/* ===== Portfolio Section ===== */
.portfolio {
    background: transparent;
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--color-text-secondary);
    padding: 10px 24px;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: none;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--color-bg);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: none;
    transition: all var(--transition-normal);
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-image {
    width: 100%;
    height: 100%;
}

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

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

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 10, 0.95) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 32px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.portfolio-item:hover .portfolio-overlay h3 {
    transform: translateY(0);
}

.portfolio-overlay p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    transform: translateY(20px);
    transition: transform var(--transition-normal) 0.1s;
}

.portfolio-item:hover .portfolio-overlay p {
    transform: translateY(0);
}

.portfolio-link {
    color: var(--color-accent);
    font-weight: 600;
    transform: translateY(20px);
    transition: transform var(--transition-normal) 0.2s;
}

.portfolio-item:hover .portfolio-link {
    transform: translateY(0);
}