/* Radiux Landing Styles - moderno, accesible y performante */
/* Reset y tokens */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji"; line-height: 1.5; color: var(--fg); background: var(--bg); }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

:root {
  --bg: #0b1220;
  --fg: #e6edf3;
  --muted: #9aa5b1;
  --brand: #7c3aed; /* violeta */
  --brand-2: #0ea5e9; /* cielo */
  --accent: #ff2e63; /* fucsia */
  --surface: #0f172a;
  --card: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.12);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

[data-theme="light"]:root { --bg:#f7f9fc; --fg:#0f172a; --muted:#475569; --surface:#fff; --card:#fff; --border:rgba(0,0,0,0.08); }

.container { width: min(1100px, 92vw); margin: 0 auto; padding-inline: 16px; }
.site-header { position: sticky; top: 0; backdrop-filter: blur(8px); background: color-mix(in oklab, var(--bg) 80%, transparent); border-bottom: 1px solid var(--border); z-index: 10; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; position: relative; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.2px; }
.brand-text { font-size: clamp(18px, 1.8vw, 22px); }
.site-nav { display: inline-flex; align-items: center; gap: 10px; }
.nav-link { padding: 8px 10px; border-radius: 8px; color: var(--muted); }
.nav-link:hover { color: var(--fg); }

.btn { display: inline-flex; align-items: center; gap: 10px; padding: 10px 16px; min-height: 44px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); color: var(--fg); box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 12px 32px rgba(0,0,0,0.4); }
.btn.primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); border: none; }
.btn.secondary { background: color-mix(in oklab, var(--surface) 90%, transparent); }
.btn.ghost { background: transparent; border-color: var(--border); box-shadow: none; }

/* Glow neón sutil en botón primario */
.btn.primary:hover { box-shadow: 0 0 0 2px color-mix(in oklab, var(--brand-2) 45%, transparent), 0 0 18px color-mix(in oklab, var(--brand) 30%, transparent), 0 12px 32px rgba(0,0,0,0.45); }
.btn.primary:focus-visible { outline: none; box-shadow: 0 0 0 3px color-mix(in oklab, var(--brand-2) 40%, transparent), 0 0 18px color-mix(in oklab, var(--brand-2) 30%, transparent); }

/* Toggle de menú móvil (oculto en escritorio) */
.site-header .menu { display: none; }

.site-main { background:
  radial-gradient(1200px 500px at 10% -20%, color-mix(in oklab, var(--brand) 20%, transparent), transparent),
  radial-gradient(1200px 500px at 90% -20%, color-mix(in oklab, var(--accent) 18%, transparent), transparent),
  var(--bg);
}

.section { padding: clamp(40px, 8vw, 96px) 0; }

/* Fondos alternos por sección */
.section.striped { position: relative; background: linear-gradient(180deg,
  color-mix(in oklab, var(--surface) 98%, var(--bg)) 0%,
  color-mix(in oklab, var(--surface) 98%, var(--bg)) 100%
); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section.alt { position: relative; background: linear-gradient(180deg,
  color-mix(in oklab, var(--brand) 18%, var(--surface)) 0%,
  color-mix(in oklab, var(--brand) 18%, var(--surface)) 100%
); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section.striped::before { content:""; position:absolute; inset:0; pointer-events:none; background:
  radial-gradient(800px 300px at 95% -10%, color-mix(in oklab, var(--brand-2) 12%, transparent), transparent);
}
.section.alt::before { content:""; position:absolute; inset:0; pointer-events:none; background:
  radial-gradient(800px 300px at 5% -10%, color-mix(in oklab, var(--brand) 14%, transparent), transparent);
}

/* Contrastes más claros en tema claro */
@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] .section.striped { background: linear-gradient(180deg,
    color-mix(in oklab, var(--surface) 98%, var(--bg)) 0%,
    color-mix(in oklab, var(--surface) 98%, var(--bg)) 100%
  ); }
  :root[data-theme="auto"] .section.alt { background: linear-gradient(180deg,
    color-mix(in oklab, var(--brand-2) 16%, var(--surface)) 0%,
    color-mix(in oklab, var(--brand-2) 16%, var(--surface)) 100%
  ); }
}
/* Forzar las mismas reglas si el usuario fija tema claro */
[data-theme="light"] .section.striped { background: linear-gradient(180deg,
  color-mix(in oklab, var(--surface) 98%, var(--bg)) 0%,
  color-mix(in oklab, var(--surface) 98%, var(--bg)) 100%
); }
[data-theme="light"] .section.alt { background: linear-gradient(180deg,
  color-mix(in oklab, var(--brand-2) 16%, var(--surface)) 0%,
  color-mix(in oklab, var(--brand-2) 16%, var(--surface)) 100%
); }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: min(6vw, 40px); }
.hero-copy h1 { font-size: clamp(28px, 4.8vw, 52px); margin: 0 0 12px; letter-spacing: -0.02em; }
.lead { font-size: clamp(16px, 1.8vw, 20px); color: var(--muted); max-width: 65ch; }
.cta { margin-top: 20px; display: flex; gap: 12px; flex-wrap: wrap; }
.trust { margin-top: 18px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; color: var(--muted); }
.trust li { list-style: none; padding: 8px 12px; border: 1px solid var(--border); border-radius: 999px; background: color-mix(in oklab, var(--surface) 92%, transparent); text-align: center; }
.hero-art { display: grid; place-items: center; }
.mascot { filter: drop-shadow(0 20px 40px rgba(0,0,0,0.5)); transform: translateY(0); animation: float 6s ease-in-out infinite; }
@media (prefers-reduced-motion: reduce) { .mascot { animation: none; } }
@keyframes float { 0%{transform:translateY(0)} 50%{transform:translateY(-8px)} 100%{transform:translateY(0)} }

.features h2 { font-size: clamp(22px, 3.2vw, 36px); margin: 0 0 24px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { border: 1px solid var(--border); border-radius: 16px; background: var(--card); padding: 20px; box-shadow: var(--shadow); }
.card-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 12px; background: color-mix(in oklab, var(--brand-2) 18%, transparent); color: var(--brand-2); margin-bottom: 10px; }
.card h3 { margin: 0 0 6px; font-size: clamp(18px, 1.9vw, 22px); }
.card p { margin: 0; color: var(--muted); }

@media (max-width: 900px) { .hero-inner{grid-template-columns:1fr;}.cards{grid-template-columns:1fr;} .trust{grid-template-columns:1fr;} }

/* Rejillas tablet y responsive avanzado */
@media (max-width: 1024px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .mini { grid-template-columns: repeat(2, 1fr); }
  .trust { grid-template-columns: repeat(2, 1fr); }
}

/* Menú desplegable en móviles */
@media (max-width: 760px) {
  .site-header .menu { display: inline-flex; }
  .site-nav { display: none; position: absolute; top: calc(100% + 6px); right: 16px; left: 16px; flex-direction: column; gap: 8px; padding: 12px; border: 1px solid var(--border); background: var(--surface); border-radius: 12px; box-shadow: var(--shadow); }
  .site-header.open .site-nav { display: flex; }
  .site-nav .nav-link, .site-nav .btn { width: 100%; justify-content: center; }
}

.site-footer { border-top: 1px solid var(--border); background: color-mix(in oklab, var(--bg) 85%, transparent); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; color: var(--muted); }

/* Reveal animaciones con IntersectionObserver */
.fx-reveal { opacity: 0; transform: translateY(10px); transition: opacity .5s ease, transform .5s ease; }
.fx-reveal.in { opacity: 1; transform: translateY(0); }

/* Preferencias de color del sistema */
@media (prefers-color-scheme: light) { :root[data-theme="auto"] { --bg:#f7f9fc; --fg:#0f172a; --muted:#475569; --surface:#fff; --card:#fff; --border:rgba(0,0,0,0.08);} }

/* How it works */
.diagram { margin: 12px 0 18px; border: 1px solid var(--border); border-radius: 18px; overflow: hidden; box-shadow: var(--shadow); }
.diagram img { display: block; width: 100%; height: auto; }
.sublead { color: var(--muted); max-width: 70ch; margin: 8px 0 22px; font-size: clamp(15px, 1.6vw, 18px); }

/* Stepper visual */
.stepper { list-style: none; margin: 0 0 14px; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; counter-reset: step; }
.stepper li { position: relative; display: grid; place-items: center; text-align: center; padding: 18px 12px 14px; border: 1px solid var(--border); border-radius: 16px; background: var(--card); box-shadow: var(--shadow); }
.stepper li::after { content: ""; position: absolute; right: -6px; top: 50%; transform: translateY(-50%); width: 12px; height: 2px; background: color-mix(in oklab, var(--brand-2) 60%, var(--fg)); opacity: .6; }
.stepper li:last-child::after { display: none; }
.step-icon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; background: color-mix(in oklab, var(--brand-2) 18%, transparent); color: var(--brand-2); margin-bottom: 6px; }
.step-title { font-weight: 700; letter-spacing: .2px; }
.step-desc { color: var(--muted); font-size: 14px; }

/* Beneficios rápidos tipo chips */
.quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 10px 0 6px; padding: 0; list-style: none; }
.quick li { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--border); background: color-mix(in oklab, var(--surface) 92%, transparent); color: var(--fg); border-radius: 999px; padding: 10px 12px; white-space: nowrap; justify-content: center; }
.quick svg { color: var(--brand-2); }

/* Detalles plegables */
.details { margin-top: 12px; }
.details-summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 10px; border: 1px solid var(--border); color: var(--fg); background: transparent; }
.details-summary::-webkit-details-marker { display: none; }
.details[open] .details-summary { background: color-mix(in oklab, var(--surface) 90%, transparent); }

.code { margin-top: 8px; }
.code-head { display: flex; align-items: center; justify-content: space-between; color: var(--muted); margin-bottom: 8px; }
.btn.small { padding: 6px 10px; border-radius: 10px; font-size: 14px; box-shadow: none; }
.code-block { border: 1px solid var(--border); border-radius: 14px; background: #0a0f1a; color: #d7e3ff; padding: 14px; overflow: auto; box-shadow: var(--shadow); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.5px; }
[data-theme="light"] .code-block, :root[data-theme="light"] .code-block { background: #0b1220; color: #e6edf3; }
.note { margin: 8px 0 0; color: var(--muted); font-size: 14px; }

.mini { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 18px; }
.mini-item { border: 1px solid var(--border); border-radius: 14px; background: var(--card); padding: 16px; }
.mini-item h4 { margin: 0 0 6px; font-size: 16px; }
.mini-item p { margin: 0; color: var(--muted); }

@media (max-width: 1024px) { .quick{grid-template-columns: repeat(2, 1fr);} .mini{grid-template-columns: repeat(2, 1fr);} }
@media (max-width: 900px) { .stepper{grid-template-columns:1fr;} .stepper li::after{display:none;} .quick{grid-template-columns:1fr;} .mini{grid-template-columns:1fr;} }

/* Demo en vivo */
.demo-form { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 12px; align-items: end; margin: 12px 0 10px; }
.field { display: grid; gap: 6px; }
.field-label { font-size: 14px; color: var(--muted); }
.demo-form input { width: 100%; padding: 12px 12px; border-radius: 12px; border: 1px solid var(--border); background: color-mix(in oklab, var(--surface) 94%, transparent); color: var(--fg); box-shadow: var(--shadow); }
.demo-form input:focus { outline: none; border-color: color-mix(in oklab, var(--brand-2) 50%, var(--border)); box-shadow: 0 0 0 3px color-mix(in oklab, var(--brand-2) 25%, transparent); }
.demo-status { margin: 6px 0 12px; color: var(--muted); min-height: 1.2em; }
.demo-results { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.result-card { border: 1px solid var(--border); border-radius: 14px; background: var(--card); padding: 14px; box-shadow: var(--shadow); }
.result-card h4 { margin: 0 0 4px; font-size: 16px; }
.result-card p { margin: 0; color: var(--muted); font-size: 14px; }
@media (max-width: 1024px) { .demo-form{grid-template-columns:1fr;}.demo-results{grid-template-columns: repeat(2, 1fr);} }
@media (max-width: 760px) { .demo-results{grid-template-columns:1fr;} }

/* Video guía dentro de Demo en vivo */
.video-card { margin-top: 10px; }
.video-card h3 { margin: 0 0 8px; font-size: 18px; }
.demo-video { width: 100%; height: auto; border-radius: 12px; display: block; box-shadow: var(--shadow); }

/* CTA y modal de video */
.video-cta { margin: 10px 0 14px; }
.modal { position: fixed; inset: 0; display: none; background: rgba(0,0,0,0.6); z-index: 1000; padding: 24px; }
.modal.open { display: grid; place-items: center; }
.modal-dialog { position: relative; width: min(960px, 96vw); max-height: 92vh; overflow: auto; background: var(--card); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow); padding: 16px; }
.modal-close { position: absolute; top: 8px; right: 8px; width: 32px; height: 32px; display: grid; place-items: center; border-radius: 999px; border: 1px solid var(--border); background: color-mix(in oklab, var(--surface) 94%, transparent); color: var(--fg); cursor: pointer; }
.modal-close:hover { border-color: color-mix(in oklab, var(--brand-2) 50%, var(--border)); }

/* Texto con efecto neón (acorde a la paleta) */
.neon-brand, .neon-cyan, .neon-fuchsia { letter-spacing: -0.01em; }
.neon-brand { color: var(--brand); text-shadow:
  0 0 0.6px color-mix(in oklab, var(--brand) 75%, transparent),
  0 0 8px color-mix(in oklab, var(--brand) 55%, transparent),
  0 0 18px color-mix(in oklab, var(--brand) 35%, transparent);
}
.neon-cyan { color: var(--brand-2); text-shadow:
  0 0 0.6px color-mix(in oklab, var(--brand-2) 75%, transparent),
  0 0 8px color-mix(in oklab, var(--brand-2) 55%, transparent),
  0 0 18px color-mix(in oklab, var(--brand-2) 35%, transparent);
}
.neon-fuchsia { color: var(--accent); text-shadow:
  0 0 0.6px color-mix(in oklab, var(--accent) 75%, transparent),
  0 0 8px color-mix(in oklab, var(--accent) 55%, transparent),
  0 0 18px color-mix(in oklab, var(--accent) 35%, transparent);
}

/* Atenúa el glow en tema claro para mantener legibilidad */
@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] .neon-brand { text-shadow:
    0 0 0.4px color-mix(in oklab, var(--brand) 60%, transparent),
    0 0 6px color-mix(in oklab, var(--brand) 35%, transparent),
    0 0 12px color-mix(in oklab, var(--brand) 20%, transparent);
  }
  :root[data-theme="auto"] .neon-cyan { text-shadow:
    0 0 0.4px color-mix(in oklab, var(--brand-2) 60%, transparent),
    0 0 6px color-mix(in oklab, var(--brand-2) 35%, transparent),
    0 0 12px color-mix(in oklab, var(--brand-2) 20%, transparent);
  }
  :root[data-theme="auto"] .neon-fuchsia { text-shadow:
    0 0 0.4px color-mix(in oklab, var(--accent) 60%, transparent),
    0 0 6px color-mix(in oklab, var(--accent) 35%, transparent),
    0 0 12px color-mix(in oklab, var(--accent) 20%, transparent);
  }
}
[data-theme="light"] .neon-brand { text-shadow:
  0 0 0.4px color-mix(in oklab, var(--brand) 60%, transparent),
  0 0 6px color-mix(in oklab, var(--brand) 35%, transparent),
  0 0 12px color-mix(in oklab, var(--brand) 20%, transparent);
}
[data-theme="light"] .neon-cyan { text-shadow:
  0 0 0.4px color-mix(in oklab, var(--brand-2) 60%, transparent),
  0 0 6px color-mix(in oklab, var(--brand-2) 35%, transparent),
  0 0 12px color-mix(in oklab, var(--brand-2) 20%, transparent);
}
[data-theme="light"] .neon-fuchsia { text-shadow:
  0 0 0.4px color-mix(in oklab, var(--accent) 60%, transparent),
  0 0 6px color-mix(in oklab, var(--accent) 35%, transparent),
  0 0 12px color-mix(in oklab, var(--accent) 20%, transparent);
}