/* Manual de usuario Gym Master — lenguaje "Podium": oro sobre grafito cálido. */
:root {
  --bg: #f5f5f3;
  --card: #ffffff;
  --soft: #efeeea;
  --fg: #17150f;
  --muted: #5f5e57;
  --line: #e4e3dd;
  --accent: #f5b301;
  --accent-strong: #e09600;
  --accent-soft: #fbe6ad;
  --accent-ink: #1a1503;
  --link: #8a5a00;
  --ink: #121110;
  --ok: #15803d;
  --ok-bg: #dcfce7;
  --warn: #92400e;
  --warn-bg: #fef3c7;
  --err: #b91c1c;
  --err-bg: #fee2e2;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display: "Archivo", "Inter", system-ui, sans-serif;
  --mono: "Space Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --radius: 14px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #121110;
  --card: #1c1b18;
  --soft: #26241f;
  --fg: #f5f3ec;
  --muted: #aaa79c;
  --line: #34312b;
  --accent-soft: #3a2f0c;
  --link: #f5b301;
  --ok: #86efac;
  --ok-bg: #12301d;
  --warn: #fcd34d;
  --warn-bg: #3a2c0a;
  --err: #fca5a5;
  --err-bg: #3b1515;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5.5rem; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 2px solid var(--accent-strong); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff; padding: .6rem 1rem; z-index: 100; }
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- Cabecera ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-in { display: flex; align-items: center; gap: .75rem; max-width: 1360px; margin: 0 auto; padding: .7rem 1.25rem; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--fg); margin-right: auto; }
.brand img { width: 30px; height: 30px; }
.brand b { font: 800 1.15rem var(--display); letter-spacing: -.02em; }
.brand b i { font-style: normal; color: var(--link); }
.brand span { font: 400 .7rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); border-left: 1px solid var(--line); padding-left: .6rem; }
.btn {
  display: inline-flex; align-items: center; gap: .5rem; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--fg);
  border-radius: 10px; padding: .5rem .85rem; font: 600 .875rem var(--sans); text-decoration: none;
}
.btn:hover { border-color: var(--accent); color: var(--fg); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--accent-ink); }
.btn kbd { font: 400 .7rem var(--mono); background: var(--soft); border-radius: 4px; padding: .05rem .35rem; color: var(--muted); }
.menu-btn { display: none; }
.hide-sm { display: inline-flex; }

/* ---------- Estructura ---------- */
.shell { display: grid; grid-template-columns: 17rem minmax(0, 1fr) 14rem; gap: 2.5rem; max-width: 1360px; margin: 0 auto; padding: 0 1.25rem; }
.shell.no-toc { grid-template-columns: 17rem minmax(0, 1fr); }
.side, .toc { position: sticky; top: 4.4rem; align-self: start; max-height: calc(100vh - 5rem); overflow: auto; padding: 1.75rem 0; font-size: .9rem; }
.side h2, .toc h2 { font: 400 .7rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 1.4rem 0 .5rem; }
.side h2:first-child { margin-top: 0; }
.side a, .toc a { display: block; padding: .38rem .75rem; border-radius: 8px; color: var(--fg); text-decoration: none; border-left: 2px solid transparent; }
.side a:hover, .toc a:hover { background: var(--soft); }
.side a[aria-current="page"] { background: var(--accent-soft); border-left-color: var(--accent-strong); font-weight: 600; color: var(--fg); }
.toc a { color: var(--muted); padding: .28rem .75rem; }
.toc a.sub { padding-left: 1.5rem; font-size: .85rem; }
.toc a.on { color: var(--fg); border-left-color: var(--accent-strong); font-weight: 600; }
main { padding: 2.5rem 0 4rem; min-width: 0; }

/* ---------- Contenido ---------- */
.eyebrow { font: 400 .72rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0; }
h1, h2, h3 { font-family: var(--display); letter-spacing: -.02em; line-height: 1.2; }
h1 { font-size: clamp(2rem, 4vw, 2.9rem); font-weight: 800; margin: .4rem 0 .75rem; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 46rem; margin: 0 0 1.5rem; }
h2 { font-size: 1.65rem; font-weight: 800; margin: 3rem 0 .75rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
h2:first-of-type { border-top: 0; padding-top: 0; }
h3 { font-size: 1.15rem; font-weight: 700; margin: 2rem 0 .5rem; }
h2 .anchor, h3 .anchor { margin-left: .4rem; color: var(--muted); text-decoration: none; font-weight: 400; opacity: 0; }
h2:hover .anchor, h3:hover .anchor, .anchor:focus { opacity: 1; }
p, li { max-width: 46rem; }
ul, ol { padding-left: 1.3rem; }
li { margin: .3rem 0; }
code, kbd { font: .86em var(--mono); background: var(--soft); padding: .12em .4em; border-radius: 5px; }
kbd { border: 1px solid var(--line); border-bottom-width: 2px; }
strong { font-weight: 650; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }

.glance { background: var(--ink); color: #f5f3ec; border-radius: 18px; padding: 1.4rem 1.6rem; margin: 1.75rem 0 .5rem; position: relative; overflow: hidden; }
.glance::after { content: ""; position: absolute; right: -4rem; top: -5rem; width: 14rem; height: 14rem; border-radius: 50%; background: rgba(245, 179, 1, .16); filter: blur(40px); }
.glance .eyebrow { color: rgba(245, 243, 236, .55); position: relative; }
.glance ul { margin: .6rem 0 0; position: relative; }
.glance li { max-width: none; }
.glance li::marker { color: var(--accent); }
.glance a { color: var(--accent); }

ol.steps { list-style: none; counter-reset: s; padding: 0; margin: 1rem 0; }
ol.steps > li { counter-increment: s; position: relative; padding: .15rem 0 .15rem 3rem; margin: .9rem 0; }
ol.steps > li::before {
  content: counter(s, decimal-leading-zero);
  position: absolute; left: 0; top: 0; width: 2.2rem; height: 2.2rem; display: grid; place-items: center;
  background: var(--accent); color: var(--accent-ink); border-radius: 10px; font: 700 .8rem var(--mono);
}

.callout { border: 1px solid var(--line); border-left-width: 4px; border-radius: 10px; background: var(--card); padding: .85rem 1.1rem; margin: 1.25rem 0; max-width: 46rem; }
.callout > b:first-child { display: block; font: 400 .7rem var(--mono); letter-spacing: .14em; text-transform: uppercase; margin-bottom: .2rem; }
.callout p { margin: .3rem 0; }
.callout.tip { border-left-color: var(--ok); } .callout.tip > b:first-child { color: var(--ok); }
.callout.note { border-left-color: var(--accent-strong); } .callout.note > b:first-child { color: var(--link); }
.callout.warn { border-left-color: var(--err); } .callout.warn > b:first-child { color: var(--err); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr)); gap: 1rem; margin: 1.25rem 0; }
.card { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; text-decoration: none; color: var(--fg); transition: border-color .15s, transform .15s; }
a.card:hover { border-color: var(--accent); transform: translateY(-2px); color: var(--fg); }
.card h3 { margin: .35rem 0 .35rem; font-size: 1.1rem; }
.card p { margin: 0 0 .6rem; color: var(--muted); font-size: .92rem; }
.card ul { margin: 0 0 .8rem; padding-left: 1.1rem; font-size: .9rem; color: var(--muted); }
.card .go { margin-top: auto; font: 600 .875rem var(--sans); color: var(--link); }
.card .ico { width: 2.5rem; height: 2.5rem; border-radius: 10px; background: var(--accent-soft); display: grid; place-items: center; font: 700 .85rem var(--mono); color: var(--accent-ink); }
:root[data-theme="dark"] .card .ico { color: var(--accent); }

.table-wrap { overflow-x: auto; margin: 1.25rem 0; border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
th, td { padding: .65rem .9rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 400 .7rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); background: var(--soft); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.c, th.c { text-align: center; }
.yes { color: var(--ok); font-weight: 700; } .no { color: var(--muted); opacity: .5; }

.chip { display: inline-block; font: 600 .75rem var(--sans); padding: .15rem .6rem; border-radius: 999px; background: var(--soft); color: var(--fg); }
.chip.ok { background: var(--ok-bg); color: var(--ok); } .chip.warn { background: var(--warn-bg); color: var(--warn); } .chip.err { background: var(--err-bg); color: var(--err); }

/* Ilustraciones de pantalla (maquetas simples, no capturas) */
figure.mock { margin: 1.5rem 0; max-width: 46rem; }
.mock-win { background: var(--card); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 10px 30px rgba(0, 0, 0, .08); overflow: hidden; }
.mock-bar { display: flex; gap: .35rem; padding: .6rem .8rem; background: var(--soft); border-bottom: 1px solid var(--line); }
.mock-bar i { width: .6rem; height: .6rem; border-radius: 50%; background: var(--line); }
.mock-body { padding: 1rem 1.1rem; font-size: .88rem; }
.mock-dark { background: var(--ink); color: #f5f3ec; border-radius: 12px; padding: 1rem 1.1rem; display: grid; grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr)); gap: 1rem; }
.mock-dark small { display: block; font: 400 .62rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: rgba(245, 243, 236, .55); }
.mock-dark b { font: 700 1.2rem var(--mono); }
.mock-dark b.g { color: var(--accent); }
.mock-row { display: flex; align-items: center; gap: .75rem; padding: .6rem 0; border-top: 1px solid var(--line); }
.mock-row:first-child { border-top: 0; }
.mock-row .grow { flex: 1; min-width: 0; }
.mock-row small { color: var(--muted); display: block; }
.mock-btn { background: var(--accent); color: var(--accent-ink); font-weight: 700; border-radius: 8px; padding: .3rem .7rem; font-size: .8rem; }
.mock-btn.dk { background: var(--ink); color: #fff; }
.mock-bar-aforo { height: 6px; border-radius: 99px; background: var(--soft); overflow: hidden; }
.mock-bar-aforo i { display: block; height: 100%; background: var(--accent); }
figcaption { font-size: .82rem; color: var(--muted); margin-top: .5rem; }

details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin: .6rem 0; max-width: 46rem; }
summary { cursor: pointer; padding: .9rem 1.1rem; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font: 700 1.1rem var(--mono); color: var(--accent-strong); }
details[open] summary::after { content: "–"; }
details > div { padding: 0 1.1rem 1rem; color: var(--fg); }
details > div p:first-child { margin-top: 0; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3.5rem; }
.pager a { border: 1px solid var(--line); background: var(--card); border-radius: 12px; padding: .9rem 1.1rem; text-decoration: none; color: var(--fg); }
.pager a:hover { border-color: var(--accent); }
.pager small { display: block; font: 400 .68rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.pager .next { text-align: right; grid-column: 2; }

footer.site { border-top: 1px solid var(--line); margin-top: 2rem; padding: 2rem 1.25rem; color: var(--muted); font-size: .88rem; }
footer.site div { max-width: 1360px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: .5rem 2rem; justify-content: space-between; }

/* ---------- Portada ---------- */
.hero { background: var(--ink); color: #f5f3ec; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; right: -8rem; top: -10rem; width: 34rem; height: 34rem; border-radius: 50%; background: rgba(245, 179, 1, .18); filter: blur(80px); }
.hero-in { max-width: 1100px; margin: 0 auto; padding: 4.5rem 1.25rem 4rem; position: relative; }
.hero .eyebrow { color: var(--accent); }
.hero h1 { font-size: clamp(2.3rem, 6vw, 4rem); max-width: 18ch; margin: .8rem 0 1rem; }
.hero p { color: rgba(245, 243, 236, .72); font-size: 1.2rem; max-width: 40rem; margin: 0 0 1.75rem; }
.hero-search { display: flex; max-width: 34rem; }
.hero-search button { flex: 1; text-align: left; justify-content: space-between; background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .18); color: rgba(245, 243, 236, .75); padding: .9rem 1.1rem; font-size: 1rem; font-weight: 400; }
.hero-search button:hover { border-color: var(--accent); color: #fff; }
.home { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem 4rem; }
.home h2 { border-top: 0; padding-top: 0; margin-top: 3.5rem; }
.home main { padding-top: 0; }

/* ---------- Búsqueda ---------- */
.search-overlay { position: fixed; inset: 0; z-index: 80; background: rgba(10, 9, 8, .6); display: none; align-items: flex-start; justify-content: center; padding: 8vh 1rem 1rem; backdrop-filter: blur(3px); }
.search-overlay.open { display: flex; }
.search-box { width: 100%; max-width: 40rem; background: var(--card); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 30px 80px rgba(0, 0, 0, .4); overflow: hidden; }
.search-box input { width: 100%; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--fg); font: 400 1.05rem var(--sans); padding: 1.1rem 1.25rem; outline: none; }
.search-results { max-height: 55vh; overflow: auto; margin: 0; padding: .4rem; list-style: none; }
.search-results li { margin: 0; max-width: none; }
.search-results a { display: block; padding: .65rem .85rem; border-radius: 10px; text-decoration: none; color: var(--fg); }
.search-results a:hover, .search-results a.sel { background: var(--accent-soft); }
.search-results small { display: block; color: var(--muted); font-size: .8rem; }
.search-results .where { font: 400 .65rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--link); }
.search-empty { padding: 1.5rem; text-align: center; color: var(--muted); }

/* ---------- Adaptación ---------- */
@media (max-width: 1180px) { .shell { grid-template-columns: 15rem minmax(0, 1fr); } .toc { display: none; } }
@media (max-width: 860px) {
  .menu-btn { display: inline-flex; }
  .hide-sm { display: none; }
  .shell, .shell.no-toc { display: block; padding: 0 1rem; }
  .side { position: fixed; z-index: 60; inset: 0 auto 0 0; width: min(19rem, 86vw); max-height: none; background: var(--bg); border-right: 1px solid var(--line); padding: 1.25rem; transform: translateX(-102%); transition: transform .2s; }
  .side.open { transform: none; box-shadow: 0 0 60px rgba(0, 0, 0, .35); }
  .brand span { display: none; }
  main { padding-top: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

/* ---------- Impresión (manual en papel / PDF) ---------- */
@media print {
  .topbar, .side, .toc, .pager, .menu-btn, .search-overlay, footer.site .no-print { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .shell, .shell.no-toc { display: block; max-width: none; padding: 0; }
  .glance { background: #fff; color: #000; border: 1px solid #000; }
  .glance .eyebrow, .glance a { color: #000; }
  details { border: 0; } details > div { display: block; }
  a { color: #000; text-decoration: none; }
  h2 { break-after: avoid; } .callout, .mock-win, ol.steps > li { break-inside: avoid; }
}