/* Scribers — site styles.
 *
 * Direction "Nocturne" (spec §5): indigo ground and chalk text on the
 * marketing pages; the same tokens inverted to paper and ink on anything a
 * visitor reads for long or fills in (<html data-tone="light">).
 *
 * Full width means edge-to-edge colour bands; text sits on a 1480px grid and
 * never runs the whole viewport.
 */

/* ---------- tokens ---------- */
:root {
  --indigo: #1b2a6b;
  --deep: #141f52;
  --raised: #223173;
  --rim: #3a4b9c;
  --chalk: #f4efe2;
  --saffron: #f5a623;
  --madder: #e24b3f;
  --paper: #f4efe2;
  --ink: #141f52;

  /* semantic, indigo tone */
  --bg: var(--indigo);
  --bg-band: var(--deep);
  --bg-card: var(--raised);
  --line: var(--rim);
  --fg: var(--chalk);
  --fg-soft: rgba(244, 239, 226, 0.72);
  --fg-faint: rgba(244, 239, 226, 0.5);
  --accent: var(--saffron);
  --accent-fg: var(--deep);
  --danger: var(--madder);
  --focus: var(--saffron);

  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --tamil-serif: "Noto Serif Tamil", "Noto Sans Tamil", serif;
  --tamil-sans: "Noto Sans Tamil", system-ui, sans-serif;
  --mono: Consolas, Menlo, "SF Mono", monospace;

  --wrap: min(1480px, 92vw);
  --radius: 10px;
}

:root[data-tone="light"] {
  --bg: var(--paper);
  --bg-band: #ffffff;
  --bg-card: #ffffff;
  --line: #d9d2bf;
  --fg: var(--ink);
  --fg-soft: rgba(20, 31, 82, 0.72);
  --fg-faint: rgba(20, 31, 82, 0.5);
  --accent: var(--saffron);
  --accent-fg: var(--deep);
  --focus: var(--indigo);
}

@font-face {
  font-family: "Noto Serif Tamil";
  src: url("../fonts/NotoSerifTamil.woff2") format("woff2");
  font-display: swap;
}
@font-face {
  font-family: "Noto Sans Tamil";
  src: url("../fonts/NotoSansTamil.woff2") format("woff2");
  font-display: swap;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }
body {
  margin: 0;
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
  overflow-x: hidden;
}
:root:not([data-tone="light"]) body {
  background-image: radial-gradient(1200px 700px at 80% -10%, var(--raised) 0%, var(--indigo) 55%, var(--deep) 100%);
  background-attachment: fixed;
}
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.15; }
p { margin: 0 0 1em; }
.ta { font-family: var(--tamil-serif); }
.ta-sans { font-family: var(--tamil-sans); }
.wrap { width: var(--wrap); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- nav ---------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  font-size: 14px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
}
.brand small { font-weight: 400; color: var(--fg-faint); font-size: 12px; }
.nav-links { display: flex; gap: 32px; margin: 0; padding: 0; list-style: none; }
.nav-links a { color: var(--fg-soft); text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--fg); }
.nav-cta { font-weight: 600; color: var(--accent); text-decoration: none; white-space: nowrap; }
:root[data-tone="light"] .nav-cta { color: var(--ink); }
.nav-menu { display: none; color: var(--fg-soft); text-decoration: none; }
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-menu { display: inline; }
}

/* ---------- hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 6vw;
  align-items: center;
  min-height: 78vh;
  padding: 6vh 0 8vh;
}
.eyebrow {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin: 0 0 22px;
}
.h1 {
  font-family: var(--display);
  font-size: clamp(44px, 6.2vw, 104px);
  line-height: 0.98;
  font-weight: 300;
  letter-spacing: -0.015em;
  margin: 0 0 28px;
}
.h1 b, .h2 b { font-weight: 600; }
.h1 .accent { color: var(--accent); }
.lede {
  font-size: clamp(17px, 1.35vw, 22px);
  max-width: 44ch;
  color: var(--fg-soft);
  margin: 0 0 38px;
}
.ctas { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 4vh 0 6vh; gap: 40px; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 15px 26px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  background: var(--accent);
  color: var(--accent-fg);
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  line-height: 1.2;
}
.btn:hover { filter: brightness(1.05); }
.btn.ghost { background: transparent; color: var(--fg); border-color: color-mix(in srgb, var(--fg) 30%, transparent); }
.btn:disabled { opacity: 0.6; cursor: default; }

/* ---------- trust strip ---------- */
.trust {
  display: flex;
  border-top: 1px solid color-mix(in srgb, var(--fg) 14%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--fg) 14%, transparent);
}
.trust > div { flex: 1; padding: 26px 0; border-right: 1px solid color-mix(in srgb, var(--fg) 14%, transparent); }
.trust > div:last-child { border-right: 0; }
.trust > div + div { padding-left: 26px; }
.trust b { display: block; font-size: 26px; font-weight: 600; margin-bottom: 4px; font-family: var(--display); }
.trust span { font-size: 13px; color: var(--fg-soft); }
@media (max-width: 900px) {
  .trust { flex-wrap: wrap; }
  .trust > div { flex: 1 1 50%; border-right: 0; padding-left: 0 !important; }
}

/* ---------- bands ---------- */
.band { padding: 9vh 0; }
.band.light { background: var(--paper); color: var(--ink); --fg: var(--ink); --fg-soft: rgba(20,31,82,.72); --fg-faint: rgba(20,31,82,.5); --bg-card: #fff; --line: #e3ddcc; }
.band.deep { background: var(--deep); }
.h2 {
  font-family: var(--display);
  font-size: clamp(30px, 3.4vw, 54px);
  font-weight: 300;
  letter-spacing: -0.01em;
  max-width: 22ch;
  margin: 0 0 22px;
}
.band-lede { max-width: 60ch; color: var(--fg-soft); font-size: 17px; margin-bottom: 36px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
@media (max-width: 900px) { .grid3 { grid-template-columns: 1fr; } }
.prod {
  padding: 34px;
  border-radius: var(--radius);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}
.prod h3 { font-size: 22px; margin: 6px 0 8px; }
.prod p { font-size: 15px; color: var(--fg-soft); }
.prod .price { font-size: 14px; color: var(--fg-soft); margin-top: 24px; }
.pill { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.band.light .pill { color: var(--madder); }
.points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 12px; }
.points h3 { font-size: 18px; margin-bottom: 8px; }
.points p { color: var(--fg-soft); font-size: 15px; }
@media (max-width: 900px) { .points { grid-template-columns: 1fr; gap: 28px; } }

/* ---------- app window frame ---------- */
.win {
  border-radius: 12px;
  overflow: hidden;
  background: var(--raised);
  border: 1px solid var(--rim);
  box-shadow: 0 0 0 1px #0d153a, 0 50px 100px -30px rgba(0, 0, 0, 0.7), 0 0 120px -30px rgba(245, 166, 35, 0.4);
}
.band.light .win { box-shadow: 0 40px 90px -30px rgba(20, 31, 82, 0.45); border-color: #e3ddcc; }
.win .bar { height: 34px; display: flex; align-items: center; gap: 7px; padding: 0 14px; background: var(--deep); border-bottom: 1px solid var(--rim); }
.band.light .win .bar { background: #eee9dc; border-color: #e3ddcc; }
.win .bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--chalk); opacity: 0.45; }
.band.light .win .bar i { background: var(--ink); opacity: 0.35; }
.win img { width: 100%; height: auto; }

/* ---------- prose (long pages) ---------- */
.prose { max-width: 70ch; font-size: 17px; }
.prose h1 { font-family: var(--display); font-weight: 300; font-size: clamp(36px, 4.5vw, 64px); letter-spacing: -0.01em; line-height: 1.02; margin: 0 0 20px; }
.prose h2 { font-family: var(--display); font-weight: 500; font-size: 28px; margin: 48px 0 12px; }
.prose h3 { font-size: 19px; margin: 32px 0 8px; }
.prose p, .prose li { color: var(--fg-soft); }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--fg); }
.prose code, .key { font-family: var(--mono); font-size: 0.95em; background: color-mix(in srgb, var(--fg) 8%, transparent); padding: 2px 6px; border-radius: 4px; }
.prose .meta { font-size: 14px; color: var(--fg-faint); margin-bottom: 36px; }
.page { padding: 4vh 0 10vh; }
.page-head { padding: 6vh 0 3vh; }

/* ---------- forms ---------- */
.form { max-width: 520px; }
.field { display: block; margin-bottom: 20px; }
.field > span { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.field input[type="text"], .field input[type="email"] {
  width: 100%;
  font: inherit;
  padding: 13px 14px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--fg);
}
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--fg-soft); margin-bottom: 26px; }
.check input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--indigo); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.error-line { min-height: 1.4em; margin: 14px 0 0; color: var(--danger); font-size: 14px; }
.error-line:empty { display: none; }
.success { display: none; padding: 28px 30px; border-radius: var(--radius); background: var(--bg-card); border: 1px solid var(--line); max-width: 520px; }
.success.show { display: block; }
.success h2 { font-family: var(--display); font-weight: 500; font-size: 26px; margin-bottom: 10px; }
.success p { color: var(--fg-soft); margin-bottom: 0; }
form.sent { display: none; }

/* ---------- footer ---------- */
.foot {
  padding: 34px 0 44px;
  font-size: 13px;
  color: var(--fg-faint);
  border-top: 1px solid color-mix(in srgb, var(--fg) 14%, transparent);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.foot nav { display: flex; gap: 18px; flex-wrap: wrap; }
.foot a { color: var(--fg-soft); text-decoration: none; }
.foot a:hover { color: var(--fg); }

/* ---------- misc ---------- */
.status-line { min-height: 1.4em; font-size: 14px; color: var(--fg-soft); }
.status-line.err { color: var(--danger); }
@media print {
  .nav, .foot, .btn { display: none !important; }
  body { background: #fff; color: #000; }
  .prose p, .prose li { color: #000; }
}
