/* ============================================================
   MarkedIt — Legal Pages
   Design direction: minimal & professional
   ============================================================ */

:root {
  /* Color */
  --color-bg: oklch(99% 0.003 250);
  --color-surface: oklch(100% 0 0);
  --color-surface-muted: oklch(97% 0.005 250);
  --color-border: oklch(91% 0.006 250);
  --color-text: oklch(24% 0.012 260);
  --color-text-muted: oklch(52% 0.012 260);
  --color-accent: oklch(58% 0.16 264);
  --color-accent-soft: oklch(95% 0.03 264);
  --color-warning-bg: oklch(97% 0.04 85);
  --color-warning-border: oklch(82% 0.1 85);
  --color-warning-text: oklch(42% 0.08 70);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --text-2xl: clamp(1.6rem, 1.3rem + 1.4vw, 2.25rem);
  --text-3xl: clamp(2rem, 1.5rem + 2.4vw, 3rem);
  --leading: 1.7;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-section: clamp(2.5rem, 2rem + 3vw, 4rem);

  /* Other */
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px oklch(0% 0 0 / 0.04), 0 1px 3px oklch(0% 0 0 / 0.06);
  --shadow-md: 0 4px 12px oklch(0% 0 0 / 0.06), 0 2px 4px oklch(0% 0 0 / 0.04);
  --max-content: 760px;
  --sidebar-width: 260px;
  --duration: 200ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: oklch(20% 0.012 260);
    --color-surface: oklch(24% 0.014 260);
    --color-surface-muted: oklch(27% 0.014 260);
    --color-border: oklch(34% 0.014 260);
    --color-text: oklch(93% 0.006 260);
    --color-text-muted: oklch(68% 0.012 260);
    --color-accent: oklch(72% 0.14 264);
    --color-accent-soft: oklch(32% 0.05 264);
    --color-warning-bg: oklch(32% 0.05 80);
    --color-warning-border: oklch(48% 0.08 80);
    --color-warning-text: oklch(86% 0.06 85);
    --shadow-sm: 0 1px 2px oklch(0% 0 0 / 0.3), 0 1px 3px oklch(0% 0 0 / 0.4);
    --shadow-md: 0 4px 12px oklch(0% 0 0 / 0.35), 0 2px 4px oklch(0% 0 0 / 0.25);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) clamp(var(--space-md), 4vw, var(--space-xl));
  background: color-mix(in oklch, var(--color-surface) 88%, transparent);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--color-accent);
  color: oklch(100% 0 0);
  font-size: 0.95rem;
  font-weight: 800;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-nav {
  display: flex;
  gap: var(--space-md);
}

.header-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--duration) var(--ease);
}

.header-nav a:hover,
.header-nav a[aria-current="page"] {
  color: var(--color-accent);
}

/* ---------- Language toggle ---------- */
.lang-toggle {
  display: inline-flex;
  padding: 3px;
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: 99px;
}

.lang-toggle button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.25rem 0.7rem;
  border-radius: 99px;
  cursor: pointer;
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease);
}

.lang-toggle button[aria-pressed="true"] {
  background: var(--color-surface);
  color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.lang-toggle button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: var(--space-xl);
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--space-section) clamp(var(--space-md), 4vw, var(--space-xl));
}

.toc {
  position: sticky;
  top: 90px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
}

.toc-title {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-sm);
  font-weight: 700;
}

.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
}

.toc li {
  counter-increment: toc;
}

.toc a {
  display: block;
  padding: 0.3rem var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: all var(--duration) var(--ease);
}

.toc a::before {
  content: counter(toc) ". ";
  color: var(--color-text-muted);
  opacity: 0.6;
}

.toc a:hover {
  color: var(--color-text);
  background: var(--color-surface-muted);
}

.toc a.is-active {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  background: var(--color-accent-soft);
  font-weight: 600;
}

/* ---------- Content ---------- */
.content {
  min-width: 0;
  max-width: var(--max-content);
}

.doc-header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.doc-eyebrow {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

h1 {
  font-size: var(--text-3xl);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-sm);
}

.doc-meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.section {
  margin-bottom: var(--space-section);
  scroll-margin-top: 90px;
}

h2 {
  font-size: var(--text-xl);
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-md);
  padding-top: var(--space-sm);
}

h2 .num {
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  margin-right: 0.4em;
}

h3 {
  font-size: var(--text-lg);
  margin: var(--space-lg) 0 var(--space-sm);
}

p {
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

ul,
ol.body-list {
  margin: 0 0 var(--space-md);
  padding-left: 1.4rem;
}

li {
  margin-bottom: var(--space-xs);
}

a {
  color: var(--color-accent);
  text-underline-offset: 2px;
}

strong {
  font-weight: 700;
}

/* ---------- Callouts ---------- */
.callout {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-radius: var(--radius);
  margin: 0 0 var(--space-lg);
  font-size: var(--text-sm);
  color: var(--color-warning-text);
}

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

.callout .icon {
  flex-shrink: 0;
  font-size: 1.1rem;
  line-height: 1.5;
}

.callout--info {
  background: var(--color-accent-soft);
  border-color: color-mix(in oklch, var(--color-accent) 35%, transparent);
  color: var(--color-text);
}

/* ---------- Definition rows ---------- */
.def {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: var(--space-md);
}

.def dt {
  background: var(--color-surface-muted);
  padding: var(--space-sm) var(--space-md);
  font-weight: 600;
  font-size: var(--text-sm);
}

.def dd {
  margin: 0;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

/* ---------- Placeholder marks ---------- */
.ph {
  background: var(--color-warning-bg);
  border-bottom: 1px dashed var(--color-warning-border);
  padding: 0 3px;
  border-radius: 3px;
  font-style: normal;
  color: var(--color-warning-text);
  font-weight: 600;
}

/* ---------- Language visibility ---------- */
[data-lang] {
  display: none;
}
html[lang="id"] [data-lang="id"],
html[lang="en"] [data-lang="en"] {
  display: revert;
}
html[lang="id"] [data-lang="id"].section,
html[lang="en"] [data-lang="en"].section {
  display: block;
}

.lang-toggle [data-lang] {
  display: inline-block;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: var(--space-xl) clamp(var(--space-md), 4vw, var(--space-xl));
  margin-top: var(--space-section);
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
}

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

/* ---------- Landing (index) ---------- */
.hero {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-section) clamp(var(--space-md), 4vw, var(--space-xl));
  text-align: center;
}

.hero p.lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

.doc-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  text-align: left;
}

.doc-card {
  display: block;
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.doc-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.doc-card h2 {
  font-size: var(--text-lg);
  margin: var(--space-sm) 0;
}

.doc-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.doc-card .card-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 1.3rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: oklch(100% 0 0);
  padding: var(--space-sm) var(--space-md);
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
}

.skip-link:focus {
  left: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .toc {
    position: static;
    max-height: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-md);
    background: var(--color-surface);
  }
  .header-nav {
    display: none;
  }
}

@media (max-width: 480px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}