/* Mirrors the app design system (docs/design-system.md): flat cards, 1 px borders, no shadows,
   Inter type scale, radius md 10 for controls / lg 12 for cards, 4 pt spacing grid.
   Colors: app light theme, default palette "ocean" (src/theme/palettes). */
:root{
  --background:#f3f4f7;--surface:#fcfcfd;--surface-elevated:#ffffff;--surface-pressed:#e7eaef;
  --border:#d4dae2;--border-strong:#8394ac;
  --text-primary:#181e25;--text-secondary:#566881;
  --primary:#1975df;--on-primary:#ffffff;--primary-container:#d1e4fa;--on-primary-container:#0d3c73;
  --info:#1b78bb;--on-info:#ffffff;--warning:#f59f0a;--on-warning:#181e25;--danger:#d32234;--on-danger:#ffffff;
  --focus-ring:#1979e6;
  --radius-xs:4px;--radius-sm:6px;--radius-md:10px;--radius-lg:12px;
  --space-xs:4px;--space-sm:8px;--space-md:12px;--space-lg:16px;--space-xl:24px;--space-xxl:32px;--space-xxxl:48px;
  color-scheme:light;
}

@font-face{font-family:Inter;font-weight:400;font-display:swap;src:url(fonts/inter-400.woff2) format("woff2")}
@font-face{font-family:Inter;font-weight:500;font-display:swap;src:url(fonts/inter-500.woff2) format("woff2")}
@font-face{font-family:Inter;font-weight:600;font-display:swap;src:url(fonts/inter-600.woff2) format("woff2")}
@font-face{font-family:Inter;font-weight:700;font-display:swap;src:url(fonts/inter-700.woff2) format("woff2")}
@font-face{font-family:MDI;font-display:block;src:url(fonts/mdi.woff2) format("woff2")}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--background);color:var(--text-primary);font:400 15px/22px Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration-thickness:1px;text-underline-offset:2px}
:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}
p{margin:0}
p+p,p+ul,ul+p{margin-top:var(--space-sm)}
ul{margin:var(--space-sm) 0 0;padding-left:20px}
li+li{margin-top:var(--space-xs)}
strong{font-weight:600;color:var(--text-primary)}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px}
code{background:var(--surface-pressed);border-radius:var(--radius-xs);padding:1px 6px}

/* Icons: Material Design Icons, same set as the app. */
.mdi{font-family:MDI;font-style:normal;font-weight:400;line-height:1;display:inline-block;speak:never;-webkit-font-smoothing:antialiased}

/* Type scale (src/theme/typography.ts) */
.display{font-size:32px;line-height:40px;font-weight:700;letter-spacing:-.01em;margin:0}
.title{font-size:22px;line-height:28px;font-weight:600;margin:0}
.headline{font-size:17px;line-height:24px;font-weight:600;margin:0}
.label{font-size:13px;line-height:18px;font-weight:500}
.caption{font-size:12px;line-height:16px}
.secondary{color:var(--text-secondary)}

/* ---------- App bar ---------- */
.appbar{position:sticky;top:0;z-index:10;background:var(--surface);border-bottom:1px solid var(--border)}
.appbar-inner{max-width:1040px;margin:0 auto;padding:var(--space-sm) var(--space-lg);display:flex;align-items:center;gap:var(--space-lg)}
.brand{display:flex;align-items:center;gap:var(--space-sm);color:var(--text-primary);text-decoration:none;font-size:17px;line-height:24px;font-weight:700;flex:none}
.brand img{width:32px;height:32px;border-radius:var(--radius-sm)}
.site-nav{display:flex;gap:var(--space-xs);flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.site-nav::-webkit-scrollbar{display:none}
.site-nav a{display:flex;align-items:center;gap:6px;flex:none;min-height:40px;padding:0 var(--space-md);border-radius:var(--radius-md);color:var(--text-secondary);text-decoration:none;font-size:15px;font-weight:500}
.site-nav a .mdi{font-size:20px}
.site-nav a:hover{background:var(--surface-pressed);color:var(--text-primary)}
.site-nav a[aria-current="page"]{background:var(--primary-container);color:var(--on-primary-container);font-weight:600}

/* SegmentedControl */
.segmented{display:flex;flex:none;padding:3px;gap:2px;background:var(--surface-pressed);border-radius:var(--radius-md)}
.segmented button{font:inherit;font-size:13px;line-height:18px;font-weight:600;min-width:40px;min-height:32px;padding:0 var(--space-sm);border:0;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);cursor:pointer}
.segmented button[aria-pressed="true"]{background:var(--surface-elevated);color:var(--primary);box-shadow:inset 0 0 0 1px var(--border)}

@media (max-width:720px){
  .appbar-inner{flex-wrap:wrap;gap:var(--space-sm) var(--space-md)}
  .brand{flex:1}
  .site-nav{order:3;flex-basis:100%;margin:0 calc(-1 * var(--space-lg));padding:0 var(--space-lg) var(--space-xs)}
}

/* ---------- Page ---------- */
.page{max-width:1040px;margin:0 auto;padding:var(--space-xxl) var(--space-lg) var(--space-xxxl)}
.page-header{margin-bottom:var(--space-xl)}
.page-header .display+p{margin-top:var(--space-sm);color:var(--text-secondary);font-size:17px;line-height:24px}
.section-title{margin:var(--space-xxxl) 0 var(--space-md)}
.section-title p{margin-top:var(--space-xs);color:var(--text-secondary)}

/* Card (variants filled / outlined / tonal) */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-lg)}
.card.tonal{background:var(--primary-container);border-color:transparent;color:var(--on-primary-container)}
.card.tonal strong{color:var(--on-primary-container)}
.stack>*+*{margin-top:var(--space-md)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-md)}

/* Icon tile used at the top of feature cards */
.tile{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-md);background:var(--primary-container);color:var(--on-primary-container);font-size:22px;margin-bottom:var(--space-md)}
.card .headline+p,.card .headline+ul{margin-top:var(--space-xs);color:var(--text-secondary)}
.card ul{color:var(--text-secondary)}

/* Chip (assist / filter) */
.chips{display:flex;flex-wrap:wrap;gap:var(--space-sm)}
.chip{display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:0 var(--space-md);border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);color:var(--text-primary);font:inherit;font-size:13px;line-height:18px;font-weight:500;text-decoration:none;cursor:pointer}
.chip .mdi{font-size:16px;color:var(--primary)}
button.chip:hover{background:var(--surface-pressed)}
.chip[aria-pressed="true"]{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}
.chip[aria-pressed="true"] .mdi{color:var(--on-primary)}
.chip .chip-check{display:none}
.chip[aria-pressed="true"] .chip-check{display:inline-block}

/* Button (contained / outlined) */
.button{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);min-height:48px;padding:0 var(--space-xl);border-radius:var(--radius-md);font:inherit;font-size:15px;line-height:20px;font-weight:600;text-decoration:none;border:1px solid var(--primary)}
.button.contained{background:var(--primary);color:var(--on-primary)}
.button.outlined{background:transparent;color:var(--primary)}
.button .mdi{font-size:20px}

/* Accordion */
.accordion{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);scroll-margin-top:96px}
.accordion+.accordion{margin-top:var(--space-sm)}
.accordion summary{display:flex;align-items:center;gap:var(--space-md);min-height:56px;padding:var(--space-md) var(--space-lg);cursor:pointer;list-style:none;font-weight:600}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary .acc-title{flex:1}
.accordion summary .acc-chevron{font-size:24px;color:var(--text-secondary);transition:transform .2s ease}
.accordion[open] summary .acc-chevron{transform:rotate(180deg)}
.accordion .acc-body{padding:0 var(--space-lg) var(--space-lg);color:var(--text-secondary)}
@media (prefers-reduced-motion:reduce){.accordion summary .acc-chevron{transition:none}}

/* Long-form text (privacy, terms): one card per numbered section */
.prose .card .headline{margin-bottom:var(--space-sm);color:var(--text-primary)}
.prose .card{color:var(--text-secondary)}
.prose .card+.card{margin-top:var(--space-md)}
.prose table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;margin-top:var(--space-md);border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;line-height:20px}
.prose th{background:var(--surface-pressed);color:var(--text-primary);font-weight:600}
.prose td{min-width:128px}
.prose th,.prose td{text-align:left;vertical-align:top;padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--border)}
.prose tr:last-child td{border-bottom:0}
.page-header .display+.updated{display:flex;align-items:center;gap:6px;margin-top:var(--space-md);font-size:12px;line-height:16px}
.updated .mdi{font-size:16px}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);background:var(--surface)}
.site-footer-inner{max-width:1040px;margin:0 auto;padding:var(--space-xl) var(--space-lg);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-md);color:var(--text-secondary)}
.site-footer nav{display:flex;flex-wrap:wrap;gap:var(--space-xs) var(--space-lg)}
.site-footer a{color:var(--text-secondary);text-decoration:none;font-size:13px;font-weight:500}
.site-footer a:hover{color:var(--primary)}

/* Without JavaScript every language stays visible. */
.js [data-lang-block]:not(.active){display:none}
[hidden]{display:none!important}