:root {
  --bg: #fbfbfd;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #2563eb;
  --primary-2: #1d4ed8;
  --border: rgba(15, 23, 42, 0.12);
  --shadow: 0 12px 32px rgba(15, 23, 42, 0.10);

  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #ef4444;

  --radius: 14px;
  --radius-sm: 10px;
  --container: 1120px;
  --gutter: 16px;

  --step--1: 0.92rem;
  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: 1.35rem;
  --step-3: 1.75rem;
  --step-4: 2.35rem;
  --step-5: 3.05rem;
}

html[data-theme="dark"] {
  --bg: #0b1020;
  --card: #0f172a;
  --text: #e5e7eb;
  --muted: #a3b3c7;
  --primary: #60a5fa;
  --primary-2: #3b82f6;
  --border: rgba(226, 232, 240, 0.14);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 10% -10%, rgba(37, 99, 235, 0.12), transparent 60%),
    radial-gradient(1000px 500px at 90% 0%, rgba(16, 185, 129, 0.10), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.55;
  font-size: var(--step-0);
}

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

img, svg { display: block; max-width: 100%; }

code, pre, kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--bg), transparent 20%);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav,
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
}
.brand-mark {
  width: 28px;
  height: 28px;
}
.brand-text { font-size: 1.02rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links a {
  color: var(--muted);
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 10px;
}

.nav-links a[aria-current="page"] {
  color: var(--text);
  background: color-mix(in oklab, var(--primary), transparent 90%);
}

.nav-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  height: 38px;
  width: 38px;
  border-radius: 12px;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
}

.icon-btn:hover {
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.nav-toggle {
  display: none;
}

/* Footer */
.site-footer {
  margin-top: 72px;
  border-top: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg), #fff 8%);
}

.footer-inner {
  padding: 28px 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  color: var(--muted);
}

.footer-meta {
  color: var(--muted);
  font-size: var(--step--1);
}

/* Typography */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  margin: 0;
}

h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  margin: 0;
  line-height: 1.2;
}

h3 {
  font-size: var(--step-2);
  margin: 0;
}

p { margin: 0; color: var(--muted); }

.lead { font-size: var(--step-1); color: var(--muted); }

/* Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-weight: 700;
  cursor: pointer;
  text-decoration: none !important;
  white-space: nowrap;
}

.btn:focus-visible,
.icon-btn:focus-visible,
.nav-links a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--primary), transparent 55%);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(180deg, color-mix(in oklab, var(--primary), #fff 5%), var(--primary-2));
  border-color: color-mix(in oklab, var(--primary-2), #000 25%);
  color: white;
}

.btn-primary:hover { filter: brightness(1.03); }

.btn-secondary {
  background: var(--card);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
}
.btn-ghost:hover { background: color-mix(in oklab, var(--text), transparent 94%); color: var(--text); }

.card {
  background: color-mix(in oklab, var(--card), #fff 2%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.card-pad { padding: 18px; }

.grid {
  display: grid;
  gap: 14px;
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--text), transparent 94%);
  color: var(--text);
  padding: 4px 10px;
  font-weight: 700;
  font-size: 0.82rem;
}

.badge-success { background: color-mix(in oklab, var(--success), transparent 88%); }
.badge-warning { background: color-mix(in oklab, var(--warning), transparent 88%); }
.badge-danger { background: color-mix(in oklab, var(--danger), transparent 88%); }

.kbd {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card), #000 2%);
  color: var(--muted);
  font-size: 0.85rem;
}

.codeblock {
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card), #000 2%);
  border-radius: var(--radius);
  overflow: hidden;
}

.codeblock header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-weight: 700;
  font-size: 0.92rem;
}

.codeblock pre {
  margin: 0;
  padding: 14px 12px;
  overflow: auto;
  font-size: 0.92rem;
  line-height: 1.45;
  color: color-mix(in oklab, var(--text), #000 5%);
}

.callout {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--primary), transparent 92%);
  padding: 14px 14px;
}

.callout strong { color: var(--text); }

.section {
  padding: 56px 0;
}

.section-tight { padding: 38px 0; }

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: start;
}

.hero {
  padding: 64px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: start;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.bullet-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.muted { color: var(--muted); }
.text { color: var(--text); }

/* Forms */
label {
  display: grid;
  gap: 6px;
  font-weight: 700;
  color: var(--text);
}

input, select, textarea {
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 10px 12px;
  background: var(--card);
  color: var(--text);
}

.form {
  display: grid;
  gap: 12px;
}

.form-row {
  display: grid;
  gap: 12px;
}

.help {
  font-size: var(--step--1);
  color: var(--muted);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
}

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

th { color: var(--muted); font-size: 0.92rem; }

/* Accessibility */
.skip-link {
  position: absolute;
  left: 10px;
  top: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  transform: translateY(-160%);
  transition: transform 120ms ease;
  z-index: 999;
}

.skip-link:focus {
  transform: translateY(0);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 0;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
  font-weight: 850;
  color: var(--text);
}

.faq-item summary::-webkit-details-marker { display: none; }

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

.faq-item .faq-body {
  padding: 0 16px 14px;
  color: var(--muted);
}

/* Toast */
.toast-host {
  position: fixed;
  right: 14px;
  bottom: 14px;
  display: grid;
  gap: 10px;
  z-index: 999;
}

.toast {
  width: min(420px, calc(100vw - 28px));
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 12px 12px;
  display: grid;
  gap: 2px;
}

.toast-title { font-weight: 800; }
.toast-text { color: var(--muted); font-size: var(--step--1); }

/* Modal */
.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 400;
}

.backdrop[aria-hidden="false"] { display: flex; }

.modal {
  width: min(640px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.modal header {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.modal header strong { font-size: 1.05rem; }

.modal .modal-body { padding: 16px; }
.modal .modal-actions {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* Docs layout */
.docs-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-items: start;
}

.sidebar {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  padding: 12px;
}

.sidebar a {
  display: block;
  padding: 9px 10px;
  border-radius: 10px;
  color: var(--muted);
  font-weight: 700;
}

.sidebar a:hover { background: color-mix(in oklab, var(--text), transparent 94%); color: var(--text); text-decoration: none; }
.sidebar a[aria-current="page"] { background: color-mix(in oklab, var(--primary), transparent 90%); color: var(--text); }

.doc-content {
  padding: 18px;
}

.doc-content h1 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
.doc-content h2 { margin-top: 18px; }
.doc-content p { margin-top: 10px; }

.prose ul { color: var(--muted); }
.prose li { margin: 6px 0; }

/* Dashboard layout */
.app-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 18px 0;
}

.app-sidebar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
}

.app-sidebar a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 10px;
  border-radius: 12px;
  color: var(--muted);
  font-weight: 800;
}

.app-sidebar a:hover { background: color-mix(in oklab, var(--text), transparent 94%); color: var(--text); text-decoration: none; }
.app-sidebar a[aria-current="page"] { background: color-mix(in oklab, var(--primary), transparent 90%); color: var(--text); }

.app-main {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.app-main header {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.app-main .content { padding: 14px 16px; }

/* Responsive */
@media (min-width: 720px) {
  :root { --gutter: 20px; }
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr 1fr; }
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; gap: 18px; align-items: center; }
  .split { grid-template-columns: 1fr 1fr; gap: 18px; }
  .docs-layout { grid-template-columns: 280px 1fr; }
  .app-shell { grid-template-columns: 260px 1fr; }
  .form-row { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-grid; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 10px var(--gutter);
    background: color-mix(in oklab, var(--bg), #fff 10%);
    border-bottom: 1px solid var(--border);
  }
  .site-header[data-open="true"] .nav-links { display: grid; gap: 6px; }
  .nav-links a { padding: 10px 10px; }
}