/* src/css/panels.css - 核心工作区面板样式 */

/* --- 文件树 --- */
.file-tree-container { flex-grow: 1; overflow: auto; padding: 5px; }
.file-tree { list-style: none; padding: 0; margin: 0; }
.file-tree li {
    /* padding: 5px 8px; (Padding is moved to the node-label) */
    cursor: pointer;
    user-select: none;
    /* ========================= 修改 START ========================= */
    /* Use column flexbox to stack the label and the children list */
    display: flex;
    flex-direction: column;
    align-items: stretch;
    /* ========================= 修改 END =========================== */
    white-space: nowrap;
    /* border-radius: 4px; (Radius moved to the node-label) */
    /* border: 1px solid transparent; (Border moved to the node-label) */
}
/* ========================= 修改 START ========================= */
/* New wrapper for the icon and name, this is what gets highlighted */
.node-label {
    display: flex;
    align-items: center;
    padding: 5px 8px;
    border-radius: 4px;
    border: 1px solid transparent;
}
.file-tree li.focused > .node-label {
    background-color: var(--selection-color);
    color: var(--text-primary);
    border: 1px solid var(--accent-color);
}
/* li.folder styles are no longer needed as the layout is handled by flex-direction: column */
/* li.folder { flex-wrap: wrap; align-items: flex-start; } */

.file-tree li.folder > .node-label > span {
    position: relative;
    padding-left: 20px;
    flex-grow: 1;
    min-width: 0;
}
.file-tree li.folder > .node-label > span::before {
    font-family: "Font Awesome 6 Free";
    content: "\f0da";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.2s ease-in-out;
}
.file-tree li.folder.expanded > .node-label > span::before { transform: translateY(-50%) rotate(90deg); }
.file-tree li.folder > ul { width: 100%; display: none; margin-left: 15px; }
.file-tree li.folder.expanded > ul { display: block; }

.file-tree .node-label i {
    margin-right: 8px;
    width: 14px;
    text-align: center;
}
.file-tree li.folder > .node-label > i { color: var(--accent-color); }

.file-tree li.drag-hover-target > .node-label {
    background-color: var(--selection-color);
    outline: 1px solid var(--accent-color);
    border-radius: 2px;
}
/* ========================= 修改 END =========================== */

/* --- 编辑器标签页 --- */
#center-panel { display: flex; flex-direction: column; }
.editor-tab-bar {
    height: var(--panel-header-height);
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: flex-end;
    flex-shrink: 0;
    padding-left: 5px;
    user-select: none;
}
.editor-tab {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    padding: 6px 12px;
    margin-left: 3px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
    position: relative;
    top: 1px;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}
.editor-tab:hover { background-color: var(--border-color); color: var(--text-primary); }
.editor-tab.active {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-bottom-color: var(--bg-primary);
    font-weight: bold;
}
.editor-tab .close-tab-btn { margin-left: 5px; cursor: pointer; border-radius: 50%; padding: 2px; }
.editor-tab .close-tab-btn:hover { background-color: var(--border-color); }
.editor-tab .unsaved-indicator { color: var(--color-warning); display: none; }
.editor-tab.modified .unsaved-indicator { display: inline; }

/* --- 媒体预览样式 --- */
#media-preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-panel);
    padding: 20px;
    overflow: auto;
}
#media-preview-container .media-preview {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 4px 15px var(--shadow-color);
}

/* --- 底部面板 (标签栏) --- */
.panel-tab-bar {
    height: var(--panel-header-height);
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 5px;
    flex-shrink: 0;
    user-select: none;
}
.panel-tab {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.9rem;
}
.panel-tab:hover { background-color: var(--border-color); color: var(--text-primary); }
.panel-tab.active { color: var(--accent-color); font-weight: bold; border-bottom: 2px solid var(--accent-color); }

/* --- 问题列表 --- */
#problems-list ul { list-style: none; padding: 0; margin: 0; }
#problems-list li { padding: 8px 10px; border-bottom: 1px solid var(--border-color); cursor: pointer; display: flex; align-items: center; gap: 8px; }
#problems-list li:hover { background-color: var(--border-color); }
#problems-list li.error { color: var(--color-error); }
#problems-list li.warning { color: var(--color-warning); }
#problems-list li.info { color: var(--color-info); }
#problems-list li i { width: 16px; text-align: center; }
#problems-list .problem-file-header { background-color: var(--bg-header); font-size: 0.9em; padding: 6px 10px; border-bottom: 1px solid var(--border-color); cursor: default; display: flex; justify-content: space-between; align-items: center; }
#problems-list .problem-file-header:hover { background-color: var(--bg-header); }
#problems-list .problem-file-header .problem-count { color: var(--text-secondary); font-size: 0.9em; }
#problems-list .problem-item { padding-left: 20px; }
#problems-list .problem-item .problem-location { color: var(--text-secondary); margin-left: auto; font-family: var(--font-family-mono); font-size: 0.9em; }