.quiz-container-wrapper {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    min-height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.quiz-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    padding: 3rem;
    max-width: 700px;
    width: 100%;
    backdrop-filter: blur(10px);
}

.quiz-header {
    text-align: center;
    margin-bottom: 2rem;
}

.quiz-header h1 {
    color: #1e3c72;
    font-size: 2.5rem;
    margin: 0;
}

.quiz-header p {
    color: #666;
    font-size: 1.2rem;
    margin: 0.5rem 0;
}

.question-counter {
    background: linear-gradient(135deg, #11998e, #38ef7d);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    display: inline-block;
}

.question {
    font-size: 1.95rem;
    color: #333;
    margin: 2rem 0;
    line-height: 1.4;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.option-item {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 15px;
    padding: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.option-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-color: #11998e;
}

.option-item.correct {
    background: linear-gradient(135deg, #48bb78, #38a169);
    color: white;
    border-color: #38a169;
}

.option-item.wrong {
    background: linear-gradient(135deg, #f56565, #e53e3e);
    color: white;
    border-color: #e53e3e;
}

.option-item.disabled {
    pointer-events: none;
}

.navigation-controls {
    display: flex;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

.nav-btn {
    background: linear-gradient(135deg, #11998e, #38ef7d);
    color: white;
    border: none;
    padding: 0.8rem 1.6rem;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
}

.score-display {
    text-align: center;
    font-size: 1.25rem;
    color: #1e3c72;
    font-weight: bold;
    margin-top: 1rem;
}

.restart-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 0.8rem 1.6rem;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
    display: block;
    margin: 10px auto;
}