.lecture-store {
    padding: 6rem 6vw;
    background: #f9fafb;
}

.store-header {
    max-width: 600px;
    margin-bottom: 3rem;
}

.store-header h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    color: #142439;
}

.store-header p {
    color: #6b7280;
    margin-top: 0.5rem;
}

/* Grid */
.lecture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

/* Card */
.lecture-card {
    background: #fff;
    border-radius: 1.2rem;
    padding: 1.8rem;
    border: 1px solid #e5e7eb;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.35s ease;
}

.lecture-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 45px rgba(20, 36, 57, 0.12);
}

/* Month badge */
.month-badge {
    align-self: flex-start;
    background: #142439;
    color: #fff;
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
    font-size: 0.75rem;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

/* Content */
.lecture-card h3 {
    font-size: 1.2rem;
    color: #111827;
}

.lecture-card p {
    font-size: 0.9rem;
    color: #6b7280;
    margin: 0.6rem 0 1.2rem;
}

/* Meta */
.meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: #64748b;
    margin-bottom: 1.5rem;
}

/* Price & action */
.price {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.amount {
    font-weight: 600;
    font-size: 1.1rem;
    color: #142439;
}

.price button {
    background: transparent;
    border: 1px solid #142439;
    color: #142439;
    padding: 0.45rem 1.1rem;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.price button:hover {
    background: #142439;
    color: #fff;
}

/* ------------------ RESPONSIVE ------------------ */
@media (max-width: 480px) {
    .meta {
        flex-direction: column;
        gap: 0.4rem;
    }

    .price {
        flex-direction: column;
        gap: 0.8rem;
        align-items: flex-start;
    }
}