Add light/dark mode toggle for the UI

The UI stylesheet already centralized its palette in a :root block, so this
mostly meant (1) migrating the ~30 colors still hardcoded in rules into
variables so they flip in one place, and (2) adding a [data-theme="dark"]
override palette. Artifact rendering is untouched — those use the separate
static/themes/*.css and the preview backdrop stays white by design, since
artifacts (charts, reports) are authored light.

- Toggle lives in the gear-menu dropdown (Dark mode / Light mode), persists
  to localStorage.
- A tiny inline script in each page <head> (feed, settings, login) applies
  the stored theme before first paint, so dark-mode users never see a white
  flash on load.
- color-scheme: dark on the dark palette makes native form controls
  (inputs, buttons) render dark too.
- Semantic accents (kept=green, shared=blue, today, danger) got
  dark-appropriate variants; status/data-viz colors (usage bar, tag chips)
  and the white artifact backdrop are intentionally left as-is.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
peter 2026-09-02 17:14:56 +01:00
parent c9edac62cf
commit 9a3b381f39
5 changed files with 145 additions and 35 deletions

View file

@ -12,12 +12,71 @@
--selected-artifact-bg: #eaf3ff;
--selected-artifact-rail: #dcecff;
--control-border: #d9dee6;
/* Neutrals/accents that were previously hardcoded in rules, pulled into
variables so the dark override below can flip them in one place. */
--accent: #3d4552;
--accent-border: #343b46;
--on-accent: #ffffff;
--control-bg: #f0f2f5;
--row-hover: #f6f9fd;
--time-rail-bg: #f3f5f7;
--splitter-hover: #b8c0cc;
--scrollbar-thumb: var(--scrollbar-thumb);
--focus-ring: var(--focus-ring);
/* Semantic accents (success = kept, info = shared, today, danger). */
--success-bg: #eaf7ed;
--success-text: #28583a;
--success-border: #9bd4ab;
--info-bg: #eaf2fb;
--info-text: #1d4d85;
--info-border: #9cc0ed;
--today-bg: #d8f1df;
--today-text: #245238;
--danger-bg: #fdecea;
--danger-text: #a3312a;
--danger-text-plain: #c14f4f;
color-scheme: light;
font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
background: var(--app-bg);
color: var(--text);
}
[data-theme="dark"] {
--app-bg: #15171c;
--surface: #1d2026;
--surface-alt: #242832;
--pane-bar-bg: #1d2026;
--grid-line: #333842;
--text: #e3e6eb;
--muted: #99a2b0;
--selected-day-bg: #4a6ea8;
--day-tile-bg: #2a2f3a;
--selected-artifact-bg: #26344a;
--selected-artifact-rail: #32405a;
--control-border: #3a404b;
--accent: #4a6ea8;
--accent-border: #3d5a8a;
--on-accent: #ffffff;
--control-bg: #2a2f3a;
--row-hover: #262b34;
--time-rail-bg: #22262e;
--splitter-hover: #4a525f;
--scrollbar-thumb: rgba(160, 170, 190, 0.35);
--focus-ring: var(--focus-ring);
--success-bg: #1e3a2a;
--success-text: #7fce9c;
--success-border: #2f5a40;
--info-bg: #1c3050;
--info-text: #8fb8e8;
--info-border: #34517d;
--today-bg: #1e3a2a;
--today-text: #7fce9c;
--danger-bg: #3a2020;
--danger-text: #e89b95;
--danger-text-plain: #e89b95;
color-scheme: dark;
}
html,
body {
height: 100%;
@ -174,10 +233,10 @@ h1 {
}
.filter button {
background: #3d4552;
border: 1px solid #343b46;
background: var(--accent);
border: 1px solid var(--accent-border);
border-radius: 4px;
color: #ffffff;
color: var(--on-accent);
cursor: pointer;
font: inherit;
font-weight: 700;
@ -185,7 +244,7 @@ h1 {
}
.view-toggle {
background: #f0f2f5;
background: var(--control-bg);
border: 1px solid var(--control-border);
border-radius: 4px;
display: flex;
@ -201,8 +260,8 @@ h1 {
}
.view-toggle a.selected {
background: #3d4552;
color: #ffffff;
background: var(--accent);
color: var(--on-accent);
}
.feed {
@ -257,7 +316,7 @@ h1 {
}
.source-sidebar:hover .source-list {
scrollbar-color: rgba(61, 69, 82, 0.35) transparent;
scrollbar-color: var(--scrollbar-thumb) transparent;
scrollbar-width: thin;
}
@ -271,7 +330,7 @@ h1 {
/* Artifact list: scrollbar always visible so it doesn't jump on hover. */
.artifact-list {
scrollbar-color: rgba(61, 69, 82, 0.35) transparent;
scrollbar-color: var(--scrollbar-thumb) transparent;
scrollbar-width: thin;
}
@ -281,7 +340,7 @@ h1 {
.source-list::-webkit-scrollbar-thumb,
.artifact-list::-webkit-scrollbar-thumb {
background: rgba(61, 69, 82, 0.35);
background: var(--scrollbar-thumb);
border-radius: 999px;
}
@ -326,7 +385,7 @@ h1 {
.splitter:hover,
.is-resizing .splitter {
background: #b8c0cc;
background: var(--splitter-hover);
}
.is-resizing {
@ -376,18 +435,18 @@ h1 {
}
.source-link:focus-visible {
outline: 2px solid #8ab4f8;
outline: 2px solid var(--focus-ring);
outline-offset: 2px;
}
.source-link.selected {
background: var(--selected-day-bg);
color: #ffffff;
color: var(--on-accent);
}
.source-link.selected .source-name,
.source-link.selected .source-count {
color: #ffffff;
color: var(--on-accent);
}
.source-name {
@ -435,9 +494,9 @@ h1 {
}
.today-badge {
background: #d8f1df;
background: var(--today-bg);
border-radius: 999px;
color: #245238;
color: var(--today-text);
display: inline-block;
font-size: 0.62rem;
font-style: normal;
@ -498,13 +557,13 @@ h1 {
}
.artifact-row:hover {
background: #f6f9fd;
background: var(--row-hover);
box-shadow: none;
}
.artifact-row:focus-visible {
outline: 0;
box-shadow: inset 0 0 0 1px #8ab4f8;
box-shadow: inset 0 0 0 1px var(--focus-ring);
}
.artifact-row.selected {
@ -559,9 +618,9 @@ h1 {
.kept-badge {
align-items: center;
background: #eaf7ed;
background: var(--success-bg);
border-radius: 4px;
color: #28583a;
color: var(--success-text);
display: inline-flex;
font-size: 0.66rem;
font-weight: 700;
@ -577,9 +636,9 @@ h1 {
.shared-badge {
align-items: center;
background: #eaf2fb;
background: var(--info-bg);
border-radius: 4px;
color: #1d4d85;
color: var(--info-text);
display: inline-flex;
font-size: 0.66rem;
font-weight: 700;
@ -622,7 +681,7 @@ h1 {
.artifact-time {
align-items: center;
background: #f3f5f7;
background: var(--time-rail-bg);
border-right: 1px solid var(--grid-line);
display: flex;
justify-content: flex-end;
@ -653,7 +712,7 @@ h1 {
}
kbd {
background: #f0f2f5;
background: var(--control-bg);
border: 1px solid var(--control-border);
border-radius: 4px;
color: var(--text);
@ -784,7 +843,7 @@ kbd {
.source-sidebar,
.artifact-sidebar {
border-bottom: 1px solid #d9c9ad;
border-bottom: 1px solid var(--grid-line);
border-right: 0;
max-height: 32vh;
}
@ -834,7 +893,7 @@ kbd {
}
.login-error {
color: #c14f4f;
color: var(--danger-text-plain);
font-size: 0.82rem;
}
@ -884,9 +943,9 @@ kbd {
}
.settings-messages {
background: #eaf7ed;
background: var(--success-bg);
border-radius: 8px;
color: #28583a;
color: var(--success-text);
list-style: none;
margin: 0 0 1.2rem;
padding: 0.6rem 0.9rem;
@ -901,15 +960,15 @@ kbd {
}
.keep-button.kept {
background: #eaf7ed;
border-color: #9bd4ab;
color: #28583a;
background: var(--success-bg);
border-color: var(--success-border);
color: var(--success-text);
}
.share-button.shared {
background: #eaf2fb;
border-color: #9cc0ed;
color: #1d4d85;
background: var(--info-bg);
border-color: var(--info-border);
color: var(--info-text);
}
.share-link-box {
@ -1014,9 +1073,9 @@ kbd {
}
.storage-warning {
background: #fdecea;
background: var(--danger-bg);
border-radius: 8px;
color: #a3312a;
color: var(--danger-text);
font-size: 0.85rem;
padding: 0.6rem 0.9rem;
}

View file

@ -12,6 +12,7 @@
<div class="user-menu-dropdown" hidden data-user-menu>
<a href="{% url 'settings-account' %}">Settings</a>
<a href="{% url 'settings-demo-data' %}">Demo Data</a>
<button type="button" data-theme-toggle>Dark mode</button>
<form method="post" action="{% url 'logout' %}">{% csrf_token %}<button type="submit">Log out</button></form>
</div>
</div>
@ -33,5 +34,25 @@
toggle.setAttribute("aria-expanded", "false");
}
});
const themeToggle = document.querySelector("[data-theme-toggle]");
if (themeToggle) {
const syncLabel = () => {
const isDark = document.documentElement.getAttribute("data-theme") === "dark";
themeToggle.textContent = isDark ? "Light mode" : "Dark mode";
};
syncLabel();
themeToggle.addEventListener("click", () => {
const isDark = document.documentElement.getAttribute("data-theme") === "dark";
if (isDark) {
document.documentElement.removeAttribute("data-theme");
try { localStorage.setItem("daybook.theme", "light"); } catch (e) {}
} else {
document.documentElement.setAttribute("data-theme", "dark");
try { localStorage.setItem("daybook.theme", "dark"); } catch (e) {}
}
syncLabel();
});
}
})();
</script>

View file

@ -5,6 +5,16 @@
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>AgentFeed</title>
<link rel="stylesheet" href="/static/daybook.css">
<script>
// Set the theme before first paint so dark-mode users never see a light flash.
(function () {
try {
if (localStorage.getItem("daybook.theme") === "dark") {
document.documentElement.setAttribute("data-theme", "dark");
}
} catch (e) {}
})();
</script>
</head>
<body>
{% include "artifacts/_topbar.html" with topbar_toolbar="artifacts/_feed_toolbar.html" %}

View file

@ -5,6 +5,16 @@
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Log in — AgentFeed</title>
<link rel="stylesheet" href="/static/daybook.css">
<script>
// Set the theme before first paint so dark-mode users never see a light flash.
(function () {
try {
if (localStorage.getItem("daybook.theme") === "dark") {
document.documentElement.setAttribute("data-theme", "dark");
}
} catch (e) {}
})();
</script>
</head>
<body>
<main class="login-page">

View file

@ -5,6 +5,16 @@
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Settings — AgentFeed</title>
<link rel="stylesheet" href="/static/daybook.css">
<script>
// Set the theme before first paint so dark-mode users never see a light flash.
(function () {
try {
if (localStorage.getItem("daybook.theme") === "dark") {
document.documentElement.setAttribute("data-theme", "dark");
}
} catch (e) {}
})();
</script>
</head>
<body>
{% include "artifacts/_topbar.html" %}