/* =====================================================================
   RamilTech Theme — screen.css
   Clean IT blog & services theme
   ===================================================================== */

/* ── Custom properties ─────────────────────────────────────────────── */
:root {
    --color-primary:       #4db3a4;
    --color-primary-dark:  #3d9b8f;
    --color-primary-light: #6ec9bd;
    --color-bg:            #ffffff;
    --color-bg-alt:        #f8fafc;
    --color-bg-dark:       #0f172a;
    --color-text:          #1e293b;
    --color-text-muted:    #64748b;
    --color-border:        #e2e8f0;
    --color-code-bg:       #0f172a;
    --color-code-text:     #e2e8f0;
    --color-success:       #10b981;

    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;

    --max-width:     1200px;
    --content-width:  780px;
    --gutter:          1.5rem;
    --radius:         0.5rem;
    --radius-lg:      1rem;
    --shadow-sm:      0 1px 3px rgba(0,0,0,.08);
    --shadow-md:      0 4px 16px rgba(0,0,0,.10);
    --shadow-lg:      0 10px 40px rgba(0,0,0,.14);

    --header-height: 64px;
    --transition:    0.2s ease;
}

/* ── Dark mode ────────────────────────────────────────────────────── */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg:            #0f172a;
        --color-bg-alt:        #1e293b;
        --color-text:          #e2e8f0;
        --color-text-muted:    #94a3b8;
        --color-border:        #334155;
        --color-code-bg:       #1e293b;
        --shadow-sm:           0 1px 3px rgba(0,0,0,.3);
        --shadow-md:           0 4px 16px rgba(0,0,0,.4);
        --shadow-lg:           0 10px 40px rgba(0,0,0,.5);
    }
    :root:not([data-theme="light"]) .site-header {
        background: rgba(15,23,42,.92);
    }
    :root:not([data-theme="light"]) .post-tag {
        color: var(--color-primary-light);
    }
}
[data-theme="dark"] {
    --color-bg:            #0f172a;
    --color-bg-alt:        #1e293b;
    --color-text:          #e2e8f0;
    --color-text-muted:    #94a3b8;
    --color-border:        #334155;
    --color-code-bg:       #1e293b;
    --shadow-sm:           0 1px 3px rgba(0,0,0,.3);
    --shadow-md:           0 4px 16px rgba(0,0,0,.4);
    --shadow-lg:           0 10px 40px rgba(0,0,0,.5);
}
[data-theme="dark"] .site-header {
    background: rgba(15,23,42,.92);
}
[data-theme="dark"] .post-tag {
    color: var(--color-primary-light);
}

/* Theme toggle button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: color var(--transition), border-color var(--transition);
}
.theme-toggle:hover { color: var(--color-text); border-color: var(--color-text-muted); }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-toggle .icon-sun  { display: block; }
    :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

/* ── Search trigger ───────────────────────────────────────────────── */
.search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: color var(--transition), border-color var(--transition);
}
.search-toggle:hover { color: var(--color-text); border-color: var(--color-text-muted); }

/* ── Toast notifications ──────────────────────────────────────────── */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.toast {
    padding: 0.75rem 1.25rem;
    background: var(--color-bg-dark);
    color: #fff;
    border-radius: var(--radius);
    font-size: 0.875rem;
    box-shadow: var(--shadow-md);
    animation: toast-in 0.3s ease;
    max-width: 320px;
}
.toast--success { border-left: 3px solid var(--color-success); }
.toast--error   { border-left: 3px solid #ef4444; }
@keyframes toast-in {
    from { opacity: 0; transform: translateY(1rem); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Table of contents ────────────────────────────────────────────── */
.toc-wrapper {
    display: none;
}
.toc-wrapper.has-toc {
    display: block;
    max-width: var(--content-width);
    margin: 0 auto 2rem;
    padding: 0 var(--gutter);
}
.toc {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    background: var(--color-bg-alt);
}
.toc__title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
}
.toc__list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.toc__list li {
    margin: 0.25rem 0;
}
.toc__list a {
    display: block;
    padding: 0.2rem 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    transition: color var(--transition);
    border-left: 2px solid transparent;
    padding-left: 0.75rem;
}
.toc__list a:hover,
.toc__list a.active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
}
.toc__list .toc-h3 {
    padding-left: 1.5rem;
    font-size: 0.8125rem;
}

/* ── Comments section ─────────────────────────────────────────────── */
.post-comments {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 2rem var(--gutter) 3rem;
}

/* ── Reset ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}
img, video, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; }

/* ── Container ─────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

/* ── Buttons ───────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
    text-decoration: none;
}
.btn:focus-visible { outline: 3px solid var(--color-primary-light); outline-offset: 2px; }

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }

.btn-muted {
    background: transparent;
    color: var(--color-text-muted);
    border-color: var(--color-border);
}
.btn-muted:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-sm  { padding: 0.4rem 0.875rem; font-size: 0.875rem; }
.btn-lg  { padding: 0.875rem 1.75rem; font-size: 1.0625rem; }

/* ── Tags / labels ─────────────────────────────────────────────────── */
.post-tag {
    display: inline-block;
    padding: 0.2rem 0.625rem;
    background: color-mix(in srgb, var(--color-primary) 10%, transparent);
    color: var(--color-primary-dark);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    transition: background var(--transition);
}
.post-tag:hover { background: color-mix(in srgb, var(--color-primary) 20%, transparent); }

/* ── Section titles ────────────────────────────────────────────────── */
.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.75rem;
    color: var(--color-text);
}
.section-title--center { text-align: center; }

/* ═══════════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════════ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.site-logo { display: flex; align-items: center; flex-shrink: 0; }
.site-logo__text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.03em;
}
.site-logo img { height: 36px; width: auto; }

.site-nav { margin-inline-start: auto; }
.site-nav__list { display: flex; align-items: center; gap: 0.25rem; }
.site-nav__link {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition), background var(--transition);
}
.site-nav__link:hover, .site-nav__link--active { color: var(--color-text); background: var(--color-bg-alt); }

.site-header__actions { display: flex; align-items: center; gap: 0.75rem; }

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    display: block;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* ═══════════════════════════════════════════════════════════════════
   FEED HEADER (compact, Habr-style)
   ═══════════════════════════════════════════════════════════════════ */
.feed-header {
    padding: 2.5rem 0 1.5rem;
    border-bottom: 1px solid var(--color-border);
}
.feed-header__title {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: 0.375rem;
}
.feed-header__desc {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ═══════════════════════════════════════════════════════════════════
   POSTS FEED (Habr/vc.ru style)
   ═══════════════════════════════════════════════════════════════════ */
.posts-section { padding: 1.5rem 0 4rem; }

.posts-feed {
    display: flex;
    flex-direction: column;
}

/* Also support old grid class for related posts */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}
.posts-grid--3col { grid-template-columns: repeat(3, 1fr); }

/* ── Post card (horizontal, Habr-style) ───────────────────────────── */
.post-card {
    display: flex;
    flex-direction: row;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
    background: transparent;
    transition: background var(--transition);
}
.post-card:first-child { padding-top: 1.5rem; }
.post-card:hover { background: var(--color-bg-alt); }

.post-card__content {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    flex: 1;
    min-width: 0;
}

.post-card__meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}
.post-card__author {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-weight: 500;
    color: var(--color-primary);
}
.post-card__avatar { width: 20px; height: 20px; border-radius: 50%; object-fit: cover; }
.post-card__date::before,
.post-card__reading-time::before { content: '·'; margin-right: 0.5rem; }

.post-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.35;
    margin: 0.125rem 0;
}
.post-card__title a { transition: color var(--transition); }
.post-card__title a:hover { color: var(--color-primary); }

.post-card__excerpt {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-top: 0.375rem;
}
.post-card__tag-link {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    padding: 0.125rem 0.5rem;
    border-radius: 100px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    transition: color var(--transition), border-color var(--transition);
}
.post-card__tag-link:hover { color: var(--color-primary); border-color: var(--color-primary); }

.post-card__image-link {
    display: block;
    flex-shrink: 0;
    width: 180px;
    height: 140px;
    border-radius: var(--radius);
    overflow: hidden;
    align-self: center;
}
.post-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.post-card__image-link:hover .post-card__image { transform: scale(1.04); }

/* Post cards inside grid (related posts) keep vertical layout */
.posts-grid .post-card {
    flex-direction: column;
    gap: 0;
    padding: 0;
    border-bottom: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.posts-grid .post-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); background: var(--color-bg); }
.posts-grid .post-card__image-link { width: 100%; height: auto; aspect-ratio: 16 / 9; border-radius: 0; }
.posts-grid .post-card__content { padding: 1.25rem; }
.posts-grid .post-card__title { font-size: 1.0625rem; }

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    padding: 2rem 0 0;
}
.pagination a { display: inline-flex; }
.older-posts, .newer-posts {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    border: 2px solid var(--color-border);
    color: var(--color-text-muted);
    text-decoration: none;
    transition: border-color var(--transition), color var(--transition);
}
.older-posts:hover, .newer-posts:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ═══════════════════════════════════════════════════════════════════
   NEWSLETTER
   ═══════════════════════════════════════════════════════════════════ */
.newsletter-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: 5rem 0;
    color: #fff;
}
.newsletter-section__inner { text-align: center; max-width: 560px; margin-inline: auto; }
.newsletter-section__title { font-size: 2rem; font-weight: 800; margin-bottom: 0.75rem; }
.newsletter-section__desc { font-size: 1.0625rem; opacity: 0.85; margin-bottom: 2rem; }

.newsletter-form { display: flex; gap: 0.75rem; max-width: 440px; margin-inline: auto; }
.newsletter-form__input {
    flex: 1;
    padding: 0.6875rem 1rem;
    border: 2px solid rgba(255,255,255,.35);
    border-radius: var(--radius);
    background: rgba(255,255,255,.15);
    color: #fff;
    font-size: 0.9375rem;
    transition: border-color var(--transition);
}
.newsletter-form__input::placeholder { color: rgba(255,255,255,.6); }
.newsletter-form__input:focus { outline: none; border-color: rgba(255,255,255,.8); }
.newsletter-form .btn-primary {
    background: #fff;
    color: var(--color-primary-dark);
    border-color: #fff;
    flex-shrink: 0;
}
.newsletter-form .btn-primary:hover { background: #f0f4ff; }
.newsletter-form__note { margin-top: 0.75rem; font-size: 0.875rem; opacity: 0.7; }

/* ═══════════════════════════════════════════════════════════════════
   ARTICLE (POST)
   ═══════════════════════════════════════════════════════════════════ */
.post-header {
    padding: 3.5rem 0 2.5rem;
    max-width: var(--content-width);
}
.post-header .container { max-width: var(--content-width); }

.post-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }

.post-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.post-excerpt {
    font-size: 1.1875rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: 1.5rem;
}

.post-byline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border);
}
.post-byline__author { display: flex; align-items: center; gap: 0.875rem; }
.post-byline__avatar {
    width: 44px; height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border);
}
.post-byline__name { font-weight: 700; font-size: 0.9375rem; display: block; }
.post-byline__name:hover { color: var(--color-primary); }
.post-byline__meta { font-size: 0.875rem; color: var(--color-text-muted); }
.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    transition: color var(--transition), border-color var(--transition);
}
.share-btn:hover { color: var(--color-primary); border-color: var(--color-primary); }

.post-feature-image {
    max-width: 860px;
    margin: 0 auto 3rem;
    padding-inline: var(--gutter);
}
.post-feature-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}
.post-feature-image figcaption {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 0.75rem;
}

/* ── Ghost card width helpers ─────────────────────────────────────── */
.kg-width-wide {
    max-width: min(1040px, calc(100vw - 2 * var(--gutter)));
    margin-left: auto;
    margin-right: auto;
}
.kg-width-full {
    max-width: none;
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
}

/* ── Prose (article body) ──────────────────────────────────────────── */
.prose {
    max-width: var(--content-width);
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-text);
    padding-bottom: 3rem;
}

.prose h2, .prose h3, .prose h4, .prose h5, .prose h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-top: 2.5em;
    margin-bottom: 0.75em;
    letter-spacing: -0.02em;
}
.prose h2 { font-size: 1.625rem; }
.prose h3 { font-size: 1.25rem; }
.prose h4 { font-size: 1.0625rem; }

.prose p { margin-bottom: 1.5em; }

.prose a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--color-primary-dark); }

.prose ul, .prose ol {
    margin-bottom: 1.5em;
    padding-left: 1.5rem;
    list-style: revert;
}
.prose li { margin-bottom: 0.4em; }

.prose blockquote {
    margin: 2em 0;
    padding: 1.25rem 1.75rem;
    border-left: 4px solid var(--color-primary);
    background: color-mix(in srgb, var(--color-primary) 6%, var(--color-bg));
    border-radius: 0 var(--radius) var(--radius) 0;
    font-style: italic;
    color: var(--color-text-muted);
}
.prose blockquote p { margin-bottom: 0; }

.prose hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 3em 0;
}

.prose img {
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin: 1.5em 0;
}

.prose figure { margin: 2em 0; }
.prose figcaption { font-size: 0.875rem; color: var(--color-text-muted); text-align: center; margin-top: 0.5em; }

/* Code blocks */
.prose code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: color-mix(in srgb, var(--color-primary) 8%, var(--color-bg));
    color: var(--color-primary-dark);
    padding: 0.15em 0.45em;
    border-radius: 0.25rem;
    border: 1px solid color-mix(in srgb, var(--color-primary) 15%, transparent);
}

.prose pre {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    background: var(--color-code-bg);
    color: var(--color-code-text);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: 1.75em 0;
    position: relative;
    line-height: 1.7;
    box-shadow: var(--shadow-md);
}
.prose pre code {
    background: none;
    color: inherit;
    padding: 0;
    border: none;
    font-size: inherit;
}

/* Copy-code button (added by JS) */
.copy-code-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.25rem 0.625rem;
    background: rgba(255,255,255,.12);
    color: rgba(255,255,255,.7);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition);
}
.copy-code-btn:hover { background: rgba(255,255,255,.22); color: #fff; }
.copy-code-btn.copied { color: #6ee7b7; }

/* Tables */
.prose table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 0.9375rem; }
.prose th {
    background: var(--color-bg-alt);
    font-weight: 700;
    text-align: left;
    padding: 0.75rem 1rem;
    border-bottom: 2px solid var(--color-border);
}
.prose td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--color-border); }
.prose tr:hover td { background: var(--color-bg-alt); }

/* Koenig editor cards */
.kg-card { margin: 2em 0; }
.kg-image-card img { border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.kg-gallery-card .kg-gallery-container { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.kg-gallery-image img { border-radius: var(--radius); object-fit: cover; }
.kg-bookmark-card { border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.kg-callout-card {
    display: flex;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    border-left: 4px solid var(--color-primary);
}
.kg-video-card video { border-radius: var(--radius); width: 100%; }
.kg-embed-card { margin: 2em 0; }

/* Post footer */
.post-footer { padding: 2rem 0; border-top: 1px solid var(--color-border); }
.post-footer__tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* Author bio */
.author-bio {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 2rem;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    margin: 2rem auto;
    max-width: var(--content-width);
}
.author-bio__avatar { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.author-bio__name { font-size: 1.0625rem; font-weight: 700; margin-bottom: 0.375rem; }
.author-bio__name a:hover { color: var(--color-primary); }
.author-bio__text { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.65; margin-bottom: 0.75rem; }
.author-bio__link { font-size: 0.875rem; color: var(--color-primary); font-weight: 600; }

/* Members gate (removed — all posts public) */

/* Related posts */
.related-posts { padding: 3rem 0 4rem; background: var(--color-bg-alt); }
.related-posts .posts-grid--3col { gap: 1.5rem; }

/* ═══════════════════════════════════════════════════════════════════
   PAGE (static)
   ═══════════════════════════════════════════════════════════════════ */
.page-header {
    padding: 3.5rem 0 2.5rem;
    max-width: var(--content-width);
}
.page-title { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 1rem; }
.page-excerpt { font-size: 1.1875rem; color: var(--color-text-muted); line-height: 1.65; }

/* ═══════════════════════════════════════════════════════════════════
   SERVICES PAGE
   ═══════════════════════════════════════════════════════════════════ */
.services-hero {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1e1b4b 100%);
    color: #fff;
    padding: 6rem 0;
    text-align: center;
}
.services-hero__inner { max-width: 640px; margin-inline: auto; }
.services-hero__title { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 1rem; }
.services-hero__lead { font-size: 1.1875rem; opacity: 0.85; margin-bottom: 2.5rem; line-height: 1.65; }
.services-hero .btn-primary {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    font-size: 1.0625rem;
    padding: 0.875rem 2rem;
}

.services-content { padding: 3rem 0; }

.services-grid-section { padding: 4rem 0; }
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    align-items: start;
}

.service-card {
    position: relative;
    padding: 2rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: box-shadow var(--transition), transform var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.service-card--featured {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, #fafbff 0%, #f0f4ff 100%);
    box-shadow: 0 4px 20px color-mix(in srgb, var(--color-primary) 20%, transparent);
}
.service-card__badge {
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.2rem 0.875rem;
    border-radius: 100px;
}
.service-card__icon { font-size: 2.25rem; line-height: 1; }
.service-card__title { font-size: 1.25rem; font-weight: 700; }
.service-card__desc { color: var(--color-text-muted); line-height: 1.65; font-size: 0.9375rem; }
.service-card__features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}
.service-card__features li {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    padding-left: 1.25rem;
    position: relative;
}
.service-card__features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}
.service-card .btn { align-self: flex-start; margin-top: auto; }

/* Process section */
.process-section { padding: 5rem 0; background: var(--color-bg-alt); }
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 2.5rem;
}
.process-step { text-align: center; padding: 1.5rem; }
.process-step__num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary-light);
    line-height: 1;
    margin-bottom: 1rem;
    font-variant-numeric: tabular-nums;
}
.process-step h3 { font-size: 1.0625rem; font-weight: 700; margin-bottom: 0.5rem; }
.process-step p { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.6; }

/* Contact section */
.contact-section { padding: 5rem 0; background: var(--color-bg-dark); color: #fff; }
.contact-section__inner { text-align: center; max-width: 560px; margin-inline: auto; }
.contact-section__title { font-size: 2rem; font-weight: 800; margin-bottom: 0.75rem; }
.contact-section__desc { opacity: 0.8; font-size: 1.0625rem; margin-bottom: 2rem; }
.contact-section .btn-primary { background: var(--color-primary-light); border-color: var(--color-primary-light); }
.contact-section__note { margin-top: 1.25rem; opacity: 0.6; font-size: 0.9375rem; }
.contact-section__note a { color: var(--color-primary-light); text-decoration: underline; }

/* ═══════════════════════════════════════════════════════════════════
   TAG / AUTHOR HEADERS
   ═══════════════════════════════════════════════════════════════════ */
.tag-header, .author-header {
    padding: 3.5rem 0 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.tag-header__image { width: 80px; height: 80px; border-radius: var(--radius-lg); object-fit: cover; }
.tag-header__title { font-size: 2rem; font-weight: 800; }
.tag-header__desc { font-size: 1.0625rem; color: var(--color-text-muted); max-width: 520px; }
.tag-header__count { font-size: 0.875rem; color: var(--color-text-muted); }

.author-header { flex-direction: row; align-items: flex-start; gap: 1.75rem; }
.author-header__avatar { width: 96px; height: 96px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.author-header__name { font-size: 1.75rem; font-weight: 800; margin-bottom: 0.5rem; }
.author-header__bio { font-size: 1.0625rem; color: var(--color-text-muted); max-width: 520px; margin-bottom: 0.5rem; }
.author-header__location { font-size: 0.9375rem; color: var(--color-text-muted); margin-bottom: 0.5rem; }

/* ═══════════════════════════════════════════════════════════════════
   ERROR PAGE
   ═══════════════════════════════════════════════════════════════════ */
.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--color-bg);
}
.error-content { text-align: center; padding: 2rem; }
.error-logo { font-size: 1.25rem; font-weight: 800; color: var(--color-text); display: inline-block; margin-bottom: 2rem; }
.error-code { font-size: 6rem; font-weight: 800; color: var(--color-primary); letter-spacing: -0.05em; line-height: 1; }
.error-message { font-size: 1.25rem; color: var(--color-text-muted); margin: 0.75rem 0 2rem; }

/* ═══════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════ */
.site-footer { background: var(--color-bg-alt); border-top: 1px solid var(--color-border); }
.site-footer__inner {
    display: flex;
    gap: 4rem;
    padding: 3rem 0;
    align-items: flex-start;
}
.site-footer__brand { max-width: 260px; }
.site-footer__brand .site-logo__text { font-size: 1.125rem; font-weight: 800; }
.site-footer__desc { font-size: 0.9375rem; color: var(--color-text-muted); margin-top: 0.75rem; line-height: 1.6; }
.site-footer__nav .site-nav__list { flex-direction: column; gap: 0.25rem; }
.site-footer__link { font-size: 0.9375rem; color: var(--color-text-muted); transition: color var(--transition); }
.site-footer__link:hover { color: var(--color-primary); }
.site-footer__bottom {
    border-top: 1px solid var(--color-border);
    padding: 1.25rem 0;
}
.site-footer__bottom .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.site-footer__copyright { font-size: 0.875rem; color: var(--color-text-muted); }
.site-footer__copyright a { color: var(--color-text-muted); text-decoration: underline; }
.site-footer__social { display: flex; gap: 0.75rem; }
.site-footer__social a { color: var(--color-text-muted); transition: color var(--transition); }
.site-footer__social a:hover { color: var(--color-primary); }

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 960px) {
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .posts-grid--3col { grid-template-columns: repeat(2, 1fr); }
    .site-footer__inner { flex-direction: column; gap: 2rem; }
    .post-card__image-link { width: 150px; height: 110px; }

    /* Games — tablet */
    .game-layout { grid-template-columns: 190px 1fr; gap: 1.75rem; }
}

@media (max-width: 640px) {
    :root { --gutter: 1rem; }
    .site-nav { display: none; }
    .site-nav.is-open {
        display: block;
        position: fixed;
        top: var(--header-height);
        left: 0; right: 0; bottom: 0;
        background: var(--color-bg);
        padding: 1.5rem;
        border-top: 1px solid var(--color-border);
        z-index: 99;
        overflow-y: auto;
    }
    .site-nav.is-open .site-nav__list { flex-direction: column; gap: 0; }
    .site-nav.is-open .site-nav__link { display: block; padding: 0.875rem 0.5rem; font-size: 1.0625rem; border-bottom: 1px solid var(--color-border); }
    .nav-toggle { display: flex; }
    .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
    .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .process-steps { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .posts-grid--3col { grid-template-columns: 1fr; }
    .author-bio { flex-direction: column; gap: 1rem; }
    .post-byline { flex-direction: column; align-items: flex-start; }
    .author-header { flex-direction: column; }

    /* Feed cards stack on mobile */
    .post-card { flex-direction: column; gap: 0.75rem; }
    .post-card__image-link { width: 100%; height: 180px; border-radius: var(--radius); }
    .post-card__title { font-size: 1.125rem; }

    /* Games — mobile */
    .game-layout    { grid-template-columns: 1fr; gap: 1.5rem; }
    .game-sidebar   { position: static; }
    .snake-dpad     { display: block; }
    .schulte-cell   { font-size: 1rem; }
    .g2048-cell     { font-size: 1.25rem; }
    .g2048-cell.v128, .g2048-cell.v256, .g2048-cell.v512 { font-size: 1rem; }
    .g2048-cell.v1024, .g2048-cell.v2048 { font-size: 0.85rem; }
}

/* ═══════════════════════════════════════════════════════════════════
   GAMES PAGE
   ═══════════════════════════════════════════════════════════════════ */

/* Hero */
.games-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #fff;
    padding: 4rem 0 3rem;
    text-align: center;
}
.games-hero__inner { max-width: 580px; margin-inline: auto; }
.games-hero__title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.75rem;
}
.games-hero__lead { font-size: 1.0625rem; opacity: 0.85; line-height: 1.6; }

/* Section */
.games-section { padding: 3rem 0 5rem; }

/* Tabs */
.games-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 2.5rem;
    border-bottom: 2px solid var(--color-border);
}
.game-tab {
    padding: 0.65rem 1.25rem;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition);
}
.game-tab:hover { color: var(--color-primary); }
.game-tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* Panels */
.game-panel { display: none; }
.game-panel.active { display: block; }

/* Layout */
.game-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 2.5rem;
    align-items: start;
}
.game-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.game-title { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.02em; }
.game-desc { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.65; }

/* Score boxes */
.g2048-scores, .snake-scores, .schulte-meta { display: flex; gap: 0.75rem; }
.score-box {
    flex: 1;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.6rem 0.75rem;
    text-align: center;
}
.score-box__label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}
.score-box__val {
    display: block;
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-primary);
    font-variant-numeric: tabular-nums;
}

/* ── 2048 ──────────────────────────────────────────────────────────── */
.g2048-wrapper { position: relative; display: inline-block; user-select: none; }
.g2048-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    padding: 8px;
    background: #bbada0;
    border-radius: var(--radius-lg);
    width: min(400px, 100%);
    aspect-ratio: 1;
}
.g2048-cell {
    background: #cdc1b4;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
    aspect-ratio: 1;
    transition: background 0.1s;
}
.g2048-cell.v2    { background: #eee4da; color: #776e65; }
.g2048-cell.v4    { background: #ede0c8; color: #776e65; }
.g2048-cell.v8    { background: #f2b179; color: #f9f6f2; }
.g2048-cell.v16   { background: #f59563; color: #f9f6f2; }
.g2048-cell.v32   { background: #f67c5f; color: #f9f6f2; }
.g2048-cell.v64   { background: #f65e3b; color: #f9f6f2; }
.g2048-cell.v128  { background: #edcf72; color: #f9f6f2; font-size: 1.4rem; }
.g2048-cell.v256  { background: #edcc61; color: #f9f6f2; font-size: 1.4rem; }
.g2048-cell.v512  { background: #edc850; color: #f9f6f2; font-size: 1.4rem; }
.g2048-cell.v1024 { background: #edc53f; color: #f9f6f2; font-size: 1.1rem; }
.g2048-cell.v2048 { background: #edc22e; color: #f9f6f2; font-size: 1.1rem; }
.g2048-over {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(238,228,218,.75);
    border-radius: var(--radius-lg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    text-align: center;
}
.g2048-over__msg { font-size: 1.5rem; font-weight: 800; color: #776e65; }

/* ── Schulte ───────────────────────────────────────────────────────── */
.schulte-sizes { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.schulte-size-label { font-size: 0.85rem; color: var(--color-text-muted); }
.schulte-size-btn {
    padding: 0.3rem 0.65rem;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-sans);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: all var(--transition);
}
.schulte-size-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.schulte-size-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.schulte-status { font-weight: 700; color: var(--color-success); font-size: 1rem; min-height: 1.5em; }
.schulte-grid { display: grid; gap: 6px; width: min(400px, 100%); }
.schulte-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--font-sans);
    color: var(--color-text);
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: background var(--transition), border-color var(--transition), transform 0.1s;
}
.schulte-cell:hover:not(:disabled) { border-color: var(--color-primary); background: #ede9fe; transform: scale(1.05); }
.schulte-cell.correct { background: var(--color-success); border-color: var(--color-success); color: #fff; cursor: default; }
.schulte-cell.wrong   { background: #fca5a5; border-color: #ef4444; animation: schulte-shake 0.35s ease; }
@keyframes schulte-shake {
    0%, 100% { transform: translateX(0); }
    25%       { transform: translateX(-6px); }
    75%       { transform: translateX(6px); }
}

/* ── Snake ─────────────────────────────────────────────────────────── */
.snake-wrapper {
    position: relative;
    display: inline-block;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    max-width: 100%;
}
#snake-canvas { display: block; max-width: 100%; }
.snake-over {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(15,23,42,.78);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: #fff;
    text-align: center;
}
.snake-over__msg   { font-size: 1.5rem; font-weight: 800; }
.snake-over__score { font-size: 1rem; opacity: 0.8; }
.snake-dpad        { display: none; margin-top: 1rem; }
.dpad-row          { display: flex; justify-content: center; gap: 4px; margin: 2px 0; }
.dpad-btn {
    width: 52px; height: 52px;
    font-size: 1.25rem;
    background: var(--color-bg-alt);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--color-text);
    transition: background var(--transition);
}
.dpad-btn:hover  { background: var(--color-border); }
.dpad-btn:active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.dpad-center     { width: 52px; height: 52px; }

/* ═══════════════════════════════════════════════════════════════════
   PRINT
   ═══════════════════════════════════════════════════════════════════ */
@media print {
    .site-header, .site-footer, .newsletter-section, .related-posts, .author-bio { display: none; }
    .post-body { max-width: 100%; }
    a::after { content: " (" attr(href) ")"; font-size: 0.85em; color: #555; }
}

/* Hide portal badge and copyright */
.gh-powered { display: none !important; }
.gh-footer-copyright { display: none !important; }

/* ═══════════════════════════════════════════════════════════════════
   OAUTH SOCIAL LOGIN BUTTONS
   ═══════════════════════════════════════════════════════════════════ */

.auth-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: nowrap;
}

.auth-separator {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

/* Base OAuth button — extends .btn .btn-sm */
.btn-oauth {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    font-weight: 500;
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-oauth:hover {
    background: var(--color-bg-alt);
    box-shadow: var(--shadow-sm);
    color: var(--color-text);
}

.btn-oauth svg {
    flex-shrink: 0;
}

.btn-oauth--google:hover { border-color: #4285F4; }
.btn-oauth--yandex:hover { border-color: #FC3F1D; }

[data-theme="dark"] .btn-oauth {
    background: var(--color-bg-alt);
    border-color: var(--color-border);
    color: var(--color-text);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .btn-oauth {
        background: var(--color-bg-alt);
        border-color: var(--color-border);
        color: var(--color-text);
    }
}

/* Narrow screens: hide text labels, keep icons */
@media (max-width: 900px) {
    .auth-separator    { display: none; }
    .btn-oauth span    { display: none; }
    .btn-oauth {
        padding: 0.4rem;
        min-width: 34px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .auth-buttons { gap: 0.25rem; }
}