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

:root {
    --primary: #007bff;
    --secondary: #28a745;
    --dark: #333;
    --light: #f4f4f4;
}

html { scroll-behavior: smooth; }

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    z-index: 1000;
}

.logo { font-size: 1.5rem; font-weight: bold; color: var(--primary); }
.logo span { color: var(--dark); }

.nav-links { display: flex; list-style: none; }
.nav-links li { margin-left: 25px; }
.nav-links a { text-decoration: none; color: var(--dark); font-weight: 500; transition: 0.3s; }
.nav-links a:hover { color: var(--primary); }

.hamburger { display: none; cursor: pointer; font-size: 1.5rem; }

/* Hero Section */
.hero {
    height: 80vh;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), 
                url('https://images.unsplash.com/photo-1516549655169-df83a0774514?auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding-top: 80px;
}

.hero h1 { font-size: 3rem; margin-bottom: 10px; }
.hero-buttons { margin-top: 30px; }

.btn-call, .btn-whatsapp {
    padding: 12px 25px;
    margin: 10px;
    border-radius: 30px;
    text-decoration: none;
    color: white;
    font-weight: bold;
    display: inline-block;
    transition: 0.3s;
}

.btn-call { background: var(--primary); }
.btn-whatsapp { background: var(--secondary); }
.btn-call:hover, .btn-whatsapp:hover { opacity: 0.8; transform: translateY(-3px); }

/* Courses Section */
.courses-section { padding: 80px 5%; text-align: center; background: #fff; }
.courses-section h2 { margin-bottom: 40px; font-size: 2.5rem; color: var(--dark); }

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.course-card {
    background: var(--light);
    padding: 30px;
    border-radius: 15px;
    transition: 0.3s;
    border-bottom: 4px solid var(--primary);
}

.course-card:hover { transform: translateY(-10px); background: #eef6ff; }
.course-card h3 { color: var(--primary); margin-bottom: 10px; }

/* Floating Buttons */
.floating-contact {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.float-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.float-btn.call { background: var(--primary); }
.float-btn.whatsapp { background: var(--secondary); }

/* Footer */
footer { background: #222; color: white; padding: 50px 5% 20px; text-align: center; }
.footer-content h3 { margin-bottom: 15px; }
.socials { margin: 20px 0; font-size: 1.5rem; }
.socials i { margin: 0 15px; cursor: pointer; transition: 0.3s; }
.socials i:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid #444; padding-top: 20px; font-size: 0.9rem; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }
    .nav-links.active { display: flex; }
    .nav-links li { margin: 15px 0; }
    .hamburger { display: block; }
    .hero h1 { font-size: 2rem; }
}