hermes-agent/apps/desktop/src/styles.css
emozilla 71e864b600 feat(desktop): render LaTeX math via KaTeX after streaming completes
Add @streamdown/math plugin to the chat markdown renderer.
Inline ($x^2$) and block ($$...$$) math both supported with
singleDollarTextMath enabled. Plugin is gated to non-streaming state
to match the existing pattern for syntax highlighting — math renders
when the message completes, avoiding KaTeX re-render churn during
streaming. KaTeX CSS is imported in styles.css; ~30KB CSS + ~430KB
JS added to the bundle. Smoothness improvements during streaming
deferred to a follow-up.
2026-05-12 01:04:11 -04:00

582 lines
17 KiB
CSS

@import 'tailwindcss';
@plugin '@tailwindcss/typography';
@import 'tw-shimmer';
@import 'katex/dist/katex.min.css';
@custom-variant dark (&:is(.dark *));
@font-face {
font-family: 'Collapse';
font-style: normal;
font-weight: 700;
font-display: swap;
src: url('../../../node_modules/@nous-research/ui/dist/fonts/Collapse-Bold.woff2') format('woff2');
}
@theme inline {
--color-background: var(--dt-background);
--color-foreground: var(--dt-foreground);
--color-card: var(--dt-card);
--color-card-foreground: var(--dt-card-foreground);
--color-muted: var(--dt-muted);
--color-muted-foreground: var(--dt-muted-foreground);
--color-popover: var(--dt-popover);
--color-popover-foreground: var(--dt-popover-foreground);
--color-primary: var(--dt-primary);
--color-primary-foreground: var(--dt-primary-foreground);
--color-secondary: var(--dt-secondary);
--color-secondary-foreground: var(--dt-secondary-foreground);
--color-accent: var(--dt-accent);
--color-accent-foreground: var(--dt-accent-foreground);
--color-border: var(--dt-border);
--color-input: var(--dt-input);
--color-ring: var(--dt-ring);
--color-destructive: var(--dt-destructive);
--color-destructive-foreground: var(--dt-destructive-foreground);
--color-midground: var(--dt-midground);
--color-midground-foreground: var(--dt-midground-foreground);
--font-sans: var(--dt-font-sans);
--font-mono: var(--dt-font-mono);
--spacing-mul: var(--dt-spacing-mul, 1);
--radius-xs: calc(var(--radius-scalar) * 0.125rem);
--radius-sm: calc(var(--radius-scalar) * 0.5rem);
--radius-md: calc(var(--radius-scalar) * 0.625rem);
--radius-lg: calc(var(--radius-scalar) * 0.75rem);
--radius-xl: calc(var(--radius-scalar) * 1rem);
--radius-2xl: calc(var(--radius-scalar) * 1.5rem);
--radius-3xl: calc(var(--radius-scalar) * 2rem);
--radius-4xl: calc(var(--radius-scalar) * 2.5rem);
--color-sidebar-ring: var(--sidebar-ring);
--color-sidebar-border: var(--sidebar-border);
--color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
--color-sidebar-accent: var(--sidebar-accent);
--color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
--color-sidebar-primary: var(--sidebar-primary);
--color-sidebar-foreground: var(--sidebar-foreground);
--color-sidebar: var(--sidebar);
--shadow-ink: var(--dt-foreground);
--shadow-header:
0 0.5rem 0.875rem -0.375rem color-mix(in srgb, var(--dt-background) 96%, transparent),
0 1.25rem 2rem -0.875rem color-mix(in srgb, var(--dt-background) 82%, transparent),
0 2rem 3rem -1.5rem color-mix(in srgb, var(--dt-background) 55%, transparent);
--shadow-composer:
0 0 0 0.0625rem color-mix(in srgb, var(--shadow-ink) 4%, transparent),
0 0.0625rem 0.25rem color-mix(in srgb, var(--shadow-ink) 3%, transparent);
--shadow-composer-focus:
0 0 0 0.125rem color-mix(in srgb, var(--dt-composer-ring) calc(14% * var(--composer-ring-strength)), transparent),
0 0 0 0.0625rem color-mix(in srgb, var(--dt-composer-ring) calc(26% * var(--composer-ring-strength)), transparent),
0 0.1875rem 0.625rem color-mix(in srgb, var(--shadow-ink) 4%, transparent);
}
@layer base {
:root {
color-scheme: dark;
--dt-background: #f7f7f7;
--dt-foreground: #242424;
--dt-card: #ffffff;
--dt-card-foreground: #242424;
--dt-muted: #f0f0ef;
--dt-muted-foreground: #737373;
--dt-popover: #ffffff;
--dt-popover-foreground: #242424;
--dt-primary: #cf806d;
--dt-primary-foreground: #ffffff;
--dt-secondary: #f1f1f0;
--dt-secondary-foreground: #2d2d2d;
--dt-accent: #eeeeed;
--dt-accent-foreground: #242424;
--dt-border: #dfdfdc;
--dt-input: #ddddda;
--dt-ring: #b97969;
--dt-destructive: #b94a3a;
--dt-destructive-foreground: #ffffff;
--dt-sidebar-bg: #fafafa;
--dt-sidebar-border: #e2e2df;
--dt-user-bubble: #f2f2f1;
--dt-user-bubble-border: #dededb;
--dt-font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', system-ui, sans-serif;
--dt-font-mono: 'SF Mono', ui-monospace, 'Cascadia Code', Menlo, Consolas, monospace;
--dt-base-size: 0.875rem;
--dt-line-height: 1.55;
--dt-letter-spacing: 0;
--dt-spacing-mul: 1;
--radius: 0.75rem;
--radius-scalar: 0.2;
/* Space under last message vs overlay composer — driven by the measured composer height (see composer/index.tsx). */
--thread-last-message-clearance: calc(var(--composer-measured-height) + 1.25rem);
--composer-shell-pad-block-end: 2.5rem;
--message-text-indent: 1.5rem;
--composer-width: 88%;
--composer-control-size: 2rem;
--composer-control-primary-size: 2.125rem;
--composer-control-gap: 0.375rem;
--composer-row-gap: 0.375rem;
--composer-ring-strength: 1;
--composer-surface-pad-x: 0.625rem;
--composer-surface-pad-y: 0.5rem;
--composer-input-min-height: 2rem;
--composer-input-max-height: 9.375rem;
--composer-input-inline-min-width: 8rem;
--composer-fallback-height: 2.75rem;
--composer-measured-height: calc(0.5rem + var(--composer-shell-pad-block-end) + var(--composer-fallback-height));
--composer-surface-measured-height: var(--composer-fallback-height);
--thread-viewport-height: max(
0px,
calc(100% - var(--composer-measured-height) + var(--composer-surface-measured-height))
);
--vsq: min(0.5vh, 0.5vw);
--image-preview-max-width: 34rem;
--image-preview-height: clamp(16.25rem, calc(var(--vsq) * 100), 26.25rem);
--sidebar-width: 14rem;
--chat-min-width: 24rem;
--titlebar-control-size: 1.25rem;
--titlebar-control-height: 1.375rem;
--sidebar-content-inline-padding: 1rem;
--sidebar: var(--dt-sidebar-bg);
--sidebar-foreground: var(--dt-foreground);
--sidebar-primary: var(--dt-primary);
--sidebar-primary-foreground: var(--dt-primary-foreground);
--sidebar-accent: var(--dt-accent);
--sidebar-accent-foreground: var(--dt-accent-foreground);
--sidebar-border: var(--dt-sidebar-border);
--sidebar-ring: var(--dt-ring);
--sidebar-edge-border: color-mix(in srgb, var(--dt-sidebar-border) 42%, transparent);
--chrome-action-hover: color-mix(in srgb, var(--dt-accent) 72%, transparent);
--midground: var(--dt-midground);
--background: var(--dt-background);
--foreground: var(--dt-foreground);
--warm-glow: color-mix(in srgb, var(--dt-midground) 35%, transparent);
/* `--noise-opacity-mul` is set per-mode by `applyTheme()`. */
--noise-opacity-mul: 1;
--backdrop-invert-mul: 1;
}
:root.dark {
--sidebar-edge-border: color-mix(in srgb, var(--dt-sidebar-border) 78%, transparent);
--composer-ring-strength: 1.65;
--backdrop-invert-mul: 0;
}
* {
box-sizing: border-box;
border-color: var(--dt-border);
}
html,
body,
#root {
height: 100%;
}
html {
font-size: var(--dt-base-size, 0.875rem);
}
body {
margin: 0;
background: var(--dt-background);
color: var(--dt-foreground);
font-family: var(--dt-font-sans);
line-height: var(--dt-line-height, 1.55);
letter-spacing: var(--dt-letter-spacing, 0);
overflow: hidden;
-webkit-user-select: none;
user-select: none;
-webkit-font-smoothing: antialiased;
}
button,
textarea {
font: inherit;
}
*::selection {
background: var(--dt-midground);
color: var(--dt-midground-foreground);
}
}
.dither {
background: repeating-conic-gradient(currentColor 0% 25%, transparent 0% 50%) 0 0 / 2px 2px;
}
:root:not([style*='--theme-asset-bg:']) .theme-default-filler {
display: block;
}
:root[style*='--theme-asset-bg:'] .theme-default-filler {
display: none;
}
@layer utilities {
[class*='rounded-full'],
[class*=':rounded-full'] {
border-radius: calc(var(--radius-scalar) * 9999px);
}
}
@keyframes arc-border {
0% {
background-position: 15% 15%;
}
100% {
background-position: 75% 75%;
}
}
.arc-border {
--arc-c0: color-mix(in srgb, var(--dt-foreground) 0%, transparent);
--arc-c1: var(--dt-midground);
--arc-c2: var(--dt-background);
--arc-angle: 160deg;
--arc-width: 1.25px;
--arc-inset: -2px;
--arc-duration: 2.23s;
pointer-events: none;
position: absolute;
overflow: hidden;
border-radius: inherit;
inset: var(--arc-inset);
padding: var(--arc-width);
mask:
linear-gradient(#000 0 0) content-box,
linear-gradient(#000 0 0);
-webkit-mask-composite: xor;
mask-composite: exclude;
}
:root.dark .arc-border {
--arc-c1: var(--dt-foreground);
}
.arc-border::before {
content: '';
position: absolute;
inset: 0;
border-radius: inherit;
background: linear-gradient(
var(--arc-angle),
transparent 0%,
var(--arc-c0) 15%,
var(--arc-c1) 20%,
var(--arc-c2) 25%,
transparent 35%,
transparent 40%,
var(--arc-c0) 55%,
var(--arc-c1) 60%,
var(--arc-c2) 65%,
transparent 75%,
transparent 80%,
var(--arc-c0) 95%,
var(--arc-c1) 100%
);
background-size: 300% 300%;
animation: arc-border var(--arc-duration) linear infinite;
}
@media (prefers-reduced-motion: reduce) {
.arc-border::before {
animation: none;
}
}
button {
-webkit-app-region: no-drag;
}
input,
textarea,
[contenteditable]:not([contenteditable='false']),
[data-slot='aui_user-message-root'],
[data-slot='aui_assistant-message-content'],
[data-selectable-text='true'],
[data-selectable-text='true'] * {
-webkit-user-select: text;
user-select: text;
}
button,
[role='button'] {
-webkit-user-select: none;
user-select: none;
}
img,
picture,
video,
canvas,
svg {
-webkit-user-select: none;
user-select: none;
}
img,
video,
canvas {
-webkit-user-drag: none;
}
/* Shared input chrome — mirrors composer hover/focus FX. Unlayered to beat Tailwind utilities. */
.desktop-input-chrome {
--ring-pct: 18%;
--ring-fall: var(--dt-input);
background: color-mix(in srgb, var(--dt-card) 68%, transparent);
border-color: color-mix(
in srgb,
var(--dt-composer-ring) calc(var(--ring-pct) * var(--composer-ring-strength)),
var(--ring-fall)
);
box-shadow: var(--shadow-composer);
transition:
background-color 200ms ease-out,
border-color 200ms ease-out,
box-shadow 200ms ease-out;
}
.desktop-input-chrome:hover {
--ring-pct: 30%;
background: color-mix(in srgb, var(--dt-card) 86%, transparent);
}
.desktop-input-chrome:focus {
--ring-pct: 45%;
--ring-fall: transparent;
background: var(--dt-card);
box-shadow: var(--shadow-composer-focus);
outline: none;
}
.desktop-input-chrome[aria-invalid='true'] {
border-color: var(--dt-destructive);
}
.desktop-input-chrome[aria-invalid='true']:focus {
box-shadow:
0 0 0 0.125rem color-mix(in srgb, var(--dt-destructive) 18%, transparent),
0 0 0 0.0625rem color-mix(in srgb, var(--dt-destructive) 34%, transparent),
0 0.1875rem 0.625rem color-mix(in srgb, var(--dt-destructive) 12%, transparent);
}
@layer components {
.scrollbar-dt,
.scrollbar-dt * {
scrollbar-width: thin;
scrollbar-color: color-mix(in srgb, var(--dt-midground) 18%, transparent) transparent;
}
.scrollbar-dt::-webkit-scrollbar,
.scrollbar-dt *::-webkit-scrollbar {
width: 0.5rem;
height: 0.5rem;
}
.scrollbar-dt::-webkit-scrollbar-track,
.scrollbar-dt::-webkit-scrollbar-corner,
.scrollbar-dt *::-webkit-scrollbar-track,
.scrollbar-dt *::-webkit-scrollbar-corner {
background: transparent;
}
.scrollbar-dt::-webkit-scrollbar-thumb,
.scrollbar-dt *::-webkit-scrollbar-thumb {
background: color-mix(in srgb, var(--dt-midground) 18%, transparent);
border-radius: 9999px;
border: 0.125rem solid transparent;
background-clip: padding-box;
}
.scrollbar-dt::-webkit-scrollbar-thumb:hover,
.scrollbar-dt *::-webkit-scrollbar-thumb:hover {
background: color-mix(in srgb, var(--dt-midground) 40%, transparent);
background-clip: padding-box;
}
.scrollbar-dt::-webkit-scrollbar-button,
.scrollbar-dt *::-webkit-scrollbar-button {
display: none;
}
}
/* Last thread row with a message root — avoids composer overlap (Chromium/Electron). */
[data-slot='aui_thread-content']
> :nth-last-child(
1
of
:is(
[data-slot='aui_assistant-message-root'],
[data-slot='aui_user-message-root'],
[data-slot='aui_system-message-root'],
[data-slot='aui_edit-composer-root'],
[data-slot='aui_response-loading']
)
) {
margin-bottom: var(--thread-last-message-clearance);
}
[data-slot='aui_assistant-message-content'] {
padding-left: var(--message-text-indent);
}
/* Tool/thinking blocks now live at message-text alignment (no leading
chevron column to escape into), so their headers and bodies share a
common left edge with the model's text. */
[data-slot='aui_assistant-message-content'] > [data-slot='tool-block'],
[data-slot='aui_assistant-message-content'] > [data-slot='aui_thinking-disclosure'] {
width: 100%;
max-width: 100%;
}
[data-slot='aui_assistant-message-content'] .aui-md [data-streamdown='code-block'] code {
max-width: none;
font-family: inherit;
font-size: inherit;
padding: 0;
border-radius: 0;
background: transparent;
color: inherit;
overflow-x: visible;
overflow-wrap: inherit;
vertical-align: baseline;
word-break: inherit;
white-space: inherit;
}
[data-slot='aui_assistant-message-content'] .aui-md [data-streamdown='code-block'] {
padding: 0 !important;
gap: 0 !important;
border: 0 !important;
background: transparent !important;
border-radius: 0 !important;
margin: 1rem 0 !important;
}
[data-slot='aui_assistant-message-content'] .aui-md [data-streamdown='code-block'] > * {
margin: 0 !important;
}
[data-slot='tool-block'] + [data-slot='tool-block'] {
margin-top: 0.25rem;
}
[data-slot='tool-block']:has(> :nth-child(2)) + [data-slot='tool-block'] {
margin-top: 0.625rem;
}
[data-slot='aui_assistant-message-content'] [data-slot='tool-block'] + .aui-md,
[data-slot='aui_assistant-message-content'] .aui-md + [data-slot='tool-block'] {
margin-top: 0.875rem;
}
/* Reasoning “Thinking” row — same column as message body, not full-bleed like tools */
[data-slot='aui_assistant-message-content'] .aui-md + [data-slot='aui_thinking-disclosure'],
[data-slot='aui_assistant-message-content'] [data-slot='aui_thinking-disclosure'] + .aui-md {
margin-top: 0.375rem;
}
[data-slot='aui_assistant-message-content'] > [data-slot='tool-block']:first-child {
margin-top: 0;
}
/* Message action bars — flat icon hits with default dim; only the hovered/focused control is full-strength. */
[data-slot='aui_msg-actions'] button {
border: 0;
border-radius: 0;
background: transparent;
box-shadow: none;
padding: 0;
gap: 0;
height: auto;
width: auto;
min-height: 0;
min-width: 0;
flex-shrink: 0;
color: var(--color-muted-foreground);
opacity: 0.5;
}
[data-slot='aui_msg-actions'] button:hover {
background: transparent;
color: var(--color-foreground);
opacity: 1;
}
[data-slot='aui_msg-actions'] button:active {
background: transparent;
}
[data-slot='aui_msg-actions'] button:focus-visible {
opacity: 1;
}
[data-slot='aui_msg-actions'] button svg {
width: 0.875rem;
height: 0.875rem;
}
/* Streaming caret + comet tail. Anchored to the cursor (not the block's
right edge) so it reads on short last lines. Spread inflates the bg-color
veil so it overlays text instead of haloing the tiny dither block. */
[data-slot='aui_assistant-message-content']
[data-status='running']
> div
> *:last-child::after {
content: '' !important;
display: inline-block;
position: relative;
z-index: 2;
width: 0.6em;
height: 1em;
margin-left: 0.18em;
vertical-align: middle;
border-radius: 1.5px;
background: repeating-conic-gradient(currentColor 0% 25%, transparent 0% 50%) 0 0 / 2px 2px;
color: color-mix(in srgb, var(--dt-foreground) 72%, transparent);
box-shadow:
-0.8ch 0 1.4ch 0.55em color-mix(in srgb, var(--dt-background) 80%, transparent),
-3ch 0 2.4ch 0.55em color-mix(in srgb, var(--dt-background) 64%, transparent),
-6.5ch 0 3.6ch 0.5em color-mix(in srgb, var(--dt-background) 44%, transparent),
-11ch 0 5ch 0.45em color-mix(in srgb, var(--dt-background) 28%, transparent),
-16ch 0 6.4ch 0.4em color-mix(in srgb, var(--dt-background) 16%, transparent),
-22ch 0 7.6ch 0.35em color-mix(in srgb, var(--dt-background) 8%, transparent),
0 0 0.4ch color-mix(in srgb, var(--dt-foreground) 28%, transparent);
animation: hermes-stream-caret 1.1s ease-in-out infinite;
}
@keyframes hermes-stream-caret {
0%, 100% { opacity: 0.95; }
50% { opacity: 0.45; }
}
@media (prefers-reduced-motion: reduce) {
[data-slot='aui_assistant-message-content']
[data-status='running']
> div
> *:last-child::after {
animation: none;
opacity: 0.8;
}
}
/* Live thinking preview window. Pairs with the ResizeObserver in
ThinkingDisclosure that pins scrollTop to the bottom — older lines fade
into the top mask while the latest tokens settle in below. */
.thinking-preview {
-webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 28%, black 100%);
mask-image: linear-gradient(to bottom, transparent 0%, black 28%, black 100%);
}