/* =========================================================
   PORTFOLIO IMAGE PREVIEW + LIGHTBOX

   - 기존 슬라이드 레이아웃에 영향을 주지 않음
   - hover: fixed preview panel
   - click: fullscreen lightbox
   - data-lightbox="false" 이미지 제외 가능
   ========================================================= */


/* =========================================================
   01. LIGHTBOX TARGET
   ========================================================= */

.portfolio-lightbox-target {
    cursor: zoom-in;
    transition:
        filter 0.18s ease,
        box-shadow 0.18s ease;
}

.portfolio-lightbox-target:hover {
    filter: brightness(0.96);
}

.portfolio-lightbox-target:focus-visible {
    outline: 2px solid #347bd6;
    outline-offset: 3px;
}


/* =========================================================
   02. HOVER PREVIEW
   ========================================================= */

.image-hover-preview {
    position: fixed;
    z-index: 5000;

    width: min(36vw, 520px);
    max-height: min(58vh, 560px);

    display: none;
    flex-direction: column;

    overflow: hidden;

    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 4px;

    background: rgba(17, 24, 39, 0.96);

    box-shadow:
        0 24px 70px rgba(15, 23, 42, 0.28);

    pointer-events: none;
}

.image-hover-preview.is-visible {
    display: flex;
}

.image-hover-preview__image {
    width: 100%;
    min-height: 0;
    max-height: min(50vh, 480px);

    object-fit: contain;

    background: #171a20;
}

.image-hover-preview__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 16px;

    padding: 10px 12px;

    color: rgba(255, 255, 255, 0.82);

    font-size: 10px;
    line-height: 1.35;
}

.image-hover-preview__label {
    min-width: 0;

    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.image-hover-preview__action {
    flex: 0 0 auto;

    color: #8bbcf3;

    font-weight: 700;
    letter-spacing: 0.04em;
}


/* =========================================================
   03. FULLSCREEN LIGHTBOX
   ========================================================= */

.portfolio-lightbox {
    position: fixed;
    inset: 0;
    z-index: 10000;

    display: none;
    align-items: center;
    justify-content: center;

    padding:
        clamp(28px, 4vh, 56px)
        clamp(28px, 4vw, 68px);

    background: rgba(11, 15, 22, 0.90);

    opacity: 0;

    transition: opacity 0.18s ease;
}

.portfolio-lightbox.is-open {
    display: flex;
}

.portfolio-lightbox.is-visible {
    opacity: 1;
}

.portfolio-lightbox__dialog {
    position: relative;

    width: 100%;
    height: 100%;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    gap: 14px;

    outline: none;
}

.portfolio-lightbox__image {
    display: block;

    width: auto;
    height: auto;

    max-width: min(92vw, 1800px);
    max-height: calc(100vh - 128px);

    object-fit: contain;

    background: #171a20;

    box-shadow:
        0 26px 90px rgba(0, 0, 0, 0.40);
}

.portfolio-lightbox__caption {
    max-width: min(86vw, 1200px);

    margin: 0;

    color: rgba(255, 255, 255, 0.78);

    font-size: clamp(11px, 0.82vw, 14px);
    line-height: 1.45;

    text-align: center;
}

.portfolio-lightbox__close {
    position: absolute;
    top: 0;
    right: 0;

    width: 42px;
    height: 42px;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 0;

    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 50%;

    background: rgba(17, 24, 39, 0.72);
    color: #ffffff;

    font: inherit;
    font-size: 24px;
    font-weight: 300;
    line-height: 1;

    cursor: pointer;

    transition:
        background-color 0.18s ease,
        border-color 0.18s ease,
        transform 0.18s ease;
}

.portfolio-lightbox__close:hover {
    border-color: rgba(139, 188, 243, 0.82);
    background: rgba(52, 123, 214, 0.92);
    transform: scale(1.05);
}

.portfolio-lightbox__close:focus-visible {
    outline: 2px solid #8bbcf3;
    outline-offset: 3px;
}


/* =========================================================
   04. LIGHTBOX OPEN STATE
   ========================================================= */

body.lightbox-open {
    overflow: hidden;
}


/* =========================================================
   05. TABLET / MOBILE
   hover preview는 pointer가 정확한 장치에서만 사용
   ========================================================= */

@media (hover: none), (pointer: coarse) {

    .image-hover-preview {
        display: none !important;
    }
}


@media (max-width: 768px) {

    .portfolio-lightbox {
        padding: 20px 16px;
    }

    .portfolio-lightbox__image {
        max-width: 100%;
        max-height: calc(100vh - 104px);
    }

    .portfolio-lightbox__caption {
        max-width: 100%;
        font-size: 11px;
    }

    .portfolio-lightbox__close {
        top: 2px;
        right: 2px;

        width: 38px;
        height: 38px;

        font-size: 21px;
    }
}


/* =========================================================
   06. REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {

    .portfolio-lightbox-target,
    .portfolio-lightbox,
    .portfolio-lightbox__close {
        transition: none;
    }
}