.header-section {
    padding: 4rem 2rem;
    text-align: center;
    color: white;
    margin-bottom: 3rem;
}

.header-section h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.header-section p {
    font-size: 1.2rem;
    opacity: 0.95;
}

.container-custom {
    max-width: 1200px;
    margin: -2rem auto 2rem;
    padding: 0 1rem;
}

.formations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.card {
    border: none;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    animation: fadeInUp 0.6s ease-out backwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }
.card:nth-child(6) { animation-delay: 0.6s; }

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.card-header {
    padding: 2rem 1.5rem 1rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.5rem;
    line-height: 1.3;
    flex: 1;
}

.card-action-buttons {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
}

.btn-action {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
}

.btn-edit {
    background: #ffc107;
    color: #000;
}

.btn-edit:hover {
    background: #ffb300;
    transform: scale(1.1);
}

.btn-delete {
    background: #dc3545;
    color: #fff;
}

.btn-delete:hover {
    background: #c82333;
    transform: scale(1.1);
}

.card-text {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.5;
}

.card-body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.meta-info {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
}

.meta-item strong {
    color: #667eea;
    min-width: 80px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    margin-top: auto;
    transition: all 0.3s ease;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    color: white;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    color: #666;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.6;
}

.btn-add {
    background: white;
    color: #667eea;
    font-weight: bold;
    border-radius: 50px;
    padding: 10px 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: none;
    transition: 0.3s;
    margin-top: 1rem;
    cursor: pointer;
}

.btn-add:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    color: #764ba2;
}

@media (max-width: 768px) {
    body {
        padding-bottom: 60px;
    }
    
    .header-section h1 {
        font-size: 2rem;
    }
    
    .formations-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}