:root {
    --primary-color: #115938; /* Темно-зеленый */
    --secondary-color: #24AF3A; /* Светло-зеленый */
    --accent-color: #F7F7F7; /* Светлый фон */
    --danger-color: #dc3545; /* Красный */
    --text-dark: #000000;
    --text-light: #FFFFFF;
    --border-color: #e0e0e0;
    --gray-color: #828282;
}

html, body {
    height: 100%;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--text-light);
    color: var(--text-dark);
    display: flex;
    flex-direction: column;
}

body {
    padding-bottom: 60px;
}

.container {
    min-height: 88%;
    display: flex;
    flex-direction: column;
    flex: 1 0 auto;
}

main {
    flex: 1;
}

.navbar {
    background-color: #115938 !important;
    border-bottom: 2px solid #115938 !important;
}

.navbar-brand,
.nav-link,
.navbar-text {
    color: #FFFFFF !important;
    text-decoration: none !important;
}

    .nav-link:hover,
    .nav-link:focus {
        color: #F7F7F7 !important;
        background-color: rgba(255, 255, 255, 0.1) !important;
        border-radius: 4px;
        text-decoration: none !important;
    }

    .navbar-brand.custom-brand {
        color: var(--primary-color) !important;
        text-decoration: none !important;
        cursor: default;
    }

/* Кнопки */
.btn-success {
    background-color: var(--secondary-color) !important;
    border-color: var(--primary-color) !important;
    color: var(--text-light) !important;
}
        .btn-primary:hover {
            color: var(--text-light) !important;
            text-decoration: none;
        }


.btn-primary {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: var(--text-light) !important;
}
    .btn-primary:hover {
        color: var(--text-light) !important;
    }

.btn-info {
    background-color: var(--accent-color) !important;
    border-color: var(--primary-color) !important;
    color: var(--text-dark) !important;
}

.btn-danger {
    background-color: var(--danger-color) !important;
    border-color: var(--danger-color) !important;
    color: var(--text-light) !important;
}

.btn-secondary {
    background-color: var(--gray-color) !important;
    border-color: var(--gray-color) !important;
    color: var(--text-light) !important;
}

    .btn-secondary:hover {
        color: var(--text-light) !important;
        text-decoration: none;
    }

.btn-custom {
    border: 1px solid var(--primary-color);
    color: var(--primary-color) !important;
    background-color: transparent;
    transition: all 0.3s ease;
    font-size: 0.875rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
}

    .btn-custom:hover:not(.btn-danger-custom) {
        background-color: var(--primary-color);
        color: var(--text-light) !important;
        border-color: var(--primary-color);
    }

.btn-danger-custom {
    border: 1px solid var(--danger-color);
    color: var(--danger-color) !important;
}

    .btn-danger-custom:hover {
        background-color: var(--danger-color);
        color: var(--text-light) !important;
        border-color: var(--danger-color);
    }

.btn-success:hover, .btn-success:focus {
    filter: brightness(0.9);
}

.btn-info:hover, .btn-info:focus {
    background-color: #e0e0e0 !important;
    color: var(--primary-color) !important;
}

/* Таблицы */
.table {
    background-color: var(--accent-color) !important;
    border-collapse: collapse;
}

    .table th {
        background-color: var(--secondary-color) !important;
        color: var(--text-light) !important;
        font-weight: bold;
        border-color: var(--primary-color) !important;
    }

    .table td, .table th {
        border: 1px solid var(--primary-color) !important;
        padding: 12px 15px;
        vertical-align: middle;
    }

/* Формы */
.form-control {
    border: 1px solid var(--primary-color) !important;
    background-color: var(--text-light) !important;
    color: var(--text-dark) !important;
}

    .form-control:focus {
        border-color: var(--secondary-color) !important;
        box-shadow: 0 0 0 0.2rem rgba(36, 175, 58, 0.25) !important;
    }

/* Предупреждения */
.alert {
    border: 1px solid var(--primary-color) !important;
}

.alert-success {
    background-color: #d4edda !important; 
    color: #155724 !important;
    border-color: #c3e6cb !important;
}

.alert-danger {
    background-color: #f8d7da !important;
    color: #721c24 !important;
    border-color: #f5c6cb !important;
}

/* Ссылки */
a {
    color: var(--secondary-color) !important;
    text-decoration: none;
}

    a:hover {
        color: var(--primary-color) !important;
        text-decoration: underline;
    }

/* Заголовки */
h1, h2, h3, h4, h5, h6 {
    color: var(--secondary-color) !important;
    margin-bottom: 1rem;
}

/* Подвал */
.footer {
    flex-shrink: 0;
    background-color: var(--primary-color) !important;
    color: var(--text-light) !important;
    text-align: center;
    padding: 15px 0;
    width: 100%;
    margin-top: auto;
}

footer.border-top {
    position: static !important;
}

/* Карточки */
.card {
    margin: 20px 0;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.card-header, .card-footer {
    background-color: var(--accent-color);
    border-bottom: 1px solid var(--border-color);
}

.rank-card {
    border: 2px dashed #ccc;
    transition: border-color 0.2s;
}

    .rank-card.drag-over {
        border-color: #007bff;
        background-color: rgba(0, 123, 255, 0.05);
    }

/* Оценки */
.grade-5 {
    background-color: #28a745;
    color: white;
    font-weight: bold;
}

.grade-4 {
    background-color: #ffc107;
    color: black;
    font-weight: bold;
}

.grade-3 {
    background-color: #fd7e14;
    color: white;
    font-weight: bold;
}

.grade-2 {
    background-color: #dc3545;
    color: white;
    font-weight: bold;
}

/* Средние оценки */
.avg-grade-5 {
    color: #28a745;
    font-weight: bold;
}

.avg-grade-4 {
    color: #ffc107;
    font-weight: bold;
}

.avg-grade-3 {
    color: #fd7e14;
    font-weight: bold;
}

.avg-grade-2 {
    color: #dc3545;
    font-weight: bold;
}

.badge {
    padding: 0.35em 0.6em;
    font-size: 0.85rem;
    border-radius: 0.25rem;
}

/* Элементы интерфейса */
.option-btn {
    transition: all 0.3s ease;
}

    .option-btn:hover {
        transform: scale(1.02);
    }

.draggable-answer {
    cursor: move;
    user-select: none;
    padding: 8px 12px;
    font-size: 0.9rem;
    background-color: var(--accent-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 5px;
}

/* Прогресс-бар */
.progress-container {
    width: 100%;
    background-color: #f3f3f3;
    border-radius: 5px;
    overflow: hidden;
    height: 20px;
    margin-bottom: 15px;
}

.progress-bar {
    height: 100%;
    background-color: var(--secondary-color);
    width: 0%;
    transition: width 1s linear;
}

/* Картинки вопросов */
.card-body img.img-fluid {
    margin-top: 15px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    max-width: 100%;
    height: auto;
}

.card-title {
    color: var(--primary-color) !important;
}
/* Предпросмотр в модальном окне */
#currentImagePreview {
    transition: all 0.3s ease;
    max-width: 100%;
    height: auto;
}

    #currentImagePreview:hover {
        transform: scale(1.05);
    }

.hover-bg-light:hover {
    background-color: #f8f9fa;
}