:root {
    /* Colores */
    --primary: #0A3055;
    --primary-light: #1a4b8c;
    --primary-dark: #061d36;
    --secondary: #F68B1F;
    --secondary-light: #f9a44e;
    --secondary-dark: #c46e16;
    --accent: #4CAF50;
    --danger: #F44336;
    --warning: #FFC107;
    --info: #2196F3;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --light-gray: #e9ecef;
    
    /* Tipografía */
    --font-family: 'Roboto', sans-serif;
    --font-size-base: 16px;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Bordes */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s ease;
    --transition-slow: 0.6s ease;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark);
    background-color: #fff;
}

a {
    text-decoration: none;
    color: inherit;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Hero Section */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--primary), var(--primary-light)), url('img/hero-bg.jpg') center/cover no-repeat;
    color: white;
    padding: var(--spacing-xxl) 0;
    text-align: center;
    min-height: 500px;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero .logo {
    height: 80px;
    margin-bottom: var(--spacing-lg);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.4rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    opacity: 0.9;
}

.btn-hero {
    font-size: 1.2rem;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
}

.btn-hero:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Sección de Registro */
.registration-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--light);
}

.registration-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.registration-form-container {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.registration-form-container h2 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.registration-form-container .subtitle {
    color: var(--gray);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xl);
}

.registration-form {
    display: grid;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 500;
    color: var(--primary);
}

.form-group input,
.form-group select {
    padding: var(--spacing-md);
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(246, 139, 31, 0.2);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.password-strength {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    margin-top: var(--spacing-xs);
}

.strength-bar {
    height: 4px;
    width: 20%;
    background: var(--light-gray);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.strength-text {
    font-size: 0.9rem;
    color: var(--gray);
    margin-left: var(--spacing-sm);
}

.terms-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.terms-group input {
    width: auto;
}

.terms-group label {
    font-weight: normal;
}

.terms-group a {
    color: var(--secondary);
    text-decoration: underline;
}

.login-link {
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--gray);
}

.login-link a {
    color: var(--secondary);
    font-weight: 500;
}

.registration-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.features-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tablet-icon {
    width: 28px;
    height: 28px;
}

.registration-features h3 {
    font-size: 1.8rem;
    color: var(--primary);
    margin: 0;
}

.features-list {
    display: grid;
    gap: var(--spacing-lg);
}

.features-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.feature-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.testimonial {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
}

.testimonial-content {
    font-style: italic;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    color: var(--gray);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.testimonial-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author strong {
    display: block;
    color: var(--primary);
    font-size: 1rem;
}

.testimonial-author span {
    font-size: 0.9rem;
    color: var(--gray);
}

/* Sección de Aplicaciones */
.apps-section {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.apps-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.section-description {
    text-align: center;
    color: var(--gray);
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.app-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.app-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.app-icon {
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    background: var(--light);
}

.app-icon img {
    max-height: 100px;
    object-fit: contain;
}

.app-info {
    padding: var(--spacing-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.app-info h3 {
    color: var(--primary);
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.app-icon-small {
    width: 20px;
    height: 20px;
}

.app-info p {
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
    font-size: 1rem;
}

.app-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--secondary-light);
    color: var(--primary);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Sección de Planes */
.plans-section {
    padding: var(--spacing-xxl) 0;
    background: var(--light);
}

.plans-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--light-gray);
}

.plan-tab {
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--gray);
    cursor: pointer;
    position: relative;
    transition: var(--transition-normal);
}

.plan-tab.active {
    color: var(--secondary);
}

.plan-tab.active:after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--secondary);
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.plan-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.plan-card.recommended {
    border: 3px solid var(--secondary);
}

.recommended-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--secondary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
}

.plan-header {
    padding: var(--spacing-lg);
    text-align: center;
    background: var(--primary);
    color: white;
}

.plan-card.recommended .plan-header {
    background: var(--secondary);
}

.plan-header h3 {
    font-size: 1.6rem;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.plan-icon {
    width: 20px;
    height: 20px;
}

.plan-price {
    margin-bottom: var(--spacing-sm);
}

.plan-price .price {
    font-size: 2.2rem;
    font-weight: 700;
}

.plan-price .period {
    font-size: 1.1rem;
    opacity: 0.8;
}

.plan-header p {
    font-size: 1rem;
    opacity: 0.9;
}

.plan-features {
    padding: var(--spacing-lg);
}

.plan-features li {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    align-items: center;
    font-size: 1rem;
}

.plan-features li:before {
    content: "✓";
    color: var(--accent);
    margin-right: var(--spacing-md);
    font-weight: bold;
}

.plan-card .btn {
    margin: var(--spacing-lg);
    font-size: 1.1rem;
    padding: var(--spacing-md) var(--spacing-xl);
}

.custom-plan {
    text-align: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.custom-plan h3 {
    color: var(--primary);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
}

.custom-plan p {
    color: var(--gray);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Botones */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--secondary);
    color: white;
    border-color: var(--secondary);
}

.btn-primary:hover {
    background: var(--secondary-dark);
    border-color: var(--secondary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-secondary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: var(--spacing-xl) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo img {
    height: 50px;
    margin-bottom: var(--spacing-md);
}

.footer-logo p {
    opacity: 0.8;
    margin-top: var(--spacing-sm);
    font-size: 1rem;
}

.footer-links h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer-links ul {
    display: grid;
    gap: var(--spacing-sm);
}

.footer-links a {
    opacity: 0.8;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.newsletter-form input {
    flex-grow: 1;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
}

.newsletter-form button {
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    padding: 0 var(--spacing-lg);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition-normal);
}

.newsletter-form button:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

.social-links {
    display: flex;
    gap: var(--spacing-lg);
}

.social-links img {
    width: 32px;
    height: 32px;
    opacity: 0.8;
    transition: var(--transition-fast);
}

.social-links img:hover {
    opacity: 1;
    transform: scale(1.1);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-legal a {
    font-size: 0.9rem;
    opacity: 0.8;
    transition: var(--transition-fast);
}

.footer-legal a:hover {
    opacity: 1;
}

.footer-copyright {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Select2 personalización */
.select2-container--default .select2-selection--single {
    height: auto;
    padding: var(--spacing-md);
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius-md);
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 100%;
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
    line-height: 1.5;
    padding-left: 0;
}

.select2-container--default .select2-dropdown {
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius-md);
}

.select2-container--default .select2-results__option--highlighted[aria-selected] {
    background-color: var(--secondary);
}

/* Responsive */
@media (max-width: 992px) {
    .registration-container {
        grid-template-columns: 1fr;
    }
    
    .registration-features {
        order: -1;
    }
    
    .plans-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: 400px;
        padding: var(--spacing-xl) 0;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .hero {
        padding: var(--spacing-lg) 0;
        min-height: 300px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero .logo {
        height: 60px;
    }
    
    .registration-form-container,
    .registration-features {
        padding: var(--spacing-lg);
    }
    
    .testimonial {
        padding: var(--spacing-md);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal {
        justify-content: center;
    }
}