/* ============================================================
   Чистый светлый минимализм — публичная часть.
   Палитра: slate + синий акцент. Всё настроено через переменные.
   ============================================================ */

/* ===== Переменные и база ===== */
:root {
    --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, "Noto Sans", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

    --bs-body-font-family: var(--font-sans);

    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-active: #1e40af;
    --color-primary-soft: #eff6ff;
    --color-primary-border: #bfdbfe;

    --color-text: #0f172a;
    --color-text-body: #334155;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-border-soft: #f1f5f9;
    --color-bg-card: #ffffff;
    --color-bg-page: #f8fafc;
    --color-bg-slate: #f1f5f9;

    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05), 0 1px 3px 0 rgba(15, 23, 42, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.10), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --shadow-primary: 0 4px 10px -2px rgba(37, 99, 235, 0.30);

    --radius-sm: 0.375rem;
    --radius: 0.625rem;
    --radius-lg: 1rem;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-top: 60px;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-body);
    background: var(--color-bg-page);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--color-text);
    letter-spacing: -0.01em;
    font-weight: 700;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--color-primary-hover);
}

::selection {
    background: rgba(37, 99, 235, 0.2);
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Аккуратный скроллбар */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 999px;
    border: 2px solid var(--color-bg-page);
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* ===== Layout ===== */
.wrap {
    flex: 1 0 auto;
}

.container {
    max-width: 1200px;
}

.main-container {
    padding-top: 1.5rem;
    padding-bottom: 4rem;
}

.lead {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
}

/* ===== Навбар ===== */
.navbar {
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.125rem;
    letter-spacing: -0.02em;
    color: var(--color-text) !important;
}

.navbar-brand::before {
    content: "";
    display: inline-block;
    width: 0.625rem;
    height: 0.625rem;
    margin-right: 0.5rem;
    border-radius: 50%;
    vertical-align: middle;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.navbar .nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.5rem 0.875rem;
    border-radius: 0.5rem;
    color: var(--color-text-muted);
    transition: color 0.15s ease, background-color 0.15s ease;
}

.navbar-nav .nav-link {
    display: inline-flex;
    align-items: center;
}

.navbar .nav-link:hover {
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

.navbar .nav-link.active {
    color: var(--color-primary);
}

.navbar form.logout {
    display: flex;
    align-items: center;
    margin-bottom: 0;
}

.navbar form.logout .btn-link {
    --bs-btn-line-height: 1.6;
    --bs-btn-padding-x: 0.875rem;
    --bs-btn-padding-y: 0.5rem;
    color: var(--color-text-muted);
    font-weight: 500;
    text-decoration: none;
}

.navbar form.logout .btn-link:hover {
    color: var(--color-primary);
}

/* ===== Кнопки ===== */
.btn {
    border-radius: 0.5rem;
    font-weight: 500;
}

.btn-primary {
    --bs-btn-bg: var(--color-primary);
    --bs-btn-border-color: var(--color-primary);
    --bs-btn-hover-bg: var(--color-primary-hover);
    --bs-btn-hover-border-color: var(--color-primary-hover);
    --bs-btn-active-bg: var(--color-primary-active);
    --bs-btn-active-border-color: var(--color-primary-active);
    --bs-btn-focus-shadow-rgb: 37, 99, 235;
}

.btn-primary:hover {
    box-shadow: var(--shadow-primary);
}

.btn-read-more {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.4rem 1.1rem;
    border-radius: 999px;
}

/* ===== Формы ===== */
.form-control,
.form-select {
    border-color: var(--color-border);
    border-radius: var(--radius);
    padding: 0.625rem 0.875rem;
    color: var(--color-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.12);
}

.form-control::placeholder {
    color: #94a3b8;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-check .form-check-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.form-check-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.12);
}

/* ===== Flash-сообщения ===== */
.alert {
    border: 1px solid transparent;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
}

.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border-color: #a7f3d0;
}

.alert-danger {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}

.alert-info {
    background: var(--color-primary-soft);
    color: #1e40af;
    border-color: var(--color-primary-border);
}

/* ===== Карточки статей ===== */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

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

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

/* ===== Страница ошибки ===== */
.error-card {
    max-width: 560px;
    padding: 3rem 2.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.error-card .display-1 {
    font-size: clamp(4rem, 10vw, 6rem);
    line-height: 1;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 0.75rem;
}

.card-title a {
    color: var(--color-text);
    text-decoration: none;
}

.card-title a:hover {
    color: var(--color-primary);
}

.card-meta {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.card-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.card-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.card-text {
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: 1rem;
}

/* ===== Бейджи категорий ===== */
.badge.bg-primary {
    background: var(--color-primary-soft) !important;
    color: var(--color-primary) !important;
    font-weight: 600;
    font-size: 0.78125rem;
    padding: 0.38em 0.8em;
    border-radius: 999px;
}

.badge.bg-primary:hover {
    background: #dbeafe !important;
    opacity: 1;
}

.badge.bg-secondary {
    background: var(--color-bg-slate) !important;
    color: var(--color-text-muted) !important;
    font-weight: 600;
    border-radius: 999px;
}

/* ===== Шапка страницы (статья, категории, списки) ===== */
.article-header,
.page-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.article-header h1,
.page-header h1 {
    font-size: clamp(1.625rem, 3.2vw, 2.125rem);
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 1rem;
}

.page-header h1 {
    margin-bottom: 0.75rem;
}

.page-header .lead {
    margin-bottom: 0;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
}

.article-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.article-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.article-content {
    line-height: 1.85;
    font-size: 1.0625rem;
    color: var(--color-text-body);
}

.article-content h1 {
    font-size: 1.75rem;
    margin-top: 2.25rem;
    margin-bottom: 1rem;
}

.article-content h2 {
    font-size: 1.5rem;
    margin-top: 2.25rem;
    margin-bottom: 1rem;
}

.article-content h3 {
    font-size: 1.28rem;
    margin-top: 2rem;
    margin-bottom: 0.875rem;
}

.article-content h4 {
    font-size: 1.1rem;
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
}

.article-content h5 {
    font-size: 1rem;
    margin-top: 1.5rem;
    margin-bottom: 0.625rem;
}

.article-content h6 {
    font-size: 0.9rem;
    margin-top: 1.5rem;
    margin-bottom: 0.625rem;
}

.article-content ul,
.article-content ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.375rem;
}

.article-content p {
    margin-bottom: 1.25rem;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin: 1.25rem 0;
}

.article-content blockquote {
    border-left: 4px solid var(--color-primary);
    background: var(--color-primary-soft);
    padding: 1.125rem 1.5rem;
    margin: 1.75rem 0;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    color: var(--color-text-muted);
    font-style: italic;
}

.article-content blockquote p:last-child {
    margin-bottom: 0;
}

.article-content pre {
    background: #0f172a;
    color: #e2e8f0;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: 1.75rem 0;
    box-shadow: var(--shadow-sm);
}

.article-content code {
    font-family: var(--font-mono);
    font-size: 0.875em;
}

.article-content p code,
.article-content li code {
    background: var(--color-primary-soft);
    padding: 0.15em 0.45em;
    border-radius: 0.375rem;
    color: #1e40af;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9375rem;
}

.article-content th,
.article-content td {
    border: 1px solid var(--color-border);
    padding: 0.625rem 0.875rem;
    text-align: left;
}

.article-content thead th,
.article-content th {
    background: var(--color-bg-slate);
    font-weight: 600;
    color: var(--color-text);
}

.article-content tr:nth-child(even) td {
    background: #fcfcfd;
}

/* ===== Сайдбар ===== */
.sidebar .sidebar-widget {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.375rem 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.sidebar .sidebar-widget h5 {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 0.875rem;
    padding-bottom: 0.625rem;
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.sidebar .sidebar-widget h5::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 2.25rem;
    height: 2px;
    border-radius: 2px;
    background: var(--color-primary);
}

.sidebar .sidebar-widget ul {
    padding-left: 0;
    list-style: none;
    margin-bottom: 0;
}

.sidebar .sidebar-widget li {
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--color-border-soft);
}

.sidebar .sidebar-widget li:last-child {
    border-bottom: none;
}

.sidebar .sidebar-widget li a {
    color: var(--color-text);
    font-size: 0.875rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 0.125rem;
    transition: color 0.15s ease, transform 0.15s ease;
}

.sidebar .sidebar-widget li a:hover {
    color: var(--color-primary);
    transform: translateX(3px);
}

/* ===== Комментарии ===== */
.comments-section h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.comments-section .comment-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.15s ease;
}

.comments-section .comment-card:hover {
    border-color: var(--color-primary-border);
}

.comments-section .comment-card.comment-flash {
    animation: comment-flash 2s ease;
}

@keyframes comment-flash {
    0% {
        background-color: rgba(255, 193, 7, 0.35);
    }
    100% {
        background-color: var(--color-bg-card);
    }
}

.comments-section .comment-card .comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.comments-section .comment-card .comment-author {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
}

.comments-section .comment-card .comment-time {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.comments-section .comment-card .comment-text {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-text-body);
    margin-bottom: 0.5rem;
}

.comments-section .comment-nested {
    margin-left: 1.5rem;
    padding-left: 1rem;
    border-left: 3px solid var(--color-border);
}

.comments-section .comment-children {
    margin-left: -1.25rem;
    margin-top: 1rem;
}

.comments-section .reply-btn {
    font-size: 0.8rem;
    padding: 0.2rem 0.75rem;
    border-radius: 999px;
}

.comments-section .comment-form {
    background: var(--color-bg-slate);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.375rem;
    margin-top: 1.25rem;
}

.comments-section .comment-form h5 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

/* ===== Формы (login, signup, reset) ===== */
.auth-card {
    max-width: 440px;
    margin: 2rem auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.auth-card .card-header {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: #fff;
    text-align: center;
    padding: 1.5rem 1rem;
    border: none;
}

.auth-card .card-header h1 {
    font-size: 1.375rem;
    font-weight: 700;
    margin: 0;
    color: #fff;
}

.auth-card .card-body {
    padding: 1.625rem 1.75rem;
}

.auth-card .card-footer {
    background: transparent;
    border-top: 1px solid var(--color-border);
    padding: 1rem 1.75rem 1.5rem;
}

.card .card-header {
    background: var(--color-bg-slate);
    border-bottom: 1px solid var(--color-border);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 1.25rem 1.5rem;
}

.card .card-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

/* ===== Пагинация ===== */
.pagination {
    flex-wrap: wrap;
    justify-content: center;
}

.pagination .page-item .page-link,
.pagination .page-item.disabled > span {
    border: none;
    border-radius: 999px;
    margin: 0 0.2rem;
    min-width: 2.25rem;
    padding: 0.375rem 0.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    background: transparent;
    transition: background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.pagination .page-item.active .page-link {
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-primary);
}

.pagination .page-item .page-link:hover {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.pagination .page-item.disabled .page-link,
.pagination .page-item.disabled > span {
    color: #cbd5e1;
    background: transparent;
}

/* ===== Страница категорий ===== */
.category-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-border);
}

.category-card .card-title a {
    font-size: 1.1rem;
    color: var(--color-text);
}

.category-card .card-title a:hover {
    color: var(--color-primary);
}

/* ===== Футер ===== */
.footer {
    flex-shrink: 0;
    background: #0f172a;
    color: #94a3b8;
    padding: 2.25rem 0;
    border-top: 3px solid transparent;
    border-image: linear-gradient(90deg, #1e3a8a, #2563eb, #60a5fa) 1;
}

.footer p {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: #94a3b8;
}

.footer a {
    color: #cbd5e1;
}

.footer a:hover {
    color: #fff;
}

/* ===== Модалки ===== */
.modal-content {
    background: var(--color-bg-card);
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--color-border);
    padding: 1.25rem 1.5rem;
}

.modal-header .modal-title {
    font-weight: 700;
    color: var(--color-text);
}

.modal-footer {
    border-top: 1px solid var(--color-border);
}

/* ===== Модалка поиска ===== */
#searchModal .modal-header {
    border-bottom: 1px solid var(--color-border);
}

#searchModal .input-group-text {
    background: var(--color-bg-card);
    border-right: none;
    color: var(--color-text-muted);
}

#searchModal .form-control {
    border-left: none;
}

#searchModal .form-control:focus {
    box-shadow: none;
    border-color: var(--color-border);
}

#searchModal .form-control:focus + .input-group-text,
#searchModal .form-control:focus ~ .input-group-text {
    border-color: var(--color-primary);
}

.search-loading {
    padding: 1.5rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.search-empty {
    padding: 2rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.search-results-list {
    display: flex;
    flex-direction: column;
}

.search-result-item {
    display: block;
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--color-border);
    text-decoration: none;
    color: var(--color-text);
    transition: background 0.15s ease;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: var(--color-primary-soft);
    color: var(--color-text);
    text-decoration: none;
}

.search-result-title {
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: 0.25rem;
    color: var(--color-text);
}

.search-result-short {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: 0.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.search-result-meta {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.search-result-item mark {
    background: #fef08a;
    color: inherit;
    padding: 0 0.1em;
    border-radius: 0.15em;
}

/* ===== Модалки авторизации ===== */
.auth-modal-errors .alert {
    margin-bottom: 1rem;
}

.auth-switch-link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.875rem;
}

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

/* ===== Адаптивность ===== */
@media (max-width: 768px) {
    .article-header h1 {
        font-size: 1.5rem;
    }

    .article-content {
        font-size: 1rem;
    }

    .sidebar .sidebar-widget {
        margin-top: 1rem;
    }

    .comments-section .comment-nested {
        margin-left: 0.75rem;
        padding-left: 0.75rem;
    }

    .card .card-body {
        padding: 1.25rem;
    }
}

@media (max-width: 576px) {
    .card-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .article-meta {
        gap: 0.625rem 1rem;
    }

    .pagination .page-item .page-link,
    .pagination .page-item.disabled > span {
        min-width: 2rem;
        padding: 0.25rem 0.5rem;
        margin: 0.1rem 0.15rem;
        font-size: 0.85rem;
    }
}