/* BATU Landing — batuhub.com */
:root {
  --primary: #1A365D;
  --primary-light: #2C5282;
  --primary-dark: #152951;
  --accent: #4299E1;
  --gray-50: #F7FAFC;
  --gray-100: #EDF2F7;
  --gray-200: #E2E8F0;
  --gray-500: #718096;
  --gray-700: #4A5568;
  --gray-900: #1A202C;
  --white: #FFFFFF;
  --radius: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--gray-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Nav ────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  color: var(--gray-700);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-link:hover { color: var(--primary); }

/* ── Buttons ───────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all 0.15s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-sm { padding: 6px 16px; font-size: 0.85rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--primary-light);
  color: var(--white);
  border-color: var(--primary-light);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 54, 93, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--primary-light);
  border-color: var(--primary-light);
}

.btn-outline:hover {
  background: var(--primary-light);
  color: var(--white);
}

/* ── Hero ──────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  padding: 96px 0 80px;
  text-align: center;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero .btn-outline {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
}

.hero .btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--white);
  color: var(--white);
}

.hero .btn-primary {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}

.hero .btn-primary:hover {
  background: var(--gray-100);
  border-color: var(--gray-100);
}

/* ── Features ─────────────────────────── */
.features {
  padding: 80px 0;
  background: var(--gray-50);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--white);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}

.feature-desc {
  color: var(--gray-700);
  font-size: 0.95rem;
}

/* ── Plans ────────────────────────────── */
.plans {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.section-subtitle {
  text-align: center;
  color: var(--gray-500);
  margin-bottom: 48px;
  font-size: 1.05rem;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  align-items: start;
}

.plan-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
}

.plan-card--featured {
  border: 2px solid var(--primary-light);
  box-shadow: 0 8px 32px rgba(44, 82, 130, 0.12);
  transform: scale(1.03);
}

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-light);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.plan-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
}

.plan-price {
  font-size: 2.5rem;
  font-weight: 800;
  margin: 8px 0;
  color: var(--gray-900);
}

.plan-period {
  font-size: 1rem;
  font-weight: 400;
  color: var(--gray-500);
}

.plan-desc {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.plan-features {
  list-style: none;
  margin-bottom: 24px;
}

.plan-features li {
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.plan-features li::before {
  content: "\2713  ";
  color: var(--accent);
  font-weight: 700;
}

/* ── Footer ───────────────────────────── */
.footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 32px;
}

.footer-inner {
  text-align: center;
}

.footer-brand {
  margin-bottom: 16px;
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--white);
}

.footer-tagline {
  display: block;
  font-size: 0.8rem;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-bottom: 24px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-links a:hover { color: var(--white); }

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ── Responsive ───────────────────────── */
@media (max-width: 768px) {
  .hero { padding: 64px 0 56px; }
  .hero-title { font-size: 1.75rem; }
  .hero-subtitle { font-size: 1rem; }
  .plans-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
  .plan-card--featured { transform: none; }
  .nav-links { gap: 12px; }
  .nav-link { display: none; }
}