/* quiz_styles.css */
:root {
    --btn-width-at-lesson-detail: 140px;
    --btn-height-at-lesson-detail: 45px;
    --primary-color: #333;
    --secondary-color: #4CAF50;
    --text-color: whitesmoke;
    --background-light: #f8f9fa;
    --border-radius: 8px;
    --box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Основные стили для квизов */
.quiz-container {
    max-width: 98vw;
    margin: 2rem auto;
    padding: 2rem;
    background: var(--background-light);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.quiz-header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--background-light);
    color: var(--primary-color);
    border-radius: var(--border-radius);
    border: 1px solid #e9ecef;
}

.topic-list {
    display: grid;
    gap: 1.5rem;
    padding: 1rem;
}

.topic-card {
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.topic-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
    border-color: var(--secondary-color);
}

.question-form {
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius);
    margin-top: 2rem;
}

/* Стили для вариантов ответов */
.option {
    margin: 1rem 0;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.option input[type='radio'] {
    display: none;
}

.option label {
    display: block;
    padding: 1rem 2rem;
    background: var(--background-light);
    color: #333;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.option label:hover {
    background: #e9ecef;
    transform: translateX(10px);
}

.option input[type='radio']:checked + label {
    background: var(--secondary-color);
    color: var(--text-color);
    font-weight: 500;
}

/* Кнопки */
.btn-quiz {
    background: var(--secondary-color);
    color: var(--text-color);
    border: none;
    padding: 15px 40px;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-quiz:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
    background: #45a049;
}

.btn-quiz:active {
    transform: translateY(1px);
}

.btn-quiz::after {
    content: "→";
    position: absolute;
    right: -20px;
    transition: all 0.3s ease;
    opacity: 0;
}

.btn-quiz:hover::after {
    right: 20px;
    opacity: 1;
}

/* Для кнопки Next Question */
.next-btn::after {
    content: "⇒";
}

/* Для кнопки завершения */
.finish-btn {
    background: #2196F3;
}

.finish-btn:hover {
    background: #1976D2;
}

.quiz-btn {
    background: var(--primary-color);
    color: var(--text-color);
    border: none;
    padding: 0.8rem 2rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.quiz-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Progress bar customization */
.progress {
    border-radius: 20px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.progress-bar {
    position: relative;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: width 0.5s ease-in-out;
}

.progress-bar::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: linear-gradient(
        135deg,
        rgba(255,255,255,0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255,255,255,0.15) 50%,
        rgba(255,255,255,0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 40px 40px;
    animation: progress-stripes 1s linear infinite;
}

@keyframes progress-stripes {
    from { background-position: 40px 0; }
    to { background-position: 0 0; }
}


/* Прогресс бар для правильных ответов*/
.progress-bar-finish {
    width: 100%;
    height: 20px;
    background: #e0e0e0;
    border-radius: 10px;
    margin: 20px 0;
    overflow: hidden;
}

.progress-bar-finish__progress {
    height: 100%;
    background: var(--secondary-color);
    transition: width 0.5s ease;
}

.highlight {
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1.2em;
}

/* Адаптивность */
@media (max-width: 768px) {
    .quiz-container {
        margin: 1rem;
        padding: 1rem;
    }
    
    .question-form {
        padding: 1rem;
    }
    
    .option label {
        padding: 0.8rem 1.5rem;
    }
}

/* Анимации */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.quiz-container {
    animation: slideIn 0.5s ease-out;
}