/* BioChex brand styles
 * Palette: navy #0D1B2A, teal #0BA3A3, aqua #66D0D6, light #E6F4F7, pale #C7D1D8, slate #64707B
 * Typography: Montserrat Semibold / Source Sans 3 Regular
 */
:root {
  --navy: #0D1B2A;
  --navy-2: #122a40;
  --teal: #0BA3A3;
  --teal-2: #098f8f;
  --aqua: #66D0D6;
  --aqua-50: rgba(102,208,214,.18);
  --light: #E6F4F7;
  --pale: #C7D1D8;
  --slate: #64707B;
  --ink: #0D1B2A;
  --ink-2: #1f2c3a;
  --bg: #ffffff;
  --bg-alt: #F7FAFC;
  --line: #E5ECF1;
  --shadow: 0 1px 3px rgba(13,27,42,.06), 0 8px 30px rgba(13,27,42,.06);
  --radius: 10px;
  --radius-lg: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4,h5,h6 {
  font-family: "Montserrat", system-ui, sans-serif;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--navy);
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.15; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); line-height: 1.2; }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-2); text-decoration: underline; }
small { color: var(--slate); }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 1.25rem; }
.wrap-narrow { max-width: 820px; margin: 0 auto; padding: 0 1.25rem; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .row { display: flex; align-items: center; justify-content: space-between; padding: .9rem 0; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .65rem; color: var(--navy); }
.brand:hover { text-decoration: none; }
.brand svg { width: 36px; height: 36px; }
.brand .name { font-family: "Montserrat", sans-serif; font-weight: 600; font-size: 1.25rem; color: var(--navy); }
.brand .tag { display: block; font-size: .68rem; letter-spacing: .14em; color: var(--teal); text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav a { color: var(--ink-2); font-weight: 500; font-size: .96rem; }
.nav a.cta { background: var(--teal); color: #fff; padding: .55rem 1rem; border-radius: 8px; font-weight: 600; }
.nav a.cta:hover { background: var(--teal-2); text-decoration: none; }

@media (max-width: 760px) {
  .nav a:not(.cta) { display: none; }
}

/* Hero */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-alt) 100%);
  padding: 4rem 0 5rem;
}
.hero .grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 3rem; align-items: center; }
.hero h1 .accent { color: var(--teal); display: block; }
.hero .lede { font-size: 1.15rem; color: var(--slate); max-width: 38ch; }
.hero .ctas { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.5rem; }
.hero-art { position: relative; min-height: 320px; }
@media (max-width: 880px) { .hero .grid { grid-template-columns: 1fr; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .8rem 1.25rem;
  border-radius: 9px; font-weight: 600; font-family: inherit; font-size: .98rem;
  border: 1px solid transparent; cursor: pointer; transition: transform .05s ease, background .15s ease, color .15s ease, border-color .15s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-2); color: #fff; text-decoration: none; }
.btn-outline { background: transparent; color: var(--navy); border-color: var(--pale); }
.btn-outline:hover { border-color: var(--teal); color: var(--teal); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--teal); }
.btn-block { width: 100%; justify-content: center; }

/* Tag pill */
.eyebrow { display: inline-flex; align-items: center; gap: .5rem; font-size: .78rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--teal); }
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--teal); display: inline-block; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 1.25rem; box-shadow: var(--shadow);
  transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--aqua); }
.card .icon { width: 36px; height: 36px; color: var(--teal); margin-bottom: .65rem; }
.card h3 { font-size: 1.05rem; margin-bottom: .35rem; }
.card p { font-size: .95rem; color: var(--slate); margin: 0; }

/* Section */
.section { padding: 4rem 0; }
.section.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section .head { text-align: center; max-width: 720px; margin: 0 auto 2rem; }
.section .head p { color: var(--slate); }

/* Workflow */
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.flow .step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.25rem; position: relative; }
.flow .step .num { font-family: "Montserrat", sans-serif; font-weight: 700; color: var(--teal); font-size: 1.5rem; }
@media (max-width: 760px) { .flow { grid-template-columns: 1fr; } }

/* Forms */
.form { display: grid; gap: 1rem; }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form .row2 { grid-template-columns: 1fr; } }
.form label { display: block; font-weight: 600; font-size: .92rem; color: var(--ink-2); margin-bottom: .35rem; }
.form input[type=text], .form input[type=email], .form input[type=tel], .form input[type=number],
.form input[type=password], .form select, .form textarea {
  width: 100%; padding: .7rem .9rem; border: 1px solid var(--pale); border-radius: 8px;
  font-family: inherit; font-size: 1rem; background: #fff; color: var(--ink);
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px var(--aqua-50);
}
.form textarea { min-height: 120px; resize: vertical; }
.form .help { color: var(--slate); font-size: .85rem; margin-top: .25rem; }
.form .check { display: flex; align-items: flex-start; gap: .55rem; font-size: .92rem; color: var(--ink-2); }
.form .check input { margin-top: .25rem; }
.field-error { color: #b00020; font-size: .88rem; margin-top: .35rem; }

/* Alerts */
.alert { border-radius: 10px; padding: .9rem 1rem; margin-bottom: 1rem; border: 1px solid; font-size: .96rem; }
.alert-ok { background: #ecf8ee; border-color: #b8e0bf; color: #155724; }
.alert-warn { background: #fff8e6; border-color: #ffd97a; color: #6b4d00; }
.alert-err { background: #fdecea; border-color: #f5b3ad; color: #721c24; }

/* Tables */
.table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.table th, .table td { text-align: left; padding: .65rem .8rem; border-bottom: 1px solid var(--line); }
.table th { background: var(--light); color: var(--navy); font-weight: 600; }
.table tbody tr:hover { background: #fbfdfe; }
.table.compact th, .table.compact td { padding: .5rem .65rem; font-size: .9rem; }
.kv { width: 100%; border-collapse: collapse; }
.kv th { width: 38%; text-align: left; color: var(--slate); font-weight: 500; padding: .35rem 0; font-size: .92rem; }
.kv td { padding: .35rem 0; font-size: .96rem; }

/* Status badges */
.badge { display: inline-block; padding: .25rem .55rem; border-radius: 999px; font-size: .78rem; font-weight: 600; letter-spacing: .04em; }
.badge.b-issued { background: #e1f6ec; color: #0f7a3d; }
.badge.b-revised { background: #fff3d6; color: #885a00; }
.badge.b-superseded { background: #e7e9ec; color: #4d5763; }
.badge.b-voided { background: #fde2e1; color: #91140e; }
.badge.b-pass { background: #e1f6ec; color: #0f7a3d; }
.badge.b-fail { background: #fde2e1; color: #91140e; }
.badge.b-info { background: var(--light); color: var(--navy); }
.badge.b-na { background: #eef2f5; color: #5a6773; }

/* Footer */
.site-footer { background: var(--navy); color: #c7d6e0; padding: 3rem 0 2rem; margin-top: 4rem; }
.site-footer a { color: #e8f3f5; }
.site-footer .grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; }
.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: .8rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .5rem; font-size: .95rem; }
.site-footer .legal { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid #1c3146; font-size: .85rem; color: #8aa3b6; }
@media (max-width: 760px) { .site-footer .grid { grid-template-columns: 1fr 1fr; } }

/* Verify result */
.verify-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 1.5rem; box-shadow: var(--shadow);
}
.verify-status {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .55rem .9rem; border-radius: 999px; font-weight: 700;
}
.verify-status.ok { background: #e1f6ec; color: #0f7a3d; }
.verify-status.warn { background: #fff3d6; color: #885a00; }
.verify-status.err { background: #fde2e1; color: #91140e; }
.verify-status .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }

/* Admin */
.admin-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.admin-side { background: var(--navy); color: #c7d6e0; padding: 1.25rem; }
.admin-side .brand { color: #fff; }
.admin-side .brand .name { color: #fff; }
.admin-side nav { display: flex; flex-direction: column; gap: .25rem; margin-top: 1.5rem; }
.admin-side nav a { color: #c7d6e0; padding: .55rem .75rem; border-radius: 8px; font-weight: 500; }
.admin-side nav a:hover, .admin-side nav a.active { background: #122a40; color: #fff; text-decoration: none; }
.admin-main { padding: 1.5rem 2rem; background: var(--bg-alt); }
.admin-topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; }
.admin-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.25rem; box-shadow: var(--shadow); }
.admin-card + .admin-card { margin-top: 1rem; }
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.kpis .kpi { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1rem 1.25rem; }
.kpis .kpi .num { font-family: "Montserrat", sans-serif; font-weight: 600; font-size: 1.8rem; color: var(--navy); }
.kpis .kpi .label { color: var(--slate); font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; }
@media (max-width: 900px) {
  .admin-shell { grid-template-columns: 1fr; }
  .admin-side { display: none; }
  .kpis { grid-template-columns: repeat(2, 1fr); }
}
.btn-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.toolbar { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; }
.toolbar input, .toolbar select { padding: .5rem .7rem; border-radius: 8px; border: 1px solid var(--pale); font-family: inherit; }

/* Print/PDF */
@media print {
  .no-print { display: none !important; }
}