style.css

/* style.css */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f7fa;
  color: #333;
  line-height: 1.6;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: 40px auto;
  padding: 30px;
  background-color: white;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  color: #2c3e50;
  margin-bottom: 16px;
  font-size: 1.8rem;
}

p {
  text-align: center;
  color: #7f8c8d;
  margin-bottom: 24px;
  font-size: 1.1rem;
}

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

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #2c3e50;
}

input[type='text'] {
  width: 100%;
  padding: 12px;
  font-size: 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  transition: border 0.3s;
}

input[type='text']:focus {
  border-color: #3498db;
  outline: none;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

button {
  display: block;
  width: 100%;
  padding: 14px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background-color: #3498db;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #2980b9;
}

button:disabled {
  background-color: #95a5a6;
  cursor: not-allowed;
}

.result-area {
  margin-top: 20px;
}

.loading,
.error {
  padding: 12px;
  margin: 12px 0;
  border-radius: 8px;
  display: none;
  font-size: 0.95rem;
}

.loading {
  background-color: #f8f9fa;
  color: #16a085;
  text-align: center;
}

.error {
  background-color: #fadbd8;
  color: #c0392b;
}

textarea#transcription-result {
  width: 100%;
  min-height: 150px;
  padding: 14px;
  font-size: 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  background-color: #f8f9fa;
  color: #2c3e50;
  resize: vertical;
  font-family: inherit;
}

@media (max-width: 600px) {
  .container {
    padding: 20px;
  }

  h1 {
    font-size: 1.5rem;
  }

  input[type='text'],
  button {
    font-size: 0.95rem;
  }
}