:root {
    --prodec-blue: #1a365d;
    --prodec-golden: #dca54e;
    --prodec-terra: #a0522d;
    --white: #ffffff;
    --light-gray: #f8fafc;
    --transition: all 0.3s ease;
}

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

body { background: var(--light-gray); color: #333; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Navbar */
.main-header {
    background: var(--white);
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky; top: 0; z-index: 1000;
}

.container-nav { display: flex; justify-content: space-between; align-items: center; }

.logo-area { display: flex; align-items: center; gap: 10px; }
.logo-img { height: 50px; }
.main-title { display: block; font-weight: bold; color: var(--prodec-blue); font-size: 1rem; }
.sub-title { font-size: 0.7rem; color: var(--prodec-blue); opacity: 0.8; }

.nav-links { list-style: none; display: flex; align-items: center; gap: 15px; }
.nav-links a { text-decoration: none; color: var(--prodec-blue); font-weight: 600; padding: 10px; transition: var(--transition); }
.nav-links a:hover { color: var(--prodec-golden); }

.btn-primary-small { background: var(--prodec-blue); color: white !important; border-radius: 5px; padding: 8px 20px !important; }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu { 
    position: absolute; top: 100%; left: 0; background: white; 
    list-style: none; min-width: 180px; box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    opacity: 0; visibility: hidden; transform: translateY(10px); transition: var(--transition);
}
.dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a { display: block; padding: 12px; border-bottom: 1px solid #eee; font-size: 0.9rem; }

/* Hero */
.hero { 
    background: linear-gradient(rgba(26, 54, 93, 0.8), rgba(26, 54, 93, 0.8)), url('https://images.unsplash.com/photo-1521737711867-e3b97375f902?auto=format&fit=crop&w=1600');
    background-size: cover; padding: 120px 0; color: white; text-align: center;
}
.hero h2 { font-size: 2.8rem; color: var(--prodec-golden); margin-bottom: 20px; }
.hero p { max-width: 700px; margin: 0 auto 30px; font-size: 1.1rem; }
.btn-golden { background: var(--prodec-golden); color: var(--prodec-blue); padding: 15px 40px; text-decoration: none; font-weight: bold; border-radius: 50px; display: inline-block; }

/* Features */
.features { margin-top: -50px; padding-bottom: 60px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.feature-card { background: white; padding: 30px; border-radius: 12px; text-align: center; box-shadow: 0 5px 20px rgba(0,0,0,0.05); }
.feature-card i { font-size: 2.5rem; color: var(--prodec-blue); margin-bottom: 15px; }
.feature-card.highlighted { background: var(--prodec-blue); color: white; }
.feature-card.highlighted i { color: var(--prodec-golden); }

/* Courses */
.courses { padding: 80px 0; }
.section-title { color: var(--prodec-blue); margin-bottom: 40px; text-align: center; font-size: 2rem; }
.course-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.course-card { background: white; border-radius: 15px; overflow: hidden; box-shadow: 0 5px 15px rgba(0,0,0,0.1); transition: var(--transition); }
.course-card:hover { transform: translateY(-10px); }
.card-img { height: 200px; background-size: cover; background-position: center; }
.card-body { padding: 25px; }
.card-body h3 { margin-bottom: 10px; color: var(--prodec-blue); }
.badge-golden { background: var(--prodec-golden); color: var(--prodec-blue); padding: 5px 15px; border-radius: 20px; font-size: 0.8rem; font-weight: bold; }
.badge-terra { background: var(--prodec-terra); color: white; padding: 5px 15px; border-radius: 20px; font-size: 0.8rem; font-weight: bold; }

/* Steps */
.steps-section { background: var(--prodec-blue); padding: 80px 0; color: white; }
.text-white { color: white !important; }
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 40px; text-align: center; }
.step-num { width: 50px; height: 50px; background: var(--prodec-golden); color: var(--prodec-blue); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-weight: bold; font-size: 1.5rem; }

/* Footer */
.main-footer { background: #111; color: #777; padding: 40px 0; text-align: center; }

/* Responsive */
.menu-toggle { display: none; font-size: 1.5rem; cursor: pointer; color: var(--prodec-blue); background: none; border: none; }

@media (max-width: 768px) {
    .menu-toggle { display: block; }
    .navbar { 
        position: absolute; top: 100%; left: 0; width: 100%; background: white; 
        height: 0; overflow: hidden; transition: var(--transition); box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }
    .navbar.active { height: auto; padding: 20px 0; }
    .nav-links { flex-direction: column; gap: 0; }
    .nav-links li { width: 100%; }
    .nav-links a { display: block; padding: 15px 25px; border-bottom: 1px solid #f0f0f0; }
    
    .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; display: none; background: #f9f9f9; width: 100%; }
    .dropdown.open .dropdown-menu { display: block; }
}