/* ---------- Preloader: una nebulosa que se forma ---------- */
.preloader {
  position: fixed; inset: 0; z-index: 300; display: grid; place-items: center; align-content: center; gap: 22px; overflow: hidden; color: #cfe3f7;
  background: radial-gradient(70% 60% at 50% 46%, #08182f 0%, #030a16 62%, #01040a 100%);
  opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .35s var(--ease), visibility 0s linear .35s;
}

/* Solo aparece si la carga se demora (shell.js le pone .is-shown); mientras tanto la página ya se está viendo debajo. */
.preloader.is-shown { opacity: 1; visibility: visible; pointer-events: auto; transition: opacity .25s var(--ease), visibility 0s; }
html:not(.preloading) .preloader:not(.is-done) { display: none; }
.preloader.is-done { opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .35s var(--ease), visibility 0s linear .35s; }
.preloader:not(.is-shown) * { animation-play-state: paused !important; }
html.pre-shown,
html.pre-shown body { overflow: hidden; }
.pre-stars { position: absolute; inset: 0; opacity: .9; animation: pre-fade .6s var(--ease) both; }
.pre-stars canvas { position: absolute; left: 0; top: 0; width: 100%; height: 100%; }
.pre-stars .ps2 { animation: cosmos-twinkle 5s steps(10, end) infinite alternate; }
@keyframes pre-fade { from { opacity: 0; } to { opacity: .9; } }
.pre-scene { position: relative; width: min(54vmin, 420px); aspect-ratio: 1; display: grid; place-items: center; }
.pre-gas { position: absolute; border-radius: 50%; opacity: 0; will-change: transform, opacity; animation: pre-gas 1.7s var(--ease) forwards, pre-spin 24s linear infinite; }
.pre-gas.g1 { inset: 4%; background: radial-gradient(closest-side, rgba(56, 182, 240, .75), rgba(56, 182, 240, 0)); animation-delay: .05s, 0s; }
.pre-gas.g2 { inset: 14% 0 6% 20%; background: radial-gradient(closest-side, rgba(27, 157, 184, .7), rgba(27, 157, 184, 0)); animation-delay: .25s, 0s; animation-duration: 1.7s, 34s; animation-direction: normal, reverse; }
.pre-gas.g3 { inset: 20% 22% 2% 4%; background: radial-gradient(closest-side, rgba(78, 214, 176, .6), rgba(78, 214, 176, 0)); animation-delay: .45s, 0s; animation-duration: 1.7s, 28s; }
.pre-gas.g4 { inset: 34%; background: radial-gradient(closest-side, rgba(246, 196, 88, .75), rgba(246, 196, 88, 0)); animation-delay: .65s, 0s; animation-duration: 1.7s, 40s; }
@keyframes pre-gas { 0% { opacity: 0; transform: scale(.25); } 55% { opacity: 1; } 100% { opacity: .9; transform: scale(1.08); } }
@keyframes pre-spin { to { rotate: 360deg; } }
.pre-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(150, 205, 255, .35); opacity: 0; animation: pre-ring 2.2s var(--ease) infinite; }
.pre-ring.r1 { inset: 30%; animation-delay: .5s; }
.pre-ring.r2 { inset: 30%; animation-delay: 1.2s; }
@keyframes pre-ring { 0% { opacity: .7; transform: scale(.45); } 100% { opacity: 0; transform: scale(2.2); } }
.pre-mark { position: relative; width: 22%; aspect-ratio: 1; opacity: 0; transform: scale(.4); animation: pre-mark .5s var(--ease) .3s forwards;  }
.pre-mark .logo { width: 100%; height: 100%; }
@keyframes pre-mark { to { opacity: 1; transform: scale(1); } }
.pre-text { position: relative; display: grid; gap: 14px; justify-items: center; text-align: center; padding-inline: 20px; }
.pre-title { font-weight: 700; letter-spacing: -.04em; font-size: clamp(22px, 3.4vw, 34px); color: #eaf3fc; margin: 0; }
.pre-stage { font: 500 11.5px/1.5 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: #8fb2d4; min-height: 3em; max-width: 46ch; margin: 0; }
.pre-bar { width: min(240px, 60vw); height: 2px; border-radius: 2px; background: rgba(150, 195, 240, .16); overflow: hidden; }
.pre-bar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #38B6F0, #4ED6B0, #F6C458); box-shadow: 0 0 12px #38B6F0; transition: width .28s linear; }
.pre-count { font: 600 11px/1 var(--mono); letter-spacing: .14em; color: #6f93b6; margin: 0; }
.pre-skip { position: absolute; bottom: max(18px, env(safe-area-inset-bottom)); left: 50%; transform: translateX(-50%); background: none; border: 0; color: #5f7f9f; font: 500 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; padding: 10px 14px; text-decoration: underline; text-underline-offset: 4px; }
.pre-skip:hover { color: #cfe3f7; }
@media (prefers-reduced-motion: reduce) {
  .preloader { display: none !important; }
  html.pre-shown,
  html.pre-shown body { overflow: auto; }
}