/* ICASSLab — shared stylesheet
   Design: Exaggerated-minimal, teal + action orange, mobile-first.
   Fonts: Plus Jakarta Sans (display) / Inter (body). */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
  --teal-900: #134E4A;
  --teal-700: #0F766E;
  --teal-600: #0D9488;
  --teal-500: #14B8A6;
  --teal-50:  #F0FDFA;
  --teal-100: #CCFBF1;
  --orange:   #F97316;
  --orange-dark: #EA580C;
  --ink:      #0F172A;
  --muted:    #475569;
  --line:     #E2E8F0;
  --white:    #ffffff;
  --bg:       #F8FAFC;
  --green:    #16A34A;
  --red:      #DC2626;
  --amber:    #D97706;
  --radius:   16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.08);
  --shadow-md: 0 4px 6px -1px rgba(15,23,42,.08), 0 10px 20px -5px rgba(15,23,42,.10);
  --shadow-lg: 0 20px 40px -12px rgba(13,148,136,.25);
  --maxw: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4 { font-family: 'Plus Jakarta Sans', system-ui, sans-serif; color: var(--teal-900); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 .5em; }
p { margin: 0 0 1rem; color: var(--muted); }
a { color: var(--teal-700); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.center { text-align: center; }

/* Skip link */
.skip { position: absolute; left: -999px; top: 0; background: var(--teal-700); color:#fff; padding: 10px 16px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 12px; top: 12px; }

/* ---------- Header / nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: 'Plus Jakarta Sans'; font-weight: 800; font-size: 1.2rem; color: var(--teal-900); }
.brand:hover { text-decoration: none; }
.brand .logo { width: 34px; height: 34px; display: grid; place-items: center; background: linear-gradient(135deg,var(--teal-600),var(--teal-500)); border-radius: 10px; color:#fff; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a { color: var(--ink); font-weight: 500; font-size: .94rem; padding: 8px 12px; border-radius: 9px; transition: background .2s, color .2s; }
.nav-links a:hover { background: var(--teal-50); color: var(--teal-700); text-decoration: none; }
.nav-links a.active { color: var(--teal-700); background: var(--teal-50); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 9px; width: 42px; height: 42px; cursor: pointer; color: var(--ink); }
@media (max-width: 860px) {
  .nav-toggle { display: grid; place-items: center; }
  .nav-links { position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 16px 16px; transform: translateY(-150%); transition: transform .28s ease; }
  .nav-links.open { transform: translateY(0); box-shadow: var(--shadow-md); }
  .nav-links a { padding: 13px 12px; }
}

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-family: 'Plus Jakarta Sans'; border-radius: 12px; padding: 13px 22px; cursor: pointer; border: 1px solid transparent; transition: transform .15s, box-shadow .2s, background .2s; font-size: 1rem; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 8px 18px -6px rgba(249,115,22,.55); }
.btn-primary:hover { background: var(--orange-dark); transform: translateY(-2px); }
.btn-secondary { background: var(--teal-600); color:#fff; }
.btn-secondary:hover { background: var(--teal-700); transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--teal-700); border-color: var(--line); }
.btn-ghost:hover { background: var(--teal-50); }
.btn:focus-visible, a:focus-visible, input:focus-visible, button:focus-visible { outline: 3px solid var(--teal-500); outline-offset: 2px; }

/* ---------- Hero ---------- */
.hero { padding: clamp(48px, 9vw, 110px) 0 clamp(40px,6vw,80px); position: relative; overflow: hidden; }
.hero::before { content:""; position: absolute; inset: 0; background:
  radial-gradient(60% 60% at 85% 0%, rgba(20,184,166,.16), transparent 60%),
  radial-gradient(50% 50% at 0% 30%, rgba(249,115,22,.10), transparent 60%); z-index: 0; }
.hero .container { position: relative; z-index: 1; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; background: var(--teal-100); color: var(--teal-700); font-weight: 600; font-size: .82rem; padding: 6px 14px; border-radius: 999px; margin-bottom: 18px; font-family: 'Plus Jakarta Sans'; }
.hero h1 { font-size: clamp(2.3rem, 6vw, 4.2rem); font-weight: 800; max-width: 14ch; }
.hero h1 .hl { color: var(--teal-600); }
.hero p.lead { font-size: clamp(1.05rem,2.2vw,1.3rem); max-width: 58ch; margin-bottom: 28px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 34px; color: var(--muted); font-size: .9rem; }
.trust-row span { display: inline-flex; align-items: center; gap: 8px; }
.trust-row svg { color: var(--teal-600); }

/* ---------- Sections / cards ---------- */
section { padding: clamp(40px,6vw,72px) 0; }
.section-head { max-width: 620px; margin: 0 auto 40px; text-align: center; }
.section-head h2 { font-size: clamp(1.7rem,4vw,2.5rem); font-weight: 800; }
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3,1fr); }
.grid-2 { grid-template-columns: repeat(2,1fr); }
@media (max-width: 860px){ .grid-3{grid-template-columns:1fr;} .grid-2{grid-template-columns:1fr;} }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s, border-color .2s; }
.card.link-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--teal-100); }
.card .ico { width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; background: var(--teal-50); color: var(--teal-700); margin-bottom: 16px; }
.card h3 { font-size: 1.2rem; }
.card .arrow { color: var(--teal-700); font-weight: 600; display: inline-flex; align-items:center; gap:6px; }

/* ---------- Calculator ---------- */
.calc-wrap { background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow-md); overflow: hidden; max-width: 720px; margin: 0 auto; }
.calc-head { background: linear-gradient(135deg, var(--teal-700), var(--teal-600)); color:#fff; padding: 26px 28px; }
.calc-head h2 { color:#fff; margin: 0 0 6px; font-size: 1.5rem; }
.calc-head p { color: rgba(255,255,255,.85); margin: 0; font-size: .92rem; }
.calc-body { padding: 26px 28px; }
.field { margin-bottom: 16px; }
.field label { display: flex; justify-content: space-between; font-weight: 600; font-size: .9rem; color: var(--ink); margin-bottom: 6px; }
.field label .w { color: var(--teal-700); font-weight: 700; }
.field input { width: 100%; padding: 13px 15px; border: 1.5px solid var(--line); border-radius: 11px; font-size: 1rem; font-family: inherit; transition: border-color .2s, box-shadow .2s; }
.field input:focus { border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(20,184,166,.18); outline: none; }
.field input.invalid { border-color: var(--red); }
.calc-result { margin-top: 8px; border-radius: 14px; padding: 22px; text-align: center; display: none; }
.calc-result.show { display: block; animation: pop .3s ease; }
@keyframes pop { from{opacity:0; transform: translateY(8px);} to{opacity:1; transform:none;} }
.calc-result .score { font-family: 'Plus Jakarta Sans'; font-size: 3rem; font-weight: 800; line-height: 1; }
.calc-result .status { font-weight: 700; font-size: 1.1rem; margin-top: 8px; display:inline-flex; align-items:center; gap:8px; }
.calc-result.pass { background: #ECFDF5; color: var(--green); }
.calc-result.fail { background: #FEF2F2; color: var(--red); }
.calc-result .note { color: var(--muted); font-size: .85rem; margin-top: 8px; }
.field-error { color: var(--red); font-size: .82rem; margin-top: 10px; display:none; }

/* ---------- Ad slot ---------- */
.ad-slot { max-width: var(--maxw); margin: 28px auto; padding: 0 20px; }
.ad-inner { border: 1px dashed var(--line); border-radius: 12px; background: #fff; min-height: 90px; display: grid; place-items: center; color: #94A3B8; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }

/* ---------- Tables / prose ---------- */
.prose { max-width: 760px; margin: 0 auto; }
.prose h2 { font-size: 1.6rem; margin-top: 2em; }
.prose h3 { font-size: 1.2rem; margin-top: 1.6em; color: var(--teal-700); }
.prose ul { color: var(--muted); padding-left: 1.2em; }
.prose li { margin-bottom: .4em; }
table.tbl { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: .95rem; }
table.tbl th, table.tbl td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); }
table.tbl th { background: var(--teal-50); color: var(--teal-900); font-family: 'Plus Jakarta Sans'; }
.callout { background: var(--teal-50); border: 1px solid var(--teal-100); border-left: 4px solid var(--teal-600); border-radius: 10px; padding: 16px 18px; margin: 1.2em 0; }
.callout.warn { background: #FFFBEB; border-color: #FDE68A; border-left-color: var(--amber); }

/* ---------- Form ---------- */
.form-card { max-width: 560px; margin: 0 auto; background:#fff; border:1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); }
.form-card textarea { width:100%; padding: 13px 15px; border:1.5px solid var(--line); border-radius: 11px; font-family: inherit; font-size: 1rem; min-height: 130px; resize: vertical; }
.form-card textarea:focus, .form-card input:focus { border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(20,184,166,.18); outline:none; }

/* ---------- Footer ---------- */
.footer { background: var(--teal-900); color: rgba(255,255,255,.78); padding: 52px 0 30px; margin-top: 40px; }
.footer h4 { color:#fff; font-size: 1rem; margin-bottom: 14px; }
.footer a { color: rgba(255,255,255,.78); }
.footer a:hover { color:#fff; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
@media (max-width:860px){ .footer-grid{grid-template-columns:1fr 1fr; gap:24px;} }
@media (max-width:520px){ .footer-grid{grid-template-columns:1fr;} }

/* FAQ */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { background:#fff; border:1px solid var(--line); border-radius: 12px; margin-bottom: 12px; box-shadow: var(--shadow-sm); overflow:hidden; }
.faq summary { cursor:pointer; padding: 18px 20px; font-family:'Plus Jakarta Sans'; font-weight:600; color:var(--teal-900); list-style:none; display:flex; justify-content:space-between; align-items:center; gap:12px; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:"+"; font-size:1.4rem; color:var(--teal-600); font-weight:700; transition:transform .2s; }
.faq details[open] summary::after { content:"\2013"; }
.faq summary:hover { background: var(--teal-50); }
.faq .answer { padding: 0 20px 18px; color: var(--muted); }
.faq .answer p { margin: 0 0 .6rem; }

/* Article / blog cards */
.post-grid { display:grid; grid-template-columns: repeat(3,1fr); gap:22px; }
@media (max-width:860px){ .post-grid{grid-template-columns:1fr;} }
.post-card { display:flex; flex-direction:column; background:#fff; border:1px solid var(--line); border-radius: var(--radius); overflow:hidden; box-shadow:var(--shadow-sm); transition:transform .2s, box-shadow .2s; }
.post-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); text-decoration:none; }
.post-card .pc-top { height:84px; background:linear-gradient(135deg,var(--teal-600),var(--teal-500)); display:grid; place-items:center; color:#fff; }
.post-card .pc-body { padding:20px; }
.post-card .tag { font-size:.74rem; text-transform:uppercase; letter-spacing:.08em; color:var(--teal-700); font-weight:700; }
.post-card h3 { font-size:1.12rem; margin:.4em 0; }
.article { max-width: 760px; margin:0 auto; }
.article .meta { color:var(--muted); font-size:.9rem; margin-bottom: 1.5em; }
.article p, .article li { font-size: 1.02rem; }
.article h2 { font-size:1.5rem; margin-top:1.8em; }
.footer-links { display: flex; flex-direction: column; gap: 8px; font-size: .92rem; }
.footer .bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 34px; padding-top: 20px; font-size: .85rem; display:flex; flex-wrap:wrap; gap:10px; justify-content: space-between; }

@media (prefers-reduced-motion: reduce){ *{animation:none!important; transition:none!important; scroll-behavior:auto;} }