/* ============== 图谱页面特定样式 ============== */

.projection-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    min-height: 42px;
    padding: 0 20px;
    background: #0e151d;
    border-bottom: 1px solid var(--kg-border);
    overflow-x: auto;
    scrollbar-width: none;
}

.projection-nav[hidden] { display: none; }

.projection-nav::-webkit-scrollbar { display: none; }

.projection-nav a {
    min-width: 68px;
    padding: 10px 14px;
    color: var(--kg-text-secondary);
    text-align: center;
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap;
}

.projection-nav a:hover,
.projection-nav a.active { color: var(--kg-text-primary); background: #18222d; box-shadow: inset 0 -2px 0 #2ba6a8; }

.projection-nav a.is-disabled {
    color: #566371;
    cursor: not-allowed;
    background: transparent;
    box-shadow: none;
}

.projection-nav a.is-disabled:hover {
    color: #566371;
    background: transparent;
    box-shadow: none;
}

.kg-chain-guide {
    position: absolute;
    inset: 0;
    z-index: 4;
    overflow: hidden;
    pointer-events: none;
}

.kg-chain-phase,
.kg-chain-stage,
.kg-chain-context-label {
    position: absolute;
    transform: translateX(-50%);
}

.kg-chain-phase {
    top: 10px;
    height: 20px;
    border-bottom: 1px solid rgba(139, 148, 158, 0.22);
    color: #8b949e;
    font-size: 11px;
    line-height: 18px;
    text-align: center;
}

.kg-chain-stage {
    top: 34px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    width: 128px;
    height: 64px;
    padding: 7px 9px;
    border: 1px solid rgba(139, 148, 158, 0.2);
    border-bottom-color: rgba(88, 166, 255, 0.6);
    border-radius: 4px;
    background: rgba(22, 27, 34, 0.92);
    color: #e6edf3;
    text-align: center;
}

.kg-chain-stage::after {
    position: absolute;
    top: 100%;
    left: calc(50% + var(--kg-chain-guide-offset, 0px));
    width: 1px;
    height: calc(100vh - 190px);
    background: linear-gradient(to bottom, rgba(88, 166, 255, 0.14), rgba(88, 166, 255, 0));
    content: '';
}

.kg-chain-stage-index {
    width: 100%;
    color: #2db7c4;
    font-family: Consolas, monospace;
    font-size: 10px;
    line-height: 1;
    text-align: center;
}

.kg-chain-stage strong {
    width: 100%;
    overflow: hidden;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.2;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kg-chain-stage small {
    color: #8b949e;
    font-size: 10px;
    line-height: 1;
}

.kg-chain-stage-short {
    display: none;
}

.kg-chain-stage .kg-chain-stage-full {
    width: max-content;
    text-overflow: clip;
    white-space: nowrap;
}

.kg-chain-stage.is-offscreen,
.kg-chain-context-label.is-offscreen {
    opacity: 0;
}

.kg-chain-context-label {
    display: grid;
    gap: 3px;
    min-width: 150px;
    padding: 7px 10px;
    border: 1px solid rgba(210, 153, 34, 0.48);
    border-radius: 4px;
    background: rgba(22, 27, 34, 0.94);
    text-align: center;
}

.kg-chain-context-label span {
    color: #d29922;
    font-size: 10px;
}

.kg-chain-context-label strong {
    color: #e6edf3;
    font-size: 12px;
    font-weight: 600;
}

.kg-chain-relation-key {
    position: absolute;
    top: 88px;
    right: 16px;
    display: flex;
    gap: 14px;
    color: #8b949e;
    font-size: 10px;
}

.kg-chain-relation-key span::before {
    display: inline-block;
    width: 22px;
    margin-right: 5px;
    border-top: 2px solid #2db7c4;
    content: '';
    vertical-align: middle;
}

.kg-chain-relation-key .is-scope::before {
    border-top: 1px solid rgba(139, 148, 158, 0.55);
}

.kg-chain-relation-key .is-support::before {
    border-top: 1px solid rgba(63, 185, 80, 0.55);
}

.kg-chain-relation-key .is-context::before {
    border-top: 1px solid rgba(210, 153, 34, 0.55);
}

/* 顶部品牌导航 */
.graph-console-nav {
    display: grid;
    grid-template-columns: minmax(220px, 1fr) auto minmax(130px, 1fr);
    align-items: center;
    gap: 14px;
    min-height: 48px;
    background: var(--kg-bg-elevated);
    border-bottom: 1px solid var(--kg-border);
    padding: 0 20px;
}

.graph-brand {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--kg-text-primary);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
}

.graph-brand-dot {
    width: 11px;
    height: 11px;
    border: 2px solid var(--kg-accent-purple);
    border-radius: 999px;
    box-shadow: 0 0 0 4px rgba(163, 113, 247, 0.18);
}

.graph-console-nav nav {
    display: inline-flex;
    gap: 4px;
    background: var(--kg-bg-card);
    border-radius: 999px;
    padding: 4px;
}

.graph-console-nav nav a {
    color: var(--kg-text-secondary);
    font-size: 13px;
    padding: 6px 12px;
    text-decoration: none;
    border-radius: 999px;
    transition: all 0.2s;
}

.graph-console-nav nav a:hover {
    color: var(--kg-text-primary);
    background: var(--kg-bg-hover);
}

.graph-console-nav #cloudStatusText {
    justify-self: end;
    border: 1px solid var(--kg-border);
    border-radius: 999px;
    background: var(--kg-bg-card);
    padding: 5px 10px;
    color: var(--kg-text-secondary);
    font-size: 12px;
}

/* 工具栏标题 */
.toolbar {
    display: grid;
    grid-template-columns: minmax(160px, 1fr) auto auto;
    gap: 12px 16px;
}

.toolbar-title {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.toolbar-title h1 {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kg-primary-tools {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-width: 0;
}

.kg-node-search {
    display: grid;
    grid-template-columns: minmax(160px, 280px) auto;
    gap: 6px;
    min-width: 0;
}

#nodeSearchInput {
    width: 100%;
    min-width: 0;
    min-height: 36px;
    border: 1px solid var(--kg-border);
    border-radius: 6px;
    background: var(--kg-bg-input);
    color: var(--kg-text-primary);
    padding: 7px 10px;
    font-size: 14px;
}

#nodeSearchInput:focus {
    border-color: var(--kg-accent-blue);
    outline: 2px solid rgba(88, 166, 255, 0.2);
}

.kg-search-btn {
    min-height: 36px;
    padding-inline: 12px;
}

.kg-task-picker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--kg-text-secondary);
    font-size: 13px;
    white-space: nowrap;
}

.kg-task-picker select {
    width: clamp(190px, 24vw, 340px);
    min-height: 36px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.kg-task-picker[hidden] { display: none; }

.kg-layout-picker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--kg-text-secondary);
    font-size: 13px;
    white-space: nowrap;
}

.kg-layout-picker[hidden] { display: none; }

.kg-layout-picker select {
    min-width: 112px;
    min-height: 36px;
}

.kg-view-summary {
    min-width: 86px;
    color: var(--kg-text-secondary);
    font-size: 12px;
    white-space: nowrap;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.kg-node-actions {
    margin-bottom: 14px;
}

.kg-expand-node-btn {
    width: 100%;
    min-height: 38px;
    border: 1px solid var(--kg-accent-blue);
    border-radius: 6px;
    background: rgba(88, 166, 255, 0.1);
    color: var(--kg-text-primary);
    cursor: pointer;
    font-size: 13px;
}

.kg-expand-node-btn:hover {
    background: var(--kg-accent-blue);
    color: #fff;
}

.kg-expand-node-btn span {
    color: var(--kg-accent-amber);
    font-weight: 600;
}

.portal-link {
    flex-shrink: 0;
    color: var(--kg-text-secondary);
    font-size: 13px;
    text-decoration: none;
    padding: 6px 10px;
    background: var(--kg-bg-card);
    border: 1px solid var(--kg-border);
    border-radius: 6px;
    transition: all 0.2s;
}

.portal-link:hover {
    color: var(--kg-text-primary);
    background: var(--kg-accent-blue);
    border-color: var(--kg-accent-blue);
}

.graph-slug-pill {
    flex-shrink: 0;
    color: var(--kg-text-secondary);
    font-family: Consolas, monospace;
    font-size: 12px;
    background: var(--kg-bg-card);
    border: 1px solid var(--kg-border);
    border-radius: 999px;
    padding: 5px 9px;
}

/* ============== 资源展示 ============== */

/* 资源卡片 */
.kg-resource-card {
    padding: 12px;
    background: var(--kg-bg-card);
    border: 1px solid var(--kg-border-subtle);
    border-radius: 6px;
    margin-bottom: 10px;
    transition: all 0.2s;
}

.kg-resource-card:hover {
    border-color: var(--kg-border);
    background: var(--kg-bg-hover);
}

.kg-resource-card-expanded {
    border-color: var(--kg-accent-amber);
    box-shadow: 0 0 16px rgba(245, 158, 11, 0.22);
}

.kg-resource-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.kg-resource-row + .kg-resource-row {
    margin-top: 8px;
}

/* 资源类型徽章（Tailwind 柔和色板） */
.kg-resource-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    color: #fff;
    font-weight: 500;
    flex-shrink: 0;
    letter-spacing: 0.2px;
}

.kg-badge-video        { background: var(--kg-tag-video); }
.kg-badge-microcourse  { background: var(--kg-tag-microcourse); }
.kg-badge-animation    { background: var(--kg-tag-animation); }
.kg-badge-skillvideo   { background: var(--kg-tag-skillvideo); }
.kg-badge-ppt          { background: var(--kg-tag-ppt); }
.kg-badge-pdf          { background: var(--kg-tag-pdf); }
.kg-badge-cert         { background: var(--kg-tag-cert); }
.kg-badge-other        { background: var(--kg-tag-other); }

/* 资源标题 */
.kg-resource-title {
    flex: 1;
    min-width: 0;
    color: var(--kg-text-primary);
    font-size: 14px;
    word-break: break-all;
    line-height: 1.5;
}

/* 元数据行 */
.kg-resource-meta {
    justify-content: space-between;
}

.kg-resource-size {
    color: var(--kg-text-secondary);
    font-size: 12px;
}

.kg-resource-actions {
    display: flex;
    gap: 6px;
    margin-left: auto;
}

/* 预览/下载按钮 */
.kg-preview-btn,
.kg-download-btn {
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid var(--kg-border);
    background: var(--kg-bg-elevated);
    color: var(--kg-text-secondary);
    font-size: 12px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.kg-preview-btn:hover,
.kg-download-btn:hover {
    background: var(--kg-accent-blue);
    color: #fff;
    border-color: var(--kg-accent-blue);
}

.kg-resource-card-expanded .kg-preview-btn {
    background: var(--kg-accent-amber);
    color: #000;
    border-color: var(--kg-accent-amber);
    font-weight: 600;
}

/* 旧版 inline 预览（保留兼容，弹窗版本不再使用） */
.kg-preview-area {
    margin-top: 10px;
    background: var(--kg-bg-elevated);
    border-radius: 4px;
    padding: 8px;
}

.kg-preview-iframe {
    width: 100%;
    height: 480px;
    border: 0;
    border-radius: 4px;
    background: #fff;
}

.kg-preview-video {
    width: 100%;
    max-height: 480px;
    border-radius: 4px;
    background: #000;
}

.kg-preview-image-wrap {
    text-align: center;
}

.kg-preview-image {
    max-width: 100%;
    max-height: 480px;
    border-radius: 4px;
}

.kg-preview-empty {
    color: var(--kg-text-secondary);
    text-align: center;
    padding: 20px;
}

.kg-preview-hint {
    color: var(--kg-accent-amber);
    font-size: 11px;
    margin-bottom: 6px;
}

/* ============== 下级资源汇总 ============== */
.kg-summary-empty {
    color: var(--kg-text-secondary);
    font-size: 13px;
    margin: 6px 0 10px;
    padding: 6px 0;
}

.kg-summary-line {
    color: var(--kg-text-primary);
    font-size: 13px;
    margin-bottom: 10px;
}

.kg-summary-line strong {
    color: var(--kg-accent-amber);
    font-size: 16px;
}

.kg-summary-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.kg-descendant-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--kg-bg-card);
    border: 1px solid var(--kg-border-subtle);
    border-radius: 4px;
    color: var(--kg-text-primary);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s;
}

.kg-descendant-link:hover {
    background: var(--kg-accent-blue);
    border-color: var(--kg-accent-blue);
    color: #fff;
}

.kg-layout-switch {
    display: inline-flex;
    min-height: 36px;
    padding: 2px;
    border: 1px solid var(--kg-border);
    border-radius: 6px;
    background: var(--kg-bg-input);
}

.kg-layout-switch[hidden] { display: none; }

.kg-layout-switch button {
    min-width: 70px;
    padding: 6px 10px;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--kg-text-secondary);
    cursor: pointer;
    font-size: 13px;
}

.kg-layout-switch button:hover { color: var(--kg-text-primary); }

.kg-layout-switch button.active {
    background: var(--kg-bg-hover);
    color: var(--kg-text-primary);
    box-shadow: inset 0 -2px 0 var(--kg-accent-blue);
}

.kg-cross-graph-links {
    display: grid;
    gap: 8px;
}

.kg-cross-graph-link {
    display: block;
    padding: 10px 12px;
    border: 1px solid var(--kg-accent-blue);
    border-radius: 4px;
    color: var(--kg-accent-blue);
    text-align: center;
    text-decoration: none;
}

.kg-cross-graph-link:hover {
    background: var(--kg-accent-blue);
    color: #fff;
}

.kg-descendant-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 8px;
}

.kg-descendant-count {
    flex-shrink: 0;
    color: var(--kg-accent-amber);
    font-size: 12px;
    background: rgba(245, 158, 11, 0.12);
    padding: 2px 8px;
    border-radius: 999px;
}

.kg-descendant-link:hover .kg-descendant-count {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

/* ============== 底部资源统计入口 ============== */
.kg-stats-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--kg-bg-card);
    border: 1px solid var(--kg-border);
    border-radius: 999px;
    color: var(--kg-text-secondary);
    text-decoration: none;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.kg-stats-pill:hover {
    background: var(--kg-bg-hover);
    color: var(--kg-text-primary);
    border-color: var(--kg-accent-purple);
}

.kg-stats-pill-active {
    background: var(--kg-accent-purple);
    color: #fff;
    border-color: var(--kg-accent-purple);
}

.kg-stats-icon {
    font-size: 14px;
}

.kg-stats-sep {
    color: var(--kg-text-tertiary);
    margin: 0 2px;
}

.kg-stats-detail {
    position: absolute;
    bottom: 36px;
    left: 20px;
    background: var(--kg-bg-elevated);
    border: 1px solid var(--kg-border);
    border-radius: 6px;
    padding: 10px 14px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
    min-width: 180px;
    z-index: 200;
}

.kg-stats-detail.hidden {
    display: none;
}

.kg-stat-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    font-size: 12px;
    color: var(--kg-text-secondary);
}

.kg-stat-type {
    color: var(--kg-text-primary);
}

.kg-stat-count {
    color: var(--kg-accent-amber);
    font-weight: 600;
}

/* "只看有资源"开关特殊样式（琥珀色高亮） */
.kg-toggle-resource:has(input:checked) {
    background: var(--kg-accent-amber);
    color: #000;
    border-color: var(--kg-accent-amber);
}

.kg-toggle-resource input:checked {
    accent-color: var(--kg-accent-amber);
}

/* 资源栏目标题 */
.relations-section h4 {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ============== 资源上传区 ============== */
.kg-upload-box {
    display: grid;
    gap: 8px;
    padding: 10px 12px;
    background: var(--kg-bg-card);
    border: 1px solid var(--kg-border-subtle);
    border-radius: 4px;
}

.kg-upload-box input,
.kg-upload-box select {
    width: 100%;
    min-height: 34px;
    border: 1px solid var(--kg-border);
    border-radius: 4px;
    background: var(--kg-bg-input);
    color: var(--kg-text-primary);
    padding: 6px 8px;
}

.kg-upload-box input[type="file"] {
    padding: 5px 8px;
}

.kg-upload-status {
    min-height: 18px;
    color: var(--kg-text-secondary);
    font-size: 12px;
    line-height: 1.5;
}

#cloudStatusText {
    color: var(--kg-text-secondary);
}

/* ============== 资源预览弹窗（90% 视口）============== */

.kg-preview-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kg-preview-modal.hidden {
    display: none;
}

.kg-preview-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
    backdrop-filter: blur(3px);
}

.kg-preview-window {
    position: relative;
    width: 90vw;
    height: 90vh;
    background: var(--kg-bg-elevated);
    border: 1px solid var(--kg-border);
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.kg-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    background: var(--kg-bg-base);
    border-bottom: 1px solid var(--kg-border);
    flex-shrink: 0;
}

.kg-preview-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex: 1;
}

.kg-preview-title {
    color: var(--kg-text-primary);
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.kg-preview-close {
    background: none;
    border: none;
    color: var(--kg-text-secondary);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    padding: 0 8px;
    transition: color 0.2s;
    flex-shrink: 0;
}

.kg-preview-close:hover {
    color: var(--kg-accent-amber);
}

.kg-preview-body {
    flex: 1;
    min-height: 0;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
}

.kg-preview-iframe-large,
.kg-preview-video-large {
    width: 100%;
    height: 100%;
    border: 0;
    background: #fff;
    object-fit: contain;
}

.kg-preview-image-large {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.kg-preview-empty-large {
    color: var(--kg-text-secondary);
    font-size: 16px;
    padding: 40px;
}

.kg-preview-footer-hint {
    padding: 8px 18px;
    background: var(--kg-bg-base);
    border-top: 1px solid var(--kg-border);
    color: var(--kg-accent-amber);
    font-size: 12px;
    text-align: center;
    flex-shrink: 0;
}

.kg-preview-footer-hint.hidden {
    display: none;
}

@media (max-width: 1180px) {
    .toolbar {
        grid-template-columns: minmax(0, 1fr) auto;
    }

    .kg-primary-tools {
        grid-column: 1 / -1;
        grid-row: 2;
        justify-content: flex-start;
    }
}

@media (max-width: 700px) {
    .projection-nav { padding-inline: 12px; }

    .projection-nav a {
        flex: 1;
        min-width: 0;
        padding-inline: 6px;
        font-size: 12px;
    }

    .kg-chain-phase,
    .kg-chain-relation-key,
    .kg-chain-stage-index,
    .kg-chain-stage small {
        display: none;
    }

    .kg-chain-stage {
        top: 8px;
        display: block;
        width: 56px;
        height: auto;
        min-height: 30px;
        padding: 7px 4px;
        text-align: center;
    }

    .kg-chain-stage.is-primary-stage {
        display: block;
        width: 56px;
        transform: translateX(-50%);
    }

    .kg-chain-stage::after {
        top: 100%;
    }

    .kg-chain-stage-full {
        display: none;
    }

    .kg-chain-stage .kg-chain-stage-short {
        display: block;
        line-height: 1.1;
        overflow-wrap: anywhere;
        white-space: normal;
    }

    .kg-chain-context-label {
        min-width: 118px;
        padding: 5px 8px;
    }

    .toolbar {
        grid-template-columns: minmax(0, 1fr);
        padding: 10px 12px;
    }

    .kg-primary-tools {
        grid-column: 1;
        grid-row: auto;
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        width: 100%;
    }

    .kg-node-search {
        grid-template-columns: minmax(0, 1fr) auto;
        width: 100%;
    }

    .kg-task-picker {
        display: block;
        width: 100%;
    }

    .kg-task-picker select {
        width: 100%;
    }

    .kg-view-summary {
        min-width: 0;
        white-space: normal;
    }

    .toolbar-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .kg-layout-switch {
        width: 100%;
    }

    .kg-layout-switch button {
        flex: 1;
        min-width: 0;
    }

    .toolbar-actions .btn,
    .toolbar-actions .toggle-label,
    .kg-layout-picker,
    .kg-layout-picker select {
        width: 100%;
        min-width: 0;
        min-height: 36px;
        justify-content: center;
    }

    .panel {
        width: 100vw;
        max-width: none;
    }

    .statusbar {
        display: grid;
        grid-template-columns: minmax(80px, 0.8fr) minmax(0, 1.5fr);
        align-items: center;
        gap: 10px;
        padding: 6px 12px;
    }

    .statusbar > .hint {
        display: none;
    }

    #statusText {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    #statsText {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        min-width: 0;
        overflow: hidden;
        white-space: nowrap;
    }

    #statsText .kg-stats-icon,
    #statsText .kg-stats-pill .kg-stats-sep,
    #statsText .kg-stats-pill span:last-child {
        display: none;
    }

    #statsText .kg-stats-pill {
        padding: 3px 7px;
    }
}

/* ============== 单页面图谱外壳 ============== */
.unified-header {
    position: relative;
    z-index: 120;
    display: grid;
    grid-template-columns: minmax(180px, 1fr) auto minmax(360px, 1fr);
    align-items: center;
    gap: 16px;
    min-height: 64px;
    padding: 10px 18px;
    border-bottom: 1px solid var(--kg-border);
    background: var(--kg-bg-elevated);
}

.unified-header .toolbar-title {
    display: grid;
    gap: 2px;
    min-width: 0;
}

.unified-header h1 {
    overflow: hidden;
    color: var(--kg-text-primary);
    font-size: 16px;
    font-weight: 650;
    line-height: 1.4;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kg-view-summary {
    overflow: hidden;
    color: var(--kg-text-secondary);
    font-family: 'JetBrains Mono', Consolas, monospace;
    font-size: 12px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.unified-header .projection-nav {
    display: inline-flex;
    gap: 2px;
    min-height: 36px;
    padding: 3px;
    overflow: visible;
    border: 1px solid var(--kg-border);
    border-radius: 6px;
    background: var(--kg-bg-input);
}

.mode-tab {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-width: 72px;
    min-height: 28px;
    padding: 5px 10px;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--kg-text-secondary);
    cursor: pointer;
    font: inherit;
    font-size: 12px;
    white-space: nowrap;
}

.mode-tab::after {
    display: inline-grid;
    width: 14px;
    height: 14px;
    flex: 0 0 14px;
    place-items: center;
    border: 1px solid currentColor;
    border-radius: 50%;
    content: "i";
    font-family: Georgia, serif;
    font-size: 10px;
    font-style: italic;
    font-weight: 700;
    line-height: 1;
    opacity: 0.82;
}

.mode-tab::before {
    position: absolute;
    z-index: 20;
    top: calc(100% + 9px);
    left: 50%;
    width: max-content;
    max-width: min(260px, calc(100vw - 24px));
    padding: 8px 10px;
    transform: translate(-50%, -4px);
    border: 1px solid var(--kg-border);
    border-radius: 5px;
    background: var(--kg-bg-elevated);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.38);
    color: var(--kg-text-primary);
    content: attr(data-help);
    font-size: 12px;
    font-weight: 400;
    line-height: 1.55;
    opacity: 0;
    pointer-events: none;
    text-align: left;
    white-space: normal;
    transition: opacity 120ms ease, transform 120ms ease;
}

.mode-tab[data-view="overview"]::before { left: 0; transform: translate(0, -4px); }
.mode-tab[data-view="all"]::before { right: 0; left: auto; transform: translate(0, -4px); }

.mode-tab:hover::before,
.mode-tab:focus-visible::before {
    opacity: 1;
    transform: translate(-50%, 0);
}

.mode-tab[data-view="overview"]:hover::before,
.mode-tab[data-view="overview"]:focus-visible::before,
.mode-tab[data-view="all"]:hover::before,
.mode-tab[data-view="all"]:focus-visible::before { transform: translate(0, 0); }

.mode-tab:hover { color: var(--kg-text-primary); background: var(--kg-bg-hover); }
.mode-tab.active { color: #fff; background: var(--kg-accent-blue); }
.mode-tab.is-disabled { color: var(--kg-text-tertiary); cursor: not-allowed; }

.header-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    min-width: 0;
}

.kg-node-search {
    display: grid;
    grid-template-columns: minmax(110px, 190px) 34px;
}

.kg-node-search input,
.kg-task-picker select {
    min-width: 0;
    height: 34px;
    padding: 6px 10px;
    border: 1px solid var(--kg-border);
    background: var(--kg-bg-input);
    color: var(--kg-text-primary);
    font-size: 12px;
}

.kg-node-search input { border-radius: 5px 0 0 5px; }
.kg-task-picker select { max-width: 190px; border-radius: 5px; }

.icon-btn,
.coverage-btn {
    min-height: 34px;
    border: 1px solid var(--kg-border);
    background: var(--kg-bg-card);
    color: var(--kg-text-primary);
    cursor: pointer;
}

.icon-btn {
    border-left: 0;
    border-radius: 0 5px 5px 0;
    font-size: 18px;
}

.icon-btn:hover,
.coverage-btn:hover { background: var(--kg-bg-hover); }

.coverage-btn {
    padding: 0 10px;
    border-radius: 5px;
    color: var(--kg-text-secondary);
    font-size: 12px;
    white-space: nowrap;
}

.coverage-btn strong {
    color: var(--kg-accent-blue);
    font-family: 'JetBrains Mono', Consolas, monospace;
}

.graph-options-bar {
    display: flex;
    min-width: 0;
    min-height: 44px;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    overflow: visible;
    border-bottom: 1px solid var(--kg-border);
    background: var(--kg-bg-elevated);
}

.menu-command,
.menu-field,
.menu-toggle {
    min-height: 34px;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--kg-text-primary);
    font: inherit;
    font-size: 12px;
}

.menu-command { padding: 8px 10px; text-align: center; cursor: pointer; }
.menu-command:hover { background: var(--kg-bg-hover); }
.menu-field,
.menu-toggle { display: flex; align-items: center; gap: 8px; padding: 5px 10px; }
.menu-field select { max-width: 112px; padding: 5px 7px; border-radius: 4px; font-size: 12px; }
.menu-toggle input { accent-color: var(--kg-accent-blue); }

.graph-options-bar .task-filter {
    flex: 0 1 390px;
    margin-right: 4px;
    padding-left: 2px;
    padding-right: 12px;
    border-right: 1px solid var(--kg-border);
}

.task-filter > span {
    color: var(--kg-text-secondary);
    font-weight: 600;
}

.graph-options-bar .task-filter select {
    width: clamp(210px, 24vw, 290px);
    max-width: 290px;
}

.graph-options-bar .task-filter[hidden] { display: none; }

.node-color-legend {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    overflow-x: auto;
    color: var(--kg-text-secondary);
    font-size: 12px;
    scrollbar-width: none;
    white-space: nowrap;
}

.node-color-legend::-webkit-scrollbar { display: none; }

.node-color-legend span { display: inline-flex; align-items: center; gap: 4px; }

.node-color-legend i {
    width: 12px;
    height: 12px;
    flex: 0 0 12px;
    border-radius: 50%;
    box-shadow: 0 0 5px currentColor;
}

.coverage-drawer {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 105;
    display: flex;
    width: min(400px, 92vw);
    flex-direction: column;
    border-left: 1px solid var(--kg-border);
    background: var(--kg-bg-elevated);
    box-shadow: -12px 0 30px rgba(0, 0, 0, 0.42);
    transition: transform 0.25s ease;
}

.coverage-drawer.hidden { transform: translateX(100%); pointer-events: none; }
.coverage-drawer .panel-header h2 { margin-top: 2px; font-size: 17px; }
.drawer-eyebrow { color: var(--kg-text-secondary); font-size: 10px; }
.coverage-content { overflow-y: auto; padding: 18px; }

.coverage-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border: 1px solid var(--kg-border);
    border-radius: 6px;
}

.coverage-summary div { padding: 14px 10px; border-right: 1px solid var(--kg-border-subtle); }
.coverage-summary div:last-child { border-right: 0; }
.coverage-summary strong,
.coverage-summary span { display: block; }
.coverage-summary strong { color: var(--kg-accent-blue); font-family: 'JetBrains Mono', Consolas, monospace; font-size: 20px; }
.coverage-summary span { margin-top: 4px; color: var(--kg-text-secondary); font-size: 10px; }
.coverage-summary .is-warning strong { color: var(--kg-accent-amber); }

.coverage-gaps { margin-top: 22px; }
.coverage-gaps h3 { margin: 0 0 10px; color: var(--kg-text-primary); font-size: 13px; }
.coverage-gaps ul { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.coverage-gaps li { display: grid; gap: 3px; padding: 10px 0; border-bottom: 1px solid var(--kg-border-subtle); }
.coverage-gaps li strong { color: var(--kg-text-primary); font-size: 12px; }
.coverage-gaps li span,
.coverage-gaps p,
.coverage-gaps small { color: var(--kg-text-secondary); font-size: 11px; line-height: 1.6; }
.coverage-gaps small { display: block; margin-top: 12px; }
.coverage-disclaimer {
    margin: 20px 0 0;
    padding-top: 12px;
    border-top: 1px solid var(--kg-border-subtle);
    color: var(--kg-accent-amber);
    font-size: 11px;
    line-height: 1.6;
}

.statusbar {
    min-height: 34px;
    padding: 5px 14px;
    background: var(--kg-bg-elevated);
    color: var(--kg-text-secondary);
}

@media (max-width: 1180px) {
    .unified-header { grid-template-columns: minmax(160px, 1fr) auto; }
    .header-actions { grid-column: 1 / -1; justify-content: flex-start; }
    .kg-node-search { flex: 1; grid-template-columns: minmax(120px, 1fr) 34px; }
}

@media (max-width: 700px) {
    .unified-header {
        grid-template-columns: minmax(0, 1fr);
        gap: 8px;
        min-height: 0;
        padding: 9px 10px;
    }

    .unified-header .projection-nav {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        width: 100%;
        padding: 3px;
    }

    .mode-tab { min-width: 0; padding-inline: 4px; }
    .header-actions { grid-column: 1; width: 100%; }
    .kg-node-search { flex: 1; min-width: 0; }
    .coverage-btn { padding-inline: 8px; }

    .graph-options-bar {
        min-height: 0;
        flex-wrap: wrap;
        gap: 4px;
        padding: 5px 8px;
    }

    .menu-command,
    .menu-field,
    .menu-toggle {
        min-height: 32px;
        padding: 4px 8px;
    }

    .menu-field select { max-width: 104px; }

    .graph-options-bar .task-filter {
        display: flex;
        flex: 1 0 100%;
        width: 100%;
        margin: 0;
        padding: 4px 8px 7px;
        border-right: 0;
        border-bottom: 1px solid var(--kg-border-subtle);
    }

    .graph-options-bar .task-filter select {
        flex: 1;
        width: auto;
        max-width: none;
    }

    .graph-options-bar .task-filter[hidden] { display: none; }

    .node-color-legend {
        flex: 1 0 100%;
        width: 100%;
        margin-left: 0;
        padding: 5px 8px 2px;
        border-top: 1px solid var(--kg-border-subtle);
    }

    .coverage-drawer {
        top: auto;
        width: 100vw;
        max-width: none;
        height: min(72vh, 620px);
        border-top: 1px solid var(--kg-border);
        border-left: 0;
        box-shadow: 0 -12px 30px rgba(0, 0, 0, 0.48);
        transform: translateY(0);
    }

    .coverage-drawer.hidden { transform: translateY(100%); }
    .statusbar { grid-template-columns: minmax(90px, 1fr) auto; }
}