:root {
  --bg: #000000;
  --surface: #181818;
  --line: #1f1f1f;
  --text: #ffffff;
  --text-2: #a3a3a3;
  --text-3: #6b6b6b;
  --accent: #ffc61a;
  --accent-hover: #ffd34f;
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --max: 1080px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Geist", system-ui, sans-serif;
  font-size: 16px;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { text-wrap: balance; margin: 0; font-weight: 600; }
p, li, summary { text-wrap: pretty; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 8px; }

.skip {
  position: absolute; left: 16px; top: -48px; z-index: 20;
  background: var(--accent); color: #000; padding: 8px 12px; border-radius: 8px;
  font-weight: 600; text-decoration: none;
}
.skip:focus { top: 16px; }

/* ── Barra superior ──────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
}
.topbar-inner {
  max-width: var(--max); margin: 0 auto; padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 600; }
.topbar nav { display: flex; align-items: center; gap: 24px; }
.topbar nav a:not(.btn) { color: var(--text-2); text-decoration: none; font-size: 14px; line-height: 20px; transition: color 300ms var(--ease); }
.topbar nav a:not(.btn):hover { color: var(--text); }
.topbar nav i { font-size: 20px; display: block; }
.brand img { width: 32px; height: 32px; }
.topbar nav a.lang {
  padding: 4px 8px; border: 1px solid #313131; border-radius: 8px;
  font-size: 12px; line-height: 16px; font-weight: 600; letter-spacing: 0.04em;
}
.topbar nav a.lang:hover { border-color: #555; }

/* ── Botones ─────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 12px; border: 1px solid transparent;
  background: var(--accent); color: #000;
  font-size: 16px; line-height: 24px; font-weight: 600; text-decoration: none;
  transition: background 300ms var(--ease), transform 300ms var(--ease), border-color 300ms var(--ease);
}
.btn:hover { background: var(--accent-hover); transform: translateY(-2px); }
.btn:active { transform: scale(0.98); }
.btn i { font-size: 20px; }
.btn-sm { padding: 8px 16px; border-radius: 9999px; font-size: 14px; line-height: 20px; background: transparent; color: var(--text); border-color: #444; }
.btn-sm:hover { background: #fff; color: #000; }
.btn-sm[data-download] { background: transparent; color: var(--text); border-color: #444; }
.btn-ghost { background: transparent; color: var(--text); border-color: #313131; }
.btn-ghost:hover { background: var(--surface); }

/* Botones de descarga: blancos; al pasar el mouse se ponen amarillos y la flecha salta; tras el clic quedan amarillos */
.btn[data-download] { background: #fff; color: #000; border-color: #fff; border-radius: 9999px; }
.btn[data-download]:hover, .btn[data-download].done {
  background: var(--accent); border-color: var(--accent); color: #000;
  box-shadow: 0 8px 32px rgba(255, 198, 26, 0.35);
}

/* ── Hero ────────────────────────────────────────── */
.hero {
  max-width: var(--max); margin: 0 auto; padding: 96px 24px 80px;
  display: grid; grid-template-columns: 1fr auto; gap: 64px; align-items: center;
}
.eyebrow { margin: 0 0 24px; color: var(--text-2); font-size: 14px; line-height: 20px; }
h1 {
  max-width: 680px;
  font-size: 48px; line-height: 1.1; letter-spacing: -0.03em;
  background: linear-gradient(90deg, #ffffff, #9b9b9b);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.wordmark {
  font-size: 72px; line-height: 1; letter-spacing: -0.04em; font-weight: 700;
  background: none; color: var(--text);
}
.hero-sub {
  max-width: 680px; margin: 16px 0 0; font-size: 36px; line-height: 40px; font-weight: 600; letter-spacing: -0.02em;
  background: linear-gradient(90deg, #ffffff, #9b9b9b); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { max-width: 680px; margin: 24px 0 0; color: var(--text-2); font-size: 18px; line-height: 28px; }
.cta { margin-top: 40px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.meta { margin: 0; color: var(--text-3); font-size: 14px; line-height: 20px; }
/* Bandas de contraste a todo el ancho */
.band { background: var(--surface); box-shadow: 0 0 0 100vmax var(--surface); clip-path: inset(0 -100vmax); }

/* Fondo de color compartido (hero y recuadros) */
.stage, .shot {
  background:
    radial-gradient(60% 80% at 15% 20%, #7c3aed 0%, transparent 60%),
    radial-gradient(50% 70% at 85% 25%, #3b82f6 0%, transparent 60%),
    radial-gradient(60% 70% at 70% 95%, #f472b6 0%, transparent 60%),
    radial-gradient(45% 60% at 20% 95%, #ffc61a 0%, transparent 60%),
    #1f1235;
}

.hero-logo { width: 320px; height: 320px; }

/* ── Programa sobre el fondo de color ────────────── */
.showcase { max-width: var(--max); margin: 0 auto; padding: 0 24px 64px; }
.stage { display: grid; place-items: center; padding: 64px 24px; border-radius: 24px; }
.demo { display: block; width: 400px; height: auto; border-radius: 19px; box-shadow: 0 32px 64px rgba(0, 0, 0, 0.5); }
/* ── Lema ────────────────────────────────────────── */
.tagline { max-width: var(--max); margin: 0 auto; padding: 96px 24px; }
.words { max-width: 680px; margin: 0; font-size: 48px; line-height: 1.1; font-weight: 600; letter-spacing: -0.02em; }
.words span { color: rgba(255, 255, 255, 0.25); transition: color 700ms var(--ease); }
.words span.on { color: var(--text); }

/* ── Secciones ───────────────────────────────────── */
.section { max-width: var(--max); margin: 0 auto; padding: 80px 24px; }
.section h2 { font-size: 30px; line-height: 36px; margin-bottom: 48px; }

/* Recuadros iguales: la ventana del programa asoma desde abajo */
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tile { padding: 8px 8px 24px; border: 1px solid #272727; border-radius: 16px; background: #1f1f1f; }
.shot { aspect-ratio: 4 / 3; padding: 24px 24px 0; border-radius: 8px; display: flex; overflow: hidden; }
.shot .frame {
  flex: 1; position: relative; overflow: hidden;
  border-radius: 12px 12px 0 0; background: #100f1a; box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px #2c2a3a;
}
.shot video { position: absolute; left: 0; top: 0; width: 100%; height: auto; transform: translateY(calc(-1 * var(--y))); }
.shot { text-decoration: none; }
.shot img { position: absolute; left: 0; top: 0; width: 100%; height: auto; }

/* Variaciones suaves del fondo de color en algunos recuadros */
.tile:nth-child(2) .shot {
  background:
    radial-gradient(60% 80% at 85% 15%, #ec4899 0%, transparent 60%),
    radial-gradient(55% 70% at 10% 30%, #7c3aed 0%, transparent 60%),
    radial-gradient(60% 70% at 30% 100%, #f59e0b 0%, transparent 60%),
    #2a1230;
}
.tile:nth-child(4) .shot {
  background:
    radial-gradient(60% 80% at 20% 15%, #0ea5e9 0%, transparent 60%),
    radial-gradient(55% 70% at 90% 40%, #8b5cf6 0%, transparent 60%),
    radial-gradient(60% 70% at 60% 100%, #14b8a6 0%, transparent 60%),
    #101a33;
}
.tile:nth-child(6) .shot {
  background:
    radial-gradient(60% 80% at 80% 20%, #22c55e 0%, transparent 60%),
    radial-gradient(55% 70% at 10% 70%, #3b82f6 0%, transparent 60%),
    radial-gradient(50% 60% at 50% 110%, #a855f7 0%, transparent 60%),
    #0f1f22;
}.tile h3 { margin: 24px 16px 0; font-size: 18px; line-height: 28px; }
.tile p { margin: 8px 16px 0; color: var(--text-2); }

/* ── Ventana de instalación ──────────────────────── */
.install {
  width: min(520px, calc(100% - 32px)); padding: 40px; border: 1px solid #313131; border-radius: 24px;
  background: #181818; color: var(--text);
}
.install::backdrop { background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(8px); }
.install[open] { animation: pop 500ms var(--ease); }
@keyframes pop { from { opacity: 0; transform: translateY(24px) scale(0.98); } }
.install h2 { font-size: 24px; line-height: 32px; }
.install-close {
  position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; display: grid; place-items: center;
  border: 0; border-radius: 9999px; background: transparent; color: var(--text-2); cursor: pointer; font-size: 20px;
}
.install-close:hover { background: #272727; color: var(--text); }
.install-steps { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 24px; }
.install-steps li { display: flex; gap: 16px; opacity: 0; animation: step-in 600ms var(--ease) forwards; }
.install-steps li:nth-child(2) { animation-delay: 150ms; }
.install-steps li:nth-child(3) { animation-delay: 300ms; }
@keyframes step-in { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
.install-icon {
  flex-shrink: 0; width: 48px; height: 48px; display: grid; place-items: center;
  border-radius: 12px; background: #272727; color: var(--accent); font-size: 24px;
}
.install-steps li:nth-child(1) .install-icon i { animation: bob 1.6s ease-in-out infinite; }
.install-steps li:nth-child(2) .install-icon i { animation: pulse 1.6s ease-in-out infinite; }
.install-steps li:nth-child(3) .install-icon i { animation: spin 2.4s var(--ease) infinite; }
@keyframes bob { 50% { transform: translateY(4px); } }
@keyframes pulse { 50% { transform: scale(1.15); } }
@keyframes spin { to { transform: rotate(360deg); } }
.install-steps h3 { font-size: 16px; line-height: 24px; }
.install-steps p { margin: 4px 0 0; color: var(--text-2); font-size: 14px; line-height: 20px; }
.install-steps b { color: var(--text); font-weight: 600; }
.install-foot { margin: 32px 0 0; color: var(--text-3); font-size: 14px; line-height: 20px; }
.install-foot a { color: var(--accent); }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.num { color: var(--accent); font-size: 14px; line-height: 20px; font-weight: 600; }
.steps h3 { margin-top: 8px; font-size: 18px; line-height: 28px; }
.steps p { margin: 8px 0 0; color: var(--text-2); }

.uses { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px 40px; }
.uses li { display: flex; align-items: center; gap: 12px; color: var(--text-2); }
.uses i { font-size: 24px; color: var(--text); flex-shrink: 0; }

.faq { max-width: 768px; }
.faq details + details { margin-top: 8px; }
.faq details { border-radius: 12px; transition: background 300ms var(--ease); }
.faq details[open], .faq details:hover { background: var(--surface); }
.faq summary {
  cursor: pointer; list-style: none; padding: 16px 24px;
  font-weight: 500; display: flex; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--text-3); font-size: 20px; transition: transform 300ms var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0; padding: 0 24px 24px; color: var(--text-2); }
.faq a { color: var(--accent); }

.final { text-align: center; padding-top: 96px; padding-bottom: 96px; }
.final h2 { margin-bottom: 12px; }
.final > p { margin: 0; color: var(--text-2); }
.final .cta { justify-content: center; }

.legal { max-width: 768px; }
.legal h1 { font-size: 36px; line-height: 40px; margin-bottom: 8px; }
.legal h2 { font-size: 20px; line-height: 28px; margin: 40px 0 12px; }
.legal p { color: var(--text-2); }
.legal a:not(.btn) { color: var(--accent); }
.legal .btn { margin-top: 32px; }

.notfound { min-height: 100vh; display: grid; place-content: center; justify-items: center; gap: 16px; }
.notfound h1 { font-size: 36px; line-height: 40px; }

/* ── Pie ─────────────────────────────────────────── */
.footer {
  max-width: var(--max); margin: 0 auto; padding: 32px 24px 48px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px;
  color: var(--text-3); font-size: 14px; line-height: 20px;
}
.footer p { margin: 0; }
.footer nav { display: flex; gap: 24px; }
.footer a { color: var(--text-2); text-decoration: none; }
.footer a:hover { color: var(--text); }

/* ── Aparición al hacer scroll ───────────────────── */
.reveal {
  opacity: 0; transform: translateY(64px); filter: blur(12px);
  transition: opacity 900ms var(--ease), transform 900ms var(--ease), filter 900ms var(--ease);
}
.reveal.in { opacity: 1; transform: none; filter: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; filter: none; transition: none; }
  .words span { color: var(--text); }
  .install-steps li, .install-icon i, .install[open] { animation: none !important; opacity: 1; }
  html { scroll-behavior: auto; }
}

/* ── Pantallas chicas ────────────────────────────── */
@media (max-width: 960px) {
  .hero-logo { width: 260px; height: 260px; }
  .tiles { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 64px 16px 48px; }
  .wordmark { font-size: 48px; }
  .hero-sub { font-size: 30px; line-height: 36px; }
  .hero-sub br { display: none; }
  h1 br, .lead br { display: none; }
  .words { font-size: 36px; line-height: 40px; }
  .hero-logo { display: none; }
  .stage { padding: 40px 16px; }
  .demo { width: 100%; max-width: 320px; }
  .install { padding: 32px 24px; }
  .topbar-inner, .tagline, .section, .showcase, .footer { padding-left: 16px; padding-right: 16px; }
  .steps, .uses { grid-template-columns: 1fr; }
  .tiles { grid-template-columns: 1fr; }
  .topbar nav a:not(.btn):not(.lang) { display: none; }
}