:root {
    --gray: #f8f9fa;
    --gray-dark: #e9ecef;
    --ok: #4DAD45;
    --not-ok: #EC2232;
    --navigation: #343a40;
    --text-main: #2d3436;
    --shadow: 0 10px 25px rgba(0,0,0,0.08);
}

body {
    font-family: 'Poppins', sans-serif;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-weight: 600;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    color: var(--text-main);
}

main {
    width: 100%;
    max-width: 1100px;
    height: auto;
    padding: 20px;
    box-sizing: border-box;
}

.quiz-container {
    box-sizing: border-box;
    background-color: white;
    border-radius: 24px;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    padding: 40px;
    width: 100%;
    box-shadow: var(--shadow);
}

.question-answer-wrapper {
    display: flex;
    flex-direction: row;
    column-gap: 5vw;
    min-height: 50vh;
    align-items: flex-start;
}

.quiz-container .question-wrapper {
    text-align: left;
    color: var(--text-main);
    width: 45%;
}

.question {
    font-size: 2.2rem;
    line-height: 1.3;
    margin-bottom: 20px;
}

.quiz-container .question-wrapper .questions-counter .max-possible-score {
    font-size: 1.1rem;
    color: #636e72;
    font-weight: 400;
}

.quiz-container .answers {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    width: 60%;
}

.quiz-container .answers button {
    color: var(--text-main);
    background-color: var(--gray);
    border: 2px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    padding: 25px;
    min-height: 5.5rem;
    font-family: 'Poppins';
    width: 100%;
    transition: all 0.2s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.03);
    word-wrap: break-word;
    word-break: break-word;
    border: 1px solid rgba(0,0,0,0.05);
}

.quiz-container .answers button:hover:not(.correct):not(.incorrect) {
    background-color: var(--gray-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.quiz-container .answers button.correct {
    background-color: var(--ok);
    color: white;
    border-color: #3e8e37;
}

.quiz-container .answers button.incorrect {
    background-color: var(--not-ok);
    color: white;
    border-color: #c01d2a;
}

.quiz-container .navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--gray);
}

.quiz-container .navigation .nav-button {
    background-color: var(--navigation);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    height: auto;
    padding: 12px 30px;
    border-radius: 10px;
    transition: opacity 0.2s, transform 0.1s, background-color 0.2s;
    display: none;
}

.quiz-container .navigation .nav-button.visible {
    display: block;
}

.quiz-container .navigation .nav-button:hover {
    background-color: #23272b;
}

.quiz-container .navigation .nav-button:active {
    transform: scale(0.98);
}

/* --- Media Queries --- */

@media (max-width: 768px) {
    .question-answer-wrapper {
        flex-direction: column;
    }
    
    .quiz-container .question-wrapper, 
    .quiz-container .answers {
        width: 100%;
    }
    
    .quiz-container {
        padding: 25px;
    }

    .question {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .quiz-container {
        max-width: 95vw;
        margin: 10px auto;
    }
    
    .question {
        font-size: 1.4rem;
    }
    
    .quiz-container .answers button {
        font-size: 1.1rem;
        min-height: 4rem;
        padding: 12px;
    }
    
    .quiz-container .navigation {
        flex-direction: column;
        gap: 15px;
    }

    .quiz-container .navigation .nav-button {
        width: 100%;
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    .question-answer-wrapper {
        flex-direction: row;
        min-height: auto;
    }
    
    .quiz-container .question-wrapper {
        width: 40%;
    }
    
    .quiz-container .answers {
        width: 60%;
    }
    
    .question {
        font-size: 1.2rem;
    }
}