/* Mobile-first CSS стили */
:root {
    --primary-color: #243199;
    --accent-color: #babc51;
    --text-color: #243199;
    --bg-color: #f4f4f4;
    --white: #ffffff;
    --gray-light: #6c757d;
    --gray-dark: #5a6268;
    --success-color: #28a745;
    --border-radius: 8px;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Базовые стили */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 16px;
}

/* Заголовки */
.header {
    text-align: center;
    margin-bottom: 24px;
}

h1 {
    font-size: 1.75rem;
    margin: 0 0 8px 0;
    color: var(--primary-color);
    font-weight: 700;
}

.welcome {
    font-size: 1rem;
    color: var(--gray-light);
    margin: 0;
}

/* Сетка тестов */
.tests-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

/* Карточка теста */
.test-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px;
    transition: var(--transition);
}

.test-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.test-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

.test-header h2 {
    font-size: 1.25rem;
    margin: 0;
    color: var(--primary-color);
    font-weight: 600;
}

.test-badge {
    background: rgba(36, 49, 153, 0.1);
    color: var(--primary-color);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
    border: 1px solid rgba(36, 49, 153, 0.2);
}

.test-description {
    font-size: 0.9rem;
    color: var(--gray-light);
    margin: 0 0 16px 0;
    line-height: 1.5;
}

/* Статус теста */
.test-status {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding: 12px;
    border-radius: var(--border-radius);
}

.test-status.completed {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid rgba(40, 167, 69, 0.2);
}

.test-status.not-completed {
    background: rgba(108, 117, 125, 0.1);
    border: 1px solid rgba(108, 117, 125, 0.2);
}

.status-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.875rem;
}

.test-status.completed .status-icon {
    background: var(--success-color);
    color: var(--white);
}

.test-status.not-completed .status-icon {
    background: var(--gray-light);
    color: var(--white);
}

.status-text {
    flex: 1;
}

.status-text strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.status-text span {
    font-size: 0.8rem;
    color: var(--gray-light);
}

/* Кнопки */
.test-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn {
    display: inline-block;
    padding: 12px 16px;
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: #1e276c;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--accent-color);
    color: var(--white);
}

.btn-secondary:hover {
    background: #9da33c;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* Все результаты */
.all-results {
    text-align: center;
    margin-top: 24px;
}

/* Админ-секция */
.admin-section {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 2px solid var(--accent-color);
}

.btn-admin {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: var(--white);
    border: none;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-admin:hover {
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

/* Авторизация */
.auth-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 32px 20px;
    text-align: center;
    max-width: 400px;
    margin: 40px auto;
}

.auth-card h1 {
    margin-bottom: 16px;
}

.auth-card p {
    color: var(--gray-light);
    margin-bottom: 24px;
}

/* Альтернативная авторизация */
.auth-alternative {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(36, 49, 153, 0.1);
}

.alternative-text {
    color: var(--gray-light);
    font-size: 0.9rem;
    margin: 0;
}

.alternative-text a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.alternative-text a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Инструкции для входа через код */
.auth-instructions {
    text-align: left;
    margin-bottom: 24px;
    padding: 16px;
    background: rgba(36, 49, 153, 0.05);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.auth-instructions h3 {
    margin: 0 0 12px 0;
    font-size: 1rem;
    color: var(--primary-color);
}

.auth-instructions ol {
    margin: 0;
    padding-left: 20px;
    color: var(--gray-light);
    font-size: 0.9rem;
    line-height: 1.5;
}

.auth-instructions li {
    margin-bottom: 8px;
}

.auth-instructions a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.auth-instructions a:hover {
    text-decoration: underline;
}

.copyable-command {
    background: rgba(36, 49, 153, 0.1);
    color: var(--primary-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(36, 49, 153, 0.2);
}

.copyable-command:hover {
    background: rgba(36, 49, 153, 0.2);
    transform: translateY(-1px);
}

/* Форма ввода кода */
.code-form {
    text-align: left;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid rgba(36, 49, 153, 0.2);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(36, 49, 153, 0.1);
}

.form-group input::placeholder {
    color: var(--gray-light);
}

.auth-back {
    margin-top: 16px;
    text-align: center;
}

.auth-back a {
    color: var(--gray-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.auth-back a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* Сообщения об ошибках */
.error-message {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.2);
    border-radius: var(--border-radius);
    padding: 16px;
    margin-bottom: 20px;
    text-align: left;
}

.error-message p {
    margin: 0;
    color: #dc3545;
    font-weight: 500;
}

.auth-actions {
    text-align: center;
}

/* Планшеты */
@media (min-width: 768px) {
    .container {
        max-width: 720px;
        padding: 24px;
    }
    
    h1 {
        font-size: 2.25rem;
    }
    
    .welcome {
        font-size: 1.125rem;
    }
    
    .tests-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .test-header h2 {
        font-size: 1.5rem;
    }
    
    .test-description {
        font-size: 1rem;
    }
    
    .test-actions {
        flex-direction: row;
        gap: 12px;
    }
    
    .btn {
        flex: 1;
        font-size: 1rem;
    }
}

/* Десктоп */
@media (min-width: 1024px) {
    .container {
        max-width: 960px;
        padding: 32px;
    }
    
    .tests-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    
    .test-card {
        padding: 24px;
    }
    
    .auth-card {
        padding: 40px;
    }
}

/* Большие экраны */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* Футер */
.site-footer {
    background: var(--white);
    border-top: 1px solid rgba(36, 49, 153, 0.1);
    margin-top: 40px;
    padding: 24px 0;
}

.footer-content {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 16px;
    text-align: center;
}

.footer-content p {
    margin: 8px 0;
    font-size: 0.85rem;
    color: var(--gray-light);
    line-height: 1.4;
}

.footer-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-content a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Адаптивность футера */
@media (min-width: 768px) {
    .footer-content {
        max-width: 720px;
        padding: 0 24px;
    }
    
    .footer-content p {
        font-size: 0.9rem;
    }
}

@media (min-width: 1024px) {
    .footer-content {
        max-width: 960px;
        padding: 0 32px;
    }
    
    .site-footer {
        margin-top: 60px;
        padding: 32px 0;
    }
}

@media (min-width: 1200px) {
    .footer-content {
        max-width: 1140px;
    }
}