*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --sidebar-bg: #0f172a; --sidebar-border: #1e293b; --sidebar-text: #94a3b8; --sidebar-active: #4f46e5; --sidebar-hover: #1e293b; --sidebar-width: 240px;
    --body-bg: #f1f5f9; --card-bg: #ffffff; --card-border: #e2e8f0; --card-shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --font: 'Inter', system-ui, -apple-system, sans-serif; --text-primary: #0f172a; --text-secondary: #64748b; --text-muted: #94a3b8;
    --primary: #4f46e5; --primary-dark: #4338ca; --primary-light: #eef2ff; --success: #10b981; --success-light: #d1fae5;
    --warning: #f59e0b; --warning-light: #fef3c7; --danger: #ef4444; --danger-light: #fee2e2; --info: #3b82f6; --info-light: #dbeafe;
    --radius: 8px; --radius-lg: 12px; --transition: 150ms ease;
}
html, body { height: 100%; font-family: var(--font); font-size: 14px; color: var(--text-primary); background: var(--body-bg); }
a { color: inherit; text-decoration: none; }
.app-layout { display: flex; min-height: 100vh; }
.main-content { flex: 1; margin-left: var(--sidebar-width); display: flex; flex-direction: column; min-width: 0; }
.sidebar { position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh; background: var(--sidebar-bg); border-right: 1px solid var(--sidebar-border); display: flex; flex-direction: column; z-index: 100; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 20px 16px; border-bottom: 1px solid var(--sidebar-border); }
.sidebar-brand-name { display: block; font-size: 15px; font-weight: 700; color: #f8fafc; line-height: 1.2; }
.sidebar-brand-sub { display: block; font-size: 11px; color: var(--sidebar-text); line-height: 1.4; }
.sidebar-nav { flex: 1; padding: 12px 8px; overflow-y: auto; }
.sidebar-nav ul { display: flex; flex-direction: column; gap: 2px; }
.sidebar-link { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: var(--radius); color: var(--sidebar-text); font-size: 13.5px; font-weight: 500; transition: all var(--transition); }
.sidebar-link:hover { background: var(--sidebar-hover); color: #e2e8f0; }
.sidebar-link.active { background: var(--sidebar-active); color: #ffffff; }
.sidebar-footer { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px; border-top: 1px solid var(--sidebar-border); }
.sidebar-user { display: flex; align-items: center; gap: 9px; min-width: 0; }
.sidebar-user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--sidebar-active); color: white; font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.sidebar-user-name { font-size: 13px; font-weight: 600; color: #e2e8f0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-role { font-size: 11px; color: var(--sidebar-text); }
.sidebar-logout { color: var(--sidebar-text); padding: 6px; border-radius: var(--radius); transition: all var(--transition); flex-shrink: 0; }
.sidebar-logout:hover { color: var(--danger); background: rgba(239,68,68,.1); }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 16px 28px; background: var(--card-bg); border-bottom: 1px solid var(--card-border); position: sticky; top: 0; z-index: 50; }
.topbar-title { font-size: 18px; font-weight: 700; color: var(--text-primary); }
.topbar-subtitle { font-size: 13px; color: var(--text-secondary); margin-top: 1px; }
.page-content { padding: 28px; flex: 1; }
.card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); box-shadow: var(--card-shadow); }
.card-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--card-border); }
.card-title { font-size: 15px; font-weight: 600; color: var(--text-primary); }
.card-body { padding: 22px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; margin-bottom: 28px; }
.stat-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); box-shadow: var(--card-shadow); padding: 20px 22px; display: flex; align-items: center; gap: 16px; }
.stat-card-icon { width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.stat-card-icon.indigo { background: var(--primary-light); color: var(--primary); }
.stat-card-icon.green { background: var(--success-light); color: var(--success); }
.stat-card-icon.amber { background: var(--warning-light); color: var(--warning); }
.stat-card-icon.blue { background: var(--info-light); color: var(--info); }
.stat-card-value { font-size: 26px; font-weight: 700; color: var(--text-primary); line-height: 1; }
.stat-card-label { font-size: 12.5px; color: var(--text-secondary); margin-top: 4px; }
.table-wrapper { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--card-border); box-shadow: var(--card-shadow); }
table { width: 100%; border-collapse: collapse; background: var(--card-bg); font-size: 13.5px; }
thead th { padding: 11px 16px; text-align: left; font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--text-secondary); background: #f8fafc; border-bottom: 1px solid var(--card-border); white-space: nowrap; }
tbody tr { border-bottom: 1px solid #f1f5f9; transition: background var(--transition); }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: #f8fafc; }
tbody td { padding: 11px 16px; color: var(--text-primary); }
.badge { display: inline-flex; align-items: center; padding: 3px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 600; white-space: nowrap; }
.badge-success { background: var(--success-light); color: #065f46; }
.badge-danger { background: var(--danger-light); color: #991b1b; }
.badge-warning { background: var(--warning-light); color: #92400e; }
.badge-info { background: var(--info-light); color: #1e40af; }
.badge-muted { background: #f1f5f9; color: var(--text-secondary); }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: var(--radius); font-size: 13.5px; font-weight: 500; border: 1px solid transparent; transition: all var(--transition); white-space: nowrap; text-decoration: none; }
.btn-primary { background: var(--primary); color: white; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-secondary { background: white; color: var(--text-primary); border-color: var(--card-border); }
.btn-secondary:hover { background: #f8fafc; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-block { width: 100%; justify-content: center; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-primary); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 9px 12px; border: 1px solid var(--card-border); border-radius: var(--radius); font-family: var(--font); font-size: 13.5px; color: var(--text-primary); background: white; transition: all var(--transition); outline: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,.12); }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.alert { padding: 11px 14px; border-radius: var(--radius); font-size: 13.5px; margin-bottom: 16px; border: 1px solid transparent; }
.alert-error { background: var(--danger-light); color: #991b1b; border-color: #fca5a5; }
.alert-success { background: var(--success-light); color: #065f46; border-color: #6ee7b7; }
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 16px; opacity: 0; pointer-events: none; transition: opacity 200ms ease; }
.modal-overlay.open { opacity: 1; pointer-events: auto; }
.modal { background: white; border-radius: var(--radius-lg); box-shadow: 0 20px 60px rgba(0,0,0,.2); width: 100%; max-width: 520px; transform: translateY(16px); transition: transform 200ms ease; }
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--card-border); }
.modal-title { font-size: 15px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 20px; line-height: 1; padding: 2px 6px; border-radius: 4px; transition: all var(--transition); }
.modal-close:hover { color: var(--text-primary); background: #f1f5f9; }
.modal-body { padding: 22px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 22px; border-top: 1px solid var(--card-border); background: #f8fafc; border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.search-box { display: flex; align-items: center; gap: 8px; background: white; border: 1px solid var(--card-border); border-radius: var(--radius); padding: 8px 12px; min-width: 240px; transition: all var(--transition); }
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,.12); }
.search-box input { border: none; outline: none; font-family: var(--font); font-size: 13.5px; color: var(--text-primary); background: transparent; width: 100%; }
.pagination { display: flex; align-items: center; gap: 4px; padding: 16px 22px; border-top: 1px solid var(--card-border); }
.page-btn { min-width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--card-border); border-radius: var(--radius); background: white; color: var(--text-primary); font-size: 13px; padding: 0 8px; transition: all var(--transition); }
.page-btn:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
.page-btn.active { background: var(--primary); border-color: var(--primary); color: white; }
.page-btn.disabled { opacity: .4; pointer-events: none; }
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%); padding: 20px; }
.login-wrapper { width: 100%; max-width: 400px; }
.login-card { background: white; border-radius: var(--radius-lg); box-shadow: 0 25px 80px rgba(0,0,0,.4); overflow: hidden; }
.login-header { text-align: center; padding: 36px 32px 24px; background: var(--primary-light); border-bottom: 1px solid #c7d2fe; }
.login-logo { margin-bottom: 12px; }
.login-brand { font-size: 22px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.login-subtitle { font-size: 13px; color: var(--text-secondary); }
.login-form { padding: 28px 32px 20px; }
.login-footer { text-align: center; font-size: 12px; color: var(--text-muted); padding: 14px 32px 24px; }
.text-muted { color: var(--text-muted); }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.mb-0 { margin-bottom: 0; }
.font-mono { font-family: monospace; font-size: 12.5px; }
.actions-cell { display: flex; gap: 6px; align-items: center; }
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); transition: transform 200ms ease; }
    .main-content { margin-left: 0; }
    .page-content { padding: 16px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .form-grid-2 { grid-template-columns: 1fr; }
}