/* ============================================================================
   Vastu Raksha — public marketing site.
   A self-contained design system, deliberately separate from the operator
   app's style.css. Warm, celestial, editorial: night-and-gold hero over a
   cream paper body. Commits to its own art direction (it does not follow the
   OS light/dark preference) because it is a brochure, not an application.
   ========================================================================== */

:root {
  /* Night — the hero and footer */
  --night-1: #1b1209;
  --night-2: #241708;
  --night-3: #2f1f10;
  /* Gold — the brand metal */
  --gold: #d9a441;
  --gold-lite: #f2d59a;
  --gold-deep: #b4763b;
  /* Paper — the body */
  --paper: #faf6ef;
  --paper-2: #f3ebdd;
  --paper-3: #ede1cd;
  --line: #e2d4bd;
  /* Ink — text on paper */
  --ink: #2a1f15;
  --ink-2: #5c4a38;
  --ink-3: #8a745c;
  /* Accents */
  --saffron: #c9622f;
  --maroon: #97331f;
  --cream-text: #f6ecdb;

  --serif: "Cormorant Garamond", Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --wrap: 1120px;
  --radius: 16px;
  --shadow: 0 18px 50px -22px rgba(43, 28, 12, .45);
  --shadow-sm: 0 8px 24px -14px rgba(43, 28, 12, .4);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.1; margin: 0; color: var(--ink); letter-spacing: .2px; }

a { color: var(--gold-deep); text-decoration: none; }
a:hover { color: var(--maroon); }

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

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: .28em;
  font-size: .72rem;
  font-weight: 600;
  color: var(--gold-deep);
}
.hero .eyebrow { color: var(--gold-lite); }

/* ---- buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  font-family: var(--sans); font-weight: 600; font-size: .98rem;
  padding: .82em 1.5em; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn-gold {
  background: linear-gradient(180deg, #e9b856, var(--gold) 60%, var(--gold-deep));
  color: #2a1a08;
  box-shadow: 0 10px 24px -10px rgba(180, 118, 59, .8);
}
.btn-gold:hover { transform: translateY(-2px); color: #2a1a08; box-shadow: 0 16px 30px -12px rgba(180, 118, 59, .9); }
.btn-ghost { background: transparent; border-color: rgba(242, 213, 154, .5); color: var(--gold-lite); }
.btn-ghost:hover { background: rgba(242, 213, 154, .1); color: var(--gold-lite); }
.btn-dark { background: var(--night-2); color: var(--gold-lite); }
.btn-dark:hover { background: var(--night-3); color: var(--gold-lite); transform: translateY(-2px); }
.btn-lg { padding: 1em 1.9em; font-size: 1.05rem; }

/* ---- top nav ------------------------------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(27, 18, 9, .82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(217, 164, 65, .18);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .emblem { flex: none; }
.brand .word { font-family: var(--serif); font-size: 1.35rem; font-weight: 600; color: var(--gold-lite); line-height: 1; }
.brand .sub { font-size: .62rem; letter-spacing: .22em; text-transform: uppercase; color: rgba(242, 213, 154, .6); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: rgba(246, 236, 219, .82); font-size: .92rem; font-weight: 500; }
.nav-links a:hover { color: var(--gold-lite); }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-links { position: fixed; inset: 72px 0 auto 0; flex-direction: column; gap: 0;
    background: var(--night-1); border-bottom: 1px solid rgba(217,164,65,.2);
    padding: 8px 24px 20px; transform: translateY(-140%); transition: transform .3s ease; }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { width: 100%; padding: 12px 0; border-bottom: 1px solid rgba(242,213,154,.08); }
  .nav-links .btn { margin-top: 12px; justify-content: center; }
  .nav-toggle { display: inline-flex; background: none; border: 0; color: var(--gold-lite); cursor: pointer; padding: 8px; }
}

/* ---- hero --------------------------------------------------------------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1200px 520px at 50% -8%, rgba(217, 164, 65, .22), transparent 60%),
    radial-gradient(760px 420px at 82% 12%, rgba(201, 98, 47, .16), transparent 62%),
    linear-gradient(180deg, var(--night-1), var(--night-2) 55%, var(--night-3));
  color: var(--cream-text);
  padding: 96px 0 108px;
}
/* a faint scatter of stars, drawn with layered radial-gradients — no images */
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 22%, rgba(255,255,255,.7), transparent),
    radial-gradient(1.4px 1.4px at 28% 62%, rgba(255,246,220,.6), transparent),
    radial-gradient(1.2px 1.2px at 46% 18%, rgba(255,255,255,.55), transparent),
    radial-gradient(1.5px 1.5px at 68% 44%, rgba(255,255,255,.6), transparent),
    radial-gradient(1.3px 1.3px at 82% 26%, rgba(255,246,220,.55), transparent),
    radial-gradient(1.2px 1.2px at 90% 66%, rgba(255,255,255,.5), transparent),
    radial-gradient(1.3px 1.3px at 8% 78%, rgba(255,255,255,.5), transparent);
}
.hero .wrap { position: relative; text-align: center; max-width: 880px; }
.hero-emblem { margin: 0 auto 26px; width: 92px; height: 92px; filter: drop-shadow(0 6px 18px rgba(217,164,65,.4)); }
@media (prefers-reduced-motion: no-preference) {
  .hero-emblem { animation: spin 90s linear infinite; }
}
@keyframes spin { to { transform: rotate(360deg); } }
.hero h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); color: #fff; letter-spacing: .3px; }
.hero h1 .accent { color: var(--gold-lite); font-style: italic; }
.hero .lead { margin: 22px auto 0; max-width: 640px; font-size: clamp(1.05rem, 2.2vw, 1.28rem); color: rgba(246, 236, 219, .82); }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 38px; }
.hero-note { margin-top: 22px; font-size: .86rem; color: rgba(246,236,219,.55); }

/* trust strip riding the hero base */
.trust {
  position: relative; z-index: 2;
  margin-top: -34px;
}
.trust .rail {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px 20px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
}
.trust .cell { text-align: center; padding: 4px 10px; border-right: 1px solid var(--line); }
.trust .cell:last-child { border-right: 0; }
.trust .cell b { display: block; font-family: var(--serif); font-size: 1.05rem; color: var(--ink); }
.trust .cell span { font-size: .78rem; color: var(--ink-3); }
@media (max-width: 720px) {
  .trust .rail { grid-template-columns: repeat(2, 1fr); }
  .trust .cell:nth-child(2n) { border-right: 0; }
  .trust .cell:nth-child(-n+2) { border-bottom: 1px solid var(--line); padding-bottom: 12px; }
  .trust .cell:nth-child(n+3) { padding-top: 12px; }
}

/* ---- section scaffolding ------------------------------------------------ */
section.band { padding: 88px 0; }
.band.alt { background: var(--paper-2); }
.band.dark { background: linear-gradient(180deg, var(--night-2), var(--night-3)); color: var(--cream-text); }
.band.dark h2, .band.dark h3 { color: #fff; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head h2 { font-size: clamp(2rem, 4.5vw, 3rem); margin-top: 12px; }
.section-head p { color: var(--ink-2); font-size: 1.1rem; margin-top: 14px; }
.band.dark .section-head p { color: rgba(246,236,219,.75); }

/* ---- the differentiator ------------------------------------------------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 32px; } }
.split h2 { font-size: clamp(1.9rem, 4vw, 2.7rem); }
.split p { color: var(--ink-2); font-size: 1.08rem; margin: 18px 0 0; }
.band.dark .split p { color: rgba(246,236,219,.8); }
.ticks { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 14px; }
.ticks li { position: relative; padding-left: 34px; color: var(--ink); }
.band.dark .ticks li { color: var(--cream-text); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 20px; height: 20px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--gold-lite), var(--gold-deep));
  box-shadow: 0 0 0 4px rgba(217,164,65,.14);
}
.ticks li::after {
  content: ""; position: absolute; left: 6px; top: 8px; width: 8px; height: 4px;
  border-left: 2px solid #3a2408; border-bottom: 2px solid #3a2408; transform: rotate(-45deg);
}

/* provenance chip demo card */
.evidence-card {
  background: linear-gradient(180deg, #fffdf8, var(--paper)); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px;
}
.evidence-card .row { display: flex; align-items: center; gap: 12px; padding: 13px 0; border-bottom: 1px dashed var(--line); }
.evidence-card .row:last-child { border-bottom: 0; }
.chip { font-size: .68rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.chip.classical { background: #e7f0e2; color: #3f6b32; }
.chip.computed { background: #e5edf6; color: #33597f; }
.chip.judgment { background: #f6ecda; color: #9a6a1a; }
.evidence-card .row span { color: var(--ink-2); font-size: .96rem; }

/* ---- readings grid ------------------------------------------------------ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .cards { grid-template-columns: 1fr; } }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold), var(--gold-lite)); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card .glyph { width: 46px; height: 46px; color: var(--gold-deep); margin-bottom: 16px; }
.card h3 { font-size: 1.5rem; }
.card p { color: var(--ink-2); margin: 10px 0 0; font-size: .98rem; }
.card .price { margin-top: 16px; font-family: var(--serif); font-size: 1.3rem; color: var(--maroon); font-weight: 600; }

/* ---- how it works ------------------------------------------------------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
@media (max-width: 860px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px) { .steps { grid-template-columns: 1fr; } }
.step { text-align: center; padding: 8px; }
.step .num {
  counter-increment: step; width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%;
  display: grid; place-items: center; font-family: var(--serif); font-size: 1.5rem; font-weight: 700;
  color: var(--gold-lite); background: linear-gradient(180deg, var(--night-2), var(--night-3));
  box-shadow: 0 0 0 6px rgba(217,164,65,.12); }
.step .num::before { content: counter(step); }
.step h4 { font-size: 1.2rem; }
.step p { color: rgba(246,236,219,.7); font-size: .94rem; margin: 8px 0 0; }
.band:not(.dark) .step p { color: var(--ink-2); }

/* ---- pricing ------------------------------------------------------------ */
.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
@media (max-width: 900px) { .pricing { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .pricing { grid-template-columns: 1fr; } }
.price-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; display: flex; flex-direction: column; box-shadow: var(--shadow-sm);
}
.price-card.feature {
  background: linear-gradient(180deg, var(--night-2), var(--night-3)); color: var(--cream-text);
  border-color: var(--gold-deep); box-shadow: var(--shadow); transform: scale(1.03);
}
@media (max-width: 620px) { .price-card.feature { transform: none; } }
.price-card.feature h3, .price-card.feature .amount { color: #fff; }
.price-card .tagline { font-size: .82rem; text-transform: uppercase; letter-spacing: .14em; color: var(--gold-deep); }
.price-card.feature .tagline { color: var(--gold-lite); }
.price-card h3 { font-size: 1.6rem; margin: 6px 0 4px; }
.price-card .amount { font-family: var(--serif); font-size: 2.4rem; font-weight: 600; color: var(--ink); margin: 12px 0 4px; }
.price-card .amount small { font-size: .95rem; color: var(--ink-3); font-family: var(--sans); }
.price-card.feature .amount small { color: rgba(246,236,219,.6); }
.price-card ul { list-style: none; padding: 0; margin: 18px 0 24px; display: grid; gap: 9px; flex: 1; }
.price-card li { padding-left: 24px; position: relative; font-size: .95rem; color: var(--ink-2); }
.price-card.feature li { color: rgba(246,236,219,.85); }
.price-card li::before { content: "✦"; position: absolute; left: 0; color: var(--gold-deep); }
.price-card.feature li::before { color: var(--gold-lite); }
.badge-best { align-self: flex-start; background: var(--gold); color: #2a1a08; font-size: .68rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: .1em; padding: 4px 10px; border-radius: 999px; margin-bottom: 6px; }

/* ---- faq ---------------------------------------------------------------- */
.faq { max-width: 800px; margin: 0 auto; display: grid; gap: 14px; }
details.qa {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 4px 22px;
  box-shadow: var(--shadow-sm);
}
details.qa summary {
  cursor: pointer; list-style: none; padding: 18px 0; font-family: var(--serif); font-size: 1.2rem;
  color: var(--ink); display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
details.qa summary::-webkit-details-marker { display: none; }
details.qa summary::after { content: "+"; color: var(--gold-deep); font-size: 1.5rem; transition: transform .2s; }
details.qa[open] summary::after { transform: rotate(45deg); }
details.qa p { margin: 0 0 20px; color: var(--ink-2); }

/* ---- final CTA ---------------------------------------------------------- */
.cta-final { text-align: center; }
.cta-final h2 { font-size: clamp(2rem, 5vw, 3.2rem); color: #fff; }
.cta-final p { color: rgba(246,236,219,.78); max-width: 560px; margin: 16px auto 32px; font-size: 1.12rem; }

/* ---- footer ------------------------------------------------------------- */
.site-footer { background: var(--night-1); color: rgba(246,236,219,.72); padding: 66px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr; gap: 30px; } }
.site-footer h5 { font-family: var(--sans); text-transform: uppercase; letter-spacing: .18em; font-size: .74rem;
  color: var(--gold-lite); margin: 0 0 16px; }
.site-footer a { color: rgba(246,236,219,.72); display: block; padding: 5px 0; font-size: .94rem; }
.site-footer a:hover { color: var(--gold-lite); }
.footer-brand .word { font-family: var(--serif); font-size: 1.4rem; color: var(--gold-lite); }
.footer-brand p { margin: 12px 0 0; max-width: 320px; font-size: .92rem; color: rgba(246,236,219,.6); }
.footer-contact { font-style: normal; font-size: .94rem; line-height: 1.9; }
.footer-bottom { border-top: 1px solid rgba(242,213,154,.14); margin-top: 44px; padding-top: 22px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: .84rem; color: rgba(246,236,219,.5); }
.footer-bottom .legal-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-bottom a { display: inline; padding: 0; }

/* ---- legal / document pages -------------------------------------------- */
.doc-hero { background: linear-gradient(180deg, var(--night-1), var(--night-3)); color: var(--cream-text);
  padding: 64px 0 56px; text-align: center; }
.doc-hero h1 { color: #fff; font-size: clamp(2.2rem, 5vw, 3.2rem); }
.doc-hero p { color: rgba(246,236,219,.7); margin-top: 12px; }
.doc { max-width: 820px; margin: 0 auto; padding: 60px 24px 90px; }
.doc h2 { font-size: 1.5rem; margin: 40px 0 12px; padding-top: 8px; }
.doc h2:first-child { margin-top: 0; }
.doc h3 { font-size: 1.15rem; margin: 24px 0 8px; }
.doc p, .doc li { color: var(--ink-2); }
.doc p { margin: 0 0 14px; }
.doc ul, .doc ol { margin: 0 0 18px; padding-left: 22px; }
.doc li { margin-bottom: 8px; }
.doc a { text-decoration: underline; }
.doc .updated { color: var(--ink-3); font-size: .9rem; }
.doc .note {
  background: var(--paper-2); border-left: 4px solid var(--gold); border-radius: 8px;
  padding: 16px 20px; margin: 22px 0; color: var(--ink-2); font-size: .95rem;
}
.doc table.kv { border-collapse: collapse; width: 100%; margin: 8px 0 24px; }
.doc table.kv td { padding: 12px 14px; border: 1px solid var(--line); vertical-align: top; }
.doc table.kv td:first-child { width: 200px; font-weight: 600; color: var(--ink); background: var(--paper-2); }

/* contact cards */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin: 8px 0 8px; }
@media (max-width: 720px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; text-align: center; box-shadow: var(--shadow-sm); }
.contact-card .glyph { width: 34px; height: 34px; color: var(--gold-deep); margin: 0 auto 12px; }
.contact-card h3 { font-size: 1.15rem; }
.contact-card a, .contact-card p { margin-top: 6px; color: var(--ink-2); text-decoration: none; }

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }