/* ============================================================
   iamultiagente — base compartida
   ------------------------------------------------------------
   Vocabulario de tokens neutral. Cada página define SU paleta
   sobre estos nombres; aquí nunca se escribe un color de marca.
   Ver el criterio de estilo en la memoria del proyecto.
   ============================================================ */

:root{
  /* Superficies y texto — valores neutros de respaldo */
  --bg:#F7F7F4;
  --surface:#FFFFFF;
  --surface-2:#F0F0EC;
  --fg:#17191C;
  --fg-muted:#5D6268;
  --fg-subtle:#8A8F95;
  --line:#E4E4DD;

  /* Acento de marca */
  --accent:#0C6B60;
  --accent-strong:#095349;
  --accent-soft:#E6F1EF;
  --accent-ink:#FFFFFF;
  --accent-on-dark:var(--accent);   /* variante legible sobre banda oscura */

  /* Banda oscura */
  --dark-bg:#17191C;
  --dark-fg:#F7F7F4;
  --dark-muted:#A2A8AD;
  --dark-line:rgba(247,247,244,.13);

  /* Tipografía */
  --font-display:"Helvetica Neue",Arial,sans-serif;
  --font-body:"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  /* Radios */
  --r-lg:18px;
  --r-md:12px;
  --r-sm:9px;
  --r-pill:999px;

  /* Métrica */
  --gut:clamp(20px,5vw,56px);
  --max:1100px;
  --pad:clamp(60px,7.5vw,116px);
}

/* ---------- base ---------- */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:var(--font-body);
  font-size:clamp(15.5px,1vw,16.5px);
  line-height:1.66;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:600;
  letter-spacing:-.018em;text-wrap:balance}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd{margin:0}
img{max-width:100%;display:block}
a{color:inherit}
:where(a,button):focus-visible{outline:2px solid var(--accent);outline-offset:3px}

h2{font-size:clamp(1.7rem,3.6vw,2.6rem);line-height:1.15}
h3{font-size:1.02rem;letter-spacing:-.01em}

/* ---------- estructura ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding-inline:var(--gut)}
section{padding-block:var(--pad)}
.stack{display:flex;flex-direction:column;gap:clamp(18px,2.2vw,26px)}
.stack-sm{display:flex;flex-direction:column;gap:12px}
.rule{height:1px;background:var(--line);border:0;margin:0}

.dark{background:var(--dark-bg);color:var(--dark-fg)}
.dark .rule{background:var(--dark-line)}
.surface{background:var(--surface);border-block:1px solid var(--line)}

/* ---------- texto ---------- */
.lede{font-size:clamp(1rem,1.2vw,1.12rem);color:var(--fg-muted);
  max-width:56ch;line-height:1.72}
.dark .lede{color:var(--dark-muted)}
.fine{font-size:.8rem;color:var(--fg-subtle);line-height:1.7;max-width:70ch}

/* Etiqueta de sección — píldora (por defecto) */
.eyebrow{
  display:inline-flex;align-items:center;gap:.55em;align-self:flex-start;
  font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;
  color:var(--accent);background:var(--accent-soft);
  padding:.45em .9em;border-radius:var(--r-pill)
}
.dark .eyebrow{color:var(--accent-on-dark);
  background:color-mix(in srgb,var(--accent-on-dark) 18%,transparent)}

/* Variante de filete, para identidades editoriales */
.eyebrow--rule{background:none;padding:0;border-radius:0;letter-spacing:.2em}
.eyebrow--rule::before{content:"";width:24px;height:1px;background:currentColor;
  flex:none;opacity:.8}

/* ---------- botones ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;align-self:flex-start;
  font-family:var(--font-body);font-size:.9rem;font-weight:600;
  text-decoration:none;cursor:pointer;
  padding:.85em 1.5em;border-radius:var(--r-pill);
  border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),
             box-shadow .25s ease,background .25s ease,border-color .25s ease
}
.btn:hover{transform:translateY(-2px);
  background:var(--accent-strong);border-color:var(--accent-strong);
  box-shadow:0 14px 28px -14px color-mix(in srgb,var(--accent) 80%,transparent)}
.btn .arw{transition:transform .25s cubic-bezier(.2,.7,.3,1)}
.btn:hover .arw{transform:translateX(4px)}
.btn-sm{font-size:.82rem;padding:.65em 1.2em}

.btn-ghost{background:transparent;color:var(--fg);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface);border-color:var(--fg-subtle);
  box-shadow:none;color:var(--fg)}
.dark .btn-ghost{color:var(--dark-fg);border-color:var(--dark-line)}
.dark .btn-ghost:hover{background:transparent;
  border-color:var(--accent-on-dark);color:var(--accent-on-dark)}

/* ---------- tarjetas ---------- */
.cards{display:grid;gap:clamp(14px,1.6vw,18px)}
@media(min-width:680px){.cards.c3{grid-template-columns:repeat(3,1fr)}}
@media(min-width:620px){.cards.c2{grid-template-columns:repeat(2,1fr)}}
@media(min-width:620px){.cards.c4{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.cards.c4{grid-template-columns:repeat(4,1fr)}}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(22px,2.4vw,28px);display:flex;flex-direction:column;gap:11px;
  transition:transform .3s cubic-bezier(.2,.7,.3,1),box-shadow .3s ease
}
.card:hover{transform:translateY(-3px);
  box-shadow:0 18px 34px -26px color-mix(in srgb,var(--fg) 45%,transparent)}
.card p{font-size:.91rem;color:var(--fg-muted);line-height:1.6}
.dark .card{background:color-mix(in srgb,var(--dark-fg) 5%,var(--dark-bg));
  border-color:var(--dark-line)}
.dark .card p{color:var(--dark-muted)}

/* Icono de tarjeta */
.card .ic,.ic{
  width:40px;height:40px;border-radius:var(--r-md);background:var(--accent-soft);
  display:grid;place-items:center;flex:none
}
.ic svg{width:20px;height:20px;stroke:var(--accent);fill:none;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round}
.dark .ic{background:color-mix(in srgb,var(--accent-on-dark) 18%,transparent)}
.dark .ic svg{stroke:var(--accent-on-dark)}

/* ---------- barra superior ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--bg) 90%,transparent);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding-block:13px}

/* ---------- pie ---------- */
footer{background:var(--dark-bg);color:var(--fg-subtle);border-top:1px solid var(--dark-line)}
footer .wrap{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  padding-block:22px;font-size:.72rem;letter-spacing:.06em}

/* ---------- desbordes controlados ---------- */
.scroll-x{overflow-x:auto}

/* ---------- apariciones al hacer scroll ---------- */
.rv{opacity:0;transform:translateY(18px);
  transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rv.on{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}