/* ===========================================================================
   MainSail Down Detector — design system

   One vocabulary. The app previously ran two: .panel/.metric-grid/.split on the
   dashboard and .card/.grid-2/.kicker everywhere else, so pages did not read as
   the same product. .card and .grid-2 are now aliases of .panel and .split
   rather than a parallel system.

   Dark only, on purpose — this gets read at 2am during an outage.
   Status is never signalled by colour alone; every state carries a glyph or a
   word as well, so it survives both colour blindness and a bad phone screen.
   =========================================================================== */

:root {
    /* surfaces */
    --bg: #0a0b0d;
    --surface: #121419;
    --surface-2: #171a21;
    --surface-3: #1d212a;
    --line: rgba(255, 255, 255, 0.085);
    --line-strong: rgba(255, 255, 255, 0.16);

    /* type */
    --text: #e7e9ec;
    --text-dim: #b3b9c3;
    --muted: #868d98;

    /* brand — sampled from the radar sweep in the logo */
    --brand: #8fe63f;
    --brand-dim: rgba(143, 230, 63, 0.14);

    /* status */
    --up: #4ade80;
    --warn: #fbbf24;
    --down: #f87171;
    --info: #7dd3fc;

    --up-bg: rgba(74, 222, 128, 0.12);
    --warn-bg: rgba(251, 191, 36, 0.12);
    --down-bg: rgba(248, 113, 113, 0.12);

    --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
    --sans: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;

    --radius: 14px;
    --radius-sm: 9px;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--info); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; color: inherit; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }

/* Keyboard users get a visible ring everywhere. */
:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
    border-radius: 4px;
}

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.mono { font-family: var(--mono); font-size: 0.92em; }
.muted, .fine, .panel-foot { color: var(--muted); font-size: 12px; }
.is-dim { opacity: 0.5; }

/* ---------------------------------------------------------------- shell -- */

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 244px 1fr;
}

.rail {
    background: #08090b;
    border-right: 1px solid var(--line);
    padding: 20px 14px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.brand { display: block; padding: 2px 6px 0; }
.brand img { width: 100%; height: auto; }
.brand-sub {
    display: block;
    margin-top: 8px;
    color: var(--muted);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.nav-section { display: flex; flex-direction: column; gap: 2px; }

.nav-kicker {
    color: var(--muted);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    padding: 0 10px 6px;
}

.nav-link {
    display: block;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--text-dim);
    border-left: 2px solid transparent;
}

.nav-link:hover { background: rgba(255, 255, 255, 0.04); color: #fff; text-decoration: none; }

.nav-link.active {
    background: var(--brand-dim);
    border-left-color: var(--brand);
    color: #fff;
    font-weight: 500;
}

.rail-foot { margin-top: auto; display: flex; flex-direction: column; gap: 8px; }
.user-chip { color: var(--muted); font-size: 12px; padding: 0 10px; overflow-wrap: anywhere; }

.stage { min-width: 0; display: flex; flex-direction: column; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 28px;
    border-bottom: 1px solid var(--line);
    background: rgba(10, 11, 13, 0.85);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 20;
}

.topbar .armslist-mark { height: 26px; width: auto; opacity: 0.85; }

.canvas {
    padding: 20px 28px 56px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 1500px;
    width: 100%;
}

.page-title { font-size: 20px; margin: 0; }

/* --------------------------------------------------------------- panels -- */

.panel, .card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px 20px;
    min-width: 0;
}

.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.panel-label, .kicker {
    color: var(--muted);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 500;
    margin: 0 0 8px;
}

.panel-head .panel-label { margin: 0; }
.panel-link { font-size: 12px; }

.metric-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.split, .grid-2 { display: grid; gap: 14px; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); }
/* Full-width panels stacked vertically — for pages with a table too wide to sit
   beside anything. */
.stack { display: grid; gap: 14px; }
.form-narrow { max-width: 460px; }
.field-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.metric {
    font-family: var(--mono);
    font-size: 32px;
    letter-spacing: -0.04em;
    line-height: 1.1;
    font-weight: 500;
}

.metric span, .metric small { font-size: 13px; color: var(--muted); margin-left: 5px; font-family: var(--sans); }
.panel.is-alarm { border-color: rgba(248, 113, 113, 0.4); }
.panel.is-alarm .metric { color: var(--down); }

/* ------------------------------------------------------------ status hero -- */

.status-hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    padding: 20px 22px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--surface);
    position: relative;
    overflow: hidden;
}

.status-hero::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 3px;
    background: var(--muted);
}

.status-hero.is-up::before { background: var(--up); }
.status-hero.is-warn::before { background: var(--warn); }
.status-hero.is-down::before { background: var(--down); }

.status-kicker { color: var(--muted); font-size: 12px; letter-spacing: 0.06em; }

.status-word {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 30px;
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-top: 2px;
}

/* The dot is decorative; the word beside it carries the meaning. */
.status-dot {
    width: 11px; height: 11px;
    border-radius: 50%;
    background: var(--muted);
    flex: none;
}

.status-hero.is-up .status-word { color: var(--up); }
.status-hero.is-up .status-dot { background: var(--up); box-shadow: 0 0 0 4px var(--up-bg); }
.status-hero.is-warn .status-word { color: var(--warn); }
.status-hero.is-warn .status-dot { background: var(--warn); box-shadow: 0 0 0 4px var(--warn-bg); }
.status-hero.is-down .status-word { color: var(--down); }
.status-hero.is-down .status-dot { background: var(--down); box-shadow: 0 0 0 4px var(--down-bg); animation: pulse 1.6s ease-in-out infinite; }

@keyframes pulse { 50% { box-shadow: 0 0 0 9px transparent; } }

.status-sub { margin: 6px 0 0; color: var(--muted); overflow-wrap: anywhere; }

.status-flags { display: flex; gap: 26px; margin: 0; flex-wrap: wrap; }
.status-flags div { min-width: 0; }
.status-flags dt { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; }
.status-flags dd { margin: 2px 0 0; font-size: 14px; font-weight: 500; }

.pill {
    display: inline-block;
    margin-left: 6px;
    padding: 1px 7px;
    border-radius: 99px;
    background: var(--surface-3);
    border: 1px solid var(--line);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
}

/* -------------------------------------------------------------- banners -- */

.banner {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: var(--surface-2);
    font-size: 13px;
}

.banner::before { content: "●"; font-size: 9px; line-height: 1.6; }
.banner-warn { border-color: rgba(251, 191, 36, 0.4); background: var(--warn-bg); color: #f6dfa4; }
.banner-warn::before { content: "▲"; color: var(--warn); }
.banner-danger { border-color: rgba(248, 113, 113, 0.4); background: var(--down-bg); color: #f7c4c4; }
.banner-danger::before { content: "■"; color: var(--down); }
.banner-muted { color: var(--text-dim); }
.banner-muted::before { content: "❚❚"; font-size: 8px; color: var(--muted); }
.banner-note { color: var(--muted); }

.inline-warn {
    margin: 8px 0 0;
    padding: 8px 12px;
    border-left: 2px solid var(--warn);
    background: var(--warn-bg);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 12px;
    color: #f6dfa4;
}

/* --------------------------------------------------------------- charts -- */

.chart { margin: 0; }
.chart-svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart-empty { padding: 40px 0; text-align: center; color: var(--muted); font-size: 13px; }

.grid { stroke: rgba(255, 255, 255, 0.055); stroke-width: 1; }
.axis-line { stroke: var(--line-strong); stroke-width: 1; }
.axis { fill: var(--muted); font-size: 10px; font-family: var(--mono); }

.thr { stroke-width: 1; stroke-dasharray: 3 4; }
.thr-warn { stroke: rgba(251, 191, 36, 0.55); }
.thr-down { stroke: rgba(248, 113, 113, 0.55); }
.thr-label { font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase; }
.thr-warn-t { fill: rgba(251, 191, 36, 0.8); }
.thr-down-t { fill: rgba(248, 113, 113, 0.8); }

.fault-band { fill: rgba(248, 113, 113, 0.16); }

.ser-home { fill: none; stroke: #c3cad4; stroke-width: 1.75; stroke-linejoin: round; stroke-linecap: round; }
.ser-search { fill: none; stroke: var(--brand); stroke-width: 1.75; stroke-linejoin: round; stroke-linecap: round; }
.ser-home-fill { fill: rgba(195, 202, 212, 0.07); stroke: none; }
.ser-search-fill { fill: rgba(143, 230, 63, 0.09); stroke: none; }

.chart-caption {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 10px;
    color: var(--muted);
    font-size: 11px;
}

.ser-key { width: 9px; height: 2px; border-radius: 2px; display: inline-block; }
.ser-key-home { background: #c3cad4; }
.ser-key-search { background: var(--brand); }
.chart-meta { margin-left: auto; font-family: var(--mono); }
.chart-meta-fault { color: var(--down); }

.range-tabs { display: flex; gap: 2px; background: var(--surface-2); border-radius: var(--radius-sm); padding: 2px; }

.range-tab {
    border: 0;
    background: transparent;
    color: var(--muted);
    padding: 5px 11px;
    border-radius: 7px;
    cursor: pointer;
    font-size: 12px;
}

.range-tab:hover { color: var(--text); }
.range-tab.is-active { background: var(--surface-3); color: var(--text); font-weight: 500; }

/* -------------------------------------------------------------- buttons -- */

.btn, .ghost-btn, .primary-btn, .danger-btn, .warn-btn, .login-submit, .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line-strong);
    background: var(--surface-2);
    color: var(--text);
    padding: 8px 14px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.12s ease, border-color 0.12s ease;
    text-decoration: none;
}

.btn:hover, .ghost-btn:hover { background: var(--surface-3); text-decoration: none; }

.btn-solid, .primary-btn, .login-submit, .btn-primary {
    background: var(--brand);
    color: #0a0b0d;
    border-color: transparent;
    font-weight: 600;
}

.btn-solid:hover, .primary-btn:hover, .login-submit:hover, .btn-primary:hover { filter: brightness(1.08); }

.btn-danger, .danger-btn { border-color: rgba(248, 113, 113, 0.45); color: #ffb4b4; background: var(--down-bg); }
.btn-danger:hover, .danger-btn:hover { background: rgba(248, 113, 113, 0.2); }
.btn-warn, .warn-btn { border-color: rgba(251, 191, 36, 0.45); color: #f3d48a; background: var(--warn-bg); }
.btn-warn:hover, .warn-btn:hover { background: rgba(251, 191, 36, 0.2); }
.btn-tiny { padding: 3px 9px; font-size: 11px; }
.btn-lg { padding: 11px 18px; font-size: 14px; }

.btn:disabled, .btn-primary:disabled, button:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-row, .actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; align-items: center; }
.save-bar {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    padding: 14px 0 0;
    position: sticky;
    bottom: 0;
    background: linear-gradient(transparent, var(--bg) 40%);
}

.desk-copy { margin: 0 0 8px; }
.toast { margin: 12px 0 0; color: var(--up); font-size: 12px; }
.toast.is-error { color: var(--down); }

.status-chip {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 3px 9px;
    border-radius: 99px;
    border: 1px solid var(--line);
}

.status-chip.is-on { color: var(--up); border-color: rgba(74, 222, 128, 0.4); background: var(--up-bg); }
.status-chip.is-off { color: var(--muted); }

/* Incident state carries a glyph as well as a colour. */
.state-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

.state-tag::before { font-size: 9px; }
.state-alerting { color: var(--down); }
.state-alerting::before { content: "■"; }
.state-acknowledged { color: var(--warn); }
.state-acknowledged::before { content: "▲"; }
.state-failover { color: var(--info); }
.state-failover::before { content: "◆"; }
.state-closed { color: var(--muted); }
.state-closed::before { content: "●"; }

.test-result { font-size: 12px; }
.test-result.is-ok { color: var(--up); }
.test-result.is-bad { color: var(--down); }
.test-result.is-ok::before { content: "✓ "; }
.test-result.is-bad::before { content: "✕ "; }

/* --------------------------------------------------- ad-hoc domain check -- */

.check-bar { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.check-field { flex: 1 1 320px; margin-bottom: 0; }
.check-bar .btn { flex: none; padding: 9px 18px; }

.slow-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 7px; }

.slow-list li {
    display: grid;
    grid-template-columns: 74px minmax(0, 1fr);
    gap: 10px;
    align-items: baseline;
    font-size: 12px;
}

.slow-ms { text-align: right; color: var(--warn); }
.slow-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 900px) {
    .check-bar .btn { width: 100%; }
}

/* ------------------------------------------------------------ waterfall -- */

.waterfall { display: flex; flex-direction: column; gap: 2px; max-height: 560px; overflow-y: auto; overflow-x: hidden; }

.wf-row {
    display: grid;
    grid-template-columns: 104px minmax(0, 1.1fr) minmax(80px, 1.3fr) 68px;
    gap: 10px;
    align-items: center;
    font-size: 12px;
    color: var(--text);
    width: 100%;
    text-align: left;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 6px 8px;
    cursor: pointer;
}

.wf-row:hover, .wf-row.is-open { background: rgba(255, 255, 255, 0.04); border-color: var(--line); }
.wf-row.is-slow .wf-ms { color: var(--warn); font-weight: 600; }

.wf-kind { color: var(--muted); font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.wf-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wf-track { height: 7px; background: rgba(255, 255, 255, 0.05); border-radius: 99px; position: relative; }
.wf-bar { position: absolute; top: 0; height: 100%; background: #8b929c; border-radius: 99px; }
.wf-row.is-slow .wf-bar { background: var(--warn); }
.wf-ms { font-family: var(--mono); text-align: right; color: var(--muted); }

.wf-detail {
    margin: 2px 8px 8px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    font-size: 13px;
}

.wf-detail p { margin: 0 0 8px; }
.wf-url { overflow-wrap: anywhere; }

/* --------------------------------------------------------------- tables -- */

.table-wrap { overflow-x: auto; margin: 0 -4px; }

/* The roster carries nine columns. Left to shrink freely it crushes the toggle
   buttons into unreadable slivers, so hold a floor and let the wrapper scroll. */
.roster-table { min-width: 900px; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: rgba(255, 255, 255, 0.02); }

.table th {
    color: var(--muted);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    white-space: nowrap;
}

/* ---------------------------------------------------------------- forms -- */

.field { display: block; margin-bottom: 14px; }
.field > span { display: block; color: var(--text-dim); font-size: 12px; margin-bottom: 5px; font-weight: 500; }
.field small { display: block; color: var(--muted); font-size: 11px; margin-top: 5px; line-height: 1.45; }
.field-danger > span { color: #f3d48a; }

.checkbox { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; cursor: pointer; font-size: 13px; }
.checkbox input { width: 15px; height: 15px; accent-color: var(--brand); cursor: pointer; }

.form-control, .form-select, .field input, .field select, .field textarea,
input[type=text], input[type=password], input[type=email], input[type=number], input[type=tel], input[type=url] {
    width: 100%;
    background: #0c0e12;
    border: 1px solid var(--line-strong);
    color: var(--text);
    border-radius: var(--radius-sm);
    padding: 9px 11px;
}

.form-control:focus, .form-select:focus, .field input:focus, input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px var(--brand-dim);
}

input::placeholder { color: #5c636e; }

/* Bootstrap-shaped class names, kept because the scaffolded Identity pages emit
   them. Bootstrap itself is not loaded — these are dark-theme equivalents so
   those pages match the rest of the app instead of rendering unstyled. */
.form-label { display: block; color: var(--text-dim); font-size: 12px; margin-bottom: 5px; }
.form-floating { position: relative; margin-bottom: 12px; }
.form-floating > label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 5px; }
.mb-3 { margin-bottom: 12px; }
.w-100 { width: 100%; }
.row { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.col-md-4, .col-xl-6, .col-md-6, .col-lg-6 { min-width: 0; }
.text-danger, .validation-message { color: var(--down); font-size: 12px; }
.validation-errors { list-style: none; padding: 0; margin: 0 0 12px; }

.alert {
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: var(--surface-2);
    font-size: 13px;
    margin-bottom: 14px;
}

.alert-danger { border-color: rgba(248, 113, 113, 0.4); background: var(--down-bg); color: #f7c4c4; }
.alert-warning { border-color: rgba(251, 191, 36, 0.4); background: var(--warn-bg); color: #f6dfa4; }
.alert-success { border-color: rgba(74, 222, 128, 0.4); background: var(--up-bg); color: #bdf0cf; }

/* Bootstrap glyphicon references in the scaffolded pages, without Bootstrap. */
.glyphicon { display: none; }

/* ---------------------------------------------------------------- login -- */

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(760px 380px at 50% -8%, rgba(143, 230, 63, 0.09), transparent 55%),
        var(--bg);
}

.login-card {
    width: min(430px, 100%);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 30px;
    box-shadow: var(--shadow);
}

.login-brand { margin-bottom: 20px; }
.login-brand img { width: 240px; max-width: 100%; height: auto; }
.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card .lede { color: var(--muted); margin: 0 0 22px; }
.login-submit { width: 100%; padding: 11px; margin-top: 6px; }

/* ------------------------------------------------------------ speedtest -- */

.gauge-wrap { display: grid; place-items: center; padding: 18px 0; }

.gauge {
    width: 184px; height: 184px;
    border-radius: 50%;
    background: conic-gradient(var(--brand), var(--warn), var(--down), var(--brand));
    padding: 11px;
    animation: spin 1s linear infinite;
}

.gauge.idle { animation: none; background: var(--surface-3); }

.gauge-inner {
    width: 100%; height: 100%;
    border-radius: 50%;
    background: var(--surface);
    display: grid; place-items: center; text-align: center;
}

@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
    .gauge { animation: none; }
    .status-hero.is-down .status-dot { animation: none; }
    * { transition: none !important; }
}

/* ----------------------------------------------------------- error bar -- */

#blazor-error-ui {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: #2a1214;
    color: #ffd0d0;
    padding: 12px 16px;
    z-index: 50;
    border-top: 1px solid rgba(248, 113, 113, 0.4);
}

#blazor-error-ui.show, #blazor-error-ui.components-reconnect-show { display: block; }
#blazor-error-ui .reload, #blazor-error-ui .dismiss { color: #fff; text-decoration: underline; cursor: pointer; margin-left: 10px; }

/* ---------------------------------------------------------- responsive -- */

@media (max-width: 1180px) {
    .split, .grid-2 { grid-template-columns: minmax(0, 1fr); }
}

/* Below this the sidebar becomes a top bar. Reading this on a phone during an
   outage is the case that matters most, so it gets real attention rather than
   a single-column fallback. */
@media (max-width: 900px) {
    .app-shell { grid-template-columns: 1fr; }

    .rail {
        height: auto;
        position: static;
        flex-direction: row;
        align-items: center;
        gap: 14px;
        padding: 10px 14px;
        border-right: 0;
        border-bottom: 1px solid var(--line);
        overflow-x: auto;
    }

    .brand { flex: none; padding: 0; }
    .brand img { width: 150px; }
    .brand-sub { display: none; }
    .nav-kicker { display: none; }

    .nav-section { flex-direction: row; gap: 4px; flex: none; }

    .nav-link {
        white-space: nowrap;
        border-left: 0;
        border-bottom: 2px solid transparent;
        border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        padding: 7px 11px;
    }

    .nav-link.active { border-left: 0; border-bottom-color: var(--brand); }

    .rail-foot { margin-top: 0; margin-left: auto; flex-direction: row; align-items: center; flex: none; }
    .rail-foot .nav-link { padding: 7px 10px; }
    .rail-foot form { flex: none; }
    .user-chip { white-space: nowrap; padding: 0 6px; }

    .topbar { padding: 12px 16px; position: static; }
    .canvas { padding: 16px 16px 48px; }
    .status-hero { padding: 16px; }
    .status-word { font-size: 25px; }
    .status-flags { gap: 18px; width: 100%; }
    .metric { font-size: 27px; }
    .panel, .card { padding: 15px 16px; }

    /* The waterfall's four columns cannot survive a phone width, so the timing
       bar moves to its own row beneath the name rather than being squeezed
       to nothing or forcing the page to scroll sideways. */
    .wf-row {
        grid-template-columns: 1fr auto;
        grid-template-areas:
            "name ms"
            "kind kind"
            "track track";
        gap: 4px 10px;
        padding: 8px;
        border-color: var(--line);
        margin-bottom: 2px;
    }

    .wf-name { grid-area: name; white-space: normal; overflow-wrap: anywhere; }
    .wf-kind { grid-area: kind; }
    .wf-track { grid-area: track; }
    .wf-ms { grid-area: ms; }

    .range-tabs { width: 100%; overflow-x: auto; }
    .save-bar { position: static; }
}

@media (max-width: 560px) {
    .metric-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
    .status-flags { gap: 14px; }
    .login-card { padding: 22px; }
}

/* Tables never fit a phone; let them scroll inside their own panel instead of
   breaking the page layout. */
@media (max-width: 760px) {
    .panel > .table, .card > .table { display: block; overflow-x: auto; white-space: nowrap; }
}

/* -------------------------------------------------------- account pages -- */

.account-split { display: grid; gap: 14px; grid-template-columns: 210px minmax(0, 1fr); align-items: start; }
.account-nav { display: flex; flex-direction: column; gap: 2px; padding: 14px 10px; }
.account-nav .nav-kicker { padding-bottom: 8px; }

/* The scaffolded Identity pages emit bare h2/h3 headings with no classes. */
.account-split article h2,
.account-split article h3 { font-size: 15px; margin: 0 0 4px; }
.account-split article h4 { font-size: 13px; color: var(--muted); margin: 0 0 12px; font-weight: 500; }
.account-split article form { max-width: 460px; }
.account-split article hr { border: 0; border-top: 1px solid var(--line); margin: 14px 0; }

@media (max-width: 900px) {
    .account-split { grid-template-columns: minmax(0, 1fr); }
    .account-nav { flex-direction: row; flex-wrap: wrap; }
    .account-nav .nav-kicker { display: none; }
}

/* ------------------------------------------------------------ invites -- */

.invite-panel { border-color: var(--brand); margin-bottom: 14px; }
.invite-link-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.invite-link {
    flex: 1 1 380px;
    font-family: var(--mono);
    font-size: 12px;
    /* Anyone holding this link can set that account's password, so it reads as a secret
       rather than as ordinary body text. */
    background: var(--surface-2) !important;
}

/* -------------------------------------------------------- inline edits -- */

/* A cell that is also the control for editing it. Looks like text until hovered,
   so the table stays readable rather than becoming a wall of input boxes. */
.link-cell {
    background: none;
    border: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    cursor: pointer;
    text-align: left;
    border-bottom: 1px dotted transparent;
}

.link-cell:hover { color: var(--brand); border-bottom-color: var(--brand); }

.cell-input {
    width: 100%;
    min-width: 110px;
    padding: 3px 6px !important;
    font-size: 12px !important;
}

/* ----------------------------------------------------------- fault log -- */

.fault-log { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 10px; }

.fault-log > summary {
    cursor: pointer;
    color: var(--text-dim);
    font-size: 12px;
    list-style: none;
    user-select: none;
}

.fault-log > summary::-webkit-details-marker { display: none; }
.fault-log > summary::before { content: "▸ "; color: var(--muted); }
.fault-log[open] > summary::before { content: "▾ "; }
.fault-log > summary:hover { color: var(--text); }

.fault-table { margin-top: 8px; font-size: 12px; }
.fault-table th, .fault-table td { padding: 6px 8px; vertical-align: top; }
.fault-reason { color: var(--text-dim); overflow-wrap: anywhere; }

.fault-tag {
    display: inline-block;
    padding: 1px 7px;
    border-radius: 999px;
    font-size: 10px;
    letter-spacing: 0.04em;
    white-space: nowrap;
    border: 1px solid var(--line-strong);
}

/* Red counted against uptime; amber did not. The distinction is the whole point of
   separating probe faults from site faults, so it has to survive into the UI. */
.fault-tag.is-site { color: var(--down); border-color: rgba(248, 113, 113, 0.4); }
.fault-tag.is-probe { color: var(--warn); border-color: rgba(243, 212, 138, 0.35); }

/* -------------------------------------------------------- voice preview -- */

.voice-preview {
    width: 100%;
    max-width: 320px;
    height: 34px;
    margin-top: 8px;
    /* The native player is light-on-light in most browsers; this keeps it legible
       on a dark panel without rebuilding the control. */
    filter: invert(0.92) hue-rotate(180deg);
    border-radius: var(--radius-sm);
}

/* ------------------------------------------------------------ phone PIN -- */

.pin-edit { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.pin-edit input { width: 110px; font-family: var(--mono); letter-spacing: 0.2em; }

/* ------------------------------------------------------ severity tiers -- */

.tier-note {
    margin: 16px 0 10px;
    padding: 8px 12px;
    border-left: 2px solid var(--line-strong);
    background: var(--surface-2);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 12px;
    color: var(--text-dim);
}

.tier-note strong { color: var(--text); }
.tier-warn { border-left-color: var(--warn); }
.tier-down { border-left-color: var(--down); }

.alert-toggles { display: flex; gap: 3px; flex-wrap: wrap; }
.alert-toggles .btn-tiny { padding: 2px 7px; font-size: 10px; }