/* 详情页样式 */

.back-btn {
    position: fixed;
    top: 80px;
    left: 32px;
    z-index: 90;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border: 1px solid var(--c-gray-300);
    color: var(--c-gray-700);
    padding: 8px 16px;
    border-radius: 2px;
    cursor: pointer;
    font-size: 13px;
    letter-spacing: 0.15em;
    transition: all .25s;
    font-family: var(--font-serif);
}

.back-btn:hover {
    border-color: var(--c-zhu);
    color: var(--c-zhu);
}

.artwork-detail {
    padding: 110px 0 80px;
    background: var(--c-paper);
    min-height: 100vh;
}

.artwork-main {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
    margin-bottom: 80px;
}

/* 横幅：seal+desc 跨两列全宽，只缩小 seal 上下方行间距 */
.artwork-main.layout-banner {
    column-gap: 60px;
    row-gap: 28px;
}
.artwork-main.layout-banner .artwork-seal {
    grid-column: 1 / -1;
    margin-top: 0;
    margin-bottom: 0;
}
.artwork-main.layout-banner .artwork-desc {
    grid-column: 1 / -1;
    margin-top: 0;
}

.artwork-image {
    background: var(--c-white);
    padding: 24px;
    border-radius: 2px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
    cursor: zoom-in;
    position: relative;
}

.artwork-image img {
    width: 100%;
    height: auto;
    display: block;
}

.artwork-image-hint {
    text-align: center;
    margin-top: 12px;
    color: var(--c-gray-500);
    font-size: 12px;
    letter-spacing: 0.2em;
}

.artwork-info {
    padding-top: 20px;
}

.artwork-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--c-black);
    margin-bottom: 16px;
    line-height: 1.4;
}

.artwork-meta {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(184, 138, 74, 0.2);
}

.artwork-meta .meta-item {
    font-size: 13px;
    color: var(--c-gray-500);
    letter-spacing: 0.1em;
}

.artwork-inspiration {
    margin-bottom: 32px;
    padding: 20px;
    background: var(--c-bg);
    border-left: 3px solid var(--c-zhu);
    border-radius: 2px;
}

.insp-label {
    display: block;
    font-size: 12px;
    color: var(--c-zhu);
    letter-spacing: 0.3em;
    margin-bottom: 12px;
}

.artwork-inspiration p {
    font-style: italic;
    color: var(--c-gray-700);
    line-height: 1.95;
    font-size: 14px;
}

.artwork-seal {
    position: relative;
    margin-bottom: 24px;
}

.seal-text {
    writing-mode: vertical-rl;
    font-size: 20px;
    letter-spacing: 0.4em;
    color: var(--c-black);
    line-height: 1.6;
    max-height: 6em;
}

.seal-mark {
    display: inline-block;
    width: auto;
    padding: 4px 12px;
    background: #c8362f;
    color: var(--c-white);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.15em;
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(200, 54, 47, 0.25);
}

.artwork-desc {
    padding: 20px;
    background: var(--c-bg);
    border-left: 3px solid var(--c-zhu);
    border-radius: 2px;
    color: var(--c-gray-700);
    line-height: 1.95;
    font-size: 14px;
}

.artwork-desc p { margin-bottom: 12px; }

/* 灯箱 */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.lightbox.open {
    display: flex;
}

.lightbox img {
    cursor: zoom-out;
    transition: transform .3s;
}

/* 横幅：100% 宽度，高度自动，垂直居中 */
.lightbox.lb-banner img {
    width: 100%;
    height: auto;
    max-height: 100vh;
}

/* 竖幅：100% 高度，宽度自动，垂直居中 */
.lightbox.lb-scroll img {
    height: 100%;
    width: auto;
    max-width: 100vw;
}

.lightbox.zoomed img {
    transform: scale(2);
    cursor: zoom-out;
}

.lb-close {
    position: absolute;
    background: #333;
    border: none;
    color: #fff;
    cursor: pointer;
    font-size: 24px;
    opacity: 0.7;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity .25s;
}
.lb-close:hover { opacity: 0.9; }

/* 左右切换：正方形，深灰底白字，70% → hover 90%，禁用灰色 */
.lb-prev, .lb-next {
    position: absolute;
    background: #333;
    color: #fff;
    border: none;
    opacity: 0.7;
    cursor: pointer;
    font-size: 24px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity .25s;
}
.lb-prev:hover, .lb-next:hover {
    opacity: 0.9;
}
.lb-prev:disabled, .lb-next:disabled {
    background: #555;
    opacity: 0.35;
    cursor: default;
}

.lb-close { top: 24px; right: 24px; }
.lb-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 24px; top: 50%; transform: translateY(-50%); }

/* 评论 */
.comment-section {
    background: var(--c-white);
    border-radius: 8px;
    padding: 48px;
    margin-bottom: 60px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.comment-intro {
    text-align: center;
    color: var(--c-gray-500);
    font-size: 13px;
    line-height: 2;
    letter-spacing: 0.1em;
    margin-bottom: 36px;
    font-style: italic;
}

.comment-title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-align: center;
    margin-bottom: 36px;
    color: var(--c-black);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}
.comment-title::before,
.comment-title::after {
    content: "";
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(184,138,74,0.3), transparent);
    max-width: 80px;
}
.comment-title::before { background: linear-gradient(to left, rgba(184,138,74,0.3), transparent); }
.comment-title::after { background: linear-gradient(to right, rgba(184,138,74,0.3), transparent); }

.comment-list {
    margin-bottom: 48px;
}

.comment-item {
    padding: 24px;
    margin-bottom: 16px;
    background: var(--c-bg);
    border-radius: 6px;
    border-left: 3px solid rgba(184, 138, 74, 0.15);
    transition: border-color .25s;
}
.comment-item:hover { border-left-color: var(--c-zhu); }
.comment-item:last-child { margin-bottom: 0; }

.comment-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.comment-author {
    color: var(--c-black);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.comment-author::before {
    content: "";
    display: inline-block;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: url("/static/front/images/user.png") center/cover no-repeat, linear-gradient(135deg, var(--c-zhu), var(--c-light-zhu));
    flex-shrink: 0;
}

.ai-badge {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(184, 138, 74, 0.08);
    color: var(--c-zhu);
    border: 1px solid rgba(184, 138, 74, 0.25);
    border-radius: 20px;
    font-size: 11px;
    letter-spacing: 0.1em;
}

.comment-time {
    color: var(--c-gray-500);
    font-size: 12px;
    letter-spacing: 0.05em;
}

.comment-content {
    color: var(--c-gray-700);
    line-height: 1.9;
    font-size: 14px;
    padding-left: 36px;
}

.comment-empty {
    text-align: center;
    color: var(--c-gray-500);
    padding: 48px 0;
    font-size: 14px;
    letter-spacing: 0.15em;
}

.comment-form {
    border-top: 1px solid rgba(184, 138, 74, 0.15);
    padding-top: 32px;
}
.comment-form .form-row { margin-bottom: 16px; }
.comment-form input,
.comment-form textarea {
    width: 100%;
    border: 1px solid var(--c-gray-300);
    border-radius: 4px;
    padding: 12px 16px;
    font-size: 14px;
    font-family: var(--font-serif);
    background: var(--c-bg);
    color: var(--c-black);
    transition: border-color .25s, box-shadow .25s;
}
.comment-form textarea { min-height: 110px; resize: vertical; }
.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: var(--c-zhu);
    box-shadow: 0 0 0 3px rgba(184, 138, 74, 0.08);
}

/* 相关作品 */
.related-section {
    margin-bottom: 60px;
}

.related-title {
    text-align: center;
    font-size: 18px;
    letter-spacing: 0.3em;
    margin-bottom: 32px;
    color: var(--c-black);
}

.related-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.related-item {
    display: block;
    background: var(--c-white);
    border-radius: 2px;
    overflow: hidden;
    transition: transform .3s, box-shadow .3s;
}

.related-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    color: inherit;
}

.related-img {
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: var(--c-gray-100);
}

.related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s;
}

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

.related-name {
    display: block;
    text-align: center;
    padding: 12px;
    font-size: 13px;
    color: var(--c-gray-700);
    letter-spacing: 0.1em;
}

/* 邻作导航 */
.artwork-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.pager-item {
    padding: 16px 24px;
    background: var(--c-white);
    border-radius: 2px;
    transition: all .3s;
    color: var(--c-gray-700);
}

.pager-item:hover {
    background: var(--c-zhu);
    color: var(--c-white);
}

.pager-item.next {
    text-align: right;
}

.pager-label {
    display: block;
    font-size: 12px;
    color: var(--c-zhu);
    letter-spacing: 0.2em;
    margin-bottom: 6px;
}

.pager-item:hover .pager-label {
    color: var(--c-white);
}

.pager-title {
    font-size: 16px;
    letter-spacing: 0.1em;
}

/* 平板/小屏：图片下方出现空白时，右侧栏转到图片下方 */
@media (max-width: 1024px) {
    .artwork-main {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .artwork-main.layout-banner .artwork-seal,
    .artwork-main.layout-banner .artwork-desc {
        grid-column: auto;
    }
}

@media (max-width: 768px) {
    .back-btn { left: 16px; top: 80px; }
    .artwork-main { grid-template-columns: 1fr; gap: 30px; }
    .artwork-title { font-size: 22px; }
    .comment-section { padding: 20px; }
    .related-list { grid-template-columns: repeat(2, 1fr); }
}