/* =============================================================================
   PORTFOLIO PAGE
   ============================================================================= */

.portfolio-grid {
    column-count: 3;
    column-gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.portfolio-tile {
    display: block;
    position: relative;
    overflow: hidden;
    border: none;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 6px var(--shadow-color);
    transition: transform var(--transition-normal) ease;
    margin-bottom: var(--spacing-sm);
    break-inside: avoid;
}

.portfolio-tile:hover {
    transform: scale(1.03);
    background: none;
}

.portfolio-tile img {
    width: 100%;
    height: auto;
    display: block;
    max-width: 100%;
}

@media (max-width: 900px) {
    .portfolio-grid { column-count: 2; }
}

@media (max-width: 600px) {
    .portfolio-grid { column-count: 1; }
}

/* =============================================================================
   LIGHTBOX
   ============================================================================= */

.portfolio-lightbox {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.portfolio-lightbox[hidden] {
    display: none;
}

.portfolio-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
}

.portfolio-lightbox-content {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--background-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px var(--shadow-color);
}

.portfolio-lightbox-content img {
    max-width: 100%;
    max-height: 70vh;
    width: auto;
    height: auto;
    display: block;
    border-radius: var(--radius-sm);
}

.portfolio-lightbox-close {
    position: absolute;
    top: -14px;
    right: -14px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--link-color);
    color: var(--background-color);
    font-size: 1.2em;
    line-height: 1;
    cursor: pointer;
}

.portfolio-lightbox-caption {
    margin-top: var(--spacing-sm);
    text-align: center;
}

.portfolio-lightbox-caption a {
    font-size: 1.1em;
}

.portfolio-lightbox-caption p {
    margin: var(--spacing-xs) 0 0;
    opacity: 0.85;
}

.portfolio-lightbox-caption p:empty {
    display: none;
}