/* ============================================================
   OCULSEN — shared design system
   Theme: amber accent (#B45309 / #F59E0B) on slate neutrals
   ============================================================ */

:root {
  /* Brand */
  --amber-50:  #fffbeb;
  --amber-100: #fef3c7;
  --amber-300: #fcd34d;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --amber-700: #b45309;  /* logo accent */
  --amber-800: #92400e;

  /* Slate neutrals */
  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;

  /* Semantic */
  --bg:          #ffffff;
  --bg-soft:     var(--slate-50);
  --bg-muted:    var(--slate-100);
  --text:        var(--slate-900);
  --text-soft:   var(--slate-600);
  --text-faint:  var(--slate-400);
  --border:      var(--slate-200);
  --accent:      var(--amber-700);
  --accent-hover:var(--amber-800);
  --ring:        rgba(180, 83, 9, .25);

  --ok:   #15803d;
  --warn: #b45309;
  --bad:  #b91c1c;
  --info: #0369a1;

  --radius:    14px;
  --radius-sm: 9px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.08);
  --shadow:    0 4px 6px -1px rgba(15,23,42,.07), 0 10px 24px -8px rgba(15,23,42,.18);
  --shadow-lg: 0 24px 60px -18px rgba(15,23,42,.30);

  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;

  --maxw: 1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .4em; font-weight: 800; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.25rem; }
p  { margin: 0 0 1rem; }
a  { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img, svg { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section   { padding: 88px 0; }
.section--tight { padding: 56px 0; }
.center { text-align: center; }
.muted  { color: var(--text-soft); }
.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.lead { font-size: 1.15rem; color: var(--text-soft); max-width: 60ch; }
.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 650; font-size: .98rem; line-height: 1;
  padding: 13px 22px; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer; transition: .18s ease;
  white-space: nowrap; font-family: inherit;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-muted); color: var(--text); border-color: var(--slate-300); }
.btn-light { background: #fff; color: var(--slate-900); }
.btn-light:hover { background: var(--slate-100); color: var(--slate-900); transform: translateY(-1px); }
.btn-block { width: 100%; justify-content: center; }
.btn-lg { padding: 16px 28px; font-size: 1.05rem; }
.btn-sm { padding: 9px 14px; font-size: .85rem; }

/* ---------- Badge / pill ---------- */
.pill {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: .78rem; font-weight: 600; padding: 5px 12px; border-radius: 999px;
  background: var(--amber-50); color: var(--amber-800); border: 1px solid var(--amber-100);
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.82); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 28px; height: 70px; }
.nav .logo img { height: 68px; width: auto; }
.nav-links { display: flex; gap: 26px; margin-left: 10px; }
.nav-links a { color: var(--text-soft); font-weight: 550; font-size: .95rem; }
.nav-links a:hover { color: var(--text); }
.nav-spacer { margin-left: auto; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 460px at 78% -8%, rgba(245,158,11,.13), transparent 60%),
    radial-gradient(700px 420px at 8% 18%, rgba(180,83,9,.07), transparent 55%),
    var(--bg);
}
.hero-grid {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center;
  padding: 80px 0 90px;
}
.hero h1 span.hl { color: var(--accent); }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin: 28px 0 22px; }
.hero-trust { display: flex; gap: 22px; flex-wrap: wrap; color: var(--text-faint); font-size: .85rem; }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust svg { width: 16px; height: 16px; color: var(--ok); }

/* device mock in hero */
.mock {
  background: var(--slate-900); border-radius: var(--radius-lg); padding: 14px;
  box-shadow: var(--shadow-lg); border: 1px solid var(--slate-800);
}
.mock-bar { display: flex; gap: 7px; padding: 4px 6px 12px; }
.mock-bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--slate-700); }
.mock-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.cam-tile {
  position: relative; aspect-ratio: 16/10; border-radius: 10px; overflow: hidden;
  background: linear-gradient(135deg, #1e293b, #0f172a);
}
.cam-tile .scan {
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(0deg, rgba(148,163,184,.05) 0, rgba(148,163,184,.05) 1px, transparent 1px, transparent 4px);
}
.cam-tile .label {
  position: absolute; left: 8px; bottom: 7px; font-size: .68rem; color: #e2e8f0;
  background: rgba(2,6,23,.55); padding: 2px 7px; border-radius: 5px; backdrop-filter: blur(4px);
}
.cam-tile .live {
  position: absolute; right: 8px; top: 7px; font-size: .62rem; font-weight: 700; color: #fff;
  background: #dc2626; padding: 2px 7px; border-radius: 5px; letter-spacing: .05em;
  display: inline-flex; align-items: center; gap: 4px;
}
.cam-tile .live::before { content:""; width:5px; height:5px; border-radius:50%; background:#fff; animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: .25; } }
.cam-tile.amber { background: linear-gradient(135deg, #78350f, #422006); }
.cam-tile.steel { background: linear-gradient(135deg, #334155, #0f172a); }

/* ---------- Logos / social proof ---------- */
.proof { padding: 34px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--bg-soft); }
.proof p { text-align: center; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 16px; }
.proof-row { display: flex; flex-wrap: wrap; gap: 36px; justify-content: center; align-items: center; opacity: .72; }
.proof-row b { font-weight: 800; font-size: 1.1rem; color: var(--slate-500); letter-spacing: -.02em; }

/* ---------- Feature grid ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-sm); transition: .2s ease;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); border-color: var(--slate-300); }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--text-soft); margin: 0; font-size: .96rem; }
.ico {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--amber-50); color: var(--accent); margin-bottom: 18px;
  border: 1px solid var(--amber-100);
}
.ico svg { width: 24px; height: 24px; }

/* alternating feature rows */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature-row + .feature-row { margin-top: 80px; }
.feature-row.rev .media { order: 2; }
.feature-list { list-style: none; padding: 0; margin: 18px 0 0; }
.feature-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; color: var(--text-soft); }
.feature-list svg { width: 20px; height: 20px; color: var(--accent); flex: none; margin-top: 2px; }
.panel {
  border-radius: var(--radius-lg); padding: 22px; background: var(--slate-900);
  box-shadow: var(--shadow-lg); border: 1px solid var(--slate-800);
}

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; text-align: center; }
.stat .n { font-size: 2.6rem; font-weight: 800; color: var(--accent); letter-spacing: -.03em; }
.stat .l { color: var(--text-soft); font-size: .92rem; }

/* ---------- Pricing ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; align-items: stretch; }
.price {
  display: flex; flex-direction: column; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px; position: relative; box-shadow: var(--shadow-sm);
}
.price.popular { border-color: var(--accent); box-shadow: 0 0 0 3px var(--ring), var(--shadow); }
.price .tag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; font-size: .72rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; padding: 5px 14px; border-radius: 999px;
}
.price h3 { font-size: 1.15rem; }
.price .amt { font-size: 2.8rem; font-weight: 800; letter-spacing: -.03em; margin: 6px 0 2px; }
.price .amt small { font-size: .95rem; font-weight: 500; color: var(--text-faint); }
.price ul { list-style: none; padding: 0; margin: 22px 0; flex: 1; }
.price li { display: flex; gap: 10px; align-items: flex-start; padding: 7px 0; color: var(--text-soft); font-size: .95rem; }
.price li svg { width: 18px; height: 18px; color: var(--ok); flex: none; margin-top: 3px; }
.price li.off { color: var(--text-faint); }
.price li.off svg { color: var(--slate-300); }

/* ---------- Steps ---------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.step { position: relative; padding-top: 8px; }
.step .num {
  width: 42px; height: 42px; border-radius: 12px; background: var(--slate-900); color: #fff;
  display: grid; place-items: center; font-weight: 800; margin-bottom: 16px;
}

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--border); padding: 6px 0; }
.faq summary {
  cursor: pointer; padding: 18px 4px; font-weight: 650; list-style: none;
  display: flex; justify-content: space-between; gap: 16px; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 1.4rem; font-weight: 400; transition: .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--text-soft); padding: 0 4px 18px; margin: 0; }

/* ---------- CTA band ---------- */
.cta-band {
  background:
    radial-gradient(700px 320px at 80% 0%, rgba(245,158,11,.22), transparent 60%),
    var(--slate-900);
  color: #fff; border-radius: var(--radius-lg); padding: 60px; text-align: center;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: var(--slate-300); max-width: 52ch; margin: 0 auto 26px; }

/* ---------- Footer ---------- */
.footer { background: var(--slate-900); color: var(--slate-400); padding: 64px 0 32px; }
.footer a { color: var(--slate-300); }
.footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer h4 { color: #fff; font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 16px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 10px; font-size: .92rem; }
.footer-brand img { height: 68px; margin-bottom: 14px; }
.footer-brand p { font-size: .9rem; max-width: 30ch; }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 14px;
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--slate-800);
  font-size: .85rem; color: var(--slate-500);
}
.footer-social { display: flex; gap: 14px; }
.footer-social a svg { width: 20px; height: 20px; }

/* ---------- Page hero (sub-pages) ---------- */
.page-hero { background: var(--bg-soft); border-bottom: 1px solid var(--border); padding: 64px 0; text-align: center; }
.page-hero .lead { margin: 0 auto; }

/* ---------- Misc helpers ---------- */
.flex { display: flex; }
.between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-sm { gap: 10px; }
.gap { gap: 18px; }
.mt-sm { margin-top: 12px; } .mt { margin-top: 24px; } .mt-lg { margin-top: 48px; }
.hide { display: none !important; }

/* ---------- Toast ---------- */
.toast-wrap { position: fixed; bottom: 24px; right: 24px; z-index: 200; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: var(--slate-900); color: #fff; padding: 13px 18px; border-radius: 10px;
  box-shadow: var(--shadow-lg); font-size: .9rem; display: flex; align-items: center; gap: 10px;
  animation: toastIn .25s ease; border-left: 3px solid var(--accent);
}
.toast svg { width: 18px; height: 18px; color: var(--amber-400); }
@keyframes toastIn { from { opacity: 0; transform: translateY(12px); } }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .hero-grid, .feature-row, .feature-row.rev .media { grid-template-columns: 1fr; }
  .feature-row.rev .media { order: 0; }
  .grid-3, .grid-4, .price-grid, .steps, .stats, .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero .media { display: none; }
}
@media (max-width: 760px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: block; }
  .nav.open + .mobile-menu { display: block; }
  .grid-3, .grid-4, .price-grid, .steps, .stats, .footer-grid, .grid-2 { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .cta-band { padding: 40px 22px; }
}

/* mobile menu */
.mobile-menu { display: none; border-bottom: 1px solid var(--border); background: #fff; padding: 14px 0; }
.mobile-menu a { display: block; padding: 12px 24px; color: var(--text); font-weight: 550; }
.mobile-menu a:hover { background: var(--bg-muted); }
.mobile-menu .btn { margin: 12px 24px 4px; }