/* Duskline documentation site. Plain CSS, no build step, system fonts only. */

:root {
  color-scheme: light;
  --bg: #fbf8f4;
  --surface: #f4efe9;
  --surface-strong: #ece4da;
  --fg: #2b211c;
  --muted: #64564d;
  --border: #e2d9cf;
  --accent: #9a4f2e;
  --accent-hover: #7f3f23;
  --focus: #9a4f2e;
  --success-bg: #eef3ea;
  --success-fg: #2f5130;
  --error-bg: #f8ebe6;
  --error-fg: #8a2f1c;
  --note-bg: #f6efe6;
  --warn-bg: #fbeee4;
  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --radius: 6px;
  --sidebar: 264px;
  --content: 760px;
  --header-h: 60px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

/* ---------- Accessibility helpers ---------- */

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--fg);
  color: #fff;
  border-radius: var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  top: 12px;
}

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

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- Top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--header-h);
  padding: 0 16px;
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: saturate(1.2) blur(6px);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--fg);
  text-decoration: none;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.brand__tag {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.topbar__links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar__links a {
  color: var(--fg);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.92rem;
}

.topbar__links a:hover {
  background: var(--surface);
}

.topbar__links .topbar__cta {
  background: var(--fg);
  color: #fff;
}

.topbar__links .topbar__cta:hover {
  background: #47382f;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--fg);
  font: inherit;
  font-size: 0.92rem;
  cursor: pointer;
}

.nav-toggle svg {
  width: 18px;
  height: 18px;
}

/* ---------- Layout ---------- */

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  max-width: calc(var(--sidebar) + var(--content) + 160px);
  margin: 0 auto;
}

.sidebar {
  position: sticky;
  top: var(--header-h);
  align-self: start;
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 28px 16px 40px 16px;
  border-right: 1px solid var(--border);
}

.sidebar__group + .sidebar__group {
  margin-top: 22px;
}

.sidebar__label {
  margin: 0 0 6px 12px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar a {
  display: block;
  padding: 7px 12px;
  border-radius: var(--radius);
  color: var(--fg);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.4;
}

.sidebar a:hover {
  background: var(--surface);
}

.sidebar a[aria-current="page"] {
  background: var(--surface-strong);
  color: var(--accent-hover);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--accent);
}

.sidebar__version {
  margin: 28px 12px 0;
  font-size: 0.82rem;
  color: var(--muted);
}

main {
  min-width: 0;
  padding: 40px 48px 80px;
}

.content {
  max-width: var(--content);
}

/* ---------- Typography ---------- */

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  color: var(--fg);
}

h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.7rem;
  margin: 56px 0 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

h3 {
  font-size: 1.28rem;
  margin: 32px 0 8px;
}

h4 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  margin: 24px 0 6px;
}

p,
ul,
ol,
dl,
table {
  margin: 0 0 16px;
}

ul,
ol {
  padding-left: 1.3em;
}

li + li {
  margin-top: 4px;
}

a {
  color: var(--accent);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-hover);
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 640px;
}

code,
kbd {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.08em 0.36em;
  overflow-wrap: anywhere;
}

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 0.88rem;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
}

.path {
  font-weight: 600;
}

.setting {
  font-weight: 600;
}

/* ---------- Setting lists ---------- */

.settings {
  margin: 0 0 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.settings dl {
  margin: 0;
}

.settings dl > div {
  display: grid;
  grid-template-columns: minmax(150px, 34%) 1fr;
  gap: 4px 20px;
  padding: 12px 16px;
}

.settings dl > div + div {
  border-top: 1px solid var(--border);
}

.settings dt {
  font-weight: 600;
}

.settings dd {
  margin: 0;
  color: var(--fg);
}

.settings .meta {
  display: block;
  margin-top: 2px;
  font-size: 0.86rem;
  color: var(--muted);
}

.settings .subhead {
  margin: 0;
  padding: 8px 16px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.settings .subhead:first-child {
  border-top: 0;
  border-radius: var(--radius) var(--radius) 0 0;
}

/* ---------- Callouts ---------- */

.callout {
  margin: 0 0 20px;
  padding: 14px 18px;
  border-radius: var(--radius);
  border-left: 4px solid var(--accent);
  background: var(--note-bg);
}

.callout p:last-child,
.callout ul:last-child {
  margin-bottom: 0;
}

.callout__title {
  display: block;
  margin-bottom: 4px;
  font-weight: 600;
}

.callout--warning {
  background: var(--warn-bg);
  border-left-color: #8a2f1c;
}

/* ---------- Cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.card-grid li + li {
  margin-top: 0;
}

.card {
  height: 100%;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card h3 {
  margin: 0 0 6px;
  font-size: 1.12rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

a.card {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: border-color 150ms ease, transform 150ms ease;
}

a.card:hover {
  border-color: var(--accent);
}

a.card h3 {
  color: var(--accent);
}

.hero {
  margin: 0 0 32px;
  padding: 36px 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #f4ece2 0%, #efdccd 55%, #e3c3ad 100%);
}

.hero h1 {
  margin-bottom: 10px;
}

.hero .lead {
  color: #4f4038;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.hero__meta li + li {
  margin-top: 0;
}

.pill {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
}

.toc {
  margin: 0 0 28px;
  padding: 16px 20px;
  background: var(--surface);
  border-radius: var(--radius);
}

.toc p {
  margin: 0 0 6px;
  font-weight: 600;
}

.toc ul {
  margin: 0;
  columns: 2 220px;
  column-gap: 24px;
}

.toc li {
  break-inside: avoid;
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 44px;
  margin-bottom: 14px;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--fg);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.88rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--surface);
  font-weight: 600;
}

.table-wrap {
  overflow-x: auto;
  margin: 0 0 20px;
}

.table-wrap table {
  margin: 0;
}

/* ---------- FAQ ---------- */

.faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  padding: 14px 18px;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  list-style-position: outside;
}

.faq summary::-webkit-details-marker {
  color: var(--accent);
}

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

.faq .answer {
  padding: 14px 18px 4px;
}

/* ---------- Forms ---------- */

.form {
  margin: 0 0 24px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  margin: 0 0 18px;
}

.field label,
.field .label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
}

.field .hint {
  display: block;
  margin: -2px 0 6px;
  font-size: 0.88rem;
  color: var(--muted);
}

.field .required {
  color: var(--error-fg);
}

.field input[type="text"],
.field input[type="email"],
.field input[type="url"],
.field select,
.field textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #b9aa9c;
  border-radius: var(--radius);
  background: #fff;
  color: var(--fg);
  font: inherit;
}

.field textarea {
  min-height: 180px;
  resize: vertical;
}

.field input[type="file"] {
  display: block;
  width: 100%;
  padding: 10px;
  border: 1px dashed #b9aa9c;
  border-radius: var(--radius);
  background: var(--bg);
  font: inherit;
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 1px;
  border-color: var(--accent);
}

.field [aria-invalid="true"] {
  border-color: var(--error-fg);
}

.field__error {
  display: block;
  margin-top: 6px;
  font-size: 0.9rem;
  color: var(--error-fg);
}

.field__error:empty {
  display: none;
}

.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 28px;
  border: 0;
  border-radius: 999px;
  background: var(--fg);
  color: #fff;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  background: #47382f;
  color: #fff;
}

.button[disabled] {
  opacity: 0.65;
  cursor: progress;
}

.form-status {
  margin: 0 0 18px;
  padding: 14px 18px;
  border-radius: var(--radius);
}

.form-status:empty {
  display: none;
}

.form-status--success {
  background: var(--success-bg);
  color: var(--success-fg);
}

.form-status--error {
  background: var(--error-bg);
  color: var(--error-fg);
}

/* Results of a form post made without JavaScript (the API redirects to #request-sent or #request-error). */
.target-note {
  display: none;
}

.target-note:target {
  display: block;
}

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 64px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer a {
  color: var(--muted);
}

.pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
}

.pager a {
  flex: 1;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  text-decoration: none;
}

.pager a:hover {
  border-color: var(--accent);
}

.pager span {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
}

.pager .pager__next {
  text-align: right;
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .topbar__links a:not(.topbar__cta) {
    display: none;
  }

  .layout {
    display: block;
  }

  .sidebar {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    height: auto;
    background: var(--bg);
    border-right: 0;
    padding: 20px 16px 40px;
    display: none;
  }

  .sidebar.is-open {
    display: block;
  }

  html.nav-open {
    overflow: hidden;
  }

  main {
    padding: 28px 16px 64px;
  }

  h2 {
    margin-top: 44px;
  }

  .hero {
    padding: 28px 20px;
  }
}

@media (max-width: 600px) {
  .brand__tag {
    display: none;
  }

  .settings dl > div {
    grid-template-columns: 1fr;
  }

  .form {
    padding: 20px 16px;
  }

  .form__row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .pager {
    flex-direction: column;
  }
}

/* No-JS fallback: keep the sidebar reachable on small screens. */
.no-js .nav-toggle {
  display: none;
}

@media (max-width: 960px) {
  .no-js .sidebar {
    display: block;
    position: static;
    border-bottom: 1px solid var(--border);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .topbar,
  .sidebar,
  .pager,
  .skip-link {
    display: none !important;
  }

  .layout {
    display: block;
  }

  main {
    padding: 0;
  }
}