:root {
    --primary-color: #003366; /* Navy Blue - Warna Institusi */
    --accent-color: #D4AF37;  /* Gold - Warna Prestasi */
    --text-dark: #333;
    --text-light: #f4f4f4;
    --bg-light: #f9f9f9;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
html { scroll-behavior: smooth; }

/* Navbar */
.navbar { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.1); position: fixed; width: 100%; top: 0; z-index: 1000; }
.navbar .container { display: flex; justify-content: space-between; align-items: center; padding: 1rem 5%; }
.logo { font-size: 1.5rem; font-weight: bold; color: var(--primary-color); text-decoration: none; }
.logo span { color: var(--accent-color); }
.nav-links { list-style: none; display: flex; }
.nav-links li { margin-left: 20px; }
.nav-links a { text-decoration: none; color: var(--text-dark); font-weight: 500; transition: 0.3s; }
.nav-links .btn-nav { background: var(--primary-color); color: #fff; padding: 8px 20px; border-radius: 5px; }
.nav-links .btn-nav:hover { background: var(--accent-color); color: var(--primary-color); }

/* Hero Section */
.hero { 
    background: url('https://ackermanms.org/img/background.jpg') no-repeat center center/cover;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    position: relative;
}
.overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 51, 102, 0.7); }
.hero-content { position: relative; z-index: 1; max-width: 800px; padding: 20px; }
.hero h1 { font-size: 3rem; margin-bottom: 20px; }
.btn-primary { background: var(--accent-color); color: var(--primary-color); padding: 12px 30px; text-decoration: none; font-weight: bold; border-radius: 5px; border: none; cursor: pointer; transition: 0.3s; }
.btn-primary:hover { background: #fff; }

/* Sections General */
.section-padding { padding: 80px 5%; }
.container { max-width: 1200px; margin: auto; }
.row { display: flex; flex-wrap: wrap; gap: 40px; align-items: center; }
.col-half { flex: 1; min-width: 300px; }
.text-center { text-align: center; margin-bottom: 40px; color: var(--primary-color); }
.bg-light { background: var(--bg-light); }

/* About */
.list-check { list-style: none; margin-top: 20px; }
.list-check li { margin-bottom: 10px; font-size: 1.1rem; }
.list-check i { color: var(--primary-color); margin-right: 10px; }
.image-box { width: 100%; height: 300px; background: #ddd; border-radius: 10px; overflow: hidden; position: relative; }
.image-box img { width: 100%; height: 100%; object-fit: cover; }
.img-caption { position: absolute; bottom: 0; background: rgba(0,0,0,0.6); color: #fff; width: 100%; padding: 10px; text-align: center; }

/* Cards Grid */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.card { background: #fff; padding: 30px; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); text-align: center; transition: 0.3s; }
.card:hover { transform: translateY(-10px); }
.icon-feature { font-size: 3rem; color: var(--accent-color); margin-bottom: 20px; }

/* Contact Form */
.contact-wrapper { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; }
.contact-info { flex: 1; min-width: 300px; }
.info-item { display: flex; align-items: center; margin-bottom: 20px; font-size: 1.1rem; }
.info-item i { width: 40px; height: 40px; background: var(--primary-color); color: #fff; display: flex; align-items: center; justify-content: center; border-radius: 50%; margin-right: 15px; }
.contact-form { flex: 1; min-width: 300px; display: flex; flex-direction: column; gap: 15px; }
.contact-form input, .contact-form textarea { padding: 15px; border: 1px solid #ddd; border-radius: 5px; font-size: 1rem; }

/* Footer */
footer { background: var(--primary-color); color: #fff; text-align: center; padding: 20px 0; margin-top: 50px; }

/* Mobile */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .nav-links { display: none; } /* Perlu JS untuk toggle menu di mobile sesungguhnya */
    .contact-wrapper { flex-direction: column; }
}