* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.quiz-body {
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 15px;
}

.quiz-container {
    background-color: #ffffff;
    width: 100%;
    max-width: 500px;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #65676b;
    font-weight: 700;
    margin-bottom: 16px;
}

.quote-box {
    background-color: #f7f8fa;
    border-left: 5px solid #007aff;
    padding: 20px;
    margin-bottom: 24px;
    border-radius: 4px 12px 12px 4px;
    min-height: 100px;
    display: flex;
    align-items: center;
}

.quote-text {
    font-size: 1.25rem;
    font-style: italic;
    color: #1c1e21;
    line-height: 1.5;
}

.options-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-btn {
    width: 100%;
    background-color: #ffffff;
    border: 2px solid #e4e6eb;
    border-radius: 12px;
    padding: 16px;
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    color: #050505;
    cursor: pointer;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
    .option-btn:hover:not([disabled]) {
        background-color: #f2f3f5;
        border-color: #bcc0c4;
    }
}

.option-btn:active:not([disabled]) {
    transform: scale(0.98);
}

.option-btn.correct {
    background-color: #e7f5ed;
    border-color: #24a157;
    color: #166534;
}

.option-btn.incorrect {
    background-color: #fce8e6;
    border-color: #e41e3f;
    color: #991b1b;
}

.action-bar {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.primary-btn {
    width: 100%;
    background-color: #007aff;
    color: white;
    border: none;
    border-radius: 12px;
    padding: 16px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s;
}

.primary-btn:hover { background-color: #0063cc; }
.primary-btn:disabled { display: none; }

.feedback-message {
    font-size: 1.1rem;
    font-weight: 700;
    text-align: center;
    min-height: 27px;
}
.feedback-message.correct { color: #24a157; }
.feedback-message.incorrect { color: #e41e3f; }

.results-screen { text-align: center; padding: 10px 0; }
.results-score { font-size: 3rem; font-weight: 800; color: #007aff; margin: 16px 0; }