*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:#333;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}.hidden{display:none!important}.text-center{text-align:center}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}.p-1{padding:.5rem}.p-2{padding:1rem}.p-3{padding:1.5rem}.p-4{padding:2rem}.btn{display:inline-flex;align-items:center;padding:.75rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s;border:none;font-size:1rem}.btn-primary{background:#667eea;color:#fff}.btn-primary:hover{background:#5568d3}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover{background:#5a6268}.btn-danger{background:#dc3545;color:#fff}.btn-danger:hover{background:#c82333}.btn-success{background:#28a745;color:#fff}.btn-success:hover{background:#218838}.form-group{margin-bottom:1rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500}.form-input{width:100%;padding:.75rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}.form-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-textarea{width:100%;padding:.75rem;border:1px solid #ddd;border-radius:4px;font-size:1rem;min-height:100px;resize:vertical}.form-textarea:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.card{background:#fff;border:1px solid #ddd;border-radius:8px;padding:1.5rem;box-shadow:0 2px 4px #0000001a}.spinner{border:3px solid #f3f3f3;border-top:3px solid #667eea;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:0 auto}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.alert{padding:1rem;border-radius:4px;margin-bottom:1rem}.alert-error{background:#fee;color:#c33;border:1px solid #fcc}.alert-success{background:#efe;color:#3c3;border:1px solid #cfc}.alert-info{background:#e7f3ff;color:#0d47a1;border:1px solid #b3d9ff}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background:#fff;padding:2rem;border-radius:8px;max-width:500px;width:90%;max-height:90vh;overflow:auto}