:root {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --color-primary: #4a4a4a;
  --color-secondary: #6c757d;
  --color-accent: #007bff;
  --color-border: #e9ecef;
  --color-error: #dc3545;
  --color-success: #28a745;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg-primary);
  color: var(--color-primary);
  line-height: 1.6;
}

.app-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

h1 {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-accent);
}

.input-container {
  position: relative;
  margin-bottom: 1rem;
}

textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  font-size: 1rem;
  resize: vertical;
  min-height: 100px;
  transition: var(--transition);
}

textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.icon-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-secondary);
  cursor: default;
  transition: var(--transition);
}

.icon-btn:hover {
  color: var(--color-accent);
}

#settings-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  transition: transform 0.3s ease;
}

#settings-btn.rotate {
  transform: rotate(180deg);
}

.settings-panel {
  background-color: var(--bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 1rem;
  margin-bottom: 1rem;
  transition: var(--transition);
}

.setting-group {
  margin-bottom: 1rem;
}

.setting-group:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  font-size: 1rem;
  transition: var(--transition);
}

select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.options {
  display: flex;
  gap: 0.5rem;
}

.option-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  background-color: var(--bg-secondary);
  color: var(--color-primary);
  font-size: 1rem;
  cursor: default;
  transition: var(--transition);
}

.option-btn:hover {
  background-color: var(--bg-primary);
}

.option-btn.selected {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.primary-btn {
  display: block;
  width: 100%;
  padding: 1rem;
  background-color: var(--color-accent);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: default;
  transition: var(--transition);
}

.primary-btn:hover {
  background-color: #0056b3;
}

.primary-btn:disabled {
  background-color: var(--color-secondary);
  cursor: not-allowed;
}

.spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
  margin: 0 auto;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.purifying-container {
  display: none;
  align-items: center;
  justify-content: center;
  margin-top: 1rem;
}

.purifying-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
  margin-right: 0.5rem;
}

.purifying-text {
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.images-container {
  margin-top: 2rem;
}

.image-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.image-container {
  position: relative;
  overflow: hidden;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.image-container img {
  width: 100%;
  height: auto;
  display: block;
}

.image-actions {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: space-between;
  padding: 0.5rem;
  opacity: 0;
  transition: var(--transition);
}

.image-container:hover .image-actions {
  opacity: 1;
}

.image-actions button {
  background: none;
  border: none;
  color: white;
  cursor: default;
  font-size: 1rem;
  transition: var(--transition);
}

.image-actions button:hover {
  color: var(--color-accent);
}

footer {
  text-align: center;
  margin-top: 2rem;
  color: var(--color-secondary);
}

.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.show {
  display: block;
  opacity: 1;
}

.modal-content {
  background-color: var(--bg-secondary);
  margin: 15% auto;
  padding: 2rem;
  border-radius: 0.5rem;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transform: translateY(-50px);
  transition: transform 0.3s ease;
}

.modal-content h2 {
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.modal-content p {
  margin-bottom: 1rem;
  color: var(--color-secondary);
}

.modal.show .modal-content {
  transform: translateY(0);
}

.hidden {
  display: none;
}

.close-btn {
  float: right;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: default;
  background: none;
  border: none;
  color: var(--color-secondary);
}

.close-btn:hover {
  color: var(--color-primary);
}

.checkbox-container {
  display: flex;
  align-items: flex-start;
  margin: 1rem 0;
}

.checkbox-container input {
  margin-right: 0.5rem;
  margin-top: 0.25rem;
}

.link {
  color: var(--color-accent);
  text-decoration: none;
}

.link:hover {
  text-decoration: underline;
}

.report-options {
  list-style-type: none;
  padding: 0;
  margin: 1rem 0;
}

.report-options li {
  padding: 0.5rem;
  margin: 0.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  cursor: default;
  transition: var(--transition);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.report-options li:hover {
  background-color: var(--bg-primary);
}

.report-options li.selected {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.report-options li i {
  display: none;
}

.report-options li.selected i {
  display: inline-block;
}

.submit-btn {
  margin-top: 1rem;
}

.submit-btn .spinner {
  display: inline-block;
  margin-right: 0.5rem;
  vertical-align: middle;
}

.submit-btn .success {
  color: var(--color-success);
}

.submit-btn .error {
  color: var(--color-error);
}

@media (max-width: 600px) {
  .app-container {
    padding: 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  .image-grid {
    grid-template-columns: 1fr;
  }
}