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feat(ui): dark tech theme — emoji-free chrome, subtle animated CSS background, WCAG AA dark palette

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ducoterra
2026-08-21 23:34:36 -04:00
parent 1b29b1cf9d
commit 2f738a7f19
11 changed files with 748 additions and 81 deletions
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frontend/assets/app.js
+13 -2
View File
@@ -107,13 +107,24 @@ export function renderMarkdown(md) {
return text.replace(/\u0000CODE(\d+)\u0000/g, (_m, i) => codeBlocks[Number(i)]);
}
/* ---------- avatar glyphs (phase 08: emoji-free chrome) ----------
* Inline SVG as string constants so the message renderer and the typing
* indicator share exactly the same marks. currentColor lets the CSS theme
* the stroke (brand-ink for Brain, ink-soft for the user — see styles.css).
*/
const BRAIN_AVATAR =
'<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.7" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><rect x="6.5" y="6.5" width="11" height="11" rx="2.5"/><circle cx="12" cy="12" r="1.9" fill="currentColor" stroke="none"/><path d="M9.5 6.5V3.8M14.5 6.5V3.8M9.5 20.2v-2.7M14.5 20.2v-2.7M6.5 9.5H3.8M6.5 14.5H3.8M20.2 9.5h-2.7M20.2 14.5h-2.7"/></svg>';
const USER_AVATAR =
'<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.7" stroke-linecap="round" aria-hidden="true"><circle cx="12" cy="8" r="3.6"/><path d="M4.8 20.2c.9-3.9 3.8-6 7.2-6s6.3 2.1 7.2 6"/></svg>';
/* ---------- messages ---------- */
function addMessage(who, html) {
if (emptyState) emptyState.hidden = true;
const wrap = document.createElement("div");
wrap.className = `msg ${who}`;
wrap.innerHTML = `
<span class="avatar" aria-hidden="true">${who === "brain" ? "🧠" : "🧑"}</span>
<span class="avatar" aria-hidden="true">${who === "brain" ? BRAIN_AVATAR : USER_AVATAR}</span>
<div class="msg-body">
<div class="bubble">${html}</div>
</div>`;
@@ -129,7 +140,7 @@ function addTyping() {
wrap.className = "msg brain";
wrap.id = "typing-indicator";
wrap.innerHTML = `
<span class="avatar" aria-hidden="true">🧠</span>
<span class="avatar" aria-hidden="true">${BRAIN_AVATAR}</span>
<div class="msg-body">
<div class="bubble typing" role="status" aria-label="${TYPING_LABEL}">
<span></span><span></span><span></span>
frontend/assets/styles.css
+130 -38
View File
@@ -1,30 +1,33 @@
/* ==========================================================================
Brain of Reese — design system (no CDN; system fonts only)
Dark tech theme (phase 08): emoji-free chrome, subtle animated pure-CSS
background, WCAG 2.1 AA dark palette (every pair computed >= 4.5:1).
========================================================================== */
:root {
/* Palette — all text/background pairs meet WCAG 2.1 AA (>= 4.5:1) */
--bg: #f4f5fb;
--surface: #ffffff;
--ink: #1c2130; /* 14.9:1 on --surface */
--ink-soft: #4a5168; /* 7.6:1 on --surface */
--line: #e3e6f0;
--brand: #4f46e5; /* white on brand: 6.3:1 */
--brand-soft: #eef0fe;
--brand-ink: #3730a3;
--accent-bg: #fff7e8;
--accent-ink: #92400e; /* 8.7:1 on --accent-bg */
--accent-line: #f59e0b;
--ok-ink: #15803d;
--ok-bg: #f0fdf4;
--err-ink: #b91c1c;
--err-bg: #fef2f2;
--err-line: #fecaca;
--bg: #0a0e17; /* page: ink on bg 16.2:1 */
--surface: #121a2e; /* ink on surface 14.5:1 */
--ink: #e8ebf4;
--ink-soft: #9aa4bd; /* 6.9:1 on --surface */
--line: #26304a; /* decorative 1px borders */
--brand: #6d78f2; /* text on brand is DARK ink (--bg): 5.2:1 —
never white on brand (3.7:1, fails) */
--brand-soft: #232b52;
--brand-ink: #a5b4fc; /* 8.7:1 on --surface, 6.9:1 on --brand-soft */
--accent-bg: #2b2110;
--accent-ink: #fbbf24; /* 9.5:1 on --accent-bg */
--accent-line: #f59e0b; /* 8.9:1 on --bg (deflection border) */
--ok-bg: #10241b;
--ok-ink: #6ee7a8; /* 10.6:1 on --ok-bg */
--err-bg: #2d1318;
--err-ink: #fca5a5; /* 9.1:1 on --err-bg */
--err-line: #ef4444; /* 4.6:1 on --err-bg (UI boundary, not text) */
--radius: 14px;
--radius-sm: 9px;
--shadow: 0 1px 2px rgb(28 33 48 / 0.06), 0 4px 16px rgb(28 33 48 / 0.07);
--shadow-lg: 0 4px 10px rgb(28 33 48 / 0.08), 0 12px 32px rgb(28 33 48 / 0.12);
--radius: 10px;
--radius-sm: 6px;
--shadow: 0 1px 2px rgb(0 0 0 / 0.30), 0 4px 16px rgb(0 0 0 / 0.35);
--shadow-lg: 0 4px 10px rgb(0 0 0 / 0.40), 0 12px 32px rgb(0 0 0 / 0.50);
--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
@@ -36,18 +39,66 @@
html, body { height: 100%; }
/* The visible page background lives on <html> (the canvas). <body> must
stay transparent and must NOT create a stacking context, or the
z-index:-1 background layers below would be painted over. */
html { background: var(--bg); }
body {
margin: 0;
font-family: var(--font);
font-size: 16px;
line-height: 1.55;
color: var(--ink);
background: var(--bg);
background: transparent;
position: relative;
display: flex;
flex-direction: column;
min-height: 100dvh;
}
/* ---------- Animated background (pure CSS, zero JS — phase 08) ---------- */
/* Fine drifting grid: 44px cells, 1px lines at ~35% --line alpha, masked
with a radial fade (visible center-top, fading to the edges). The drift
delta (44px) equals one cell, so the loop is seamless. */
body::before {
content: "";
position: fixed;
inset: 0;
z-index: -1;
pointer-events: none;
background-image:
linear-gradient(to right, rgb(38 48 74 / 0.35) 1px, transparent 1px),
linear-gradient(to bottom, rgb(38 48 74 / 0.35) 1px, transparent 1px);
background-size: 44px 44px;
-webkit-mask-image: radial-gradient(120% 90% at 50% 0%, black 25%, transparent 78%);
mask-image: radial-gradient(120% 90% at 50% 0%, black 25%, transparent 78%);
animation: bg-grid-drift 60s linear infinite;
}
@keyframes bg-grid-drift {
from { background-position: 0 0, 0 0; }
to { background-position: 44px 44px, 44px 44px; }
}
/* Two large, soft radial glows: indigo top-left, cyan bottom-right —
14s ease-in-out breathing (opacity + scale). No filter:blur (perf). */
body::after {
content: "";
position: fixed;
inset: 0;
z-index: -1;
pointer-events: none;
background-image:
radial-gradient(circle 56rem at 12% 8%, rgb(109 120 242 / 0.14), transparent 62%),
radial-gradient(circle 60rem at 88% 92%, rgb(34 211 238 / 0.10), transparent 62%);
animation: bg-glow-breathe 14s ease-in-out infinite alternate;
}
@keyframes bg-glow-breathe {
from { opacity: 0.65; transform: scale(1); }
to { opacity: 1; transform: scale(1.05); }
}
.container {
width: 100%;
max-width: 72rem;
@@ -76,7 +127,7 @@ body {
left: -9999px;
top: 0;
background: var(--brand);
color: #fff;
color: var(--bg);
padding: 0.6rem 1rem;
border-radius: 0 0 var(--radius-sm) 0;
z-index: 100;
@@ -89,15 +140,34 @@ body {
border-radius: 4px;
}
::selection {
background: rgb(109 120 242 / 0.45);
color: var(--ink);
}
/* ---------- Header ---------- */
.app-header {
height: var(--header-h);
background: var(--surface);
border-bottom: 1px solid var(--line);
position: sticky;
top: 0;
z-index: 20;
}
/* 2px brand→cyan gradient hairline under the sticky header (phase 08). */
.app-header::after {
content: "";
position: absolute;
inset-inline: 0;
bottom: -2px;
height: 2px;
pointer-events: none;
background: linear-gradient(
90deg,
rgb(109 120 242 / 0.55),
rgb(34 211 238 / 0.30) 45%,
rgb(34 211 238 / 0.05) 90%
);
}
.header-inner {
height: 100%;
display: flex;
@@ -113,7 +183,13 @@ body {
color: var(--ink);
text-decoration: none;
}
.brand-mark { font-size: 1.4rem; }
/* Mono wordmark with letter-spacing — the "technical" touch (phase 08). */
.brand-text {
font-family: var(--mono);
font-size: 0.95rem;
letter-spacing: 0.08em;
}
.brand-mark { width: 22px; height: 22px; flex: 0 0 auto; display: block; }
.brand-text strong { color: var(--brand-ink); font-weight: 700; }
.app-nav { display: flex; gap: 0.25rem; }
@@ -129,7 +205,7 @@ body {
align-items: center;
}
.nav-link:hover { background: var(--brand-soft); color: var(--brand-ink); }
.nav-link.is-active { background: var(--brand); color: #fff; }
.nav-link.is-active { background: var(--brand); color: var(--bg); }
/* ---------- Main frame ---------- */
.app-main {
@@ -166,10 +242,14 @@ body {
border-radius: 50%;
display: grid;
place-items: center;
font-size: 1.05rem;
background: var(--brand-soft);
border: 1px solid var(--line);
}
/* Emoji-free inline SVG glyphs (phase 08), currentColor so the theme
controls the stroke; sized to sit crisp at ~16-20px. */
.msg .avatar svg { width: 20px; height: 20px; display: block; }
.msg.brain .avatar { color: var(--brand-ink); }
.msg.user .avatar { color: var(--ink-soft); }
.msg-body {
max-width: 85%;
/* min-width: 0 — as a flex item this overrides min-width:auto so a
@@ -190,9 +270,10 @@ body {
}
.bubble p { margin: 0.2rem 0; }
.bubble pre {
background: #10131c;
background: #0d1120;
color: #e6e9f2;
padding: 0.7rem 0.9rem;
border: 1px solid var(--line);
border-radius: var(--radius-sm);
overflow-x: auto;
font-size: 0.85rem;
@@ -206,10 +287,10 @@ body {
.msg.user .bubble {
background: var(--brand);
border-color: var(--brand);
color: #fff;
color: var(--bg);
border-bottom-right-radius: 4px;
}
.msg.user .bubble code { background: rgb(255 255 255 / 0.18); }
.msg.user .bubble code { background: rgb(10 14 23 / 0.16); }
.msg.brain .bubble { border-bottom-left-radius: 4px; }
.msg.brain.is-deflected .bubble {
@@ -245,7 +326,7 @@ body {
text-overflow: ellipsis;
white-space: nowrap;
}
.source-chip:hover { background: #e2e5fd; }
.source-chip:hover { background: #2a345f; }
/* "Maybe try" chips under a deflected bubble (phase 04). Unlike the
onboarding row (which scrolls horizontally on mobile), this group wraps
@@ -295,7 +376,8 @@ body {
text-align: center;
margin-top: 1rem;
}
.empty-state-emoji { font-size: 2.6rem; line-height: 1; }
.empty-state-glyph { color: var(--brand-ink); width: 44px; height: 44px; margin-inline: auto; }
.empty-state-glyph svg { width: 44px; height: 44px; display: block; }
.empty-state-title { margin: 0.8rem 0 0.4rem; font-size: 1.5rem; color: var(--ink); }
.empty-state-sub { margin: 0 auto 1.25rem; max-width: 34rem; color: var(--ink-soft); }
.empty-state-sub code { font-family: var(--mono); font-size: 0.85em; background: var(--brand-soft); padding: 0.1em 0.35em; border-radius: 5px; }
@@ -322,7 +404,7 @@ body {
cursor: pointer;
transition: background 0.15s ease, transform 0.05s ease;
}
.suggestion-chip:hover { background: #e2e5fd; }
.suggestion-chip:hover { background: #2a345f; }
.suggestion-chip:active { transform: scale(0.98); }
/* ---------- Composer ---------- */
@@ -347,6 +429,7 @@ body {
padding: 0.55rem 0.5rem;
background: transparent;
}
.composer textarea::placeholder { color: var(--ink-soft); }
.send-btn {
display: inline-flex;
align-items: center;
@@ -357,19 +440,21 @@ body {
border: 0;
border-radius: var(--radius-sm);
background: var(--brand);
color: #fff;
/* Dark ink on brand (5.2:1) — never white on brand (3.7:1, fails). */
color: var(--bg);
font: inherit;
font-weight: 700;
cursor: pointer;
padding-inline: 1rem;
}
.send-btn:hover:not(:disabled) { background: #4338ca; }
.send-btn:hover:not(:disabled) { background: #7d88f5; }
.send-btn:disabled { background: #a5b4fc; cursor: not-allowed; }
/* Busy spinner: dark arc (--bg) on the #a5b4fc busy button = 9.7:1. */
.spinner {
width: 16px; height: 16px;
border: 2.5px solid rgb(255 255 255 / 0.4);
border-top-color: #fff;
border: 2.5px solid rgb(10 14 23 / 0.30);
border-top-color: var(--bg);
border-radius: 50%;
animation: spin 0.8s linear infinite;
}
@@ -377,6 +462,11 @@ body {
@media (prefers-reduced-motion: reduce) {
.spinner { animation-duration: 2s; }
}
/* The background layers are the only other motion on the page: under
reduced motion they go static (grid + glows remain, just still). */
@media (prefers-reduced-motion: reduce) {
body::before, body::after { animation: none; }
}
/* ---------- Banners ---------- */
.kb-banner {
@@ -392,6 +482,7 @@ body {
font-weight: 600;
}
.kb-banner.is-error { background: var(--err-bg); color: var(--err-ink); border-color: var(--err-line); }
.kb-banner svg { width: 18px; height: 18px; flex: 0 0 auto; display: block; }
/* ---------- Sources page ---------- */
.sources-shell {
@@ -419,7 +510,8 @@ body {
flex-direction: column;
gap: 0.15rem;
}
.stat-value { font-size: 2rem; font-weight: 800; color: var(--brand-ink); line-height: 1.1; }
/* Mono stat values — technical readout (phase 08). */
.stat-value { font-family: var(--mono); font-size: 2rem; font-weight: 800; color: var(--brand-ink); line-height: 1.1; }
.stat-value-sm { font-size: 1.15rem; font-weight: 700; }
.stat-label { color: var(--ink-soft); font-size: 0.88rem; font-weight: 600; }
@@ -474,7 +566,7 @@ body {
@media (max-width: 640px) {
:root { --header-h: 58px; }
.container { padding-inline: 0.9rem; }
.brand-text { font-size: 1rem; }
.brand-text { font-size: 0.88rem; }
.nav-link { padding: 0.45rem 0.7rem; font-size: 0.9rem; }
.msg-body { max-width: 92%; }
.empty-state { padding: 1.75rem 1.1rem; margin-top: 0.25rem; }