* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', sans-serif; line-height: 1.6; color: #333; background-color: #f9fafb; scroll-behavior: smooth; }
.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.container-small { max-width: 550px; }
.text-center { text-align: center; }
.section { padding: 80px 0; }
.section-alt { background-color: #eff6ff; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.hidden { display: none !important; }

/* Tombol */
.btn { display: inline-block; font-weight: 700; padding: 12px 30px; border-radius: 8px; transition: 0.3s; cursor: pointer; border: none; }
.btn-primary-nav { background-color: #2563eb; color: #fff; padding: 8px 18px; font-size: 0.9rem; }
.btn-secondary { background-color: #f97316; color: #fff; font-size: 1.1rem; }
.btn-secondary:hover { background-color: #ea580c; transform: translateY(-2px); }
.btn-submit { background-color: #2563eb; color: #fff; width: 100%; padding: 14px; }
.btn-submit:hover { background-color: #1d4ed8; }

/* Navbar & Hero */
.navbar { background-color: #fff; box-shadow: 0 2px 4px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; padding: 15px 0; }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.brand-logo { font-size: 1.4rem; font-weight: 800; color: #2563eb; }
.nav-links { display: flex; align-items: center; gap: 25px; color: #4b5563; font-weight: 500; }
.nav-links a:hover { color: #2563eb; }
.hero { background: linear-gradient(135deg, #1d4ed8 0%, #312e81 100%); color: #fff; padding: 100px 0; }
.hero-title { font-size: 2.8rem; font-weight: 800; margin-bottom: 20px; }
.hero-subtitle { font-size: 1.25rem; color: #dbeafe; margin-bottom: 40px; max-width: 800px; margin: 0 auto 40px; }

/* Cards & Forms */
.section-title { font-size: 2rem; margin-bottom: 50px; text-align: center; }
.card { background-color: #fff; padding: 40px 30px; border-radius: 16px; border: 1px solid #f3f4f6; transition: 0.3s; }
.card:hover { transform: translateY(-5px); box-shadow: 0 10px 15px rgba(0,0,0,0.05); }
.card-icon { font-size: 2.5rem; margin-bottom: 20px; }
.card-title { font-size: 1.25rem; margin-bottom: 12px; }
.card-text { color: #6b7280; font-size: 0.95rem; }
.benefit-box { background-color: #fff; padding: 25px; border-radius: 12px; text-align: left; }
.benefit-heading { color: #2563eb; font-weight: 700; margin-bottom: 8px; }
.form-wrapper { background-color: #fff; padding: 40px; border-radius: 20px; box-shadow: 0 10px 25px rgba(0,0,0,0.05); }
.form-title { font-size: 1.6rem; margin-bottom: 8px; text-align: center; }
.form-subtitle { color: #9ca3af; font-size: 0.9rem; text-align: center; margin-bottom: 30px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select { width: 100%; padding: 10px 14px; border: 1px solid #d1d5db; border-radius: 8px; font-size: 1rem; }
.form-group input:focus, .form-group select:focus { border-color: #2563eb; }

/* Alerts & Admin Table */
.alert { margin-top: 20px; padding: 12px; border-radius: 8px; font-size: 0.9rem; text-align: center; font-weight: 500; }
.alert-loading { color: #2563eb; background-color: #eff6ff; }
.alert-success { color: #16a34a; background-color: #f0fdf4; }
.alert-error { color: #dc2626; background-color: #fef2f2; }
.footer { background-color: #111827; color: #9ca3af; padding: 30px 0; text-align: center; font-size: 0.85rem; }
.admin-table { width: 100%; border-collapse: collapse; margin-top: 20px; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
.admin-table th, .admin-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #e5e7eb; }
.admin-table th { background-color: #2563eb; color: white; }
.admin-table tr:hover { background-color: #f3f4f6; }

@media (max-width: 768px) { .nav-links { display: none; } .hero-title { font-size: 2rem; } }