:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --success: #16a34a;
    --success-light: #f0fdf4;
    --danger: #dc2626;
    --danger-light: #fef2f2;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --info: #0ea5e9;
    --info-light: #f0f9ff;
    --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;
    --white: #ffffff;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 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);
}

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

body {
    font-family: var(--font);
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    font-size: 14px;
}

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

a:hover {
    text-decoration: underline;
}

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

.sidebar {
    width: 260px;
    background: var(--gray-900);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.sidebar-header small {
    color: var(--gray-400);
    font-size: 12px;
}

.sidebar-nav {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    color: var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s;
    margin-bottom: 2px;
}

.sidebar-nav a:hover {
    background: rgba(255,255,255,0.1);
    color: var(--white);
    text-decoration: none;
}

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

.sidebar-nav a svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-footer a {
    color: var(--gray-400);
    font-size: 13px;
}

.sidebar-footer a:hover {
    color: var(--white);
    text-decoration: none;
}

.main {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

.topbar {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.content {
    padding: 32px;
    flex: 1;
}

.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.stat-card .stat-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
}

.stat-card .stat-sub {
    font-size: 12px;
    color: var(--gray-400);
    margin-top: 4px;
}

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

table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-100);
    font-size: 14px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font);
    text-decoration: none;
    line-height: 1.4;
}

.btn:hover {
    text-decoration: none;
}

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

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

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

.btn-success:hover {
    background: #15803d;
    color: var(--white);
}

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

.btn-danger:hover {
    background: #b91c1c;
    color: var(--white);
}

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

.btn-outline {
    background: transparent;
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: 4px 10px;
    font-size: 13px;
}

.btn-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger);
}

.badge-warning {
    background: var(--warning-light);
    color: #b45309;
}

.badge-info {
    background: var(--info-light);
    color: var(--info);
}

.badge-gray {
    background: var(--gray-100);
    color: var(--gray-600);
}

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

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: var(--font);
    color: var(--gray-800);
    background: var(--white);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.form-check label {
    margin-bottom: 0;
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-success {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid #bbf7d0;
}

.alert-danger {
    background: var(--danger-light);
    color: var(--danger);
    border: 1px solid #fecaca;
}

.alert-warning {
    background: var(--warning-light);
    color: #b45309;
    border: 1px solid #fde68a;
}

.alert-info {
    background: var(--info-light);
    color: var(--info);
    border: 1px solid #bae6fd;
}

.token-display {
    background: var(--gray-900);
    color: var(--green-400);
    padding: 16px;
    border-radius: var(--radius);
    font-family: 'Courier New', monospace;
    font-size: 13px;
    word-break: break-all;
    position: relative;
}

.token-display .copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255,255,255,0.1);
    border: none;
    color: var(--white);
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.token-display .copy-btn:hover {
    background: rgba(255,255,255,0.2);
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-item .info-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-item .info-value {
    font-size: 15px;
    color: var(--gray-800);
    font-weight: 500;
}

.filter-bar {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.filter-bar .form-group {
    margin-bottom: 0;
    min-width: 150px;
}

.filter-bar input,
.filter-bar select {
    padding: 8px 12px;
    font-size: 13px;
}

.pagination {
    display: flex;
    gap: 4px;
    justify-content: center;
    align-items: center;
    margin-top: 24px;
}

.pagination a,
.pagination span {
    padding: 6px 12px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
}

.pagination a {
    background: var(--white);
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
}

.pagination a:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    text-decoration: none;
}

.pagination .active {
    background: var(--primary);
    color: var(--white);
    border: 1px solid var(--primary);
}

.pagination .disabled {
    color: var(--gray-300);
    pointer-events: none;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-400);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 15px;
}

.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--gray-50);
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 40px;
}

.login-card .logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-card .logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
}

.login-card .logo p {
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 4px;
}

.detail-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.divider {
    height: 1px;
    background: var(--gray-200);
    margin: 24px 0;
}

.text-muted {
    color: var(--gray-400);
    font-size: 13px;
}

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

.mb-4 {
    margin-bottom: 16px;
}

.mb-6 {
    margin-bottom: 24px;
}

.mt-4 {
    margin-top: 16px;
}

.flex {
    display: flex;
}

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

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: 8px;
}

.gap-4 {
    gap: 16px;
}

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main {
        margin-left: 0;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .content {
        padding: 16px;
    }
    .topbar {
        padding: 12px 16px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}