* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f3f4f6;
    color: #1f2937;
}

.container {
    max-width: 750px;
    margin: 60px auto;
    padding: 20px;
}

.intro {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    margin-bottom: 30px;
}

h2 {
    margin-top: 0;
}

.audio-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

audio {
    width: 100%;
    margin: 20px 0;
}

.progress {
    text-align: center;
    margin-bottom: 15px;
    color: #6b7280;
}

.rating {
    display: flex;
    gap: 15px;
    margin: 15px 0;
}

.rating label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.rating-description {
    color: #6b7280;
    font-size: 14px;
}

textarea {
    width: 100%;
    min-height: 120px;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    resize: vertical;
}

.navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 25px;
}

.button {
    display: inline-block;
    padding: 12px 25px;
    background: #2563eb;
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
}

.button:hover {
    background: #1d4ed8;
}

.secondary {
    background: #6b7280;
}

.secondary:hover {
    background: #4b5563;
}

.result-card {
    background: white;
    padding: 30px;
    margin-bottom: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}