* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    color: #222;
}

.container {
    width: min(800px, 92%);
    margin: 40px auto;
}

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

.header h1 {
    margin: 0;
    font-size: 38px;
}

.header p {
    margin-top: 5px;
    font-size: 18px;
    color: #666;
}

.card {
    background: white;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
}

.hidden {
    display: none;
}

label {
    display: block;
    margin-top: 20px;
    margin-bottom: 7px;
    font-weight: bold;
}

input,
textarea {
    width: 100%;
    padding: 13px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 16px;
}

button {
    margin-top: 25px;
    padding: 13px 25px;
    border: none;
    border-radius: 6px;
    background: #222;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

button:hover:not(:disabled) {
    opacity: 0.9;
}

.progress {
    margin-bottom: 25px;
    font-weight: bold;
}

.question h2 {
    font-size: 22px;
    line-height: 1.5;
}

.option {
    display: block;
    width: 100%;
    text-align: left;
    margin-top: 12px;
    padding: 15px;
    background: white;
    color: #222;
    border: 1px solid #ccc;
}

.option.selected {
    border: 2px solid #222;
}

.error {
    color: #b00020;
    margin-top: 15px;
}

.result-level {
    font-size: 32px;
    font-weight: bold;
}
.reading-material {
    margin: 25px 0;
    padding: 20px;
    background: #f7f7f7;
    border: 1px solid #ddd;
    border-radius: 8px;
}

.reading-instruction {
    font-weight: bold;
    margin-bottom: 20px;
}

.reading-passage {
    white-space: pre-line;
    line-height: 1.7;
    max-height: 500px;
    overflow-y: auto;
    padding: 15px;
    background: white;
    border: 1px solid #ddd;
}

.writing-instruction {
    margin: 15px 0;
    line-height: 1.6;
    font-size: 17px;
}

.writing-points {
    font-weight: bold;
}

.answer-instruction {
    font-weight: bold;
}