/* G-Strata Instruments · estilos compartidos (SEMq-1, Ciencia y Validación, Reconocimiento y Ferias) */
:root {
  --k: 1;
  --abyss: #060d1a;
  --deep:  #0a1528;
  --navy:  #10213d;
  --steel: #1b3150;
  --semq:  #1470b8;
  --signal:#35c4ee;
  --ice:   #e9f1fa;
  --mist:  #93a6bf;
  --sand:  #c9a46a;
  --v1:    #ff4d5e;      /* dipolo V1 */
  --v2:    #3ddc84;      /* dipolo V2 */
  --line: rgba(233, 241, 250, .12);
  --glass-bg: rgba(255, 255, 255, .07);
  --glass-br: rgba(255, 255, 255, .18);
  --font-display: "Exo 2", "Arial Narrow", system-ui, sans-serif;
  --font-body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-data: "Century Gothic", "CenturyGothic", "Questrial", "AppleGothic", "URW Gothic", sans-serif;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
  --maxw: 1240px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--abyss); color: var(--ice); font-family: var(--font-body); font-size: calc(17px * var(--k)); line-height: 1.6; overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--abyss); }
a { color: inherit; }
img { max-width: 100%; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; margin: 0; line-height: 1.05; letter-spacing: -.005em; }
p { margin: 0; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }
.eyebrow { font-family: var(--font-data); font-size: calc(12.5px * var(--k)); letter-spacing: .2em; text-transform: uppercase; color: var(--mist); }
.eyebrow b { color: var(--signal); font-weight: 700; }
.h2 { font-size: clamp(calc(30px * var(--k)), 4vw, calc(54px * var(--k))); font-weight: 800; text-transform: uppercase; margin-top: 12px; }
.head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: 44px; }
.head > p { color: var(--mist); }
@media (max-width: 900px) { .head { grid-template-columns: 1fr; gap: 16px; } }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
section { scroll-margin-top: 76px; }

/* ---------- Cristal ---------- */
.glass { position: relative; background: var(--glass-bg); border: 1px solid var(--glass-br); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); box-shadow: 0 8px 32px rgba(0, 0, 0, .28); border-radius: 18px; }

/* ---------- Botones ---------- */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; font-family: var(--font-data); font-weight: 700; font-size: calc(14px * var(--k)); letter-spacing: .1em; text-transform: uppercase; text-decoration: none; border: 1px solid rgba(233, 241, 250, .5); color: var(--ice); background: rgba(255, 255, 255, .04); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); cursor: pointer; transition: background .2s, color .2s, border-color .2s, transform .2s; border-radius: 999px; }
.btn:hover { background: var(--ice); color: var(--abyss); }
.btn.primary { background: linear-gradient(135deg, #2a8fd6, var(--semq)); border-color: rgba(255, 255, 255, .3); color: #fff; box-shadow: 0 10px 30px -12px rgba(53, 196, 238, .7), inset 0 1px 0 rgba(255, 255, 255, .35); }
.btn.primary:hover { background: var(--signal); border-color: var(--signal); color: var(--abyss); }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; font-family: var(--font-data); font-size: calc(12px * var(--k)); letter-spacing: .1em; text-transform: uppercase; color: var(--mist); background: rgba(255, 255, 255, .03); }

/* ---------- Barra superior con menú de cristal ---------- */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; padding: 10px 0; transition: background .3s; }
.top.scrolled { background: linear-gradient(180deg, rgba(6, 13, 26, .75), rgba(6, 13, 26, 0)); }
.top .wrap { display: flex; align-items: center; gap: 16px; max-width: 1560px; }
.top .brand img { height: 30px; width: auto; display: block; }
.top nav.glass { display: flex; align-items: center; gap: 2px; margin-left: auto; padding: 5px; border-radius: 999px; }
.top nav a { position: relative; z-index: 1; text-decoration: none; color: rgba(233, 241, 250, .82); font-family: var(--font-data); font-size: calc(13px * var(--k)); letter-spacing: .02em; padding: 8px 12px; border-radius: 999px; white-space: nowrap; transition: background .2s, color .2s; }
.top nav a:hover { color: #fff; background: rgba(255, 255, 255, .1); }
.top nav a.on { color: #fff; background: rgba(53, 196, 238, .18); box-shadow: inset 0 0 0 1px rgba(53, 196, 238, .45); }
.top nav a.cta { background: linear-gradient(135deg, #2a8fd6, var(--semq)); color: #fff; font-weight: 700; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .35); }
.top nav a.cta:hover { background: var(--signal); color: var(--abyss); }
.top nav a.ext::after { content: "↗"; font-size: calc(10px * var(--k)); margin-left: 4px; opacity: .6; }
.menu-btn { display: none; margin-left: auto; width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--glass-br); color: var(--ice); cursor: pointer; font-size: calc(18px * var(--k)); }
.trace { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; }
.trace i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--semq), var(--signal)); box-shadow: 0 0 12px var(--signal); }
@media (max-width: 1320px) { .top nav a { padding: 8px 9px; font-size: calc(12.5px * var(--k)); } }
@media (max-width: 1180px) {
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
  .top nav.glass { display: none; position: absolute; top: calc(100% + 6px); right: var(--gutter-r); left: var(--gutter-l); flex-direction: column; align-items: stretch; border-radius: 20px; padding: 10px; background: rgba(10, 21, 40, .82); }
  .top nav.glass.open { display: flex; }
  .top nav a { font-size: calc(15px * var(--k)); padding: 12px 14px; }
}

/* ---------- Medidor de profundidad ---------- */
.depth { position: fixed; z-index: 40; right: max(14px, env(safe-area-inset-right, 0px)); top: 50%; transform: translateY(-50%); display: flex; flex-direction: column; align-items: flex-end; gap: 8px; font-family: var(--font-data); font-size: calc(11px * var(--k)); color: var(--mist); pointer-events: none; }
.depth .rule { width: 10px; height: 34vh; background: repeating-linear-gradient(180deg, var(--line) 0 1px, transparent 1px 10px); position: relative; border-right: 1px solid var(--line); }
.depth .rule i { position: absolute; right: -1px; top: 0; width: 18px; height: 2px; background: var(--signal); box-shadow: 0 0 10px var(--signal); }
.depth b { color: var(--ice); font-weight: 700; font-variant-numeric: tabular-nums; }
@media (max-width: 1060px) { .depth { display: none; } }

/* ---------- Aparición al hacer scroll ---------- */
.rv { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2, .7, .2, 1), transform .8s cubic-bezier(.2, .7, .2, 1); }
.rv.in { opacity: 1; transform: none; }
.rv.d1 { transition-delay: .08s; } .rv.d2 { transition-delay: .16s; } .rv.d3 { transition-delay: .24s; } .rv.d4 { transition-delay: .32s; } .rv.d5 { transition-delay: .4s; }

/* ---------- Carrusel: imagen completa sobre fondo difuminado ---------- */
.carousel { position: relative; }
.car-track { display: grid; grid-auto-flow: column; grid-auto-columns: 100%; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; border-radius: 18px; }
.car-track::-webkit-scrollbar { display: none; }
.car-slide { position: relative; margin: 0; scroll-snap-align: start; aspect-ratio: 16 / 9; overflow: hidden; background: #050b16; cursor: zoom-in; }
.car-slide .bg { position: absolute; inset: -30px; background-size: cover; background-position: center; filter: blur(28px) brightness(.45); }
.car-slide img { position: relative; display: block; width: 100%; height: 100%; object-fit: contain; }
.car-slide figcaption { position: absolute; left: 14px; bottom: 14px; right: 14px; max-width: 640px; padding: 12px 16px; border-radius: 14px; font-size: calc(14.5px * var(--k)); line-height: 1.45; color: var(--ice); background: rgba(6, 13, 26, .55); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border: 1px solid rgba(255, 255, 255, .14); }
.car-slide figcaption b { display: block; font-family: var(--font-data); font-size: calc(11.5px * var(--k)); letter-spacing: .14em; text-transform: uppercase; color: var(--signal); margin-bottom: 2px; }
.car-ui { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.car-ui button { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--glass-br); background: rgba(255, 255, 255, .05); color: var(--ice); font: 18px var(--font-data); cursor: pointer; flex: none; }
.car-ui button:hover { border-color: var(--signal); color: var(--signal); }
.car-dots { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.car-dots i { width: 22px; height: 3px; border-radius: 2px; background: rgba(233, 241, 250, .18); cursor: pointer; transition: background .2s, width .2s; }
.car-dots i.on { background: var(--signal); width: 34px; }
.car-count { font-family: var(--font-data); font-size: calc(13px * var(--k)); color: var(--mist); font-variant-numeric: tabular-nums; }
@media (max-width: 640px) { .car-slide { aspect-ratio: 4 / 3; } .car-slide figcaption { position: static; border-radius: 0; background: rgba(6, 13, 26, .9); } .car-slide { display: flex; flex-direction: column; aspect-ratio: auto; } .car-slide img { aspect-ratio: 4 / 3; height: auto; } }

/* visor a pantalla completa */
.lightbox { position: fixed; inset: 0; z-index: 90; display: none; align-items: center; justify-content: center; background: rgba(3, 7, 14, .92); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); padding: 24px; }
.lightbox.open { display: flex; }
.lightbox img { max-width: 100%; max-height: 86vh; border-radius: 10px; }
.lightbox p { position: absolute; left: 24px; right: 24px; bottom: 18px; text-align: center; color: var(--mist); font-size: calc(14px * var(--k)); }
.lightbox button { position: absolute; top: 16px; right: 16px; width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--glass-br); background: rgba(255, 255, 255, .06); color: #fff; font-size: calc(20px * var(--k)); cursor: pointer; }

/* ---------- Pie ---------- */
footer { padding-top: 44px; padding-bottom: 44px; border-top: 1px solid var(--line); color: var(--mist); font-size: calc(14px * var(--k)); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 20px 40px; align-items: center; justify-content: space-between; }
footer img { height: 34px; width: auto; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; font-family: var(--font-data); font-size: calc(13px * var(--k)); }
footer nav a { text-decoration: none; }
footer nav a:hover { color: var(--ice); }

/* pantallas grandes: el texto y el ancho útil crecen juntos (--k escala todos los font-size) */
@media (min-width: 1800px) { :root { --maxw: 1480px; --k: 1.12; } }
@media (min-width: 2500px) { :root { --maxw: 1800px; --k: 1.3; } }
@media (min-width: 3300px) { :root { --maxw: 2200px; --k: 1.55; } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; }
}