/* Tema frontend "parallax" — one page landing (lihat FrontendController).
   Sengaja tanpa framework CSS: cukup 1 file ini + main.js. */

:root {
    --primary: #1b84ff;
    --primary-dark: #0f6ae0;
    --ink: #1b1f2a;
    --muted: #5e6675;
    --bg: #ffffff;
    --bg-alt: #f5f7fb;
    --dark: #0e1320;
    --nav-h: 72px;
    --radius: 10px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }

body {
    margin: 0;
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    font-size: 17px;
    line-height: 1.7;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { color: var(--primary); }

.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- Navbar ---------- */
.nav {
    position: fixed; inset: 0 0 auto 0; z-index: 50;
    height: var(--nav-h);
    color: #fff;
    transition: background-color .3s, box-shadow .3s, color .3s;
}
.nav.is-solid {
    background: rgba(255, 255, 255, .96);
    color: var(--ink);
    box-shadow: 0 1px 0 rgba(0, 0, 0, .06), 0 8px 24px rgba(15, 23, 42, .06);
    backdrop-filter: blur(8px);
}
.nav__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav__brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; font-weight: 800; font-size: 20px; }
.nav__brand img { height: 36px; width: auto; }
.nav__menu { display: flex; gap: 4px; }
.nav__menu a {
    color: inherit; text-decoration: none; font-weight: 600; font-size: 15px;
    padding: 8px 14px; border-radius: 999px; opacity: .85;
    transition: opacity .2s, background-color .2s;
}
.nav__menu a:hover, .nav__menu a.is-active { opacity: 1; background: rgba(127, 127, 127, .14); }
.nav__toggle { display: none; }

@media (max-width: 860px) {
    .nav__toggle {
        display: flex; flex-direction: column; justify-content: center; gap: 5px;
        width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; color: inherit; cursor: pointer;
    }
    .nav__toggle span { display: block; height: 2px; background: currentColor; border-radius: 2px; transition: transform .25s, opacity .25s; }
    .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
    .nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .nav__menu {
        position: absolute; top: var(--nav-h); left: 0; right: 0;
        flex-direction: column; gap: 0; padding: 8px 16px 16px;
        background: #fff; color: var(--ink); box-shadow: 0 16px 32px rgba(15, 23, 42, .12);
        display: none;
    }
    .nav.is-open { background: #fff; color: var(--ink); }
    .nav.is-open .nav__menu { display: flex; }
    .nav__menu a { border-radius: 8px; padding: 12px 14px; }
}

/* ---------- Section ---------- */
.sec { position: relative; overflow: hidden; padding: 110px 0; }
.sec__inner { position: relative; z-index: 2; max-width: 820px; text-align: center; }
.sec__title { margin: 0 0 12px; font-size: clamp(30px, 4.2vw, 46px); line-height: 1.2; font-weight: 800; letter-spacing: -.02em; }
.sec__lead { margin: 0 auto 28px; max-width: 640px; font-size: clamp(17px, 2vw, 20px); color: var(--muted); }

.sec--plain:nth-child(odd) { background: var(--bg-alt); }

/* Parallax: .sec__bg lebih tinggi dari section-nya & digeser main.js waktu scroll. */
.sec--parallax { color: #fff; padding: 150px 0; }
.sec__bg {
    position: absolute; left: 0; right: 0; top: 0; bottom: 0; z-index: 0;
    background-size: cover; background-position: center;
    will-change: transform;
}
.sec__overlay {
    position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(180deg, rgba(8, 12, 24, .55), rgba(8, 12, 24, .7));
}
.sec--parallax .sec__lead,
.sec--gradient .sec__lead { color: rgba(255, 255, 255, .85); }

.sec--gradient {
    color: #fff;
    background:
        radial-gradient(1200px 600px at 15% 10%, rgba(27, 132, 255, .45), transparent 60%),
        radial-gradient(900px 500px at 85% 90%, rgba(124, 58, 237, .35), transparent 60%),
        var(--dark);
}

.sec--hero {
    min-height: 100vh; min-height: 100svh;
    display: flex; align-items: center;
    padding: calc(var(--nav-h) + 40px) 0 90px;
}
.sec--hero .sec__title { font-size: clamp(38px, 6.5vw, 72px); }
.sec__scroll {
    position: absolute; left: 50%; bottom: 28px; z-index: 2;
    width: 26px; height: 42px; margin-left: -13px;
    border: 2px solid rgba(255, 255, 255, .7); border-radius: 14px;
}
.sec__scroll::after {
    content: ''; position: absolute; left: 50%; top: 8px;
    width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: #fff;
    animation: scrollDot 1.8s infinite;
}
@keyframes scrollDot { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- Konten dari CKEditor ---------- */
.prose { margin: 0 auto 8px; text-align: left; }
.prose > :first-child { margin-top: 0; }
.prose p, .prose ul, .prose ol, .prose blockquote, .prose figure { margin: 0 0 1.1em; }
.prose h2, .prose h3, .prose h4 { line-height: 1.3; margin: 1.6em 0 .5em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose blockquote { padding: 4px 20px; border-left: 4px solid var(--primary); font-style: italic; color: var(--muted); }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; }
.prose th, .prose td { padding: 10px 12px; border: 1px solid rgba(127, 127, 127, .25); }
.prose figure.table { overflow-x: auto; }
.sec--parallax .prose a, .sec--gradient .prose a { color: #fff; }
.sec--parallax .prose blockquote, .sec--gradient .prose blockquote { color: rgba(255, 255, 255, .85); }

/* Teks pendek (1 paragraf, tanpa list/tabel) lebih enak rata tengah. */
.prose:has(> p:only-child) { text-align: center; }

.btn {
    display: inline-block; margin-top: 16px; padding: 14px 30px;
    background: var(--primary); color: #fff; text-decoration: none;
    font-weight: 700; font-size: 16px; border-radius: 999px;
    box-shadow: 0 10px 24px rgba(27, 132, 255, .3);
    transition: transform .2s, background-color .2s, box-shadow .2s;
}
.btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 14px 28px rgba(27, 132, 255, .38); }

/* ---------- Animasi muncul (cuma kalau JS jalan) ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .js .reveal { opacity: 1; transform: none; transition: none; }
    .sec__scroll::after { animation: none; }
}

/* ---------- Footer ---------- */
.footer { background: var(--dark); color: rgba(255, 255, 255, .7); padding: 56px 0 24px; font-size: 15px; }
.footer a { color: rgba(255, 255, 255, .85); text-decoration: none; }
.footer a:hover { color: #fff; }
.footer p { margin: 0 0 8px; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.footer__brand { color: #fff; font-weight: 800; font-size: 20px; margin-bottom: 8px; }
.footer__social { display: flex; flex-direction: column; gap: 8px; }
.footer__copy { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .1); font-size: 14px; }

@media (max-width: 760px) {
    body { font-size: 16px; }
    .sec { padding: 80px 0; }
    .sec--parallax { padding: 110px 0; }
    .footer__grid { grid-template-columns: 1fr; gap: 20px; }
}