/* Load assets/vendor/fonts.css before this stylesheet; see docs/ADOPTION.md. */

/*
 * Homelab design system — SINGLE SOURCE OF TRUTH.
 * Aesthetic: dark, grayscale, minimal, low eye strain (2026-07-22).
 * Color is functional-only (status/chart); the accent is a brighter neutral.
 * Edit design HERE — every app references this one stack. Do not fork per-app;
 * per-app identity is at most one accent token, never a divergent stylesheet.
 *
 * Approved reference surface: money.tannner.com (main, Tanner-approved
 * 2026-09-07 after rejecting a redesign that desaturated a chart). Rules an
 * agent building or touching ANY homelab UI must follow, no exceptions:
 *   - Color is functional ONLY: green = a data series / positive delta,
 *     amber-red = a warning (hidden entirely when it does not apply) —
 *     everything else stays greyscale. Never add hue for decoration.
 *   - Panels separate from the page by a 1px border, NOT a background jump.
 *     Deliberately low page/panel contrast (~1.2:1 on the reference) is the
 *     design, not a bug — do not "improve" it by lightening panels.
 *   - Selection is unmistakable: filled pill + border + brighter text, never
 *     a bare color nudge. Exactly one selected member per group.
 *   - Numbers in mono (--ui-font-mono), labels in sans (--ui-font-sans), so
 *     figures line up in a column.
 *   - One headline number per card (~24px/700), then a delta, then at most
 *     one line of derivation. Not more.
 *   - Prose lines capped near 75ch (GOV.UK two-thirds-line-length rule).
 *   - A tidier UI is not automatically a better one: the rejected redesign
 *     cut distinct text styles 22 -> 10 and was STILL wrong, because it
 *     desaturated the chart. Simplification never overrides a rule above.
 */

:root {
  color-scheme: dark;
  --ui-font-sans: 'Space Grotesk', 'Plus Jakarta Sans', 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
  --ui-font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'SFMono-Regular', ui-monospace, monospace;

  /* neutrals — cool-biased, deliberate; ground near-black (never pure), text off-white */
  --ui-bg: #0e1013;
  --ui-bg-accent: #121519;
  --ui-surface: #16191d;
  --ui-surface-2: #1c2026;
  --ui-surface-3: #242832;
  --ui-border: #2a2f38;
  --ui-text: #dce0e6;
  --ui-muted: #98a0ab;
  /* --ui-muted-2 was #666d78, which is 3.13:1 on --ui-surface-2 and fails
     WCAG AA for the small labels it exists for. axe found 164 contrast
     failures in money alone from this one token (2026-08-17). #8a919c clears
     4.5:1 against the LIGHTEST surface here (--ui-surface-3, 4.64:1) and 5.15:1
     on --ui-surface-2, while staying firmly in the muted band — this is still
     secondary text, just legible secondary text. */
  --ui-muted-2: #8a919c;

  /* accent = a brighter neutral. affordance via weight/underline/border, not hue */
  --ui-accent: #b9c1cc;
  --ui-accent-strong: #d6dce3;
  --ui-accent-soft: #20242b;
  --ui-highlight: #d6dce3;
  --ui-focus: rgba(185, 193, 204, 0.35);

  /* status — the only color; muted + functional, never decorative */
  --ui-success: #7fa891;
  --ui-warning: #c9b487;
  --ui-danger: #cd8a8f;
  --ui-info: #8ea6c4;

  --ui-shadow: 0 24px 50px rgba(0, 0, 0, 0.55), 0 8px 18px rgba(0, 0, 0, 0.35);
  --ui-shadow-soft: 0 12px 26px rgba(0, 0, 0, 0.4), 0 4px 10px rgba(0, 0, 0, 0.28);
  --ui-radius: 12px;
  --ui-border-soft: rgba(42, 47, 56, 0.6);
  --ui-glass: rgba(18, 21, 25, 0.7);
  --ui-glow: 0 0 0 1px rgba(185, 193, 204, 0.10);

  --bg: var(--ui-bg);
  --bg-2: var(--ui-bg-accent);
  --card: var(--ui-surface);
  --surface: var(--ui-surface);
  --surface-2: var(--ui-surface-2);
  --surface-3: var(--ui-surface-3);
  --border: var(--ui-border);
  --text: var(--ui-text);
  --muted: var(--ui-muted);
  --dim: var(--ui-muted-2);
  --accent: var(--ui-accent);
  --accent-strong: var(--ui-accent-strong);
  --accent-soft: var(--ui-accent-soft);
  --accent-warm: var(--ui-highlight);
  --accent-violet: var(--ui-info);
  --ok: var(--ui-success);
  --warn: var(--ui-warning);
  --bad: var(--ui-danger);
  --green: var(--ui-success);
  --yellow: var(--ui-warning);
  --red: var(--ui-danger);
  --blue: var(--ui-info);
  --purple: var(--ui-info);
  --orange: var(--ui-warning);
  --cyan: var(--ui-info);
}

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

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

html {
  /* Always reserve the scrollbar gutter. Without this, a short view (no
     scrollbar) renders content ~15px wider than a tall one, so every
     navigation between views nudged the layout sideways. Reserving the space
     unconditionally keeps width identical on every page. */
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  font-family: var(--ui-font-sans);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  background: linear-gradient(180deg, #121519 0%, #0e1013 60%, #0c0e11 100%);
  color: var(--ui-text);
}

a {
  color: var(--ui-accent-strong);
  text-decoration: none;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--ui-highlight);
  text-decoration: underline;
}

::selection {
  background: rgba(185, 193, 204, 0.28);
  color: var(--ui-text);
}

input,
select,
textarea,
button {
  font-family: inherit;
  color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--ui-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--ui-focus);
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

.ui-card {
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  box-shadow: var(--ui-shadow-soft);
}

.ui-panel {
  background: var(--ui-surface-2);
  border: 1px solid var(--ui-border);
  border-radius: calc(var(--ui-radius) + 2px);
  box-shadow: var(--ui-shadow-soft);
}

.ui-glass {
  background: var(--ui-glass);
  border: 1px solid var(--ui-border-soft);
  backdrop-filter: blur(14px);
  box-shadow: var(--ui-shadow-soft);
}

.ui-pill {
  border-radius: 999px;
}

.ui-chip {
  background: var(--ui-surface-2);
  border: 1px solid var(--ui-border);
  color: var(--ui-muted);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 11px;
  letter-spacing: 0.04em;
}

.ui-muted {
  color: var(--ui-muted);
}

.ui-dim {
  color: var(--ui-muted-2);
}

.ui-mono {
  font-family: var(--ui-font-mono);
}

/*
 * Signal primitives — additive, `ui-signal-*` prefixed to stay clear of
 * existing canon classes (.ui-panel, .ui-pill, .ui-stat, ...) and of the
 * app-local extensions some apps build on top of this file. Encode the
 * reference-surface rules above as reusable classes; every value below is an
 * existing token, no new hardcoded colors.
 */

/* Panel: separated from the page by border only, not a background jump.
   --ui-bg-accent sits only ~1.04:1 from --ui-bg, mirroring the reference's
   deliberately low page/panel contrast. */
.ui-signal-panel {
  background: var(--ui-bg-accent);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
}

/* Stat/metric card: label -> one headline number -> delta -> at most one
   derivation line. Compose the parts below inside a .ui-signal-stat. */
.ui-signal-stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.ui-signal-stat-label {
  font-family: var(--ui-font-sans);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ui-muted);
}

.ui-signal-stat-value {
  font-family: var(--ui-font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--ui-text);
  font-variant-numeric: tabular-nums;
}

.ui-signal-stat-delta {
  font-family: var(--ui-font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--ui-muted);
  font-variant-numeric: tabular-nums;
}

/* Functional color only: a data series / positive delta is green, a warning
   is amber-red and rendered only when it applies (add/remove the class). */
.ui-signal-stat-delta.is-positive {
  color: var(--ui-success);
}

.ui-signal-stat-delta.is-negative {
  color: var(--ui-danger);
}

.ui-signal-stat-derivation {
  font-family: var(--ui-font-sans);
  font-size: 12px;
  font-weight: 400;
  color: var(--ui-muted-2);
  max-width: 75ch;
}

/* Selected pill: filled + bordered + brighter text — never a color nudge.
   Apply is-selected (or aria-selected="true") to exactly one per group. */
.ui-signal-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  background: transparent;
  color: var(--ui-muted);
  font-family: var(--ui-font-sans);
  padding: 2px 10px;
}

.ui-signal-pill.is-selected,
.ui-signal-pill[aria-selected="true"] {
  background: var(--ui-accent-soft);
  border-color: var(--ui-accent-strong);
  color: var(--ui-accent-strong);
  font-weight: 600;
}

/* Numeric cell: forces the mono face + tabular figures so a column of
   numbers aligns, independent of the surrounding (sans) font. */
.ui-signal-num {
  font-family: var(--ui-font-mono);
  font-variant-numeric: tabular-nums;
}

/* Prose container: caps line length near 75 characters (GOV.UK two-thirds
   rule) regardless of the parent's width. */
.ui-signal-prose {
  max-width: 75ch;
  font-family: var(--ui-font-sans);
  line-height: 1.6;
}