/* Reset mejorado y variables CSS */
:root {
    --primary-color: #e30613;
    --primary-hover: #cc0511;
    --secondary-color: #007BFF;
    --secondary-hover: #0056b3;
    --success-color: #28a745;
    --success-hover: #218838;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-color: #000000;
    --light-color: #ffffff;
    --gray-100: #f8f8f8;
    --gray-200: #f9f9f9;
    --gray-300: #ddd;
    --gray-500: #555555;
    --gray-700: #333333;
    
    --font-family: 'Helvetica Neue', Arial, sans-serif;
    --border-radius: 8px;
    --box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
    
    --container-max-width: 600px;
    --mobile-padding: 1rem;
    --desktop-padding: 2rem;
}

/* Reset universal */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/* Estilos base del body */
body {
    font-family: var(--font-family);
    color: var(--gray-700);
    background-color: var(--gray-100);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Mejoras para elementos específicos del cliente */
body, table, td, a { 
    -webkit-text-size-adjust: 100%; 
    -ms-text-size-adjust: 100%; 
}

img { 
    -ms-interpolation-mode: bicubic; 
    border: 0; 
    height: auto; 
    max-width: 100%; 
    outline: none; 
    text-decoration: none;
    display: block;
}

/* Enlaces iOS mejorados */
a[x-apple-data-detectors] {
    color: inherit !important;
    text-decoration: none !important;
    font-size: inherit !important;
    font-family: inherit !important;
    font-weight: inherit !important;
    line-height: inherit !important;
}

/* Contenedor principal */
.wrapper {
    width: 100%;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--gray-100) 0%, #e8e8e8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 0.5rem;
}

.main-container {
    width: 100%;
    max-width: var(--container-max-width);
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin: 0 auto;
}

/* Header */
.header {
    background-color: var(--dark-color);
    padding: 1rem 0;
    text-align: center;
}

.header-content {
    width: 100%;
    max-width: 100%;
}

.header-image {
    width: 100%;
    height: auto;
    max-width: 600px;
    margin: 0 auto;
}

/* Contenido principal */
.content {
    padding: var(--mobile-padding);
}

.content-inner {
    max-width: 100%;
}

/* Títulos */
.main-title {
    color: var(--dark-color);
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    margin-bottom: 1rem;
    font-weight: 700;
    text-align: center;
    line-height: 1.2;
}

.subtitle {
    color: var(--dark-color);
    font-size: clamp(1rem, 3vw, 1.25rem);
    margin-bottom: 1.5rem;
    font-weight: 600;
    text-align: center;
}

.section-title {
    color: var(--primary-color);
    font-size: 1.125rem;
    margin-bottom: 1rem;
    font-weight: 600;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

/* Texto descriptivo */
.description-text {
    margin-bottom: 2rem;
}

.main-description,
.instruction-text {
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    line-height: 1.6;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--gray-500);
}

.main-description strong,
.instruction-text strong {
    color: var(--dark-color);
}

/* Contenedor de botones de selección */
.button-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: center;
}

.selection-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    max-width: 280px;
    padding: 1rem 1.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    background-color: var(--primary-color);
    color: var(--light-color);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(227, 6, 19, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.selection-button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(227, 6, 19, 0.4);
}

.selection-button:active {
    transform: translateY(0);
}

.selection-button.active {
    background-color: var(--success-color);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

.button-icon {
    font-size: 1.25rem;
}

.button-text {
    font-weight: 600;
}

/* Contenedor de formulario */
.form-container {
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
}

.form-container.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.validation-form {
    background-color: var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--gray-300);
}

.result-form {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

/* Secciones del formulario */
.form-section {
    margin-bottom: 2rem;
    padding: 1rem;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.form-section:last-child {
    margin-bottom: 0;
}

/* Grupos de formulario */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
}

/* Inputs del formulario */
.form-input {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius);
    background-color: var(--light-color);
    transition: var(--transition);
    font-family: var(--font-family);
}

.form-input:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
    transform: translateY(-1px);
}

.form-input.readonly {
    background-color: #f1f3f4;
    color: var(--gray-500);
    cursor: not-allowed;
}

.form-input::placeholder {
    color: #999;
    opacity: 1;
}

/* Acciones del formulario */
.form-actions {
    text-align: center;
    margin-top: 1.5rem;
}

.submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    background-color: var(--secondary-color);
    color: var(--light-color);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 3px 12px rgba(0, 123, 255, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 200px;
}

.submit-button:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 18px rgba(0, 123, 255, 0.4);
}

.submit-button:active {
    transform: translateY(0);
}

.submit-button.success {
    background-color: var(--success-color);
    box-shadow: 0 3px 12px rgba(40, 167, 69, 0.3);
}

.submit-button.success:hover {
    background-color: var(--success-hover);
    box-shadow: 0 5px 18px rgba(40, 167, 69, 0.4);
}

/* Imagen de ejemplo */
.example-image {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-300);
}

.example-img {
    max-width: 100%;
    max-height: 250px;
    width: auto;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    margin: 0 auto;
}

/* Info box mejorada */
.info-box2 {
   
    border-left: 4px solid var(--primary-color);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    padding: 1.5rem;
    margin: 2rem 0;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.info-content {
    max-width: 100%;
}

.info-title {
    color: var(--primary-color);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.info-text {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--gray-500);
    margin: 0;
}

.info-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.info-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.whatsapp-link {
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    color: var(--light-color) !important;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    text-decoration: none !important;
}

.whatsapp-link:hover {
    background: linear-gradient(135deg, #128c7e 0%, #25d366 100%);
    color: var(--light-color) !important;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, #1a1a1a 100%);
    color: var(--light-color);
    padding: var(--desktop-padding);
    text-align: center;
}

.footer-content {
    max-width: 100%;
}

.contact-info {
    margin-bottom: 1.5rem;
}

.contact-item {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
    color: var(--light-color);
}

.contact-item:last-child {
    margin-bottom: 0;
}

.footer-link {
    color: var(--light-color);
    text-decoration: underline;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary-color);
}

/* Sección de redes sociales */
.social-section {
    border-top: 1px solid #333;
    padding-top: 1.5rem;
}

.social-title {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: var(--light-color);
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-link {
    display: inline-block;
    transition: var(--transition);
    border-radius: 50%;
    overflow: hidden;
}

.social-link:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 5px 15px rgba(255,255,255,0.2);
}

.social-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
    display: block;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.loading-spinner {
    text-align: center;
    color: var(--light-color);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--light-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Mensajes de error */
.error-message {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    border: 1px solid #f5c6cb;
    border-left: 4px solid var(--danger-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    animation: slideInDown 0.3s ease-out;
}

.error-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.error-icon {
    font-size: 1.25rem;
    color: var(--danger-color);
}

.error-text {
    color: #721c24;
    font-weight: 500;
    flex: 1;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animaciones de fade-in */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

/* Media Queries responsivas */

/* Móviles pequeños (320px - 480px) */
@media screen and (max-width: 480px) {
    :root {
        --mobile-padding: 0.75rem;
    }
    
    .wrapper {
        padding: 0.5rem 0.25rem;
    }
    
    .content {
        padding: var(--mobile-padding);
    }
    
    .main-title {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }
    
    .subtitle {
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .button-container {
        gap: 0.75rem;
    }
    
    .selection-button {
        width: 100%;
        max-width: none;
        padding: 0.875rem 1rem;
        font-size: 1rem;
    }
    
    .validation-form {
        padding: 1rem;
    }
    
    .form-section {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    .form-input {
        padding: 0.75rem;
        font-size: 16px; /* Previene zoom en iOS */
    }
    
    .submit-button {
        width: 100%;
        min-width: auto;
        padding: 0.875rem 1rem;
        font-size: 0.9rem;
    }
    
    .info-box2 {
        padding: 1rem;
        margin: 1.5rem 0;
    }
    
    .info-title {
        font-size: 1rem;
    }
    
    .info-text {
        font-size: 0.85rem;
    }
    
    .footer {
        padding: 1.5rem 1rem;
    }
    
    .contact-item {
        font-size: 0.85rem;
    }
    
    .social-icons {
        gap: 0.75rem;
    }
    
    .social-icon {
        width: 36px;
        height: 36px;
    }
    
    .example-img {
        max-height: 200px;
    }
}

/* Móviles medianos y grandes (481px - 768px) */
@media screen and (min-width: 481px) and (max-width: 768px) {
    .wrapper {
        padding: 1rem 0.5rem;
    }
    
    .content {
        padding: 1.25rem;
    }
    
    .button-container {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .selection-button {
        width: auto;
        min-width: 160px;
        flex: 1;
        max-width: 200px;
    }
    
    .form-input {
        font-size: 16px; /* Previene zoom en iOS */
    }
    
    .submit-button {
        min-width: 220px;
    }
    
    .social-icons {
        gap: 1.25rem;
    }
}

/* Tablets (769px - 1024px) */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .wrapper {
        padding: 1.5rem 1rem;
    }
    
    .content {
        padding: var(--desktop-padding);
    }
    
    .button-container {
        flex-direction: row;
        justify-content: center;
        gap: 1.5rem;
    }
    
    .selection-button {
        width: auto;
        min-width: 180px;
    }
    
    .validation-form {
        padding: 2rem;
    }
    
    .form-section {
        padding: 1.5rem;
    }
    
    .submit-button {
        min-width: 250px;
        padding: 1.125rem 2.5rem;
    }
    
    .info-box2 {
        padding: 2rem;
    }
}

/* Desktop (1025px+) */
@media screen and (min-width: 1025px) {
    .wrapper {
        padding: 2rem 1rem;
    }
    
    .content {
        padding: var(--desktop-padding);
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.375rem;
    }
    
    .button-container {
        flex-direction: row;
        justify-content: center;
        gap: 2rem;
    }
    
    .selection-button {
        width: auto;
        min-width: 200px;
        padding: 1.125rem 2rem;
        font-size: 1.25rem;
    }
    
    .validation-form {
        padding: 2.5rem;
    }
    
    .form-section {
        padding: 2rem;
    }
    
    .form-input {
        padding: 1rem;
        font-size: 1rem;
    }
    
    .submit-button {
        min-width: 280px;
        padding: 1.25rem 3rem;
        font-size: 1.125rem;
    }
    
    .info-box2 {
        padding: 2.5rem;
    }
    
    .info-title {
        font-size: 1.25rem;
    }
    
    .info-text {
        font-size: 1rem;
    }
}

/* Mejoras para accesibilidad */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Modo oscuro (si el usuario lo prefiere) */
@media (prefers-color-scheme: dark) {
    :root {
        --gray-100: #1a1a1a;
        --gray-200: #2d2d2d;
        --light-color: #ffffff;
        --gray-700: #e0e0e0;
        --gray-500: #b0b0b0;
    }
}

/* Impresión */
@media print {
    .wrapper {
        background: white;
        box-shadow: none;
    }
    
    .header,
    .footer,
    .button-container,
    .form-actions,
    .loading-overlay {
        display: none !important;
    }
    
    .main-container {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .content {
        padding: 1rem;
    }
    
    .form-input {
        border: 1px solid #000;
        background: transparent;
    }
}

/* Mejoras para pantallas de alta densidad */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .header-image,
    .example-img,
    .social-icon {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}