style.css

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f7f9fc;
  color: #333;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: white;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  color: #2c3e50;
  margin-bottom: 1rem;
}

p {
  text-align: center;
  color: #7f8c8d;
  margin-bottom: 2rem;
}

.input-section,
.options-section,
.player-section,
.output-section {
  margin-bottom: 1.8rem;
}

label {
  display: block;
  margin-bottom: 0.6rem;
  font-weight: 600;
  color: #2c3e50;
}

#audioInput {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid #bdc3c7;
  border-radius: 8px;
  font-size: 1rem;
}

#useSample {
  margin-top: 0.8rem;
  padding: 0.6rem 1rem;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: background-color 0.2s;
}

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

.options {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.options label {
  font-weight: normal;
  display: flex;
  align-items: center;
  font-size: 0.95rem;
}

.player-section audio {
  width: 100%;
}

#status {
  margin-bottom: 1rem;
  padding: 0.8rem;
  background-color: #f1f1f1;
  border-radius: 8px;
  font-size: 0.95rem;
  color: #555;
  text-align: center;
}

.output-section h2 {
  margin-bottom: 0.8rem;
  color: #2c3e50;
  font-size: 1.2rem;
}

#output {
  background-color: #2c3e50;
  color: #ecf0f1;
  padding: 1.2rem;
  border-radius: 8px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  max-height: 400px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* Responsive */
@media (max-width: 600px) {
  .container {
    padding: 1.2rem;
    margin: 1rem;
    border-radius: 8px;
  }

  h1 {
    font-size: 1.5rem;
  }

  .options {
    flex-direction: column;
    gap: 0.5rem;
  }

  #useSample {
    font-size: 0.9rem;
  }
}