/* ==========================================================================
   Volux — shared site chrome
   Used by homepage (docs/index.html + locale dirs) + legal pages.
   Source of truth for design tokens, typography, topbar, footer, lang UI,
   button system, and prose styling for long-form content.
   ========================================================================== */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --paper: #F3EEE5;
  --paper-2: #EBE2D0;
  --ink: #141210;
  --ink-2: #3A342C;
  --ink-3: #6E675C;
  --vermilion: #E03C1A;
  --vermilion-dark: #B02E12;
  --amber: #D9A441;
  --signal: #2F6B4F;
  --rule: rgba(20,18,16,0.12);
  --rule-strong: rgba(20,18,16,0.24);
  --card: #FFFCF6;
  --shadow-soft: 0 1px 0 rgba(20,18,16,0.08), 0 14px 28px -18px rgba(20,18,16,0.25);
  --shadow-lg: 0 2px 0 rgba(20,18,16,0.18), 0 40px 60px -24px rgba(20,18,16,0.4);

  --font-display: 'Fraunces', ui-serif, Georgia, 'Times New Roman', serif;
  --font-body: 'IBM Plex Sans', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', monospace;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 200;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 240 240' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.08 0 0 0 0 0.07 0 0 0 0 0.06 0 0 0 0.85 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.06;
  mix-blend-mode: multiply;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }

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

.skip {
  position: absolute;
  top: -40px; left: 12px;
  background: var(--ink); color: var(--paper);
  padding: 10px 16px;
  z-index: 500;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.skip:focus { top: 12px; }

/* ==========================================================================
   Top bar
   ========================================================================== */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(243,238,229,0.82);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex; align-items: center; gap: 24px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  font-variation-settings: 'opsz' 14, 'SOFT' 100;
  letter-spacing: -0.02em;
  font-style: italic;
}
.brand::before {
  content: '';
  width: 10px; height: 10px;
  background: var(--vermilion);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(224,60,26,0.18);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 2px rgba(224,60,26,0.18); }
  50%     { box-shadow: 0 0 0 7px rgba(224,60,26,0); }
}
nav.top-nav {
  margin-left: auto;
  display: flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
nav.top-nav a {
  padding: 8px 12px;
  color: var(--ink-2);
  transition: color .2s;
}
nav.top-nav a:hover { color: var(--vermilion); }
nav.top-nav .install {
  background: var(--ink); color: var(--paper);
  padding: 10px 14px;
  margin-left: 6px;
  transition: background .2s;
}
nav.top-nav .install:hover { background: var(--vermilion); color: var(--paper); }

/* Hamburger toggle + mobile dropdown */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--rule-strong);
  color: var(--ink-2);
  padding: 8px 10px;
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.nav-toggle svg { width: 16px; height: 16px; display: block; }
.nav-toggle:hover { color: var(--vermilion); border-color: var(--vermilion); }
.nav-toggle[aria-expanded="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.nav-menu-mobile {
  display: none;
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: var(--paper);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  box-shadow: var(--shadow-soft);
  z-index: 90;
  padding: 4px 28px 12px;
}
.nav-menu-mobile.open { display: block; animation: nmIn .18s ease; }
@keyframes nmIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.nav-menu-mobile a {
  display: block;
  padding: 14px 4px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  letter-spacing: normal;
  text-transform: none;
  border-bottom: 1px solid var(--rule);
}
.nav-menu-mobile a:last-child { border-bottom: none; }
.nav-menu-mobile a:hover { color: var(--vermilion); }

@media (max-width: 820px) {
  nav.top-nav > a:not(.install) { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; order: -1; }
}

/* Top-bar language picker */
.lang-picker { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 10px !important;
  color: var(--ink-2) !important;
  border: 1px solid var(--rule-strong);
  background: transparent;
  cursor: pointer;
  font: inherit;
  letter-spacing: 0.08em;
  transition: color .2s, border-color .2s, background .2s;
}
.lang-btn:hover { color: var(--vermilion) !important; border-color: var(--vermilion); }
.lang-btn[aria-expanded="true"] { color: var(--paper) !important; background: var(--ink); border-color: var(--ink); }
.lang-btn svg { width: 14px; height: 14px; }
.lang-btn .code { font-size: 11px; font-weight: 500; }
.lang-btn .caret { font-size: 9px; opacity: .7; }
.lang-menu {
  position: absolute; top: calc(100% + 10px); right: 0;
  min-width: 170px;
  background: var(--card);
  border: 1px solid var(--rule-strong);
  box-shadow: var(--shadow-soft);
  padding: 6px;
  display: none;
  z-index: 120;
}
.lang-menu.open { display: block; animation: lmIn .15s ease; }
@keyframes lmIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.lang-menu a,
.lang-menu span.active {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: normal;
  text-transform: none;
  color: var(--ink) !important;
  border: none;
  transition: background .15s, color .15s;
}
.lang-menu a:hover { background: var(--paper-2); color: var(--vermilion) !important; }
.lang-menu a .hreflang,
.lang-menu span.active .hreflang {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.lang-menu span.active {
  background: var(--ink); color: var(--paper) !important;
}
.lang-menu span.active .hreflang { color: var(--amber); }
.lang-menu span.active::after { content: ''; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  --bg: var(--ink);
  --fg: var(--paper);
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 22px;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--bg);
  transition: transform .15s ease, background .2s, color .2s, border-color .2s;
  position: relative;
}
.btn:hover { transform: translate(-2px, -2px); }
.btn:active { transform: translate(0, 0); }
.btn.primary { --bg: var(--vermilion); --fg: #FFF6F2; border-color: var(--vermilion); }
.btn.primary:hover { --bg: var(--vermilion-dark); border-color: var(--vermilion-dark); }
.btn.ghost { --bg: transparent; --fg: var(--ink); border: 1px solid var(--ink); }
.btn.ghost:hover { --bg: var(--ink); --fg: var(--paper); }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
  background: var(--ink);
  color: rgba(243,238,229,0.7);
  padding: 80px 28px 40px;
  position: relative;
  z-index: 1;
}
.foot-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}
@media (max-width: 760px) {
  .foot-inner { grid-template-columns: 1fr 1fr; }
}
.foot-brand {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: 40px;
  letter-spacing: -0.02em;
  color: var(--paper);
  line-height: 1;
  margin-bottom: 14px;
  font-variation-settings: 'opsz' 96, 'SOFT' 50, 'WONK' 1;
}
.foot-tag { font-size: 14px; max-width: 28ch; line-height: 1.6; }
.foot-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(243,238,229,0.5);
  margin-bottom: 14px;
  font-weight: 500;
}
.foot-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.foot-col a { font-size: 14.5px; color: rgba(243,238,229,0.78); transition: color .2s; }
.foot-col a:hover { color: var(--amber); }
.foot-bottom {
  max-width: 1200px; margin: 48px auto 0;
  padding-top: 22px;
  border-top: 1px solid rgba(243,238,229,0.12);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(243,238,229,0.5);
}

/* ==========================================================================
   Language-suggestion banner (English root only)
   ========================================================================== */
.lang-suggest {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 150;
  max-width: 420px;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--vermilion);
  padding: 14px 16px 14px 18px;
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.4;
  box-shadow: var(--shadow-lg);
  animation: langIn .35s ease-out;
}
@keyframes langIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}
.lang-suggest::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--vermilion);
  box-shadow: 0 0 10px rgba(224,60,26,0.7);
  flex-shrink: 0;
}
.lang-suggest .msg { flex: 1; min-width: 0; }
.lang-suggest .view {
  background: var(--amber);
  color: var(--ink);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: none;
  flex-shrink: 0;
  transition: background .2s;
  text-decoration: none;
}
.lang-suggest .view:hover { background: #EAB35B; }
.lang-suggest .close {
  background: transparent;
  color: rgba(243,238,229,0.65);
  border: none;
  padding: 4px 6px;
  font-size: 16px;
  line-height: 1;
  flex-shrink: 0;
  transition: color .2s;
}
.lang-suggest .close:hover { color: var(--paper); }

@media (max-width: 560px) {
  .lang-suggest {
    left: 12px; right: 12px; bottom: 12px;
    max-width: none;
    font-size: 13.5px;
    padding: 12px 12px 12px 14px;
    flex-wrap: wrap;
  }
  .lang-suggest .msg { flex-basis: 100%; }
  .lang-suggest .view { margin-left: auto; }
}

/* ==========================================================================
   Motion — reveal-on-scroll stagger
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }
.reveal[data-d="5"] { transition-delay: .40s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
  .lang-suggest { animation: none; }
}

/* ==========================================================================
   Page hero (used by legal pages and other static pages)
   ========================================================================== */
.page-hero {
  max-width: 880px;
  margin: 0 auto;
  padding: 88px 28px 48px;
}
.page-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-2);
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 28px;
}
.page-hero .eyebrow::before {
  content: '';
  width: 36px; height: 1px;
  background: var(--vermilion);
}
.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(48px, 8vw, 108px);
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: var(--ink);
  font-variation-settings: 'opsz' 144, 'SOFT' 50, 'WONK' 1;
  margin-bottom: 18px;
  max-width: 14ch;
}
.page-hero h1 em {
  color: var(--vermilion);
  font-style: italic;
  font-variation-settings: 'opsz' 144, 'SOFT' 100, 'WONK' 1;
}
.page-hero .subtitle {
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.5;
  max-width: 56ch;
  color: var(--ink-2);
  margin-bottom: 28px;
}
.page-meta {
  display: flex; gap: 28px; flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}
.page-meta dt { color: var(--ink-3); }
.page-meta dd { color: var(--ink-2); margin-left: 8px; display: inline; }
.page-meta > div { display: flex; gap: 10px; }

/* ==========================================================================
   Prose (long-form legal/policy body)
   ========================================================================== */
.prose-wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 28px 120px;
}
.prose {
  max-width: 680px;
  margin: 0 auto;
  counter-reset: h2counter;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink-2);
}
.prose > * + * { margin-top: 1em; }
.prose h2 {
  counter-increment: h2counter;
  margin-top: 64px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-display);
  font-weight: 500;
  font-style: italic;
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ink);
  font-variation-settings: 'opsz' 72, 'SOFT' 50, 'WONK' 1;
}
.prose h2::before {
  content: "§ " counter(h2counter, decimal-leading-zero);
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--vermilion);
  margin-bottom: 12px;
  text-transform: uppercase;
}
.prose h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }

.prose h3 {
  margin-top: 32px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

.prose p {
  color: var(--ink-2);
}
.prose p strong { color: var(--ink); font-weight: 500; }
.prose em { font-style: italic; }

.prose a {
  color: var(--vermilion);
  text-decoration: none;
  border-bottom: 1px solid rgba(224,60,26,0.35);
  padding-bottom: 1px;
  transition: color .2s, border-color .2s;
}
.prose a:hover {
  color: var(--vermilion-dark);
  border-bottom-color: var(--vermilion);
}

.prose ul,
.prose ol {
  padding-left: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.prose li {
  position: relative;
  padding-left: 24px;
  line-height: 1.7;
}
.prose ul li::before {
  content: '◆';
  position: absolute;
  left: 0; top: 0;
  color: var(--vermilion);
  font-size: 10px;
  line-height: 1.9;
}
.prose ol { counter-reset: oli; }
.prose ol li {
  counter-increment: oli;
  padding-left: 36px;
}
.prose ol li::before {
  content: counter(oli, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--vermilion);
  line-height: 2.1;
}
.prose li > ul,
.prose li > ol { margin-top: 10px; }
.prose li strong { color: var(--ink); font-weight: 500; }

/* Callouts */
.prose .callout {
  margin: 28px 0;
  padding: 20px 24px;
  background: var(--card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--amber);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
}
.prose .callout > * + * { margin-top: 8px; }
.prose .callout strong { color: var(--ink); font-weight: 600; }
.prose .callout.dark {
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--vermilion);
  border-left-width: 3px;
  padding: 26px 28px;
}
.prose .callout.dark .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  display: block;
  margin-bottom: 10px;
}
.prose .callout.dark strong { color: var(--paper); }
.prose .callout.dark a { color: var(--amber); border-bottom-color: rgba(217,164,65,0.5); }
.prose .callout.dark a:hover { color: var(--paper); border-bottom-color: var(--paper); }
.prose .callout.signal { border-left-color: var(--signal); }

/* Tables */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}
.prose thead tr { border-bottom: 2px solid var(--ink); }
.prose th {
  text-align: left;
  padding: 12px 14px 12px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 500;
}
.prose td {
  padding: 14px 14px 14px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-2);
  vertical-align: top;
}
.prose tbody tr:last-child td { border-bottom: none; }

/* Decorative end-mark */
.prose-end {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--rule);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.prose-end::before {
  content: '◆';
  display: block;
  color: var(--vermilion);
  font-size: 12px;
  margin-bottom: 12px;
}