/**
 * 学员作品 - 分类筛选 + 灯箱效果
 * 风格：深蓝(#0a1628) + 金色(#D4AF37) 高端科技风
 */

/* ========== 分类筛选栏 ========== */
.zxs-filter-bar {
    background: #fff;
    padding: 50px 20px;
    text-align: center;
}

.zxs-filter-bar .filter-tags {
    display: inline-flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.zxs-filter-bar .filter-tag {
    padding: 8px 24px;
    background: #f0f2f5;
    color: #555;
    border-radius: 50px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    border: 1px solid transparent;
}

.zxs-filter-bar .filter-tag:hover {
    background: #e8eaed;
    color: #333;
    transform: translateY(-1px);
}

.zxs-filter-bar .filter-tag.is-active {
    background: linear-gradient(135deg, #D4AF37, #c9a227);
    color: #0a1628;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
    transform: translateY(-1px);
}

/* ========== 作品卡片筛选动效 ========== */
.zxs-gallery-item {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.zxs-gallery-item.filter-hidden {
    opacity: 0;
    transform: scale(0.85);
    pointer-events: none;
    position: absolute;
    visibility: hidden;
    width: 0;
    height: 0;
    overflow: hidden;
}

.zxs-gallery-item .zxs-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.zxs-gallery-item .zxs-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(10, 22, 40, 0.15);
}

/* ========== 灯箱（Lightbox） ========== */
.zxs-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.zxs-lightbox.is-open {
    opacity: 1;
    visibility: visible;
}

.zxs-lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: zxsLightboxZoomIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes zxsLightboxZoomIn {
    from {
        opacity: 0;
        transform: scale(0.85);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 灯箱预览图 - 大尺寸作品卡 */
.zxs-lightbox-preview {
    background: linear-gradient(135deg, #0a1628, #1a2d4d);
    border-radius: 16px;
    width: 100%;
    max-width: 700px;
    aspect-ratio: 16/10;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5), 0 0 60px rgba(212, 175, 55, 0.15);
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.zxs-lightbox-preview .lb-emoji {
    font-size: 140px;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 4px 20px rgba(212, 175, 55, 0.3));
    animation: zxsLightboxFloat 3s ease-in-out infinite;
}

@keyframes zxsLightboxFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.zxs-lightbox-preview .lb-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(212, 175, 55, 0.25), transparent 60%);
    z-index: 1;
}

.zxs-lightbox-preview .lb-glow::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 70%, rgba(212, 175, 55, 0.15), transparent 50%);
}

.zxs-lightbox-preview .lb-category {
    position: absolute;
    top: 20px;
    left: 20px;
    background: linear-gradient(135deg, #D4AF37, #c9a227);
    color: #0a1628;
    padding: 6px 18px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    z-index: 3;
}

/* 科技光效边框 */
.zxs-lightbox-preview::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 18px;
    background: linear-gradient(135deg, #D4AF37, transparent 40%, transparent 60%, #D4AF37);
    z-index: 0;
    opacity: 0.5;
    animation: zxsLightboxBorderSpin 4s linear infinite;
}

@keyframes zxsLightboxBorderSpin {
    0% { opacity: 0.3; }
    50% { opacity: 0.6; }
    100% { opacity: 0.3; }
}

/* 灯箱信息区 */
.zxs-lightbox-info {
    background: #fff;
    border-radius: 0 0 16px 16px;
    padding: 24px 28px;
    width: 100%;
    max-width: 700px;
    box-sizing: border-box;
    margin-top: -2px;
}

.zxs-lightbox-info .lb-title {
    font-size: 22px;
    color: #0a1628;
    margin: 0 0 8px 0;
    font-weight: 700;
}

.zxs-lightbox-info .lb-author {
    color: #D4AF37;
    font-size: 14px;
    margin-bottom: 12px;
    font-weight: 500;
}

.zxs-lightbox-info .lb-desc {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    margin: 0;
}

/* 灯箱 - 关闭按钮 */
.zxs-lightbox-close {
    position: absolute;
    top: -16px;
    right: -16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #D4AF37, #c9a227);
    color: #0a1628;
    font-size: 22px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
    transition: transform 0.2s ease;
    line-height: 1;
}

.zxs-lightbox-close:hover {
    transform: rotate(90deg) scale(1.1);
}

/* 灯箱 - 左右切换按钮 */
.zxs-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.4);
    color: #D4AF37;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 5;
}

.zxs-lightbox-nav:hover {
    background: rgba(212, 175, 55, 0.2);
    border-color: #D4AF37;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.zxs-lightbox-nav.prev {
    left: -80px;
}

.zxs-lightbox-nav.next {
    right: -80px;
}

/* 灯箱计数器 */
.zxs-lightbox-counter {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    letter-spacing: 1px;
}

.zxs-lightbox-counter .current {
    color: #D4AF37;
    font-weight: 600;
}

/* ========== 移动端适配 ========== */
@media (max-width: 768px) {
    .zxs-filter-bar {
        padding: 30px 15px;
    }

    .zxs-filter-bar .filter-tag {
        padding: 6px 18px;
        font-size: 13px;
    }

    .zxs-lightbox-preview {
        max-width: 90vw;
        border-radius: 12px;
    }

    .zxs-lightbox-preview .lb-emoji {
        font-size: 80px;
    }

    .zxs-lightbox-preview .lb-category {
        top: 12px;
        left: 12px;
        padding: 4px 14px;
        font-size: 12px;
    }

    .zxs-lightbox-info {
        max-width: 90vw;
        padding: 18px 20px;
        border-radius: 0 0 12px 12px;
    }

    .zxs-lightbox-info .lb-title {
        font-size: 18px;
    }

    .zxs-lightbox-info .lb-desc {
        font-size: 14px;
    }

    .zxs-lightbox-close {
        top: 10px;
        right: 10px;
        width: 38px;
        height: 38px;
        font-size: 18px;
    }

    .zxs-lightbox-nav {
        width: 42px;
        height: 42px;
        font-size: 18px;
    }

    .zxs-lightbox-nav.prev {
        left: 10px;
    }

    .zxs-lightbox-nav.next {
        right: 10px;
    }

    .zxs-lightbox-counter {
        bottom: -32px;
        font-size: 12px;
    }
}