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selfpost/internal/web/static/panel.css
T
mix 251344f880 feat: machine metrics (CPU, memory, network) on the status page
The status page answered "are the components running" but said nothing
about the machine underneath them, so a server slowed to a crawl by a
busy processor or one about to have Postfix OOM-killed looked entirely
healthy until the queue backed up.

internal/health/machine.go reads the kernel's counters in /proc: the
aggregate processor times and core count from /proc/stat, the load
average from /proc/loadavg, memory and swap from /proc/meminfo, and
per-interface byte counters from /proc/net/dev.

CPU busy time and network throughput are rates, so a MachineSampler holds
the previous reading and each call reports the difference — one shared
sampler on the Server, since a per-request one would never have anything
to subtract. A window longer than a minute only re-baselines: a page
opened after the panel sat idle would otherwise average that whole
stretch and present it as the current load.

Memory is derived from MemAvailable rather than MemFree, because Linux
spends every spare page on cache and MemFree would report a permanent
emergency. A fully busy processor (>=90%) warns and an exhausted machine
(>=97%) errors, both counting towards the page's headline verdict, since
either delays or kills the mail path. Throughput has no comparable
threshold — what counts as a lot depends on the link — so it is reported
and never graded. Loopback is excluded: that traffic is the container
talking to itself.

Like every other check here, an unreadable counter degrades to "unknown"
with an explanation instead of failing the page, so the panel still runs
outside Linux for development.

The usage bars are <meter> elements. The panel's CSP has no inline-style
exemption, so a bar's length has to travel on an attribute; the element
also grades its own colour from low/high/optimum, and the percentage is
printed beside it for anything that does not render meters.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07 03:49:23 +03:00

291 lines
18 KiB
CSS

/* Panel stylesheet. It lives in a file rather than in a <style> block in the
layout so the panel's Content-Security-Policy can be a plain
"default-src 'self'" with no inline-style exemption. Any rule
added here must therefore stay here: an inline style="..." attribute in a
template is blocked by that policy and silently does nothing. */
/* Colour tokens. Light values live on :root; the dark media query below
reassigns the same names rather than re-declaring every rule that uses
them, so a rule needs !important nowhere in this file — the custom
property already carries the right value for the active scheme. */
:root {
color-scheme: light dark;
--bg: #f6f7f9; --fg: #1b1f24;
--card-bg: #fff;
--border: #e2e5e9; /* dividers: card, table, app, nav, code, encrypt-fields */
--control-border: #cfd4da; /* input, select, textarea, action buttons */
--input-bg: #fff;
--code-bg: #f0f2f4;
--surface-bg: #eef1f5; --surface-bg-hover: #e2e7ee; --surface-open-bg: #dde3ec;
--nav-active-bg: #e6ebf5;
--flash-bg: #ecfdf3; --flash-border: #abefc6; --flash-fg: #067647;
--credential-bg: #fffbeb; --credential-border: #f5c518;
--danger-bg: #fef3f2; --danger-border: #fecdca; --danger-fg: #b42318; --danger-bg-hover: #fee4e2;
--st-ok-bg: #ecfdf3; --st-ok-fg: #067647; --st-ok-border: #abefc6;
--st-warn-bg: #fffaeb; --st-warn-fg: #b54708; --st-warn-border: #fedf89;
--st-error-bg: #fef3f2; --st-error-fg: #b42318; --st-error-border: #fecdca;
--st-unknown-bg: #f0f2f4; --st-unknown-fg: #6b7280; --st-unknown-border: #e2e5e9;
}
@media (prefers-color-scheme: dark) {
:root {
--bg: #14171a; --fg: #e6e8eb;
--card-bg: #1d2125;
--border: #2b3138;
--control-border: #2b3138;
--input-bg: #14171a;
--code-bg: #14171a;
--surface-bg: #22262b; --surface-bg-hover: #2b3138; --surface-open-bg: #313841;
--nav-active-bg: #22303f;
--flash-bg: #0d2818; --flash-border: #1a5336; --flash-fg: #75d99b;
--credential-bg: #2a2408; --credential-border: #6b5a10;
--danger-bg: #2d1211; --danger-border: #6b201a; --danger-fg: #f5a29b; --danger-bg-hover: #3d1a18;
--st-ok-bg: #0d2818; --st-ok-fg: #75d99b; --st-ok-border: #1a5336;
--st-warn-bg: #2e2308; --st-warn-fg: #f5c86b; --st-warn-border: #6b5210;
--st-error-bg: #2d1211; --st-error-fg: #f5a29b; --st-error-border: #6b201a;
--st-unknown-bg: #22262b; --st-unknown-fg: #9aa3ad; --st-unknown-border: #2b3138;
}
}
* { box-sizing: border-box; }
body {
font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
margin: 0; padding: 2rem 1rem; background: var(--bg); color: var(--fg);
}
/* 48rem is a reading measure: right for the forms and prose that make up most
of the panel, and the width the navigation bar's two rows were sized for.
Page-specific overrides below widen or narrow it for the pages that need
something else. */
main { max-width: 48rem; margin: 0 auto; }
h1 { font-size: 1.4rem; margin: 0 0 1rem; }
/* The full mark, on the two pages that have no navigation bar to carry the
compact one. It takes the column's width so its edges line up with the card
below it, capped at that column's own 24rem; height stays automatic because
the stamp's proportions are part of the mark and it is never scaled unevenly.
The subtitle stops resolving below 280px, which a 320px viewport still clears
once the body's padding is taken off. */
.mark { display: block; width: 100%; max-width: 24rem; height: auto; margin-bottom: 1.4rem; }
.card {
background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px;
padding: 1.5rem; margin: 0 auto;
}
.card.narrow { max-width: 24rem; }
label { display: block; font-weight: 600; margin: 0.9rem 0 0.3rem; }
input {
width: 100%; padding: 0.55rem 0.7rem; font-size: 1rem;
border: 1px solid var(--control-border); border-radius: 6px; background: var(--input-bg); color: inherit;
}
/* One vocabulary for actions. Anything that performs an action looks like a
button: a <button>, or an <a> carrying .btn/.danger where the action is a
plain navigation (the delete confirmation page, the full queue view).
Several of these used to render as bold blue text instead — a POST wrapped
in form.inline, a <details> toggle, the delete links — which read as links
and left two appearances for the same kind of control. They all get the
button look now: filled for a card's own action, and the compact outlined
variant further down where actions cluster (table rows, the nav bar). Bare
<a> is left for links that read as part of a sentence or a list. */
button, a.btn, a.danger {
display: inline-block; margin-top: 1.2rem; padding: 0.6rem 1.1rem;
font: inherit; font-size: 1rem; font-weight: 600; text-decoration: none;
color: #fff; background: #2563eb; border: 0; border-radius: 6px; cursor: pointer;
}
button:hover, a.btn:hover { background: #1d4ed8; }
.error { color: #b42318; margin: 0.6rem 0 0; font-weight: 600; }
.muted { color: #6b7280; }
.topbar { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 1.2rem; }
.topbar .actions { display: flex; gap: 0.9rem; align-items: baseline; }
/* form.inline only exists so a POST can sit next to other content without a
form's block layout; its button is styled like any other. */
form.inline { display: inline; margin: 0; }
/* The three monitoring pages hold data instead of prose — seven columns of
send-log, and raw mail.log lines that are long by nature — and at the
default measure the send-log's Subject and Status were fighting over the
last inch while the log pages wrapped every second line. They get a wider
measure; every other page keeps the default one. The class comes from the
layout, which stamps the page name onto <main>. */
main.page-deliveries, main.page-mail_queue, main.page-system_log { max-width: 64rem; }
/* The signed-out pages are a single card and nothing else, and .card.narrow
centres itself inside whatever holds it — so at the panel's usual width the
card floated in the middle while the mark and the heading stayed at the far
left, three alignments on a page with four elements. Narrowing the column to
the card's own width makes the three line up and puts the block as a whole in
the middle of the page. */
main.page-login, main.page-setup { max-width: 24rem; }
.card + .card { margin-top: 1.2rem; }
.flash { background: var(--flash-bg); border: 1px solid var(--flash-border); color: var(--flash-fg); padding: 0.7rem 1rem; border-radius: 8px; margin-bottom: 1.2rem; }
table { width: 100%; border-collapse: collapse; }
/* A table column is at least as wide as the longest unbreakable run inside it,
and the panel's tables are full of runs with nothing to break on: email
addresses, domains, queue ids. One 40-character recipient was enough to widen
the send-log past its card and hang Status over the edge. Cells may break mid
word, so a column can always be squeezed to the width available. */
th, td { text-align: left; padding: 0.5rem 0.4rem; border-bottom: 1px solid var(--border); overflow-wrap: anywhere; }
/* The exception: a timestamp broken across two lines is unreadable, and it is
short enough to never be the reason a row does not fit. */
td.time { white-space: nowrap; }
th { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; color: #6b7280; }
td.actions { text-align: right; }
/* Subject is the one cell whose text we do not control. Breaking mid word (the
rule above) keeps it inside the card, but a long subject would do it by
growing the row several lines tall, which buries the rows around it. So the
subject is clipped to one line instead, with the whole of it in the tooltip.
The clamp sits on an inner block box rather than the cell because max-width
on a <td> is only advisory in the automatic table layout. */
td.subject span {
display: block; max-width: 18rem;
overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.code { display: block; white-space: pre-wrap; word-break: break-all; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
font-size: 0.85rem; background: var(--code-bg); border: 1px solid var(--border); border-radius: 6px; padding: 0.7rem 0.8rem; margin: 0.3rem 0 0; }
h2 { font-size: 1.05rem; margin: 0 0 0.4rem; }
.back { display: inline-block; margin-bottom: 1rem; }
/* Build version, closing every authenticated page. Quiet on purpose: it is
reference material, not something to read on the way past. */
.version { margin-top: 1.6rem; text-align: right; font-size: 0.8rem; color: #6b7280; }
select, textarea {
width: 100%; padding: 0.55rem 0.7rem; font-size: 1rem;
border: 1px solid var(--control-border); border-radius: 6px; background: var(--input-bg); color: inherit;
font-family: inherit;
}
textarea { resize: vertical; }
button.danger, a.danger { background: #b42318; }
button.danger:hover, a.danger:hover { background: #912018; }
/* The disclosure toggle is an action too, so it is drawn as a button (see the
compact rule below); the marker is dropped because the pressed background
already shows the open state. */
.actions summary { display: inline-block; list-style: none; cursor: pointer; }
.actions summary::-webkit-details-marker { display: none; }
/* Applications are a list of blocks, not table rows. As a table it fell apart:
four columns of which the last held six controls — two of them <details>
panels with textareas — never fit the panel's default width. The controls
wrapped into a staircase, .code on the login cell grew into a slab as tall
as the row, and the two text cells sat on the baseline halfway down it. One
block per application gives the identity a line of its own and the
controls a row of their own, at the width they actually need. */
.apps { list-style: none; margin: 1.2rem 0 0; padding: 0; }
.app { padding: 0.9rem 0; border-top: 1px solid var(--border); }
.app:last-child { padding-bottom: 0; }
.app-login { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 600; }
.app-addr { margin: 0.15rem 0 0; word-break: break-all; }
.app .actions { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.7rem; }
/* An open panel claims a row to itself: its textareas and number inputs want
the block's full width, not the width of the summary that opened them. */
.app .actions > details[open] { flex: 1 0 100%; }
details form { margin-top: 0.6rem; }
.credential { border-color: var(--credential-border); background: var(--credential-bg); }
/* Panel navigation: rendered once from the layout, so it is present on every
authenticated page without each content template having to include it. */
/* Two deliberate rows, not one. The six page entries need about 660px and the
session block another 260px, against the 738px the panel is wide — so the bar
was wrapping on its own, and the session landed left-aligned directly under
the entries, reading as a third row of navigation. Shortening labels would buy
the ~200px back but undo the point of naming each entry after its page. Rows
rather than columns: a two-column grid of entries came out a third taller
(107px against 83px) and no easier to read.
The session sits on top, at the right edge, and the page entries below — the
usual arrangement, and the layout template puts the session first so the
reading and tab order follow what the eye sees rather than being flipped by a
CSS `order`. The cost is that Sign out is the bar's first tab stop; nothing
activates on focus, so that is a reordering, not a hazard. */
.nav {
display: flex; flex-direction: column; align-items: stretch;
gap: 0.5rem; margin-bottom: 1.2rem; padding-bottom: 0.6rem;
border-bottom: 1px solid var(--border);
}
.nav .links, .nav .session { display: flex; flex-wrap: wrap; gap: 0.2rem 0.9rem; align-items: center; }
/* The top row: mark at one edge, session block at the other. Splitting them to
the edges is what makes the two rows read as two blocks rather than as one
ragged list that happened to wrap. */
.nav .top { display: flex; align-items: center; justify-content: space-between; gap: 0.9rem; }
.nav .session { justify-content: flex-end; }
/* The mark is a link, but not one of the bar's entries: it takes none of the
padding and rounding the entry rule below applies, so its own edge lines up
with the page rather than sitting half a step inside it. The stamp carries
about 4px of field inside the file at this size, which is what puts it level
with the icons of the row underneath. */
.nav .brand { padding: 0; }
/* width/height are on the element too, so the row reserves the space before the
SVG has loaded; these keep the ratio if the box is ever squeezed. The stamp's
proportions are part of the mark — it is never scaled unevenly. */
.nav .brand img { display: block; width: 110px; height: auto; }
/* Each entry pairs an icon with its label, so the entry itself is a flex row
rather than a run of text — that is also why the bar centres its items
instead of aligning them on the text baseline. Account is included: it is a
page like the others and would otherwise be the one bare word in the bar. */
.nav a, .nav [aria-current] {
display: inline-flex; align-items: center; gap: 0.4rem;
padding: 0.2rem 0.5rem; border-radius: 6px;
}
.nav [aria-current] {
font-weight: 600; color: var(--fg); background: var(--nav-active-bg); box-shadow: inset 0 -2px 0 #2563eb;
}
/* Sign out carries an icon too, so it needs the same row layout; its padding
and colours come from the compact button rule further down. */
.nav button { display: inline-flex; align-items: center; gap: 0.4rem; }
/* The icons draw in the entry's own colour, so the active entry's darker text,
a link's blue and Sign out's red all carry through without a rule apiece. */
.nav .icon { width: 1rem; height: 1rem; flex: none; }
/* Status badges: one vocabulary (ok/warn/error/unknown) shared by the server
status page and the per-domain DNS checks, so a colour means the same thing
everywhere. The class suffix is the check's own status value. */
.st {
display: inline-block; padding: 0.05rem 0.45rem; border-radius: 999px;
font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
vertical-align: middle; border: 1px solid transparent;
}
.st-ok { background: var(--st-ok-bg); color: var(--st-ok-fg); border-color: var(--st-ok-border); }
.st-warn { background: var(--st-warn-bg); color: var(--st-warn-fg); border-color: var(--st-warn-border); }
.st-error { background: var(--st-error-bg); color: var(--st-error-fg); border-color: var(--st-error-border); }
.st-unknown { background: var(--st-unknown-bg); color: var(--st-unknown-fg); border-color: var(--st-unknown-border); }
/* Usage bars on the status page's machine card. <meter> rather than a div sized
from the reading, because the CSP forbids inline styles (see the note at the
top of this file) and a bar's length has to travel on an attribute. The
element grades itself from low/high/optimum, so the colour matches the
badges' meaning without this file restating the thresholds — and a browser
that does not render meters falls back to the percentage beside it, which is
printed either way. */
meter { width: 5rem; height: 0.7rem; vertical-align: middle; margin-right: 0.4rem; }
/* The card's own two narrow columns. Cells may break mid word by default (see
the th, td rule above), which the detail column needs and these two must not
have: the resource names and the readings are short, and the long detail
beside them would otherwise win the width and leave "Memory" broken across
two lines. */
.metric { white-space: nowrap; }
.code-row { display: flex; align-items: flex-start; gap: 0.5rem; }
.code-row .code { flex: 1; min-width: 0; }
/* Compact outlined button: same affordance as the filled one but quiet enough
that several can sit together without shouting — the Copy buttons beside a
value, the controls of a table row or of an application block. Sign out
overrides this with .danger below since signing out is a deliberate,
singular action. .actions is the shared hook: a cell that holds controls, or
the control row of an application. */
button.copy, .actions button, .actions summary, .actions a.danger, .nav button {
margin: 0; padding: 0.45rem 0.7rem; font-size: 0.8rem; font-weight: 600;
border-radius: 6px; white-space: nowrap;
background: var(--surface-bg); color: #2563eb; border: 1px solid var(--control-border);
}
button.copy:hover, .actions button:hover, .actions summary:hover,
.actions a.danger:hover, .nav button:hover { background: var(--surface-bg-hover); }
button.copy { flex: none; margin-top: 0.3rem; }
.actions details[open] > summary { background: var(--surface-open-bg); }
.actions button.danger, .actions a.danger, .nav button.danger {
color: var(--danger-fg); background: var(--danger-bg); border-color: var(--danger-border);
}
.actions button.danger:hover, .actions a.danger:hover, .nav button.danger:hover { background: var(--danger-bg-hover); }
/* The optional "encrypt this download" block on the backup, export and import
forms. Its label is the one checkbox in the panel, so it opts out of the
block-level label rule above and sits on one line with its box; the fields it
reveals are indented under it to read as its consequence rather than as three
more fields of the form. panel.js hides the inner block until the box is
ticked (and empties it when unticked); without JavaScript everything stays
visible, which the server handles identically. */
.encrypt { margin-top: 1.2rem; }
.encrypt label.check {
display: flex; align-items: center; gap: 0.5rem; margin: 0; font-weight: 600;
}
.encrypt label.check input { width: auto; margin: 0; }
.encrypt-fields {
margin-left: 1.6rem; padding-left: 0.9rem; border-left: 2px solid var(--border);
}
.encrypt-fields label { margin-top: 0.7rem; }
.encrypt-fields .muted { margin: 0.5rem 0 0; font-size: 0.85rem; }