/* ============================================================
   DiagnoCare — Shared Stylesheet
   Design tokens: clinical trust palette, editorial serif display
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@500&display=swap');

:root{
  /* Color tokens */
  --ink:            #0B2B2A;
  --ink-soft:       #375855;
  --primary:        #0F6B5C;
  --primary-dark:   #0A4C42;
  --primary-tint:   #EAF6F3;
  --accent:         #2F6FED;
  --accent-tint:    #EAF0FE;
  --highlight:      #F0A83A;
  --highlight-tint: #FDF1DF;
  --bg:             #FBFBF9;
  --surface:        #FFFFFF;
  --border:         #E1E7E4;
  --border-soft:    #EDF1EE;
  --danger:         #D14343;

  /* Type */
  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(11,43,42,0.06), 0 1px 1px rgba(11,43,42,0.04);
  --shadow-md: 0 12px 32px -12px rgba(11,43,42,0.18);
  --shadow-lg: 0 24px 60px -20px rgba(11,43,42,0.28);

  --container: 1180px;
}

*, *::before, *::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  line-height:1.55;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--ink);
  margin:0 0 0.5em;
  line-height:1.12;
  font-weight:600;
  letter-spacing:-0.01em;
}
p{ margin:0 0 1em; color:var(--ink-soft); }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }
:focus-visible{ outline:2.5px solid var(--accent); outline-offset:3px; border-radius:4px; }

.wrap{ max-width:var(--container); margin:0 auto; padding:0 28px; }
.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--primary);
  display:inline-flex; align-items:center; gap:8px;
  font-weight:500;
}
.eyebrow::before{
  content:"";
  width:6px; height:6px; border-radius:50%;
  background:var(--highlight);
  box-shadow:0 0 0 3px var(--highlight-tint);
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 24px;
  border-radius:100px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
  white-space:nowrap;
}
.btn-primary{ background:var(--ink); color:#fff; }
.btn-primary:hover{ background:var(--primary-dark); box-shadow:var(--shadow-md); transform:translateY(-1px); }
.btn-accent{ background:var(--accent); color:#fff; }
.btn-accent:hover{ background:#2258c9; box-shadow:var(--shadow-md); transform:translateY(-1px); }
.btn-outline{ background:transparent; border-color:var(--border); color:var(--ink); }
.btn-outline:hover{ border-color:var(--ink); }
.btn-ghost{ background:transparent; color:var(--ink); padding:13px 16px; }
.btn-sm{ padding:9px 16px; font-size:13.5px; }
.btn-block{ width:100%; }
.btn[disabled]{ opacity:.5; cursor:not-allowed; }

/* ---------- Navbar ---------- */
.nav{
  position:sticky; top:0; z-index:100;
  background:rgba(251,251,249,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border-soft);
}
.nav-inner{
  max-width:var(--container); margin:0 auto; padding:0 28px;
  height:74px; display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-size:21px; font-weight:700; color:var(--ink); }
.brand-mark{
  width:34px; height:34px; border-radius:9px;
  background:linear-gradient(155deg, var(--primary), var(--primary-dark));
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-family:var(--font-mono); font-size:13px; font-weight:600;
  box-shadow:0 4px 10px -4px rgba(15,107,92,0.55);
}
.nav-links{ display:flex; align-items:center; gap:34px; }
.nav-links a{
  font-size:14.5px; font-weight:500; color:var(--ink-soft);
  position:relative; padding:6px 0;
  transition:color .15s ease;
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a.active{ color:var(--ink); }
.nav-links a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:-4px; height:2px;
  background:var(--highlight); border-radius:2px;
}
.nav-cta{ display:flex; align-items:center; gap:12px; }
.nav-toggle{
  display:none; width:40px; height:40px; border-radius:10px; border:1px solid var(--border);
  background:#fff; align-items:center; justify-content:center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:18px; height:2px; background:var(--ink); position:relative;
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

.mobile-menu{
  display:none; flex-direction:column; gap:2px; background:var(--surface);
  border-bottom:1px solid var(--border-soft); padding:8px 28px 20px;
}
.mobile-menu a{ padding:13px 4px; font-size:15.5px; font-weight:500; color:var(--ink); border-bottom:1px solid var(--border-soft); }
.mobile-menu .btn{ margin-top:14px; }

@media (max-width:900px){
  .nav-links{ display:none; }
  .nav-cta .btn-outline{ display:none; }
  .nav-toggle{ display:flex; }
  body.menu-open .mobile-menu{ display:flex; }
}

/* ---------- Footer ---------- */
.footer{ background:var(--ink); color:#DCEAE7; padding:64px 0 28px; margin-top:120px; }
.footer .wrap{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; }
.footer h4{ color:#fff; font-family:var(--font-body); font-size:13px; text-transform:uppercase; letter-spacing:.08em; font-weight:600; margin-bottom:18px; }
.footer-brand{ font-family:var(--font-display); font-size:22px; color:#fff; font-weight:700; margin-bottom:12px; }
.footer p, .footer a{ color:#A9C2BE; font-size:14px; }
.footer ul li{ margin-bottom:11px; }
.footer a:hover{ color:#fff; }
.footer-bottom{
  max-width:var(--container); margin:48px auto 0; padding:24px 28px 0;
  border-top:1px solid rgba(255,255,255,0.12);
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
  font-size:13px; color:#8CA9A5;
}
.footer-badges{ display:flex; gap:10px; flex-wrap:wrap; }
.footer-badge{
  border:1px solid rgba(255,255,255,0.18); border-radius:100px; padding:6px 13px;
  font-size:12px; color:#CFE3E0; display:flex; align-items:center; gap:6px;
}
@media (max-width:820px){
  .footer .wrap{ grid-template-columns:1fr 1fr; }
}
@media (max-width:520px){
  .footer .wrap{ grid-template-columns:1fr; }
}

/* ---------- Generic section helpers ---------- */
.section{ padding:96px 0; }
.section-tight{ padding:56px 0; }
.section-head{ max-width:640px; margin-bottom:52px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-alt{ background:var(--primary-tint); }
.grid{ display:grid; gap:24px; }
.g3{ grid-template-columns:repeat(3,1fr); }
.g4{ grid-template-columns:repeat(4,1fr); }
.g2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:900px){ .g3,.g4{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .g3,.g4,.g2{ grid-template-columns:1fr; } }

.card{ background:var(--surface); border:1px solid var(--border-soft); border-radius:var(--radius-md); }

/* ---------- Badge / chip ---------- */
.chip{
  display:inline-flex; align-items:center; gap:6px;
  background:var(--surface); border:1px solid var(--border);
  padding:6px 12px; border-radius:100px; font-size:12.5px; font-weight:600; color:var(--ink-soft);
}
.chip.on{ background:var(--primary); border-color:var(--primary); color:#fff; }

/* ---------- Product / Test Card ---------- */
.test-card{
  background:var(--surface); border:1px solid var(--border-soft); border-radius:var(--radius-md);
  padding:26px; display:flex; flex-direction:column; gap:14px;
  transition:box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
.test-card:hover{ box-shadow:var(--shadow-md); transform:translateY(-3px); border-color:var(--border); }
.test-card-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:10px; }
.test-icon{
  width:44px; height:44px; border-radius:11px; background:var(--primary-tint);
  display:flex; align-items:center; justify-content:center; color:var(--primary); flex-shrink:0;
}
.test-card h3{ font-size:19px; margin-bottom:4px; }
.test-meta{ display:flex; gap:14px; font-size:12.5px; color:var(--ink-soft); font-family:var(--font-mono); }
.test-parameters{ font-size:13.5px; color:var(--ink-soft); }
.test-card .price-row{
  margin-top:auto; padding-top:14px; border-top:1px dashed var(--border);
  display:flex; align-items:center; justify-content:space-between;
}
.price{ font-family:var(--font-display); font-size:23px; font-weight:600; color:var(--ink); }
.price-old{ font-size:13px; color:#9AA9A6; text-decoration:line-through; margin-right:6px; font-family:var(--font-body); }
.discount-tag{ font-size:11px; color:var(--primary); font-weight:700; }

/* ---------- Hero vitals strip (signature element) ---------- */
.vitals-strip{
  display:flex; border:1px solid var(--border); border-radius:var(--radius-md);
  background:var(--surface); overflow:hidden; box-shadow:var(--shadow-sm);
}
.vital{ flex:1; padding:18px 20px; border-right:1px solid var(--border-soft); }
.vital:last-child{ border-right:none; }
.vital-label{ font-family:var(--font-mono); font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; color:#8CA09C; margin-bottom:6px; }
.vital-value{ font-family:var(--font-display); font-size:22px; font-weight:600; }
.vital-value.ok{ color:var(--primary); }
.vital-range{ font-size:11px; color:#9AA9A6; font-family:var(--font-mono); margin-top:2px; }
@media (max-width:700px){ .vitals-strip{ flex-wrap:wrap; } .vital{ flex:1 1 50%; border-bottom:1px solid var(--border-soft); } }

/* ---------- Utility ---------- */
.mt-0{ margin-top:0 !important; }
.text-soft{ color:var(--ink-soft); }
.center{ text-align:center; }
.flex{ display:flex; }
.between{ justify-content:space-between; }
.items-center{ align-items:center; }
.gap-8{ gap:8px; }
.gap-12{ gap:12px; }
.gap-16{ gap:16px; }

/* ---------- Reveal on scroll ---------- */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }