:root {
    /* Tema Biru Elegan & Profesional */
    --primary-color: #2563eb; /* Royal Blue */
    --primary-hover: #1d4ed8; /* Darker Blue */
    --bg-color: #f8fafc; /* Slate 50 - Soft grayish blue */
    --card-bg: #ffffff;
    --text-dark: #0f172a; /* Slate 900 */
    --text-muted: #64748b; /* Slate 500 */
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-dark);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--card-bg);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-radius: 0 0 20px 20px;
}
.navbar-brand { font-weight: bold; font-size: 1.2rem; color: var(--primary-color); text-decoration: none; }
.navbar-menu { display: none; } 
.navbar-toggle { font-size: 1.5rem; cursor: pointer; border: none; background: none; color: var(--text-dark); }

/* Hero Section */
.hero { text-align: center; padding: 40px 20px; }
.hero-content h1 { font-size: 1.8rem; margin-bottom: 15px; color: var(--text-dark); line-height: 1.3; }
.hero-content h1 span { color: var(--primary-color); }
.hero-content p { color: var(--text-muted); margin-bottom: 25px; font-size: 0.95rem; }
.hero-image-container { margin-top: 30px; }
.hero-image-container img { max-width: 100%; border-radius: 16px; box-shadow: 0 10px 30px rgba(37, 99, 235, 0.15); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}
.btn-primary { background-color: var(--primary-color); color: white; box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3); }
.btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-2px); }
.btn-outline { background-color: transparent; border-color: var(--text-muted); color: var(--text-dark); }
.btn-outline:hover { background-color: var(--text-dark); color: white; border-color: var(--text-dark); }

/* Cards Grid */
.container { padding: 20px; }
.card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 10px 25px rgba(0,0,0,0.06); }
.card h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--text-dark); }
.card p { font-size: 0.9rem; color: var(--text-muted); }

/* FAQ Section */
.faq-section { max-width: 800px; margin: 40px auto; padding: 20px; }
.faq-section h2 { text-align: center; margin-bottom: 10px; font-size: 1.5rem; color: var(--text-dark); }
.faq-section > p { text-align: center; color: var(--text-muted); margin-bottom: 30px; }
.faq-item { background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; margin-bottom: 12px; padding: 15px 20px; cursor: pointer; transition: all 0.3s ease; }
.faq-item:hover { border-color: var(--primary-color); }
.faq-title { display: flex; justify-content: space-between; font-weight: bold; align-items: center;}
.faq-content { display: none; margin-top: 15px; color: var(--text-muted); font-size: 0.9rem; border-top: 1px solid #f1f5f9; padding-top: 10px; }

/* CTA Section */
.cta-section {
    background: linear-gradient(to bottom, #f8fafc 0%, #dbeafe 100%);
    text-align: center;
    padding: 60px 20px 50px;
}
.cta-section h2 { font-size: 1.8rem; margin-bottom: 10px; color: var(--text-dark); }
.cta-section p { margin-bottom: 25px; color: var(--text-muted); }
.btn-dark { background-color: #0f172a; color: #fff; border-radius: 25px; padding: 12px 30px; display: inline-block; text-decoration: none; font-weight: bold; }
.btn-dark:hover { background-color: #1e293b; }

/* Footer */
.footer { background: linear-gradient(to bottom, #1e3a8a 0%, #020617 100%); color: #fff; padding: 50px 20px 20px; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 30px; max-width: 1000px; margin: 0 auto; }
.footer-logo { font-size: 1.5rem; font-weight: bold; margin-bottom: 15px; color: #fff; }
.footer p { font-size: 0.9rem; color: #94a3b8; }
.footer-links h4 { margin-bottom: 15px; font-size: 1.1rem; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 10px; font-size: 0.9rem; }
.footer-links a { color: #94a3b8; text-decoration: none; transition: color 0.3s; }
.footer-links a:hover { color: #fff; }
.footer-bottom { text-align: center; padding-top: 20px; margin-top: 40px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.8rem; color: #64748b; }

/* Floating Elements */
.floating-notif { position: fixed; bottom: 20px; left: 20px; max-width: 300px; background: white; padding: 12px 15px; border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.1); display: flex; align-items: center; gap: 10px; font-size: 0.85rem; z-index: 999; border-left: 4px solid var(--primary-color);}
.floating-notif .icon { width: 30px; height: 30px; background: #eff6ff; color: var(--primary-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0;}
.fab { position: fixed; bottom: 20px; right: 20px; width: 55px; height: 55px; background-color: var(--primary-color); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4); z-index: 1000; font-size: 1.8rem; text-decoration: none; transition: background 0.3s;}
.fab:hover { background-color: var(--primary-hover); }

/* --- MEDIA QUERIES (DESKTOP MODE) --- */
@media (min-width: 768px) {
    .navbar { padding: 15px 50px; }
    .navbar-menu { display: flex; gap: 20px; align-items: center; }
    .navbar-menu a { text-decoration: none; color: var(--text-dark); font-weight: 500; }
    .navbar-menu a:hover { color: var(--primary-color); }
    .navbar-toggle { display: none; }
    
    .hero { display: flex; align-items: center; justify-content: space-between; max-width: 1100px; margin: 0 auto; text-align: left; padding: 60px 20px; gap: 40px;}
    .hero-content { flex: 1; }
    .hero-content h1 { font-size: 2.5rem; }
    .hero-image-container { flex: 1; margin-top: 0; }
    
    .container { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 1000px; margin: 0 auto; }
    .btn { width: auto; margin-right: 10px; }
    
    .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
    
    /* Tambahan untuk membuat gambar dan teks CTA sejajar di Desktop */
    .cta-section {
        flex-direction: row !important;
    }
}