* {
    box-sizing: border-box;
}

body {

    margin: 0;

    font-family: Arial, sans-serif;

    background: #f3f6fa;

    color: #222;

}


.container {

    max-width: 850px;

    margin: 40px auto;

    padding: 20px;

}


h1 {

    margin-top: 0;

}


.card {

    background: white;

    padding: 25px;

    margin: 15px 0;

    border-radius: 12px;

    box-shadow:
        0 3px 12px rgba(0,0,0,0.08);

}


.btn {

    display: inline-block;

    background: #2563eb;

    color: white;

    border: none;

    padding: 12px 20px;

    border-radius: 8px;

    text-decoration: none;

    cursor: pointer;

    font-size: 16px;

}


.btn:hover {

    opacity: 0.9;

}


.admin-link {

    display: inline-block;

    margin-top: 20px;

    color: #555;

}


.quiz-header {

    display: flex;

    justify-content: space-between;

    align-items: center;

    gap: 15px;

    margin-bottom: 20px;

}


#timer {

    background: #111827;

    color: white;

    padding: 10px 15px;

    border-radius: 8px;

    font-weight: bold;

}


.question-number {

    color: #666;

    margin-bottom: 10px;

}


.options {

    display: grid;

    gap: 12px;

    margin-top: 25px;

}


.option {

    text-align: left;

    padding: 16px;

    border: 2px solid #ddd;

    background: white;

    border-radius: 10px;

    cursor: pointer;

    font-size: 16px;

}


.option:hover:not(:disabled) {

    border-color: #2563eb;

}


.option.correct {

    background: #d1fae5;

    border-color: #16a34a;

    color: #166534;

}


.option.wrong {

    background: #fee2e2;

    border-color: #dc2626;

    color: #991b1b;

}


.progress {

    margin: 20px 0;

    color: #555;

}


.score {

    font-size: 48px;

    font-weight: bold;

    margin: 20px 0;

}


.result {

    text-align: center;

}


input,
select,
textarea {

    width: 100%;

    padding: 10px;

    border: 1px solid #ccc;

    border-radius: 7px;

    font-size: 15px;

}


label {

    display: block;

    margin: 12px 0 5px;

    font-weight: bold;

}


.question-box {

    border: 1px solid #ddd;

    padding: 18px;

    margin: 20px 0;

    border-radius: 10px;

    background: #fafafa;

}


.small-btn {

    background: #dc2626;

    color: white;

    border: none;

    padding: 8px 12px;

    border-radius: 6px;

    text-decoration: none;

}


.message {

    padding: 12px;

    background: #dcfce7;

    color: #166534;

    border-radius: 7px;

    margin-bottom: 15px;

}


@media (max-width: 600px) {

    .container {

        margin: 15px auto;

        padding: 12px;

    }


    .quiz-header {

        align-items: flex-start;

        flex-direction: column;

    }


    .option {

        font-size: 15px;

    }

}