/* ============================================================================= chatMCD — DIFFRACTION ----------------------------------------------------------------------------- Direction chosen from the five-variant review (artifact "chatMCD Design Directions", 2026-09-07): a crystallography console. A faint diffraction-spot lattice fades out behind the conversation, cyan reads as instrument readout rather than startup gradient, and amber is the counter-accent. Light is the default. Dark is the original artifact palette, verbatim, reached through the header switch. Theme is resolved by a `data-theme` attribute on ; there is no prefers-color-scheme fallback, because "default light" is a deliberate decision rather than a system question. Chivo 900 display / IBM Plex Sans body / IBM Plex Mono labels. ========================================================================== */ /* ---------------------------------------------------------------- 1. TOKENS */ :root, :root[data-theme="light"] { --bg: #F1F4FA; --surf: #FFFFFF; --surf-2: #E8EDF6; --ink: #0B0E17; /* the dark theme's ground, used as light theme's ink */ --ink-2: #4B5670; --ink-3: #78829A; --line: #D8DFEC; --line-2: #C3CCDE; --acc: #0E7C86; /* instrument cyan, darkened to 4.9:1 on white */ --acc-hi: #0A5C64; --acc-soft: #DFF1F2; --acc2: #B4650F; /* amber, text-safe */ --acc2-soft: #FAEBD8; --on-acc: #FFFFFF; --danger: #B3261E; --spot: rgba(24, 54, 92, .22); --glow-1: rgba(14, 124, 134, .07); --glow-2: rgba(224, 138, 60, .07); --shadow: 0 1px 2px rgba(11, 14, 23, .06), 0 8px 24px rgba(11, 14, 23, .07); --shadow-sm: 0 1px 2px rgba(11, 14, 23, .07); } :root[data-theme="dark"] { --bg: #0B0E17; --surf: #151A28; --surf-2: #1C2233; --ink: #E7EAF2; --ink-2: #8891A8; --ink-3: #6E7789; --line: #242C40; --line-2: #333D57; --acc: #4FD1D9; --acc-hi: #7FE3E9; --acc-soft: #12303A; --acc2: #F0A05A; --acc2-soft: #33241A; --on-acc: #08131A; --danger: #F2726A; --spot: rgba(180, 205, 225, .16); --glow-1: rgba(79, 209, 217, .09); --glow-2: rgba(240, 160, 90, .07); --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 30px rgba(0, 0, 0, .35); --shadow-sm: 0 1px 2px rgba(0, 0, 0, .35); } :root { --font-display: "Chivo", ui-sans-serif, system-ui, sans-serif; --font-body: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, sans-serif; --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace; --r-panel: 12px; --r-bub: 4px 14px 14px 14px; --r-bub-u: 14px 4px 14px 14px; --r-chip: 6px; --r-input: 10px; --hdr-h: auto; --maxw: 1010px; } /* ------------------------------------------------------------ 2. RESET/BASE */ *, *::before, *::after { box-sizing: border-box; } html, body { height: 100%; } body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: 15px; line-height: 1.55; -webkit-font-smoothing: antialiased; overflow-x: hidden; } img, svg, canvas { max-width: 100%; } a { color: var(--acc); } button { font: inherit; } :where(a, button, input, textarea, [tabindex]):focus-visible { outline: 2px solid var(--acc); outline-offset: 2px; border-radius: 4px; } .visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; } /* --------------------------------------------------------------- 3. SHELL */ .shell { display: flex; flex-direction: column; height: 100dvh; max-width: var(--maxw); margin: 0 auto; background: var(--bg); } /* Full app gets a framed console; the widget fills its iframe edge to edge. */ body.is-app .shell { border-left: 1px solid var(--line); border-right: 1px solid var(--line); } @media (min-width: 1000px) { body.is-app { padding: 22px 0; background: var(--surf-2); } body.is-app .shell { height: calc(100dvh - 44px); border: 1px solid var(--line); border-radius: var(--r-panel); overflow: hidden; box-shadow: var(--shadow); } } /* -------------------------------------------------------------- 4. HEADER */ .hdr { flex: none; display: flex; align-items: center; gap: 12px; padding: 13px 18px; background: var(--surf); border-bottom: 1px solid var(--line); position: relative; z-index: 3; flex-wrap: wrap; row-gap: 8px; } .hdr-avatar { width: 42px; height: 42px; border-radius: 50%; flex: none; background: var(--surf-2); border: 1px solid var(--line); object-fit: cover; } .hdr-id { min-width: 0; flex: 1 1 250px; } /* The amber logo dot is the one fixed authorship mark across Marc's apps. Here it doubles as the beam stop at the centre of the diffraction pattern. */ .hdr-name { font-family: var(--font-display); font-weight: 900; font-size: 16px; letter-spacing: -.01em; line-height: 1.2; margin: 0; display: flex; align-items: center; gap: 8px; } .hdr-name a { color: inherit; text-decoration: none; } .hdr-name a:hover { color: var(--acc); } .logo-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--acc2); flex: none; box-shadow: 0 0 0 3px var(--acc2-soft); } .hdr-role { margin: 2px 0 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: .02em; color: var(--ink-2); } .hdr-links { display: flex; gap: 5px; flex-wrap: wrap; justify-content: flex-end; flex: 0 1 auto; } .hdr-link { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .04em; text-decoration: none; color: var(--ink-2); border: 1px solid var(--line); padding: 4px 8px; border-radius: 6px; white-space: nowrap; transition: color .15s, border-color .15s; } .hdr-link:hover { color: var(--acc); border-color: var(--acc); } .hdr-link.primary { color: var(--acc); border-color: var(--acc); } .hdr-link.primary:hover { background: var(--acc-soft); } /* theme switch ------------------------------------------------------------ */ .theme-switch { flex: none; display: inline-flex; align-items: center; gap: 0; background: var(--surf-2); border: 1px solid var(--line); border-radius: 999px; padding: 2px; } .theme-switch button { display: grid; place-items: center; width: 26px; height: 22px; border: 0; border-radius: 999px; background: transparent; color: var(--ink-3); cursor: pointer; transition: background .15s, color .15s; } .theme-switch button:hover { color: var(--ink); } .theme-switch button[aria-pressed="true"] { background: var(--surf); color: var(--acc); box-shadow: var(--shadow-sm); } .theme-switch svg { width: 14px; height: 14px; display: block; } /* --------------------------------------------------- 5. THE DIFFRACTION FIELD */ .transcript { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 22px 20px 10px; display: flex; flex-direction: column; gap: 14px; position: relative; background: radial-gradient(circle at 22% 18%, var(--glow-1), transparent 42%), radial-gradient(circle at 78% 72%, var(--glow-2), transparent 45%), var(--bg); } /* The spot lattice: a dot grid masked to fade out from the centre, so it reads as a diffraction pattern rather than as graph paper. Fixed to the viewport so the pattern stays put while the conversation scrolls over it. */ .transcript::before { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .72; background-image: radial-gradient(var(--spot) 1px, transparent 1.4px); background-size: 26px 26px; background-position: 6px 6px; -webkit-mask-image: radial-gradient(ellipse at 50% 45%, #000 8%, transparent 72%); mask-image: radial-gradient(ellipse at 50% 45%, #000 8%, transparent 72%); } .transcript > * { position: relative; z-index: 1; } /* ------------------------------------------------------------ 6. MESSAGES */ .msg { max-width: 82%; font-size: 14.5px; line-height: 1.55; animation: rise .22s ease-out both; } @keyframes rise { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } } .msg .who { display: block; font-family: var(--font-mono); font-size: 9.5px; letter-spacing: .13em; text-transform: uppercase; opacity: .62; margin-bottom: 4px; } .msg.bot { align-self: flex-start; background: var(--surf); color: var(--ink); border: 1px solid var(--line); border-radius: var(--r-bub); padding: 11px 15px; box-shadow: var(--shadow-sm); } .msg.user { align-self: flex-end; background: var(--acc); color: var(--on-acc); border: 1px solid transparent; border-radius: var(--r-bub-u); padding: 11px 15px; } .msg.user .who { opacity: .75; } .msg.error { align-self: flex-start; border-color: var(--danger); color: var(--danger); background: var(--surf); } /* markdown inside an answer ---------------------------------------------- */ .msg .md > :first-child { margin-top: 0; } .msg .md > :last-child { margin-bottom: 0; } .msg .md p { margin: 0 0 .65em; } .msg .md ul, .msg .md ol { margin: 0 0 .65em; padding-left: 1.25em; } .msg .md li { margin: .15em 0; } .msg .md strong { font-weight: 600; } .msg .md em { font-style: italic; } .msg .md a { color: var(--acc); text-underline-offset: 2px; } .msg.user .md a { color: var(--on-acc); } .msg .md code { font-family: var(--font-mono); font-size: .88em; background: var(--surf-2); border: 1px solid var(--line); border-radius: 4px; padding: 1px 4px; } .msg.user .md code { background: rgba(255, 255, 255, .18); border-color: transparent; } .msg .md pre { font-family: var(--font-mono); font-size: .85em; background: var(--surf-2); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; overflow-x: auto; margin: 0 0 .65em; } .msg .md pre code { background: none; border: 0; padding: 0; } /* typing indicator -------------------------------------------------------- */ .typing { display: inline-flex; gap: 4px; align-items: center; height: 1.2em; } .typing i { width: 5px; height: 5px; border-radius: 50%; background: var(--acc); animation: pulse 1.1s ease-in-out infinite; } .typing i:nth-child(2) { animation-delay: .16s; } .typing i:nth-child(3) { animation-delay: .32s; } @keyframes pulse { 0%, 60%, 100% { opacity: .25; } 30% { opacity: 1; } } /* status pill (cold start / queue) ---------------------------------------- */ .status { align-self: center; font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em; color: var(--acc2); background: var(--acc2-soft); border: 1px solid color-mix(in srgb, var(--acc2) 35%, transparent); border-radius: 999px; padding: 5px 13px; display: flex; align-items: center; gap: 8px; } .status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--acc2); animation: pulse 1.4s ease-in-out infinite; } /* answer actions (copy / vote) -------------------------------------------- */ .actions { display: flex; gap: 4px; align-items: center; margin-top: 8px; padding-top: 7px; border-top: 1px solid var(--line); } .actions button { border: 0; background: transparent; cursor: pointer; color: var(--ink-3); padding: 3px 6px; border-radius: 5px; line-height: 1; display: inline-flex; align-items: center; gap: 5px; font-family: var(--font-mono); font-size: 10.5px; transition: color .15s, background .15s; } .actions button:hover { color: var(--ink); background: var(--surf-2); } .actions button[aria-pressed="true"] { color: var(--acc); background: var(--acc-soft); } .actions svg { width: 13px; height: 13px; } /* ------------------------------------------------------------- 7. COMPOSER */ .composer { flex: none; padding: 12px 18px 14px; background: var(--bg); border-top: 1px solid var(--line); position: relative; z-index: 2; } .chips { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 10px; } .chip { font-family: var(--font-mono); font-size: 11.5px; line-height: 1.35; cursor: pointer; background: transparent; color: var(--ink); border: 1px solid var(--line); padding: 6px 12px; border-radius: var(--r-chip); transition: color .14s, border-color .14s, background .14s; } .chip:hover { color: var(--acc); border-color: var(--acc); background: var(--acc-soft); } .chip[disabled] { opacity: .35; cursor: default; } .input-row { display: flex; align-items: flex-end; gap: 10px; background: var(--surf); border: 1px solid var(--line); border-radius: var(--r-input); padding: 8px 8px 8px 14px; transition: border-color .15s, box-shadow .15s; } .input-row:focus-within { border-color: var(--acc); box-shadow: 0 0 0 3px var(--acc-soft); } .input-row textarea { flex: 1; border: 0; outline: 0; resize: none; background: transparent; color: var(--ink); font-family: var(--font-body); font-size: 14.5px; line-height: 1.5; max-height: 140px; padding: 4px 0; } .input-row textarea::placeholder { color: var(--ink-3); } .send { flex: none; width: 32px; height: 32px; border: 0; border-radius: 50%; background: var(--acc); color: var(--on-acc); display: grid; place-items: center; cursor: pointer; transition: background .15s, transform .1s; } .send:hover:not(:disabled) { background: var(--acc-hi); } .send:active:not(:disabled) { transform: scale(.94); } .send:disabled { opacity: .38; cursor: default; } .send svg { width: 15px; height: 15px; } .send.stop { background: var(--danger); } .foot-note { font-family: var(--font-mono); font-size: 9.5px; letter-spacing: .07em; color: var(--ink-3); text-align: center; margin: 9px 0 0; } .foot-note a { color: var(--ink-2); text-decoration: none; } .foot-note a:hover { color: var(--acc); text-decoration: underline; } /* first-run hint ---------------------------------------------------------- */ .hint { align-self: center; max-width: 62ch; text-align: center; font-size: 12.5px; color: var(--ink-2); border: 1px dashed var(--line-2); border-radius: 10px; padding: 10px 16px; background: color-mix(in srgb, var(--surf) 70%, transparent); } .hint b { color: var(--ink); font-weight: 600; } /* ------------------------------------------------------------- 8. WIDGET */ body.is-embed { background: var(--bg); } body.is-embed .shell { height: 100dvh; border: 0; } /* The widget header must stay on one row down to 320 px: the overflow menu and the theme switch sit together on the right, and the credential strip is the only thing allowed to shorten. */ body.is-embed .hdr { padding: 10px 12px; gap: 9px; flex-wrap: nowrap; row-gap: 0; } body.is-embed .hdr-id { flex: 1 1 auto; min-width: 0; } body.is-embed .hdr-role { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } body.is-embed .theme-switch { padding: 1px; } body.is-embed .theme-switch button { width: 24px; height: 20px; } body.is-embed .hdr-avatar { width: 32px; height: 32px; } body.is-embed .hdr-name { font-size: 14px; } body.is-embed .hdr-role { font-size: 10px; } body.is-embed .transcript { padding: 14px 13px 8px; gap: 11px; } body.is-embed .msg { font-size: 13.5px; max-width: 90%; } body.is-embed .composer { padding: 10px 13px 12px; } body.is-embed .chips { gap: 6px; margin-bottom: 9px; max-height: 62px; overflow: hidden; } body.is-embed .chip { font-size: 10.5px; padding: 5px 10px; } body.is-embed .input-row textarea { font-size: 13.5px; } body.is-embed .foot-note { display: none; } body.is-embed .hint { font-size: 11.5px; padding: 8px 12px; } /* An overflow menu replaces the link row in the widget. */ .hdr-menu { position: relative; flex: none; } .hdr-menu > button { border: 1px solid var(--line); background: var(--surf-2); color: var(--ink-2); border-radius: 6px; padding: 3px 8px; cursor: pointer; line-height: 1.2; font-size: 14px; letter-spacing: 1px; } .hdr-menu > button:hover { color: var(--acc); border-color: var(--acc); } .hdr-menu ul { position: absolute; right: 0; top: calc(100% + 6px); margin: 0; padding: 5px; list-style: none; background: var(--surf); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); min-width: 168px; z-index: 10; } .hdr-menu li a { display: block; padding: 6px 10px; border-radius: 5px; font-family: var(--font-mono); font-size: 11px; color: var(--ink-2); text-decoration: none; } .hdr-menu li a:hover { background: var(--acc-soft); color: var(--acc); } /* ---------------------------------------------------------- 9. RESPONSIVE */ @media (max-width: 620px) { .hdr { flex-wrap: wrap; padding: 11px 14px; } .hdr-links { width: 100%; justify-content: flex-start; order: 3; } .hdr-role { white-space: normal; } .transcript { padding: 16px 14px 8px; } .msg { max-width: 92%; } .composer { padding: 10px 14px 12px; } } /* 320 px is the floor the widget must survive in an Elementor column. */ @media (max-width: 360px) { .hdr-avatar { width: 28px; height: 28px; } .hdr-name { font-size: 13px; } .chip { font-size: 10px; padding: 4px 8px; } } @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; } } @media print { .composer, .hdr-links, .theme-switch, .actions, .hint { display: none !important; } .transcript::before { display: none; } body, .shell { height: auto; background: #fff; color: #000; } .msg { max-width: 100%; break-inside: avoid; } } /* ----------------------------------------------------------------------------- DIRECTION: Diffraction (chosen 2026-09-07 from the five-variant review). Why: chatMCD's first job is to make a recruiter in biotech or pharma read "serious structural biologist" before a word of the transcript is parsed. The spot lattice and instrument cyan do that; the amber counter-accent and the beer-named tool in the transcript carry the personality. Light is default because the widget is embedded in marcdeller.com's light WordPress pages, where a dark panel reads as a hole cut in the page. Registry note: PANTS also uses a direction called Diffraction, on a dark lattice with blue/violet (#8fb4ff / #c48cff). This one is indigo ground with cyan/amber and ships light-first, so the two do not collide. -------------------------------------------------------------------------- */ /* Inline text button inside the footer note (chat export). */ .link-btn { border: 0; background: none; padding: 0; cursor: pointer; font: inherit; letter-spacing: inherit; color: var(--ink-2); text-decoration: none; } .link-btn:hover { color: var(--acc); text-decoration: underline; } /* The lattice opacity above is tuned for the light ground. Dark needs less, because a pale dot on a dark ground already carries more contrast. */ :root[data-theme="dark"] .transcript::before { opacity: .55; } /* ------------------------------------------------- 10. WIDGET PREVIEW PAGE */ /* /embed/preview only. Chrome headless clamps its viewport to 500 px, so the widget cannot be screenshotted honestly at 320-420 px except in an iframe — which is also exactly how it ships. */ body.is-preview { height: auto; padding: 0 0 60px; } .preview-wrap { max-width: 1240px; margin: 0 auto; padding: 30px 22px; } .preview-head h1 { font-family: var(--font-display); font-weight: 900; font-size: 26px; letter-spacing: -.02em; margin: 0 0 8px; } .preview-head p { color: var(--ink-2); max-width: 68ch; margin: 0 0 16px; } .preview-head code { font-family: var(--font-mono); font-size: .88em; background: var(--surf-2); border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; } .preview-controls label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); display: inline-flex; align-items: center; gap: 9px; } .preview-controls select { font: inherit; font-size: 12px; text-transform: none; letter-spacing: 0; color: var(--ink); background: var(--surf); border: 1px solid var(--line); border-radius: 7px; padding: 6px 9px; } .preview-row { display: flex; gap: 26px; flex-wrap: wrap; margin: 26px 0 0; } .preview-cell { margin: 0; flex: 0 0 auto; width: var(--w); } .preview-cell figcaption { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 8px; } .preview-cell iframe { width: 100%; height: 560px; border: 1px solid var(--line); border-radius: 14px; background: var(--surf); box-shadow: var(--shadow); display: block; } .preview-h { font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-3); margin: 8px 0 0; } .preview-snippet { margin-top: 38px; } .preview-snippet h2 { font-family: var(--font-display); font-weight: 700; font-size: 17px; margin: 0 0 10px; } .preview-snippet pre { font-family: var(--font-mono); font-size: 12px; line-height: 1.6; background: var(--surf); color: var(--ink); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; overflow-x: auto; margin: 0; }