/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3b82f6;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --bg-color: #f9fafb;
    --surface-color: #ffffff;
    --border-color: #e5e7eb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部 */
.header {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
    stroke-width: 2;
}

/* 主内容 */
.main-content {
    flex: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* 工具栏 */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-primary:hover {
    background: #2563eb;
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

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

.btn-success:hover {
    background: #059669;
}

.btn-warning {
    background: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background: #d97706;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-info {
    background: var(--info-color);
    color: white;
}

.btn-info:hover {
    background: #0891b2;
}

/* 过滤栏 */
.filter-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--surface-color);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
}

.filter-group {
    display: flex;
    gap: 0.75rem;
    flex: 1;
    max-width: 600px;
}

.filter-input,
.filter-select {
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.filter-input {
    flex: 1;
}

.filter-input:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.stats {
    display: flex;
    gap: 1.5rem;
}

.stat-item {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-item strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* 表格 */
.table-container {
    flex: 1;
    background: var(--surface-color);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.accounts-table {
    width: 100%;
    border-collapse: collapse;
}

.accounts-table thead {
    background: #f3f4f6;
    position: sticky;
    top: 0;
    z-index: 10;
}

.accounts-table th {
    padding: 1rem;
    text-align: left;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
}

.accounts-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s;
}

.accounts-table tbody tr:hover {
    background: #f9fafb;
}

.accounts-table td {
    padding: 1rem;
    font-size: 0.875rem;
}

.accounts-table input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* 状态标签 */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-active {
    background: #d1fae5;
    color: #065f46;
}

.status-error {
    background: #fee2e2;
    color: #991b1b;
}

.status-disabled {
    background: #e5e7eb;
    color: #374151;
}

.status-401 {
    background: #fef3c7;
    color: #92400e;
}

.status-quota {
    background: #dbeafe;
    color: #1e40af;
}

/* 空状态 */
.empty-state {
    height: 400px;
}

.empty-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
}

.empty-content svg {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    stroke-width: 1.5;
    opacity: 0.5;
}

.empty-content p {
    margin: 0.25rem 0;
}

.empty-hint {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* 状态栏 */
.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: var(--surface-color);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    font-size: 0.875rem;
}

.brand {
    color: var(--text-secondary);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface-color);
    border-radius: 1rem;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
}

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

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* 表单 */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* 加载动画 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-spinner {
    text-align: center;
    color: white;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

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

#loadingText {
    font-size: 1rem;
    margin-top: 1rem;
}

/* 响应式 */
@media (max-width: 1024px) {
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-left,
    .toolbar-right {
        justify-content: center;
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        max-width: none;
    }
    
    .stats {
        justify-content: space-around;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
    }
    
    .header-content {
        padding: 1rem;
    }
    
    .header h1 {
        font-size: 1.25rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .accounts-table {
        font-size: 0.75rem;
    }
    
    .accounts-table th,
    .accounts-table td {
        padding: 0.75rem 0.5rem;
    }
}