/* Hero Section */
.quiz-hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../assets/quiz-bg.webp');
    background-size: cover;
    background-position: center;
    height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding: 0 20px;
    margin-top: 80px;
}

.quiz-hero .hero-content {
    max-width: 800px;
}

.quiz-hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.quiz-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Quiz Section */
.quiz-section {
    padding: 60px 0;
    background-color: #f5f5f5;
    min-height: calc(100vh - 40vh - 80px);
}

/* Quiz Header */
.quiz-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
}

.page-language-switcher {
  display: flex;
  align-items: center;
}

.page-language-switcher .language-toggle {
    display: flex;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    padding: 3px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.page-language-switcher .lang-option {
    padding: 3px 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 0.8rem;
    font-weight: 500;
}

.page-language-switcher .lang-option.active {
    background: rgba(255, 255, 255, 0.9);
    color: #4CAF50;
}

.lang-btn-container {
  display: flex;
  align-items: center;
  background: #f5f5f5;
  border: 1px solid #ddd;
  border-radius: 20px;
  padding: 5px 15px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.lang-btn-container:hover {
  background: #e9e9e9;
}

.current-lang {
  font-weight: 500;
  color: #333;
}

.lang-btn {
    padding: 5px 15px;
    border-radius: 15px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.lang-btn.active {
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.lang-btn:hover {
    color: #4CAF50;
}

.lang-btn.active {
    color: white;
    background: #4CAF50;
}

.lang-btn:first-child {
    border-radius: 25px 0 0 25px;
}

.lang-btn:last-child {
    border-radius: 0 25px 25px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Filter Styles */
.filter-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    overflow: visible;
}

.filter-header {
    padding: 20px;
    background: #4CAF50;
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1.2rem;
}

.filter-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-content {
    padding: 20px;
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    overflow: visible;
}

.filter-content > div {
    flex: 1;
    min-width: 300px;
    position: relative;
}

.filter-content > div p {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    padding: 15px 20px;
    background: #f8f8f8;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.filter-content > div p:hover {
    border-color: #4CAF50;
    background: #f0f8f0;
}

.filter-city-buttons, .filter-difficulty-buttons {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    margin-top: 5px;
    padding: 10px;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 9999;
}

.filter-city-buttons.open, .filter-difficulty-buttons.open {
    display: block;
}

input[type="text"] {
    width: 100%;
    padding: 15px 20px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    background: #f8f8f8;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    box-sizing: border-box;
}

input[type="text"]:hover {
    border-color: #4CAF50;
    background: #f0f8f0;
}

input[type="text"]:focus {
    outline: none;
    border-color: #4CAF50;
    background: white;
}

/* Checkbox Grid */
.filter-city .checkbox-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    padding: 10px;
}

.filter-difficulty .checkbox-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 10px;
}



.checkbox-item {
    display: flex;
    align-items: center;
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
}

.checkbox-item:hover {
    border-color: #4CAF50;
    background: #f0f8f0;
}

.checkbox-item input[type="checkbox"] {
    margin-right: 8px;
    width: 16px;
    height: 16px;
    accent-color: #4CAF50;
}

.checkbox-item input[type="radio"] {
    margin-right: 8px;
    width: 16px;
    height: 16px;
    accent-color: #4CAF50;
}

.checkbox-item span {
    font-size: 0.9rem;
    color: #333;
    user-select: none;
}

.checkbox-item input[type="checkbox"]:checked + span {
    font-weight: 600;
    color: #4CAF50;
}

.checkbox-item input[type="radio"]:checked + span {
    font-weight: 600;
    color: #4CAF50;
}

/* Quiz Content */
.quiz-content {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 30px;
    min-height: 400px;
    transition: opacity 0.3s ease;
}

.quiz-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 340px;
    color: #666;
    text-align: center;
}

.quiz-placeholder i {
    font-size: 4rem;
    color: #4CAF50;
    margin-bottom: 20px;
}

.quiz-placeholder p {
    font-size: 1.2rem;
}

/* Quiz Questions */
.quiz-content p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #333;
}

.quiz-content input[type="radio"] {
    margin-right: 10px;
    margin-bottom: 15px;
}

.quiz-content label {
    display: block;
    margin-bottom: 15px;
    cursor: pointer;
    padding: 15px;
    border: 2px solid #eee;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.quiz-content label:hover {
    border-color: #4CAF50;
    background: #f9f9f9;
}

.quiz-content button {
    margin-top: 20px;
    padding: 12px 30px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

.quiz-content button:hover {
    background: #45a049;
}

/* Quiz Results */
.question label.correct {
    border-color: #4CAF50;
    background-color: #e8f5e8;
}

.question label.incorrect {
    border-color: #f44336;
    background-color: #ffeaea;
}

.question.unanswered label {
    border-color: #ff9800;
    background-color: #fff3e0;
}

.question label.correct input[type="radio"]:checked + span::after,
.question label.correct:has(input[type="radio"]:checked)::after {
    content: " ✓";
    color: #4CAF50;
    font-weight: bold;
}

.question label.incorrect input[type="radio"]:checked + span::after,
.question label.incorrect:has(input[type="radio"]:checked)::after {
    content: " ✗";
    color: #f44336;
    font-weight: bold;
}

/* Планшеты */
@media (max-width: 1024px) {
    .filter-content {
        gap: 25px;
        padding: 18px;
    }
    
    .filter-content > div {
        min-width: 280px;
    }
    
    .checkbox-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 9px;
    }
    
    .checkbox-item {
        padding: 9px;
    }
    
    .checkbox-item span {
        font-size: 0.85rem;
    }
    
    .filter-content > div p {
        font-size: 1.05rem;
        padding: 13px 18px;
    }
    
    input[type="text"] {
        padding: 13px 18px;
        font-size: 1.05rem;
    }
}

/* Мобильные устройства */
@media (max-width: 768px) {
    .quiz-hero h1 {
        font-size: 2rem;
    }
    
    .quiz-hero p {
        font-size: 1rem;
    }

    .quiz-header {
        justify-content: center;
        margin-bottom: 15px;
    }

    .page-language-switcher {
        transform: scale(0.9);
    }
    
    .filter-content {
        flex-direction: column;
        gap: 20px;
        padding: 15px;
    }
    
    .filter-content > div {
        min-width: auto;
    }
    
    .filter-city .checkbox-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        padding: 8px;
    }
    
    .checkbox-item {
        padding: 12px;
    }
    
    .quiz-content {
        padding: 20px;
    }
    
    .filter-header {
        padding: 15px;
        font-size: 1.1rem;
    }
    
    .filter-content > div p {
        font-size: 1rem;
        padding: 12px 15px;
    }
    
    input[type="text"] {
        padding: 12px 15px;
        font-size: 1rem;
    }
}

/* Маленькие мобильные устройства */
@media (max-width: 480px) {
    .quiz-hero {
        height: 30vh;
        padding: 0 15px;
    }
    
    .quiz-hero h1 {
        font-size: 1.5rem;
    }

    .quiz-hero p {
        font-size: 0.9rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .filter-header {
        font-size: 0.9rem;
        padding: 12px;
    }
    
    .filter-content {
        padding: 15px;
    }
    
    .filter-difficulty .checkbox-grid, .filter-city .checkbox-grid {
        grid-template-columns: 1fr;
    }
    
    .quiz-content {
        padding: 15px;
    }
}

/* Result Modal Styles */
.result-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.result-modal-content {
    background: white;
    border-radius: 12px;
    padding: 30px;
    max-width: 500px;
    width: 100%;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    animation: modalFadeIn 0.3s ease-out;
}

.result-modal h2 {
    color: #3498db;
    margin-bottom: 20px;
    font-size: 2rem;
    font-weight: 700;
}

.result-modal p {
    margin-bottom: 25px;
    color: #333;
    font-size: 1rem;
    line-height: 1.5;
}

.close-result-btn {
    padding: 12px 24px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 140px;
}

.close-result-btn:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

/* Certificate Modal Styles */
.certificate-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.certificate-modal-content {
    background: white;
    border-radius: 12px;
    padding: 30px;
    max-width: 500px;
    width: 100%;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.certificate-modal h2 {
    color: #4CAF50;
    margin-bottom: 20px;
    font-size: 2rem;
    font-weight: 700;
}

.certificate-modal p {
    margin-bottom: 15px;
    color: #333;
    font-size: 1rem;
    line-height: 1.5;
}

.certificate-modal form {
    margin-top: 25px;
}

.certificate-modal label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #333;
    text-align: left;
}

.certificate-modal input[type="text"] {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1rem;
    margin-bottom: 20px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

.certificate-modal input[type="text"]:focus {
    outline: none;
    border-color: #4CAF50;
    background: white;
}

.modal-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 25px;
}

.certificate-modal button {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 140px;
}

.certificate-modal button[type="submit"] {
    background: #4CAF50;
    color: white;
}

.certificate-modal button[type="submit"]:hover {
    background: #45a049;
    transform: translateY(-1px);
}

.certificate-modal .cancel-btn {
    background: #f5f5f5;
    color: #666;
    border: 2px solid #e0e0e0;
}

.certificate-modal .cancel-btn:hover {
    background: #e0e0e0;
    color: #333;
}

@media (max-width: 480px) {
    .certificate-modal-content {
        padding: 20px;
        margin: 10px;
    }
    
    .certificate-modal h2 {
        font-size: 1.5rem;
    }
    
    .modal-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .certificate-modal button {
        width: 100%;
    }
}

/* Certificate Info Styles */
.certificate-info {
    flex: 1;
    min-width: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.certificate-requirements {
    background: linear-gradient(135deg, #4CAF50, #2E7D32);
    color: white;
    border-radius: 8px;
    padding: 15px 25px;
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
    text-align: center;
    line-height: 1.4;
}

.certificate-requirements i {
    font-size: 1.2rem;
    color: #FFD700;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .certificate-info {
        min-width: 100%;
        margin-top: 15px;
    }
    
    .certificate-requirements {
        width: 100%;
        padding: 12px 20px;
        font-size: 0.9rem;
        gap: 8px;
    }
    
    .certificate-requirements i {
        font-size: 1rem;
    }
}