/* HERO */
.page-hero {
    position: relative;
    height: 380px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    margin-top: 30px;
}

    .page-hero::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 120px;
        height: 4px;
        background: var(--green);
        z-index: 3;
    }

.page-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: brightness(.5);
}
    .page-hero-bg img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
.page-hero-grad {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(17,17,17,.8) 0%, rgba(17,17,17,.3) 60%, transparent 100%);
}

.page-hero-content {
    position: relative;
    z-index: 2;
    padding: 0 48px 48px;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.eyebrow-line {
    width: 32px;
    height: 2px;
    background: var(--green);
}

.eyebrow-label {
    font-family: 'Barlow', sans-serif;
    font-size: 11px;
    letter-spacing: .25em;
    text-transform: uppercase;
    color: var(--green);
}

.page-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 900;
    font-size: clamp(40px, 6vw, 72px);
    line-height: .95;
    text-transform: uppercase;
}

/* BREADCRUMB */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--gray);
    padding: 18px 48px;
    border-bottom: 1px solid rgba(255,255,255,.05);
}

    .breadcrumb a {
        color: var(--gray);
        text-decoration: none;
    }

        .breadcrumb a:hover {
            color: #fff;
        }

    .breadcrumb span {
        color: rgba(255,255,255,.25);
    }

/* TAB NAV */
.tab-nav {
    background: var(--dark);
    border-bottom: 1px solid rgba(255,255,255,.06);
    padding: 0 48px;
    display: flex;
    gap: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

    .tab-nav::-webkit-scrollbar {
        display: none;
    }

.tab-btn {
    font-family: 'Noto Sans TC', sans-serif;
    font-size: 14px;
    color: rgba(255,255,255,.55);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 18px 28px;
    cursor: pointer;
    white-space: nowrap;
    transition: color .2s, border-color .2s;
    margin-bottom: -1px;
}

    .tab-btn:hover {
        color: #fff;
    }

    .tab-btn.active {
        color: #fff;
        border-bottom-color: var(--green);
    }

/* FILTER BAR */
.filter-bar {
    padding: 28px 48px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.filter-count {
    font-size: 13px;
    color: var(--gray);
}

    .filter-count strong {
        color: var(--green);
    }

/* GRID */
.portfolio-wrap {
    padding: 32px 48px 80px;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    background: var(--dark);
    aspect-ratio: 1;
    opacity: 0;
    transform: translateY(16px);
}

    .portfolio-item.wide {
        grid-column: span 2;
    }

    .portfolio-item.tall {
        grid-row: span 2;
    }

.portfolio-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .5s cubic-bezier(.16,1,.3,1), filter .3s;
    filter: brightness(.85) grayscale(10%);
}

.portfolio-item:hover .portfolio-thumb {
    transform: scale(1.06);
    filter: brightness(1) grayscale(0%);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,.8) 0%, rgba(0,0,0,.2) 50%, transparent 100%);
    opacity: 0;
    transition: opacity .3s;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px;
}

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

.portfolio-cat {
    font-family: 'Barlow', sans-serif;
    font-size: 10px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--green);
    margin-bottom: 5px;
}

.portfolio-name {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 17px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: #fff;
    line-height: 1.2;
}

.portfolio-zoom {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    background: rgba(109,184,42,.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity .3s;
}

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

/* VIEWER MODAL */
.viewer {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.95);
    z-index: 1000;
    flex-direction: column;
}

    .viewer.open {
        display: flex;
    }

.viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    flex-shrink: 0;
}

.viewer-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.viewer-cat {
    font-family: 'Barlow', sans-serif;
    font-size: 11px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--green);
}

.viewer-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 20px;
    font-weight: 700;
    text-transform: uppercase;
    color: #fff;
}

.viewer-close {
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid rgba(255,255,255,.2);
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color .2s, background .2s;
}

    .viewer-close:hover {
        border-color: var(--red);
        background: rgba(200,23,26,.15);
    }

.viewer-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    min-height: 0;
}

.viewer-big {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    transition: opacity .3s;
}

.viewer-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(0,0,0,.5);
    border: 1px solid rgba(255,255,255,.15);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .2s, border-color .2s;
    font-size: 22px;
}

    .viewer-arrow:hover {
        background: var(--green);
        border-color: var(--green);
    }

    .viewer-arrow.left {
        left: 16px;
    }

    .viewer-arrow.right {
        right: 16px;
    }

.viewer-counter {
    position: absolute;
    bottom: 12px;
    right: 16px;
    font-size: 12px;
    color: rgba(255,255,255,.45);
    font-family: 'Barlow', sans-serif;
}

.viewer-thumbs {
    flex-shrink: 0;
    padding: 12px 16px;
    border-top: 1px solid rgba(255,255,255,.08);
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scroll-behavior: smooth;
}

    .viewer-thumbs::-webkit-scrollbar {
        height: 4px;
    }

    .viewer-thumbs::-webkit-scrollbar-track {
        background: rgba(255,255,255,.05);
    }

    .viewer-thumbs::-webkit-scrollbar-thumb {
        background: var(--green);
        border-radius: 2px;
    }

.viewer-thumb {
    flex-shrink: 0;
    width: 72px;
    height: 52px;
    object-fit: cover;
    cursor: pointer;
    opacity: .45;
    border: 2px solid transparent;
    transition: opacity .2s, border-color .2s;
}

    .viewer-thumb.active {
        opacity: 1;
        border-color: var(--green);
    }

    .viewer-thumb:hover {
        opacity: .8;
    }

/* EMPTY */
.grid-empty {
    padding: 80px 0;
    text-align: center;
    color: var(--gray);
    font-size: 14px;
    display: none;
}

/* CTA */
.cta-bar {
    background: var(--green);
    padding: 56px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}

.cta-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    font-size: clamp(24px, 3vw, 40px);
    text-transform: uppercase;
    line-height: 1.1;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    color: var(--green);
    padding: 14px 32px;
    font-family: 'Barlow', sans-serif;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
    transition: transform .2s;
}

    .btn-white:hover {
        transform: translateY(-2px);
    }

/* RESPONSIVE */
@media(max-width:1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media(max-width:768px) {
    .page-hero {
        height: 260px;
    }

    .page-hero-content {
        padding: 0 24px 32px;
    }

    .breadcrumb {
        padding: 14px 24px;
    }

    .tab-nav {
        padding: 0 4px;
    }

    .tab-btn {
        padding: 14px 12px;
        font-size: 12px;
    }

    .filter-bar {
        padding-left: 24px;
        padding-right: 24px;
    }

    .portfolio-wrap {
        padding: 24px 16px 60px;
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-item.wide {
        grid-column: span 1;
    }

    .cta-bar {
        padding: 40px 24px;
    }
}