/* UtecDocs — estilos globales */

:root{
  color-scheme: light dark;
  interpolate-size: allow-keywords;

  --bg:#f5f5f7;
  --surface:#ffffff;
  --surface-2:#fbfbfd;
  --fill:rgba(0,0,0,.04);
  --fill-2:rgba(0,0,0,.075);
  --text:#1d1d1f;
  --muted:#6e6e73;
  --faint:#86868b;
  --line:rgba(0,0,0,.08);
  --accent:#0071e3;
  --accent-text:#0066cc;
  --accent-soft:rgba(0,113,227,.1);
  --ok:#248a3d;
  --ok-soft:rgba(52,199,89,.14);
  --bad:#d70015;
  --bad-soft:rgba(255,59,48,.12);
  --warn:#b25000;
  --warn-soft:rgba(255,149,0,.14);
  --glass:rgba(251,251,253,.72);
  --shadow:0 2px 8px rgba(0,0,0,.04), 0 12px 32px rgba(0,0,0,.06);
  --shadow-lg:0 24px 80px rgba(0,0,0,.18);
  --hero-puntos:.9;
  --hero-img:url("img/utec-binario-claro.webp?v=1");

  --r-lg:22px;
  --r:16px;
  --r-sm:11px;

  --ease:cubic-bezier(.32,.72,0,1);
  --ease-out:cubic-bezier(.22,1,.36,1);
  --spring:cubic-bezier(.34,1.56,.64,1);

  --font:-apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;
  --font-display:-apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Segoe UI", Roboto, sans-serif;
}
/* tema oscuro: por elección (botón) o por el sistema si no se eligió nada */
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#000000;
  --surface:#1c1c1e;
  --surface-2:#2c2c2e;
  --fill:rgba(255,255,255,.06);
  --fill-2:rgba(255,255,255,.11);
  --text:#f5f5f7;
  --muted:#a1a1a6;
  --faint:#6e6e73;
  --line:rgba(255,255,255,.1);
  --accent:#0a84ff;
  --accent-text:#2997ff;
  --accent-soft:rgba(10,132,255,.18);
  --ok:#30d158;
  --ok-soft:rgba(48,209,88,.16);
  --bad:#ff453a;
  --bad-soft:rgba(255,69,58,.16);
  --warn:#ff9f0a;
  --warn-soft:rgba(255,159,10,.16);
  --glass:rgba(22,22,23,.72);
  --shadow:none;
  --shadow-lg:0 24px 80px rgba(0,0,0,.6);
  --hero-puntos:.95;
  --hero-img:url("img/utec-binario-oscuro.webp?v=1");
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#000000;
    --surface:#1c1c1e;
    --surface-2:#2c2c2e;
    --fill:rgba(255,255,255,.06);
    --fill-2:rgba(255,255,255,.11);
    --text:#f5f5f7;
    --muted:#a1a1a6;
    --faint:#6e6e73;
    --line:rgba(255,255,255,.1);
    --accent:#0a84ff;
    --accent-text:#2997ff;
    --accent-soft:rgba(10,132,255,.18);
    --ok:#30d158;
    --ok-soft:rgba(48,209,88,.16);
    --bad:#ff453a;
    --bad-soft:rgba(255,69,58,.16);
    --warn:#ff9f0a;
    --warn-soft:rgba(255,159,10,.16);
    --glass:rgba(22,22,23,.72);
    --shadow:none;
    --shadow-lg:0 24px 80px rgba(0,0,0,.6);
    --hero-puntos:.95;
    --hero-img:url("img/utec-binario-oscuro.webp?v=1");
  }
}
:root[data-theme="light"]{color-scheme:light}

*{box-sizing:border-box}
[hidden]{display:none !important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.47;
  letter-spacing:-.022em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  -webkit-tap-highlight-color:transparent;
}
a{color:var(--accent-text);text-decoration:none}
button{font:inherit;letter-spacing:inherit;color:inherit}
svg{display:block}
:focus-visible{outline:3px solid var(--accent-soft);outline-offset:2px;border-radius:10px}

/* ---------- transiciones entre páginas ---------- */
@view-transition{navigation:auto}
::view-transition-old(root){animation:vt-out .22s var(--ease) both}
::view-transition-new(root){animation:vt-in .45s var(--ease) both}
@keyframes vt-out{to{opacity:0;transform:translateY(-8px)}}
@keyframes vt-in{from{opacity:0;transform:translateY(14px)}}

/* ---------- barra superior ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  view-transition-name:topbar;
  background:var(--glass);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom:.5px solid var(--line);
}
.topbar__in{
  max-width:1040px;margin:0 auto;height:56px;padding:0 20px;
  display:flex;align-items:center;gap:14px;
}
.brand{
  display:flex;align-items:center;gap:9px;
  color:var(--text);font-weight:600;font-size:19px;letter-spacing:-.03em;
  transition:opacity .2s;
}
.brand:hover{opacity:.75}
.brand img{border-radius:6px}
.search{
  margin-left:auto;
  display:flex;align-items:center;gap:8px;
  width:min(300px,42vw);height:36px;padding:0 12px;
  background:var(--fill);border-radius:999px;
  color:var(--muted);
  transition:background .25s var(--ease), width .45s var(--ease), box-shadow .25s;
}
.search:focus-within{background:var(--surface);box-shadow:0 0 0 4px var(--accent-soft);width:min(380px,52vw)}
.search input{
  flex:1;min-width:0;border:0;outline:0;background:transparent;
  color:var(--text);font:inherit;font-size:15px;
}
.search input::placeholder{color:var(--faint)}
.search input::-webkit-search-cancel-button{filter:grayscale(1);opacity:.6}
.btn-pill{
  flex:none;display:inline-flex;align-items:center;gap:6px;
  height:34px;padding:0 15px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:14px;font-weight:500;letter-spacing:-.01em;
  transition:transform .3s var(--spring), filter .2s;
}
.btn-pill:hover{filter:brightness(1.1)}
.btn-pill:active{transform:scale(.95)}
@media (max-width:560px){
  .topbar__in{padding:0 14px;gap:10px}
  .brand span{display:none}
  .search,.search:focus-within{width:auto;flex:1;min-width:0}
  .btn-pill{padding:0 13px}
  .btn-pill .btn-pill__long{display:none}
}

/* ---------- contenido ---------- */
.wrap{max-width:1040px;margin:0 auto;padding:28px 20px 96px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ruta: botón volver + cápsula de vidrio */
.crumbs{display:flex;align-items:center;gap:8px;margin-bottom:18px;animation:rise .5s var(--ease-out) both}
.crumbs__back,.crumbs__list{
  background:var(--glass);
  -webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);
  box-shadow:inset 0 0 0 .5px var(--line), var(--shadow);
}
.crumbs__back{
  flex:none;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:var(--text);
  transition:transform .4s var(--spring), background .2s;
}
.crumbs__back:hover{background:var(--fill-2);transform:translateX(-2px)}
.crumbs__back:active{transform:scale(.9)}
.crumbs__list{
  display:flex;align-items:center;min-width:0;list-style:none;margin:0;padding:4px;border-radius:999px;
  overflow-x:auto;scrollbar-width:none;
}
.crumbs__list::-webkit-scrollbar{display:none}
.crumbs__list li{display:flex;align-items:center;flex:none}
.crumbs__list li + li::before{
  content:"";width:6px;height:6px;margin:0 3px 0 1px;
  border-top:1.6px solid var(--faint);border-right:1.6px solid var(--faint);transform:rotate(45deg);
}
.crumbs__list a{
  display:flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  font-size:14px;font-weight:500;letter-spacing:-.01em;white-space:nowrap;color:var(--muted);
  transition:background .2s, color .2s, transform .35s var(--spring);
}
.crumbs__list a:hover{background:var(--fill-2);color:var(--text)}
.crumbs__list a:active{transform:scale(.94)}
.crumbs__list li:last-child a{background:var(--accent-soft);color:var(--accent-text)}
.crumbs__home{padding:0 10px !important}
.title{
  font-family:var(--font-display);
  font-size:clamp(34px,5.4vw,48px);line-height:1.08;font-weight:700;letter-spacing:-.035em;
  margin:0 0 6px;
}
.subtitle{color:var(--muted);font-size:17px;margin:0 0 30px}

.hero{padding:40px 0 34px;text-align:center}
.hero .title{font-size:clamp(40px,7vw,64px);max-width:16ch;margin:0 auto 14px}
.hero .subtitle{font-size:clamp(18px,2.4vw,21px);max-width:34ch;margin:0 auto}
.hero-in{animation:rise .8s var(--ease-out) both}

.section{margin-top:34px}
.section__title{
  font-size:22px;font-weight:600;letter-spacing:-.025em;margin:0 0 12px;
}
.empty{text-align:center;color:var(--muted);padding:40px 0;animation:rise .4s var(--ease-out) both}

/* ---------- listas estilo iOS ---------- */
.list{
  list-style:none;margin:0;padding:6px;
  background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--shadow);
}
.itemrow{animation:rise .55s var(--ease-out) both;animation-delay:calc(min(var(--i,0),14) * 28ms)}
@keyframes rise{from{opacity:0;transform:translateY(12px)}}
.row{
  display:flex;align-items:center;gap:14px;
  min-height:58px;padding:9px 12px;border-radius:var(--r-sm);
  color:var(--text);
  transition:background .2s, transform .35s var(--spring);
}
.row:hover{background:var(--fill)}
.row:active{transform:scale(.985);background:var(--fill-2)}
.itemrow + .itemrow .row{position:relative}
.itemrow + .itemrow .row::before{
  content:"";position:absolute;top:0;left:60px;right:12px;border-top:.5px solid var(--line);
  transition:opacity .2s;
}
.row:hover::before,.itemrow:hover + .itemrow .row::before{opacity:0}
.row__icon{
  flex:none;width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
}
.row__icon--folder{background:var(--accent-soft);color:var(--accent)}
.row__icon--file{background:var(--bad-soft);color:var(--bad);font-size:9.5px;font-weight:700;letter-spacing:.02em}
.row__text{flex:1;min-width:0;display:flex;flex-direction:column}
.row__name{font-size:16px;line-height:1.3;overflow-wrap:anywhere}
.row__meta{font-size:13px;color:var(--muted);margin-top:1px}
.row__end{flex:none;color:var(--faint);transition:transform .35s var(--spring), color .2s}
.row:hover .row__end{color:var(--muted);transform:translateX(3px)}
a.row[target="_blank"]:hover .row__end{transform:translate(2px,-2px)}

/* tarjetas de cursos (inicio) */
.grid{
  list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;
}
.tile{
  position:relative;display:flex;flex-direction:column;justify-content:space-between;
  min-height:170px;padding:22px;border-radius:var(--r-lg);
  background:var(--surface);box-shadow:var(--shadow);color:var(--text);overflow:hidden;
  transition:transform .5s var(--spring), box-shadow .4s var(--ease);
}
.tile:hover{transform:translateY(-4px) scale(1.012);box-shadow:var(--shadow-lg)}
.tile:active{transform:scale(.98);transition-duration:.2s}
.tile__icon{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:var(--accent-soft);color:var(--accent);
}
.tile__name{font-family:var(--font-display);font-size:22px;font-weight:600;letter-spacing:-.03em;line-height:1.15;margin:18px 0 4px}
.tile__meta{font-size:14px;color:var(--muted)}
.tile__go{
  position:absolute;top:22px;right:22px;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;background:var(--fill);color:var(--muted);
  transition:transform .45s var(--spring), background .2s, color .2s;
}
.tile:hover .tile__go{transform:translateX(3px);background:var(--accent);color:#fff}

/* grupos por ciclo */
.year-group{margin-top:22px}
.year-group > summary{
  list-style:none;cursor:pointer;user-select:none;
  display:flex;align-items:center;gap:10px;
  padding:6px 4px 10px;font-size:20px;font-weight:600;letter-spacing:-.02em;
}
.year-group > summary::-webkit-details-marker{display:none}
.year-count{font-size:14px;font-weight:400;color:var(--muted);letter-spacing:-.01em}
.year-group > summary::after{
  content:"";margin-left:auto;width:9px;height:9px;
  border-right:2px solid var(--faint);border-bottom:2px solid var(--faint);
  transform:rotate(45deg) translate(-2px,-2px);
  transition:transform .45s var(--spring);
}
.year-group:not([open]) > summary::after{transform:rotate(-45deg)}
.year-group::details-content{
  block-size:0;overflow:clip;opacity:0;
  transition:block-size .5s var(--ease), opacity .35s var(--ease), content-visibility .5s allow-discrete;
}
.year-group[open]::details-content{block-size:auto;opacity:1}

/* ---------- calculadora: botón de apertura ---------- */
.cx-launch{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:18px 20px;margin:0 0 6px;border:0;cursor:pointer;
  border-radius:var(--r-lg);background:var(--surface);box-shadow:var(--shadow);
  animation:rise .6s var(--ease-out) both;
  transition:transform .5s var(--spring), box-shadow .4s var(--ease);
}
.cx-launch:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.cx-launch:active{transform:scale(.985);transition-duration:.2s}
.cx-launch__icon{
  flex:none;width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  background:linear-gradient(160deg,#4fa3ff,#0a6cff);color:#fff;
}
.cx-launch__text{flex:1;min-width:0;display:flex;flex-direction:column}
.cx-launch__text strong{font-size:18px;font-weight:600;letter-spacing:-.02em}
.cx-launch__text small{font-size:14px;color:var(--muted)}
.cx-launch__badge{
  flex:none;font-size:13px;font-weight:500;padding:5px 11px;border-radius:999px;
  background:var(--fill);color:var(--muted);
}
.cx-launch__badge.is-ok{background:var(--ok-soft);color:var(--ok)}
.cx-launch__badge.is-bad{background:var(--bad-soft);color:var(--bad)}
.cx-launch__go{flex:none;color:var(--faint);transition:transform .45s var(--spring)}
.cx-launch:hover .cx-launch__go{transform:translateX(3px);color:var(--accent)}
@media (max-width:560px){.cx-launch__badge{display:none}}

/* ---------- calculadora: hoja ---------- */
html.cx-lock{overflow:hidden}
.cx{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px}
.cx[hidden]{display:none}
.cx__backdrop{
  position:absolute;inset:0;background:rgba(0,0,0,.38);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  opacity:0;transition:opacity .45s var(--ease);
}
.cx__panel{
  position:relative;width:min(1000px,100%);max-height:min(880px,100%);
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg);border-radius:28px;box-shadow:var(--shadow-lg);
  opacity:0;transform:translateY(28px) scale(.965);
  transition:transform .55s var(--ease), opacity .35s var(--ease);
  outline:none;
}
.cx.is-open .cx__backdrop{opacity:1}
.cx.is-open .cx__panel{opacity:1;transform:none}
.cx__panel.is-dragging{transition:none}
.cx__grab{display:none}
.cx__head{
  flex:none;display:flex;align-items:center;gap:12px;
  padding:20px 22px 14px;
  border-bottom:.5px solid transparent;transition:border-color .3s;
}
.cx__head.is-scrolled{border-bottom-color:var(--line)}
.cx__head-text{flex:1;min-width:0}
.cx__eyebrow{margin:0;font-size:13px;font-weight:600;color:var(--accent-text);letter-spacing:-.005em}
.cx__head h2{margin:0;font-family:var(--font-display);font-size:26px;font-weight:700;letter-spacing:-.03em;line-height:1.15}
.cx__saved{
  display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);white-space:nowrap;
}
.cx__saved i{width:7px;height:7px;border-radius:50%;background:var(--ok);transition:transform .3s var(--spring)}
.cx__saved.is-saving i{background:var(--warn);animation:pulse .8s ease-in-out infinite}
@keyframes pulse{50%{transform:scale(.6);opacity:.5}}
.cx__close{
  flex:none;width:34px;height:34px;border:0;border-radius:50%;cursor:pointer;
  display:grid;place-items:center;background:var(--fill-2);color:var(--muted);
  transition:transform .35s var(--spring), background .2s;
}
.cx__close:hover{background:var(--fill-2);color:var(--text)}
.cx__close:active{transform:scale(.88)}
.cx__body{
  flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;
  display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start;
  padding:6px 22px 24px;
}
.cx__list{display:flex;flex-direction:column;gap:10px}

/* filas */
.cx-row{
  background:var(--surface);border-radius:var(--r);box-shadow:var(--shadow);
  animation:rise .5s var(--ease-out) both;animation-delay:calc(var(--i,0) * 45ms + 120ms);
}
.cx-row__head{
  width:100%;display:flex;align-items:center;gap:12px;min-height:64px;padding:10px 14px 10px 16px;
  border:0;background:none;text-align:left;
}
.cx-row__toggle{cursor:pointer;border-radius:var(--r);transition:background .2s}
.cx-row__toggle:hover{background:var(--fill)}
.cx-dot{flex:none;width:10px;height:10px;border-radius:50%;background:var(--c)}
.cx-row__label{flex:1;min-width:0;display:flex;flex-direction:column}
.cx-row__label strong{font-size:16px;font-weight:600;letter-spacing:-.02em}
.cx-row__label small{font-size:13px;color:var(--muted)}
.cx-field{flex:none;display:flex;flex-direction:column;align-items:flex-end;gap:2px}
.cx-input{
  width:86px;height:42px;padding:0 10px;text-align:center;
  font:inherit;font-size:19px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  color:var(--text);background:var(--fill);border:0;border-radius:12px;outline:0;
  transition:background .2s, box-shadow .3s var(--ease), transform .3s var(--spring);
}
.cx-input::placeholder{color:var(--faint);font-weight:400}
.cx-input:hover{background:var(--fill-2)}
.cx-input:focus{background:var(--surface);box-shadow:0 0 0 2px var(--accent), 0 0 0 6px var(--accent-soft);transform:scale(1.03)}
.cx-input.is-invalid{box-shadow:0 0 0 2px var(--bad), 0 0 0 6px var(--bad-soft)}
.cx-input.shake{animation:shake .4s var(--ease)}
@keyframes shake{20%{transform:translateX(-6px)}40%{transform:translateX(5px)}60%{transform:translateX(-3px)}80%{transform:translateX(2px)}}
.cx-hint{
  font-size:12px;color:var(--muted);height:15px;font-variant-numeric:tabular-nums;
  opacity:0;transform:translateY(-3px);transition:opacity .25s, transform .35s var(--ease);
}
.cx-hint.is-on{opacity:1;transform:none}

/* pastilla de nota calculada */
.cx-pill{
  flex:none;display:flex;align-items:baseline;gap:6px;
  min-width:86px;justify-content:center;padding:8px 12px;border-radius:12px;
  background:var(--accent-soft);color:var(--accent-text);font-variant-numeric:tabular-nums;
}
.cx-pill__raw{font-size:12px;opacity:.75}
.cx-pill__reg{font-size:19px;font-weight:700;letter-spacing:-.02em}
.cx-pill.is-bad{background:var(--bad-soft);color:var(--bad)}
.cx-chev{flex:none;color:var(--faint);transition:transform .5s var(--spring)}
.cx-row.is-open .cx-chev{transform:rotate(180deg)}

/* panel desplegable */
.cx-sub{display:grid;grid-template-rows:0fr;transition:grid-template-rows .55s var(--ease)}
.cx-row.is-open .cx-sub{grid-template-rows:1fr}
.cx-sub__in{
  min-height:0;overflow:hidden;
  padding:0 16px;opacity:0;transform:translateY(-6px);
  transition:opacity .3s var(--ease), transform .5s var(--ease), padding .55s var(--ease);
}
.cx-row.is-open .cx-sub__in{padding:2px 16px 16px;opacity:1;transform:none;transition-delay:.06s}
.cx-sub__note{margin:0 0 12px;font-size:13px;color:var(--muted)}
.cx-sec{margin-top:12px}
.cx-sec:first-of-type{margin-top:0}
.cx-sec__head{display:flex;justify-content:space-between;gap:10px;align-items:baseline;margin-bottom:8px}
.cx-sec__head span{font-size:14px;font-weight:600;letter-spacing:-.01em}
.cx-sec__head small{font-size:12px;color:var(--muted);text-align:right}
.cx-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(82px,1fr));gap:8px}
.cx-mini{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--muted);font-weight:500}
.cx-mini .cx-input{width:100%;height:40px;font-size:17px}
.cx-sub__detail{margin:14px 0 0;padding-top:12px;border-top:.5px solid var(--line);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.cx-sec[data-mode]:not(.is-active){display:none}
.cx-sec[data-mode].is-active{animation:rise .4s var(--ease-out) both}

/* control segmentado */
.cx-seg{
  position:relative;display:grid;grid-auto-flow:column;grid-auto-columns:1fr;
  padding:3px;margin-bottom:14px;border-radius:12px;background:var(--fill-2);
}
.cx-seg__thumb{
  position:absolute;top:3px;bottom:3px;left:3px;border-radius:9px;
  background:var(--surface);box-shadow:0 3px 8px rgba(0,0,0,.12), 0 0 0 .5px rgba(0,0,0,.04);
  transition:transform .5s var(--spring), width .5s var(--spring);
}
.cx-seg button{
  position:relative;z-index:1;border:0;background:none;cursor:pointer;
  height:32px;font-size:13.5px;font-weight:500;color:var(--muted);transition:color .25s;
}
.cx-seg button[aria-pressed="true"]{color:var(--text)}

/* resultado */
.cx-result{
  position:sticky;top:6px;
  background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--shadow);
  padding:22px;animation:rise .6s var(--ease-out) .1s both;
}
.cx-result__label{margin:0;font-size:14px;font-weight:500;color:var(--muted)}
.cx-result__big{
  font-family:var(--font-display);font-size:72px;line-height:1;font-weight:700;letter-spacing:-.05em;
  font-variant-numeric:tabular-nums;margin:6px 0 2px;
}
.cx-result__exact{margin:0;font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums;min-height:21px}
.cx-meter{position:relative;margin:20px 0 6px}
.cx-meter__track{display:flex;height:10px;border-radius:999px;overflow:hidden;background:var(--fill-2)}
.cx-meter__seg{height:100%;width:0;background:var(--c);transition:width .7s var(--ease)}
.cx-meter__seg + .cx-meter__seg{box-shadow:inset 1.5px 0 0 var(--surface)}
.cx-meter__pass{position:absolute;top:-4px;bottom:-4px;left:52.5%;width:2px;border-radius:2px;background:var(--text)}
.cx-meter__scale{display:flex;justify-content:space-between;font-size:11.5px;color:var(--faint);font-variant-numeric:tabular-nums}
.cx-meter__scale span:nth-child(2){position:relative;left:2.5%}
.cx-status{
  display:inline-flex;align-items:center;gap:7px;margin-top:16px;
  padding:7px 13px;border-radius:999px;font-size:14px;font-weight:600;letter-spacing:-.01em;
  background:var(--fill-2);color:var(--muted);
}
.cx-status.is-ok{background:var(--ok-soft);color:var(--ok)}
.cx-status.is-bad{background:var(--bad-soft);color:var(--bad)}
.cx-status.is-wait{background:var(--warn-soft);color:var(--warn)}
.cx-status.pop{animation:pop .5s var(--spring)}
@keyframes pop{from{transform:scale(.85);opacity:.4}}
.cx-status__text{display:block;margin:6px 0 0;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.cx-need{display:grid;grid-template-rows:0fr;transition:grid-template-rows .5s var(--ease)}
.cx-need.is-on{grid-template-rows:1fr}
.cx-need__in{min-height:0;overflow:hidden}
.cx-need__box{margin-top:16px;padding:14px 16px;border-radius:var(--r);background:var(--accent-soft)}
.cx-need__box p{margin:0;font-size:13px;color:var(--accent-text);font-weight:500}
.cx-need__box strong{display:block;font-family:var(--font-display);font-size:34px;font-weight:700;letter-spacing:-.04em;color:var(--accent-text);line-height:1.15;font-variant-numeric:tabular-nums}
.cx-need__box small{display:block;font-size:12.5px;color:var(--muted);line-height:1.4}
.cx-formula{margin-top:16px;border-top:.5px solid var(--line);padding-top:12px}
.cx-formula > summary{
  list-style:none;cursor:pointer;font-size:14px;font-weight:500;color:var(--accent-text);
  display:flex;align-items:center;gap:6px;
}
.cx-formula > summary::-webkit-details-marker{display:none}
.cx-formula > summary svg{transition:transform .45s var(--spring)}
.cx-formula[open] > summary svg{transform:rotate(90deg)}
.cx-formula::details-content{
  block-size:0;overflow:clip;opacity:0;
  transition:block-size .45s var(--ease), opacity .3s, content-visibility .45s allow-discrete;
}
.cx-formula[open]::details-content{block-size:auto;opacity:1}
.cx-break{list-style:none;margin:10px 0 0;padding:0;font-size:13.5px;font-variant-numeric:tabular-nums}
.cx-break li{display:flex;justify-content:space-between;gap:12px;padding:5px 0;border-bottom:.5px solid var(--line)}
.cx-break li span:first-child{color:var(--muted)}
.cx-break__formula{margin:10px 0 0;font-size:12.5px;color:var(--muted);line-height:1.5}
.cx-actions{display:flex;gap:8px;margin-top:16px}
.cx-btn{
  flex:1;height:38px;border:0;border-radius:11px;cursor:pointer;
  font-size:14px;font-weight:500;background:var(--fill-2);color:var(--text);
  transition:transform .35s var(--spring), background .2s;
}
.cx-btn:hover{background:var(--line)}
.cx-btn:active{transform:scale(.95)}
.cx-btn--danger{color:var(--bad)}

/* hoja en celular */
@media (max-width:760px){
  .cx{padding:0;align-items:flex-end}
  .cx__panel{
    width:100%;max-height:94vh;max-height:94dvh;height:94dvh;border-radius:24px 24px 0 0;
    transform:translateY(100%);opacity:1;
  }
  .cx.is-open .cx__panel{transform:translateY(var(--drag,0px))}
  .cx__grab{display:block;flex:none;width:38px;height:5px;margin:8px auto 0;border-radius:3px;background:var(--fill-2);touch-action:none}
  .cx__head{padding:10px 18px 12px;touch-action:none}
  .cx__head h2{font-size:22px}
  .cx__saved span{display:none}
  .cx__body{display:flex;flex-direction:column-reverse;justify-content:flex-end;padding:4px 14px 40px;gap:12px}
  .cx-result{position:relative;top:0;padding:16px 18px}
  .cx-result__big{font-size:48px}
  .cx-meter{margin:12px 0 4px}
  .cx-status{margin-top:12px}
  .cx-status__text{display:none}
  .cx-need__box{margin-top:12px;padding:10px 14px}
  .cx-need__box strong{font-size:28px}
  .cx-formula,.cx-actions{margin-top:12px}
  .cx-input{width:78px}
}

/* ---------- botón de tema ---------- */
.theme-btn{
  flex:none;position:relative;width:34px;height:34px;border:0;border-radius:50%;cursor:pointer;
  display:grid;place-items:center;background:var(--fill);color:var(--text);overflow:hidden;
  transition:background .2s, transform .35s var(--spring);
}
.theme-btn:hover{background:var(--fill-2)}
.theme-btn:active{transform:scale(.88)}
.theme-btn svg{position:absolute;transition:transform .6s var(--spring), opacity .3s var(--ease)}
.theme-btn .i-sol{transform:rotate(-90deg) scale(.4);opacity:0}
.theme-btn .i-luna{transform:none;opacity:1}
:root[data-theme="dark"] .theme-btn .i-sol{transform:none;opacity:1}
:root[data-theme="dark"] .theme-btn .i-luna{transform:rotate(90deg) scale(.4);opacity:0}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .theme-btn .i-sol{transform:none;opacity:1}
  :root:not([data-theme="light"]) .theme-btn .i-luna{transform:rotate(90deg) scale(.4);opacity:0}
}
::view-transition-old(root),::view-transition-new(root){mix-blend-mode:normal}
html.theme-switching::view-transition-old(root){animation:none}
html.theme-switching::view-transition-new(root){animation:theme-reveal .7s var(--ease) both}
@keyframes theme-reveal{from{clip-path:circle(0 at var(--tx,100%) var(--ty,0))}to{clip-path:circle(var(--tr,150vmax) at var(--tx,100%) var(--ty,0))}}
html.theme-switching .topbar{view-transition-name:none}

/* ---------- fondo de la portada ---------- */
.hero-bg{
  position:fixed;inset:0;z-index:0;
  overflow:hidden;pointer-events:none;
  -webkit-mask-image:linear-gradient(to bottom,#000 70%,rgba(0,0,0,.35) 100%);
  mask-image:linear-gradient(to bottom,#000 70%,rgba(0,0,0,.35) 100%);
}
.hero-bg__puntos{
  position:absolute;inset:-4% -2%;background-position:center;background-size:cover;
  will-change:transform;
}
.hero-bg__puntos{
  background-image:var(--hero-img);opacity:var(--hero-puntos);
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 14%,#000 86%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 14%,#000 86%,transparent 100%);
  animation:puntos-in 1.6s var(--ease-out) both;
}
@keyframes puntos-in{from{opacity:0;transform:scale(1.06)}}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse 52% 42% at 50% 54%,color-mix(in srgb,var(--bg) 80%,transparent) 0%,color-mix(in srgb,var(--bg) 35%,transparent) 60%,transparent 100%);
}
/* páginas internas: el título va a la izquierda, así que el fondo se despeja por ese lado */
.hero-bg--interior .hero-bg__puntos{
  opacity:calc(var(--hero-puntos) * .75);background-position:right center;
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 30%,#000 92%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 30%,#000 92%,transparent 100%);
}
.hero-bg--interior::after{
  background:linear-gradient(90deg,var(--bg) 0%,color-mix(in srgb,var(--bg) 75%,transparent) 30%,transparent 70%);
}
@media (max-width:760px){
  .hero-bg--interior .hero-bg__puntos{opacity:calc(var(--hero-puntos) * .5)}
}
body > main{position:relative;z-index:1}
.hero{min-height:min(520px,70vh);display:flex;align-items:center;justify-content:center}
.hero .title span{color:#12b5ea}

/* ---------- personas en línea ---------- */
.online{
  display:inline-flex;align-items:center;gap:8px;margin:22px auto 0;padding:7px 14px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--text);font-variant-numeric:tabular-nums;
  background:var(--glass);-webkit-backdrop-filter:saturate(180%) blur(16px);backdrop-filter:saturate(180%) blur(16px);
  box-shadow:inset 0 0 0 .5px var(--line);
  animation:rise .6s var(--ease-out) both;
}
.online i{position:relative;width:8px;height:8px;border-radius:50%;background:#30d158;flex:none}
.online i::after{
  content:"";position:absolute;inset:0;border-radius:50%;background:#30d158;
  animation:latido 2s var(--ease-out) infinite;
}
@keyframes latido{from{transform:scale(1);opacity:.7}to{transform:scale(3.2);opacity:0}}
.online span{display:inline-block}
.online.is-pop span{animation:pop .5s var(--spring)}
.online--bar{margin:0;padding:5px 11px;font-size:13px;background:var(--fill);box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
@media (max-width:760px){.online--bar{display:none !important}}

/* ---------- compartir ---------- */
.title-row{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.title-row .title{margin-bottom:0}
.share-btn{
  flex:none;display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 15px;border:0;border-radius:999px;cursor:pointer;
  font-size:14px;font-weight:500;color:var(--text);
  background:var(--glass);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);
  box-shadow:inset 0 0 0 .5px var(--line);
  transition:transform .35s var(--spring), background .2s;
}
.share-btn:hover{background:var(--fill-2)}
.share-btn:active{transform:scale(.94)}
.title-row + .subtitle{margin-top:6px}
.itemrow{position:relative}
.row-share{
  position:absolute;top:50%;right:44px;width:32px;height:32px;margin-top:-16px;border:0;border-radius:50%;cursor:pointer;
  display:grid;place-items:center;background:transparent;color:var(--faint);
  opacity:0;transition:opacity .2s, background .2s, color .2s, transform .3s var(--spring);
}
.itemrow:hover .row-share,.row-share:focus-visible{opacity:1}
.row-share:hover{background:var(--fill-2);color:var(--text)}
.row-share:active{transform:scale(.88)}
@media (hover:none){.row-share{opacity:1}}
.share-menu{
  position:absolute;z-index:200;min-width:200px;padding:6px;border-radius:16px;
  background:var(--glass);-webkit-backdrop-filter:saturate(180%) blur(24px);backdrop-filter:saturate(180%) blur(24px);
  box-shadow:inset 0 0 0 .5px var(--line), var(--shadow-lg);
  opacity:0;transform:translateY(-6px) scale(.96);transform-origin:top right;
  transition:opacity .2s var(--ease), transform .35s var(--spring);
}
.share-menu.is-on{opacity:1;transform:none}
.share-menu a,.share-menu button{
  width:100%;display:flex;align-items:center;gap:10px;padding:10px 12px;border:0;border-radius:10px;
  background:none;color:var(--text);font-size:15px;text-align:left;cursor:pointer;
}
.share-menu a:hover,.share-menu button:hover{background:var(--fill-2)}
.toast{
  position:fixed;left:50%;bottom:28px;z-index:300;padding:11px 18px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--text);
  background:var(--glass);-webkit-backdrop-filter:saturate(180%) blur(24px);backdrop-filter:saturate(180%) blur(24px);
  box-shadow:inset 0 0 0 .5px var(--line), var(--shadow-lg);
  opacity:0;transform:translate(-50%,16px);transition:opacity .25s var(--ease), transform .45s var(--spring);pointer-events:none;
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- borde de luz que sigue al mouse ---------- */
.glow{position:relative}
.glow::after,.glow::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  opacity:0;transition:opacity .35s var(--ease);
}
.glow::after{
  padding:1px;
  background:radial-gradient(200px circle at var(--gx,-300px) var(--gy,-300px),rgba(18,181,234,.95),rgba(18,181,234,0) 65%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.glow::before{background:radial-gradient(260px circle at var(--gx,-300px) var(--gy,-300px),rgba(18,181,234,.09),transparent 65%)}
.glow:hover::after,.glow:hover::before{opacity:1}
.online__n{font-weight:600;font-variant-numeric:tabular-nums}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-delay:0s !important;transition-duration:.01ms !important}
  ::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none !important}
}