:root {
    --blog-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --accent-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --card-bg: rgba(30, 41, 59, 0.6);
    --card-border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(15, 23, 42, 0.8);
    --text-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    --primary-color: #667eea;
    --primary-hover: #5a67d8;
    --success-color: #22d3ee;
    --warning-color: #f59e0b;
    --text-primary: #fff;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
}

/* Effets de particules en arrière-plan */
.blog-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.particle {
    position: absolute;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.1;
    animation: float-particle 15s infinite linear;
}

@keyframes float-particle {
    0% { transform: translateY(100vh) translateX(0) rotate(0deg); }
    100% { transform: translateY(-100px) translateX(200px) rotate(360deg); }
}

/* Hero section améliorée */
.hero-section {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(16, 185, 129, 0.2) 0%, transparent 50%);
    animation: aurora 20s infinite;
}

@keyframes aurora {
    0%, 100% { opacity: 1; transform: scale(1) rotate(0deg); }
    50% { opacity: 0.8; transform: scale(1.1) rotate(1deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 2rem 0;
}

.hero-badge {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: 50px;
    padding: 0.75rem 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    animation: glow-pulse 3s infinite;
}

@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.3); }
    50% { box-shadow: 0 0 40px rgba(99, 102, 241, 0.5); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success-color);
    font-weight: 500;
}

.hero-search {
    max-width: 500px;
    margin-bottom: 2.5rem;
}

.hero-search .form-control {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 2px solid var(--card-border);
    border-radius: 15px;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.hero-search .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--blog-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 0.5rem;
}

/* Visual hero améliorée */
.hero-visual {
    position: relative;
    padding: 2rem 0;
}

.dashboard-preview {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 2px solid var(--card-border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.4),
        0 0 100px rgba(99, 102, 241, 0.1);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: all 0.3s ease;
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg) scale(1.02);
    box-shadow: 
        0 35px 70px -12px rgba(0, 0, 0, 0.5),
        0 0 150px rgba(99, 102, 241, 0.2);
}

/* Cards d'articles améliorées */
.blog-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    height: 100%;
    cursor: pointer;
}

.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.blog-card:hover::before {
    opacity: 1;
}

.blog-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--primary-color);
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.4),
        0 0 50px rgba(99, 102, 241, 0.3);
}

.blog-card-header {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.blog-card-icon {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.9);
    z-index: 2;
    position: relative;
}

.blog-card-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}

.blog-card-featured {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--warning-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 10px rgba(245, 158, 11, 0.5); }
    50% { box-shadow: 0 0 20px rgba(245, 158, 11, 0.8); }
}

.blog-card-content {
    padding: 2rem;
    position: relative;
    z-index: 2;
}

.blog-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
}

.blog-card-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.author-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1;
}

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

.blog-card-stats {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Section filtres améliorée */
.filters-section {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid var(--card-border);
    padding: 2rem;
    margin: 3rem 0;
    position: relative;
    overflow: hidden;
}

.filters-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--blog-gradient);
}

/* Articles grid améliorée */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

/* Pagination améliorée */
.blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 3rem 0;
}

.page-btn {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.page-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

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

/* États vides améliorés */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    margin: 3rem 0;
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.empty-state-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Responsive amélioré */
@media (max-width: 768px) {
    .hero-stats {
        gap: 2rem;
    }
    .stat-number {
        font-size: 2rem;
    }
    .hero-features {
        gap: 1rem;
    }
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .dashboard-preview {
        transform: none;
    }
    .blog-pagination {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
}

/* Animations d'entrée */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hover effects pour les liens */
.nav-link:hover {
    text-shadow: var(--text-glow);
}

/* Amélioration du dropdown utilisateur */
.user-dropdown .dropdown-menu {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
}

.user-dropdown .dropdown-item {
    color: var(--text-secondary);
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 0.25rem;
}

.user-dropdown .dropdown-item:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    transform: translateX(5px);
}

/* Loading states */
.loading-shimmer {
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}