/* Portfolio Section */
.portfolio {
    padding: 80px 0;
    background: linear-gradient(180deg, #080808 0%, #1a1a1a 50%, #000000 100%);
    min-height: 100vh;
}

.portfolio-intro {
    text-align: center;
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    grid-gap: 40px;
    perspective: 1000px;
}

.project-cube-link {
    text-decoration: none;
    color: inherit;
}

.project-cube {
    width: 100%;
    aspect-ratio: 1;
    cursor: pointer;
    perspective: 1000px;
}

.cube-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform-style: preserve-3d;
}

.project-cube:hover .cube-inner {
    transform: rotateY(180deg);
}

.cube-front,
.cube-back {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    backface-visibility: hidden;
    line-height: 1.4;
}

.cube-front {
    background: linear-gradient(135deg, #4B9CD3, #080808);
    color: var(--text-white);
}

.cube-back {
    background: linear-gradient(135deg, #CC3168, #4B9CD3);
    color: var(--text-white);
    transform: rotateY(180deg);
    font-size: 16px;
}

/* Responsive */
@media (max-width: 768px) {
    .portfolio {
        padding: 40px 0;
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        grid-gap: 20px;
    }

    .portfolio-intro {
        font-size: 16px;
        margin-bottom: 40px;
    }
}