/* SIMAS UNIKU — landing page (mandiri, tanpa framework/CDN) */
:root {
    --primary: #b45309;
    --primary-dark: #92400e;
    --primary-light: #fef3c7;
    --ink: #1e293b;
    --muted: #64748b;
    --border: #e2e8f0;
    --bg: #f8fafc;
    --card: #ffffff;
    --radius: 12px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    font-size: 16px;
    line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- tombol ---------- */
.btn {
    display: inline-block;
    padding: 10px 22px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    border: 1px solid transparent;
    cursor: pointer;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-ghost { border-color: var(--border); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 13px 30px; font-size: 16px; }

/* ---------- navigasi ---------- */
.nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 28px; padding-top: 12px; padding-bottom: 12px; }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand:hover { text-decoration: none; }
.brand-logo {
    width: 42px; height: 42px; border-radius: 10px;
    background: var(--primary); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 17px;
}
.brand-text strong { display: block; color: var(--ink); font-size: 16px; line-height: 1.2; }
.brand-text small { color: var(--muted); font-size: 12px; }
.nav-links { display: flex; gap: 22px; }
.nav-links a { color: var(--ink); font-weight: 500; font-size: 15px; }
.nav-links a:hover { color: var(--primary); }

/* ---------- hero ---------- */
.hero {
    background: linear-gradient(135deg, #451a03 0%, #92400e 60%, #b45309 100%);
    color: #fff;
    padding: 84px 0 72px;
}
.hero-inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
.badge {
    display: inline-block;
    background: rgba(255,255,255,.14);
    border: 1px solid rgba(255,255,255,.25);
    padding: 6px 14px; border-radius: 999px;
    font-size: 13px; font-weight: 600; letter-spacing: .4px;
    margin-bottom: 18px;
}
.hero h1 { font-size: 42px; line-height: 1.2; margin: 0 0 18px; letter-spacing: -.5px; }
.hero h1 .accent { color: #fde68a; }
.hero .lead { color: #fef3c7; font-size: 17.5px; max-width: 560px; margin: 0 0 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-cta .btn-ghost { background: transparent; border-color: rgba(255,255,255,.4); color: #fff; }
.hero-cta .btn-ghost:hover { border-color: #fff; color: #fff; }
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.stat-card {
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.18);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}
.stat-card:last-child { grid-column: 1 / -1; }
.stat-num { font-size: 32px; font-weight: 800; color: #fff; }
.stat-label { font-size: 13.5px; color: #fde68a; margin-top: 4px; }

/* ---------- section ---------- */
.section { padding: 76px 0; }
.section-alt { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { font-size: 30px; margin: 0 0 8px; text-align: center; letter-spacing: -.3px; }
.section-sub { text-align: center; color: var(--muted); margin: 0 0 44px; font-size: 17px; }

/* ---------- kartu fitur ---------- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 22px;
}
.card:hover { border-color: #fde68a; box-shadow: 0 8px 24px rgba(180,83,9,.10); }
.card-ico {
    width: 46px; height: 46px; border-radius: 12px;
    background: var(--primary-light); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 700; margin-bottom: 14px;
}
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ---------- langkah ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 22px;
    position: relative;
}
.step-num {
    width: 38px; height: 38px; border-radius: 50%;
    background: var(--primary); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 17px; margin-bottom: 14px;
}
.step h3 { margin: 0 0 8px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ---------- tentang ---------- */
.about { max-width: 760px; text-align: center; }
.about p { color: var(--muted); font-size: 16.5px; }
.about .btn { margin-top: 18px; }

/* ---------- footer ---------- */
.footer { background: #451a03; color: #fde68a; padding: 36px 0 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-bottom: 24px; }
.footer strong { color: #fff; font-size: 16px; }
.footer-links a { color: #fde68a; font-weight: 500; }
.footer-links a:hover { color: #fff; }
.footer-copy { border-top: 1px solid rgba(255,255,255,.12); padding: 16px 24px; text-align: center; }
.footer-copy small { color: #fcd34d; }

/* ---------- responsif ---------- */
@media (max-width: 900px) {
    .hero-inner { grid-template-columns: 1fr; }
    .hero h1 { font-size: 32px; }
    .grid-4, .steps { grid-template-columns: repeat(2, 1fr); }
    .nav-links { display: none; }
}
@media (max-width: 560px) {
    .grid-4, .steps { grid-template-columns: 1fr; }
    .hero { padding: 56px 0 48px; }
    .section { padding: 52px 0; }
    .footer-inner { flex-direction: column; text-align: center; }
}