/* Shared "signal desk" skin for /errors/ and /status/.
   Homepage tokens (midnight ink + electric indigo + teal) with an
   interrupted-frequency layout — not a centered gradient card. */

:root {
    --sig-bg: #0b0e14;
    --sig-bg-soft: #0f131c;
    --sig-surface: #131824;
    --sig-border: rgba(224, 230, 244, 0.10);
    --sig-border-strong: rgba(224, 230, 244, 0.18);
    --sig-text: #eceff7;
    --sig-text-2: #aeb6c8;
    --sig-text-3: #79839a;
    --sig-accent: #7c8cfc;
    --sig-accent-2: #45d4c3;
    --sig-on-accent: #0b0e14;
    --sig-warn: #e8b86d;
    --sig-danger: #e85d6a;
    --sig-ok: #45d4c3;
    --sig-code-stroke: rgba(124, 140, 252, 0.45);
    --sig-grain: rgba(236, 239, 247, 0.035);
    /* Namespaced: --font-display/--font-sans/--font-mono are the three GLOBAL
       type roles shared.css:9-11 owns, and this sheet used to redefine them on
       :root. The intent is a deliberate signal-desk skin (IBM Plex), not an
       override of the platform roles, so the values are unchanged and only the
       names are scoped to this stylesheet. Verified before renaming: the only
       loaders are /errors/ and /status/, neither of which links shared.css,
       tokens.css or app-shell.css, and every consumer of the three vars in this
       file is this file's own 21 font-family declarations (app-shell.css has no
       var(--font-*) reference at all - its title block reads --type-display).
       /status/domain.html is self-contained and never links this sheet, so it is
       unaffected. */
    --sig-font-display: "IBM Plex Serif", Georgia, "Times New Roman", serif;
    --sig-font-sans: "IBM Plex Sans", system-ui, sans-serif;
    --sig-font-mono: "IBM Plex Mono", ui-monospace, monospace;
    --sig-ease: cubic-bezier(0.2, 0, 0, 1);
    --sig-enter: cubic-bezier(0.05, 0.7, 0.1, 1);
}

html.dark,
html.dark-mode { color-scheme: dark; }

/* Light scheme selector follows the platform convention (shared.css:367,
   tokens.css:249, home.css:107, landing.css:117): `html:not(.dark):not(.dark-mode)`.
   A bare `html:not(.dark)` only understood ONE of the two classes the theming
   layer uses, so the light palette and the dark palette disagreed about what
   "light" means the moment anything set `dark-mode` without `dark`. Every
   consumer of the `html.dark` / `html.dark-mode` pair — including theme.js, which
   writes `dark` to documentElement and `dark-mode` to body — now keys off the
   same predicate. */
html:not(.dark):not(.dark-mode) {
    --sig-bg: #f6f7fb;
    --sig-bg-soft: #eef0f7;
    --sig-surface: #ffffff;
    --sig-border: rgba(15, 23, 42, 0.09);
    --sig-border-strong: rgba(15, 23, 42, 0.18);
    --sig-text: #111624;
    --sig-text-2: #4a5468;
    /* Was #77809a = 3.93:1 on white (below AA 4.5:1 for status labels). */
    --sig-text-3: #5c6578;
    --sig-accent: #4f5ee0;
    --sig-accent-2: #0e9e8e;
    --sig-on-accent: #ffffff;
    --sig-warn: #b45309;
    --sig-danger: #c23a4a;
    /* #0e9e8e measured 3.28:1 against the .signal-rack surface for the 0.68rem
       `.signal-row .state.ok` text — below the 4.5:1 AA floor for small text.
       #0b7a6e on the same surface measures ~5.13:1. */
    --sig-ok: #0b7a6e;
    --sig-code-stroke: rgba(79, 94, 224, 0.28);
    --sig-grain: rgba(15, 23, 42, 0.04);
    color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100%;
}

body.signal-body {
    font-family: var(--sig-font-sans);
    background: var(--sig-bg);
    color: var(--sig-text);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Dot grid + grain */
body.signal-body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        radial-gradient(rgba(124, 140, 252, 0.07) 1px, transparent 1px);
    background-size: 28px 28px;
    opacity: 0.55;
}
html:not(.dark):not(.dark-mode) body.signal-body::before {
    background-image: radial-gradient(rgba(79, 94, 224, 0.08) 1px, transparent 1px);
}
body.signal-body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.18;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.55'/></svg>");
    mix-blend-mode: overlay;
}

.signal-skip {
    position: absolute;
    left: -9999px;
    top: 8px;
    padding: 8px 14px;
    background: var(--sig-accent);
    color: var(--sig-on-accent);
    border-radius: 8px;
    z-index: 40;
    font-size: 0.875rem;
    text-decoration: none;
}
.signal-skip:focus { left: 8px; }

/* Top telemetry ticker */
.signal-ticker {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 0.7rem 1.5rem;
    font-family: var(--sig-font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--sig-text-3);
    border-bottom: 1px solid var(--sig-border);
    background: color-mix(in srgb, var(--sig-bg) 82%, transparent);
    backdrop-filter: blur(12px);
    overflow: hidden;
    white-space: nowrap;
}
.signal-ticker .lamp {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
    background: var(--sig-danger);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--sig-danger) 22%, transparent);
}
.signal-ticker .lamp.warn { background: var(--sig-warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--sig-warn) 22%, transparent); }
.signal-ticker .lamp.ok { background: var(--sig-ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--sig-ok) 22%, transparent); }
.signal-ticker .sep { opacity: 0.35; }

@keyframes sig-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.55; }
}
.signal-ticker .lamp { animation: sig-pulse 2.4s ease-in-out infinite; }

/* Broken frequency line */
.signal-freq {
    position: relative;
    z-index: 2;
    height: 1px;
    margin: 0;
    border: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--sig-accent) 8%,
        var(--sig-accent) 46%,
        transparent 46.6%,
        transparent 53.4%,
        var(--sig-accent-2) 54%,
        var(--sig-accent-2) 92%,
        transparent 100%
    );
    opacity: 0.55;
}
.signal-freq::after {
    content: "";
    position: absolute;
    left: 47%;
    top: -3px;
    width: 6%;
    height: 7px;
    background:
        repeating-linear-gradient(
            90deg,
            var(--sig-danger) 0 2px,
            transparent 2px 5px
        );
    opacity: 0.7;
}

/* Halo behind the numeral */
.signal-halo {
    position: absolute;
    inset: -8% auto auto -12%;
    width: 70vw;
    height: 70vh;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(42% 50% at 30% 40%, color-mix(in srgb, var(--sig-accent) 22%, transparent), transparent 65%),
        radial-gradient(36% 46% at 70% 20%, color-mix(in srgb, var(--sig-accent-2) 12%, transparent), transparent 65%);
    filter: blur(42px);
}

.signal-shell {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 1.5rem 3rem;
    align-items: center;
    min-height: calc(100vh - 3.2rem);
    padding: 2.5rem 6vw 4rem;
    max-width: 1280px;
    margin: 0 auto;
}

.signal-code-wrap {
    position: relative;
    min-height: 42vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    user-select: none;
}
.signal-code {
    font-family: var(--sig-font-mono);
    font-size: clamp(7.5rem, 22vw, 16rem);
    font-weight: 500;
    line-height: 0.78;
    letter-spacing: -0.08em;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--sig-code-stroke);
    transform: translateX(-6%);
    animation: sig-drift 12s ease-in-out infinite;
}
.signal-code.danger { --sig-code-stroke: color-mix(in srgb, var(--sig-danger) 70%, transparent); }
.signal-code.warn { --sig-code-stroke: color-mix(in srgb, var(--sig-warn) 70%, transparent); }

@keyframes sig-drift {
    0%, 100% { transform: translateX(-6%) translateY(0); }
    50% { transform: translateX(-4%) translateY(-8px); }
}

.signal-copy { max-width: 36rem; }

.signal-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: var(--sig-font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--sig-text-3);
    margin-bottom: 1.1rem;
}
.signal-pill .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--sig-danger);
}
.signal-pill.warn .dot { background: var(--sig-warn); }
.signal-pill.ok .dot { background: var(--sig-ok); }

.signal-title {
    font-family: var(--sig-font-display);
    font-weight: 400;
    font-size: clamp(2rem, 4.4vw, 3.35rem);
    letter-spacing: -0.018em;
    line-height: 1.08;
    margin: 0 0 0.9rem;
}
.signal-body-text {
    font-size: 1.05rem;
    line-height: 1.55;
    color: var(--sig-text-2);
    margin: 0 0 1.75rem;
    max-width: 34rem;
}

.signal-ref {
    font-family: var(--sig-font-mono);
    font-size: 0.72rem;
    line-height: 1.45;
    color: var(--sig-text-3);
    background: var(--sig-surface);
    border: 1px solid var(--sig-border);
    border-radius: 10px;
    padding: 0.85rem 1rem;
    word-break: break-all;
    margin: 0 0 1.75rem;
}
.signal-ref[hidden],
.signal-ref.hidden { display: none; }
.signal-ref-label {
    display: block;
    font-size: 0.62rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-bottom: 0.35rem;
    color: var(--sig-text-3);
}

.signal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem 0.85rem;
    align-items: center;
}
.signal-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--sig-font-mono);
    font-size: 0.8125rem;
    letter-spacing: 0.04em;
    text-decoration: none;
    border-radius: 999px;
    padding: 0.7rem 1.15rem;
    border: 1px solid var(--sig-border-strong);
    background: transparent;
    color: var(--sig-text);
    cursor: pointer;
    transition: transform 180ms var(--sig-ease), background 180ms var(--sig-ease), border-color 180ms var(--sig-ease);
}
.signal-btn:hover { transform: translateY(-1px); background: var(--sig-surface); }
.signal-btn:active,
.signal-btn.is-pressing { transform: scale(0.97); }
.signal-btn:focus-visible {
    outline: 2px solid var(--sig-accent);
    outline-offset: 3px;
}
.signal-btn.primary {
    background: var(--sig-accent);
    color: var(--sig-on-accent);
    border-color: transparent;
}
.signal-btn.primary:hover {
    box-shadow: 0 10px 24px -10px color-mix(in srgb, var(--sig-accent) 70%, transparent);
}
.signal-btn .material-symbols-outlined { font-size: 18px; }
.signal-btn[hidden] { display: none; }

.signal-foot {
    margin-top: 2.25rem;
    font-size: 0.75rem;
    color: var(--sig-text-3);
}

/* Status page rack */
.signal-status-shell {
    position: relative;
    z-index: 1;
    max-width: 860px;
    margin: 0 auto;
    padding: 2.75rem 6vw 4.5rem;
}
.signal-status-head { margin-bottom: 2.25rem; }
.signal-meta {
    font-family: var(--sig-font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    color: var(--sig-text-3);
    margin: 0.85rem 0 0;
}

.signal-rack {
    border: 1px solid var(--sig-border);
    border-radius: 14px;
    background: color-mix(in srgb, var(--sig-surface) 78%, transparent);
    overflow: hidden;
}
.signal-row {
    display: grid;
    grid-template-columns: 18px 1fr auto auto;
    gap: 0.85rem;
    align-items: center;
    padding: 0.95rem 1.15rem;
    border-bottom: 1px solid var(--sig-border);
}
.signal-row:last-child { border-bottom: 0; }
.signal-row .lamp {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--sig-text-3);
}
.signal-row .lamp.ok { background: var(--sig-ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--sig-ok) 18%, transparent); }
.signal-row .lamp.warn { background: var(--sig-warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--sig-warn) 18%, transparent); }
.signal-row .lamp.down { background: var(--sig-danger); box-shadow: 0 0 0 3px color-mix(in srgb, var(--sig-danger) 18%, transparent); }
.signal-row .name { font-size: 0.95rem; }
.signal-row .ms {
    font-family: var(--sig-font-mono);
    font-size: 0.75rem;
    color: var(--sig-text-3);
    min-width: 4.5rem;
    text-align: right;
}
.signal-row .state {
    font-family: var(--sig-font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sig-text-3);
    min-width: 7.5rem;
    text-align: right;
}
.signal-row .state.ok { color: var(--sig-ok); }
.signal-row .state.warn { color: var(--sig-warn); }
.signal-row .state.down { color: var(--sig-danger); }

.signal-section {
    font-family: var(--sig-font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--sig-text-3);
    margin: 1.85rem 0 0.7rem;
    font-weight: 500;
}
.signal-section:first-of-type { margin-top: 0; }

.signal-row-link {
    grid-template-columns: 18px 1fr auto;
}
.signal-row a.name {
    color: inherit;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-width: 0;
}
.signal-row a.name:hover { color: var(--sig-accent); }
.signal-row a.name:focus-visible {
    outline: 2px solid var(--sig-accent);
    outline-offset: 3px;
    border-radius: 4px;
}
/* Provider rows stack the vendor link over the incident line, so column 2 is a flex column.
   The sub-line only exists when a provider is not operational — a healthy rack stays one line. */
.signal-row .col {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 0;
}
.signal-row .sub {
    font-size: 0.75rem;
    line-height: 1.3;
    color: var(--sig-text-3);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.signal-row .ext {
    font-size: 16px;
    color: var(--sig-text-3);
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
}

.signal-wordmark {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0 6vw 2rem;
    font-family: var(--sig-font-display);
    font-size: 1.05rem;
    color: var(--sig-text-2);
    text-decoration: none;
}
.signal-wordmark svg { display: block; }

@media (max-width: 820px) {
    .signal-shell {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 1.25rem;
        gap: 0.25rem;
    }
    .signal-code-wrap {
        min-height: 0;
        justify-content: flex-start;
    }
    .signal-code {
        font-size: clamp(5.5rem, 38vw, 9rem);
        transform: none;
        margin: 0.2rem 0 0.4rem;
    }
    .signal-row {
        grid-template-columns: 14px 1fr auto;
        grid-template-rows: auto auto;
    }
    .signal-row .state {
        grid-column: 2;
        text-align: left;
        min-width: 0;
    }
    .signal-row .ms {
        grid-column: 3;
        grid-row: 1 / span 2;
    }
    .signal-row-link {
        grid-template-rows: auto;
    }
    .signal-row-link .state {
        grid-column: 3;
        text-align: right;
    }
}

@media (prefers-reduced-motion: reduce) {
    .signal-ticker .lamp,
    .signal-code { animation: none; }
    .signal-btn:hover { transform: none; }
    .signal-btn:active { transform: none; }
}

/* ---- Status page: incidents / scheduled / system info / changelog / uptime ---- */
.signal-cards {
    display: grid;
    gap: 0.85rem;
    grid-template-columns: 1fr;
    margin-top: 0.25rem;
}
.signal-card {
    border: 1px solid var(--sig-border);
    border-radius: 12px;
    padding: 1.05rem 1.2rem;
    background: color-mix(in srgb, var(--sig-surface) 78%, transparent);
    border-left-width: 3px;
}
.signal-card.info { border-left-color: var(--sig-accent); }
.signal-card.warn { border-left-color: var(--sig-warn); }
.signal-card.danger { border-left-color: var(--sig-danger); }
.signal-card-head {
    display: flex;
    align-items: baseline;
    gap: 0.85rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}
.signal-card-sev {
    font-family: var(--sig-font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
    border: 1px solid var(--sig-border-strong);
    color: var(--sig-text-3);
    flex-shrink: 0;
}
.signal-card-sev.info { color: var(--sig-accent); border-color: color-mix(in srgb, var(--sig-accent) 38%, transparent); }
.signal-card-sev.warn { color: var(--sig-warn); border-color: color-mix(in srgb, var(--sig-warn) 38%, transparent); }
.signal-card-sev.danger { color: var(--sig-danger); border-color: color-mix(in srgb, var(--sig-danger) 38%, transparent); }
.signal-card-title {
    font-family: var(--sig-font-display);
    font-size: 1.15rem;
    font-weight: 500;
    margin: 0;
    color: var(--sig-text);
}
.signal-card-body {
    margin: 0.35rem 0 0.65rem;
    color: var(--sig-text-2);
    line-height: 1.5;
    font-size: 0.95rem;
}
.signal-card-meta {
    margin: 0;
    font-family: var(--sig-font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.04em;
    color: var(--sig-text-3);
}

.signal-meta-grid {
    margin: 0.25rem 0 0;
    padding: 0;
    border: 1px solid var(--sig-border);
    border-radius: 12px;
    background: color-mix(in srgb, var(--sig-surface) 60%, transparent);
    overflow: hidden;
}
.signal-meta-grid .row {
    display: grid;
    grid-template-columns: minmax(7.5rem, 0.4fr) 1fr;
    gap: 1rem;
    padding: 0.7rem 1.15rem;
    border-bottom: 1px solid var(--sig-border);
    align-items: baseline;
}
.signal-meta-grid .row:last-child { border-bottom: 0; }
.signal-meta-grid dt {
    font-family: var(--sig-font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--sig-text-3);
}
.signal-meta-grid dd {
    margin: 0;
    font-family: var(--sig-font-mono);
    font-size: 0.85rem;
    color: var(--sig-text);
    word-break: break-all;
}
.signal-meta-grid dd a { color: var(--sig-accent); text-decoration: none; }
.signal-meta-grid dd a:hover { text-decoration: underline; }

.signal-changelog {
    margin: 0.25rem 0 0;
    padding: 0;
    list-style: none;
    border: 1px solid var(--sig-border);
    border-radius: 12px;
    background: color-mix(in srgb, var(--sig-surface) 60%, transparent);
    overflow: hidden;
}
.signal-changelog-row {
    display: grid;
    grid-template-columns: 6.5rem minmax(0, 1fr) auto;
    gap: 1rem;
    padding: 0.7rem 1.15rem;
    border-bottom: 1px solid var(--sig-border);
    align-items: baseline;
}
.signal-changelog-row:last-child { border-bottom: 0; }
.signal-changelog-date {
    font-family: var(--sig-font-mono);
    font-size: 0.72rem;
    color: var(--sig-text-3);
    letter-spacing: 0.06em;
}
.signal-changelog-summary {
    font-size: 0.92rem;
    color: var(--sig-text);
    min-width: 0;
}
.signal-changelog-ref {
    font-family: var(--sig-font-mono);
    font-size: 0.72rem;
    color: var(--sig-text-3);
}
.signal-changelog-ref a { color: var(--sig-accent); text-decoration: none; }
.signal-changelog-ref a:hover { text-decoration: underline; }

.signal-details {
    margin-top: 0.85rem;
    border: 1px solid var(--sig-border);
    border-radius: 12px;
    background: color-mix(in srgb, var(--sig-surface) 60%, transparent);
    overflow: hidden;
}
.signal-details > summary {
    cursor: pointer;
    list-style: none;
    padding: 0.75rem 1.15rem;
    font-family: var(--sig-font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--sig-text-3);
}
.signal-details > summary::-webkit-details-marker { display: none; }
.signal-details > summary::before {
    content: '+';
    display: inline-block;
    width: 0.9rem;
    color: var(--sig-accent);
}
.signal-details[open] > summary::before { content: '−'; }
.signal-details > summary:hover { color: var(--sig-text); }
.signal-details .signal-rack {
    border: 0;
    border-radius: 0;
    background: transparent;
}
.signal-details[open] > .signal-rack { border-top: 1px solid var(--sig-border); }

.signal-rack-meta .signal-row-meta-text {
    font-family: var(--sig-font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.02em;
    color: var(--sig-text-2);
    text-align: right;
    min-width: 0;
}

.signal-row-meta {
    grid-template-columns: 18px minmax(7rem, 0.32fr) minmax(0, 1fr);
}
@media (max-width: 820px) {
    .signal-row-meta {
        grid-template-columns: 14px 1fr;
        grid-template-rows: auto auto;
    }
    .signal-row-meta .signal-row-meta-text {
        grid-column: 2;
        grid-row: 2;
        text-align: left;
    }
    .signal-meta-grid .row {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
    .signal-changelog-row {
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
    }
    .signal-changelog-date {
        grid-column: 1;
        grid-row: 1;
    }
    .signal-changelog-summary {
        grid-column: 1 / span 2;
        grid-row: 2;
    }
    .signal-changelog-ref {
        grid-column: 2;
        grid-row: 1;
    }
}