/* Study Materials Premium Styles */
.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
    animation: fadeIn 0.6s ease-out;
}

.material-card {
    background: #ffffff;
    border-radius: 20px;
    padding: 1.75rem;
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 2px 4px -1px rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.material-card:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 20px 25px -5px rgba(0, 0, 0, 0.1),
        0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-color: rgba(79, 70, 229, 0.3);
}

.file-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 1.25rem;
    color: #ef4444;
    background: #fef2f2;
    padding: 12px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.material-card:hover .file-icon {
    transform: scale(1.05) rotate(-5deg);
}

.material-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    line-height: 1.3;
    font-family: 'Outfit', sans-serif;
}

.material-meta {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f8fafc;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
}

.download-btn {
    margin-top: auto;
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    border: none;
    padding: 0.8rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.2);
}

.download-btn:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--secondary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.3);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .materials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}