/* SristySpace — shared styles
   Palette extends the GoSatt app itself: deep-space navy + cyan glow.
   Amber is the secondary accent (the QFH small-loop colour). */

:root {
  --bg: #050A1A;
  --panel: #0B1330;
  --panel-2: #101A3E;
  --border: #1B2547;
  --ink: #E8EDF8;
  --dim: #8B96B8;
  --cyan: #4FD8EA;
  --cyan-soft: rgba(79, 216, 234, 0.14);
  --amber: #FFB65C;
  --radius: 12px;
  --maxw: 880px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Noto Sans Tamil", "Noto Sans", Helvetica, Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Nav ---------- */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.wordmark {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark .dot { color: var(--cyan); }

.nav-links { display: flex; gap: 22px; }
.nav-links a {
  color: var(--dim);
  text-decoration: none;
  font-size: 14.5px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--cyan); }

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 40px 0 8px;
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 14px;
}

h1 {
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 14px;
  color: #F4F7FE;
}

.lede {
  color: var(--dim);
  font-size: clamp(15.5px, 2.5vw, 17.5px);
  max-width: 560px;
  margin: 0 auto 26px;
}

/* Pass-arc: the sky-view motif from the GoSatt tracker.
   Dashed full arc = the below-horizon tails; solid clipped arc = the visible pass. */
.arc {
  display: block;
  width: min(560px, 92%);
  margin: 4px auto 0;
}

@keyframes satPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}
.sat-dot { animation: satPulse 2.6s ease-in-out infinite; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sat-dot { animation: none; }
}

/* ---------- Buttons ---------- */
.btn-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 26px 0 10px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  min-height: 48px;
  line-height: 1.3;
}

.btn-primary {
  background: var(--cyan);
  color: #04121C;
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: #6BE2F1;
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--ink);
  background: var(--panel);
}
.btn-secondary:hover, .btn-secondary:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-note {
  color: var(--dim);
  font-size: 13px;
  margin-top: 6px;
}

/* ---------- Sections ---------- */
section { padding: 44px 0 8px; }

h2 {
  font-size: clamp(21px, 3.6vw, 26px);
  margin: 0 0 18px;
  color: #F4F7FE;
  letter-spacing: -0.01em;
}

.section-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 11px;
  font-weight: 600;
  color: var(--amber);
  margin-bottom: 8px;
}

/* ---------- Cards / feature grid ---------- */
.grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
@media (min-width: 620px) {
  .grid { grid-template-columns: 1fr 1fr; }
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.card h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  color: var(--cyan);
}
.card p {
  margin: 0;
  color: var(--dim);
  font-size: 14.5px;
}

/* ---------- Product spotlight (landing) ---------- */
.spotlight {
  background: linear-gradient(160deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 30px 26px;
  text-align: center;
}
.spotlight .app-name {
  font-size: 26px;
  font-weight: 700;
  color: #F4F7FE;
  margin: 0 0 6px;
}
.spotlight .app-name .tt { color: var(--cyan); }
.spotlight p { color: var(--dim); max-width: 520px; margin: 0 auto 20px; }

/* ---------- Install steps ---------- */
.steps { counter-reset: step; padding: 0; margin: 0; list-style: none; }
.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 22px 52px;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0; top: 0;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--cyan-soft);
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 16.5px; top: 38px; bottom: 4px;
  width: 1px;
  background: var(--border);
}
.steps .ta {
  display: block;
  color: var(--ink);
  font-size: 15.5px;
  margin-bottom: 2px;
}
.steps .en {
  display: block;
  color: var(--dim);
  font-size: 13.5px;
}

/* ---------- Callout ---------- */
.callout {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--amber);
  border-radius: 8px;
  padding: 16px 20px;
  color: var(--dim);
  font-size: 14.5px;
}
.callout strong { color: var(--ink); }
.callout a { color: var(--cyan); }

/* ---------- Prose (privacy page) ---------- */
.prose h2 {
  font-size: 19px;
  margin: 34px 0 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.prose section:first-of-type h2 { border-top: none; padding-top: 0; }
.prose p, .prose li { font-size: 15.5px; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--cyan); text-decoration: none; border-bottom: 1px solid rgba(79,216,234,0.35); }
.prose a:hover { border-bottom-color: var(--cyan); }

/* ---------- Footer ---------- */
footer {
  margin-top: 56px;
  border-top: 1px solid var(--border);
  padding: 26px 0 40px;
  color: var(--dim);
  font-size: 14px;
}
footer .foot-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
footer a { color: var(--dim); text-decoration: none; }
footer a:hover, footer a:focus-visible { color: var(--cyan); }

a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}