/* ========== TUTORIALES - CLEAN PREMIUM (APPLE STYLE) ========== */

:root {
    /* Modo Claro */
    --tutorial-bg: #ffffff;
    --tutorial-surface: #f9f9fb;
    --tutorial-border: rgba(60, 60, 67, 0.08);
    --tutorial-text-primary: #1d1c21;
    --tutorial-text-secondary: #6c6a70;
    --tutorial-text-tertiary: #8e8c93;
    --tutorial-accent-blue: #0071e3;
    --tutorial-accent-green: #28cd41;
    --tutorial-accent-red: #ff3b30;
    --tutorial-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.02);
    --tutorial-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.04);
    --tutorial-radius-lg: 24px;
    --tutorial-radius-md: 16px;
    --tutorial-radius-sm: 12px;
    --tutorial-font: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', sans-serif;
    --tutorial-font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
    --card-bg: #ffffff;
    --hover-bg: #f5f5f7;
    --youtube-red: #ff0000;
    --youtube-hover: #e50000;
    --thumbnail-bg: #e8e8ed;
    --overlay-bg: rgba(0, 0, 0, 0.2);
    --duration-bg: rgba(0, 0, 0, 0.7);
    --guide-icon-bg: rgba(0, 113, 227, 0.1);
    --gradient-start: #f9f9fb;
    --gradient-end: #ffffff;
    
    /* Variables para mensaje "sin tutoriales" */
    --no-tutoriales-bg-start: #f9f9fb;
    --no-tutoriales-bg-end: #ffffff;
    --no-tutoriales-icono-bg-start: #e0e0e0;
    --no-tutoriales-icono-bg-end: #f0f0f0;
    --no-tutoriales-icono-color: #666666;
    --no-tutoriales-titulo: #1e1e2f;
    --no-tutoriales-descripcion: #666666;
    --no-tutoriales-contacto: #888888;
    --no-tutoriales-link: #2563eb;
    --no-tutoriales-link-hover: #1d4ed8;
    --no-tutoriales-btn-bg-start: #2563eb;
    --no-tutoriales-btn-bg-end: #1d4ed8;
    --no-tutoriales-btn-shadow: rgba(37, 99, 235, 0.2);
    --no-tutoriales-btn-shadow-hover: rgba(37, 99, 235, 0.3);
}

/* Modo Oscuro */
[data-theme="dark"] {
    --tutorial-bg: #000000;
    --tutorial-surface: #1c1c1e;
    --tutorial-border: rgba(84, 84, 88, 0.3);
    --tutorial-text-primary: #ffffff;
    --tutorial-text-secondary: #8e8c93;
    --tutorial-text-tertiary: #636366;
    --tutorial-accent-blue: #0a84ff;
    --tutorial-accent-green: #30d158;
    --tutorial-accent-red: #ff453a;
    --tutorial-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --tutorial-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
    --card-bg: #2c2c30;
    --hover-bg: #3a3a3e;
    --youtube-red: #ff0000;
    --youtube-hover: #cc0000;
    --thumbnail-bg: #2c2c2e;
    --overlay-bg: rgba(0, 0, 0, 0.4);
    --duration-bg: rgba(0, 0, 0, 0.8);
    --guide-icon-bg: rgba(10, 132, 255, 0.15);
    --gradient-start: #1c1c1e;
    --gradient-end: #000000;
    
    /* Variables para mensaje "sin tutoriales" - Modo Oscuro */
    --no-tutoriales-bg-start: #1c1c1e;
    --no-tutoriales-bg-end: #000000;
    --no-tutoriales-icono-bg-start: #2c2c30;
    --no-tutoriales-icono-bg-end: #3a3a3e;
    --no-tutoriales-icono-color: #8e8c93;
    --no-tutoriales-titulo: #ffffff;
    --no-tutoriales-descripcion: #aeaeb2;
    --no-tutoriales-contacto: #636366;
    --no-tutoriales-link: #0a84ff;
    --no-tutoriales-link-hover: #409cff;
    --no-tutoriales-btn-bg-start: #0a84ff;
    --no-tutoriales-btn-bg-end: #0066cc;
    --no-tutoriales-btn-shadow: rgba(10, 132, 255, 0.2);
    --no-tutoriales-btn-shadow-hover: rgba(10, 132, 255, 0.3);
}

.tutorials-premium {
    background-color: var(--tutorial-bg);
    padding: 80px 0;
    font-family: var(--tutorial-font);
    color: var(--tutorial-text-primary);
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.tutorials-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

/* --- Tipografía --- */
.tutorials-premium h1,
.tutorials-premium h2,
.tutorials-premium h3 {
    font-family: var(--tutorial-font-display);
    font-weight: 500;
    letter-spacing: -0.02em;
}

.tutorials-premium p {
    color: var(--tutorial-text-secondary);
    transition: color 0.3s ease;
}

/* --- Encabezado --- */
.tutorials-header {
    text-align: center;
    margin-bottom: 48px;
}

.tutorials-subtitle {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--tutorial-text-secondary);
    margin-bottom: 16px;
    transition: color 0.3s ease;
}

.tutorials-subtitle i {
    margin-right: 6px;
    opacity: 0.7;
}

.tutorials-title {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    color: var(--tutorial-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    transition: color 0.3s ease;
}

.version-badge {
    background: var(--tutorial-surface);
    color: var(--tutorial-text-primary);
    padding: 6px 18px;
    border-radius: 40px;
    font-size: 1.1rem;
    font-weight: 500;
    border: 1px solid var(--tutorial-border);
    box-shadow: var(--tutorial-shadow-sm);
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

.tutorials-description {
    font-size: 1.2rem;
    color: var(--tutorial-text-secondary);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.5;
    font-weight: 400;
    transition: color 0.3s ease;
}

/* --- Banner canal YouTube --- */
.youtube-channel-banner {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: 1px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius-lg);
    padding: 32px 36px;
    margin-bottom: 48px;
    box-shadow: var(--tutorial-shadow-sm);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.channel-banner-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.channel-info {
    display: flex;
    align-items: center;
    gap: 24px;
}

.channel-icon {
    width: 70px;
    height: 70px;
    background: var(--youtube-red);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.2rem;
    box-shadow: 0 10px 20px -5px rgba(255, 0, 0, 0.2);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

[data-theme="dark"] .channel-icon {
    box-shadow: 0 10px 20px -5px rgba(255, 0, 0, 0.3);
}

.channel-details h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--tutorial-text-primary);
    transition: color 0.3s ease;
}

.channel-details p {
    font-size: 1rem;
    color: var(--tutorial-text-secondary);
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

.channel-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.channel-stats span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--tutorial-text-tertiary);
    transition: color 0.3s ease;
}

.channel-stats i {
    color: var(--tutorial-accent-blue);
    transition: color 0.3s ease;
}

.youtube-subscribe-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--youtube-red);
    color: white;
    padding: 14px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    white-space: nowrap;
}

.youtube-subscribe-btn:hover {
    background: var(--youtube-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(255, 0, 0, 0.3);
}

[data-theme="dark"] .youtube-subscribe-btn:hover {
    box-shadow: 0 10px 20px -5px rgba(255, 0, 0, 0.4);
}

.youtube-subscribe-btn i:first-child {
    font-size: 1.3rem;
}

/* --- Categorías --- */
.tutorials-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 40px;
}

.category-btn {
    background: transparent;
    border: 1px solid var(--tutorial-border);
    border-radius: 50px;
    padding: 10px 22px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--tutorial-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--tutorial-font);
}

.category-btn:hover {
    background: var(--tutorial-surface);
    border-color: var(--tutorial-accent-blue);
    color: var(--tutorial-accent-blue);
}

.category-btn.active {
    background: var(--tutorial-accent-blue);
    border-color: var(--tutorial-accent-blue);
    color: white;
}

/* --- Grid de tutoriales --- */
.tutorials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.tutorial-card {
    background: var(--tutorial-surface);
    border: 1px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius-md);
    overflow: hidden;
    transition: all 0.2s ease;
    cursor: pointer;
}

.tutorial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--tutorial-shadow-md);
    border-color: var(--tutorial-accent-blue);
}

[data-theme="dark"] .tutorial-card:hover {
    border-color: rgba(10, 132, 255, 0.4);
}

.tutorial-thumbnail {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--thumbnail-bg);
    transition: background 0.3s ease;
}

.tutorial-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease, background 0.3s ease;
}

.tutorial-card:hover .play-overlay {
    opacity: 1;
}

.play-overlay i {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--youtube-red);
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.tutorial-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: var(--duration-bg);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    backdrop-filter: blur(4px);
    transition: background 0.3s ease;
}

.tutorial-info {
    padding: 20px;
}

.tutorial-category {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--tutorial-accent-blue);
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.tutorial-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--tutorial-text-primary);
    line-height: 1.4;
    transition: color 0.3s ease;
}

.tutorial-description {
    font-size: 0.9rem;
    color: var(--tutorial-text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.tutorial-meta {
    display: flex;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--tutorial-text-tertiary);
    transition: color 0.3s ease;
}

.tutorial-meta i {
    margin-right: 4px;
    opacity: 0.7;
}

/* --- Footer con botón ver más --- */
.tutorials-footer {
    text-align: center;
    margin-bottom: 64px;
}

.view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: transparent;
    border: 2px solid var(--tutorial-border);
    border-radius: 50px;
    padding: 16px 36px;
    color: var(--tutorial-text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.view-all-btn:hover {
    border-color: var(--youtube-red);
    color: var(--youtube-red);
    transform: translateY(-2px);
    box-shadow: var(--tutorial-shadow-sm);
}

.view-all-btn i {
    font-size: 1.3rem;
}

/* --- Guías escritas --- */
.written-guides {
    margin-bottom: 64px;
}

.guides-title {
    font-size: 1.4rem;
    font-weight: 500;
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--tutorial-text-primary);
    transition: color 0.3s ease;
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.guide-card {
    background: var(--tutorial-surface);
    border: 1px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius-md);
    padding: 24px;
    display: flex;
    gap: 16px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.guide-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--tutorial-shadow-md);
    border-color: var(--tutorial-accent-blue);
}

.guide-icon {
    width: 48px;
    height: 48px;
    background: var(--guide-icon-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tutorial-accent-blue);
    font-size: 1.3rem;
    flex-shrink: 0;
    transition: background 0.3s ease, color 0.3s ease;
}

.guide-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--tutorial-text-primary);
    transition: color 0.3s ease;
}

.guide-content p {
    font-size: 0.85rem;
    color: var(--tutorial-text-secondary);
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.guide-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--tutorial-accent-blue);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color 0.3s ease;
}

.guide-link i {
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

.guide-card:hover .guide-link i {
    transform: translateX(4px);
}

/* --- CTA de suscripción --- */
.subscribe-cta {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: 1px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius-lg);
    padding: 36px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 28px;
    box-shadow: var(--tutorial-shadow-sm);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.cta-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

.cta-content i {
    font-size: 3rem;
    color: var(--youtube-red);
    transition: color 0.3s ease;
}

.cta-content h3 {
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--tutorial-text-primary);
    transition: color 0.3s ease;
}

.cta-content p {
    font-size: 1rem;
    color: var(--tutorial-text-secondary);
    transition: color 0.3s ease;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--youtube-red);
    color: white;
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.cta-button:hover {
    background: var(--youtube-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(255, 0, 0, 0.3);
}

[data-theme="dark"] .cta-button:hover {
    box-shadow: 0 10px 20px -5px rgba(255, 0, 0, 0.4);
}

/* --- Mensaje cuando no hay tutoriales --- */
.no-tutoriales-mensaje {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--no-tutoriales-bg-start) 0%, var(--no-tutoriales-bg-end) 100%);
    border-radius: var(--tutorial-radius-lg);
    margin: 3rem 0;
    box-shadow: var(--tutorial-shadow-md);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.no-tutoriales-icono {
    width: 100px;
    height: 100px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, var(--no-tutoriales-icono-bg-start) 0%, var(--no-tutoriales-icono-bg-end) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--no-tutoriales-icono-color);
    font-size: 3rem;
    transition: background 0.3s ease, color 0.3s ease;
}

.no-tutoriales-titulo {
    font-size: 2rem;
    color: var(--no-tutoriales-titulo);
    margin-bottom: 1rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.no-tutoriales-descripcion {
    font-size: 1.2rem;
    color: var(--no-tutoriales-descripcion);
    max-width: 600px;
    margin: 0 auto 1.5rem;
    line-height: 1.6;
    transition: color 0.3s ease;
}

.no-tutoriales-contacto {
    font-size: 1rem;
    color: var(--no-tutoriales-contacto);
    margin-bottom: 2rem;
    transition: color 0.3s ease;
}

.no-tutoriales-contacto a {
    color: var(--no-tutoriales-link);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.no-tutoriales-contacto a:hover {
    color: var(--no-tutoriales-link-hover);
    text-decoration: underline;
}

.btn-notificar {
    background: linear-gradient(135deg, var(--no-tutoriales-btn-bg-start), var(--no-tutoriales-btn-bg-end));
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px var(--no-tutoriales-btn-shadow);
}

.btn-notificar:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px var(--no-tutoriales-btn-shadow-hover);
}

.btn-notificar i {
    font-size: 1.2rem;
    transition: transform 0.2s ease;
}

.btn-notificar:hover i {
    transform: translateX(4px);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .channel-banner-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .channel-info {
        width: 100%;
    }
    
    .youtube-subscribe-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .tutorials-premium {
        padding: 60px 0;
    }
    
    .tutorials-container {
        padding: 0 24px;
    }
    
    .channel-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .channel-stats {
        flex-direction: column;
        gap: 8px;
    }
    
    .tutorials-categories {
        overflow-x: auto;
        padding-bottom: 12px;
        justify-content: flex-start;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .category-btn {
        white-space: nowrap;
    }
    
    .guides-grid {
        grid-template-columns: 1fr;
    }
    
    .subscribe-cta {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .cta-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .cta-button {
        width: 100%;
        justify-content: center;
    }
    
    .no-tutoriales-mensaje {
        padding: 3rem 1.5rem;
    }
    
    .no-tutoriales-titulo {
        font-size: 1.5rem;
    }
    
    .no-tutoriales-descripcion {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .tutorials-header {
        margin-bottom: 36px;
    }
    
    .tutorials-title {
        flex-direction: column;
        gap: 12px;
    }
    
    .youtube-channel-banner {
        padding: 24px;
    }
    
    .channel-icon {
        width: 50px;
        height: 50px;
        font-size: 1.6rem;
    }
    
    .tutorial-meta {
        flex-direction: column;
        gap: 4px;
    }
    
    .guide-card {
        padding: 20px;
    }
    
    .no-tutoriales-icono {
        width: 70px;
        height: 70px;
        font-size: 2.2rem;
    }
    
    .btn-notificar {
        width: 100%;
        justify-content: center;
    }
}