:root{--primary-50: #EEF2FF;--primary-100: #E0E7FF;--primary-200: #C7D2FE;--primary-300: #A5B4FC;--primary-400: #818CF8;--primary-500: #4F6BED;--primary-600: #4338CA;--primary-700: #3730A3;--primary-800: #312E81;--primary-900: #1E1B4B;--gray-25: #FCFCFD;--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;--success-light: #ECFDF5;--success: #22C55E;--success-dark: #15803D;--warning-light: #FFF8E1;--warning: #F59E0B;--warning-dark: #B45309;--danger-light: #FEF2F2;--danger: #EF4444;--danger-dark: #B91C1C;--info-light: #EFF6FF;--info: #3B82F6;--info-dark: #1D4ED8;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .8125rem;--font-size-base: .875rem;--font-size-md: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--space-1: 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#FDE68A}.settings-role-badge{margin-bottom:var(--space-5)}.settings-section-header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-4);flex-wrap:wrap}.user-add-form{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:var(--space-6);margin-top:var(--space-5);margin-bottom:var(--space-5);animation:slideDown .25s ease-out}.user-add-form h4{font-size:var(--font-size-md);font-weight:700;color:var(--gray-800);margin-bottom:var(--space-5)}.user-add-actions{display:flex;gap:var(--space-3)}.role-select-group{display:flex;gap:var(--space-2)}.role-select-btn{display:flex;align-items:center;gap:var(--space-2);padding:10px 16px;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:600;border:1.5px solid var(--gray-200);background:#fff;color:var(--gray-600);transition:all var(--transition-fast);cursor:pointer}.role-select-btn:hover{border-color:var(--gray-300);background:var(--gray-50)}.role-select-btn.active.role-select-admin{border-color:var(--primary-400);background:var(--primary-50);color:var(--primary-600);box-shadow:0 0 0 3px #4f6bed1a}.role-select-btn.active.role-select-instructor{border-color:var(--success);background:var(--success-light);color:var(--success-dark);box-shadow:0 0 0 3px #22c55e1a}.role-select-btn.active.role-select-student{border-color:var(--warning);background:var(--warning-light);color:var(--warning-dark);box-shadow:0 0 0 3px #f59e0b1a}.users-list{margin-top:var(--space-5);display:flex;flex-direction:column;gap:1px;background:var(--gray-100);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--gray-200)}.user-list-item{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-5);background:#fff;transition:background var(--transition-fast)}.user-list-item:hover{background:var(--gray-25)}.user-list-avatar{width:38px;height:38px;min-width:38px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--primary-100),var(--primary-200));color:var(--primary-700);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-sm);font-weight:700}.user-list-info{flex:1;min-width:0}.user-list-name{font-size:var(--font-size-base);font-weight:600;color:var(--gray-800);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-list-email{font-size:var(--font-size-xs);color:var(--gray-500);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-list-date{font-size:var(--font-size-xs);color:var(--gray-400);white-space:nowrap;min-width:80px;text-align:right}.user-list-actions{min-width:40px;display:flex;justify-content:flex-end}.btn-icon-danger{color:var(--gray-400);transition:all var(--transition-fast);border-radius:var(--radius-md);padding:6px}.btn-icon-danger:hover{color:var(--danger);background:var(--danger-light)}.user-delete-confirm{display:flex;align-items:center;gap:var(--space-2);font-size:var(--font-size-xs);color:var(--gray-600);animation:fadeIn .2s ease-out}.user-delete-confirm .btn-icon{padding:4px 10px;font-size:var(--font-size-xs);font-weight:600;border-radius:var(--radius-sm)}.user-delete-confirm .btn-icon-danger{background:var(--danger-light);color:var(--danger)}.user-delete-confirm .btn-icon-danger:hover{background:var(--danger);color:#fff}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media(max-width:768px){.login-role-buttons{flex-direction:column}.role-select-group,.user-list-item{flex-wrap:wrap}.user-list-date{display:none}}