/* pixel.ceo · Biblioteca — tokens y piezas compartidas.
   Paleta y tipografías de site-v2/src/styles.css; tarjetas en el estilo
   «dossier» de floors-f0/d.html: letra pequeña, filetes finos, radios de 2–4 px. */

/* ============ tokens ============ */
:root {
  --bg: #F6F5F0; --bg-2: #ECEAF3; --paper: #FFFFFF;
  --ink: #1E1B3A; --ink-2: #38375B; --muted: #5C5880; --label: #676389; --faint: #A29CC7;
  --rule: rgba(30, 27, 58, 0.10); --rule-2: rgba(30, 27, 58, 0.18);
  --card: rgba(251, 250, 255, 0.90); --card-solid: #FBFAFF; --well: rgba(30, 27, 58, 0.035); --hover: rgba(30, 27, 58, 0.045);
  --accent: #6A3DF0; --accent-2: #8B6CFF; --accent-fg: #5530D6; --accent-soft: rgba(106, 61, 240, 0.09); --accent-line: rgba(106, 61, 240, 0.36);
  --ok: #137A55; --ok-dot: #1FA877; --memo: #7A5700; --memo-dot: #E0A800; --memo-soft: rgba(255, 200, 61, 0.18); --danger: #B33A31; --danger-soft: rgba(227, 90, 80, 0.10);
  --shadow: 0 1px 2px rgba(30, 27, 58, 0.06), 0 18px 40px -24px rgba(30, 27, 58, 0.35);
  --grid: rgba(106, 61, 240, 0.05); --glow: rgba(139, 108, 255, 0.18);
  --code-bg: #F1F0F8; --code-ink: #2B2848;
  --focus: #6A3DF0;
  --sans: "Inter", system-ui, sans-serif; --display: "Space Grotesk", "Inter", sans-serif; --mono: "JetBrains Mono", ui-monospace, monospace;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1); --t-ui: 180ms;
  --gutter: 16px; --wrap: 1180px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0F0E1A; --bg-2: #15132A; --paper: #15142A;
    --ink: #EDEBFF; --ink-2: #BCBFE2; --muted: #A5A1C9; --label: #9D99C2; --faint: #5F628C;
    --rule: rgba(214, 208, 255, 0.10); --rule-2: rgba(214, 208, 255, 0.18);
    --card: rgba(19, 18, 38, 0.88); --card-solid: #15142A; --well: rgba(214, 208, 255, 0.04); --hover: rgba(214, 208, 255, 0.05);
    --accent: #7F55EA; --accent-2: #8B6CFF; --accent-fg: #C4B5FF; --accent-soft: rgba(127, 85, 234, 0.16); --accent-line: rgba(127, 85, 234, 0.5);
    --ok: #34D39A; --ok-dot: #34D39A; --memo: #FFC83D; --memo-dot: #FFC83D; --memo-soft: rgba(255, 200, 61, 0.12); --danger: #FF8A80; --danger-soft: rgba(255, 138, 128, 0.12);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 18px 44px -22px rgba(0, 0, 0, 0.7);
    --grid: rgba(139, 108, 255, 0.05); --glow: rgba(106, 61, 240, 0.22);
    --code-bg: #0B0A16; --code-ink: #DAD6F5;
    --focus: #34D39A;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0F0E1A; --bg-2: #15132A; --paper: #15142A;
  --ink: #EDEBFF; --ink-2: #BCBFE2; --muted: #A5A1C9; --label: #9D99C2; --faint: #5F628C;
  --rule: rgba(214, 208, 255, 0.10); --rule-2: rgba(214, 208, 255, 0.18);
  --card: rgba(19, 18, 38, 0.88); --card-solid: #15142A; --well: rgba(214, 208, 255, 0.04); --hover: rgba(214, 208, 255, 0.05);
  --accent: #7F55EA; --accent-2: #8B6CFF; --accent-fg: #C4B5FF; --accent-soft: rgba(127, 85, 234, 0.16); --accent-line: rgba(127, 85, 234, 0.5);
  --ok: #34D39A; --ok-dot: #34D39A; --memo: #FFC83D; --memo-dot: #FFC83D; --memo-soft: rgba(255, 200, 61, 0.12); --danger: #FF8A80; --danger-soft: rgba(255, 138, 128, 0.12);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 18px 44px -22px rgba(0, 0, 0, 0.7);
  --grid: rgba(139, 108, 255, 0.05); --glow: rgba(106, 61, 240, 0.22);
  --code-bg: #0B0A16; --code-ink: #DAD6F5;
  --focus: #34D39A;
  color-scheme: dark;
}

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

body {
  margin: 0; min-height: 100vh; overflow-x: clip; background: var(--bg); color: var(--ink);
  font: 400 13px/1.55 var(--sans); font-feature-settings: "tnum" 1, "cv11" 1; -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(640px 420px at 12% -8%, var(--glow), transparent 70%),
    radial-gradient(640px 420px at 88% -8%, var(--glow), transparent 70%),
    repeating-linear-gradient(0deg, var(--grid) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, var(--grid) 0 1px, transparent 1px 24px);
}
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 500; letter-spacing: -0.01em; text-wrap: balance; }
h1 { font: 500 26px/1.15 var(--display); letter-spacing: -0.02em; }
h2 { font: 500 17px/1.25 var(--sans); }
h3 { font: 500 14px/1.3 var(--sans); }
p { margin: 0; text-wrap: pretty; }
code, kbd, pre, .mono { font-family: var(--mono); font-feature-settings: normal; font-variant-ligatures: none; }
code { font-size: 11.5px; }
img, svg, canvas { display: block; }
canvas.px { image-rendering: pixelated; image-rendering: crisp-edges; }
main.wrap, main .wrap { width: min(var(--wrap), 100% - 2 * var(--gutter)); margin-inline: auto; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.skip { position: fixed; left: 50%; top: 8px; z-index: 300; transform: translate(-50%, -180%); background: var(--ink); color: var(--bg); padding: 8px 12px; border-radius: 3px; text-decoration: none; font-weight: 500; }
.skip:focus { transform: translate(-50%, 0); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
main .lbl { font: 500 10px/1.2 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--label); }
.muted { color: var(--muted); }

/* ============ piezas ============ */
.card { background: var(--card); border: 1px solid var(--rule-2); border-radius: 4px; box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(12px) saturate(115%); backdrop-filter: blur(12px) saturate(115%); }
.sec { padding: 12px 16px; border-top: 1px solid var(--rule); }
.sec:first-child { border-top: 0; }
.sec__h { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 7px; }
.sec__h .meta { font: 400 10.5px/1 var(--mono); color: var(--label); white-space: nowrap; }

.btn {
  height: 28px; padding: 0 10px; border-radius: 3px; border: 1px solid var(--rule-2); background: transparent; color: var(--ink);
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; font: 500 12px/1 var(--sans); cursor: pointer; white-space: nowrap; text-decoration: none;
  transition: background-color 140ms ease, border-color 140ms ease, transform 120ms var(--ease-out);
}
.btn:hover { background: var(--hover); border-color: var(--faint); }
.btn:active { transform: scale(0.98); }
.btn svg { width: 13px; height: 13px; flex: none; }
.btn--solid { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.btn--solid:hover { background: var(--ink-2); border-color: var(--ink-2); }
.btn--accent { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--accent:hover { background: var(--accent-2); border-color: var(--accent-2); }
.btn--quiet { color: var(--muted); border-color: transparent; }
.btn--sm { height: 24px; padding: 0 8px; font-size: 11px; }

.chip { display: inline-flex; align-items: center; gap: 5px; height: 20px; padding: 0 7px; border-radius: 2px; border: 1px solid var(--rule-2);
  font: 500 10px/1 var(--sans); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-2); white-space: nowrap; background: transparent; }
.chip i { width: 6px; height: 6px; border-radius: 50%; background: var(--ok-dot); }
.chip--soon { color: var(--memo); border-color: color-mix(in srgb, var(--memo-dot) 55%, transparent); background: var(--memo-soft); }
.chip--accent { color: var(--accent-fg); border-color: var(--accent-line); background: var(--accent-soft); }
.chip--danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, transparent); background: var(--danger-soft); }
button.chip { cursor: pointer; height: 26px; padding: 0 10px; font: 500 11.5px/1 var(--sans); letter-spacing: 0; text-transform: none; }
button.chip:hover { background: var(--hover); }
.nw { white-space: nowrap; }
button.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }

kbd { display: inline-flex; align-items: center; min-width: 18px; height: 18px; padding: 0 5px; justify-content: center; border-radius: 3px;
  border: 1px solid var(--rule-2); border-bottom-width: 2px; background: var(--card-solid); font: 500 10.5px/1 var(--mono); color: var(--ink-2); white-space: nowrap; }

/* ============ cabecera ============ */
.top { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 82%, transparent); border-bottom: 1px solid var(--rule);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.top__in { height: 52px; display: flex; align-items: center; gap: 16px; }
.top .brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font: 600 14px/1 var(--sans); letter-spacing: -0.01em; color: var(--ink); flex: none; }
.top .brand svg { width: 22px; height: 22px; image-rendering: pixelated; }
.top .brand small { font: 400 12px/1 var(--sans); color: var(--label); margin-left: 2px; }
.nav { display: flex; gap: 2px; margin-left: 8px; min-width: 0; }
.nav a { padding: 6px 9px; border-radius: 3px; text-decoration: none; color: var(--muted); font-weight: 500; font-size: 12.5px; white-space: nowrap; }
.nav a:hover { background: var(--hover); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); background: var(--well); box-shadow: inset 0 -2px 0 var(--accent); }
.top__end { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.theme-btn { width: 28px; padding: 0; }
@media (max-width: 560px) {
  .brand small { display: none; }
  .nav { margin-left: 0; }
  .nav a { padding: 6px 7px; font-size: 12px; }
  .top__in { gap: 8px; }
  .hide-sm { display: none !important; }
}

/* ============ pie ============ */
.dfoot { margin-top: 56px; border-top: 1px solid var(--rule); padding: 18px 0 28px; color: var(--label); font-size: 11.5px; }
.dfoot .wrap { display: flex; flex-wrap: wrap; gap: 6px 18px; justify-content: space-between; }
.dfoot a { color: var(--muted); }

/* ============ cabecera de página ============ */
.hero { padding: 28px 0 18px; display: grid; gap: 8px; }
.hero p { color: var(--muted); max-width: 62ch; font-size: 13.5px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 11.5px; color: var(--label); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; }

/* selector de propuestas A/B/C */
.variants { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 6px; }
.variants a { display: inline-flex; gap: 6px; align-items: center; height: 26px; padding: 0 9px; border: 1px solid var(--rule-2); border-radius: 3px; text-decoration: none; color: var(--muted); font-size: 11.5px; }
.variants a b { font: 500 10.5px/1 var(--mono); color: var(--label); }
.variants a:hover { background: var(--hover); color: var(--ink); }
.variants a[aria-current="page"] { color: var(--ink); border-color: var(--ink); }
.variants a[aria-current="page"] b { color: var(--accent-fg); }

/* toast */
.toast { position: fixed; left: 50%; bottom: 20px; transform: translate(-50%, 12px); opacity: 0; z-index: 200; padding: 8px 12px; font-size: 12px;
  background: var(--ink); color: var(--bg); border-radius: 3px; pointer-events: none; transition: opacity 160ms ease, transform 200ms var(--ease-out); max-width: calc(100vw - 32px); }
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* bloque de código */
.code { position: relative; margin: 0; padding: 9px 11px; background: var(--code-bg); color: var(--code-ink); border: 1px solid var(--rule); border-radius: 3px;
  font: 400 11.5px/1.55 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; tab-size: 2; }
.code .k { color: var(--accent-fg); } .code .s { color: var(--ok); } .code .n { color: var(--memo); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; scroll-behavior: auto !important; }
}