/* ======= PORTFOLIO CARD STYLES ======= */
.portfolio-card {
    height: 100%;
    width: 100%;
    perspective: 2000px;
    cursor: pointer;
}

.portfolio-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-lg);
}

.portfolio-card.flipped .portfolio-card-inner {
    transform: rotateY(180deg);
}

.portfolio-card-front, .portfolio-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.portfolio-card-front {
    background-color: var(--color-bg-tertiary);
}

.portfolio-card-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.portfolio-card:hover .portfolio-card-front img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    background: linear-gradient(to top, rgba(10, 10, 20, 0.9), transparent);
    transform: translateY(20%);
    opacity: 0;
    transition: all var(--transition-medium);
}

.portfolio-card:hover .portfolio-overlay {
    transform: translateY(0);
    opacity: 1;
}

.portfolio-card-back {
    background: var(--color-bg-tertiary);
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 3rem;
    text-align: center;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.portfolio-card-back h3 {
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
    color: var(--color-text-dark);
}

.portfolio-card-back h3::after {
    content: '';
    position: absolute;
    bottom: -0.8rem;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-accent);
}

.portfolio-card-back p {
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.6rem;
    line-height: 1.6;
}

.portfolio-item {
    height: 30rem;
    margin-bottom: 3rem;
}

/* ======= FORM SUCCESS MESSAGE ======= */
.form-success {
    text-align: center;
    padding: 4rem 2rem;
}

.form-success i {
    font-size: 5rem;
    color: #4caf50;
    margin-bottom: 2rem;
}

.form-success h3 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

.form-success p {
    color: var(--color-text-secondary);
    font-size: 1.8rem;
}

/* ======= MOBILE MENU TOGGLE ANIMATION ======= */
.menu-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* ======= RESPONSIVE ADJUSTMENTS ======= */
@media screen and (max-width: 768px) {
    .portfolio-item {
        height: 25rem;
    }
}

@media screen and (max-width: 576px) {
    .portfolio-card-back {
        padding: 2rem;
    }
}