:root {
    --primary: #4A6CF7;
    --primary-light: #6B8AFF;
    --primary-dark: #3A5BD9;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;
    --bg: #F3F4F6;
    --card: #FFFFFF;
    --text: #1F2937;
    --text-secondary: #6B7280;
    --border: #E5E7EB;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --radius: 8px;
    --radius-sm: 4px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

.page-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding: 12px 0;
}

.page-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.page-header .actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
    margin-bottom: 12px;
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.stat-cards {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.stat-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 14px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.danger .stat-value { color: var(--danger); }
.stat-card.info .stat-value { color: var(--info); }

.toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.toolbar .search-box {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 0 0 auto;
}

.toolbar .search-box input {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    width: 180px;
    outline: none;
    transition: border-color 0.2s;
}

.toolbar .search-box input:focus {
    border-color: var(--primary);
}

.toolbar select {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    outline: none;
    background: white;
    cursor: pointer;
}

.toolbar select:focus {
    border-color: var(--primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px 14px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    line-height: 1.4;
}

.btn:hover { opacity: 0.85; }
.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--primary); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-info { background: var(--info); color: #fff; }
.btn-default { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-xs { padding: 2px 8px; font-size: 11px; }

.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

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

table th, table td {
    padding: 8px 10px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

table th {
    background: var(--bg);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
}

table tr:hover {
    background: #F9FAFB;
}

.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
}

.tag-success { background: #D1FAE5; color: #065F46; }
.tag-warning { background: #FEF3C7; color: #92400E; }
.tag-danger { background: #FEE2E2; color: #991B1B; }
.tag-info { background: #DBEAFE; color: #1E40AF; }
.tag-default { background: var(--bg); color: var(--text-secondary); }

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 12px;
    padding: 8px 0;
}

.pagination .page-btn {
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--card);
    cursor: pointer;
    font-size: 12px;
    color: var(--text);
    transition: all 0.2s;
}

.pagination .page-btn:hover { border-color: var(--primary); color: var(--primary); }
.pagination .page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .page-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.pagination .page-info { font-size: 12px; color: var(--text-secondary); margin: 0 8px; }
.pagination .page-current { font-size: 12px; color: var(--text); margin: 0 8px; font-weight: 500; }

.form-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.form-group label {
    flex-shrink: 0;
    width: 80px;
    font-size: 13px;
    color: var(--text-secondary);
    text-align: right;
}

.form-group input,
.form-group select,
.form-group textarea {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 90%;
    max-width: 480px;
    max-height: 80vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.2s;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 15px;
    font-weight: 600;
}

.modal-close {
    width: 24px; height: 24px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 18px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.modal-close:hover { background: var(--bg); }

.modal-body { padding: 16px; }

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
}

.toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 13px;
    box-shadow: var(--shadow-md);
    animation: toastIn 0.3s ease;
    max-width: 320px;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-warning { background: var(--warning); }
.toast-info { background: var(--info); }

@keyframes toastIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state .empty-icon {
    font-size: 36px;
    margin-bottom: 8px;
}

.empty-state .empty-text {
    font-size: 14px;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.loading::after {
    content: '';
    width: 24px; height: 24px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.copy-btn {
    cursor: pointer;
    color: var(--primary);
    font-size: 12px;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--primary);
    background: none;
    transition: all 0.2s;
}

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

.masked-text {
    cursor: help;
    border-bottom: 1px dashed var(--text-secondary);
}

.tab-group {
    display: flex;
    gap: 0;
}

.tab-btn {
    padding: 6px 16px;
    border: 1px solid var(--border);
    background: var(--card);
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.tab-btn:first-child {
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.tab-btn:last-child {
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    border-left: none;
}

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

.tab-btn:hover:not(.active) {
    background: var(--bg);
}

.nav-bar {
    background: var(--card);
    box-shadow: var(--shadow);
    padding: 0 16px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 48px;
}

.nav-bar .nav-brand {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}

.nav-bar .nav-links {
    display: flex;
    gap: 4px;
}

.nav-bar .nav-links a {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.nav-bar .nav-links a:hover,
.nav-bar .nav-links a.active {
    background: var(--primary);
    color: #fff;
}

.nav-bar .nav-user {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.nav-bar .nav-menu-btn {
    display: none;
}

.nav-bar .nav-menu-btn svg {
    display: block;
}

.nav-mobile-menu {
    display: none;
}

.nav-mobile-menu.active {
    display: none;
}

.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 32px;
    width: 100%;
    max-width: 380px;
}

.login-card .login-title {
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 24px;
}

.login-card .form-group {
    flex-direction: column;
    align-items: stretch;
}

.login-card .form-group label {
    width: auto;
    text-align: left;
    margin-bottom: 4px;
}

.login-card .form-group input {
    width: 100%;
    padding: 8px 12px;
}

.login-card .btn-login {
    width: 100%;
    padding: 10px;
    font-size: 14px;
    margin-top: 8px;
}

.chart-container {
    position: relative;
    width: 100%;
    height: 240px;
}

.detail-row {
    display: flex;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.detail-row:last-child { border-bottom: none; }

.detail-row .detail-label {
    flex-shrink: 0;
    width: 90px;
    color: var(--text-secondary);
}

.detail-row .detail-value {
    flex: 1;
    color: var(--text);
    word-break: break-all;
}

@media (max-width: 768px) {
    .page-wrapper { padding: 10px; }
    .stat-cards { grid-template-columns: repeat(2, 1fr) !important; }
    .toolbar { flex-direction: column; align-items: stretch; gap: 8px; }
    .toolbar .search-box { width: 100%; }
    .toolbar .search-box input { width: 100%; flex: 1; }
    .toolbar .btn-group { display: flex; gap: 8px; }
    .toolbar .btn-group .btn { flex: 1; }
    .nav-bar { flex-wrap: wrap; height: auto; padding: 0; }
    .nav-bar .nav-brand { padding: 10px 16px; }
    .nav-bar .nav-user { padding: 10px 16px; }
    .nav-bar .nav-links { display: flex; order: 3; width: 100%; border-top: 1px solid var(--border); overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .nav-bar .nav-links a { white-space: nowrap; padding: 10px 14px; font-size: 13px; flex-shrink: 0; }
    .nav-bar .nav-menu-btn { display: none; }
    .form-group { flex-direction: column; align-items: stretch; }
    .form-group label { width: auto; text-align: left; }
    .chart-grid { grid-template-columns: 1fr !important; }
}

@media (min-width: 769px) {
    .nav-bar .nav-menu-btn { display: none; }
}