.assn-dialog-overlay{position:fixed;inset:0;background:rgba(15,23,42,0.5);backdrop-filter:blur(4px);z-index:50;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity 0.3s}.assn-dialog-overlay.show{opacity:1}.assn-dialog{background:white;width:100%;max-width:28rem;border-radius:1rem;box-shadow:0 25px 50px -12px rgba(0,0,0,0.25);overflow:hidden;transform:scale(0.95);transition:transform 0.3s;max-height:90vh;display:flex;flex-direction:column}.assn-dialog-overlay.show .assn-dialog{transform:scale(1)}.assn-dialog-header{padding:1.5rem;border-bottom:1px solid #f1f5f9;display:flex;justify-content:space-between;align-items:center;background:#f8fafc}.assn-dialog-header h3{font-weight:700;color:#1e293b;margin:0;display:flex;align-items:center;gap:0.5rem;font-size:1.125rem}.assn-dialog-header h3 .material-icons{color:#0284c7;font-size:1.5rem}.assn-dialog-close{color:#94a3b8;background:none;border:none;cursor:pointer;padding:0.25rem;border-radius:0.375rem;transition:all 0.2s;display:flex;align-items:center;justify-content:center}.assn-dialog-close:hover{color:#475569;background:#f1f5f9}.assn-dialog-body{padding:1.5rem;overflow-y:auto;flex:1}.assn-dialog-title{font-size:0.875rem;color:#475569;margin-bottom:0.5rem}.assn-dialog-title strong{font-weight:700;color:#0284c7}.assn-dialog-subtitle{font-size:0.875rem;color:#64748b;margin-bottom:1rem}.assn-class-list-container{padding:0.25rem;margin-bottom:1rem}.assn-class-list{max-height:200px;overflow-y:auto;margin:0.5rem 0;border:1px solid #e2e8f0;border-radius:0.75rem;padding:0.5rem;background:#f8fafc}.assn-class-group{margin-bottom:0.75rem}.assn-class-group-header{display:flex;align-items:center;justify-content:space-between;padding:0.5rem;background:white;border-radius:0.5rem;margin-bottom:0.25rem}.assn-class-group-header label{display:flex;align-items:center;gap:0.5rem;cursor:pointer;font-weight:500;color:#1e293b;flex:1}.assn-class-group-header input[type="checkbox"]{width:1.25rem;height:1.25rem;border-radius:0.375rem;border:2px solid #cbd5e1;cursor:pointer;accent-color:#0284c7}.assn-class-toggle{background:none;border:none;color:#64748b;cursor:pointer;padding:0.25rem;border-radius:0.375rem;transition:all 0.2s;display:flex;align-items:center;justify-content:center}.assn-class-toggle:hover{background:#f1f5f9;color:#475569}.assn-class-group-content{padding-right:1rem;display:none}.assn-class-group-content.expanded{display:block}.assn-student-item{margin-right:0.75rem;padding:0.375rem 0.5rem;border-right:1px solid #f1f5f9;margin-bottom:0.25rem}.assn-student-item label{display:flex;align-items:center;gap:0.5rem;cursor:pointer;color:#475569;font-size:0.875rem}.assn-student-item input[type="checkbox"]{width:1rem;height:1rem;border-radius:0.25rem;border:2px solid #cbd5e1;cursor:pointer;accent-color:#0284c7}.assn-params-container{display:flex;flex-direction:column;gap:1rem;padding:1rem;background:#f8fafc;border-radius:0.75rem;border:1px solid #e2e8f0;margin-bottom:1rem}.assn-param-group{display:flex;flex-direction:column;gap:0.5rem}.assn-param-label{font-size:0.75rem;font-weight:700;color:#94a3b8;text-transform:uppercase;letter-spacing:0.05em}.assn-param-input{width:250px;padding:0.75rem;border-radius:0.75rem;border:1px solid #e2e8f0;font-size:0.875rem;transition:all 0.2s}.assn-param-input:focus{outline:none;border-color:#0284c7;box-shadow:0 0 0 3px rgba(2,132,199,0.1)}.assn-param-input[type="number"]{width:80px}.assn-param-input select{width:100%;padding:0.75rem;border-radius:0.75rem;border:1px solid #e2e8f0;font-size:0.875rem;transition:all 0.2s;background:white}.assn-param-input select:focus{outline:none;border-color:#0284c7;box-shadow:0 0 0 3px rgba(2,132,199,0.1)}.assn-dialog-footer{padding:1.5rem;background:#f8fafc;display:flex;gap:0.75rem;border-top:1px solid #f1f5f9}.assn-btn{flex:1;padding:0.75rem;border-radius:0.75rem;font-weight:700;font-size:0.875rem;cursor:pointer;transition:all 0.2s;border:none;display:flex;align-items:center;justify-content:center;gap:0.5rem}.assn-btn-cancel{background:white;color:#475569;border:1px solid #e2e8f0}.assn-btn-cancel:hover{background:#f1f5f9}.assn-btn-submit{background:#0284c7;color:white;box-shadow:0 10px 15px -3px rgba(2,132,199,0.1),0 4px 6px -4px rgba(2,132,199,0.1)}.assn-btn-submit:hover{background:#0369a1}.assn-btn-submit:disabled{opacity:0.6;cursor:not-allowed}.assn-class-list::-webkit-scrollbar{width:6px}.assn-class-list::-webkit-scrollbar-track{background:#f1f5f9;border-radius:3px}.assn-class-list::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.assn-class-list::-webkit-scrollbar-thumb:hover{background:#94a3b8}