/**
 * Tutorial - CSS Principal
 * TyNox Games Production
 * Design moderne style Epic Games / Gaming
 */

/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
    /* Couleurs principales */
    --tutorial-primary: #6366f1;
    --tutorial-primary-dark: #4f46e5;
    --tutorial-primary-light: #818cf8;
    --tutorial-secondary: #10b981;
    --tutorial-accent: #f59e0b;
    
    /* Couleurs de fond */
    --tutorial-bg-dark: #0f0f13;
    --tutorial-bg-card: #1a1a23;
    --tutorial-bg-card-hover: #242432;
    --tutorial-bg-input: #252532;
    
    /* Couleurs de texte */
    --tutorial-text: #ffffff;
    --tutorial-text-muted: #9ca3af;
    --tutorial-text-light: #d1d5db;
    
    /* Bordures et ombres */
    --tutorial-border: #2d2d3a;
    --tutorial-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --tutorial-shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    
    /* Gradients */
    --tutorial-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --tutorial-gradient-green: linear-gradient(135deg, #10b981 0%, #059669 100%);
    
    /* Rayons de bordure */
    --tutorial-radius: 12px;
    --tutorial-radius-sm: 8px;
    --tutorial-radius-lg: 16px;
    
    /* Transitions */
    --tutorial-transition: all 0.3s ease;
}

/* ============================================
   RESET & BASE
   ============================================ */
.tutorial-container * {
    box-sizing: border-box;
}

.tutorial-container {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--tutorial-bg-dark);
    color: var(--tutorial-text);
    min-height: 100vh;
}

/* ============================================
   HEADER
   ============================================ */
.tutorial-header {
    background: linear-gradient(180deg, rgba(15, 15, 19, 0.95) 0%, rgba(15, 15, 19, 0.8) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--tutorial-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.tutorial-header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.tutorial-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--tutorial-text);
    font-size: 1.5rem;
    font-weight: 700;
}

.tutorial-logo i {
    color: var(--tutorial-primary);
    font-size: 1.75rem;
}

.tutorial-logo span {
    background: var(--tutorial-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.tutorial-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tutorial-nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    color: var(--tutorial-text-muted);
    text-decoration: none;
    border-radius: var(--tutorial-radius-sm);
    transition: var(--tutorial-transition);
    font-weight: 500;
}

.tutorial-nav-link:hover {
    color: var(--tutorial-text);
    background: var(--tutorial-bg-card);
}

.tutorial-nav-link.active {
    color: var(--tutorial-primary-light);
    background: rgba(99, 102, 241, 0.1);
}

.tutorial-nav-link i {
    font-size: 1.1rem;
}

/* Bouton créer */
.tutorial-btn-create {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--tutorial-gradient);
    color: white;
    text-decoration: none;
    border-radius: var(--tutorial-radius-sm);
    font-weight: 600;
    transition: var(--tutorial-transition);
    border: none;
    cursor: pointer;
}

.tutorial-btn-create:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* ============================================
   HERO SECTION
   ============================================ */
.tutorial-hero {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.1) 50%, rgba(15, 15, 19, 1) 100%);
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tutorial-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--tutorial-primary), transparent);
}

.tutorial-hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.tutorial-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--tutorial-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tutorial-hero p {
    font-size: 1.25rem;
    color: var(--tutorial-text-muted);
    margin-bottom: 2rem;
}

/* Barre de recherche hero */
.tutorial-search-hero {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.tutorial-search-hero input {
    width: 100%;
    padding: 1rem 1.5rem 1rem 3.5rem;
    background: var(--tutorial-bg-card);
    border: 2px solid var(--tutorial-border);
    border-radius: 50px;
    color: var(--tutorial-text);
    font-size: 1rem;
    transition: var(--tutorial-transition);
}

.tutorial-search-hero input:focus {
    outline: none;
    border-color: var(--tutorial-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.tutorial-search-hero i {
    position: absolute;
    left: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--tutorial-text-muted);
}

/* ============================================
   SECTIONS
   ============================================ */
.tutorial-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.tutorial-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.tutorial-section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--tutorial-text);
}

.tutorial-section-title i {
    color: var(--tutorial-primary);
}

.tutorial-section-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--tutorial-primary-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--tutorial-transition);
}

.tutorial-section-link:hover {
    color: var(--tutorial-text);
}

/* ============================================
   GRILLE DE CARTES
   ============================================ */
.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.tutorial-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 1024px) {
    .tutorial-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .tutorial-grid-3,
    .tutorial-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   CARTES
   ============================================ */
.tutorial-card {
    background: var(--tutorial-bg-card);
    border-radius: var(--tutorial-radius);
    overflow: hidden;
    transition: var(--tutorial-transition);
    border: 1px solid var(--tutorial-border);
}

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

.tutorial-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

/* Image de la carte */
.tutorial-card-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--tutorial-bg-card-hover);
}

.tutorial-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--tutorial-transition);
}

.tutorial-card:hover .tutorial-card-image img {
    transform: scale(1.05);
}

.tutorial-card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 3rem;
    color: var(--tutorial-text-muted);
}

/* Badge type */
.tutorial-card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: rgba(15, 15, 19, 0.9);
    backdrop-filter: blur(4px);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--tutorial-text);
}

.tutorial-card-badge.ebook {
    color: #3b82f6;
}

.tutorial-card-badge.documentation {
    color: #f59e0b;
}

.tutorial-card-badge.video {
    color: #ef4444;
}

/* Durée vidéo */
.tutorial-card-duration {
    position: absolute;
    bottom: 0.75rem;
    right: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Contenu de la carte */
.tutorial-card-content {
    padding: 1.25rem;
}

.tutorial-card-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--tutorial-primary-light);
    margin-bottom: 0.75rem;
}

.tutorial-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--tutorial-text);
    margin-bottom: 0.5rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tutorial-card-description {
    font-size: 0.875rem;
    color: var(--tutorial-text-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 1rem;
}

/* Footer de la carte */
.tutorial-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--tutorial-border);
}

.tutorial-card-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tutorial-card-author img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}

.tutorial-card-author-name {
    font-size: 0.8rem;
    color: var(--tutorial-text-light);
}

.tutorial-card-stats {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--tutorial-text-muted);
}

.tutorial-card-stats span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ============================================
   PAGE BIBLIOTHÈQUE
   ============================================ */
.tutorial-library-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(15, 15, 19, 1) 100%);
    padding: 3rem 2rem;
    border-bottom: 1px solid var(--tutorial-border);
}

.tutorial-library-header-inner {
    max-width: 1400px;
    margin: 0 auto;
}

.tutorial-library-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.tutorial-library-subtitle {
    color: var(--tutorial-text-muted);
    font-size: 1.1rem;
}

/* Filtres */
.tutorial-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--tutorial-border);
    margin-bottom: 2rem;
}

.tutorial-filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tutorial-filter-label {
    font-size: 0.875rem;
    color: var(--tutorial-text-muted);
}

.tutorial-filter-select {
    padding: 0.5rem 2rem 0.5rem 1rem;
    background: var(--tutorial-bg-input);
    border: 1px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius-sm);
    color: var(--tutorial-text);
    font-size: 0.875rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239ca3af' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
}

.tutorial-filter-select:focus {
    outline: none;
    border-color: var(--tutorial-primary);
}

.tutorial-search-box {
    flex: 1;
    min-width: 250px;
    position: relative;
}

.tutorial-search-box input {
    width: 100%;
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    background: var(--tutorial-bg-input);
    border: 1px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius-sm);
    color: var(--tutorial-text);
    font-size: 0.875rem;
}

.tutorial-search-box input:focus {
    outline: none;
    border-color: var(--tutorial-primary);
}

.tutorial-search-box i {
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--tutorial-text-muted);
    font-size: 0.875rem;
}

/* Résultats count */
.tutorial-results-count {
    color: var(--tutorial-text-muted);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.tutorial-results-count strong {
    color: var(--tutorial-text);
}

/* ============================================
   PAGE DÉTAIL
   ============================================ */
.tutorial-detail {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.tutorial-detail-header {
    margin-bottom: 2rem;
}

.tutorial-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--tutorial-text-muted);
    margin-bottom: 1.5rem;
}

.tutorial-breadcrumb a {
    color: var(--tutorial-primary-light);
    text-decoration: none;
}

.tutorial-breadcrumb a:hover {
    text-decoration: underline;
}

.tutorial-detail-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.tutorial-detail-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem;
    color: var(--tutorial-text-muted);
    font-size: 0.9rem;
}

.tutorial-detail-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tutorial-detail-meta-item i {
    color: var(--tutorial-primary-light);
}

/* Contenu principal */
.tutorial-detail-main {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}

@media (max-width: 1024px) {
    .tutorial-detail-main {
        grid-template-columns: 1fr;
    }
}

/* Media (video/image) */
.tutorial-detail-media {
    background: var(--tutorial-bg-card);
    border-radius: var(--tutorial-radius);
    overflow: hidden;
    margin-bottom: 2rem;
}

.tutorial-detail-media img {
    width: 100%;
    height: auto;
}

.video-embed {
    width: 100%;
    aspect-ratio: 16/9;
}

/* Description */
.tutorial-detail-description {
    background: var(--tutorial-bg-card);
    border-radius: var(--tutorial-radius);
    padding: 2rem;
    margin-bottom: 2rem;
}

.tutorial-detail-description h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--tutorial-text);
}

.tutorial-detail-description p,
.tutorial-detail-description ul,
.tutorial-detail-description ol {
    color: var(--tutorial-text-light);
    line-height: 1.7;
    margin-bottom: 1rem;
}

/* Sidebar */
.tutorial-detail-sidebar {
    position: sticky;
    top: 100px;
}

.tutorial-sidebar-card {
    background: var(--tutorial-bg-card);
    border-radius: var(--tutorial-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.tutorial-sidebar-card h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--tutorial-text);
}

/* Boutons d'action */
.tutorial-action-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tutorial-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: var(--tutorial-radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--tutorial-transition);
    border: none;
    text-decoration: none;
}

.tutorial-btn-primary {
    background: var(--tutorial-gradient);
    color: white;
}

.tutorial-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.tutorial-btn-secondary {
    background: var(--tutorial-bg-input);
    color: var(--tutorial-text);
    border: 1px solid var(--tutorial-border);
}

.tutorial-btn-secondary:hover {
    background: var(--tutorial-bg-card-hover);
    border-color: var(--tutorial-primary);
}

.tutorial-btn-success {
    background: var(--tutorial-gradient-green);
    color: white;
}

.tutorial-btn-danger {
    background: #ef4444;
    color: white;
}

.tutorial-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Auteur */
.tutorial-author-card {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.tutorial-author-info h4 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.tutorial-author-info p {
    font-size: 0.8rem;
    color: var(--tutorial-text-muted);
}

/* Tags */
.tutorial-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tutorial-tag {
    padding: 0.375rem 0.75rem;
    background: var(--tutorial-bg-input);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--tutorial-text-muted);
    text-decoration: none;
    transition: var(--tutorial-transition);
}

.tutorial-tag:hover {
    background: var(--tutorial-primary);
    color: white;
}

/* ============================================
   FORMULAIRE DE CRÉATION
   ============================================ */
.tutorial-form {
    max-width: 900px;
    margin: 0 auto;
}

.tutorial-form-section {
    background: var(--tutorial-bg-card);
    border-radius: var(--tutorial-radius);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.tutorial-form-section h2 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--tutorial-border);
}

.tutorial-form-group {
    margin-bottom: 1.5rem;
}

.tutorial-form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--tutorial-text);
    margin-bottom: 0.5rem;
}

.tutorial-form-label span {
    color: #ef4444;
}

.tutorial-form-input,
.tutorial-form-select,
.tutorial-form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--tutorial-bg-input);
    border: 1px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius-sm);
    color: var(--tutorial-text);
    font-size: 0.95rem;
    transition: var(--tutorial-transition);
}

.tutorial-form-input:focus,
.tutorial-form-select:focus,
.tutorial-form-textarea:focus {
    outline: none;
    border-color: var(--tutorial-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.tutorial-form-textarea {
    min-height: 150px;
    resize: vertical;
}

.tutorial-form-help {
    font-size: 0.8rem;
    color: var(--tutorial-text-muted);
    margin-top: 0.375rem;
}

/* Type selector */
.tutorial-type-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.tutorial-type-option {
    position: relative;
}

.tutorial-type-option input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.tutorial-type-option label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--tutorial-bg-input);
    border: 2px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius);
    cursor: pointer;
    transition: var(--tutorial-transition);
}

.tutorial-type-option label i {
    font-size: 2rem;
    color: var(--tutorial-text-muted);
}

.tutorial-type-option input:checked + label {
    border-color: var(--tutorial-primary);
    background: rgba(99, 102, 241, 0.1);
}

.tutorial-type-option input:checked + label i {
    color: var(--tutorial-primary);
}

/* Upload zone */
.tutorial-upload-zone {
    border: 2px dashed var(--tutorial-border);
    border-radius: var(--tutorial-radius);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--tutorial-transition);
}

.tutorial-upload-zone:hover {
    border-color: var(--tutorial-primary);
    background: rgba(99, 102, 241, 0.05);
}

.tutorial-upload-zone.dragover {
    border-color: var(--tutorial-primary);
    background: rgba(99, 102, 241, 0.1);
}

.tutorial-upload-zone i {
    font-size: 3rem;
    color: var(--tutorial-text-muted);
    margin-bottom: 1rem;
}

.tutorial-upload-zone p {
    color: var(--tutorial-text-muted);
    margin-bottom: 0.5rem;
}

.tutorial-upload-zone .allowed-types {
    font-size: 0.8rem;
    color: var(--tutorial-text-muted);
}

/* ============================================
   PAGINATION
   ============================================ */
.tutorial-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 3rem;
}

.tutorial-pagination a,
.tutorial-pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    background: var(--tutorial-bg-card);
    border: 1px solid var(--tutorial-border);
    border-radius: var(--tutorial-radius-sm);
    color: var(--tutorial-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--tutorial-transition);
}

.tutorial-pagination a:hover {
    border-color: var(--tutorial-primary);
    background: var(--tutorial-bg-card-hover);
}

.tutorial-pagination .active {
    background: var(--tutorial-primary);
    border-color: var(--tutorial-primary);
    color: white;
}

.tutorial-pagination .disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================
   MESSAGES & ALERTES
   ============================================ */
.tutorial-alert {
    padding: 1rem 1.5rem;
    border-radius: var(--tutorial-radius-sm);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.tutorial-alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.tutorial-alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.tutorial-alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #f59e0b;
}

.tutorial-alert-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #3b82f6;
}

/* ============================================
   EMPTY STATE
   ============================================ */
.tutorial-empty {
    text-align: center;
    padding: 4rem 2rem;
}

.tutorial-empty i {
    font-size: 4rem;
    color: var(--tutorial-text-muted);
    margin-bottom: 1.5rem;
}

.tutorial-empty h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.tutorial-empty p {
    color: var(--tutorial-text-muted);
    margin-bottom: 1.5rem;
}

/* ============================================
   FOOTER
   ============================================ */
.tutorial-footer {
    background: var(--tutorial-bg-card);
    border-top: 1px solid var(--tutorial-border);
    padding: 2rem;
    text-align: center;
    margin-top: 4rem;
}

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

.tutorial-footer a {
    color: var(--tutorial-primary-light);
    text-decoration: none;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .tutorial-header-inner {
        flex-direction: column;
        gap: 1rem;
    }
    
    .tutorial-nav {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .tutorial-hero h1 {
        font-size: 2rem;
    }
    
    .tutorial-hero p {
        font-size: 1rem;
    }
    
    .tutorial-section {
        padding: 2rem 1rem;
    }
    
    .tutorial-detail-title {
        font-size: 1.75rem;
    }
    
    .tutorial-type-selector {
        grid-template-columns: 1fr;
    }
    
    .tutorial-filters {
        flex-direction: column;
    }
    
    .tutorial-search-box {
        min-width: 100%;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tutorial-card {
    animation: fadeIn 0.3s ease forwards;
}

.tutorial-card:nth-child(2) { animation-delay: 0.05s; }
.tutorial-card:nth-child(3) { animation-delay: 0.1s; }
.tutorial-card:nth-child(4) { animation-delay: 0.15s; }
.tutorial-card:nth-child(5) { animation-delay: 0.2s; }
.tutorial-card:nth-child(6) { animation-delay: 0.25s; }

/* ============================================
   LOADER
   ============================================ */
.tutorial-loader {
    display: flex;
    justify-content: center;
    padding: 3rem;
}

.tutorial-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--tutorial-border);
    border-top-color: var(--tutorial-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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