/* 悬浮球样式 */
.feedback-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1000;
  cursor: move;
}

.feedback-ball {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
  user-select: none;
}

.feedback-ball:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.feedback-ball i {
  font-size: 1.8rem;
  color: white;
}

.feedback-panel {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 400px;
  background: white;
  border-radius: 15px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.3);
  display: none;
  animation: slideUp 0.3s;
  max-height: 80vh;
  overflow-y: auto;
}

.feedback-panel.show {
  display: block;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feedback-panel .modal-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 20px 30px;
  border-radius: 15px 15px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.feedback-panel .modal-header h3 {
  margin: 0;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.feedback-panel .close {
  font-size: 2rem;
  font-weight: 300;
  cursor: pointer;
  line-height: 1;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.feedback-panel .close:hover {
  opacity: 1;
}

.feedback-panel .modal-body {
  padding: 30px;
}

.feedback-panel .form-group {
  margin-bottom: 20px;
}

.feedback-panel .form-group label {
  display: block;
  margin-bottom: 8px;
  color: #333;
  font-weight: 500;
}

.feedback-panel .required {
  color: #dc3545;
}

.feedback-panel .form-group input,
.feedback-panel .form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

.feedback-panel .form-group input:focus,
.feedback-panel .form-group textarea:focus {
  outline: none;
  border-color: #667eea;
}

.feedback-panel .form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.feedback-panel .form-buttons {
  display: flex;
  gap: 15px;
  margin-top: 25px;
}

.feedback-panel .btn-cancel,
.feedback-panel .btn-submit {
  flex: 1;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
}

.feedback-panel .btn-cancel {
  background: #e0e0e0;
  color: #333;
}

.feedback-panel .btn-cancel:hover {
  background: #d0d0d0;
}

.feedback-panel .btn-submit {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.feedback-panel .btn-submit:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.feedback-panel .success-message {
  text-align: center;
  padding: 40px 20px;
}

/* 移动端优化 */
@media (max-width: 768px) {
  .feedback-float {
    bottom: 20px;
    right: 20px;
  }
  
  .feedback-ball {
    width: 50px;
    height: 50px;
    min-width: 50px;
    min-height: 50px;
  }
  
  .feedback-ball i {
    font-size: 1.5rem;
  }
  
  .feedback-panel {
    width: calc(100vw - 40px);
    max-width: 400px;
    bottom: 70px;
    right: 0;
    left: 50%;
    transform: translateX(-50%);
    max-height: 70vh;
  }
  
  .feedback-panel .modal-header {
    padding: 15px 20px;
  }
  
  .feedback-panel .modal-header h3 {
    font-size: 1.1rem;
  }
  
  .feedback-panel .close {
    font-size: 1.8rem;
  }
  
  .feedback-panel .modal-body {
    padding: 20px;
  }
  
  .feedback-panel .form-group {
    margin-bottom: 15px;
  }
  
  .feedback-panel .form-group label {
    font-size: 0.9rem;
    margin-bottom: 6px;
  }
  
  .feedback-panel .form-group input,
  .feedback-panel .form-group textarea {
    padding: 10px 12px;
    font-size: 0.9rem;
    min-height: 44px;
  }
  
  .feedback-panel .form-group textarea {
    min-height: 80px;
  }
  
  .feedback-panel .form-buttons {
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
  }
  
  .feedback-panel .btn-cancel,
  .feedback-panel .btn-submit {
    width: 100%;
    padding: 14px 20px;
    min-height: 44px;
    font-size: 0.95rem;
  }
}

@media (max-width: 480px) {
  .feedback-float {
    bottom: 15px;
    right: 15px;
  }
  
  .feedback-ball {
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
  }
  
  .feedback-ball i {
    font-size: 1.4rem;
  }
  
  .feedback-panel {
    width: calc(100vw - 30px);
    bottom: 65px;
    max-height: 65vh;
  }
  
  .feedback-panel .modal-header {
    padding: 12px 15px;
  }
  
  .feedback-panel .modal-header h3 {
    font-size: 1rem;
  }
  
  .feedback-panel .modal-body {
    padding: 15px;
  }
  
  .feedback-panel .form-group input,
  .feedback-panel .form-group textarea {
    padding: 10px;
    font-size: 0.85rem;
  }
}