.zvk-feedback-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: #214F31;
  color: #fff;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, background-color 0.2s ease;
}
.zvk-feedback-btn:hover {
  background-color: #2D6B42;
  transform: scale(1.05);
}
.zvk-feedback-panel {
  position: fixed;
  bottom: 92px;
  right: 24px;
  width: 340px;
  max-width: calc(100vw - 48px);
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  z-index: 9999;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.zvk-feedback-panel--open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.zvk-feedback-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background-color: #214F31;
  color: #E1E1C7;
  font-weight: 600;
  font-size: 0.95rem;
}
.zvk-feedback-close {
  background: none;
  border: none;
  color: #E1E1C7;
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0;
}
.zvk-feedback-form {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.zvk-feedback-input,
.zvk-feedback-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #D4D4C0;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.875rem;
  resize: vertical;
  transition: border-color 0.2s ease;
  box-sizing: border-box;
}
.zvk-feedback-input:focus,
.zvk-feedback-textarea:focus {
  outline: none;
  border-color: #214F31;
}
.zvk-feedback-textarea {
  min-height: 80px;
}
.zvk-feedback-submit {
  background-color: #214F31;
  color: #E1E1C7;
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
  font-size: 0.9rem;
}
.zvk-feedback-submit:hover {
  background-color: #2D6B42;
}
.zvk-feedback-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.zvk-feedback-success {
  padding: 30px 20px;
  text-align: center;
  color: #2E7D32;
  font-weight: 500;
}
.zvk-feedback-success svg {
  margin-bottom: 8px;
}
.zvk-feedback-error {
  padding: 8px 12px;
  background: #FFEBEE;
  color: #C62828;
  border-radius: 6px;
  font-size: 0.8rem;
  margin-bottom: 4px;
}
@media (max-width: 480px) {
  .zvk-feedback-panel {
    right: 12px;
    left: 12px;
    width: auto;
    bottom: 88px;
  }
  .zvk-feedback-btn {
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
  }
}