/* Materials page - subject grid */

.materials-container {
    max-width: 900px;
    margin: 15px auto 15px;
    padding: 20px 20px;
    width: 100%;
    position: relative;
    box-sizing: border-box;
}

.grid-view {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

@media (min-width: 600px) { .grid-view { grid-template-columns: repeat(4, 1fr); } }

.subject-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    aspect-ratio: 1 / 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.subject-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(0,242,255,0.1) 0%, transparent 100%);
    opacity: 0;
    transition: 0.3s;
}

.subject-card:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--primary);
    box-shadow: 0 10px 30px -10px rgba(0, 242, 255, 0.2);
}

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

.subject-card:active { transform: scale(0.96); }

.subject-card .card-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    filter: drop-shadow(0 0 10px rgba(0,0,0,0.5));
    transition: 0.3s;
}

.subject-card:hover .card-icon {
    transform: scale(1.1);
    filter: drop-shadow(0 0 15px var(--primary));
}

.subject-card .card-label {
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    text-align: center;
    z-index: 2;
}

/* Material Colors */
.color-arabic { color: #4DB6AC; }
.color-english { color: #5C6BC0; }
.color-mech { color: #FF7043; }
.color-math { color: #EF5350; }
.color-phys { color: #AB47BC; }
.color-prog { color: #66BB6A; }
.color-draw { color: #FFA726; }
.color-tech { color: #78909C; }
.color-default { color: #00f2ff; }