/* Estilos compartidos de las páginas de tonotips (portada, demos, educación, capacitación).
   Paleta B · Lila + salvia: libreta clara para el sitio, plano violeta para el juego.
   Sin color-mix() para navegadores viejos. */
:root{
  /* Libreta */
  --paper:#FBF8F1; --paper2:#F4F0FA; --card:#FFFFFF; --ink:#1E1A2E; --muted:#5E5A6B;
  --line:#DDD5F0; --grid:rgba(106,75,196,.09); --margin:#A3CDAE;
  /* Color principal y secundario */
  --violet:#6A4BC4; --violet-dark:#4B2F9E; --lila:#C3B1F0; --lila-soft:#E6DCFA;
  --sage:#4E7A5C; --sage-dark:#355E42; --sage-soft:#D3E4D5; --sage-bright:#A3CDAE;
  /* Plano (juego) */
  --plano:#2B2160; --plano2:#352A72; --plano-ink:#F4F0FC; --plano-muted:#C9BEEA;
  /* Escuelas del juego (se conservan para distinguir temas) */
  --ari:#f0a35e; --alg:#6fa8e8; --fun:#5cc9a7; --geo:#e889b5; --est:#b39af0;
  --wa:#25d366;
  --radius:16px; --max:1080px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background-color:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;font-size:17px;line-height:1.6;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
img,svg{max-width:100%}
a{color:var(--violet)}
h1,h2,h3{font-family:Inter,system-ui,sans-serif;font-weight:800;line-height:1.15;margin:0;letter-spacing:-.02em}
mark{background:linear-gradient(transparent 58%,var(--sage-soft) 58%);color:inherit;padding:0 .08em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:var(--violet);color:#fff;padding:8px 12px;border-radius:8px}

/* Encabezado */
.hdr{position:sticky;top:0;z-index:20;background:rgba(251,248,241,.92);border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.hdr .wrap{display:flex;align-items:center;gap:16px;min-height:62px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo svg{width:38px;height:38px;flex:none;color:var(--ink)}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:600;padding:8px 10px;border-radius:8px}
.nav a:hover,.nav a[aria-current]{color:var(--violet);background:var(--paper2)}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:inherit;font-weight:700;font-size:1rem;
  text-decoration:none;border-radius:12px;padding:14px 22px;border:2px solid transparent;cursor:pointer;min-height:52px;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-pri{background:var(--violet);color:#fff;box-shadow:0 8px 20px -10px var(--violet)}
.btn-pri:hover{background:var(--violet-dark)}
.btn-sec{background:var(--sage);color:#fff}
.btn-sec:hover{background:var(--sage-dark)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{border-color:var(--violet);color:var(--violet)}
.btn-wa{background:var(--wa);color:#05210f}
.btn svg{width:20px;height:20px;flex:none}

/* Secciones */
section{padding:64px 0}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--violet);margin-bottom:12px}
.sec-title{font-size:clamp(1.55rem,4vw,2.2rem);margin-bottom:12px}
.sec-lead{color:var(--muted);max-width:640px;margin:0 0 32px}
.card{background:var(--card);border:1.5px solid var(--line);border-radius:var(--radius);padding:24px}

/* Pie */
.ftr{border-top:1px solid var(--line);background:rgba(251,248,241,.9);padding:32px 0 calc(32px + env(safe-area-inset-bottom));color:var(--muted);font-size:.88rem}
.ftr .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
.ftr a{color:var(--muted)}

@media (max-width:560px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .nav a{padding:8px 7px;font-size:.85rem}
  .logo{font-size:1.12rem;gap:8px}
  .logo svg{width:32px;height:32px}
  section{padding:48px 0}
  .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media (max-width:420px){
  .hdr .wrap{gap:8px}
  .nav{gap:0}
  .nav a{padding:8px 6px;font-size:.8rem}
  .logo{font-size:1.02rem}
}
@media (max-width:340px){.wrap{padding:0 12px}.nav a{padding:8px 4px;font-size:.76rem}.logo{font-size:.95rem}.logo svg{width:28px;height:28px}}
.btn-lila{background:var(--lila);color:var(--ink)}
.btn-lila:hover{background:#D3C5F5}
/* Banda oscura en "plano" (para secciones del juego) */
.band-plano{background-color:var(--plano);color:var(--plano-ink);
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:24px 24px}
.band-plano .eyebrow{color:var(--sage-bright)}
.band-plano .sec-lead{color:var(--plano-muted)}
.band-plano .card{border-color:transparent}

/* ---------- Diagrama de engranes (generado por herramientas/engranes.py) ---------- */
.gears{margin:0}
.gears figcaption{font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.gp-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gp{background:var(--card);border:1.5px solid var(--line);border-radius:16px;padding:16px 16px 18px;display:flex;flex-direction:column}
.gp-h{display:flex;gap:10px;align-items:center}
.gp-n{flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--violet);color:#fff;font-weight:800;font-size:.9rem}
.gp-h b{display:block;font-size:1.1rem;line-height:1.2}
.gp-h small{display:block;color:var(--muted);font-size:.82rem}
.gp svg{width:100%;height:auto;display:block;margin:6px 0 4px}
.gp p{margin:0;color:var(--muted);font-size:.93rem}
.gp-roto{border-color:#EBC2BE}
.gp-integrar{border-color:var(--sage-bright)}
.gp-integrar .gp-n{background:var(--sage)}
.gears .g{stroke-width:1.6;stroke-linejoin:round}
.gears .g-ok{fill:var(--lila-soft);stroke:var(--violet)}
.gp-integrar .g-ok{fill:var(--sage-soft);stroke:var(--sage)}
.gears .g-bad{fill:#F8DEDB;stroke:#C8423B}
.gears .g-fix{fill:var(--sage-soft);stroke:var(--sage);stroke-dasharray:4 3}
.gears .crack{fill:none;stroke:#C8423B;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.gears .hub{fill:var(--paper);stroke:var(--ink);stroke-width:1.2}
.gears text{font-family:Inter,system-ui,sans-serif;text-anchor:middle}
.gears .lab{font-size:13px;font-weight:700;fill:var(--ink)}
.gears .lab-bad{fill:#B3261E}
.gears .lab-fix{fill:var(--sage-dark)}
.gears .sym{font-size:11px;font-weight:800;fill:#B3261E;letter-spacing:.02em}
.gears .tag{font-size:11px;font-weight:600;fill:var(--muted)}
.gears .tag-fix{fill:var(--sage-dark);font-weight:800}
.gears .spin{transform-box:fill-box;transform-origin:center;animation:gspin linear infinite}
.gears .spin.rev{animation-direction:reverse}
@keyframes gspin{to{transform:rotate(360deg)}}
@media (max-width:820px){.gp-row{grid-template-columns:1fr}.gp svg{max-width:420px;margin:6px auto 4px}}

/* Bienvenida: diagrama neutro; los nombres aparecen al pasar el mouse por Educación o Capacitación */
.gmode{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:16px}
.gears-combo figcaption{text-align:center}
.gmode a{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:700;font-size:1.05rem;padding:13px 24px;border-radius:999px;border:2px solid var(--line);background:var(--card);color:var(--ink);transition:background .15s,color .15s,border-color .15s,transform .15s}
.gmode a .arr{transition:transform .15s}
.gmode a:hover,.gmode a:focus-visible{transform:translateY(-1px)}
.gmode a:hover .arr,.gmode a:focus-visible .arr{transform:translateX(3px)}
.gmode .gm-m{border-color:var(--violet);color:var(--violet)}
.gmode .gm-n{border-color:var(--sage);color:var(--sage-dark)}
.gmode .gm-m:hover,.gmode .gm-m:focus-visible,.gmode .gm-m.is-active{background:var(--violet);color:#fff}
.gmode .gm-n:hover,.gmode .gm-n:focus-visible,.gmode .gm-n.is-active{background:var(--sage);color:#fff}
/* Celular: barra que muestra cuánto falta para cambiar de ejemplo */
.gmode a{position:relative;overflow:hidden}
.gmode a.is-active::after{content:"";position:absolute;left:0;bottom:0;height:4px;width:0;background:rgba(255,255,255,.7);animation:gprog var(--ciclo,12s) linear forwards}
@keyframes gprog{to{width:100%}}
.gmode a:focus-visible{outline:3px solid var(--lila);outline-offset:2px}
.gears-combo .lb{transition:opacity .25s}
.gears-combo .lb-m,.gears-combo .lb-n{opacity:0}
.gears-combo[data-mode=m] .lb-0,.gears-combo[data-mode=n] .lb-0{opacity:0}
.gears-combo[data-mode=m] .lb-m,.gears-combo[data-mode=n] .lb-n{opacity:1}
.gears-combo figcaption,.gears-combo .gp p{display:grid}
.gears-combo .cp{grid-area:1/1;visibility:hidden}
.gears-combo[data-mode="0"] .cp-0,.gears-combo[data-mode=m] .cp-m,.gears-combo[data-mode=n] .cp-n{visibility:visible}
.gears-combo[data-mode=m] .gp-n{background:var(--violet)}
.gears-combo[data-mode=n] .gp-n{background:var(--sage)}
@media (max-width:560px){.gmode{flex-direction:column;align-items:stretch;max-width:320px;margin-left:auto;margin-right:auto}}
@media (hover:none){.gears-combo figcaption .cp-0{visibility:hidden!important}}