* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: linear-gradient(135deg, #1a1c2e 0%, #2d1f3d 50%, #1a2a4a 100%); min-height: 100vh; }
.container { max-width: 1200px; margin: 0 auto; padding: 20px; }
.card { background: rgba(255,255,255,0.95); border-radius: 16px; box-shadow: 0 20px 60px rgba(0,0,0,0.3); padding: 40px; margin: 20px 0; }
.btn { display: inline-block; padding: 12px 24px; border: none; border-radius: 8px; cursor: pointer; font-size: 14px; text-decoration: none; transition: all 0.3s; }
.btn-primary { background: linear-gradient(135deg, #6366f1, #8b5cf6); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 15px rgba(99,102,241,0.4); }
.btn-success { background: linear-gradient(135deg, #10b981, #059669); color: white; }
.btn-danger { background: linear-gradient(135deg, #ef4444, #dc2626); color: white; }
.btn-warning { background: linear-gradient(135deg, #f59e0b, #d97706); color: white; }
.btn-secondary { background: #6b7280; color: white; }
.form-control { width: 100%; padding: 12px 16px; border: 2px solid #e5e7eb; border-radius: 8px; font-size: 14px; transition: border-color 0.3s; }
.form-control:focus { outline: none; border-color: #6366f1; }
.form-label { display: block; margin-bottom: 8px; font-weight: 600; color: #374151; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.text-center { text-align: center; }
.text-danger { color: #ef4444; }
.text-success { color: #10b981; }
.text-muted { color: #6b7280; }
.alert { padding: 16px; border-radius: 8px; margin-bottom: 20px; }
.alert-danger { background: #fef2f2; border: 1px solid #fecaca; color: #dc2626; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #059669; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px; text-align: left; border-bottom: 1px solid #e5e7eb; }
.table th { background: #f9fafb; font-weight: 600; }
.table tr:hover { background: #f9fafb; }
.badge { display: inline-block; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-success, .bg-success { background: #d1fae5; color: #059669; }
.badge-danger, .bg-danger { background: #fee2e2; color: #dc2626; }
.badge-warning, .bg-warning { background: #fef3c7; color: #d97706; }
.badge-primary, .bg-primary { background: #e0e7ff; color: #4f46e5; }
.sidebar { background: linear-gradient(180deg, #1e1e2e 0%, #2d2d44 100%); min-height: 100vh; padding: 20px; width: 250px; position: fixed; left: 0; top: 0; }
.sidebar .nav-link { color: rgba(255,255,255,0.7); padding: 12px 16px; border-radius: 8px; display: block; text-decoration: none; margin-bottom: 4px; transition: all 0.3s; }
.sidebar .nav-link:hover, .sidebar .nav-link.active { background: rgba(99,102,241,0.2); color: white; }
.main-content { margin-left: 250px; padding: 30px; }
.page-header { margin-bottom: 30px; }
.page-header h1 { font-size: 28px; color: #1f2937; margin-bottom: 8px; }
.stats-card { background: white; border-radius: 12px; padding: 24px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
.stats-card h3 { font-size: 32px; color: #1f2937; margin-bottom: 4px; }
.stats-card p { color: #6b7280; font-size: 14px; }
.d-flex { display: flex; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }
.row { display: flex; flex-wrap: wrap; margin: -12px; }
.col-md-3 { flex: 0 0 25%; max-width: 25%; padding: 12px; }
.col-md-4 { flex: 0 0 33.333%; max-width: 33.333%; padding: 12px; }
.col-md-6 { flex: 0 0 50%; max-width: 50%; padding: 12px; }
.col-md-12 { flex: 0 0 100%; max-width: 100%; padding: 12px; }
input[type="checkbox"] { width: 18px; height: 18px; cursor: pointer; }
.form-check { display: flex; align-items: center; gap: 8px; }
.login-container { display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; }
.login-card { width: 100%; max-width: 420px; }
.login-header { text-align: center; margin-bottom: 32px; }
.login-header h1 { color: #1f2937; font-size: 28px; margin-bottom: 8px; }
.login-header p { color: #6b7280; }