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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  background: white;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  padding: 30px;
}

h1 {
  color: #333;
  margin-bottom: 10px;
  font-size: 28px;
}

.subtitle {
  color: #666;
  margin-bottom: 30px;
  font-size: 14px;
}

.section {
  background: #f8f9fa;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.section-title {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  margin-bottom: 15px;
}

.input-group {
  margin-bottom: 15px;
}

label {
  display: block;
  font-size: 14px;
  color: #555;
  margin-bottom: 8px;
  font-weight: 500;
}

input[type='file'],
input[type='url'],
input[type='number'],
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  transition: border-color 0.3s;
}

input:focus,
select:focus {
  outline: none;
  border-color: #667eea;
}

.params-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
}

.btn {
  background: #667eea;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.btn:hover {
  background: #5568d3;
  transform: translateY(-2px);
}

.btn:disabled {
  background: #ccc;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: #6c757d;
}

.btn-secondary:hover {
  background: #5a6268;
}

.btn-group {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.loading {
  text-align: center;
  color: #667eea;
  margin: 20px 0;
  font-weight: 500;
}

.result {
  background: #f8f9fa;
  border-radius: 8px;
  padding: 20px;
  margin-top: 20px;
}

.result img {
  max-width: 100%;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  margin-top: 15px;
}

.log {
  background: #000;
  color: #0f0;
  padding: 15px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  max-height: 200px;
  overflow-y: auto;
  white-space: pre-wrap;
  margin-top: 20px;
}

.error {
  background: #f8d7da;
  color: #721c24;
  padding: 12px;
  border-radius: 6px;
  margin: 10px 0;
}

.success {
  background: #d4edda;
  color: #155724;
  padding: 12px;
  border-radius: 6px;
  margin: 10px 0;
}

.hint {
  font-size: 12px;
  color: #888;
  margin-top: 5px;
}

.preset-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 15px;
}

.btn-preset {
  background: #f0f0f0;
  color: #333;
  border: 1px solid #ddd;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-preset:hover:not(:disabled) {
  background: #e0e0e0;
  border-color: #999;
}

.btn-preset.active {
  background: #667eea;
  color: white;
  border-color: #667eea;
}

.btn-preset:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}