/* ===== SentinelAuth marketing site ===== */
:root {
  --bg: #0b0f1a;
  --bg-2: #0e1322;
  --panel: #121829;
  --panel-2: #161d31;
  --accent: #4f8cff;
  --accent-2: #36d6a0;
  --text: #e8edf7;
  --muted: #8a96b0;
  --border: #1e2740;
  --border-2: #273350;
  --radius: 16px;
  --maxw: 1080px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(1200px 800px at 70% -10%, #16203a 0%, var(--bg) 55%) no-repeat,
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

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

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; font-weight: 600; cursor: pointer;
  border-radius: 10px; border: 1px solid transparent;
  transition: transform .08s ease, background .15s ease, border-color .15s ease, opacity .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 8px 14px; font-size: 14px; }
.btn-lg { padding: 13px 22px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 24px rgba(79, 140, 255, 0.28); }
.btn-primary:hover { background: #5f98ff; }
.btn-ghost { background: rgba(255, 255, 255, 0.04); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11, 15, 26, 0.6);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.site-header.scrolled { border-bottom-color: var(--border); background: rgba(11, 15, 26, 0.85); }
.nav { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.brand-accent { color: var(--accent); }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 15px; color: var(--muted); }
.nav-links a:hover { color: var(--text); }
#nav-cta { margin-left: 0; }

/* ---- Hero ---- */
.hero { padding: 86px 0 64px; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13.5px; font-weight: 600; color: var(--accent-2);
  background: rgba(54, 214, 160, 0.08);
  border: 1px solid rgba(54, 214, 160, 0.3);
  padding: 7px 14px; border-radius: 999px; margin-bottom: 26px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-2); animation: pulse 2s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(54, 214, 160, 0.5); }
  70% { box-shadow: 0 0 0 9px rgba(54, 214, 160, 0); }
  100% { box-shadow: 0 0 0 0 rgba(54, 214, 160, 0); }
}
.hero-title { font-size: clamp(34px, 6vw, 56px); line-height: 1.08; font-weight: 800; letter-spacing: -0.03em; margin: 0 0 20px; }
.grad { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { max-width: 60ch; margin: 0 auto 32px; color: var(--muted); font-size: clamp(16px, 2.2vw, 19px); }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.trust { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; list-style: none; padding: 0; margin: 38px 0 0; color: var(--muted); font-size: 14px; font-weight: 600; }

/* ---- Sections ---- */
.section { padding: 72px 0; }
.section-alt { background: linear-gradient(180deg, transparent, var(--bg-2) 12%, var(--bg-2) 88%, transparent); }
.section-title { font-size: clamp(26px, 4vw, 36px); font-weight: 800; letter-spacing: -0.02em; text-align: center; margin: 0 0 12px; }
.section-lead { text-align: center; color: var(--muted); max-width: 64ch; margin: 0 auto 44px; font-size: 17px; }
.eyebrow { color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 12px; }

/* ---- Cards / features grid ---- */
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0)), var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 24px;
}
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.feature { transition: transform .15s ease, border-color .15s ease; }
.feature:hover { transform: translateY(-3px); border-color: #2c3a5e; }
.feature-icon { font-size: 26px; margin-bottom: 12px; }
.feature h3 { margin: 0 0 8px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }

/* ---- Security ---- */
.security-inner { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: center; }
.security-copy p { color: var(--muted); font-size: 17px; }
.check-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 30px; color: var(--text); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--accent-2); font-weight: 800; }
.security-card { display: grid; gap: 2px; padding: 10px 8px; }
.sc-row { display: flex; justify-content: space-between; align-items: center; padding: 16px; border-radius: 12px; }
.sc-row span { color: var(--muted); }
.sc-row strong { font-size: 22px; font-variant-numeric: tabular-nums; }
.sc-highlight { background: rgba(79, 140, 255, 0.08); border: 1px solid rgba(79, 140, 255, 0.25); }
.sc-highlight strong { color: var(--accent); }

/* ---- Compatibility logos ---- */
.logo-row { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 26px; opacity: 0.95; }
.logo-row img { filter: saturate(1.05); transition: transform .15s ease; }
.logo-row img:hover { transform: scale(1.12); }

/* ---- Pricing ---- */
.price-wrap { display: flex; justify-content: center; }
.price-card { max-width: 380px; width: 100%; text-align: center; padding: 32px; }
.price-name { font-weight: 700; font-size: 18px; }
.price-amount { font-size: 52px; font-weight: 800; letter-spacing: -0.03em; margin: 10px 0 4px; }
.price-cur { font-size: 28px; vertical-align: super; color: var(--muted); margin-right: 2px; }
.price-per { display: block; font-size: 14px; font-weight: 600; color: var(--muted); margin-top: 2px; }
.price-list { list-style: none; padding: 0; margin: 22px 0; display: grid; gap: 10px; text-align: left; }
.price-list li { padding-left: 28px; position: relative; color: var(--muted); }
.price-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent-2); font-weight: 800; }

/* ---- Download ---- */
.download-inner { text-align: center; }
.download-note { color: var(--muted); font-size: 14px; margin-top: 14px; }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--border); padding: 36px 0; margin-top: 24px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; }
.footer-brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; }
.footer-links { display: flex; gap: 20px; color: var(--muted); font-size: 14px; }
.footer-links a:hover { color: var(--text); }
.footer-copy { color: var(--muted); font-size: 13px; margin-left: auto; }

/* ---- Legal / prose pages ---- */
.legal { padding: 48px 0 24px; }
.legal-inner { max-width: 760px; }
.legal h1 { font-size: clamp(28px, 5vw, 38px); font-weight: 800; letter-spacing: -0.02em; margin: 0 0 6px; }
.legal-meta { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.legal h2 { font-size: 20px; margin: 34px 0 10px; }
.legal p { color: #c4cde0; font-size: 16px; }
.legal code { background: rgba(255, 255, 255, 0.05); color: var(--text); padding: 2px 7px; border-radius: 6px; font-size: 14px; }
.legal a { color: var(--accent); }
.legal a:hover { text-decoration: underline; }
.legal-list { color: #c4cde0; display: grid; gap: 8px; padding-left: 22px; margin: 0 0 8px; }

/* ---- Responsive ---- */
@media (max-width: 760px) {
  .nav-links { display: none; }
  .security-inner { grid-template-columns: 1fr; }
  .footer-copy { margin-left: 0; width: 100%; }
}