/* Modern LMS Portal Design System */

:root {
    --primary-color: #4e73df;
    --secondary-color: #858796;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --dark-color: #5a5c69;
    --light-bg: #f8f9fc;
    --glass-bg: rgba(255, 255, 255, 0.9);
    --card-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
}

.modern-material-card {
    background: #fff;
    border-radius: 15px;
    border: none;
    box-shadow: var(--card-shadow);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.modern-material-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
}

.card-header-icon {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    position: relative;
}

.bg-primary-light { background-color: #e8f0fe; }
.bg-danger-light { background-color: #fee8e8; }

.material-type-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
}

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

.material-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.75rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.material-meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 1rem;
}

.meta-item {
    font-size: 0.8rem;
    color: #666;
    display: flex;
    align-items: center;
    gap: 5px;
}

.meta-item i {
    font-size: 0.9rem;
    width: 15px;
}

.material-desc {
    font-size: 0.85rem;
    color: #777;
    margin-bottom: 1.5rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.card-actions {
    display: flex;
    gap: 8px;
    margin-top: auto;
}

.btn-action {
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.view-btn {
    background-color: var(--primary-color);
    color: #fff;
    flex-grow: 1;
}

.view-btn:hover {
    background-color: #2e59d9;
    color: #fff;
    transform: scale(1.05);
}

.download-btn {
    background-color: #f1f3f9;
    color: var(--dark-color);
}

.download-btn:hover {
    background-color: #e2e6ea;
}

.edit-btn { background-color: #f1f3f9; color: var(--info-color); }
.delete-btn { background-color: #f1f3f9; color: var(--danger-color); }

.no-materials {
    background: #fff;
    border-radius: 20px;
    padding: 4rem 2rem !important;
}

.empty-state-icon {
    font-size: 5rem;
    color: #e2e8f0;
    margin-bottom: 1.5rem;
}

.no-materials h3 {
    font-weight: 700;
    color: #4a5568;
}

.no-materials p {
    color: #718096;
    max-width: 400px;
    margin: 0 auto;
}