/* Reset y configuración base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Tema oscuro */
body.dark-theme {
    background-color: #1a1a1a;
    color: #e0e0e0;
}

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

/* Header y navegación */
.navbar {
    background-color: #2c3e50;
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h1 {
    color: #3498db;
    font-size: 1.8rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #3498db;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.theme-toggle:hover {
    background-color: rgba(255,255,255,0.1);
}

/* Main content */
main {
    margin-top: 80px;
}

/* Hero section */
.hero {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Botones */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: white;
    color: #3498db;
}

/* Secciones */
section {
    padding: 4rem 0;
}

section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.2rem;
    color: #2c3e50;
}

body.dark-theme section h2 {
    color: #3498db;
}

/* Features */
.features {
    background-color: #f8f9fa;
}

body.dark-theme .features {
    background-color: #2a2a2a;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

body.dark-theme .feature-card {
    background: #3a3a3a;
    color: #e0e0e0;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    color: #3498db;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    border: 2px solid transparent;
}

body.dark-theme .pricing-card {
    background: #3a3a3a;
    color: #e0e0e0;
}

.pricing-card.featured {
    border-color: #3498db;
    transform: scale(1.05);
}

.pricing-card:hover {
    transform: translateY(-5px);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.price {
    margin: 1.5rem 0;
}

.currency {
    font-size: 1.5rem;
    vertical-align: top;
}

.amount {
    font-size: 3rem;
    font-weight: bold;
    color: #3498db;
}

.period {
    font-size: 1rem;
    color: #666;
}

body.dark-theme .period {
    color: #999;
}

.features-list {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.features-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

body.dark-theme .features-list li {
    border-bottom-color: #555;
}

.features-list li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Contact */
.contact {
    background-color: #f8f9fa;
}

body.dark-theme .contact {
    background-color: #2a2a2a;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-info h3 {
    color: #3498db;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.contact-info p {
    margin-bottom: 1rem;
    color: #666;
}

body.dark-theme .contact-info p {
    color: #999;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

body.dark-theme .contact-form {
    background: #3a3a3a;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    background: white;
    color: #333;
}

body.dark-theme .contact-form input,
body.dark-theme .contact-form select,
body.dark-theme .contact-form textarea {
    background: #4a4a4a;
    border-color: #555;
    color: #e0e0e0;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.3);
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-5px);
    }
}