/* BigBrother: an amber terminal. Every colour lives in these variables. */
:root {
    --bg: #17110a;
    --bg-side: #120d07;
    --surface: #1d150b;
    --border: #4a3920;
    --text: #d8a85a;
    --bright: #f0c070;
    --muted: #9a7640;
    --accent: #f0c070;
    --accent-soft: rgba(240, 192, 112, 0.14);
    --ok: #9bbf7a;
    --bad: #e08a6e;
    --warn: #e6c27a;

    --eye-gold: #f0c070;
    --eye-white: #f1e4c8;
    --eye-iris: #6fb7d9;
    --eye-pupil: #17110a;
    --eye-light: #ffffff;

    --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
    color-scheme: dark;
}

html { font-size: clamp(16px, 0.55vw + 8.5px, 24px); }
* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 0.875rem/1.6 var(--mono);
    text-shadow: 0 0 0.375rem rgba(216, 168, 90, 0.25);
}

/* faint scanlines over everything, never in the way of clicks */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    background: repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0.18) 0, rgba(0, 0, 0, 0.18) 1px, transparent 1px, transparent 3px);
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--bright); }

/* the pixel eye */
.eye {
    display: inline-grid;
    grid-template-columns: repeat(19, var(--cell, 0.375rem));
    grid-auto-rows: var(--cell, 0.375rem);
    filter: drop-shadow(0 0 0.625rem rgba(111, 183, 217, 0.35));
}
.px--g { background: var(--eye-gold); }
.px--w { background: var(--eye-white); }
.px--c { background: var(--eye-iris); }
.px--k { background: var(--eye-pupil); }
.px--h { background: var(--eye-light); }

/* layout: a side menu and the page */
.shell { display: flex; min-height: 100vh; }
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.page { width: 100%; max-width: 112rem; padding: 1.5rem 2rem 2.5rem; flex: 1; }

.side {
    flex: 0 0 15rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 1.375rem 1rem;
    background: var(--bg-side);
    border-right: 1px dashed var(--border);
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.side__brand { display: flex; flex-direction: column; gap: 0.625rem; margin-bottom: 2px; }
.side__name { font-size: 1.5rem; line-height: 1; color: var(--bright); font-weight: 600; letter-spacing: 0.02em; }
.side__tag { margin: 0 0 1.125rem; color: var(--muted); font-size: 0.75rem; }
.side__nav { display: flex; flex-direction: column; gap: 2px; }
.side__section { margin: 1.25rem 0 0.25rem; padding: 0 0.5rem; color: var(--muted); font-size: 0.75rem; }
.side__empty { padding: 0.25rem 0.5rem; color: var(--muted); }
.side__link { display: block; padding: 0.3125rem 0.5rem; color: var(--text); }
.side__link:hover { background: #2a1f10; color: var(--bright); }
.side__link.is-active { background: #2a1f10; color: var(--bright); box-shadow: inset 2px 0 0 var(--accent); }
.side__out { margin: auto 0 0; padding-top: 1rem; }
.side__btn { width: 100%; text-align: left; font: inherit; background: none; border: 0; color: var(--muted); cursor: pointer; text-shadow: inherit; }

.page__head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 0.75rem; }
.page__title { margin: 0; font-size: 1.875rem; line-height: 1.1; color: var(--bright); font-weight: 600; }
.page__sub { margin: 0.25rem 0 0; color: var(--muted); font-size: 0.8125rem; }

.tabs { display: flex; flex-wrap: wrap; gap: 0.25rem; margin: 1.125rem 0 1rem; border-bottom: 1px dashed var(--border); }
.tabs__btn {
    font: inherit; background: none; border: 0; padding: 0.5625rem 0.875rem;
    color: var(--muted); cursor: pointer; text-shadow: inherit;
}
.tabs__btn:hover { color: var(--bright); }
.tabs__btn[aria-selected="true"] { color: var(--bright); box-shadow: inset 0 -2px 0 var(--accent); }
.tabs__btn:focus-visible, .btn:focus-visible, select:focus-visible, input:focus-visible,
.side__link:focus-visible, .changelog__summary:focus-visible, .hoster__sum:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 2px;
}

/* the overview hero */
.hero { display: flex; flex-wrap: wrap; align-items: center; gap: 1.75rem; margin-bottom: 1.625rem; }
.hero__title { margin: 0 0 0.5rem; font-size: 2.75rem; line-height: 1; color: var(--bright); font-weight: 600; letter-spacing: 0.03em; }
.hero__line { margin: 0; color: var(--text); }
.hero__line--dim { color: var(--muted); }
.hero__line--bad { color: var(--bad); }

/* controls */
select, input, .btn {
    font: inherit;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 0.4375rem 0.75rem;
}
select { min-width: 8.75rem; }
input[type="search"] { min-width: 12.5rem; }
.btn { cursor: pointer; }
.btn:hover, select:hover, input:hover { border-color: var(--accent); }
.btn[disabled] { opacity: 0.55; cursor: default; }
.btn[disabled]:hover { border-color: var(--border); }
.btn--primary { color: var(--bg); background: var(--accent); border-color: var(--accent); font-weight: 600; text-shadow: none; }
.btn--primary:hover { filter: brightness(1.1); }
.btn--primary[disabled] { color: var(--bg); }
.picker { display: flex; align-items: center; gap: 0.5rem; color: var(--muted); font-size: 0.8125rem; }

.status { color: var(--muted); margin: 0 0 1rem; }
.status[data-kind="error"] { color: var(--bad); }
.status:empty { display: none; }

/* cards */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1rem; }
.stat, .card { background: var(--surface); border: 1px solid var(--border); border-radius: 2px; }
.stat { padding: 1rem 1.125rem; display: flex; flex-direction: column; gap: 2px; }
.stat__label { color: var(--muted); font-size: 0.8125rem; }
.stat__value { font-size: 2rem; font-weight: 600; color: var(--bright); font-variant-numeric: tabular-nums; }
.stat__value--small { font-size: 1.25rem; padding: 0.4375rem 0 0.375rem; }
.stat__hint { color: var(--muted); font-size: 0.75rem; min-height: 1.125rem; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.card { padding: 1.125rem; min-width: 0; }
.card--wide { grid-column: 1 / -1; }
.card__title { margin: 0; font-size: 0.9375rem; font-weight: 600; color: var(--bright); }
.card__sub { margin: 2px 0 0.875rem; color: var(--muted); font-size: 0.8125rem; }
.card__head { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.5rem 1rem; flex-wrap: wrap; }

/* charts */
.chart svg { width: 100%; height: auto; display: block; }
.chart .grid-line { stroke: var(--border); stroke-width: 1; stroke-dasharray: 3 5; }
.chart .axis-text { fill: var(--muted); font-size: 11px; font-family: var(--mono); }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }
.chart .area { fill: var(--accent-soft); }
.chart .dot { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }
.chart .dot--bad { fill: var(--surface); stroke: var(--bad); stroke-width: 2; }
.chart-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 0.5rem; }
.chart__title { margin: 0 0 0.25rem; font-size: 0.8125rem; font-weight: 500; color: var(--muted); }
.chart-pair .axis-text { font-size: 12px; }

/* "…и ещё N" buttons that expand a trimmed list */
.more { font: inherit; background: none; border: 0; padding: 0; color: var(--muted); cursor: pointer; text-shadow: inherit; text-decoration: underline dotted; text-underline-offset: 0.25em; }
.more:hover { color: var(--bright); }
.more:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* chart tooltips */
.chart .hit { fill: transparent; cursor: crosshair; }
.chart .dot.is-hover { stroke: var(--bright); stroke-width: 3; filter: drop-shadow(0 0 4px var(--accent)); }
.tip {
    position: fixed; z-index: 200; pointer-events: none;
    max-width: 22rem; padding: 0.5rem 0.75rem;
    background: var(--bg-side); border: 1px solid var(--accent); border-radius: 2px;
    font-size: 0.8125rem; line-height: 1.5; color: var(--text);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
}
.tip__head { color: var(--bright); font-weight: 600; margin-bottom: 0.125rem; }
.tip__row { white-space: nowrap; }

/* bars */
.bars { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.bars__row { display: grid; grid-template-columns: 5.625rem 1fr 3rem; align-items: center; gap: 0.625rem; }
#transports .bars__row { grid-template-columns: 9.375rem 1fr 3rem; }
.bars__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bars__track { height: 0.625rem; background: var(--accent-soft); border-radius: 0; overflow: hidden; }
.bars__fill { height: 100%; background: var(--accent); }
.bars__count { text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.empty { color: var(--muted); font-size: 0.875rem; }

/* hosters: rows that expand into their hosts */
.hosters { display: flex; flex-direction: column; }
.hoster { border-top: 1px solid var(--border); }
.hoster__sum {
    display: grid; grid-template-columns: 1.125rem minmax(7.5rem, 15rem) 1fr 3.5rem;
    align-items: center; gap: 0.625rem; padding: 0.5625rem 0; cursor: pointer; list-style: none;
}
.hoster__sum::-webkit-details-marker { display: none; }
.hoster__sum::before { content: "▸"; color: var(--muted); }
.hoster[open] > .hoster__sum::before { content: "▾"; }
.hoster__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hoster__sum:hover .hoster__name { color: var(--bright); }
.hoster__hosts { list-style: none; margin: 0; padding: 0 0 0.75rem 1.75rem; display: grid; gap: 0.25rem; }
.hoster__host { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 1rem; font-size: 0.8125rem; }

/* changes */
.changes__cols { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.changes__head { margin: 0 0 0.625rem; font-size: 0.875rem; font-weight: 600; }
.changes__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.375rem; }
.changes__item { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.25rem 0.75rem; font-size: 0.8125rem; padding: 0.375rem 0; border-top: 1px solid var(--border); }
.changes__host { overflow-wrap: anywhere; }
.changes__detail { color: var(--muted); }
.changes__more { color: var(--muted); font-size: 0.8125rem; padding-top: 0.375rem; }

.changelog__day { margin-top: 1.125rem; }
.changelog__day:first-child { margin-top: 0; }
.changelog__dayhead { margin: 0 0 0.375rem; font-size: 0.8125rem; font-weight: 600; color: var(--muted); text-transform: capitalize; }
.changelog__event { border-top: 1px solid var(--border); padding: 0.5rem 0; }
.changelog__summary { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; font-size: 0.875rem; list-style: none; }
.changelog__summary::-webkit-details-marker { display: none; }
.changelog__summary::before { content: "▸"; color: var(--muted); }
.changelog__event[open] > .changelog__summary::before { content: "▾"; }
.changelog__time { font-variant-numeric: tabular-nums; }
.changelog__marks { display: flex; gap: 0.375rem; margin-left: auto; }
.changelog__event .changes__cols { margin-top: 0.75rem; }

/* tables */
.table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.table th { text-align: left; font-weight: 500; color: var(--muted); font-size: 0.75rem; padding: 0 0 0.5rem; }
.table td { padding: 0.5rem 0; border-top: 1px solid var(--border); }
.table th + th, .table td + td { padding-left: 1rem; }
.card__title + .table { margin-top: 0.875rem; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
th.num { text-align: right; }
.table-wrap { overflow-x: auto; }
.table--servers th, .table--servers td, .table--board th, .table--board td { white-space: nowrap; }
.table--servers th + th, .table--servers td + td { padding-left: 1.25rem; }
.table--board td { padding: 0.6875rem 0; }
.table--servers .filters th { padding-top: 0; padding-bottom: 0.75rem; font-weight: 400; }
.filters input, .filters select { width: 100%; min-width: 5.5rem; max-width: 12rem; padding: 0.25rem 0.5rem; font-size: 0.8125rem; }
.filters select { text-overflow: ellipsis; }
.table__link { color: var(--bright); font-weight: 600; }
.table__link:hover { text-decoration: underline; }
.mono { font-family: var(--mono); font-size: 0.8125rem; }
.muted { color: var(--muted); }

.badge { display: inline-block; padding: 0 0.5rem; border-radius: 2px; font-size: 0.75rem; border: 1px solid currentColor; }
.badge--ok { color: var(--ok); }
.badge--bad { color: var(--bad); }

/* statuses and the sparkline on the overview */
.st--ok { color: var(--ok); }
.st--bad { color: var(--bad); }
.st--warn { color: var(--warn); }
.st--dim { color: var(--muted); }
.spark { font-size: 1.25rem; letter-spacing: 0.14em; color: var(--bright); }
.spark--bad { color: var(--bad); }

/* hosters across all competitors (overview) */
.bars--market .bars__row { grid-template-columns: minmax(8.75rem, 16rem) 1fr 3.5rem 7rem; }
.bars__who { color: var(--muted); font-size: 0.8125rem; text-align: right; white-space: nowrap; }

/* hoster concentration */
.conc { margin-top: 1rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }
.conc__tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
.conc__tile { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.conc__value { font-size: 1.25rem; font-weight: 600; color: var(--bright); font-variant-numeric: tabular-nums; }
.conc__label { font-size: 0.75rem; color: var(--muted); overflow-wrap: anywhere; }

.footer { padding: 0 2rem 1.5rem; color: var(--muted); font-size: 0.75rem; }
.footer a { color: inherit; text-decoration: underline; }

/* login */
.login-body { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.login { width: 100%; max-width: 22.5rem; background: var(--surface); border: 1px solid var(--border); padding: 1.75rem 1.5rem 1.5rem; }
.login__title { margin: 0; font-size: 1.375rem; color: var(--bright); font-weight: 600; }
.login__sub { margin: 0.25rem 0 1.25rem; color: var(--muted); font-size: 0.875rem; }
.login__error { margin: 0 0 1rem; padding: 0.5625rem 0.75rem; border: 1px solid var(--bad); color: var(--bad); font-size: 0.875rem; }
.login__form { display: grid; gap: 0.875rem; }
.field { display: grid; gap: 0.375rem; font-size: 0.8125rem; color: var(--muted); }
.field input { font-size: 0.9375rem; background: var(--bg); padding: 0.5625rem 0.75rem; }
.login__form .btn--primary { margin-top: 0.25rem; padding: 0.625rem 0.75rem; }

/* narrow screens: the menu goes on top */
@media (max-width: 860px) {
    .shell { flex-direction: column; }
    .side { position: static; height: auto; flex: none; border-right: 0; border-bottom: 1px dashed var(--border); flex-direction: row; flex-wrap: wrap; align-items: center; gap: 0.25rem 0.75rem; }
    .side__brand { flex-direction: row; align-items: center; }
    .side__tag, .side__section { display: none; }
    .side__nav { flex-direction: row; flex-wrap: wrap; }
    .side__out { margin: 0 0 0 auto; padding: 0; }
    .page { padding: 1.25rem 1rem 2rem; }
    .footer { padding: 0 1rem 1.25rem; }
    .stats, .grid, .chart-pair, .changes__cols { grid-template-columns: 1fr; }
    .conc__tiles { grid-template-columns: 1fr; }
    .hoster__sum { grid-template-columns: 1.125rem 1fr 3.5rem; }
    .hoster__sum .bars__track { display: none; }
}

/* CUSUM alert banner */
.alertbox { margin-top: 1rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 1.25rem; padding: 0.75rem 1.125rem; margin-bottom: 1rem; border: 1px solid var(--border); background: var(--surface); }
.alertbox--bad { border-color: var(--bad); }
.alertbox--warn { border-color: var(--warn); }
.alertbox__text { margin: 0; font-size: 0.875rem; }
.alertbox--bad .alertbox__text { color: var(--bad); }
.alertbox--warn .alertbox__text { color: var(--warn); }

.chart .band { fill: var(--accent-soft); stroke: none; opacity: 0.7; }

/* buttons grouped in a header or an alert box, and a compact button for table rows */
.page__actions, .alertbox__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.btn--small { padding: 0.125rem 0.5rem; font-size: 0.75rem; }

/* survival chart: band edges, the sparse tail, the median */
.chart .band-edge { fill: none; stroke: var(--accent); stroke-width: 1; opacity: 0.55; stroke-linejoin: round; }
.chart .surv--thin .band { opacity: 0.25; }
.chart .surv--thin .band-edge { stroke-dasharray: 2 3; opacity: 0.4; }
.chart .surv--thin .line { stroke-dasharray: 6 4; opacity: 0.85; }
.chart .dot--thin { fill: var(--surface); stroke: var(--accent); }
.chart .thin-mark { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 2 4; }
.chart .median-line { stroke: var(--bright); stroke-width: 1; stroke-dasharray: 4 4; opacity: 0.8; }