/* sharpbyte.dev — shared header & footer chrome Accent: --site-accent on (set per page) RGB helper: --site-accent-rgb for rgba() backgrounds */ @import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,400;0,500;0,600;1,400&family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;1,400&display=swap"); :root { --site-bg: #0d1117; --site-surface: #161b22; --site-text: #e6edf3; --site-text-muted: #8b949e; --site-text-muted2: #6e7681; --site-border: rgba(255, 255, 255, 0.07); --site-border-strong: rgba(255, 255, 255, 0.08); --site-accent: #4ade80; --site-accent-rgb: 74, 222, 128; --accent1: #5cefb8; --accent2: #7b8cff; --header-height: 56px; --header-height-compact: 44px; --site-max: 1100px; --site-pad-x: clamp(16px, 4vw, 32px); --read-progress: 0%; --focus-ring: 2px solid var(--site-accent); --focus-offset: 2px; } /* ── Skip link ── */ #site-header-mount { position: relative; z-index: 900; min-height: var(--header-height); } #site-footer-mount { margin-top: auto; } .site-skip { position: absolute; left: -9999px; top: 0; z-index: 10000; padding: 10px 16px; background: var(--site-bg); color: var(--site-text); border: var(--focus-ring); border-radius: 6px; font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 14px; text-decoration: none; } .site-skip:focus { left: 12px; top: 12px; outline: none; } /* ── Header base ── */ .site-header { --header-h: var(--header-height); position: relative; z-index: 900; width: 100%; height: var(--header-h); background: var(--site-bg); border-bottom: 1px solid transparent; transition: height 200ms ease, background 200ms ease, border-color 200ms ease, backdrop-filter 200ms ease; } .site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; max-width: 1280px; height: 100%; margin: 0 auto; padding: 0 var(--site-pad-x); } /* MODE B — reading pages */ html[data-page-type="reading"] .site-header { background: transparent; border-bottom-color: transparent; } html[data-page-type="reading"] body[data-header-fixed="true"] { padding-top: var(--header-height-compact); } html[data-page-type="reading"] .site-header[data-state="top"] { --header-h: var(--header-height); background: transparent; border-bottom-color: transparent; position: relative; } html[data-page-type="reading"] .site-header[data-state="scrolled"] { --header-h: var(--header-height-compact); position: fixed; top: 0; left: 0; right: 0; background: rgba(13, 17, 23, 0.85); backdrop-filter: blur(16px) saturate(180%); -webkit-backdrop-filter: blur(16px) saturate(180%); border-bottom-color: var(--site-border); } .site-header { height: var(--header-h); } /* Reading progress bar */ html[data-page-type="reading"] .site-header[data-state="scrolled"]::after { content: ""; position: absolute; bottom: 0; left: 0; width: var(--read-progress, 0%); height: 2px; background: var(--site-accent); opacity: 0.7; transition: width 10ms linear; pointer-events: none; } html[data-page-type="reading"] .site-header[data-state="scrolled"]::before { content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 2px; background: rgba(255, 255, 255, 0.04); pointer-events: none; } /* ── Wordmark ── */ .site-header__brand { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; position: relative; min-width: 18px; text-decoration: none; color: var(--site-text); border-radius: 6px; outline-offset: var(--focus-offset); } .site-header__brand:focus-visible { outline: var(--focus-ring); } /* Original site logo mark (orbit ring + logo-mark.svg) */ .site-header__brand > .site-brand__mark { position: relative; width: 40px; height: 40px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; overflow: visible; } .site-header__brand .site-brand__mark img, .site-header__brand .site-brand__mark svg { display: block; position: relative; z-index: 2; flex-shrink: 0; width: 32px; height: 32px; border-radius: 8px; object-fit: contain; } .site-header__brand .site-brand__ring { position: absolute; inset: 0; margin: auto; border-radius: 50%; border: 1px dotted rgba(26, 107, 74, 0.38); box-shadow: inset 0 0 0 1px rgba(26, 61, 107, 0.1); pointer-events: none; z-index: 0; opacity: 0.92; transition: border-color 0.28s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.28s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.28s cubic-bezier(0.22, 1, 0.36, 1); } .site-header__brand:hover .site-brand__ring, .site-header__brand:focus-visible .site-brand__ring { opacity: 1; border-color: rgba(92, 239, 184, 0.58); box-shadow: inset 0 0 0 1px rgba(26, 61, 107, 0.1), 0 0 0 2px rgba(92, 239, 184, 0.85), 0 0 0 4px rgba(123, 140, 255, 0.42), 0 0 18px rgba(92, 239, 184, 0.4), 0 0 34px rgba(123, 140, 255, 0.25); } .site-header__brand .site-brand__arm { position: absolute; left: 50%; top: 50%; width: 21px; height: 1px; margin-left: -21px; margin-top: -0.5px; transform-origin: 100% 50%; animation: site-header-brand-orbit 18s linear infinite; pointer-events: none; z-index: 1; } .site-header__brand .site-brand__arm--b { animation-duration: 13.5s; animation-direction: reverse; } .site-header__brand .site-brand__sat { position: absolute; right: 0; top: 50%; width: 6px; height: 6px; margin-top: -3px; margin-right: -3px; border-radius: 50%; background: var(--accent1); box-shadow: 0 0 12px rgba(92, 239, 184, 0.5); } .site-header__brand .site-brand__sat--violet { background: var(--accent2); box-shadow: 0 0 12px rgba(123, 140, 255, 0.45); } @keyframes site-header-brand-orbit { to { transform: rotate(360deg); } } @media (prefers-reduced-motion: reduce) { .site-header__brand .site-brand__arm { animation: none; } } html[data-page-type="reading"] .site-header[data-state="scrolled"] .site-brand__mark { width: 36px; height: 36px; } html[data-page-type="reading"] .site-header[data-state="scrolled"] .site-brand__mark img { width: 28px; height: 28px; } .site-header__word { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 14px; font-weight: 500; letter-spacing: -0.3px; color: var(--site-text); } .site-header__tld { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 14px; font-weight: 600; color: var(--site-accent); transition: color 400ms ease; } .site-header__wordtext { display: inline; } /* Reading mode small screens: logo mark only (wordmark on hover/focus) */ @media (max-width: 639px) { html[data-page-type="reading"] .site-header__wordtext { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; } html[data-page-type="reading"] .site-header__brand:hover .site-header__wordtext, html[data-page-type="reading"] .site-header__brand:focus-visible .site-header__wordtext { position: static; width: auto; height: auto; margin: 0; clip: auto; overflow: visible; } } /* ── Breadcrumb (reading, scrolled) ── */ .header-breadcrumb { display: none; align-items: center; justify-content: center; flex: 1; min-width: 0; opacity: 0; transform: translateY(-4px); transition: opacity 300ms ease, transform 300ms ease; } html[data-page-type="reading"] .site-header[data-state="scrolled"] .header-breadcrumb { display: flex; } .site-header[data-breadcrumb="visible"] .header-breadcrumb { opacity: 1; transform: translateY(0); } .header-breadcrumb__badge { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 10px; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; padding: 2px 7px; border-radius: 3px; color: var(--site-accent); background: rgba(var(--site-accent-rgb), 0.1); border: 1px solid rgba(var(--site-accent-rgb), 0.25); white-space: nowrap; flex-shrink: 0; } .header-breadcrumb__sep { margin: 0 8px; font-size: 12px; color: var(--site-text-muted2); flex-shrink: 0; } .header-breadcrumb__guide { font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 13px; font-weight: 500; color: var(--site-text-muted); max-width: 280px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } /* ── Nav ── */ .site-header__nav { display: flex; align-items: center; gap: 4px; flex-shrink: 0; } .site-header__links { display: none; align-items: center; gap: 20px; list-style: none; margin: 0; padding: 0; } @media (min-width: 900px) { .site-header__links { display: flex; } } .site-header__link { font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 13px; font-weight: 400; color: var(--site-text-muted); text-decoration: none; background: none; border: none; cursor: pointer; padding: 6px 0; transition: color 150ms ease; border-radius: 4px; outline-offset: var(--focus-offset); } .site-header__link:hover { color: var(--site-text); } .site-header__link:focus-visible { outline: var(--focus-ring); } .site-header__link.is-active { color: var(--site-accent); font-weight: 500; } .site-header__link--dropdown { display: inline-flex; align-items: center; gap: 4px; } .site-header__chev { font-size: 10px; opacity: 0.7; } /* Reading mode desktop: hide text nav, show icon controls */ html[data-page-type="reading"] .site-header[data-state="scrolled"] .site-header__links { display: none; } .site-header__reading-tools { display: none; align-items: center; gap: 6px; } html[data-page-type="reading"] .site-header[data-state="scrolled"] .site-header__reading-tools { display: flex; } @media (max-width: 899px) { .site-header__links { display: none !important; } } .site-header__icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; padding: 0; border: none; border-radius: 6px; background: transparent; color: var(--site-text-muted2); cursor: pointer; text-decoration: none; transition: color 150ms ease, background 150ms ease; outline-offset: var(--focus-offset); } .site-header__icon-btn:hover { color: var(--site-text); background: rgba(255, 255, 255, 0.06); } .site-header__icon-btn:focus-visible { outline: var(--focus-ring); } .site-header__icon-btn[disabled], .site-header__icon-btn.is-disabled { opacity: 0.35; pointer-events: none; } .site-header__icon-btn svg { width: 16px; height: 16px; } .site-header__mobile-tools { display: flex; align-items: center; gap: 4px; } .site-header__actions { display: flex; align-items: center; flex-shrink: 0; margin-left: 2px; } /* ── Slim morphing theme toggle (matches 28px icon buttons) ── */ .site-theme-toggle { position: relative; overflow: visible; } .site-theme-toggle__stack { position: relative; display: block; width: 16px; height: 16px; } .site-theme-toggle__icon { position: absolute; inset: 0; width: 16px; height: 16px; transition: opacity 0.2s ease, transform 0.34s cubic-bezier(0.34, 1.45, 0.64, 1), filter 0.25s ease; } .site-theme-toggle:not([aria-pressed="true"]) .site-theme-toggle__icon--moon { opacity: 1; transform: rotate(0deg) scale(1); filter: drop-shadow(0 0 6px rgba(165, 180, 252, 0.45)); color: #c4d0ff; } .site-theme-toggle:not([aria-pressed="true"]) .site-theme-toggle__icon--sun { opacity: 0; transform: rotate(50deg) scale(0.55); } .site-theme-toggle[aria-pressed="true"] .site-theme-toggle__icon--moon { opacity: 0; transform: rotate(-50deg) scale(0.55); } .site-theme-toggle[aria-pressed="true"] .site-theme-toggle__icon--sun { opacity: 1; transform: rotate(0deg) scale(1); filter: drop-shadow(0 0 6px rgba(245, 158, 11, 0.4)); color: #fbbf24; } .site-theme-toggle::before { content: ""; position: absolute; inset: 3px; border-radius: 5px; opacity: 0; background: radial-gradient(circle at 50% 50%, rgba(var(--site-accent-rgb), 0.22), transparent 70%); transition: opacity 0.2s ease; pointer-events: none; } .site-theme-toggle:hover::before, .site-theme-toggle:focus-visible::before { opacity: 1; } .site-theme-toggle:active .site-theme-toggle__icon--moon, .site-theme-toggle:active .site-theme-toggle__icon--sun { transform: scale(0.9); } @media (prefers-reduced-motion: reduce) { .site-theme-toggle__icon { transition-duration: 0.01ms; } } @media (min-width: 900px) { .site-header__mobile-tools { display: none; } html[data-page-type="static"] .site-header__mobile-tools, html[data-page-type="reading"] .site-header[data-state="top"] .site-header__mobile-tools { display: none; } } @media (max-width: 899px) { .site-header__reading-tools { display: none !important; } .site-header__mobile-tools { display: flex; } } /* Scrolled reading: smaller nav feel */ html[data-page-type="reading"] .site-header[data-state="scrolled"] .site-header__link { font-size: 11px; } /* ── Mega dropdown ── */ .site-header__dropdown-wrap { position: relative; } .site-header__dropdown-wrap.is-open .site-header__mega { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; } .site-header__mega { position: absolute; top: calc(100% + 8px); right: -40px; width: 520px; max-width: calc(100vw - 32px); padding: 20px; background: var(--site-surface); border: 1px solid var(--site-border-strong); border-radius: 10px; box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity 150ms ease, transform 150ms ease, visibility 150ms; pointer-events: none; z-index: 950; } .site-header__mega-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; } @media (max-width: 640px) { .site-header__mega { right: 0; width: min(520px, calc(100vw - 24px)); } .site-header__mega-grid { grid-template-columns: 1fr; } } .site-header__mega-label { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 10px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--site-text-muted2); margin: 0 0 10px; } .site-header__mega-list { list-style: none; margin: 0; padding: 0; } .site-header__mega-item { margin: 0; } .site-header__mega-link { display: flex; align-items: center; gap: 10px; padding: 8px 10px; margin: 0 -10px; border-radius: 6px; text-decoration: none; color: var(--site-text); font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 13px; transition: background 150ms ease; } .site-header__mega-link:hover { background: rgba(var(--site-accent-rgb), 0.06); } .site-header__mega-dot { width: 5px; height: 5px; border-radius: 50%; flex-shrink: 0; } .site-header__mega-name { flex: 1; } .site-header__mega-arrow { color: var(--site-text-muted2); font-size: 12px; } .site-header__mega-section + .site-header__mega-section { margin-top: 16px; } .site-header__mega-quick { display: block; padding: 6px 0; font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 13px; color: var(--site-text-muted); text-decoration: none; transition: color 150ms ease; } .site-header__mega-quick:hover { color: var(--site-text); } .site-header__mega-quick::before { content: "→ "; color: var(--site-text-muted2); } /* ── Mobile overlay nav ── */ .site-mobile-nav { position: fixed; inset: 0; z-index: 980; background: var(--site-bg); transform: translateX(100%); transition: transform 250ms ease; overflow-y: auto; -webkit-overflow-scrolling: touch; } .site-mobile-nav.is-open { transform: translateX(0); } .site-mobile-nav__inner { padding: 16px var(--site-pad-x) 32px; min-height: 100%; display: flex; flex-direction: column; } .site-mobile-nav__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; } .site-mobile-nav__brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--site-text); } .site-mobile-nav__brand .site-header__word { font-size: 20px; } .site-mobile-nav__brand .site-header__tld { font-size: 20px; } .site-mobile-nav__close { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; border: none; background: transparent; color: var(--site-text-muted); font-size: 24px; cursor: pointer; border-radius: 8px; } .site-mobile-nav__close:focus-visible { outline: var(--focus-ring); } .site-mobile-nav__series { list-style: none; margin: 0 0 24px; padding: 0; } .site-mobile-nav__series-link { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid var(--site-border); text-decoration: none; color: var(--site-text); font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 16px; } .site-mobile-nav__series-right { display: flex; align-items: center; gap: 10px; color: var(--site-text-muted2); } .site-mobile-nav__divider { height: 1px; background: var(--site-border); margin: 8px 0 24px; } .site-mobile-nav__quick { list-style: none; margin: 0; padding: 0; } .site-mobile-nav__quick a, .site-mobile-nav__quick button { display: block; width: 100%; padding: 12px 0; font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 15px; color: var(--site-text-muted); text-decoration: none; background: none; border: none; text-align: left; cursor: pointer; } .site-mobile-nav__quick a:hover, .site-mobile-nav__quick button:hover { color: var(--site-text); } .site-mobile-nav__accent-band { margin-top: auto; padding-top: 32px; } .site-mobile-nav__accent-band::before { content: ""; display: block; height: 3px; border-radius: 2px; background: var(--site-accent); opacity: 0.5; } /* ── Search overlay ── */ .site-search-overlay { position: fixed; inset: 0; z-index: 990; display: flex; flex-direction: column; align-items: center; padding: 80px 16px 32px; background: rgba(13, 17, 23, 0.96); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); opacity: 0; visibility: hidden; transition: opacity 200ms ease, visibility 200ms; } .site-search-overlay.is-open { opacity: 1; visibility: visible; } .site-search-overlay__panel { width: 100%; max-width: 600px; } .site-search-overlay__field { position: relative; display: flex; align-items: center; } .site-search-overlay__icon { position: absolute; left: 14px; color: var(--site-accent); pointer-events: none; } .site-search-overlay__input { width: 100%; height: 48px; padding: 0 44px 0 44px; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 16px; color: var(--site-text); background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.15); border-radius: 8px; outline: none; } .site-search-overlay__input:focus { border-color: var(--site-accent); box-shadow: 0 0 0 2px rgba(var(--site-accent-rgb), 0.25); } .site-search-overlay__input::placeholder { color: var(--site-text-muted2); } .site-search-overlay__clear { position: absolute; right: 8px; width: 32px; height: 32px; border: none; background: transparent; color: var(--site-text-muted2); font-size: 18px; cursor: pointer; border-radius: 6px; } .site-search-overlay__clear:focus-visible { outline: var(--focus-ring); } .site-search-overlay__hint { margin: 12px 0 0; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; color: var(--site-text-muted2); text-align: center; } .site-search-overlay__results { list-style: none; margin: 16px 0 0; padding: 0; max-height: 50vh; overflow-y: auto; } .site-search-overlay__result { margin: 0; } .site-search-overlay__result-link { display: flex; align-items: flex-start; gap: 12px; padding: 12px 14px; border-radius: 8px; text-decoration: none; color: var(--site-text); transition: background 150ms ease; } .site-search-overlay__result-link:hover, .site-search-overlay__result-link.is-active { background: rgba(var(--site-accent-rgb), 0.08); } .site-search-overlay__result-dot { width: 6px; height: 6px; border-radius: 50%; margin-top: 7px; flex-shrink: 0; } .site-search-overlay__result-body { min-width: 0; } .site-search-overlay__result-title { font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 14px; font-weight: 500; } .site-search-overlay__result-path { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; color: var(--site-text-muted2); margin-top: 2px; } .site-search-overlay__empty { padding: 24px; text-align: center; color: var(--site-text-muted); font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 14px; } /* ── Footer ── */ .site-footer { background: var(--site-bg); border-top: 1px solid var(--site-border); padding: 40px 0 32px; margin-top: auto; } .site-footer__inner { max-width: var(--site-max); margin: 0 auto; padding: 0 var(--site-pad-x); } .site-footer__label { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 10px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--site-text-muted2); margin: 0 0 12px; } /* Row 1 — series pills */ .site-footer__series-wrap { margin-bottom: 40px; } .site-footer__pills { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; -ms-overflow-style: none; } .site-footer__pills::-webkit-scrollbar { display: none; } .site-footer__pill { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; padding: 5px 12px; border-radius: 4px; border: 1px solid rgba(var(--pill-rgb), 0.2); background: transparent; color: rgba(var(--pill-rgb), 0.7); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; text-decoration: none; white-space: nowrap; transition: background 150ms ease, color 150ms ease, border-color 150ms ease; } .site-footer__pill:hover { background: rgba(var(--pill-rgb), 0.08); color: rgb(var(--pill-rgb)); border-color: rgba(var(--pill-rgb), 0.35); } .site-footer__pill.is-current { background: rgba(var(--pill-rgb), 0.12); color: rgb(var(--pill-rgb)); border-color: rgba(var(--pill-rgb), 0.5); } .site-footer__pill-dot { width: 5px; height: 5px; border-radius: 50%; background: rgb(var(--pill-rgb)); } /* Row 2 — three columns */ .site-footer__grid { display: grid; grid-template-columns: 1fr; gap: 32px; margin-bottom: 40px; } @media (min-width: 640px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } } @media (min-width: 900px) { .site-footer__grid { grid-template-columns: 1.2fr 1fr 1fr; } } .site-footer__mission { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; line-height: 1.8; color: var(--site-text-muted2); max-width: 240px; margin: 16px 0; } .site-footer__github { display: inline-flex; align-items: center; gap: 8px; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; color: var(--site-text-muted2); text-decoration: none; transition: color 150ms ease; } .site-footer__github:hover { color: var(--site-text); } .site-footer__links { list-style: none; margin: 0; padding: 0; } .site-footer__links li { margin: 0 0 8px; } .site-footer__links a { font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 13px; color: var(--site-text-muted); text-decoration: none; transition: color 150ms ease; } .site-footer__links a:hover { color: var(--site-text); } .site-footer__recent-item { display: block; padding: 8px 0; text-decoration: none; border-bottom: 1px solid var(--site-border); } .site-footer__recent-item:last-child { border-bottom: none; } .site-footer__recent-title { display: flex; align-items: center; gap: 8px; font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 13px; color: var(--site-text); } .site-footer__recent-path { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; color: var(--site-text-muted2); margin-top: 4px; padding-left: 14px; } /* Row 3 — bottom bar */ .site-footer__bar { display: flex; flex-direction: column; align-items: center; gap: 12px; padding-top: 24px; border-top: 1px solid var(--site-border); text-align: center; } @media (min-width: 900px) { .site-footer__bar { flex-direction: row; justify-content: space-between; text-align: left; } } .site-footer__copy, .site-footer__tagline { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; color: var(--site-text-muted2); margin: 0; } .site-footer__social { display: flex; gap: 16px; list-style: none; margin: 0; padding: 0; } .site-footer__social a { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; color: var(--site-text-muted2); text-decoration: none; transition: color 150ms ease; } .site-footer__social a:hover { color: var(--site-text); } /* Visually hidden utility */ .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; } /* Page-specific toolbar below shared header (Applied AI prefs) */ .aac-topbar-prefs--below-chrome { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; max-width: 1280px; margin: 0 auto; padding: 8px var(--site-pad-x) 12px; border-bottom: 1px solid var(--site-border); background: var(--site-subbar-bg, rgba(13, 17, 23, 0.6)); } .aac-topbar-prefs--below-chrome::before { content: ""; flex: 0 0 auto; width: 0; } .aac-topbar-prefs--below-chrome .hp-topbar__actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-left: auto; } /* ── Light theme (day mode) ── */ html[data-hp-theme="light"] { color-scheme: light; --site-bg: #f5f2eb; --site-surface: #fffdf8; --site-text: #1a1612; --site-text-muted: #57606a; --site-text-muted2: #6e7781; --site-border: rgba(26, 22, 18, 0.1); --site-border-strong: rgba(26, 22, 18, 0.14); --site-subbar-bg: #ebe6dc; } html[data-hp-theme="light"] .site-header { background: var(--site-bg); border-bottom-color: var(--site-border); } html[data-hp-theme="light"][data-page-type="reading"] .site-header, html[data-hp-theme="light"][data-page-type="reading"] .site-header[data-state="top"] { background: var(--site-bg); border-bottom-color: var(--site-border); } html[data-hp-theme="light"][data-page-type="reading"] .site-header[data-state="scrolled"] { background: rgba(245, 242, 235, 0.94); border-bottom-color: var(--site-border); box-shadow: 0 1px 0 rgba(26, 22, 18, 0.04); } html[data-hp-theme="light"] .site-header__word { color: var(--site-text); } html[data-hp-theme="light"] .site-header__link { color: var(--site-text-muted); } html[data-hp-theme="light"] .site-header__link:hover { color: var(--site-text); } html[data-hp-theme="light"] .site-header__icon-btn { color: var(--site-text-muted2); } html[data-hp-theme="light"] .site-header__icon-btn:hover { color: var(--site-text); background: rgba(26, 22, 18, 0.06); } html[data-hp-theme="light"] .site-theme-toggle:not([aria-pressed="true"]) .site-theme-toggle__icon--moon { color: #6366f1; filter: drop-shadow(0 0 4px rgba(99, 102, 241, 0.25)); } html[data-hp-theme="light"] .site-theme-toggle[aria-pressed="true"] .site-theme-toggle__icon--sun { color: #d97706; filter: drop-shadow(0 0 4px rgba(217, 119, 6, 0.3)); } html[data-hp-theme="light"] .header-breadcrumb__badge { color: var(--site-accent); background: rgba(var(--site-accent-rgb), 0.12); border-color: rgba(var(--site-accent-rgb), 0.3); } html[data-hp-theme="light"] .header-breadcrumb__guide { color: var(--site-text-muted); } html[data-hp-theme="light"] .header-breadcrumb__sep { color: var(--site-text-muted2); } html[data-hp-theme="light"] .site-header__mega { background: var(--site-surface); border-color: var(--site-border-strong); box-shadow: 0 16px 48px rgba(26, 22, 18, 0.12); } html[data-hp-theme="light"] .site-header__mega-link { color: var(--site-text); } html[data-hp-theme="light"] .site-header__mega-link:hover { background: rgba(var(--site-accent-rgb), 0.08); } html[data-hp-theme="light"] .site-header__mega-quick { color: var(--site-text-muted); } html[data-hp-theme="light"] .site-header__mega-quick:hover { color: var(--site-text); } html[data-hp-theme="light"] .site-mobile-nav { background: var(--site-bg); } html[data-hp-theme="light"] .site-mobile-nav__series-link { color: var(--site-text); border-bottom-color: var(--site-border); } html[data-hp-theme="light"] .site-mobile-nav__quick a, html[data-hp-theme="light"] .site-mobile-nav__quick button { color: var(--site-text-muted); } html[data-hp-theme="light"] .site-search-overlay { background: rgba(245, 242, 235, 0.97); } html[data-hp-theme="light"] .site-search-overlay__input { background: #fff; color: var(--site-text); border-color: var(--site-border-strong); } html[data-hp-theme="light"] .site-footer { background: var(--site-bg); border-top-color: var(--site-border); } html[data-hp-theme="light"] .site-footer__mission, html[data-hp-theme="light"] .site-footer__copy, html[data-hp-theme="light"] .site-footer__tagline, html[data-hp-theme="light"] .site-footer__social a, html[data-hp-theme="light"] .site-footer__github { color: var(--site-text-muted2); } html[data-hp-theme="light"] .site-footer__links a { color: var(--site-text-muted); } html[data-hp-theme="light"] .site-footer__links a:hover, html[data-hp-theme="light"] .site-footer__github:hover, html[data-hp-theme="light"] .site-footer__social a:hover { color: var(--site-text); } html[data-hp-theme="light"] .site-footer__recent-title { color: var(--site-text); } html[data-hp-theme="light"] .site-skip { background: var(--site-surface); color: var(--site-text); } /* ── Related guides (SEO internal linking) ── */ .related-guides { margin: 48px 0 32px; padding-top: 32px; border-top: 1px solid var(--site-border); } .related-label { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 10px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--site-text-muted2); margin-bottom: 16px; } .related-grid { display: grid; grid-template-columns: 1fr; gap: 12px; } @media (min-width: 640px) { .related-grid { grid-template-columns: repeat(3, 1fr); } } .related-card { display: flex; flex-direction: column; gap: 6px; padding: 16px 16px 16px 18px; border-left: 2px solid var(--site-accent); background: rgba(255, 255, 255, 0.02); text-decoration: none; transition: background 150ms ease; } .related-card:hover { background: rgba(var(--site-accent-rgb), 0.06); } .related-series-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; } .related-series-name { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--site-text-muted2); } .related-title { font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 14px; font-weight: 600; color: var(--site-text); line-height: 1.35; } .related-desc { font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 12px; line-height: 1.5; color: var(--site-text-muted); } html[data-hp-theme="light"] .related-card { background: rgba(26, 22, 18, 0.03); } html[data-hp-theme="light"] .related-card:hover { background: rgba(var(--site-accent-rgb), 0.08); } /* Header boot placeholder — prevents CLS before shared.js hydrates */ #site-header-mount:empty, .site-header--boot { min-height: 56px; } #site-footer-mount:empty { min-height: 280px; }