/* ISOXPERT — shared styles for per-standard certification landing pages.
   Reuses the design tokens/components from index.html so pages match the brand. */

:root {
  --navy: #0B1E47;
  --navy-2: #102a63;
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --green: #16A34A;
  --orange: #F97316;
  --purple: #7C3AED;
  --ink: #0f172a;
  --slate: #475569;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --radius: 18px;
  --shadow: 0 20px 50px -25px rgba(11, 30, 71, 0.35);
  --maxw: 1120px;
  --font-head: "Montserrat", "Segoe UI", system-ui, Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --accent: var(--blue);
  --accent-soft: rgba(37, 99, 235, .10);
  font-synthesis: none;
}

/* Per-page accent themes (set class on <body>) */
.t-blue   { --accent: var(--blue);   --accent-soft: rgba(37,99,235,.10); }
.t-green  { --accent: var(--green);  --accent-soft: rgba(22,163,74,.10); }
.t-orange { --accent: var(--orange); --accent-soft: rgba(249,115,22,.12); }
.t-purple { --accent: var(--purple); --accent-soft: rgba(124,58,237,.10); }
.t-teal   { --accent: #0d9488;       --accent-soft: rgba(13,148,136,.10); }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-body); color: var(--ink); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
section { position: relative; }
h1, h2, h3, h4, h5 { font-family: var(--font-head); }

/* ---------- Header ---------- */
header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.9); backdrop-filter: saturate(180%) blur(12px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 11px; }
.logo img { height: 40px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 14px; font-weight: 600; color: var(--slate); transition: color .2s; }
.nav-links a:hover { color: var(--blue); }
.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 14px; padding: 11px 22px; border-radius: 999px; transition: transform .2s, box-shadow .2s, background .2s; cursor: pointer; border: none; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 10px 25px -12px rgba(37,99,235,.7); }
.btn-primary:hover { filter: brightness(.95); transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--navy); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-white { background: #fff; color: var(--navy); }
.btn-white:hover { transform: translateY(-2px); }
.btn-outline-light { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); }
.btn-outline-light:hover { background: rgba(255,255,255,.1); }
@media (max-width: 720px) { .nav-links { display: none; } }

/* ---------- Breadcrumb ---------- */
.crumb { font-size: 13px; color: var(--muted); padding: 18px 0 0; }
.crumb a:hover { color: var(--accent); }
.crumb span { color: var(--slate); font-weight: 600; }

/* ---------- Hero ---------- */
.lp-hero { background: radial-gradient(900px 500px at 85% -10%, var(--accent-soft), transparent 60%), var(--bg-soft); border-bottom: 1px solid var(--line); overflow: hidden; }
.lp-hero-inner { padding: 56px 0 64px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); background: var(--accent-soft); border: 1px solid var(--accent-soft); padding: 7px 14px; border-radius: 999px; margin-bottom: 20px; }
.lp-hero h1 { font-size: clamp(32px, 4.4vw, 50px); line-height: 1.06; letter-spacing: -1.2px; color: var(--navy); font-weight: 800; }
.lp-hero p.lead { margin-top: 20px; font-size: 18px; color: var(--slate); max-width: 560px; }
.lp-cta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; }
.lp-hero-card { background: linear-gradient(160deg, var(--navy), var(--navy-2)); border-radius: 24px; padding: 30px; color: #fff; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.lp-hero-card::before { content: ""; position: absolute; width: 260px; height: 260px; right: -80px; top: -90px; background: radial-gradient(circle, var(--accent-soft), transparent 70%); opacity: .8; }
.lp-hero-card h2 { font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: #7eb0ff; position: relative; margin-bottom: 16px; }
.lp-hero-card ul { list-style: none; display: flex; flex-direction: column; gap: 12px; position: relative; }
.lp-hero-card li { display: flex; gap: 11px; align-items: flex-start; font-size: 14.5px; color: #dfe7f6; }
.lp-hero-card li svg { flex: none; margin-top: 3px; color: #7eb0ff; }
@media (max-width: 940px) { .lp-hero-inner { grid-template-columns: 1fr; gap: 34px; } }

/* ---------- Sections ---------- */
.sec { padding: 68px 0; }
.sec.soft { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 720px; margin: 0 auto 40px; text-align: center; }
.sec-head .kicker { font-size: 12px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 36px); color: var(--navy); letter-spacing: -1px; margin: 12px 0; line-height: 1.12; }
.sec-head p { color: var(--slate); font-size: 17px; }
.prose { max-width: 760px; margin: 0 auto; }
.prose p { color: var(--slate); font-size: 16.5px; margin-bottom: 16px; }
.prose h3 { color: var(--navy); font-size: 20px; margin: 26px 0 10px; }
.prose b { color: var(--navy); }

/* ---------- Cards grid ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; transition: transform .2s, box-shadow .2s, border-color .2s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.card .ci { width: 46px; height: 46px; border-radius: 12px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 14px; }
.card h4 { color: var(--navy); font-size: 17px; margin-bottom: 6px; }
.card p { color: var(--slate); font-size: 14.5px; }
.card ul { margin: 0; padding-left: 0; list-style: none; }
.card li { position: relative; padding-left: 26px; color: var(--slate); font-size: 14.5px; margin-bottom: 9px; }
.card li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--accent); font-weight: 800; }
@media (max-width: 860px) { .grid-3 { grid-template-columns: 1fr; } .grid-2 { grid-template-columns: 1fr; } }

/* ---------- App highlight ---------- */
.app-band { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 24px; padding: 40px; }
.app-band .role { font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 1.5px; color: var(--accent); }
.app-band h3 { font-size: clamp(22px, 2.8vw, 30px); color: var(--navy); letter-spacing: -.5px; margin: 8px 0 14px; }
.app-band p { color: var(--slate); font-size: 16px; margin-bottom: 18px; }
@media (max-width: 860px) { .app-band { grid-template-columns: 1fr; padding: 28px 22px; } }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border: 1px solid var(--line); border-radius: 14px; padding: 4px 20px; margin-bottom: 12px; background: #fff; transition: border-color .2s; }
.faq details[open] { border-color: var(--accent); }
.faq summary { cursor: pointer; list-style: none; font-family: var(--font-head); font-weight: 700; color: var(--navy); font-size: 16px; padding: 16px 0; 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: 22px; font-weight: 700; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--slate); font-size: 15px; padding: 0 0 16px; }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(135deg, var(--navy), var(--navy-2)); color: #fff; border-radius: 26px; padding: 52px; text-align: center; position: relative; overflow: hidden; box-shadow: var(--shadow); }
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(600px 300px at 50% -20%, var(--accent-soft), transparent 60%); }
.cta-band h2 { position: relative; font-size: clamp(24px, 3.2vw, 34px); letter-spacing: -1px; }
.cta-band p { position: relative; color: #c3d1ec; margin: 14px auto 26px; max-width: 560px; font-size: 17px; }
.cta-actions { position: relative; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 560px) { .cta-band { padding: 38px 22px; } .sec { padding: 52px 0; } }

/* ---------- Newsletter ---------- */
.news { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; border: 1px solid var(--line); border-radius: 22px; padding: 34px; background: #fff; }
.news h3 { font-size: 22px; color: var(--navy); letter-spacing: -.4px; margin-bottom: 8px; }
.news p { color: var(--slate); font-size: 15px; }
.news form { display: flex; flex-direction: column; gap: 10px; }
.news .frow { display: flex; gap: 10px; }
.news input { flex: 1; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font: inherit; font-size: 14px; outline: none; transition: border-color .2s; }
.news input:focus { border-color: var(--accent); }
.news .hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.news .note { font-size: 12px; color: var(--muted); }
.news .status { font-size: 13.5px; font-weight: 600; min-height: 1px; }
.news .status.ok { color: var(--green); }
.news .status.err { color: #dc2626; }
@media (max-width: 700px) { .news { grid-template-columns: 1fr; padding: 26px 20px; } .news .frow { flex-direction: column; } }

/* ---------- Footer ---------- */
footer { background: var(--navy); color: #cdd9f0; padding: 52px 0 26px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; }
footer p.about { color: #9fb0d4; font-size: 14px; margin-top: 14px; max-width: 340px; }
footer h5 { color: #fff; font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 14px; }
footer ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
footer ul a { font-size: 14px; color: #9fb0d4; transition: color .2s; }
footer ul a:hover { color: #fff; }
footer .logo img { height: 38px; filter: brightness(0) invert(1); }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 20px; font-size: 12px; color: #7e90b8; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
@media (max-width: 780px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .foot-grid { grid-template-columns: 1fr; } }
