@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
  --primary-color: #007bff;
  --primary-hover-color: #0056b3;
  --success-color: #28a745;
  --error-color: #dc3545;
  --background-color: #f8f9fa;
  --form-background-color: #ffffff;
  --text-color: #333;
  --border-color: #dee2e6;
  --shadow-color: rgba(0, 0, 0, 0.1);
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
  box-sizing: border-box;
}

.container {
  width: 100%;
  max-width: 600px;
  background-color: var(--form-background-color);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 8px 24px var(--shadow-color);
  border: 1px solid var(--border-color);
}

h2 {
  text-align: center;
  margin-top: 0;
  margin-bottom: 30px;
  font-weight: 600;
  font-size: 28px;
}

.form-group {
  margin-bottom: 20px;
}

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

input,
textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  box-sizing: border-box;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

textarea {
  height: 120px;
  resize: vertical;
}

button {
  width: 100%;
  padding: 14px;
  background: var(--primary-color);
  color: white;
  font-size: 16px;
  font-weight: 500;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

button:hover {
  background: var(--primary-hover-color);
}

button:disabled {
  background-color: #a0a0a0;
  cursor: not-allowed;
}

#result {
  margin-top: 20px;
  text-align: center;
  font-weight: 500;
  padding: 12px;
  border-radius: 8px;
  display: none; /* Initially hidden */
}

.error {
  color: var(--error-color);
  background-color: rgba(220, 53, 69, 0.1);
  display: block;
}

.success {
  color: var(--success-color);
  background-color: rgba(40, 167, 69, 0.1);
  display: block;
}

.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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