/* ============================================================
   Landing page UjianOnline — gaya vibecoder.co.id
   Glassmorphism, gradasi indigo→violet, font Inter
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg1: #F5F3FF;
  --bg2: #EEF2FF;
  --bg3: #F0F9FF;
  --ink: #1F1B3A;
  --ink2: #111017;
  --muted: #635F82;
  --accent: #4F46E5;
  --accent2: #8B5CF6;
  --accent-dark: #4338CA;
  --tint-rgb: 255, 255, 255;
  --glass-bg: rgba(var(--tint-rgb), .5);
  --glass-bg-soft: rgba(var(--tint-rgb), .32);
  --glass-border: rgba(255, 255, 255, .65);
  --shadow: 0 8px 32px -8px rgba(124, 111, 240, .35);
  --radius-lg: 18px;
  --radius-md: 12px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, var(--bg1) 0%, var(--bg2) 45%, var(--bg3) 100%);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 22px; }

/* ---------- Navbar (glass, sticky) ---------- */
.navbar {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(22px) saturate(180%);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  background: rgba(var(--tint-rgb), .55);
  border-bottom: 1px solid var(--glass-border);
}
.navbar-inner {
  max-width: 1120px; margin: 0 auto; padding: 13px 22px;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.08rem; color: var(--ink); }
.brand-logo {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; font-weight: 800;
  box-shadow: var(--shadow);
}
.nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a { padding: 8px 14px; border-radius: 10px; font-weight: 600; font-size: .92rem; color: var(--muted); }
.nav-links a:hover { background: rgba(255,255,255,.6); color: var(--ink); }
.nav-cta { margin-left: auto; display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 700; font-size: .95rem; border: none; cursor: pointer;
  padding: 12px 22px; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 6px 20px -6px rgba(79, 70, 229, .55);
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 26px -6px rgba(79, 70, 229, .6); }
.btn.ghost {
  background: rgba(var(--tint-rgb), .7);
  color: var(--ink);
  border: 1px solid rgba(255,255,255,.8);
  box-shadow: 0 2px 10px -4px rgba(31,27,58,.15);
}
.btn.ghost:hover { background: #fff; }
.btn.sm { padding: 9px 16px; font-size: .88rem; border-radius: 10px; }

/* ---------- Hero ---------- */
.hero { text-align: center; padding: 84px 0 40px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(var(--tint-rgb), .65);
  border: 1px solid var(--glass-border);
  padding: 7px 16px; border-radius: 999px;
  font-size: .84rem; font-weight: 700; color: var(--accent);
  box-shadow: var(--shadow);
}
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.3rem);
  letter-spacing: -.03em; line-height: 1.12;
  margin: 22px 0 16px;
}
.hero h1 .grad {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.sub { color: var(--muted); font-size: 1.08rem; max-width: 640px; margin: 0 auto 30px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-note { color: var(--muted); font-size: .84rem; margin-top: 14px; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 48px 0 20px; }
.stat {
  background: var(--glass-bg); backdrop-filter: blur(22px) saturate(180%);
  border: 1px solid var(--glass-border); border-radius: var(--radius-md);
  padding: 20px; text-align: center; box-shadow: var(--shadow);
}
.stat .num { font-size: 1.9rem; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .lbl { color: var(--muted); font-size: .88rem; font-weight: 600; margin-top: 2px; }

/* ---------- Sections ---------- */
.section { padding: 64px 0 20px; }
.section-tag { color: var(--accent); font-weight: 700; font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; }
.section h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); letter-spacing: -.02em; margin: 8px 0 12px; }
.section .lead { color: var(--muted); max-width: 620px; margin-bottom: 34px; }

/* ---------- Glass cards grid ---------- */
.grid { display: grid; gap: 20px; }
.grid.features { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid.jenis { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.glass {
  background: var(--glass-bg); backdrop-filter: blur(22px) saturate(180%);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  border: 1px solid var(--glass-border); border-radius: var(--radius-lg);
  padding: 26px; box-shadow: var(--shadow);
}
.glass h3 { font-size: 1.08rem; margin-bottom: 8px; }
.glass p { color: var(--muted); font-size: .93rem; }
.glass .ic {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(79,70,229,.12); color: var(--accent); font-size: 1.3rem; margin-bottom: 14px;
}
.glass .ic.grad { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; counter-reset: step; }
.step { position: relative; }
.step .n {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff;
  font-weight: 800; margin-bottom: 12px;
}
.step h3 { font-size: 1rem; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: .92rem; }

/* ---------- Security ---------- */
.sec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.sec-item { display: flex; gap: 14px; align-items: flex-start; }
.sec-item .dot {
  width: 26px; height: 26px; border-radius: 8px; flex: none;
  background: rgba(16,185,129,.15); color: #059669;
  display: grid; place-items: center; font-weight: 800; font-size: .9rem;
}
.sec-item h4 { font-size: .98rem; margin-bottom: 4px; }
.sec-item p { color: var(--muted); font-size: .9rem; }

/* ---------- CTA ---------- */
.cta {
  margin: 60px 0 40px; text-align: center;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: var(--radius-lg); color: #fff; padding: 52px 30px;
  box-shadow: 0 20px 48px -16px rgba(76, 29, 149, .45);
}
.cta h2 { font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -.02em; margin-bottom: 10px; }
.cta p { opacity: .92; margin-bottom: 26px; }
.cta .btn { background: #fff; color: var(--accent); box-shadow: 0 8px 24px -8px rgba(0,0,0,.3); }
.cta .btn.ghost { background: rgba(255,255,255,.16); color: #fff; border: 1px solid rgba(255,255,255,.4); }
.cta .btn.ghost:hover { background: rgba(255,255,255,.28); }

/* ---------- Footer ---------- */
.footer { text-align: center; padding: 30px 0 40px; color: var(--muted); font-size: .84rem; }
.footer .brand { justify-content: center; margin-bottom: 10px; }

@media (max-width: 640px) {
  .navbar-inner { gap: 10px; }
  .nav-links { order: 3; width: 100%; justify-content: center; }
}