/* 全局樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #5BA5B2;
    --primary-hover: #fff;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #FAFFFF;
    --bg-secondary: #EDFBFF;
    --bg-tertiary: #334155;
    --text-primary: #5BA5B2;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: rgba(91, 165, 178, 0.50);
;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    /* background-color: var(--bg-color); */
    background-color: #FAFFFF;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page.hidden {
    display: none;
}

/* 按鈕樣式 */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
    color: #5BA5B2;
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
}

.btn-text {
    background: none;
    border: none;
    /* color: var(--text-secondary); */
    color: rgba(0, 0, 0, 0.50);
    cursor: pointer;
    padding: 5px 10px;
    font-size: 14px;
    transition: color 0.2s;
}

.btn-text:hover {
    color: var(--text-primary);
}

.btn-copy {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.btn-copy:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
}

/* 表單樣式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    /* color: var(--text-secondary); */
    color: #000;
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

/* 錯誤消息 */
.error-message {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
    padding: 12px;
    border-radius: 6px;
    margin-top: 15px;
    font-size: 14px;
}

.success-message {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
    padding: 12px;
    border-radius: 6px;
    margin-top: 15px;
    font-size: 14px;
}

/* 模態框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

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

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.modal-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
}

.warning-text {
    color: var(--warning-color);
    margin-bottom: 15px;
    font-size: 14px;
}

/* 代碼顯示 */
code {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    background-color: var(--bg-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}

.api-key-display {
    display: flex;
    gap: 10px;
    align-items: center;
}

.api-key-display code {
    flex: 1;
    padding: 10px;
    word-break: break-all;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
}

/* 工具類 */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

/* ============ 邮箱验证页面 ============ */
.verify-email-container {
    padding: 30px;
    text-align: center;
}

.verify-header {
    margin-bottom: 30px;
}

.verify-icon {
    font-size: 64px;
    display: block;
    margin-bottom: 15px;
}

.verify-header h2 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.verify-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

.code-input-group {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 30px 0;
}

.code-input {
    width: 50px;
    height: 60px;
    font-size: 24px;
    text-align: center;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: all 0.2s;
}

.code-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(91, 165, 178, 0.2);
}

.resend-section {
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

.resend-section button {
    margin-left: 5px;
}

.resend-section button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============ 验证码输入 ============ */
.captcha-input-group {
    display: flex;
    gap: 10px;
    align-items: center;
}

.captcha-img {
    height: 40px;
    border-radius: 4px;
    cursor: pointer;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.captcha-hint {
    font-size: 12px;
    color: var(--warning-color);
    margin-top: 5px;
}

/* ============ 加载状态 ============ */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 15px;
    z-index: 100;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-text {
    color: var(--text-secondary);
    font-size: 14px;
}

.page-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    gap: 15px;
}

/* ============ QPU管理页面 ============ */
.qpu-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 32px;
    font-weight: 600;
    color: var(--primary-color);
}

.qpu-list-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.list-header-with-search {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.search-box {
    display: flex;
    gap: 10px;
}

.search-box input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 14px;
    min-width: 200px;
}

.qpu-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.qpu-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    transition: all 0.2s;
}

.qpu-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.qpu-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.qpu-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.qpu-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.qpu-status {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.qpu-status.status-active {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.qpu-status.status-maintenance {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
}

.qpu-status.status-offline {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

/* 队列状态徽章（显示在 QPU 卡片头部） */
.queue-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 6px;
    white-space: nowrap;
}

.queue-badge-running {
    background-color: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.3);
    animation: pulse-running 2s ease-in-out infinite;
}

.queue-badge-queued {
    background-color: rgba(245, 158, 11, 0.15);
    color: #d97706;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.queue-badge-idle {
    background-color: rgba(16, 185, 129, 0.1);
    color: #6b7280;
    border: 1px solid rgba(16, 185, 129, 0.2);
    font-weight: 400;
}

@keyframes pulse-running {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.65; }
}

/* 任务队列详情行内的小标签 */
.queue-stat-running {
    display: inline-block;
    padding: 2px 7px;
    border-radius: 8px;
    background-color: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
    font-size: 12px;
    font-weight: 600;
    margin-right: 4px;
}

.queue-stat-queued {
    display: inline-block;
    padding: 2px 7px;
    border-radius: 8px;
    background-color: rgba(245, 158, 11, 0.15);
    color: #d97706;
    font-size: 12px;
    font-weight: 600;
    margin-right: 4px;
}

.queue-stat-idle {
    color: #9ca3af;
    font-size: 12px;
}

.qpu-actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn-icon:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
}

.btn-icon.btn-danger:hover {
    background-color: rgba(239, 68, 68, 0.2);
    border-color: var(--danger-color);
}

.qpu-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-bottom: 10px;
}

.detail-row {
    display: flex;
    gap: 8px;
    font-size: 14px;
}

.detail-label {
    color: var(--text-muted);
}

.detail-value {
    color: var(--text-primary);
    font-weight: 500;
}

.qpu-description {
    font-size: 14px;
    color: var(--text-secondary);
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

/* ============ 用量统计页面 ============ */
.usage-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.overview-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.overview-icon {
    font-size: 36px;
}

.overview-info {
    flex: 1;
}

.overview-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.overview-value {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
}

.usage-filter {
    display: flex;
    gap: 15px;
    align-items: flex-end;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-group label {
    font-size: 14px;
    color: var(--text-secondary);
}

.filter-group select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    min-width: 150px;
}

.usage-charts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.chart-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.chart-container h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.chart-container canvas {
    max-height: 250px;
}

.usage-details {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.usage-details h3 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.usage-list-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.usage-item {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.usage-main {
    flex: 1;
}

.usage-task-id {
    font-family: monospace;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.usage-task-type {
    display: flex;
    gap: 8px;
    align-items: center;
}

.type-badge {
    background-color: rgba(91, 165, 178, 0.2);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.status-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.status-badge.status-success {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.status-badge.status-error {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.status-badge.status-running {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
}

.status-badge.status-pending {
    background-color: rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
}

.usage-details-list {
    display: flex;
    gap: 20px;
}

.detail-item {
    font-size: 13px;
}

/* ============ 分页 ============ */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.pagination-controls {
    display: flex;
    gap: 5px;
    align-items: center;
}

.btn-page {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    min-width: 36px;
    transition: all 0.2s;
}

.btn-page:hover:not(.disabled):not(.active) {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
}

.btn-page.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.btn-page.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-ellipsis {
    color: var(--text-muted);
    padding: 0 5px;
}

/* ============ Toast消息 ============ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px 20px;
    min-width: 250px;
    box-shadow: var(--shadow-lg);
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-success {
    border-left: 4px solid var(--success-color);
}

.toast-error {
    border-left: 4px solid var(--danger-color);
}

.toast-warning {
    border-left: 4px solid var(--warning-color);
}

.toast-info {
    border-left: 4px solid var(--primary-color);
}

/* ============ 表单行布局 ============ */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 5px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.modal-large {
    max-width: 700px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-large .modal-body {
    overflow-y: auto;
    flex: 1;
}

/* ============ 空状态 ============ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 14px;
}

/* ============ Grid拓扑自动生成区 ============ */
.topology-autogen {
    margin-top: 10px;
    padding: 10px 12px;
    background-color: var(--bg-color);
    border: 1px dashed var(--border-color);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.autogen-inputs {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.autogen-inputs label {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.autogen-inputs input[type="number"] {
    width: 60px;
    padding: 5px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 13px;
    text-align: center;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
}

/* ============ QPU性能指标显示 ============ */
.properties-update-time {
    color: var(--primary-color);
    font-size: 13px;
}

/* ============ 拓扑图按钮 ============ */
.btn-topology {
    background-color: rgba(91, 165, 178, 0.12);
    border-color: rgba(91, 165, 178, 0.4);
}
.btn-topology:hover {
    background-color: rgba(91, 165, 178, 0.28);
    border-color: var(--primary-color);
}

/* ============ 拓扑图模态框 ============ */
.modal-topology {
    max-width: 860px;
    width: 95%;
    max-height: 92vh;
    display: flex;
    flex-direction: column;
}

.modal-topology .modal-body {
    overflow-y: auto;
    flex: 1;
    padding: 16px 20px 20px;
}

.topology-modal-body {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 模态框标题区 */
.topology-modal-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

#refresh-qpu-properties-btn {
    margin-left: 4px;
}

.topology-qpu-name-badge {
    display: inline-block;
    background-color: rgba(91, 165, 178, 0.15);
    color: var(--primary-color);
    border: 1px solid rgba(91, 165, 178, 0.4);
    border-radius: 14px;
    padding: 2px 12px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* 各节标题 */
.topology-section {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}

.topology-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    letter-spacing: 0.3px;
}

/* 信息栏 */
.topology-info-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.topology-metric-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.topology-metric-control {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.topology-metric-control label {
    font-size: 12px;
    color: var(--text-muted);
    margin: 0;
}

.topology-metric-control select {
    width: 100%;
    min-height: 34px;
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 13px;
}

.topology-metric-control select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.topology-colorbar-wrap {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 8px;
}

.topology-colorbar {
    height: 10px;
    border-radius: 999px;
    border: 1px solid rgba(91, 165, 178, 0.35);
    background: #d6e4ea;
}

.topology-colorbar-label {
    font-size: 11px;
    color: var(--text-muted);
    min-width: 52px;
    text-align: center;
    white-space: nowrap;
}

.topo-info-tag {
    display: inline-block;
    background-color: rgba(91, 165, 178, 0.12);
    color: var(--primary-color);
    border: 1px solid rgba(91, 165, 178, 0.3);
    border-radius: 4px;
    padding: 2px 10px;
    font-size: 12px;
}

/* SVG 容器 */
.topology-svg-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: auto;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* SVG 本体 */
.topology-svg {
    display: block;
    width: 100%;
    height: auto;
    min-height: 140px;
    padding: 8px;
    box-sizing: border-box;
}

/* 耦合线 */
.topo-coupler-line {
    stroke: var(--border-color);
    stroke-width: 2.5;
    stroke-linecap: round;
    cursor: help;
}

/* 比特圆 */
.topo-qubit-group .topo-qubit-circle {
    fill: var(--primary-color);
    stroke: #fff;
    stroke-width: 2;
    filter: url(#topo-qubit-shadow);
    transition: fill 0.15s, r 0.15s;
}

.topo-qubit-group {
    cursor: help;
}

.topo-qubit-group:hover .topo-qubit-circle {
    fill: #3d8a96;
    r: 22;
}

/* 比特标签 */
.topo-qubit-label {
    fill: #fff;
    font-family: -apple-system, 'Segoe UI', sans-serif;
    font-weight: 600;
    text-anchor: middle;
    dominant-baseline: middle;
    pointer-events: none;
    user-select: none;
}

/* ============ 性能指标只读表格 ============ */
.props-meta {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.props-meta strong {
    color: var(--primary-color);
}

.props-sub-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.props-table-wrap {
    overflow-x: auto;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.props-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.props-table thead {
    background-color: rgba(91, 165, 178, 0.1);
}

.props-table th {
    padding: 8px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.props-table td {
    padding: 7px 12px;
    border-bottom: 1px solid rgba(91, 165, 178, 0.12);
    color: var(--text-primary);
}

.props-table tbody tr:last-child td {
    border-bottom: none;
}

.props-table tbody tr:hover td {
    background-color: rgba(91, 165, 178, 0.06);
}

.topology-properties-content {
    max-height: 300px;
    overflow-y: auto;
}

/* ============ 账单筛选栏 ============ */
.bills-filter-bar {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: 20px;
    padding: 16px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

.filter-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.filter-item label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.filter-item select,
.filter-item input[type="date"] {
    padding: 7px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 13px;
    min-width: 120px;
    transition: border-color 0.2s;
}

.filter-item select:focus,
.filter-item input[type="date"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

.filter-item.search-item {
    flex: 1;
    min-width: 200px;
}

/* ============ 页面 header 操作按钮区 ============ */
.page-header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* 刷新按钮 */
.refresh-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 7px 14px;
    font-size: 13px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.refresh-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    background-color: rgba(91, 165, 178, 0.1);
}

.refresh-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}