width: 980px) {
  .section-grid,
  .playground-grid {
    grid-template-columns: 1fr;
  }

  .state-column {
    position: static;
  }

  .section-heading {
    flex-direction: column;
    align-items: start;
  }

  .hero h1,
  .lede {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding-inline: 14px;
    padding-top: 18px;
  }

  .hero,
  .quick-start,
  .playground,
  .how-it-works,
  .api-reference,
  .backend-jwt,
  .deployment-notes,
  .known-issues,
  .hero-side,
  .card,
  .state-column,
  .doc-code-card {
    padding: 18px;
    border-radius: 20px;
  }

  .card-head {
    flex-direction: column;
  }

  .capability-list {
    gap: 8px;
  }
}