/* Nothing Superapp — design-system tokens and component classes.
   This file is the source of truth for the system's look. Retune here and see readme.md. */
@import url('https://fonts.googleapis.com/css2?family=Doto:wght@400;700;900&family=Space+Grotesk:wght@300;400;500;700&family=Space+Mono:wght@400;700&display=swap');

:root {
  /* — ground + surfaces — */
  --color-bg:              #000000;
  --color-surface:         #111111;
  --color-surface-raised:  #1A1A1A;
  --color-border:          #222222;           /* decorative dividers */
  --color-border-visible:  #333333;   /* intentional borders */

  /* — text opacity ladder (4 tiers — the whole hierarchy) — */
  --color-text-display:    #FFFFFF;     /* hero numbers, headlines */
  --color-text-primary:    #E8E8E8;     /* body copy */
  --color-text-secondary:  #999999;   /* labels, captions */
  --color-text-disabled:   #666666;    /* disabled, timestamps */

  /* — accent (a signal light, never a decoration) — */
  --color-accent:          #D71921;
  --color-accent-subtle:   color-mix(in srgb, #D71921 15%, transparent);

  /* — status (encode data values, not chrome) — */
  --color-success: #4A9E5C;
  --color-warning: #D4A843;

  /* — tonal ramps (primitive tier, OKLCH-derived — regen via scripts/generate-ramps.mjs) — */
  --color-neutral-100: #faf3f2;
  --color-neutral-200: #eae3e1;
  --color-neutral-300: #d3cccb;
  --color-neutral-400: #b3acab;
  --color-neutral-500: #97908f;
  --color-neutral-600: #76706f;
  --color-neutral-700: #575150;
  --color-neutral-800: #373130;
  --color-neutral-900: #1a1514;

  --color-accent-100: #ffb3a3;
  --color-accent-200: #ffa293;
  --color-accent-300: #ff8a7d;
  --color-accent-400: #ff685e;
  --color-accent-500: #fb4742;
  --color-accent-600: #d3111d;
  --color-accent-700: #ab0000;
  --color-accent-800: #800000;
  --color-accent-900: #550000;


  /* — type: 3-family stack (display / body / label) — */
  --font-display:          "Doto", "Space Mono", "SF Mono", monospace;
  --font-display-weight:   700;
  --font-body:             "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body-weight:      400;
  --font-label:            "Space Mono", "SF Mono", Menlo, monospace;

  /* — type scale (fixed; density does NOT scale type) — */
  --text-display-xl:  72px;   /* --lh 1.0  --tracking -0.03em  — hero numbers, time */
  --text-display-lg:  48px;   /* --lh 1.05 --tracking -0.02em  — section heroes */
  --text-display-md:  36px;   /* --lh 1.1  --tracking -0.02em  — page titles */
  --text-heading:     24px;   /* --lh 1.2  --tracking -0.01em  — section headings */
  --text-subheading:  18px;   /* --lh 1.3  --tracking 0        — subsections */
  --text-body:        16px;   /* --lh 1.5  --tracking 0        — body */
  --text-body-sm:     14px;   /* --lh 1.5  --tracking 0.01em   — secondary body */
  --text-caption:     12px;   /* --lh 1.4  --tracking 0.04em   — timestamps */
  --text-label:       11px;   /* --lh 1.2  --tracking 0.08em UPPER — instrument labels */

  /* — spacing (density 1× × 8px baseline; skips 5 + 7 by design) — */
  --space-1: 3.20px;
  --space-2: 6.40px;
  --space-3: 9.60px;
  --space-4: 12.80px;
  --space-6: 19.20px;
  --space-8: 25.60px;
  --space-12: calc(var(--space-8) * 1.5);
  --space-16: calc(var(--space-8) * 2);

  /* — geometry — */
  --radius-card:    14px;      /* cards, tiles, inputs */
  --radius-compact: calc(14px * 0.5);   /* small chips, tags */
  --radius-button:  999px;      /* pill (999px) or technical (4-8px) */

  /* — motion — */
  --ease-out: cubic-bezier(0.2, 0.7, 0.3, 1);
  --dur-fast:   120ms;
  --dur-medium: 220ms;
}

body {
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
}

/* — image treatment (none) — */
/* No image treatment class — photographs render as-is. */

/* ══════════════════════════════════════════════════════════════════════════
   Base layer — plain elements. No frameworks. No build step.
   ══════════════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-size: var(--text-body); line-height: 1.5; font-weight: var(--font-body-weight); -webkit-font-smoothing: antialiased; }

/* Headings default to body font (Space Grotesk). Use .display-* utilities for hero moments. */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-body); font-weight: 400; margin: 0; }
h1 { font-size: var(--text-display-md); line-height: 1.1;  letter-spacing: -0.02em; }
h2 { font-size: var(--text-heading);    line-height: 1.2;  letter-spacing: -0.01em; }
h3 { font-size: var(--text-subheading); line-height: 1.3; }
h4 { font-size: var(--text-body);       line-height: 1.5; font-weight: 500; }
p  { margin: 0; }
a  { color: var(--color-text-primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--color-text-display); }
img { display: block; max-width: 100%; }
figure { margin: 0; }
::selection { background: var(--color-accent-subtle); color: var(--color-text-display); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

/* — display type utilities (Doto / display face — 36px+ only) — */
.display-xl { font-family: var(--font-display); font-weight: var(--font-display-weight); font-size: var(--text-display-xl); line-height: 1.0;  letter-spacing: -0.03em; color: var(--color-text-display); }
.display-lg { font-family: var(--font-display); font-weight: var(--font-display-weight); font-size: var(--text-display-lg); line-height: 1.05; letter-spacing: -0.02em; color: var(--color-text-display); }
.display-md { font-family: var(--font-display); font-weight: var(--font-display-weight); font-size: var(--text-display-md); line-height: 1.1;  letter-spacing: -0.02em; color: var(--color-text-display); }

/* — label type (Space Mono ALL CAPS — the "instrument panel" tone) — */
.label { font-family: var(--font-label); font-size: var(--text-label); line-height: 1.2; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-secondary); }
.label-strong { color: var(--color-text-primary); }
.caption { font-family: var(--font-body); font-size: var(--text-caption); line-height: 1.4; letter-spacing: 0.04em; color: var(--color-text-secondary); }

/* — data/number type (Space Mono, monospaced numerals) — */
.data { font-family: var(--font-label); font-variant-numeric: tabular-nums; }

/* — opacity utilities (the whole hierarchy in one place) — */
.text-display   { color: var(--color-text-display); }
.text-primary   { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-disabled  { color: var(--color-text-disabled); }
.text-accent    { color: var(--color-accent); }

/* — rules (last resort — prefer whitespace) — */
.hr { height: 1px; border: 0; margin: var(--space-6) 0; background: var(--color-border); }
.hr-visible { background: var(--color-border-visible); }

/* ══════════════════════════════════════════════════════════════════════════
   Component layer — border-first (no default shadows).
   Elevation utilities are opt-in for "card floating on colored ground".
   ══════════════════════════════════════════════════════════════════════ */

/* — buttons (Space Mono, ALL CAPS, min-height 44px — a click, not a chime) — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  cursor: pointer; text-decoration: none; white-space: nowrap;
  font-family: var(--font-label); font-weight: 500;
  font-size: var(--text-body-sm); line-height: 1;
  letter-spacing: 0.06em; text-transform: uppercase;
  min-height: 44px; padding: 12px 24px;
  background: transparent; border: 1px solid transparent;
  border-radius: var(--radius-button);
  color: var(--color-text-primary);
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}
.btn svg { display: block; }
.btn:disabled { color: var(--color-text-disabled); border-color: var(--color-border); cursor: not-allowed; }

.btn-primary { background: var(--color-text-display); color: var(--color-bg); border-color: var(--color-text-display); }
.btn-primary:hover  { background: color-mix(in srgb, var(--color-text-display) 88%, transparent); border-color: transparent; }
.btn-primary:active { background: color-mix(in srgb, var(--color-text-display) 78%, transparent); border-color: transparent; }
.btn-secondary { border-color: var(--color-border-visible); color: var(--color-text-primary); }
.btn-secondary:hover  { border-color: var(--color-text-primary); color: var(--color-text-display); }
.btn-secondary:active { background: var(--color-surface-raised); }
.btn-destructive { color: var(--color-accent); border-color: var(--color-accent); }
.btn-destructive:hover  { background: var(--color-accent-subtle); }
.btn-destructive:active { background: color-mix(in srgb, var(--color-accent) 25%, transparent); }
.btn-ghost { padding-inline: 8px; color: var(--color-text-secondary); }
.btn-ghost:hover  { color: var(--color-text-display); }
.btn-ghost:active { color: var(--color-text-primary); }

.btn-icon { min-width: 44px; padding: 0; width: 44px; height: 44px; }
.btn-block { width: 100%; }

/* Floating action button — a bold red pill (used for the one moment of interruption per screen) */
.fab {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 999px;
  background: var(--color-accent); color: var(--color-text-display);
  border: 0; cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.fab:hover { transform: translateY(-1px); background: color-mix(in srgb, var(--color-accent) 92%, white); }
.fab:active { transform: translateY(0); }

/* — tags (small labels — ALL CAPS Space Mono) — */
.tag {
  display: inline-flex; align-items: center;
  font-family: var(--font-label); font-size: var(--text-label);
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 4px 10px; border-radius: var(--radius-compact);
}
.tag-accent  { background: var(--color-accent); color: var(--color-text-display); }
.tag-subtle  { background: var(--color-accent-subtle); color: var(--color-accent); }
.tag-neutral { background: var(--color-surface-raised); color: var(--color-text-secondary); }
.tag-outline { border: 1px solid var(--color-border-visible); color: var(--color-text-secondary); }

/* — inputs (underline preferred; full-border for form density) — */
.field { display: flex; flex-direction: column; gap: 6px; }
.field > label { font-family: var(--font-label); font-size: var(--text-label); letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-secondary); }
.input {
  width: 100%; min-height: 44px;
  padding: 10px 14px; font: inherit;
  font-family: var(--font-label); font-size: var(--text-body-sm);
  color: var(--color-text-primary); caret-color: var(--color-accent);
  background: transparent;
  border: 0; border-bottom: 1px solid var(--color-border-visible);
  border-radius: 0;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.input::placeholder { color: var(--color-text-disabled); }
.input:hover { border-bottom-color: var(--color-text-secondary); }
.input:focus-visible { border-bottom-color: var(--color-text-primary); outline: none; }
textarea.input { min-height: 96px; resize: vertical; padding-top: 12px; }

/* Boxed input variant */
.input-boxed {
  border: 1px solid var(--color-border-visible);
  border-radius: 8px;
  padding: 10px 14px;
}
.input-boxed:focus-visible { border-color: var(--color-text-primary); outline: none; }

.radio { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-size: var(--text-body-sm); position: relative; }
.radio input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.radio .dot {
  width: 18px; height: 18px; flex: none; border-radius: 999px;
  border: 1.5px solid var(--color-border-visible);
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.radio:hover .dot { border-color: var(--color-text-secondary); }
.radio input:checked + .dot {
  border-color: var(--color-accent); background: var(--color-accent);
  box-shadow: inset 0 0 0 4px var(--color-bg);
}
.radio input:focus-visible + .dot { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.seg {
  display: inline-flex;
  border: 1px solid var(--color-border-visible);
  border-radius: var(--radius-button);
  padding: 3px;
  gap: 2px;
}
.seg-opt {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 16px; font-family: var(--font-label); font-size: var(--text-body-sm);
  letter-spacing: 0.06em; text-transform: uppercase; cursor: pointer;
  border-radius: calc(var(--radius-button) - 3px);
  color: var(--color-text-secondary);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.seg-opt input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.seg-opt:has(input:checked) { background: var(--color-accent); color: var(--color-text-display); }
.seg-opt:not(:has(input:checked)):hover { color: var(--color-text-primary); }
.seg-opt:has(input:focus-visible) { outline: 2px solid var(--color-accent); outline-offset: 2px; }

/* — cards / tiles — the primary layout primitive (border-first, no default shadow) — */
.card {
  display: flex; flex-direction: column; gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}
.card-raised { background: var(--color-surface-raised); border-color: var(--color-border-visible); }
.card-accent { background: var(--color-accent); color: var(--color-text-display); border-color: var(--color-accent); }
.card-accent .card-kicker { color: color-mix(in srgb, var(--color-text-display) 80%, transparent); }
.card-accent .card-meta   { color: color-mix(in srgb, var(--color-text-display) 70%, transparent); }

.card-kicker { font-family: var(--font-label); font-size: var(--text-label); letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-secondary); }
.card-title  { font-family: var(--font-body);  font-size: var(--text-subheading); line-height: 1.3; font-weight: 500; color: var(--color-text-display); margin: 0; }
.card-body   { margin: 0; font-size: var(--text-body-sm); color: var(--color-text-primary); flex: 1; }
.card-meta   { display: flex; align-items: center; gap: 8px; font-family: var(--font-label); font-size: var(--text-caption); letter-spacing: 0.06em; color: var(--color-text-secondary); }

/* Hero card — the one break-the-pattern moment per screen. Big Doto number, tiny label. */
.card-hero {
  display: grid; grid-template-columns: 1fr auto; align-items: end; gap: var(--space-2);
  min-height: 180px;
}
.card-hero .value  { font-family: var(--font-display); font-weight: var(--font-display-weight); font-size: var(--text-display-xl); line-height: 1; letter-spacing: -0.03em; color: var(--color-text-display); }
.card-hero .unit   { font-family: var(--font-label); font-size: var(--text-label); letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-secondary); align-self: end; }

/* Optional elevation (opt-in for "card floating on a colored ground" — the reference-image case) */
.elev-sm { box-shadow: 0 2px 8px  color-mix(in srgb, #000 20%, transparent); }
.elev-md { box-shadow: 0 8px 24px color-mix(in srgb, #000 28%, transparent); }
.elev-lg { box-shadow: 0 16px 48px color-mix(in srgb, #000 36%, transparent); }

/* — navigation (bracketed / piped — the "instrument panel" tone) — */
.nav {
  display: flex; align-items: center; gap: var(--space-6);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.nav-brand { font-family: var(--font-display); font-weight: var(--font-display-weight); font-size: var(--text-heading); letter-spacing: -0.02em; margin-right: auto; color: var(--color-text-display); }
.nav a {
  font-family: var(--font-label); font-size: var(--text-label);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-disabled); text-decoration: none;
  padding: 4px 0;
  transition: color var(--dur-fast) var(--ease-out);
}
.nav a:hover { color: var(--color-text-primary); }
.nav a[aria-current='page'] { color: var(--color-text-display); }

/* — tables (Space Mono numerics, no zebra) — */
.table { width: 100%; border-collapse: collapse; font-size: var(--text-body-sm); }
.table th {
  text-align: left; font-family: var(--font-label);
  font-size: var(--text-label); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-secondary); font-weight: 400;
  padding: 12px 16px; border-bottom: 1px solid var(--color-border-visible);
}
.table td { padding: 14px 16px; border-bottom: 1px solid var(--color-border); color: var(--color-text-primary); }
.table td.num { font-family: var(--font-label); font-variant-numeric: tabular-nums; text-align: right; color: var(--color-text-display); }
.table tbody tr:hover td { background: var(--color-surface-raised); }
.table tbody tr[aria-selected="true"] td { background: var(--color-surface-raised); box-shadow: inset 2px 0 0 var(--color-accent); }

/* — dialog — */
.dialog-backdrop {
  position: fixed; inset: 0; display: grid; place-items: center;
  padding: var(--space-6);
  background: color-mix(in srgb, #000 60%, transparent);
  backdrop-filter: blur(2px);
}
.dialog {
  width: min(480px, 100%);
  display: flex; flex-direction: column; gap: var(--space-4);
  padding: var(--space-6);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  border: 1px solid var(--color-border-visible);
}
.dialog-title   { font-family: var(--font-body); font-weight: 500; font-size: var(--text-heading); color: var(--color-text-display); }
.dialog-body    { font-size: var(--text-body); color: var(--color-text-primary); }
.dialog-actions { display: flex; justify-content: flex-end; gap: var(--space-3); margin-top: var(--space-2); }

/* — progress + status inline text — */
.status-line { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-label); font-size: var(--text-label); letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-secondary); }
.status-line::before { content: '['; }
.status-line::after  { content: ']'; }
.status-ok    { color: var(--color-success); }
.status-warn  { color: var(--color-warning); }
.status-error { color: var(--color-accent); }