/* Shared styles for the TET Test Hub site pages (home, tests, login, dashboard,
   about, contact). Reuses the same palette as the exam engine (assets/tet-engine.css)
   for visual consistency between the marketing site and the test itself. */
:root{
  --blue:#6366f1; --blue-dark:#4338ca; --blue-light:#a5b4fc;
  --green:#3fa142; --red:#d9534f; --grey:#9e9e9e;
  --lightblue:#eef0fe; --border:#dde3ec; --ink:#1c2430; --muted:#5b6472;
  --page:#f4f6fa; --card:#ffffff;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:"Segoe UI",Arial,Helvetica,sans-serif;background:var(--page);color:var(--ink);-webkit-font-smoothing:antialiased;}
a{color:inherit;}
img{max-width:100%;}

.container{max-width:1160px;margin:0 auto;padding:0 20px;}

/* ---------- Header / nav ---------- */
header.site-header{
  position:sticky;top:0;z-index:20;
  background:linear-gradient(135deg,var(--blue-dark),var(--blue));
  color:#fff;padding:12px 20px;display:flex;justify-content:space-between;
  align-items:center;flex-wrap:wrap;gap:10px;
  box-shadow:0 2px 10px rgba(20,40,80,.15);
}
header.site-header .brand{display:flex;align-items:center;gap:9px;font-size:18px;font-weight:800;text-decoration:none;color:#fff;}
header.site-header .brand .logo{
  width:30px;height:30px;border-radius:8px;background:rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
header.site-header nav{display:flex;gap:6px;flex-wrap:wrap;}
header.site-header nav a{color:#fff;text-decoration:none;font-size:13px;font-weight:600;padding:7px 14px;border-radius:20px;background:rgba(255,255,255,.14);transition:background .15s;}
header.site-header nav a.active{background:#fff;color:var(--blue-dark);}
header.site-header nav a:hover:not(.active){background:rgba(255,255,255,.28);}

.lang-toggle{
  color:#fff;background:rgba(255,255,255,.16);border:1.5px solid rgba(255,255,255,.4);
  border-radius:20px;padding:6px 13px;font-size:12px;font-weight:800;letter-spacing:.3px;
  cursor:pointer;flex-shrink:0;transition:background .15s;
}
.lang-toggle:hover{background:rgba(255,255,255,.3);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  font-weight:700;font-size:14px;padding:12px 20px;border-radius:8px;border:none;
  text-decoration:none;cursor:pointer;transition:filter .15s,transform .15s;
  min-height:44px;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;}
.btn-primary:hover{filter:brightness(1.08);}
.btn-secondary{background:#fff;color:var(--blue-dark);border:1.5px solid var(--blue);}
.btn-secondary:hover{background:var(--lightblue);}
.btn-locked{background:#eef0f3;color:var(--muted);border:1.5px solid var(--border);cursor:pointer;}
.btn-locked:hover{background:#e4e8ee;}
.btn-block{display:flex;width:100%;}

/* ---------- Sections / hero ---------- */
.section{padding:44px 0;}
.section h2{font-size:24px;margin:0 0 8px;color:var(--blue-dark);}
.section .lead{color:var(--muted);font-size:15px;margin:0 0 28px;max-width:640px;}

.hero{text-align:center;padding:56px 16px 40px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:340px;
  background:radial-gradient(60% 100% at 50% 0%, rgba(99,102,241,.14), transparent 70%);
  pointer-events:none;
}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;
  color:var(--blue-dark);background:var(--lightblue);border:1px solid #d7d9fb;
  padding:6px 14px;border-radius:20px;margin-bottom:18px;
}
.hero h1{margin:0 0 12px;font-size:clamp(28px,4.5vw,42px);font-weight:800;letter-spacing:-.5px;color:var(--blue-dark);}
.hero p.tagline{margin:0 auto 26px;max-width:520px;font-size:16px;color:var(--muted);line-height:1.5;}
.hero .hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ---------- Cards / grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px;}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:20px;box-shadow:0 1px 3px rgba(20,40,80,.06);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.card:hover{box-shadow:0 12px 28px rgba(20,40,80,.14);transform:translateY(-4px);border-color:#c8ccd2;}

.test-card{display:flex;flex-direction:column;}
.test-card .badge{
  width:42px;height:42px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--blue-light),var(--blue-dark));
  color:#fff;font-weight:800;font-size:16px;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.test-card h3{margin:0 0 4px;font-size:16.5px;font-weight:700;}
.test-card .desc{font-size:13px;color:var(--muted);margin:0 0 12px;}
.test-card .meta-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px;}
.test-card .meta{
  display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:600;
  color:var(--blue-dark);background:var(--lightblue);padding:4px 9px;border-radius:6px;
}
.test-card .status-owned{color:var(--green);font-weight:700;font-size:12.5px;margin-bottom:10px;}
.test-card .status-locked{color:var(--muted);font-weight:700;font-size:12.5px;margin-bottom:10px;}
.test-card .cta{margin-top:auto;}

.pricing-card{text-align:center;}
.pricing-card .price{font-size:32px;font-weight:800;color:var(--blue-dark);margin:10px 0;}
.pricing-card .price small{font-size:14px;font-weight:600;color:var(--muted);}
.pricing-card ul{list-style:none;padding:0;margin:14px 0 20px;text-align:left;font-size:13.5px;color:var(--muted);}
.pricing-card ul li{padding:5px 0;padding-left:22px;position:relative;}
.pricing-card ul li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800;}
.pricing-card.featured{border-color:var(--blue);box-shadow:0 4px 18px rgba(99,102,241,.16);}
.pricing-card .ribbon{display:inline-block;font-size:11px;font-weight:700;color:#fff;background:var(--blue);padding:3px 10px;border-radius:20px;margin-bottom:10px;}

/* ---------- Benefits ---------- */
.benefits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;}
.benefit{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;}
.benefit .icon{font-size:22px;margin-bottom:8px;}
.benefit h4{margin:0 0 6px;font-size:15px;}
.benefit p{margin:0;font-size:13px;color:var(--muted);}

/* ---------- FAQ (native <details>, no JS needed) ---------- */
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:10px;margin-bottom:10px;overflow:hidden;}
.faq-item summary{padding:14px 16px;font-weight:700;font-size:14px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:18px;color:var(--blue);font-weight:800;}
.faq-item[open] summary::after{content:"−";}
.faq-item p{margin:0;padding:0 16px 16px;font-size:13.5px;color:var(--muted);line-height:1.5;}

/* ---------- Forms ---------- */
.form-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:28px 24px;max-width:400px;margin:40px auto;box-shadow:0 1px 3px rgba(20,40,80,.06);}
.form-card h1{font-size:20px;margin:0 0 6px;text-align:center;color:var(--blue-dark);}
.form-card .sub{font-size:13px;color:var(--muted);text-align:center;margin:0 0 22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;}
.field input{width:100%;padding:11px 12px;font-size:15px;border:1.5px solid var(--border);border-radius:8px;}
.field input:focus{outline:none;border-color:var(--blue);}
.form-note{text-align:center;font-size:12.5px;color:var(--muted);margin-top:18px;}

.alert{padding:11px 14px;border-radius:8px;font-size:13px;margin-bottom:16px;}
.alert-error{background:#fdecea;color:#a83228;border:1px solid #f3c6c1;}
.alert-info{background:var(--lightblue);color:var(--blue-dark);border:1px solid #d7d9fb;}
.alert-success{background:#eaf7ea;color:#256b28;border:1px solid #c7e6c8;}

/* ---------- Dashboard ---------- */
.dash-header{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.dash-header .who h1{margin:0 0 4px;font-size:22px;}
.dash-header .who p{margin:2px 0;font-size:13.5px;color:var(--muted);}
.dash-header .who .pkg{display:inline-block;margin-top:6px;font-size:12.5px;font-weight:700;color:var(--blue-dark);background:var(--lightblue);padding:4px 10px;border-radius:6px;}

footer.site-footer{text-align:center;font-size:12.5px;color:var(--muted);padding:26px 16px;border-top:1px solid var(--border);background:var(--card);}
footer.site-footer .links{margin-bottom:8px;}
footer.site-footer .links a{margin:0 8px;text-decoration:none;color:var(--blue-dark);font-weight:600;}

@media(max-width:480px){
  header.site-header .brand{order:1;}
  header.site-header .lang-toggle{order:2;}
  header.site-header nav{order:3;flex-basis:100%;justify-content:center;text-align:center;}
  .hero{padding:40px 12px 28px;}
  .dash-header{flex-direction:column;}
}