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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  background: #0f1419;
  color: #e6edf3;
  min-height: 100vh;
  padding: 20px;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

header {
  text-align: center;
  padding: 40px 20px;
  margin-bottom: 40px;
  background: #161b22;
  border-radius: 12px;
  border: 1px solid #30363d;
}

.logo {
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
  animation: float 3s ease-in-out infinite;
}

.logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 20px rgba(100, 150, 255, 0.5));
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

h1 {
  font-size: 2.5em;
  font-weight: 700;
  color: #58a6ff;
  margin-bottom: 10px;
}

.subtitle {
  color: #8b949e;
  font-size: 1.1em;
  margin-top: 10px;
}

.main-card {
  background: #161b22;
  border-radius: 12px;
  padding: 40px;
  margin-bottom: 30px;
  border: 1px solid #30363d;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

label {
  display: block;
  margin-bottom: 12px;
  font-weight: 600;
  color: #c9d1d9;
  font-size: 1.1em;
}

textarea {
  width: 100%;
  min-height: 150px;
  padding: 16px;
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 6px;
  color: #e6edf3;
  font-size: 16px;
  font-family: inherit;
  resize: vertical;
  transition: all 0.2s ease;
}

textarea:focus {
  outline: none;
  border-color: #58a6ff;
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
}

textarea::placeholder {
  color: #6e7681;
}

.button-container {
  display: flex;
  gap: 15px;
  margin-top: 20px;
  flex-wrap: wrap;
}

button {
  flex: 1;
  min-width: 200px;
  padding: 16px 32px;
  font-size: 1.1em;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.generate-btn {
  background: #238636;
  color: white;
}

.generate-btn:hover:not(:disabled) {
  background: #2ea043;
  transform: translateY(-1px);
}

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

.clear-btn {
  background: transparent;
  color: #c9d1d9;
  border: 1px solid #30363d;
}

.clear-btn:hover {
  background: #21262d;
  border-color: #8b949e;
}

.loading {
  display: none;
  text-align: center;
  padding: 30px;
}

.loading.active { display: block; }

.spinner {
  width: 50px;
  height: 50px;
  margin: 0 auto 15px;
  border: 4px solid #30363d;
  border-top: 4px solid #58a6ff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.output-section { display: none; }
.output-section.active { display: block; }

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 15px;
}

.output-header h2 {
  color: #c9d1d9;
  font-size: 1.5em;
}

.copy-btn {
  padding: 10px 24px;
  background: #21262d;
  color: #c9d1d9;
  border: 1px solid #30363d;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s ease;
}

.copy-btn:hover {
  background: #30363d;
  border-color: #58a6ff;
}

.copy-btn.copied {
  background: #1a7f37;
  border-color: #2ea043;
  color: white;
}

.code-container {
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 6px;
  padding: 20px;
  max-height: 600px;
  overflow: auto;
}

pre {
  margin: 0;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.5;
  color: #e6edf3;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.error-message {
  display: none;
  background: #271b1e;
  border: 1px solid #f85149;
  border-radius: 6px;
  padding: 20px;
  margin-top: 20px;
  color: #ffa198;
}

.error-message.active { display: block; }

.error-message h3 {
  color: #f85149;
  margin-bottom: 10px;
}

footer {
  text-align: center;
  padding: 30px 20px;
  color: #6e7681;
  margin-top: 40px;
}

footer a {
  color: #58a6ff;
  text-decoration: none;
  transition: color 0.2s ease;
}

footer a:hover { color: #79c0ff; }

::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: #0d1117; border-radius: 10px; }
::-webkit-scrollbar-thumb { background: #30363d; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #484f58; }

@media (max-width: 768px) {
  body { padding: 10px; }
  header { padding: 30px 15px; margin-bottom: 20px; }
  h1 { font-size: 1.8em; }
  .logo { width: 80px; height: 80px; }
  .main-card { padding: 20px; }
  .button-container { flex-direction: column; }
  button { min-width: 100%; }
  .output-header { flex-direction: column; align-items: flex-start; }
  .copy-btn { width: 100%; }
  .code-container { max-height: 400px; }
  pre { font-size: 12px; }
}