/* ============================================================================
   BASE — reset ligero, tipografía y layout primitives
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.6;
  letter-spacing: 0;
  color: var(--c-text);
  background: var(--c-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
/* Fondo INTERACTIVO: el cursor mueve dos spotlights pastel (índigo + cian)
   que tiñen el fondo claro como liquid-glass. Las CSS vars --mx/--my las
   actualiza JS (assets/js/cursor-bg.js) con interpolación suave.
   Sin neón, sin cyberpunk: pasteles muy translúcidos sobre un blanco con
   degradado diagonal y rejilla técnica de tinta muy clara. */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(520px circle at var(--mx, 50%) var(--my, 50%),
                    var(--aurora-1), transparent 60%),
    radial-gradient(640px circle at calc(100% - var(--mx, 50%)) calc(100% - var(--my, 50%)),
                    var(--aurora-2), transparent 65%);
  transition: background 0.25s ease;
}
:root[data-theme="dark"] body::before {
  background:
    radial-gradient(520px circle at var(--mx, 50%) var(--my, 50%),
                    var(--aurora-1), transparent 60%),
    radial-gradient(640px circle at calc(100% - var(--mx, 50%)) calc(100% - var(--my, 50%)),
                    var(--aurora-2), transparent 65%);
}
/* Solo una viñeta inferior MUY suave. Sin rejilla. */
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(120% 80% at 50% 100%, transparent 75%, rgba(15,23,42,.04) 100%);
}
@media (prefers-reduced-motion: reduce) {
  body::before { transition: none; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--c-gold) 35%, transparent); border-radius: 999px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: color-mix(in srgb, var(--c-gold) 55%, transparent); background-clip: content-box; }
img, svg, canvas { display: block; max-width: 100%; }
.ico { display: inline-block; vertical-align: -0.14em; width: 1em; height: 1em; flex: none; }
[data-ic] { display: inline-flex; align-items: center; }
a { color: var(--c-gold-soft); text-decoration: none; transition: color .15s; }
a:hover { color: var(--c-gold); }
/* Foco de teclado visible en TODO interactivo (WCAG 2.4.7). */
:focus-visible { outline: 2px solid var(--c-gold-soft); outline-offset: 2px; border-radius: 4px; }
:where(button, a, input, select, textarea, [tabindex]):focus-visible { outline: 2px solid var(--c-gold-soft); outline-offset: 2px; }
h1,h2,h3,h4 { font-family: var(--font-display); line-height: 1.15; font-weight: 700; letter-spacing: -.015em; }
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
p { color: var(--c-text-soft); line-height: 1.68; }
p + p { margin-top: .85em; }
small { color: var(--c-text-muted); }
ul, ol { color: var(--c-text-soft); padding-left: 1.3em; line-height: 1.68; }
li + li { margin-top: .4em; }
code, kbd { font-family: var(--font-mono); font-size: .9em; background: var(--c-surface-2); padding: .1em .4em; border-radius: 4px; }
hr { border: none; border-top: 1px solid var(--c-border); margin: var(--sp-6) 0; }
::selection { background: var(--c-gold); color: var(--c-on-gold); }

/* Layout */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--sp-5); }
.section { padding-block: var(--sp-10); }
.grid { display: grid; gap: var(--sp-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.flex { display: flex; gap: var(--sp-4); }
.flex-between { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4); }
.center { text-align: center; }
.muted { color: var(--c-text-muted); }
.gold-text { color: var(--c-gold); }
.eyebrow { text-transform: uppercase; letter-spacing: .15em; font-size: var(--fs-xs); color: var(--c-gold-soft); font-weight: 700; }

@media (max-width: 820px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  :root { --fs-3xl: 2.2rem; --fs-2xl: 1.7rem; }
}

/* Utilidades de aparición */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(16px); animation: reveal .7s forwards; }
  @keyframes reveal { to { opacity: 1; transform: none; } }
  /* aparición al hacer scroll (IntersectionObserver añade .seen) */
  .rise { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
  .rise.seen { opacity: 1; transform: none; }
}