/* ===== Warna & variabel utama (ubah di sini untuk ganti tema) ===== */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --accent: #06b6d4;
  --text: #0f172a;
  --muted: #64748b;
  --bg: #ffffff;
  --bg-soft: #f1f5f9;
  --border: #e2e8f0;
  --radius: 14px;
  --max: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* ===== Header / navigasi ===== */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { font-weight: 800; font-size: 1.4rem; color: var(--text); letter-spacing: -.02em; }
.logo span { color: var(--primary); }
.nav-links { display: flex; gap: 28px; list-style: none; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 500; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; }

/* ===== Tombol ===== */
.btn {
  display: inline-block; padding: 12px 24px; border-radius: 10px;
  font-weight: 600; transition: .2s; border: 2px solid var(--primary);
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-outline { color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; }
.nav-links .btn { color: #fff; padding: 8px 18px; }

/* ===== Hero ===== */
.hero {
  padding: 96px 0 80px;
  background: radial-gradient(1000px 500px at 85% -10%, rgba(6,182,212,.18), transparent),
              radial-gradient(800px 400px at 0% 0%, rgba(37,99,235,.14), transparent);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.badge {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: rgba(37,99,235,.1); color: var(--primary); font-weight: 600; font-size: .85rem;
  margin-bottom: 18px;
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.15; letter-spacing: -.03em; margin-bottom: 18px; }
.hero h1 .grad {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { color: var(--muted); font-size: 1.1rem; margin-bottom: 28px; max-width: 560px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-card {
  background: #0f172a; color: #e2e8f0; border-radius: var(--radius);
  padding: 24px; font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .9rem;
  box-shadow: 0 30px 60px -20px rgba(15,23,42,.45);
}
.hero-card .dots { display: flex; gap: 6px; margin-bottom: 16px; }
.hero-card .dots i { width: 12px; height: 12px; border-radius: 50%; background: #ef4444; }
.hero-card .dots i:nth-child(2) { background: #f59e0b; }
.hero-card .dots i:nth-child(3) { background: #22c55e; }
.hero-card .k { color: #60a5fa; } .hero-card .s { color: #34d399; } .hero-card .c { color: #64748b; }

/* ===== Page header (halaman selain beranda) ===== */
.page-head { padding: 72px 0 48px; background: var(--bg-soft); text-align: center; }
.page-head h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); letter-spacing: -.02em; }
.page-head p { color: var(--muted); max-width: 620px; margin: 10px auto 0; }

/* ===== Section umum ===== */
.section { padding: 80px 0; }
.section.soft { background: var(--bg-soft); }
.section-title { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-title h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); letter-spacing: -.02em; margin-bottom: 10px; }
.section-title p { color: var(--muted); }

/* ===== Kartu ===== */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px -20px rgba(15,23,42,.2); }
.card .icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
  font-size: 1.4rem; margin-bottom: 16px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.card p { color: var(--muted); }
.card ul { color: var(--muted); padding-left: 18px; margin-top: 10px; }

/* ===== Statistik ===== */
.stats { text-align: center; }
.stats strong { display: block; font-size: 2.2rem; color: var(--primary); letter-spacing: -.02em; }
.stats span { color: var(--muted); }

/* ===== Dua kolom ===== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin-bottom: 14px; letter-spacing: -.02em; }
.split p { color: var(--muted); margin-bottom: 14px; }
.visual {
  aspect-ratio: 4/3; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid; place-items: center; color: #fff; font-size: 4rem; font-weight: 800;
}

/* ===== CTA ===== */
.cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; border-radius: 20px; padding: 56px 32px; text-align: center;
}
.cta h2 { font-size: clamp(1.5rem, 3.5vw, 2.1rem); margin-bottom: 10px; }
.cta p { opacity: .9; margin-bottom: 24px; }
.cta .btn { background: #fff; color: var(--primary); border-color: #fff; }

/* ===== Kontak ===== */
.contact-item { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-item .icon { flex: none; width: 44px; height: 44px; margin: 0; font-size: 1.1rem; }
.form label { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }
.form input, .form textarea, .form select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px;
  font: inherit; margin-bottom: 16px; background: #fff;
}
.form input:focus, .form textarea:focus, .form select:focus { outline: 2px solid var(--primary); border-color: transparent; }
.map { border: 0; width: 100%; height: 320px; border-radius: var(--radius); }

/* ===== Footer ===== */
.footer { background: #0f172a; color: #94a3b8; padding: 56px 0 28px; margin-top: 80px; }
.footer .logo { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer h4 { color: #fff; margin-bottom: 12px; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 8px; }
.footer a { color: #94a3b8; }
.footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #1e293b; padding-top: 20px; font-size: .9rem; text-align: center; }

/* ===== Responsif ===== */
@media (max-width: 900px) {
  .hero-grid, .split { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: #fff; border-bottom: 1px solid var(--border);
    padding: 8px 16px 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 12px 0; }
  .nav-links .btn { text-align: center; margin-top: 8px; }
  .grid-3, .grid-4, .grid-2, .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 56px 0; }
}