/* Web de descarga del TibuStudio Launcher: mismo sistema "abismo" que el launcher. */
:root {
  --abismo: #06101f; --fosa: #0b1830; --fosa-2: #11223f; --fosa-3: #182d52;
  --linea: rgba(140, 180, 255, .12); --linea-2: rgba(140, 180, 255, .24);
  --texto: #e8eefa; --texto-2: #9aaccb; --texto-3: #6a7ea2;
  --aleta: #2f7cf6; --aleta-2: #5aa2ff; --espuma: #7fe0c9; --arena: #f2c46d;
  --display: "Bricolage Grotesque", "Figtree", system-ui, sans-serif;
  --ui: "Figtree", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--texto); font: 16px/1.6 var(--ui); -webkit-font-smoothing: antialiased; overflow-x: hidden;
  background: linear-gradient(180deg, #0b1d39 0, var(--abismo) 720px, #040b17 100%); background-color: var(--abismo); }
a { color: var(--aleta-2); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--aleta-2); outline-offset: 3px; border-radius: 6px; }
img { max-width: 100%; display: block; }
.envoltorio { width: min(1160px, 100% - 40px); margin-inline: auto; }

/* luz entrando desde la superficie, solo arriba */
.superficie { position: absolute; inset: 0 0 auto; height: 760px; overflow: hidden; pointer-events: none; z-index: 0; }
.superficie::before { content: ""; position: absolute; inset: -10% -20% 0; background: repeating-linear-gradient(100deg, transparent 0 70px, rgba(140, 190, 255, .05) 70px 105px, transparent 105px 190px);
  filter: blur(7px); -webkit-mask-image: linear-gradient(180deg, #000 10%, transparent 90%); mask-image: linear-gradient(180deg, #000 10%, transparent 90%); animation: rayos 9s ease-in-out infinite alternate; }
@keyframes rayos { to { transform: translateX(60px); } }

/* ---------- cabecera ---------- */
.barra { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.marca { display: flex; align-items: center; gap: 10px; font: 700 19px var(--display); color: var(--texto); }
.marca img { height: 30px; }
.marca:hover { text-decoration: none; }
.barra nav { display: flex; gap: 6px; align-items: center; }
.barra nav a { color: var(--texto-2); font-weight: 600; font-size: 15px; padding: 8px 12px; border-radius: 8px; }
.barra nav a:hover { color: var(--texto); background: var(--fosa-2); text-decoration: none; }
.barra nav a.discord { color: #fff; background: #5865f2; display: inline-flex; gap: 8px; align-items: center; }
.barra nav a.discord:hover { background: #6a75f5; }
.barra svg { width: 18px; height: 18px; fill: currentColor; }

/* ---------- portada ---------- */
.portada { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 56px; align-items: center; padding: 56px 0 96px; }
.portada h1 { font: 750 clamp(40px, 5.4vw, 66px)/1 var(--display); letter-spacing: -.035em; margin: 0 0 20px; text-wrap: balance; }
.portada .entradilla { color: #c3d0e8; font-size: 18px; max-width: 46ch; margin: 0 0 32px; }

.descarga { display: inline-flex; align-items: center; gap: 14px; padding: 0 28px 0 22px; height: 64px; border-radius: 14px; border: 0; cursor: pointer; color: #fff; text-align: left;
  background: linear-gradient(180deg, #3f8bff, var(--aleta) 55%, #2368df); box-shadow: 0 1px 0 rgba(255, 255, 255, .25) inset, 0 14px 34px rgba(47, 124, 246, .38); transition: transform .12s, filter .15s; font: inherit; }
.descarga:hover { filter: brightness(1.08); text-decoration: none; }
.descarga:active { transform: translateY(1px); }
.descarga svg { width: 26px; height: 26px; fill: currentColor; flex-shrink: 0; }
.descarga b { display: block; font: 700 18px/1.2 var(--display); }
.descarga small { display: block; font-size: 13px; opacity: .8; font-variant-numeric: tabular-nums; }
.otras { margin: 16px 0 0; color: var(--texto-2); font-size: 14.5px; }
.otras a { font-weight: 600; }
.otras .sep { color: var(--texto-3); margin: 0 6px; }

/* la captura del launcher dentro de su ventana, con el tiburon nadando alrededor */
.escena { position: relative; }
.ventana { position: relative; border-radius: 14px; overflow: hidden; border: 1px solid var(--linea-2); background: var(--fosa);
  box-shadow: 0 40px 80px rgba(1, 5, 14, .7), 0 0 0 1px rgba(0, 0, 0, .3); transform: perspective(1400px) rotateY(-7deg) rotateX(2deg); transform-origin: left center; }
.ventana img { width: 100%; height: auto; aspect-ratio: 1280 / 780; }
.nadador { position: absolute; left: 50%; top: 50%; width: 0; height: 0; z-index: 3; pointer-events: none; }
.nadador img { position: absolute; max-width: none; width: 190px; left: -95px; top: 150px; filter: drop-shadow(0 14px 20px rgba(0, 0, 0, .5)); }
.burbujas i { position: fixed; z-index: 3; border-radius: 50%; border: 1.5px solid rgba(190, 220, 255, .55); background: rgba(190, 220, 255, .08); pointer-events: none; }

/* ---------- secciones ---------- */
section { position: relative; z-index: 1; padding: 80px 0; border-top: 1px solid var(--linea); }
h2 { font: 700 clamp(28px, 3.4vw, 38px)/1.1 var(--display); letter-spacing: -.025em; margin: 0 0 14px; }
.intro-seccion { color: var(--texto-2); font-size: 17px; max-width: 58ch; margin: 0 0 40px; }

.ventajas { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 56px; }
.ventaja { display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--linea); }
.ventaja svg { width: 26px; height: 26px; fill: var(--aleta-2); margin-top: 3px; }
.ventaja b { display: block; font: 650 18px var(--display); margin-bottom: 4px; }
.ventaja p { margin: 0; color: var(--texto-2); }

.pestanas { display: inline-flex; gap: 4px; padding: 4px; background: var(--fosa); border: 1px solid var(--linea); border-radius: 12px; margin-bottom: 32px; }
.pestanas button { border: 0; background: none; color: var(--texto-2); font: 600 15px var(--ui); padding: 9px 18px; border-radius: 9px; cursor: pointer; display: inline-flex; gap: 8px; align-items: center; }
.pestanas button svg { width: 16px; height: 16px; fill: currentColor; }
.pestanas button[aria-selected="true"] { background: var(--texto); color: var(--abismo); }
.pasos { list-style: none; counter-reset: paso; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.pasos li { counter-increment: paso; position: relative; padding: 22px 20px 22px; border-radius: 14px; background: var(--fosa); border: 1px solid var(--linea); }
.pasos li::before { content: counter(paso); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: rgba(47, 124, 246, .16); color: var(--aleta-2); font: 700 16px var(--display); margin-bottom: 14px; }
.pasos li > b { display: block; font: 650 17px var(--display); margin-bottom: 6px; }
.pasos p { margin: 0; color: var(--texto-2); font-size: 15px; }
.pasos code, .faq code { font: 13px "Cascadia Code", Consolas, monospace; background: var(--abismo); border: 1px solid var(--linea); border-radius: 6px; padding: 1px 6px; color: #cfe0ff; white-space: nowrap; }

.requisitos { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--linea); border-radius: 14px; overflow: hidden; margin: 0; }
.requisitos div { padding: 22px 24px; background: var(--fosa); }
.requisitos div + div { border-left: 1px solid var(--linea); }
.requisitos dt { font: 650 17px var(--display); margin-bottom: 6px; }
.requisitos dd { margin: 0; color: var(--texto-2); font-size: 15px; }

.faq details, .faq h2 { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--linea); }
.faq summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; position: relative; font: 650 18px var(--display); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 8px; top: 50%; width: 10px; height: 10px; border-right: 2px solid var(--texto-2); border-bottom: 2px solid var(--texto-2); transform: translateY(-70%) rotate(45deg); transition: transform .2s; }
.faq details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq summary:hover { color: #fff; }
.faq details p { margin: 0 0 20px; color: var(--texto-2); max-width: 70ch; }

footer { position: relative; z-index: 1; border-top: 1px solid var(--linea); padding: 34px 0 48px; color: var(--texto-3); font-size: 14px; }
footer .envoltorio { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

/* ---------- aviso tras pulsar descargar ---------- */
#gracias { position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; background: rgba(2, 7, 16, .72); padding: 20px; }
#gracias[hidden] { display: none; }
.caja-gracias { width: min(560px, 100%); background: var(--fosa); border: 1px solid var(--linea-2); border-radius: 18px; padding: 30px; box-shadow: 0 30px 70px rgba(1, 5, 14, .7); animation: subir .25s cubic-bezier(.2, .7, .2, 1); }
@keyframes subir { from { opacity: 0; transform: translateY(10px) scale(.98); } }
.caja-gracias h3 { font: 700 26px/1.15 var(--display); letter-spacing: -.02em; margin: 0 0 8px; }
.caja-gracias > p { color: var(--texto-2); margin: 0 0 20px; }
.caja-gracias ol { margin: 0 0 22px; padding-left: 22px; color: #d5def0; }
.caja-gracias li { margin-bottom: 8px; }
.caja-gracias li b { color: #fff; }
.pie-gracias { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 14px; color: var(--texto-2); }
.boton-sec { border: 1px solid var(--linea-2); background: var(--fosa-2); color: var(--texto); font: 600 15px var(--ui); padding: 10px 18px; border-radius: 10px; cursor: pointer; }
.boton-sec:hover { background: var(--fosa-3); }
.barra-progreso { height: 4px; border-radius: 2px; background: var(--fosa-3); overflow: hidden; margin: 0 0 22px; }
.barra-progreso i { display: block; height: 100%; width: 40%; background: linear-gradient(90deg, var(--aleta), var(--aleta-2)); border-radius: 2px; animation: cargar 1.2s ease-in-out infinite; }
@keyframes cargar { from { transform: translateX(-100%); } to { transform: translateX(260%); } }

/* ---------- movil ---------- */
@media (max-width: 960px) {
  .portada { grid-template-columns: 1fr; gap: 44px; padding: 28px 0 70px; }
  .ventana { transform: none; }
  .ventajas { grid-template-columns: 1fr; }
  .pasos { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .requisitos { grid-template-columns: 1fr; }
  .requisitos div + div { border-left: 0; border-top: 1px solid var(--linea); }
}
@media (max-width: 560px) {
  .barra nav a:not(.discord) { display: none; }
  .pasos { grid-template-columns: 1fr; }
  .descarga { width: 100%; }
  section { padding: 60px 0; }
  .nadador img { width: 130px; left: -65px; top: 100px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}
.pasos p b { color: #fff; font-weight: 700; }