/* Chainlit UI 增強 - 左側選單改善 */

/* 強制 Live2D 虛擬人在右下角且在最上層 */
#live2d-widget {
    left: auto !important;
    right: 0 !important;
    bottom: 0 !important;
    position: fixed !important;
    z-index: 9999 !important;
    pointer-events: auto !important;
}

/* 確保虛擬人在所有 Chainlit 元素之上 */
/* Sidebar 應該在虛擬人之下 */
[class*="MuiDrawer-root"],
[class*="MuiDrawer-paper"] {
    z-index: 1200 !important;
}

/* Dialog/Modal 也應該在虛擬人之下 */
[class*="MuiDialog-root"],
[class*="MuiModal-root"] {
    z-index: 1300 !important;
}

/* 但要確保虛擬人比所有這些都高 */
#live2d-widget {
    z-index: 9999 !important;
}

/* 為左側邊欄的收合區域添加視覺提示 */
[class*="MuiDrawer"] [class*="resizer"] {
    background: linear-gradient(90deg, transparent, rgba(100, 100, 255, 0.1), transparent) !important;
    transition: background 0.3s ease, width 0.2s ease !important;
    cursor: col-resize !important;
    position: relative !important;
}

/* 滑鼠懸停時的提示效果 */
[class*="MuiDrawer"] [class*="resizer"]:hover {
    background: linear-gradient(90deg, transparent, rgba(100, 100, 255, 0.3), transparent) !important;
    width: 12px !important;
}

/* 為收合區域添加圖示提示 */
[class*="MuiDrawer"] [class*="resizer"]::before {
    content: "⋮⋮";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    color: rgba(100, 100, 255, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    line-height: 1;
    letter-spacing: -2px;
}

[class*="MuiDrawer"] [class*="resizer"]:hover::before {
    opacity: 1;
}

/* 添加工具提示文字 */
[class*="MuiDrawer"] [class*="resizer"]::after {
    content: "拖曳調整 | 雙擊收合";
    position: absolute;
    top: 50%;
    left: 120%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 10000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

[class*="MuiDrawer"] [class*="resizer"]:hover::after {
    opacity: 1;
}

/* 左側邊欄邊緣高亮 */
[class*="MuiDrawer-root"] {
    position: relative;
}

[class*="MuiDrawer-root"]::after {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg,
        transparent 0%,
        rgba(100, 100, 255, 0.2) 20%,
        rgba(100, 100, 255, 0.2) 80%,
        transparent 100%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 1;
}

[class*="MuiDrawer-root"]:hover::after {
    opacity: 1;
}

/* 為收合按鈕（如果存在）添加樣式 */
button[aria-label*="close"],
button[aria-label*="Close"],
button[aria-label*="toggle"] {
    transition: all 0.2s ease !important;
}

button[aria-label*="close"]:hover,
button[aria-label*="Close"]:hover,
button[aria-label*="toggle"]:hover {
    background-color: rgba(100, 100, 255, 0.1) !important;
    transform: scale(1.1) !important;
}

/* 響應式調整 - 移動端 */
@media (max-width: 768px) {
    [class*="MuiDrawer"] [class*="resizer"]::after {
        display: none; /* 移動端隱藏提示文字 */
    }

    [class*="MuiDrawer"] [class*="resizer"]:hover {
        width: 8px !important;
    }
}

/* 暗色主題適配 */
@media (prefers-color-scheme: dark) {
    [class*="MuiDrawer"] [class*="resizer"] {
        background: linear-gradient(90deg, transparent, rgba(120, 120, 255, 0.15), transparent) !important;
    }

    [class*="MuiDrawer"] [class*="resizer"]:hover {
        background: linear-gradient(90deg, transparent, rgba(120, 120, 255, 0.35), transparent) !important;
    }

    [class*="MuiDrawer"] [class*="resizer"]::before {
        color: rgba(150, 150, 255, 0.6);
    }

    [class*="MuiDrawer-root"]::after {
        background: linear-gradient(180deg,
            transparent 0%,
            rgba(120, 120, 255, 0.25) 20%,
            rgba(120, 120, 255, 0.25) 80%,
            transparent 100%
        );
    }
}