/* ============================================================
   AuraBac — Clinical bacteriostatic water brand
   Shared stylesheet & design tokens
   ============================================================ */

:root {
  /* Brand palette — clinical & clean */
  --navy: #0A2540;
  --navy-700: #103257;
  --blue: #0B63E5;
  --blue-600: #0A57C9;
  --teal: #10B5AE;
  --teal-soft: #D7F4F2;
  --ice: #EFF5FE;
  --ice-2: #F6FAFF;
  --line: #E2E9F3;
  --ink: #16243A;
  --muted: #5A6B82;
  --white: #FFFFFF;
  --success: #15A36A;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 26px;
  --shadow-sm: 0 1px 2px rgba(10,37,64,.06), 0 4px 14px rgba(10,37,64,.05);
  --shadow-md: 0 12px 34px rgba(10,37,64,.10);
  --shadow-lg: 0 30px 60px rgba(10,37,64,.16);
  --maxw: 1160px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { color: var(--navy); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.02em; font-weight: 700; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.5rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1rem; }
a  { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-600); }
img, svg { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--teal); border-radius: 2px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }
.section { padding: 86px 0; }
.section.tight { padding: 60px 0; }
.bg-ice { background: var(--ice-2); }
.bg-navy { background: var(--navy); color: #DCE6F4; }
.bg-navy h2, .bg-navy h3 { color: #fff; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-weight: 600; font-size: .98rem; padding: 13px 26px; border-radius: 999px;
  border: 1.5px solid transparent; cursor: pointer; transition: .2s ease; white-space: nowrap;
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 8px 20px rgba(11,99,229,.28); }
.btn-primary:hover { background: var(--blue-600); color:#fff; transform: translateY(-1px); box-shadow: 0 12px 26px rgba(11,99,229,.34); }
.btn-ghost { background: #fff; color: var(--navy); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-1px); }
.btn-light { background: rgba(255,255,255,.12); color:#fff; border-color: rgba(255,255,255,.25); }
.btn-light:hover { background: rgba(255,255,255,.2); color:#fff; }
.btn-lg { padding: 16px 32px; font-size: 1.02rem; }

/* Header */
.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(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; color: var(--navy); font-size: 1.22rem; letter-spacing: -.02em; }
.brand .logo { width: 34px; height: 34px; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { color: var(--navy); font-weight: 500; font-size: .96rem; }
.nav-links a:hover { color: var(--blue); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; }

/* Hero */
.hero { position: relative; overflow: hidden; background:
  radial-gradient(1100px 520px at 78% -8%, #E6F1FF 0%, rgba(230,241,255,0) 60%),
  linear-gradient(180deg, #FBFDFF 0%, #F3F8FF 100%); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; padding: 84px 0 90px; }
.hero h1 span { color: var(--blue); }
.hero .lead { font-size: 1.22rem; margin-bottom: 28px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-badges { display: flex; gap: 22px; flex-wrap: wrap; }
.hero-badge { display: flex; align-items: center; gap: 9px; font-size: .9rem; font-weight: 500; color: var(--navy); }
.hero-badge svg { color: var(--teal); flex: none; }

/* Product visual */
.product-stage {
  position: relative; border-radius: var(--radius-lg); padding: 36px;
  background: linear-gradient(160deg, #103257 0%, #0A2540 100%);
  box-shadow: var(--shadow-lg); overflow: hidden;
}
.product-stage::after {
  content:""; position:absolute; inset:0;
  background: radial-gradient(420px 300px at 30% 18%, rgba(16,181,174,.35), transparent 70%);
}
.product-stage .vial-wrap { position: relative; z-index: 2; display: flex; justify-content: center; }
.spec-chip {
  position:absolute; z-index:3; background:#fff; border-radius:12px; padding:10px 14px;
  box-shadow: var(--shadow-md); font-size:.78rem; font-weight:600; color:var(--navy);
  display:flex; align-items:center; gap:8px;
}
.spec-chip small { display:block; color:var(--muted); font-weight:500; font-size:.72rem; }
.spec-chip.a { top: 30px; left: 14px; }
.spec-chip.b { bottom: 40px; right: 12px; }
.dot { width:9px; height:9px; border-radius:50%; background:var(--teal); }

/* Photo media frames */
.media-frame { position:relative; border-radius: var(--radius-lg); overflow:hidden; box-shadow: var(--shadow-lg); background:#EAF3FB; }
.media-frame img { width:100%; height:100%; object-fit:cover; display:block; }
.media-frame.ratio-4x5 { aspect-ratio: 4/5; }
.media-frame.ratio-16x10 { aspect-ratio: 16/10; }
.media-frame.ratio-1x1 { aspect-ratio: 1/1; }
.product-photo { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:0; overflow:hidden; }
.product-photo img { width:100%; display:block; }

/* Trust bar */
.trustbar { border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:#fff; }
.trustbar .row { display:flex; align-items:center; justify-content:space-between; gap:30px; padding:22px 0; flex-wrap:wrap; }
.trustbar .label { font-size:.78rem; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); font-weight:600; }
.trustbar .marks { display:flex; gap:34px; flex-wrap:wrap; align-items:center; }
.trustbar .mark { display:flex; align-items:center; gap:9px; font-weight:600; color:var(--navy); font-size:.92rem; }
.trustbar .mark svg { color:var(--teal); }

/* Cards / grids */
.grid { display:grid; gap:24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background:#fff; border:1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-sm); transition:.2s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color:#cfe0f7; }
.card .ico {
  width:48px; height:48px; border-radius:13px; display:grid; place-items:center;
  background: var(--teal-soft); color:#0A8B85; margin-bottom:16px;
}
.card h3 { margin-bottom:6px; }
.card p { color:var(--muted); margin:0; font-size:.96rem; }

/* Split feature */
.split { display:grid; grid-template-columns: 1fr 1fr; gap:56px; align-items:center; }
.checklist { list-style:none; padding:0; margin:18px 0 0; display:grid; gap:14px; }
.checklist li { display:flex; gap:12px; align-items:flex-start; color:var(--navy); font-weight:500; }
.checklist li svg { color:var(--success); flex:none; margin-top:3px; }
.checklist small { display:block; color:var(--muted); font-weight:400; }

/* Spec panel */
.spec-card {
  background: linear-gradient(160deg,#0F2F54,#0A2540); color:#CFE0F4; border-radius: var(--radius-lg);
  padding: 40px; box-shadow: var(--shadow-lg);
}
.spec-card h3 { color:#fff; }
.spec-table { width:100%; border-collapse: collapse; margin-top:8px; }
.spec-table td { padding:13px 0; border-bottom:1px solid rgba(255,255,255,.12); font-size:.95rem; }
.spec-table td:first-child { color:#9FB6D4; }
.spec-table td:last-child { text-align:right; color:#fff; font-weight:600; }

/* Steps */
.steps { counter-reset: step; display:grid; grid-template-columns: repeat(3,1fr); gap:26px; }
.step { position:relative; padding-top:8px; }
.step .num {
  width:42px; height:42px; border-radius:50%; background:var(--blue); color:#fff;
  display:grid; place-items:center; font-weight:700; margin-bottom:14px; box-shadow:0 8px 18px rgba(11,99,229,.3);
}
.step h3 { margin-bottom:4px; }
.step p { color:var(--muted); margin:0; font-size:.95rem; }

/* Pricing */
.price-grid { display:grid; grid-template-columns: repeat(3,1fr); gap:24px; }
.price {
  background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:30px; position:relative; transition:.2s;
}
.price:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); }
.price.featured { border-color:var(--blue); box-shadow: var(--shadow-md); }
.price .tag { position:absolute; top:-12px; right:22px; background:var(--blue); color:#fff; font-size:.72rem; font-weight:700; letter-spacing:.06em; padding:5px 12px; border-radius:999px; text-transform:uppercase; }
.price .size { font-size:1.05rem; font-weight:700; color:var(--navy); }
.price .amt { font-size:2.3rem; font-weight:800; color:var(--navy); margin:10px 0 2px; letter-spacing:-.03em; }
.price .amt small { font-size:.9rem; font-weight:500; color:var(--muted); }
.price ul { list-style:none; padding:0; margin:16px 0 22px; display:grid; gap:10px; }
.price li { display:flex; gap:9px; align-items:center; font-size:.93rem; color:var(--muted); }
.price li svg { color:var(--success); flex:none; }

/* FAQ */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border:1px solid var(--line); border-radius:var(--radius-sm); padding:4px 22px; margin-bottom:14px; background:#fff; transition:.2s; }
.faq details[open] { box-shadow: var(--shadow-sm); border-color:#cfe0f7; }
.faq summary { cursor:pointer; font-weight:600; color:var(--navy); padding:16px 0; list-style:none; display:flex; justify-content:space-between; align-items:center; gap:16px; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:"+"; font-size:1.4rem; color:var(--blue); font-weight:400; line-height:1; }
.faq details[open] summary::after { content:"–"; }
.faq p { color:var(--muted); padding-bottom:16px; margin:0; }

/* CTA band */
.cta-band {
  background: linear-gradient(135deg,#0B63E5 0%, #0A2540 100%);
  border-radius: var(--radius-lg); padding: 56px; text-align:center; color:#fff; box-shadow: var(--shadow-lg);
  position:relative; overflow:hidden;
}
.cta-band::after { content:""; position:absolute; inset:0; background: radial-gradient(500px 300px at 80% 120%, rgba(16,181,174,.4), transparent 60%); }
.cta-band > * { position:relative; z-index:2; }
.cta-band h2 { color:#fff; }
.cta-band p { color:#D6E4FB; max-width:54ch; margin:0 auto 26px; }

/* Pills / badges */
.pill-row { display:flex; gap:10px; flex-wrap:wrap; }
.pill { background:var(--ice); color:var(--navy); border:1px solid var(--line); border-radius:999px; padding:7px 15px; font-size:.85rem; font-weight:600; }

/* Page hero (inner) */
.page-hero { background: linear-gradient(180deg,#FBFDFF,#F1F7FF); border-bottom:1px solid var(--line); padding: 64px 0; }
.page-hero .crumb { font-size:.85rem; color:var(--muted); margin-bottom:12px; }
.page-hero .crumb a { color:var(--muted); }

/* Forms */
.form-card { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:34px; box-shadow:var(--shadow-sm); }
.field { margin-bottom:18px; }
.field label { display:block; font-weight:600; color:var(--navy); font-size:.9rem; margin-bottom:7px; }
.field input, .field select, .field textarea {
  width:100%; padding:13px 14px; border:1.5px solid var(--line); border-radius:var(--radius-sm);
  font-family:inherit; font-size:.96rem; color:var(--ink); background:#fff; transition:.15s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline:none; border-color:var(--blue); box-shadow:0 0 0 4px rgba(11,99,229,.12); }
.field textarea { min-height:130px; resize:vertical; }
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:0 18px; }

/* Disclaimer */
.disclaimer {
  background:#FFF7ED; border:1px solid #FCE3BF; border-radius:var(--radius-sm); padding:18px 20px;
  font-size:.86rem; color:#7A5418; display:flex; gap:12px; align-items:flex-start;
}
.disclaimer svg { color:#D98A14; flex:none; margin-top:2px; }

/* Footer */
.site-footer { background:var(--navy); color:#A9BBD6; padding:64px 0 28px; }
.footer-grid { display:grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap:34px; padding-bottom:38px; border-bottom:1px solid rgba(255,255,255,.1); }
.site-footer .brand { color:#fff; margin-bottom:14px; }
.site-footer p { color:#90A4C4; font-size:.92rem; max-width:34ch; }
.footer-col h4 { color:#fff; font-size:.82rem; letter-spacing:.1em; text-transform:uppercase; margin-bottom:16px; }
.footer-col a { display:block; color:#A9BBD6; font-size:.93rem; margin-bottom:10px; }
.footer-col a:hover { color:#fff; }
.footer-bottom { display:flex; justify-content:space-between; align-items:center; gap:16px; padding-top:22px; font-size:.82rem; color:#7E92B4; flex-wrap:wrap; }

/* Reveal animation */
.reveal { opacity:0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity:1; transform:none; }

/* Responsive */
@media (max-width: 940px) {
  .hero-grid, .split { grid-template-columns: 1fr; gap:40px; }
  .grid-3, .grid-4, .steps, .price-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display:none; }
  .nav-toggle { display:block; }
  .nav-links.open { display:flex; position:absolute; top:72px; left:0; right:0; flex-direction:column; background:#fff; padding:18px 24px; border-bottom:1px solid var(--line); gap:16px; box-shadow:var(--shadow-md); }
}
@media (max-width: 620px) {
  .grid-3, .grid-4, .steps, .price-grid, .grid-2, .form-grid { grid-template-columns: 1fr; }
  .section { padding:60px 0; }
  .cta-band { padding:38px 22px; }
  .spec-chip.a, .spec-chip.b { display:none; }
}