/* Problem-related styling */

.problem-container {
    padding: 0.75rem 0;
}

.problem-header {
    margin-bottom: 2rem;
}

.problem-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: #3a5bbf;
    margin-bottom: 0.8rem;
}

.problem-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.problem-meta-item {
    display: flex;
    align-items: center;
    margin-right: 1.2rem;
}

.problem-difficulty {
    font-weight: 500;
}

.problem-difficulty-easy {
    color: #28a745;
}

.problem-difficulty-medium {
    color: #fd7e14;
}

.problem-difficulty-hard {
    color: #dc3545;
}

.problem-description {
    margin-bottom: 2rem;
    line-height: 1.6;
}

.problem-section {
    margin-bottom: 1.5rem;
}

.problem-section-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: #495057;
}

.problem-section-header {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
    color: #3a5bbf;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e9ecef;
}

.problem-subsection-header {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 1.5rem 0 0.8rem;
    color: #495057;
}

.problem-example {
    background-color: #f8f9fa;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.problem-card {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.07);
    transition: all 0.3s ease-in-out;
    border-radius: 0.5rem;
    border: 0;
    overflow: hidden;
}

.problem-card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}

.problem-card-body {
    padding: 1.5rem;
}

.problem-form-group {
    margin-bottom: 1.5rem;
}

.problem-form-label {
    margin-bottom: 0.5rem;
    color: #495057;
    font-weight: 600;
    display: inline-block;
}

.problem-input-group {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    width: 100%;
}

.problem-input-group .input-group-text {
    background-color: #f8f9fa;
    border-right: none;
}

.problem-input-group .form-control {
    border-left: 0;
}

.problem-input-group:focus-within {
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.2);
}

.problem-input-group:focus-within .input-group-text,
.problem-input-group:focus-within .form-control {
    border-color: #86b7fe;
}

.problem-alert {
    border-left: 4px solid #dc3545;
    border-radius: 0.25rem;
    padding: 0.6rem 1rem;
    text-align: center;
    font-size: 0.9rem;
}

.problem-help-text {
    font-size: 0.85rem;
    margin-top: 0.25rem;
    color: #6c757d;
}

.problem-btn {
    padding: 0.5rem 2rem;
    font-weight: 500;
}

.problem-submit {
    margin-top: 2rem;
}

.problem-table {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 2rem;
}

.problem-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    padding: 0.75rem;
}

.problem-table tr {
    transition: background-color 0.2s;
}

.problem-table tr:hover {
    background-color: #f8f9fa;
}

.problem-status {
    font-weight: 500;
    text-align: center;
}

.problem-submissions-table {
    margin-top: 1rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    border-radius: 0.5rem;
    overflow: hidden;
}

.problem-submissions-table th {
    background-color: #f8f9fa;
    font-weight: 600;
}

.problem-category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.problem-category-section {
    margin-bottom: 2.5rem;
}

.problem-category-card {
    transition: all 0.3s ease;
    border: none;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.07);
}

.problem-category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.problem-card-img-container {
    height: 160px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
}

.problem-card-img-container img {
    max-height: 100%;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.problem-category-card:hover .problem-card-img-container img {
    transform: scale(1.05);
}

.problem-card-footer {
    background-color: transparent;
    border-top: 1px solid #f0f0f0;
    padding: 0.75rem 1.25rem;
    margin: 0;
    font-weight: 500;
}

.problem-navbar {
    margin-bottom: 1rem;
    border-bottom: 1px solid #dee2e6;
}

.problem-nav-link {
    color: #6c757d;
    font-weight: 500;
    border-radius: 0.25rem 0.25rem 0 0;
    padding: 0.5rem 1rem;
}

.problem-nav-link.active {
    color: #3a5bbf;
    border-bottom: 2px solid #3a5bbf;
    background-color: transparent;
}

.problem-nav-link:hover:not(.active) {
    color: #3a5bbf;
    background-color: #f8f9fa;
}

.problem-submission-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e9ecef;
}

.problem-verdict-container {
    display: flex;
    align-items: center;
    margin: 1rem 0;
}

.problem-verdict-label {
    font-weight: 600;
    margin-right: 1rem;
}

.problem-verdict {
    padding: 0.5rem 1.5rem;
    font-weight: bold;
    border-radius: 0.25rem;
    text-align: center;
    min-width: 100px;
}

.problem-verdict-ac {
    background-color: #d4edda;
    color: #155724;
}

.problem-verdict-ce {
    background-color: #fff3cd;
    color: #856404;
}

.problem-verdict-queue {
    background-color: #e2e3e5;
    color: #383d41;
}

.problem-verdict-error {
    background-color: #f8d7da;
    color: #721c24;
}

.problem-stats {
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
}

.problem-stat-item {
    display: flex;
    align-items: center;
}

.problem-stat-label {
    font-weight: 600;
    margin-right: 0.5rem;
}

.problem-stat-value {
    font-family: monospace;
    font-size: 1.1rem;
}

.problem-code-container {
    background-color: #f8f9fa;
    border-radius: 0.5rem;
    padding: 1rem;
    margin: 1rem 0;
    overflow: auto;
}

.problem-code-block {
    background-color: transparent;
    border: none;
    padding: 0;
    margin: 0;
    font-family: monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    white-space: pre-wrap;
}

.problem-error-block {
    background-color: #f8d7da;
    border-radius: 0.25rem;
    padding: 1rem;
    color: #721c24;
    font-family: monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
}

.problem-tests-table {
    margin-top: 1rem;
}

.problem-categories-divider {
    margin: 2rem 0;
    height: 2px;
    background-color: #f0f0f0;
}