.portfolio-page {
    padding: 80px 0 96px;
}

.portfolio-inner {
    max-width: 1120px;
}

.portfolio-header {
    margin: 0 0 32px;
}

.portfolio-title {
    margin: 0;
    font-size: 32px;
    font-weight: 700;
    line-height: 40px;
    letter-spacing: -0.02em;
    color: var(--c-n9, #0a0a0a);
}

.portfolio-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 24px 0 0;
}

.portfolio-tab {
    padding: 8px 16px;
    border: 1px solid var(--c-n2, #ebebeb);
    border-radius: 999px;
    font-size: 14px;
    line-height: 20px;
    color: var(--c-n6, #525252);
    text-decoration: none;
    transition: border-color 0.2s, color 0.2s, background-color 0.2s;
}

.portfolio-tab:hover {
    border-color: var(--c-primary, #001735);
    color: var(--c-primary, #001735);
}

.portfolio-tab.is-active {
    border-color: var(--c-primary, #001735);
    background-color: var(--c-primary, #001735);
    color: #fff;
}

.portfolio-empty {
    padding: 96px 0;
    font-size: 15px;
    text-align: center;
    color: var(--c-n4, #999999);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 40px 24px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.portfolio-card-link {
    display: block;
    color: inherit;
    text-decoration: none;
}

.portfolio-card-thumb {
    overflow: hidden;
    aspect-ratio: 4 / 3;
    border-radius: 8px;
    background-color: var(--c-bg2, #f6f6f6);
}

.portfolio-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}

.portfolio-card-link:hover .portfolio-card-thumb img {
    transform: scale(1.04);
}

.portfolio-card-body {
    padding: 16px 0 0;
}

.portfolio-card-cat {
    display: inline-block;
    margin: 0 0 8px;
    font-size: 13px;
    font-weight: 600;
    line-height: 18px;
    color: var(--c-sub, #c59a31);
    text-decoration: none;
}

.portfolio-card-title {
    display: -webkit-box;
    overflow: hidden;
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    line-height: 26px;
    letter-spacing: -0.01em;
    color: var(--c-n9, #0a0a0a);
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.portfolio-card-meta {
    margin: 8px 0 0;
    font-size: 14px;
    line-height: 20px;
    color: var(--c-n4, #999999);
}

/* 상세 */
.portfolio-detail .portfolio-inner {
    max-width: 960px;
}

.portfolio-detail-header {
    padding: 0 0 24px;
    border-bottom: 1px solid var(--c-n2, #ebebeb);
}

.portfolio-detail-title {
    margin: 0;
    font-size: 32px;
    font-weight: 700;
    line-height: 42px;
    letter-spacing: -0.02em;
    color: var(--c-n9, #0a0a0a);
}

.portfolio-detail-meta {
    margin: 12px 0 0;
    font-size: 15px;
    line-height: 22px;
    color: var(--c-n4, #999999);
}

.portfolio-detail-summary {
    margin: 32px 0 0;
    font-size: 17px;
    line-height: 30px;
    color: var(--c-n7, #333333);
}

.portfolio-detail-body {
    margin: 32px 0 0;
    font-size: 16px;
    line-height: 28px;
    color: var(--c-n7, #333333);
}

.portfolio-detail-body img {
    max-width: 100%;
    height: auto;
}

.portfolio-gallery {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 40px 0 0;
    padding: 0;
    list-style: none;
}

.portfolio-gallery li:first-child {
    grid-column: 1 / -1;
}

.portfolio-gallery-item {
    display: block;
    overflow: hidden;
    width: 100%;
    aspect-ratio: 4 / 3;
    padding: 0;
    border: 0;
    border-radius: 8px;
    background-color: var(--c-bg2, #f6f6f6);
    cursor: zoom-in;
}

.portfolio-gallery li:first-child .portfolio-gallery-item {
    aspect-ratio: 16 / 9;
}

.portfolio-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-lightbox {
    width: 100vw;
    max-width: 100vw;
    height: 100vh;
    max-height: 100vh;
    margin: 0;
    padding: 0;
    border: 0;
    background: rgba(0, 0, 0, 0.92);
}

.portfolio-lightbox[open] {
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-lightbox::backdrop {
    background: rgba(0, 0, 0, 0.6);
}

.portfolio-lightbox img {
    max-width: calc(100vw - 128px);
    max-height: calc(100vh - 96px);
    object-fit: contain;
}

.portfolio-lightbox-nav,
.portfolio-lightbox-close {
    position: absolute;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 0;
    background: none;
    font-size: 40px;
    line-height: 48px;
    color: #fff;
    cursor: pointer;
}

.portfolio-lightbox-nav {
    top: 50%;
    transform: translateY(-50%);
}

.portfolio-lightbox-nav.is-prev {
    left: 16px;
}

.portfolio-lightbox-nav.is-next {
    right: 16px;
}

.portfolio-lightbox-close {
    top: 16px;
    right: 16px;
}

.portfolio-detail-footer {
    display: flex;
    justify-content: center;
    margin: 56px 0 0;
}

.portfolio-back {
    padding: 14px 40px;
    border: 1px solid var(--c-n3, #cccccc);
    border-radius: 4px;
    font-size: 15px;
    line-height: 20px;
    color: var(--c-n7, #333333);
    text-decoration: none;
}

.portfolio-back:hover {
    border-color: var(--c-primary, #001735);
    color: var(--c-primary, #001735);
}

@media (max-width: 1023px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767px) {
    .portfolio-page {
        padding: 48px 0 64px;
    }

    .portfolio-title,
    .portfolio-detail-title {
        font-size: 24px;
        line-height: 32px;
    }

    .portfolio-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 32px;
    }

    .portfolio-gallery {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .portfolio-lightbox img {
        max-width: 100vw;
    }

    .portfolio-lightbox-nav.is-prev {
        left: 0;
    }

    .portfolio-lightbox-nav.is-next {
        right: 0;
    }
}