/* ScanSathi marketing site - shared styles.
   No external fonts/scripts by design: a privacy-first app ships a
   privacy-first website (no CDN calls, no tracking, no cookies). */

:root {
  --bg: #FFF8F1;
  --bg-alt: #FFFFFF;
  --card: #FFF3E8;
  --text: #2B1608;
  --text-muted: #6B4A32;
  --border: #F0D9C4;
  --brand-start: #F5811F;
  --brand-end: #C25E00;
  --accent: #7A3B0A;
  --accent-hover: #5E2D06;
  --focus: #1A73E8;
  --green: #1B7A3D;
  --shadow: 0 8px 30px rgba(122, 59, 10, 0.12);
  --shadow-sm: 0 2px 10px rgba(122, 59, 10, 0.08);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-w: 1120px;
}

:root[data-theme="dark"] {
  --bg: #180D05;
  --bg-alt: #21130A;
  --card: #2A180C;
  --text: #FBEEE0;
  --text-muted: #D8B79C;
  --border: #3E2712;
  --brand-start: #F5811F;
  --brand-end: #A84C05;
  --accent: #F3A15C;
  --accent-hover: #FFC08A;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #180D05;
    --bg-alt: #21130A;
    --card: #2A180C;
    --text: #FBEEE0;
    --text-muted: #D8B79C;
    --border: #3E2712;
    --brand-start: #F5811F;
    --brand-end: #A84C05;
    --accent: #F3A15C;
    --accent-hover: #FFC08A;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

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

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 12px 20px;
  border-radius: 0 0 8px 0;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-w);
  margin: 0 auto;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--accent); }
.nav-cta {
  display: none;
}
@media (min-width: 760px) {
  .nav-cta { display: inline-flex; }
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--text);
}
@media (max-width: 759px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 20px;
    gap: 16px;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  font-weight: 700;
  font-size: 0.98rem;
  padding: 14px 24px;
  border-radius: 999px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--accent-hover); box-shadow: var(--shadow); }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 16px 30px; font-size: 1.05rem; }
.btn svg { width: 20px; height: 20px; flex: none; }

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--brand-start), var(--brand-end));
  color: #fff;
  overflow: hidden;
  position: relative;
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 64px 24px 0;
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
  align-items: end;
}
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: 1.05fr 0.95fr; padding-top: 88px; }
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  margin: 0 0 20px;
  font-weight: 850;
  letter-spacing: -0.02em;
}
.hero p.lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.92);
  max-width: 46ch;
  margin: 0 0 32px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 28px; }
.hero .btn-ghost { border-color: rgba(255,255,255,0.5); color: #fff; }
.hero .btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.hero .btn-primary { background: #fff; color: var(--accent); }
.hero .btn-primary:hover { background: #FFF3E8; }

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-bottom: 8px;
}
.trust-chip {
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.28);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-shot {
  display: flex;
  justify-content: center;
  align-self: end;
}
.phone-frame {
  width: min(230px, 54vw);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0,0,0,0.32);
  border: 5px solid rgba(255,255,255,0.25);
  line-height: 0;
  transform: translateY(2px);
}
.phone-frame img { width: 100%; height: auto; }
.hero-shot .phone-frame { width: min(250px, 56vw); }

/* Sections */
section { padding: 72px 0; }
.section-head {
  max-width: 640px;
  margin: 0 auto 44px;
  text-align: center;
}
.section-head.left { margin: 0 0 44px; text-align: left; }
.kicker {
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  margin: 0 0 10px;
}
h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}
h2 + p { color: var(--text-muted); font-size: 1.05rem; }
h3 { font-size: 1.2rem; margin: 0 0 8px; }

.alt-bg { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* Feature grid */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
}
.card .icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(160deg, var(--brand-start), var(--brand-end));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  flex: none;
}
.card .icon svg { width: 24px; height: 24px; stroke: #fff; }
.card p { color: var(--text-muted); margin: 0; }

.feature-row {
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
  align-items: center;
  padding: 48px 0;
}
.feature-row:not(:last-child) { border-bottom: 1px solid var(--border); }
@media (min-width: 860px) {
  .feature-row { grid-template-columns: 1fr 1fr; gap: 56px; }
  .feature-row.reverse .feature-copy { order: 2; }
  .feature-row.reverse .feature-shot { order: 1; }
}
.feature-copy .badge {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.feature-copy h3 { font-size: 1.6rem; margin-bottom: 12px; }
.feature-copy p { color: var(--text-muted); font-size: 1.02rem; }
.feature-copy ul { color: var(--text-muted); padding-left: 20px; }
.feature-copy li { margin-bottom: 6px; }
.feature-shot {
  display: flex;
  justify-content: center;
}
.feature-shot .phone-frame {
  width: min(220px, 52vw);
  border-color: var(--border);
  box-shadow: var(--shadow);
  transform: none;
}

/* Steps */
.steps {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  counter-reset: step;
}
.step {
  position: relative;
  padding: 28px 24px 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(160deg, var(--brand-start), var(--brand-end));
  color: #fff;
  font-weight: 800;
  margin-bottom: 14px;
}
.step p { color: var(--text-muted); margin: 0; }

/* Screenshot gallery */
.shot-scroll {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 6px 4px 20px;
  scroll-snap-type: x mandatory;
}
.shot-scroll .phone-frame {
  flex: none;
  scroll-snap-align: start;
  width: 220px;
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

/* Comparison table */
.compare {
  width: 100%;
  min-width: 560px; /* scroll inside .compare-scroll instead of squishing */
  border-collapse: collapse;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.compare th, .compare td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.compare th { background: var(--card); font-weight: 800; }
.compare td:first-child { color: var(--text-muted); }
.compare tr:last-child td { border-bottom: none; }
.yes { color: var(--green); font-weight: 800; }
.no { color: var(--text-muted); }
.compare-scroll { overflow-x: auto; }

/* FAQ */
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 700;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--accent);
  flex: none;
  font-weight: 400;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-item .faq-a { padding: 0 22px 20px; color: var(--text-muted); margin: 0; }

/* CTA band (sits inside .wrap - no extra side margin) */
.cta-band {
  background: linear-gradient(160deg, var(--brand-start), var(--brand-end));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.9); max-width: 50ch; margin: 0 auto 28px; }
.cta-band .hero-ctas { justify-content: center; }
.cta-band .btn-primary { background: #fff; color: var(--accent); }
.cta-band .btn-ghost { border-color: rgba(255,255,255,0.5); color: #fff; }

/* Simple content pages (privacy/support) */
.prose { max-width: 760px; margin: 0 auto; }
.prose h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin-bottom: 6px; }
.prose .updated { color: var(--text-muted); margin-bottom: 40px; font-size: 0.92rem; }
.prose h2 { margin-top: 40px; font-size: 1.35rem; }
.prose p, .prose li { color: var(--text-muted); font-size: 1.02rem; }
.prose ul { padding-left: 22px; }
.prose a { font-weight: 600; }
.page-hero {
  background: linear-gradient(160deg, var(--brand-start), var(--brand-end));
  color: #fff;
  padding: 56px 24px;
  text-align: center;
}
.page-hero h1 { color: #fff; margin: 0 0 10px; }
.page-hero p { color: rgba(255,255,255,0.92); margin: 0; max-width: 60ch; margin-inline: auto; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  background: var(--bg-alt);
}
.footer-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  margin-bottom: 36px;
}
@media (max-width: 700px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-brand p { color: var(--text-muted); max-width: 34ch; }
footer h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin: 0 0 14px;
}
footer ul { list-style: none; margin: 0; padding: 0; }
footer li { margin-bottom: 10px; }
footer a { color: var(--text); text-decoration: none; font-size: 0.95rem; }
footer a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 24px;
  color: var(--text-muted);
  font-size: 0.88rem;
}
.footer-bottom a { color: var(--text-muted); }

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--text);
  cursor: pointer;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; }

/* Utility */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

/* ---- Mobile ---- */
@media (max-width: 640px) {
  .wrap { padding: 0 18px; }
  section { padding: 48px 0; }
  .section-head { margin-bottom: 30px; }

  .hero-inner { padding: 44px 18px 0; gap: 30px; }
  .hero p.lead { margin-bottom: 24px; }
  .eyebrow { margin-bottom: 14px; }
  .trust-chip { font-size: 0.78rem; padding: 6px 12px; }
  .btn-lg { padding: 14px 22px; font-size: 1rem; }

  .card { padding: 20px; }
  .card .icon { width: 42px; height: 42px; margin-bottom: 12px; }

  .feature-row { padding: 36px 0; gap: 26px; }
  .feature-copy h3 { font-size: 1.35rem; }

  .steps { gap: 14px; }
  .step { padding: 22px 18px 18px; }

  .cta-band { padding: 40px 22px; border-radius: 20px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }

  .page-hero { padding: 44px 18px; }
  .faq-item summary { padding: 15px 18px; font-size: 0.95rem; }
  .faq-item .faq-a { padding: 0 18px 16px; }
}

/* Stack CTAs full-width on small phones */
@media (max-width: 480px) {
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { width: 100%; }
  .phone-frame { width: min(210px, 58vw); }
  .hero-shot .phone-frame { width: min(225px, 60vw); }
  .feature-shot .phone-frame { width: min(200px, 56vw); }
}