* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #10b981;
    --danger: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --sidebar-width: 240px;
    --sidebar-collapsed: 64px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.5;
}

#app {
    display: flex;
    min-height: 100vh;
}

/* Login Page */
.login-page {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 12px;
    width: 360px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.login-box h2 {
    text-align: center;
    font-size: 24px;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.login-subtitle {
    text-align: center;
    color: var(--gray-500);
    font-size: 14px;
    margin-bottom: 32px;
}

.login-box .form-group {
    margin-bottom: 20px;
}

.login-box .form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--gray-700);
}

.login-box .form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.login-box .form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.btn-block {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    margin-top: 8px;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--gray-900);
    color: white;
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.logo {
    padding: 20px;
    font-size: 20px;
    font-weight: 600;
    border-bottom: 1px solid var(--gray-700);
    text-align: center;
}

.nav-menu {
    flex: 1;
    padding: 16px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--gray-400);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-item:hover {
    background: var(--gray-800);
    color: white;
}

.nav-item.active {
    background: var(--primary);
    color: white;
}

.nav-item svg {
    flex-shrink: 0;
}

.collapse-btn {
    padding: 16px;
    background: none;
    border: none;
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
    cursor: pointer;
    display: flex;
    justify-content: center;
}

.collapse-btn:hover {
    color: white;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left 0.3s ease;
}

.sidebar.collapsed + .main-content {
    margin-left: var(--sidebar-collapsed);
}

.header {
    background: white;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header h1 {
    font-size: 20px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.time {
    color: var(--gray-500);
    font-size: 14px;
}

.content {
    padding: 24px;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.stat-card {
    background: white;
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--gray-900);
}

.stat-label {
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 4px;
}

/* Toolbar */
.toolbar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.search-input {
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    width: 240px;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn:hover {
    background: var(--gray-300);
}

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

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

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

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

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

.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
}

/* Table */
.table-container {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.data-table th {
    background: var(--gray-50);
    font-weight: 600;
    font-size: 13px;
    color: var(--gray-600);
    text-transform: uppercase;
}

.data-table tr:hover {
    background: var(--gray-50);
}

.data-table .openid {
    font-family: monospace;
    font-size: 12px;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.thumb {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
}

.status {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

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

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

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
    padding: 16px;
}

.pagination span {
    color: var(--gray-600);
    font-size: 14px;
}

/* Config */
.config-list {
    background: white;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.config-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
}

.config-item:last-child {
    border-bottom: none;
}

.config-info {
    flex: 1;
}

.config-key {
    font-weight: 600;
    font-family: monospace;
}

.config-desc {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 2px;
}

.config-input {
    width: 120px;
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    text-align: center;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal-content {
    background: white;
    border-radius: 8px;
    width: 480px;
    max-width: 90%;
    max-height: 90vh;
    overflow: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
}

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

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--gray-400);
    cursor: pointer;
}

.close-btn:hover {
    color: var(--gray-600);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 20px;
    border-top: 1px solid var(--gray-200);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--gray-700);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Image Preview */
.image-preview {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    cursor: pointer;
}

.image-preview img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0;
        --sidebar-collapsed: 0;
    }

    .sidebar {
        width: 240px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .sidebar .nav-item span {
        display: inline;
    }
    
    .sidebar.collapsed {
        width: 240px;
    }
    
    .main-content {
        margin-left: 0 !important;
        width: 100%;
    }
    
    .header {
        padding: 12px 16px;
    }
    
    .header h1 {
        font-size: 16px;
    }
    
    .time {
        display: none;
    }
    
    .content {
        padding: 16px;
    }
    
    .toolbar {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .toolbar .btn {
        padding: 6px 10px;
        font-size: 12px;
    }
    
    .search-input {
        width: 100%;
        order: -1;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-value {
        font-size: 24px;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    .data-table {
        min-width: 600px;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px 10px;
        font-size: 13px;
    }
    
    .thumb {
        width: 36px;
        height: 36px;
    }
    
    .btn-sm {
        padding: 3px 6px;
        font-size: 11px;
    }
    
    .pagination {
        padding: 12px;
        gap: 8px;
    }
    
    .pagination span {
        font-size: 12px;
    }
    
    .config-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .config-input {
        width: 100%;
    }
    
    .modal-content {
        width: 95%;
        margin: 16px;
    }
    
    .modal-body {
        padding: 16px;
    }
    
    .login-box {
        width: 90%;
        padding: 24px;
    }
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--gray-600);
}

.mobile-menu-btn svg {
    width: 24px;
    height: 24px;
}

/* 移动端遮罩 */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

.mobile-overlay.show {
    display: block;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .collapse-btn {
        display: none;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .toolbar .btn {
        flex: 1;
        text-align: center;
    }
    
    .data-table {
        min-width: 500px;
    }
    
    .header-actions .btn {
        padding: 6px 10px;
        font-size: 12px;
    }
}