:root {
    --admin-sidebar-width: 260px;
    --admin-header-height: 80px;
    --admin-bg: #f8fafc;
    --admin-card-bg: #ffffff;
    --admin-text: #1e293b;
    --admin-text-muted: #64748b;
    --admin-border: #e2e8f0;
    --admin-primary: #3b82f6;
    --admin-primary-hover: #2563eb;
    --admin-success: #22c55e;
    --admin-warning: #f59e0b;
    --admin-danger: #ef4444;
    --admin-info: #06b6d4;
    --sidebar-gradient-start: #1e293b;
    --sidebar-gradient-end: #0f172a;
}

* {
    box-sizing: border-box;
}

body {
    background: var(--admin-bg);
    color: var(--admin-text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    margin: 0;
}

.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: var(--admin-sidebar-width);
    background: linear-gradient(180deg, var(--sidebar-gradient-start) 0%, var(--sidebar-gradient-end) 100%);
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand {
    color: #fff;
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
}

.sidebar-brand:hover {
    color: #fff;
}

.sidebar-brand i {
    color: var(--admin-info);
}

.sidebar-nav {
    list-style: none;
    padding: 1rem 0;
    margin: 0;
    flex: 1;
}

.sidebar-nav .nav-item {
    margin: 0.25rem 0.75rem;
}

.sidebar-nav .nav-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    padding: 0.875rem 1rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.2s ease;
    font-weight: 500;
}

.sidebar-nav .nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.sidebar-nav .nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, var(--admin-primary) 0%, var(--admin-info) 100%);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.sidebar-nav .nav-link i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.language-switch {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.btn-lang {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-lang:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.btn-lang.active {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: #fff;
}

.admin-main {
    flex: 1;
    margin-left: var(--admin-sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.admin-header {
    height: var(--admin-header-height);
    background: var(--admin-card-bg);
    border-bottom: 1px solid var(--admin-border);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-title {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--admin-text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.page-subtitle {
    color: var(--admin-text-muted);
    font-size: 0.875rem;
    margin: 0;
}

.admin-content {
    flex: 1;
    padding: 1.5rem 2rem;
    overflow-x: hidden;
}

.card {
    background: var(--admin-card-bg);
    border: 1px solid var(--admin-border);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--admin-border);
    padding: 1rem 1.5rem;
}

.card-title {
    color: var(--admin-text);
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: transparent;
    border-top: 1px solid var(--admin-border);
    padding: 1rem 1.5rem;
}

.btn {
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--admin-primary-hover);
    border-color: var(--admin-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background: #f1f5f9;
    border-color: var(--admin-border);
    color: var(--admin-text);
}

.btn-secondary:hover {
    background: #e2e8f0;
}

.btn-success {
    background: var(--admin-success);
    border-color: var(--admin-success);
}

.btn-danger {
    background: var(--admin-danger);
    border-color: var(--admin-danger);
}

.btn-outline-primary {
    border: 1px solid var(--admin-primary);
    color: var(--admin-primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--admin-primary);
    color: #fff;
}

.btn-outline-secondary {
    border: 1px solid var(--admin-border);
    color: var(--admin-text-muted);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: #f1f5f9;
    color: var(--admin-text);
}

.btn-outline-info {
    border: 1px solid var(--admin-info);
    color: var(--admin-info);
    background: transparent;
}

.btn-outline-info:hover {
    background: var(--admin-info);
    color: #fff;
}

.btn-outline-success {
    border: 1px solid var(--admin-success);
    color: var(--admin-success);
    background: transparent;
}

.btn-outline-success:hover {
    background: var(--admin-success);
    color: #fff;
}

.btn-outline-warning {
    border: 1px solid var(--admin-warning);
    color: var(--admin-warning);
    background: transparent;
}

.btn-outline-warning:hover {
    background: var(--admin-warning);
    color: #fff;
}

.btn-outline-danger {
    border: 1px solid var(--admin-danger);
    color: var(--admin-danger);
    background: transparent;
}

.btn-outline-danger:hover {
    background: var(--admin-danger);
    color: #fff;
}

.form-control, .form-select {
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    color: var(--admin-text);
    background: #fff;
}

.form-control:focus, .form-select:focus {
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-control::placeholder {
    color: var(--admin-text-muted);
}

.form-label {
    color: var(--admin-text);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.table {
    color: var(--admin-text);
}

.table thead th {
    background: #f8fafc;
    border-bottom: 2px solid var(--admin-border);
    color: var(--admin-text);
    font-weight: 600;
    padding: 1rem;
}

.table tbody td {
    border-bottom: 1px solid var(--admin-border);
    padding: 1rem;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: #f8fafc;
}

.badge {
    padding: 0.375rem 0.625rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.75rem;
}

.badge.bg-success {
    background: var(--admin-success) !important;
}

.badge.bg-warning {
    background: var(--admin-warning) !important;
    color: #fff;
}

.badge.bg-info {
    background: var(--admin-info) !important;
}

.badge.bg-secondary {
    background: #94a3b8 !important;
}

.badge.bg-danger {
    background: var(--admin-danger) !important;
}

.modal-content {
    background: var(--admin-card-bg);
    border: 1px solid var(--admin-border);
    border-radius: 16px;
}

.modal-header {
    border-bottom: 1px solid var(--admin-border);
    padding: 1.25rem 1.5rem;
}

.modal-title {
    color: var(--admin-text);
    font-weight: 600;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--admin-border);
    padding: 1rem 1.5rem;
}

.btn-close {
    opacity: 0.5;
}

.btn-close:hover {
    opacity: 1;
}

.stat-card {
    text-align: center;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--admin-primary);
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--admin-text);
}

.stat-card .stat-label {
    color: var(--admin-text-muted);
    font-size: 0.9rem;
}

.metric-card {
    text-align: center;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 10px;
    border: 1px solid var(--admin-border);
}

.metric-card .metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--admin-primary);
}

.metric-card .metric-label {
    color: var(--admin-text-muted);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.upload-zone {
    border: 2px dashed var(--admin-border);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: #f8fafc;
}

.upload-zone:hover {
    border-color: var(--admin-primary);
    background: rgba(59, 130, 246, 0.05);
}

.upload-zone i {
    font-size: 3rem;
    color: var(--admin-primary);
    margin-bottom: 1rem;
}

.progress {
    background: #e2e8f0;
    border-radius: 8px;
    height: 8px;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--admin-primary), var(--admin-info));
}

.alert {
    border-radius: 10px;
    border: none;
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    color: #0e7490;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: #15803d;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #b45309;
}

.log-container {
    background: #1e293b;
    border-radius: 10px;
    padding: 1rem;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
}

.log-line {
    color: #94a3b8;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.6;
}

.log-line.error {
    color: #ef4444;
}

.log-line.success {
    color: #22c55e;
}

.log-line.warning {
    color: #f59e0b;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.image-card {
    background: #f8fafc;
    border: 1px solid var(--admin-border);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.2s;
    cursor: pointer;
}

.image-card:hover {
    border-color: var(--admin-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.image-card.selected {
    border-color: var(--admin-danger);
    box-shadow: 0 0 12px rgba(239, 68, 68, 0.3);
}

.image-card .img-wrapper {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f5f9;
    position: relative;
}

.image-card .img-wrapper img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
}

.image-card .checkbox-wrapper {
    position: absolute;
    top: 4px;
    left: 4px;
}

.image-card .checkbox-wrapper input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.image-card .info {
    padding: 8px;
    font-size: 12px;
}

.image-card .info .filename {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--admin-text);
}

.image-card .info .meta {
    color: var(--admin-text-muted);
    font-size: 11px;
}

.pagination-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-top: 1px solid var(--admin-border);
    margin-top: 12px;
}

.pagination .page-link {
    color: var(--admin-text);
    border-color: var(--admin-border);
}

.pagination .page-link:hover {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: #fff;
}

.pagination .page-item.active .page-link {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.text-muted {
    color: var(--admin-text-muted) !important;
}

.project-card, .dataset-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover, .dataset-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.project-cover, .dataset-cover {
    height: 140px;
    object-fit: cover;
    border-radius: 12px 12px 0 0;
    background: linear-gradient(135deg, #e2e8f0 0%, #f8fafc 100%);
    max-width: 100%;
}

.card-text {
    color: var(--admin-text-muted) !important;
}

.btn-group .btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

@media (max-width: 992px) {
    .admin-sidebar {
        width: 80px;
    }
    
    .sidebar-brand span,
    .sidebar-nav .nav-link span,
    .sidebar-footer .nav-link span {
        display: none;
    }
    
    .sidebar-nav .nav-link {
        justify-content: center;
    }
    
    .admin-main {
        margin-left: 80px;
    }
    
    .language-switch {
        flex-direction: column;
    }
}

.action-btn {
    padding: 0.25rem 0.625rem;
    font-size: 0.8rem;
    border-radius: 6px;
    margin-right: 4px;
}

.result-badge-success {
    background: var(--admin-success);
    color: #fff;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
}

.result-badge-failed {
    background: var(--admin-danger);
    color: #fff;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
}

.confirm-badge-yes {
    background: #dbeafe;
    color: #2563eb;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
}

.confirm-badge-no {
    background: #fef3c7;
    color: #92400e;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
}

/* 训练历史页面 */
.training-records-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1.5rem;
}

.training-record-card {
    background: var(--admin-bg);
    border-radius: 12px;
    border: 1px solid var(--admin-border);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.training-record-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.training-record-header {
    padding: 1rem;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.training-record-thumbnail {
    height: 150px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.training-record-thumbnail img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.training-record-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    padding: 1rem;
}

.metric-mini {
    background: #f1f5f9;
    border-radius: 6px;
    padding: 0.5rem;
    text-align: center;
}

.metric-mini-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--admin-primary);
}

.metric-mini-label {
    font-size: 0.75rem;
    color: #64748b;
    margin-top: 0.25rem;
}

.training-record-actions {
    padding: 1rem;
    border-top: 1px solid var(--admin-border);
    display: flex;
    gap: 0.5rem;
}

.status-badge-running {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: #94a3b8;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* 骨骼点示意图 */
.skeleton-diagram-container {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    background: var(--admin-bg);
    border-radius: 12px;
    padding: 1rem;
    border: 1px solid var(--admin-border);
}

.skeleton-diagram {
    flex: 1;
    background: #fff;
    border-radius: 8px;
    padding: 0.5rem;
    position: relative;
}

.skeleton-diagram svg {
    width: 100%;
    height: auto;
    max-height: 200px;
}

.skeleton-diagram circle {
    cursor: pointer;
    transition: all 0.2s;
}

.skeleton-diagram circle:hover {
    r: 8;
}

.skeleton-diagram circle.highlighted {
    r: 10;
    stroke: #ff0000;
    stroke-width: 3;
}

.skeleton-diagram-title {
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 0.5rem;
    color: var(--admin-text);
}

.kp-tooltip {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    display: none;
}

/* 步骤骨骼点条件配置 */
.skeleton-condition-section {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px dashed var(--admin-border);
}

.skeleton-config {
    margin-top: 0.5rem;
}

.form-label-sm {
    font-size: 0.75rem;
    font-weight: 500;
    color: #64748b;
    margin-bottom: 0.25rem;
}

.dataset-binding-section {
    background: var(--admin-bg);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--admin-border);
}

.dataset-binding-section .form-select {
    max-width: 400px;
}

/* 训练页面 */
.train-log-container {
    height: 400px;
    overflow-y: auto;
    background: #1e293b;
    padding: 1rem;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.875rem;
    color: #e2e8f0;
    border-radius: 8px;
}

.train-log-line {
    white-space: pre-wrap;
    word-break: break-all;
}

.train-metrics-card {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1rem;
}

.train-progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
    margin: 1rem 0;
}

.train-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6 0%, #10b981 100%);
    transition: width 0.3s ease;
}

@media (max-width: 768px) {
    .training-records-grid {
        grid-template-columns: 1fr;
    }

    .skeleton-diagram-container {
        flex-direction: column;
    }

    .training-record-metrics {
        grid-template-columns: repeat(2, 1fr);
    }

    .train-log-container {
        height: 300px;
    }
}