/*
 * Online Exhibition CSS - 完整修正版 v1.0.4
 * 支援動態列數設定、標題置中、全螢幕彈窗、縮圖尺寸控制、手機版固定按鈕、循環導覽
 */

/* Grid - 支援動態列數 */
.oe-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr); /* 預設 6 列 */
    gap: 16px;
}

/* 動態列數設定 */
.oe-grid[data-columns="1"] { grid-template-columns: repeat(1, 1fr); }
.oe-grid[data-columns="2"] { grid-template-columns: repeat(2, 1fr); }
.oe-grid[data-columns="3"] { grid-template-columns: repeat(3, 1fr); }
.oe-grid[data-columns="4"] { grid-template-columns: repeat(4, 1fr); }
.oe-grid[data-columns="5"] { grid-template-columns: repeat(5, 1fr); }
.oe-grid[data-columns="6"] { grid-template-columns: repeat(6, 1fr); }
.oe-grid[data-columns="7"] { grid-template-columns: repeat(7, 1fr); }
.oe-grid[data-columns="8"] { grid-template-columns: repeat(8, 1fr); }
.oe-grid[data-columns="9"] { grid-template-columns: repeat(9, 1fr); }
.oe-grid[data-columns="10"] { grid-template-columns: repeat(10, 1fr); }
.oe-grid[data-columns="11"] { grid-template-columns: repeat(11, 1fr); }
.oe-grid[data-columns="12"] { grid-template-columns: repeat(12, 1fr); }

/* RWD: 在小螢幕上自動調整列數 */
@media (max-width: 1200px) {
    .oe-grid[data-columns="8"], .oe-grid[data-columns="9"], 
    .oe-grid[data-columns="10"], .oe-grid[data-columns="11"], 
    .oe-grid[data-columns="12"] { 
        grid-template-columns: repeat(6, 1fr); 
    }
}
@media (max-width: 900px) {
    .oe-grid[data-columns="6"], .oe-grid[data-columns="7"], 
    .oe-grid[data-columns="8"], .oe-grid[data-columns="9"], 
    .oe-grid[data-columns="10"], .oe-grid[data-columns="11"], 
    .oe-grid[data-columns="12"] { 
        grid-template-columns: repeat(4, 1fr); 
    }
}
@media (max-width: 600px) {
    .oe-grid { 
        grid-template-columns: repeat(2, 1fr) !important; 
    }
}
@media (max-width: 400px) {
    .oe-grid { 
        grid-template-columns: 1fr !important; 
    }
}

.oe-item {
    display: block;
    text-decoration: none;
    color: inherit;
}
.oe-item img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 6px;
}

/* 等高正方形模式 */
.oe-grid-equal .oe-item {
    display: flex;
    flex-direction: column;
}
.oe-grid-equal .oe-item .oe-img-container {
    width: 100%;
    aspect-ratio: 1 / 1; /* 強制正方形 */
    overflow: hidden;
    border-radius: 6px;
    background: #f5f5f5;
}
.oe-grid-equal .oe-item .oe-img-container img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 裁切至正方形 */
    object-position: center;
    border-radius: 0;
}

.oe-title {
    display: block;
    margin-top: 6px;
    font-size: .9rem;
    text-align: center; /* 標題置中 */
}

/* Modal shell */
.oe-modal {
    position: fixed !important;
    inset: 0 !important;
    background: rgba(0, 0, 0, .6) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 9999 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transition: opacity .5s ease, visibility .5s ease;
    padding: 0 !important;
}
.oe-modal.is-open,
.oe-modal[aria-hidden="false"] {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    overflow: hidden !important;
}

/* 防止背景滾動的 body 樣式 */
body.oe-modal-open {
    overflow: hidden !important;
    position: fixed !important;
    width: 100% !important;
    height: 100% !important;
}

/* Dialog：全螢幕 100vw x 100vh */
.oe-dialog {
    background: #fff !important;
    width: 100vw !important;
    height: 100vh !important;
    max-width: none !important;
    max-height: none !important;
    display: flex !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    position: relative !important;
    transform: translateY(8px) !important;
    opacity: 0 !important;
    transition: transform .5s ease, opacity .5s ease !important;
}
.oe-modal.is-open .oe-dialog,
.oe-modal[aria-hidden="false"] .oe-dialog {
    transform: translateY(0) !important;
    opacity: 1 !important;
}

/* Modal content：设置为 grid 并占满整个 dialog */
.oe-modal-content {
    display: grid !important;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) !important;
    width: 100% !important;
    height: 100% !important;
    opacity: 1 !important;
    transition: opacity .5s ease !important;
}
.oe-modal-content.is-exiting {
    opacity: 0 !important;
}
.oe-modal-content.is-entering {
    opacity: 0 !important;
}

.oe-close {
    position: absolute !important;
    top: 3rem !important;
    right: 2rem !important;
    background: #000 !important;
    color: #fff !important;
    border: 0 !important;
    font-size: 18px !important;
    width: 32px !important;
    height: 32px !important;
    line-height: 32px !important;
    border-radius: 16px !important;
    cursor: pointer !important;
    z-index: 10001 !important;
    padding: unset;
}

/* Columns - 修正圖片顯示問題 */
.oe-left {
    overflow: hidden !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}
.oe-left img {
    max-width: 100% !important;
    max-height: 100% !important;
    width: auto !important;
    height: auto !important;
    object-fit: contain !important;
}
.oe-right {
    padding: 60px 24px !important;
    overflow-y: auto !important;
    position: relative !important;
    display: flex !important;
    flex-direction: column !important;
}
.oe-heading {
    margin: 0 0 8px !important;
    line-height: 1.3 !important;
}

/* Panels */
.oe-panel {
    line-height: 1.7 !important;
    word-wrap: break-word !important;
    overflow-wrap: anywhere !important;
    flex: 1 !important;
    margin-bottom: 16px !important;
}

/* Prev / Next - 固定在右下角 */
.oe-nav {
    display: flex !important;
    gap: 10px !important;
    margin-top: auto !important;
    justify-content: flex-end !important;
}
.oe-nav .oe-prev,
.oe-nav .oe-next {
    border: 1px solid #ddd !important;
    background: #fff !important;
    padding: 6px 10px !important;
    border-radius: 6px !important;
    cursor: pointer !important;
}

/* RWD：600px 以下手機版優化 */
@media (max-width: 600px) {
    .oe-modal {
        padding: 0 !important;
        align-items: stretch !important;
        justify-content: stretch !important;
    }
    
    .oe-dialog {
        width: 100vw !important;
        height: 100vh !important;
        max-width: none !important;
        max-height: none !important;
        margin: 0 !important;
        border-radius: 0 !important;
    }
    
    .oe-modal-content {
        grid-template-columns: 1fr !important;
        width: 100% !important;
        height: 100vh !important;
        overflow: hidden !important;
        display: flex !important;
        flex-direction: column !important;
    }
    
    .oe-left {
        flex: 0 0 50vh !important;
        overflow: hidden !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        background: #f8f8f8 !important;
        padding: 20px !important;
    }
    
    .oe-left img {
        max-width: 100% !important;
        max-height: 100% !important;
        width: auto !important;
        height: auto !important;
        object-fit: contain !important;
    }
    
    .oe-right {
        flex: 1 1 auto !important;
        overflow-y: auto !important;
        padding: 16px !important;
        -webkit-overflow-scrolling: touch !important;
        overscroll-behavior: contain !important;
        position: relative !important;
    }
    
    /* 手機版控制按鈕容器 - sticky 在 oe-right 頂部 */
    .oe-mobile-controls {
        position: sticky !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
        z-index: 10001 !important;
        margin-bottom: 16px !important;
        padding: 10px 0 !important;
        border-radius: 8px !important;
    }
    
    /* 隱藏原本的按鈕位置 */
    .oe-close {
        display: none !important;
    }
    
    .oe-nav {
        display: none !important;
    }
    
    /* 新容器內的導覽按鈕 */
    .oe-mobile-controls .oe-nav {
        display: flex !important;
        gap: 8px !important;
    }
    
    .oe-mobile-controls .oe-nav .oe-prev,
    .oe-mobile-controls .oe-nav .oe-next {
        background: rgba(0, 0, 0, 0.8) !important;
        color: white !important;
        border: 2px solid rgba(255, 255, 255, 0.2) !important;
        border-radius: 16px !important;
        width: 32px !important;
        height: 32px !important;
        padding: 0 !important;
        font-size: 14px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    
    /* 新容器內的關閉按鈕 */
    .oe-mobile-controls .oe-close {
        display: block !important;
        position: static !important;
        background: rgba(0, 0, 0, 0.8) !important;
        backdrop-filter: blur(4px) !important;
        border: 2px solid rgba(255, 255, 255, 0.2) !important;
        width: 32px !important;
        height: 32px !important;
        border-radius: 16px !important;
        font-size: 14px !important;
        line-height: 1 !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .oe-panel{padding-bottom: 100px;}
}

/* Focus & a11y */
.oe-nav .oe-prev:focus-visible,
.oe-nav .oe-next:focus-visible,
.oe-close:focus-visible {
    outline: 2px solid #5B9DD9 !important;
    outline-offset: 2px !important;
    border-radius: 6px !important;
}

/* Hover effects */
.oe-nav .oe-prev:hover,
.oe-nav .oe-next:hover,
.oe-close:hover {
    background-color: #777 !important;
}

/* Dark mode */
.dark-scheme .oe-dialog {
    background-color: #161519 !important;
    color: #e8e8e8 !important;
}
.dark-scheme .oe-close {
    background: #2a2a2a !important;
    color: #fff !important;
}
.dark-scheme .oe-nav .oe-prev,
.dark-scheme .oe-nav .oe-next {
    background: #000 !important;
    color: #e8e8e8 !important;
    border-color: #333 !important;
}
.dark-scheme .oe-panel a {
    color: #9ecbff !important;
}
.dark-scheme .oe-panel {
    color: #ddd !important;
}

/* 深色模式手機版優化 */
@media (max-width: 600px) {
    .dark-scheme .oe-close {
        background: rgba(42, 42, 42, 0.9) !important;
    }
    
    .dark-scheme .oe-nav .oe-prev,
    .dark-scheme .oe-nav .oe-next {
        background: rgba(42, 42, 42, 0.9) !important;
        border-color: rgba(255, 255, 255, 0.2) !important;
    }
    
    .dark-scheme .oe-left {
        background: #1a1a1a !important;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .oe-modal, .oe-dialog, .oe-modal-content {
        transition: none !important;
    }
}

/* 空白狀態 */
.oe-empty {
    text-align: center;
    padding: 40px 20px;
    color: #666;
    font-size: 1.1rem;
}