/* Variables CSS para tema blanco minimalista */
:root {
    --primary-color: #007AFF;
    --primary-hover: #005BBB;
    --primary-light: #E5F3FF;
    --background: #ffffff;
    --surface: #f8f9fa;
    --surface-hover: #f1f3f4;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #8e8e93;
    --border-color: #e5e5e7;
    --border-hover: #d1d1d6;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --border-radius: 12px;
    --border-radius-small: 8px;
    --border-radius-large: 16px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

/* Contenedores */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header */
.header {
    background-color: var(--background);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--text-primary);
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-small);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

/* Navegación */
.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-small);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: var(--primary-light);
}

/* Main content */
.main {
    min-height: calc(100vh - 140px);
    padding: var(--spacing-lg) 0;
}

/* Hero section */
.hero {
    text-align: center;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Page header */
.page-header {
    text-align: center;
    padding: var(--spacing-lg) 0;
    background-color: var(--surface);
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.page-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* Sections */
.section-title {
    font-size: 2rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.podcasts-section {
    padding: var(--spacing-xl) 0;
}

/* Grid de podcasts */
.podcasts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

/* Cards de podcast */
.podcast-card {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.podcast-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-hover);
}

.podcast-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.podcast-card:hover::before {
    transform: scaleX(1);
}

.podcast-logo {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    object-fit: cover;
}

.podcast-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.podcast-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.podcast-social-preview {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
}

.social-icon {
    font-size: 1.125rem;
    opacity: 0.7;
}

/* Página individual de podcast */
.podcast-header {
    background-color: var(--surface);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

.podcast-info {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.podcast-logo-large {
    width: 150px;
    height: 150px;
    border-radius: var(--border-radius-large);
    object-fit: cover;
    flex-shrink: 0;
}

.podcast-details h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.podcast-details .podcast-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

/* Enlaces sociales */
.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.875rem;
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

/* Episodios */
.episodes-section {
    padding: var(--spacing-xl) 0;
}

.episodes-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.episode {
    background-color: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.episode:hover {
    box-shadow: var(--shadow-card);
}

.episode-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-sm);
}

.episode-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    flex: 1;
}

.episode-date {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    white-space: nowrap;
    font-weight: 500;
}

.episode-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.episode-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

.description-text {
    margin-bottom: var(--spacing-xs);
}

.read-more-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0;
    text-align: left;
}

.read-more-btn:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Reproductores de audio */
.episode-audio audio {
    width: 100%;
    height: 40px;
    border-radius: var(--border-radius-small);
}

/* Botones */
.load-more-container {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.load-more-btn,
.contact-btn,
.reload-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1rem;
}

.load-more-btn:hover,
.contact-btn:hover,
.reload-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Sección de contacto */
.contact-section {
    padding: var(--spacing-xl) 0;
}

.contact-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    text-align: center;
    box-shadow: var(--shadow-hover);
}

.contact-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.contact-card p {
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.contact-card .contact-btn {
    background-color: white;
    color: var(--primary-color);
}

.contact-card .contact-btn:hover {
    background-color: var(--surface);
}

/* About page */
.about-section {
    padding: var(--spacing-xl) 0;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    color: var(--text-primary);
}

.about-text h2:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.podcast-descriptions {
    margin-top: var(--spacing-lg);
}

.podcast-about {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--surface);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.podcast-about h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

/* Footer */
.footer {
    background-color: var(--surface);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.contact-email {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.contact-email:hover {
    color: var(--primary-color);
}

/* Estados de carga y error */
.loading,
.episodes-loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.no-episodes,
.error-message {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--surface);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 50vh;
}

.error-content {
    text-align: center;
    max-width: 400px;
}

.error-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

/* Información de desarrollo */
.demo-info-section {
    padding: var(--spacing-lg) 0;
    background-color: var(--surface);
}

.demo-info-card {
    background: linear-gradient(135deg, #FFC107, #FF8F00);
    color: #212529;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-hover);
}

.demo-info-card h2 {
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.demo-status h3 {
    margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
    font-size: 1.25rem;
}

.demo-status ul {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-lg);
}

.demo-status li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.demo-status p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

/* Notificaciones */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    max-width: 400px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    animation: slideIn 0.3s ease;
}

.notification-info {
    background-color: var(--primary-color);
    color: white;
}

.notification-success {
    background-color: #28a745;
    color: white;
}

.notification-warning {
    background-color: #ffc107;
    color: #212529;
}

.notification-error {
    background-color: #dc3545;
    color: white;
}

.notification-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
}

.notification-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-size: 1.25rem;
    margin-left: var(--spacing-sm);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .nav-list {
        gap: var(--spacing-sm);
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .podcasts-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .podcast-info {
        flex-direction: column;
        text-align: center;
    }

    .podcast-logo-large {
        width: 120px;
        height: 120px;
        align-self: center;
    }

    .podcast-details h1 {
        font-size: 2rem;
    }

    .social-links {
        justify-content: center;
    }

    .episode-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .episode-date {
        white-space: normal;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .notification {
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        max-width: none;
    }
}

@media (max-width: 480px) {
    .podcast-card {
        padding: var(--spacing-sm);
    }

    .episode {
        padding: var(--spacing-sm);
    }

    .contact-card {
        padding: var(--spacing-lg);
    }

    .hero {
        padding: var(--spacing-lg) 0;
    }

    .page-header {
        padding: var(--spacing-sm) 0;
    }

    .page-header h1 {
        font-size: 2rem;
    }
}

/* Mejoras de accesibilidad */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }
}

/* Dark mode (opcional para futuro) */
@media (prefers-color-scheme: dark) {
    /* Mantener tema claro por especificación */
}

/* Focus styles for accessibility */
button:focus,
.nav-link:focus,
.social-link:focus,
.contact-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Modal de contacto */
.contact-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.contact-modal.active {
    opacity: 1;
    visibility: visible;
}

.contact-modal-content {
    background: var(--background);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.contact-modal.active .contact-modal-content {
    transform: translateY(0);
}

.contact-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.contact-modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.contact-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-small);
    transition: var(--transition);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-modal-close:hover {
    background-color: var(--surface-hover);
    color: var(--text-primary);
}

/* Formulario de contacto */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.form-label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-input,
.form-textarea {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background-color: var(--background);
    color: var(--text-primary);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

.form-select {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--background);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.character-count {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-align: right;
}

.character-count.warning {
    color: #ffc107;
}

.character-count.error {
    color: #dc3545;
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-sm);
}

.form-submit {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    min-width: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.form-submit:hover:not(:disabled) {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.form-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.form-cancel {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.form-cancel:hover {
    background-color: var(--surface-hover);
    color: var(--text-primary);
}

/* Loading spinner para el formulario */
.form-loading {
    width: 18px;
    height: 18px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Mensaje de éxito */
.success-message {
    background-color: #d4edda;
    color: #155724;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid #c3e6cb;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.success-message .icon {
    font-size: 1.25rem;
}

/* Responsive para modal */
@media (max-width: 768px) {
    .contact-modal-content {
        margin: var(--spacing-sm);
        padding: var(--spacing-lg);
        max-width: none;
        width: calc(100% - 2 * var(--spacing-sm));
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-submit,
    .form-cancel {
        width: 100%;
    }
}

/* Print styles */
@media print {
    .header,
    .footer,
    .load-more-container,
    .episode-audio {
        display: none;
    }
    
    .podcast-card,
    .episode {
        break-inside: avoid;
    }
}