:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --accent-primary: #58a6ff;
  --accent-success: #3fb950;
  --accent-error: #f85149;
  --border-color: #30363d;
  --warning-color: #d29922;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.attribution a {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--bg-secondary);
  color: var(--accent-primary);
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
}

.attribution a:hover {
  background-color: var(--bg-tertiary);
  text-decoration: underline;
}

.model-info {
  background-color: rgba(210, 153, 34, 0.1);
  border: 1px solid var(--warning-color);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
}

.model-info p {
  color: var(--warning-color);
  font-size: 0.9rem;
}

main {
  flex: 1;
}

.input-section {
  background-color: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 2rem;
}

.input-section label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

textarea {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.2s;
}

textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.controls {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: 1rem;
  gap: 1rem;
}

.language-selector {
  flex: 1;
}

.language-selector label {
  display: inline-block;
  margin-right: 0.5rem;
  margin-bottom: 0;
}

select {
  padding: 0.5rem 0.75rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.95rem;
}

.generate-btn {
  padding: 0.75rem 2rem;
  background-color: var(--accent-primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 150px;
  justify-content: center;
}

.generate-btn:hover:not(:disabled) {
  background-color: #4493f8;
}

.generate-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-section {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  text-align: center;
  margin-bottom: 2rem;
}

.progress-container {
  width: 100%;
  height: 8px;
  background-color: var(--bg-primary);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress-bar {
  height: 100%;
  background-color: var(--accent-primary);
  width: 0%;
  transition: width 0.3s ease;
}

.loading-text {
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.loading-subtext {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.error-section {
  background-color: rgba(248, 81, 73, 0.1);
  border: 1px solid var(--accent-error);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.error-text {
  color: var(--accent-error);
  flex: 1;
}

.dismiss-btn {
  padding: 0.5rem 1rem;
  background-color: var(--accent-error);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: opacity 0.2s;
  white-space: nowrap;
}

.dismiss-btn:hover {
  opacity: 0.8;
}

.output-section {
  background-color: var(--bg-secondary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
}

.output-header span {
  font-weight: 600;
  color: var(--text-primary);
}

.copy-btn {
  padding: 0.5rem 1rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.copy-btn:hover {
  background-color: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

pre {
  margin: 0;
  padding: 1.5rem;
  overflow-x: auto;
  background-color: var(--bg-primary) !important;
}

code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.9rem;
}

footer {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

footer a {
  color: var(--accent-primary);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  header h1 {
    font-size: 2rem;
  }
  
  .controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .generate-btn {
    width: 100%;
  }
  
  .error-section {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .dismiss-btn {
    width: 100%;
    margin-top: 0.5rem;
  }
}