:root {
    --primary: #0056b3;
    --secondary: #00a8ff;
    --light: #f8f9fa;
    --dark: #333;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 10%;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
}

.logo span { color: var(--secondary); }

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li a {
    text-decoration: none;
    color: var(--dark);
    margin: 0 15px;
    font-weight: 400;
    transition: 0.3s;
}

.nav-links li a:hover { color: var(--primary); }

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

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), 
                url('https://images.unsplash.com/photo-1579684385127-1ef15d508118?auto=format&fit=crop&w=1350&q=80'); /* Imagen de doctora */
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero h1 { font-size: 3.5rem; margin-bottom: 1rem; }

.btn-main {
    display: inline-block;
    padding: 15px 35px;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
    transition: 0.3s;
    border: none;
    cursor: pointer;
}

.btn-main:hover { background: var(--secondary); transform: translateY(-3px); }

/* Cubes Section */
.features { padding: 80px 10%; background: var(--light); }
.container { max-width: 1200px; margin: auto; }

.features .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.cube {
    background: white;
    padding: 40px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: 0.4s;
}

.cube:hover { transform: translateY(-10px); border-bottom: 4px solid var(--primary); }

.cube i { font-size: 3rem; color: var(--primary); margin-bottom: 20px; }

/* About Section */
.about { padding: 100px 10%; text-align: center; }
.btn-secondary {
    display: inline-block;
    margin-top: 20px;
    color: var(--primary);
    text-decoration: none;
    border: 2px solid var(--primary);
    padding: 10px 25px;
    border-radius: 5px;
}

/* Contact & Map */
.contact-section { padding: 80px 10%; background: var(--light); }
.grid-contact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

/* Footer */
footer {
    background: var(--primary);
    color: white;
    padding: 50px 10% 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer-col h4 { margin-bottom: 20px; }
.footer-col ul { list-style: none; }
.footer-col a { color: #ccc; text-decoration: none; }

.social-icons a {
    color: white;
    font-size: 1.5rem;
    margin-right: 15px;
}

.copy { text-align: center; margin-top: 40px; font-size: 0.8rem; opacity: 0.7; }

/* Responsive */
.burger { display: none; cursor: pointer; font-size: 1.5rem; }

@media (max-width: 768px) {
    .nav-links { display: none; }
    .burger { display: block; }
    .grid-contact { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.2rem; }
}