:root {
  --bg: #0b0f1a;
  --bg-alt: #0f1424;
  --card: #151b2e;
  --border: #25304d;
  --text: #e8ecf8;
  --muted: #9aa6c4;
  --accent: #22d3a6;
  --accent-2: #6366f1;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.container.narrow {
  width: min(720px, 92%);
}

/* ---------- Navbar ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 26, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  font-size: 1.25rem;
  font-weight: 800;
}

.brand span {
  color: var(--accent);
}

.nav nav {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
  color: var(--muted);
}

.nav nav a:hover {
  color: var(--text);
}

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 80px 0 70px;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.25), transparent 60%);
}

.hero h1 {
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero p {
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 28px;
}

.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, opacity 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
  opacity: 0.92;
}

.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #04110d;
}

.btn-block {
  display: block;
  text-align: center;
  width: 100%;
}

/* ---------- Sections ---------- */
.section {
  padding: 70px 0;
}

.section.alt {
  background: var(--bg-alt);
}

.section h2 {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 28px;
}

/* ---------- Filter chips ---------- */
.filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.chip {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 0.9rem;
  cursor: pointer;
}

.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #04110d;
  font-weight: 700;
}

/* ---------- Cards ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}

.card h3 {
  margin-bottom: 6px;
}

.card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.paket.populer {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 10px 30px rgba(34, 211, 166, 0.12);
}

.badge {
  position: absolute;
  top: -12px;
  right: 18px;
  background: var(--accent);
  color: #04110d;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 999px;
}

.tipe {
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.harga {
  font-size: 1.9rem;
  font-weight: 800;
  margin: 10px 0 14px;
}

.harga small {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--muted);
}

.spek {
  list-style: none;
  margin-bottom: 22px;
}

.spek li {
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.92rem;
}

.spek li::before {
  content: "✓ ";
  color: var(--accent);
  font-weight: 800;
}

/* ---------- FAQ ---------- */
details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 12px;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

details p {
  margin-top: 10px;
  color: var(--muted);
}

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  padding: 28px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 520px) {
  .nav nav {
    gap: 12px;
    font-size: 0.85rem;
  }
  .hero {
    padding: 56px 0 48px;
  }
}