/* ===================================
   Teoria U2 Index - Estils específics
   =================================== */

.theory-index-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
    padding-top: 1rem;
}

.theory-module-card {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.theory-module-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: transform 0.4s ease;
}

.theory-module-card:hover {
    transform: translateX(12px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-secondary);
    background: var(--bg-primary);
}

.theory-module-card:hover::before {
    transform: scaleY(1);
}

.module-number {
    width: 66px;
    height: 66px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.3rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

.theory-module-card:hover .module-number {
    transform: rotate(5deg) scale(1.1);
}

.module-info {
    flex-grow: 1;
}

.module-info h3 {
    font-size: 1.5rem;
    font-weight: 850;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.module-info p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.view-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--accent-secondary);
    margin-top: 1.25rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.theory-module-card:hover .view-link {
    gap: 1rem;
    color: var(--text-primary);
}

.view-link svg {
    transition: transform 0.3s ease;
}

.theory-module-card:hover .view-link svg {
    transform: translateX(6px);
}

@media (max-width: 768px) {
    .theory-module-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
        padding: 1.75rem;
    }

    .theory-module-card:hover {
        transform: translateY(-5px);
    }

    .module-info h3 {
        font-size: 1.3rem;
    }
}