.giveaway-container{background:#fff;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.1);margin:50px auto;max-width:600px;padding:40px}.giveaway-title{color:#333;font-size:32px;font-weight:700;margin-bottom:10px;text-align:center}.giveaway-subtitle{color:#666;line-height:1.5;margin-bottom:30px;text-align:center}.form-group{margin-bottom:20px}.form-control{background-color:#f5f5f5;border:2px solid #ddd;border-radius:6px;font-size:14px;padding:12px 16px;transition:border-color .3s ease;width:100%}.form-control:focus{background-color:#fff;border-color:#4285f4;outline:none}.form-control.is-invalid{border-color:#dc3545}.checkbox-container{align-items:flex-start;display:flex;margin:20px 0}.checkbox-container input[type=checkbox]{margin-right:8px;margin-top:2px}.checkbox-container label{color:#666;font-size:14px;line-height:1.4}.checkbox-container a{color:#4285f4;text-decoration:underline}.submit-btn{background-color:#4285f4;border:none;border-radius:6px;color:#fff;cursor:pointer;font-size:16px;font-weight:500;min-width:120px;padding:12px 24px;transition:background-color .3s ease}.submit-btn:hover{background-color:#3367d6}.submit-btn:disabled{background-color:#ccc;cursor:not-allowed}.alert{border-radius:4px;margin-bottom:20px;padding:12px}.alert-success{background-color:#d4edda;border:1px solid #c3e6cb;color:#155724}.alert-danger{background-color:#f8d7da;border:1px solid #f5c6cb;color:#721c24}.help-block{color:#dc3545;font-size:12px;margin-top:5px}.loading{display:none}