/* Variables */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --dark-color: #212529;
    --light-color: #f8f9fa;
}

/* Navegación */
#mainNav {
    background-color: rgba(13, 13, 13, 0.95);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

#mainNav.scrolled {
    background-color: rgba(13, 13, 13, 0.98);
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    padding: 0.5rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, rgba(13, 110, 253, 0.9), rgba(13, 110, 253, 0.7)), 
                url('https://images.unsplash.com/photo-1522071820081-009f0129c71c?w=1920') center/cover;
    min-height: 100vh;
    padding-top: 76px;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, rgba(13, 110, 253, 0.9), rgba(13, 110, 253, 0.7)), 
                url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1920') center/cover;
    padding: 150px 0 100px;
    margin-top: 76px;
}

/* Cards */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 10px;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15) !important;
}

/* Botones */
.btn {
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    border: none;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.4);
}

/* Secciones */
section {
    padding: 80px 0;
}

/* Footer */
footer {
    background-color: var(--dark-color);
}

footer a:hover {
    color: var(--primary-color) !important;
}

/* Animaciones */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .page-header {
        padding: 120px 0 80px;
    }
    
    section {
        padding: 60px 0;
    }
}

/* Utilidades */
.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

/* Redes Sociales */
.social-links a {
    transition: all 0.3s ease;
}

.social-links a:hover {
    transform: translateY(-3px);
    display: inline-block;
}

/* Formularios */
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Imágenes */
img {
    max-width: 100%;
    height: auto;
}

/* Loader */
.loader {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}