/* ============================================
   思维导图构建器页面样式
   ============================================ */

/* 登录提示条 */
.mindmap-login-hint {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #fffbe6;
    border: 1.5px solid #ffe58f;
    border-radius: var(--radius-md);
    padding: 9px 16px;
    font-size: 12.5px;
    color: #92400e;
    margin-bottom: var(--spacing-md);
}

.mindmap-login-hint i {
    font-size: 15px;
    color: #d97706;
    flex-shrink: 0;
}

.mindmap-login-hint a {
    color: #d97706;
    font-weight: 600;
    text-decoration: underline;
}

.mindmap-login-hint a:hover { color: #b45309; }

/* 主体工作区 */
.mindmap-workspace {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: var(--spacing-lg);
    min-height: 600px;
    margin-bottom: var(--spacing-2xl);
    align-items: start;
}

/* ─── 左侧分组侧边菜单 ─── */
.ai-sidemenu {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 12px 8px;
    position: sticky;
    top: 80px;
}

.sidemenu-group {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.sidemenu-group-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 10px;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background 0.15s;
    user-select: none;
}

.sidemenu-group-header:hover {
    background: var(--bg-muted, #f3f4f6);
}

.sidemenu-group-icon {
    font-size: 1rem;
    flex-shrink: 0;
    line-height: 1;
}

.sidemenu-group-title {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}

.sidemenu-arrow {
    font-size: 1rem;
    color: var(--text-muted);
    transition: transform 0.2s;
    flex-shrink: 0;
}

.sidemenu-group.collapsed .sidemenu-arrow {
    transform: rotate(-90deg);
}

.sidemenu-items {
    list-style: none;
    margin: 0;
    padding: 2px 0 6px 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidemenu-group.collapsed .sidemenu-items {
    display: none;
}

.sidemenu-group--flat .sidemenu-group-header {
    cursor: pointer;
}

.sidemenu-group--flat:hover .sidemenu-group-header {
    background: rgba(99, 102, 241, 0.06);
}

.sidemenu-group--flat.active .sidemenu-group-header {
    background: rgba(99, 102, 241, 0.1);
}

.sidemenu-group--flat.active .sidemenu-group-title {
    color: var(--primary-color);
    font-weight: 700;
}

.sidemenu-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px 6px 14px;
    font-size: 0.84rem;
    color: var(--text-muted);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidemenu-item-icon {
    font-size: 0.95rem;
    flex-shrink: 0;
    opacity: 0.7;
}

.sidemenu-item:hover .sidemenu-item-icon,
.sidemenu-item.active .sidemenu-item-icon {
    opacity: 1;
}

.sidemenu-item:hover {
    background: rgba(99, 102, 241, 0.06);
    color: var(--primary-color);
}

.sidemenu-item.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

/* ─── 右侧内容区 ─── */
.mindmap-content-area {
    min-width: 0;
}

.tool-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* 上半区：左侧控制 + 导图（右） */
.tool-panel-top {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--spacing-lg);
    min-height: 480px;
    align-items: start;
}

.tool-panel-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* AI 自定义生成区 */
.ai-generate-section .ai-gen-body {
    display: flex;
    gap: 8px;
    align-items: center;
}

.ai-gen-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.ai-topic-input {
    flex: 1;
    height: 34px;
    padding: 0 10px;
    font-size: 0.82rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-muted, #f9fafb);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.15s;
}

.ai-topic-input:focus {
    border-color: var(--primary-color);
    background: var(--bg-card);
}

.btn-ai-generate {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0 14px;
    height: 34px;
    font-size: 0.82rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    cursor: pointer;
    white-space: nowrap;
    transition: opacity 0.15s;
    flex-shrink: 0;
}

.btn-ai-generate:hover { opacity: 0.88; }
.btn-ai-generate:disabled { opacity: 0.55; cursor: not-allowed; }

.ai-gen-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 4px 0 0 0;
}

/* 锁定提示区 */
.ai-generate-locked {
    padding: 12px var(--spacing-md) !important;
}

.ai-locked-inner {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.ai-locked-inner i {
    font-size: 1rem;
    color: #f59e0b;
}

/* 下方通栏：选择模块 */
.tool-panel-bottom {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md) var(--spacing-lg);
}

.branch-bar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.branch-bar-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.branch-bar-title i {
    color: var(--primary-color);
    font-size: 1rem;
}

.branch-bar-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    flex: 1;
}

.branch-bar-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

/* 模块勾选列表 — 横向排列 */
.branch-list-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

#tool-placeholder.tool-panel {
    grid-template-columns: 1fr;
}

/* ─── 敬请期待占位 ─── */
.tool-coming-soon {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    min-height: 400px;
    padding: var(--spacing-2xl);
}

.coming-soon-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
}

.coming-soon-icon i {
    font-size: 2rem;
    color: var(--primary-color);
    opacity: 0.6;
}

.coming-soon-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.coming-soon-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

.coming-soon-badge {
    display: inline-block;
    padding: 4px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    letter-spacing: 0.05em;
}

/* ─── 动态面板加载状态 ─── */
.tool-loading {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-muted);
    min-height: 300px;
}

@keyframes ri-spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.ri-spin {
    display: inline-block;
    animation: ri-spin 0.8s linear infinite;
}

/* 左侧控制面板（思维导图工具内部） */
.mindmap-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.panel-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
}

.panel-section-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.panel-section-title i {
    font-size: 1.1rem;
    color: var(--primary-color);
}

.panel-section-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

/* 场景卡片 */
.scene-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.scene-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 10px 12px;
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.scene-card:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.04);
}

.scene-card.active {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.08);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.scene-card-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.scene-card-icon--purple { background: rgba(139, 92, 246, 0.12); color: #8b5cf6; }
.scene-card-icon--orange { background: rgba(249, 115, 22, 0.12); color: #f97316; }
.scene-card-icon--blue   { background: rgba(59, 130, 246, 0.12); color: #3b82f6; }
.scene-card-icon--green  { background: rgba(16, 185, 129, 0.12); color: #10b981; }
.scene-card-icon--teal   { background: rgba(20, 184, 166, 0.12); color: #14b8a6; }

.scene-card-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.scene-card-name {
    font-size: 0.82rem;
    font-weight: 400;
    color: var(--text-primary);
}

.scene-card-meta {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* 分支勾选列表 */
.branch-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.branch-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 10px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.15s;
}

.branch-item:hover {
    background: rgba(99, 102, 241, 0.04);
}

.branch-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.branch-item-label {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
}

.branch-item-count {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-left: auto;
    background: var(--bg-muted, #f3f4f6);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

/* 横向模块 Tag */
.branch-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1.5px solid var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--text-secondary);
    background: var(--bg-card);
    transition: all 0.15s;
    user-select: none;
}

.branch-tag input[type="checkbox"] {
    display: none;
}

.branch-tag:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.04);
}

.branch-tag.active {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.branch-tag-name {
    white-space: nowrap;
}

.branch-tag-count {
    font-size: 0.72rem;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.06);
    padding: 1px 5px;
    border-radius: 10px;
}

.branch-tag.active .branch-tag-count {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
}

/* 操作按钮 */
.panel-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-xs);
}

.btn-mindmap-action {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 7px 12px;
    font-size: 0.78rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-mindmap-action:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.04);
}

.btn-mindmap-action i {
    font-size: 0.9rem;
}

/* 右侧导图区域 */
.mindmap-canvas-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    position: relative;
    min-height: 500px;
    overflow: hidden;
}

/* 空状态 */
.mindmap-empty {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    color: var(--text-muted);
}

.mindmap-empty i {
    font-size: 3.5rem;
    opacity: 0.3;
}

.mindmap-empty p {
    font-size: 0.9rem;
}

/* SVG 画布 */
.mindmap-svg {
    width: 100%;
    height: 100%;
    min-height: 500px;
    cursor: grab;
}

.mindmap-svg:active {
    cursor: grabbing;
}

/* ─── 编辑内容按钮 ─── */
.btn-edit-content {
    border-color: var(--primary-color) !important;
    color: var(--primary-color) !important;
}

.btn-edit-content:hover {
    background: rgba(99, 102, 241, 0.08) !important;
}

/* ─── 内容编辑模态框 ─── */
.edit-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.edit-modal-overlay.open {
    display: flex;
}

.edit-modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    width: min(720px, 92vw);
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 40px rgba(0,0,0,0.18);
}

.edit-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.edit-modal-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.edit-modal-title i { color: var(--primary-color); }

.edit-modal-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: color 0.15s;
}

.edit-modal-close:hover { color: var(--text-primary); }

.edit-modal-body {
    overflow-y: auto;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex: 1;
}

.edit-block {
    background: var(--bg-muted, #f9fafb);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 12px 14px;
}

.edit-block-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.edit-block-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

.edit-ai-title {
    flex: 1;
    height: 32px;
    padding: 0 8px;
    font-size: 0.92rem;
    font-weight: 700;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    outline: none;
}

.edit-branch-name {
    flex: 1;
    height: 30px;
    padding: 0 8px;
    font-size: 0.88rem;
    font-weight: 600;
    border: 1.5px solid var(--primary-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    outline: none;
}

.edit-block-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.edit-block-header .edit-branch-name {
    flex: 1;
}

.btn-remove-branch {
    flex-shrink: 0;
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 1rem;
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    opacity: 0.7;
    transition: opacity 0.15s;
}
.btn-remove-branch:hover { opacity: 1; }

.edit-children {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 6px;
}

.edit-child-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.edit-child-input {
    flex: 1;
    height: 30px;
    padding: 0 8px;
    font-size: 0.82rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.15s;
    box-sizing: border-box;
}

.edit-child-input:focus {
    border-color: var(--primary-color);
}

.btn-remove-child {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    transition: color 0.15s;
}
.btn-remove-child:hover { color: #ef4444; }

.btn-add-child {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.78rem;
    color: var(--primary-color);
    background: none;
    border: 1px dashed var(--primary-color);
    border-radius: var(--radius-md);
    padding: 3px 10px;
    cursor: pointer;
    opacity: 0.75;
    transition: opacity 0.15s;
    margin-top: 2px;
}
.btn-add-child:hover { opacity: 1; }

.btn-add-branch {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.82rem;
    color: var(--primary-color);
    background: none;
    border: 1.5px dashed var(--primary-color);
    border-radius: var(--radius-md);
    padding: 7px 14px;
    cursor: pointer;
    width: 100%;
    justify-content: center;
    opacity: 0.75;
    transition: opacity 0.15s;
    margin-top: 4px;
}
.btn-add-branch:hover { opacity: 1; }

.edit-modal-footer {
    padding: 14px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    flex-shrink: 0;
}

.btn-modal-cancel {
    padding: 7px 18px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.btn-modal-cancel:hover {
    border-color: var(--text-secondary);
}

.btn-modal-apply {
    padding: 7px 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: opacity 0.15s;
}

.btn-modal-apply:hover { opacity: 0.88; }

/* 响应式 */
@media (max-width: 1024px) {
    .mindmap-workspace {
        grid-template-columns: 180px 1fr;
    }

    .sidemenu-item {
        padding-left: 20px;
    }
}

@media (max-width: 768px) {
    .mindmap-workspace {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .ai-sidemenu {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 8px;
    }

    .sidemenu-group {
        flex: 1;
        min-width: 140px;
    }

    .tool-panel {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .mindmap-canvas-wrapper {
        min-height: 360px;
    }
}