/* ==========================================================================
   Youleader — landing 2026
   Paleta y tipografía oficiales de la marca (mismas variables que
   www.youleader.com y que la plataforma): azul #1b62f2 como color primario,
   coral #f54863 como acento, Gilroy para todo el texto.

   Dos temas. El oscuro es el predeterminado (igual que la plataforma) y se
   marca con data-theme en <html>; el claro es una variante completa, no un
   parche. Ninguna regla de abajo trae color fijo: todo sale de los tokens de
   :root, así que cambiar de tema no deja nada a medias.
   ========================================================================== */

/* ── Tipografía de marca ─────────────────────────────────────────────────── */
@font-face { font-family: "Gilroy"; src: url("assets/fonts/Gilroy-Regular.ttf")  format("truetype"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Gilroy"; src: url("assets/fonts/Gilroy-Medium.ttf")   format("truetype"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "Gilroy"; src: url("assets/fonts/Gilroy-SemiBold.ttf") format("truetype"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Gilroy"; src: url("assets/fonts/Gilroy-Bold.ttf")     format("truetype"); font-weight: 700; font-style: normal; font-display: swap; }
/* Gilroy no tiene un corte más pesado publicado en el sitio: el 800 reusa Bold
   para que los títulos no caigan a una sintética del navegador. */
@font-face { font-family: "Gilroy"; src: url("assets/fonts/Gilroy-Bold.ttf")     format("truetype"); font-weight: 800; font-style: normal; font-display: swap; }

/* ── Tokens compartidos ──────────────────────────────────────────────────── */
:root {
  --radius: 16px;
  --max: 1160px;
  --header-h: 72px;
}

/* ── TEMA OSCURO (predeterminado) ────────────────────────────────────────── */
:root,
[data-theme="dark"] {
  color-scheme: dark;

  --brand: #5b8cff;          /* azul de marca aclarado para leerse sobre fondo oscuro */
  --brand-strong: #7ba8ff;   /* hover */
  --brand-2: #6f9bf7;
  --brand-light: rgba(91, 140, 255, 0.32);
  --brand-tint: rgba(91, 140, 255, 0.12);

  --accent: #f76a80;         /* coral aclarado para fondo oscuro */
  --accent-strong: #ff8496;
  --accent-tint: rgba(247, 106, 128, 0.14);
  --radar-fill: rgba(247, 106, 128, 0.18);
  --aura-brand: rgba(91, 140, 255, 0.30);
  --brand-glint: #cfe0ff;
  --spot-color: rgba(91, 140, 255, 0.16);
  --aura-accent: rgba(247, 106, 128, 0.22);

  --ink: #e4e1ed;
  --muted: #a3a8b8;
  --line: rgba(255, 255, 255, 0.11);
  --bg: #0a0e17;
  --bg-alt: #10141f;
  --surface: #151a26;        /* tarjetas, formulario, maqueta de la app */
  --surface-2: #1b2130;      /* superficies anidadas dentro de una tarjeta */

  --header-bg: rgba(10, 14, 23, 0.82);
  --band-bg: #10141f;        /* bandas "problema" y "evidencia" */
  --band-line: rgba(111, 155, 247, 0.20);
  --band-glow: rgba(91, 140, 255, 0.20);
  --cta-bg: #14357f;         /* banda azul del cierre, más profunda en oscuro */
  --cta-glow: rgba(247, 106, 128, 0.24);

  /* Los logos de clientes son oscuros sobre transparente: en tema oscuro se
     convierten en siluetas blancas, que es el tratamiento que se lee parejo
     sin importar el color original de cada marca. */
  --logo-filter: brightness(0) invert(1);
  --logo-filter-hover: brightness(0) invert(1);
  --logo-opacity: .5;
  --logo-opacity-hover: .95;

  --shadow: 0 10px 30px -14px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 30px 60px -24px rgba(0, 0, 0, 0.85);
}

/* ── TEMA CLARO ──────────────────────────────────────────────────────────── */
[data-theme="light"] {
  color-scheme: light;

  --brand: #1b62f2;
  --brand-strong: #103fb0;
  --brand-2: #6f9bf7;
  --brand-light: #c3dbf2;
  --brand-tint: #e9f1fd;

  --accent: #f54863;
  --accent-strong: #d92b47;
  --accent-tint: #fdecef;
  --radar-fill: rgba(245, 72, 99, 0.12);
  --aura-brand: rgba(27, 98, 242, 0.16);
  --brand-glint: #7ba8ff;
  --spot-color: rgba(27, 98, 242, 0.10);
  --aura-accent: rgba(245, 72, 99, 0.13);

  --ink: #191919;
  --muted: #5f6470;
  --line: #e3e8f2;
  --bg: #ffffff;
  --bg-alt: #f6f8fc;
  --surface: #ffffff;
  --surface-2: #f6f8fc;

  --header-bg: rgba(255, 255, 255, 0.9);
  --band-bg: #191919;
  --band-line: rgba(111, 155, 247, 0.22);
  --band-glow: rgba(27, 98, 242, 0.30);
  --cta-bg: #1b62f2;
  --cta-glow: rgba(245, 72, 99, 0.22);

  --logo-filter: grayscale(1);
  --logo-filter-hover: grayscale(0);
  --logo-opacity: .62;
  --logo-opacity-hover: 1;

  --shadow: 0 10px 30px -14px rgba(25, 25, 25, 0.16);
  --shadow-lg: 0 30px 60px -24px rgba(27, 98, 242, 0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  font-family: "Gilroy", "Poppins", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s ease, color .2s ease;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 88px 0; }

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 800; }
h1 { font-size: clamp(2.3rem, 5vw, 3.7rem); }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.45rem); max-width: 22ch; }
h3 { font-size: 1.2rem; letter-spacing: -0.01em; font-weight: 700; }
p { max-width: 62ch; }
.lead { font-size: 1.18rem; color: var(--muted); }
h2 + .lead { margin-top: 14px; }
.eyebrow {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--brand); margin-bottom: 14px;
}
.eyebrow-on-brand { color: rgba(255, 255, 255, 0.72); }

/* ── Accesibilidad ───────────────────────────────────────────────────────── */
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--brand); color: #fff; padding: 12px 18px; border-radius: 0 0 8px 0; font-weight: 600;
}
.skip:focus { left: 0; }
:where(a, button, input, select, summary):focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px;
}

/* ── Botones ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 24px; border-radius: 10px; font: inherit; font-weight: 600; font-size: 1rem;
  border: 1.5px solid transparent; cursor: pointer;
  transition: background .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-strong); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { padding: 10px 18px; font-size: 0.95rem; }
.btn-lg { padding: 16px 28px; font-size: 1.05rem; }

/* En tema oscuro el azul de marca es claro: el texto negro contrasta mejor
   que el blanco sobre los botones primarios. */
[data-theme="dark"] .btn-primary { color: #0a0e17; }

/* ── Header ──────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .2s ease, background-color .2s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px -18px rgba(0, 0, 0, .8); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 16px; }
.brand img { height: 26px; width: auto; }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { font-weight: 600; font-size: 0.95rem; color: var(--muted); transition: color .15s ease; }
.nav a:hover { color: var(--ink); }
.nav a.active { color: var(--brand); }
.nav .btn { color: #fff; }
[data-theme="dark"] .nav .btn { color: #0a0e17; }
.nav a.btn.active { color: inherit; }

/* ── Controles de tema e idioma ──────────────────────────────────────────── */
.header-tools { display: flex; align-items: center; gap: 8px; }
.tool-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 38px; min-width: 38px; padding: 0 9px;
  border: 1.5px solid var(--line); border-radius: 10px;
  background: var(--surface-2); color: var(--muted);
  font: inherit; font-size: .8rem; cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
}
.tool-btn:hover { color: var(--brand); border-color: var(--brand-light); }
.tool-btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* Solo se ve el icono del tema al que se puede cambiar. */
.icon-sun { display: none; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

.lang { position: relative; }
.lang-btn { padding: 0 10px; }
.lang-code { font-weight: 800; letter-spacing: .04em; }
.lang-caret { width: 13px; height: 13px; transition: transform .15s ease; }
.lang-btn[aria-expanded="true"] { color: var(--brand); border-color: var(--brand-light); }
.lang-btn[aria-expanded="true"] .lang-caret { transform: rotate(180deg); }

.lang-menu {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 60;
  min-width: 168px; padding: 6px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; box-shadow: var(--shadow-lg);
}
.lang-menu[hidden] { display: none; }
.lang-menu button {
  width: 100%; display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border: 0; border-radius: 8px;
  background: transparent; color: var(--muted);
  font: inherit; font-size: .88rem; cursor: pointer; text-align: left;
  transition: background .15s ease, color .15s ease;
}
.lang-menu button:hover { background: var(--surface-2); color: var(--ink); }
.lang-menu .code { font-weight: 800; font-size: .74rem; letter-spacing: .06em; width: 22px; color: var(--muted); }
.lang-menu .name { flex: 1; }
.lang-menu .tick { visibility: hidden; color: var(--brand); font-weight: 800; }
.lang-menu button[aria-selected="true"] { color: var(--brand); background: var(--brand-tint); font-weight: 600; }
.lang-menu button[aria-selected="true"] .code { color: var(--brand); }
.lang-menu button[aria-selected="true"] .tick { visibility: visible; }

.nav-toggle {
  display: none; width: 38px; height: 38px; border: 1.5px solid var(--line);
  border-radius: 10px; background: var(--surface-2); cursor: pointer; padding: 0;
  align-items: center; justify-content: center; flex-direction: column; gap: 4px;
}
.nav-toggle span { display: block; width: 17px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1010px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 12px 24px 22px; box-shadow: var(--shadow);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: opacity .18s ease, transform .18s ease;
    max-height: calc(100dvh - var(--header-h)); overflow-y: auto;
  }
  .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav a { padding: 14px 4px; border-bottom: 1px solid var(--line); font-size: 1.05rem; }
  .nav .btn { margin-top: 16px; border-bottom: 0; }
}

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero { padding: 76px 0 64px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 .hl { color: var(--brand); }
.hero .lead { margin: 22px 0 32px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-note { margin-top: 20px; font-size: 0.92rem; color: var(--muted); }

.radar-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.radar-card figcaption { margin-top: 14px; font-size: 0.88rem; color: var(--muted); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.radar-card figcaption strong { color: var(--ink); }
.legend { display: flex; gap: 16px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.dot-before { background: var(--muted); }
.dot-after { background: var(--accent); }
.radar { width: 100%; height: auto; }
.radar text { font-family: "Gilroy", "Poppins", sans-serif; font-size: 12px; fill: var(--muted); font-weight: 600; }
.radar .grid { fill: none; stroke: var(--line); stroke-width: 1; }
.radar .axis { stroke: var(--line); stroke-width: 1; }
.radar .before { fill: color-mix(in srgb, var(--ink) 7%, transparent); stroke: var(--muted); stroke-width: 1.5; stroke-dasharray: 4 3; }
.radar .after { fill: var(--radar-fill); stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; }
.radar .after-dots circle { fill: var(--accent); }

/* Etiqueta de la fase que está mostrando la animación del radar. */
.radar-phase {
  display: flex; align-items: center; gap: 9px;
  font-size: .84rem; font-weight: 600; color: var(--muted);
  margin-bottom: 12px; transition: color .35s ease;
}
.radar-phase i { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); transition: background .35s ease, box-shadow .35s ease; }
.radar-phase.is-after { color: var(--ink); }
.radar-phase.is-after i { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-tint); }

/* La leyenda acompaña a la fase: se atenúa la serie que aún no aparece. */
.legend > span { transition: opacity .35s ease; }
.legend > span.is-dim { opacity: .35; }

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

/* ── Logos de clientes (carrusel infinito) ───────────────────────────────── */
.logos { padding: 34px 0 40px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-alt); }
.logos p { font-size: 0.9rem; color: var(--muted); margin-bottom: 20px; }

/* La ventana vive dentro de .wrap, así que respeta el margen general de la
   página. Difumina los extremos para que los logos entren y salgan en lugar
   de aparecer cortados contra el borde. */
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 56px, #000 calc(100% - 56px), transparent);
          mask-image: linear-gradient(to right, transparent, #000 56px, #000 calc(100% - 56px), transparent);
}
.marquee-track { display: flex; width: max-content; animation: logo-scroll 30s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }

/* El padding derecho forma el hueco entre una copia y la siguiente y, al
   contar como ancho de la copia, hace que el paso caiga justo en el empalme.
   Con un `gap` en la pista el desplazamiento se quedaría corto y se vería. */
.logo-row { display: flex; gap: 44px; align-items: center; padding-right: 44px; }
.logo-row img { height: 30px; width: auto; filter: var(--logo-filter); opacity: var(--logo-opacity); transition: filter .2s ease, opacity .2s ease; }
.logo-row img:hover { filter: var(--logo-filter-hover); opacity: var(--logo-opacity-hover); }

/* Un tercio de la pista = exactamente una copia. Si cambia el número de
   copias en el HTML, este divisor tiene que cambiar con él. */
@keyframes logo-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(calc(-100% / 3)); }
}

/* Sin movimiento: una sola fila centrada, que envuelve como antes. */
@media (prefers-reduced-motion: reduce) {
  .marquee { -webkit-mask-image: none; mask-image: none; }
  .marquee-track { animation: none; width: auto; }
  .marquee-track .logo-row[aria-hidden="true"] { display: none; }
  .logo-row { flex-wrap: wrap; justify-content: center; padding-right: 0; }
}

/* ── Bandas oscuras (problema y evidencia) ───────────────────────────────── */
.problem, .evidence { color: #fff; }
.problem h2, .evidence h2 { color: #fff; }
.problem .eyebrow, .evidence .eyebrow { color: var(--brand-2); }
.problem .lead, .evidence .lead { color: rgba(255, 255, 255, .78); }

.problem {
  background:
    radial-gradient(700px 340px at 15% 0%, var(--band-glow), transparent 62%),
    var(--band-bg);
}
.problem .lead { margin-top: 16px; }
.problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.qlist { display: grid; gap: 14px; }
.qlist li { padding: 16px 18px; border: 1px solid var(--band-line); border-radius: 12px; font-weight: 600; background: rgba(255, 255, 255, .03); }
.problem .closing { margin-top: 26px; font-weight: 600; color: var(--brand-2); max-width: none; }
@media (max-width: 900px) { .problem-grid { grid-template-columns: 1fr; gap: 36px; } }

/* ── Beneficios ──────────────────────────────────────────────────────────── */
.benefits h2 { margin-bottom: 12px; }
.benefits > .wrap > .lead { margin-bottom: 44px; }
.benefit { display: grid; grid-template-columns: 240px 1fr; gap: 36px; padding: 34px 0; border-top: 1px solid var(--line); }
.benefit:last-child { border-bottom: 1px solid var(--line); }
.benefit h3 { color: var(--brand); }
.benefit .num { display: block; font-size: 0.78rem; letter-spacing: .12em; color: var(--muted); font-weight: 700; margin-bottom: 8px; }
.benefit ul { margin-top: 16px; display: grid; gap: 8px; }
.benefit ul li { position: relative; padding-left: 22px; color: var(--muted); }
.benefit ul li::before {
  content: ""; position: absolute; left: 0; top: .58em;
  width: 9px; height: 9px; border-radius: 50%; background: var(--accent);
}
@media (max-width: 800px) { .benefit { grid-template-columns: 1fr; gap: 12px; } }

/* ── Cómo funciona ───────────────────────────────────────────────────────── */
.how { background: var(--bg-alt); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 44px; counter-reset: step; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.step::before {
  counter-increment: step; content: counter(step);
  display: inline-flex; width: 36px; height: 36px; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--brand); color: #fff; font-weight: 800; margin-bottom: 16px;
}
[data-theme="dark"] .step::before { color: #0a0e17; }
.step h3 { margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 1rem; }
.step small { display: block; margin-top: 16px; color: var(--brand); font-weight: 600; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }

/* ── Plataforma: maqueta de la app ───────────────────────────────────────── */
.app {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--surface); box-shadow: var(--shadow-lg); margin-top: 40px; font-size: 0.88rem;
}
.app-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--line); }
.app-top img { height: 18px; width: auto; }
.app-user { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.app-user i {
  width: 30px; height: 30px; border-radius: 50%; background: var(--brand-tint); color: var(--brand);
  display: inline-flex; align-items: center; justify-content: center; font-style: normal; font-weight: 800; font-size: .75rem;
}
.app-body { display: grid; grid-template-columns: 210px 1fr 330px; min-height: 520px; }
.app-side { background: var(--surface-2); border-right: 1px solid var(--line); padding: 18px 12px; }
.app-side ul { display: grid; gap: 4px; }
.app-side li { padding: 9px 12px; border-radius: 8px; color: var(--muted); font-weight: 600; }
.app-side li.on { background: var(--surface); color: var(--brand); border: 1px solid var(--line); }
.app-side .prog { margin-top: 26px; padding-top: 16px; border-top: 1px solid var(--line); }
.app-side .prog b { display: block; font-size: .82rem; margin-bottom: 8px; }
.bar { height: 7px; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.bar i { display: block; height: 100%; width: 42%; background: var(--accent); }
.app-side .prog span { display: block; font-size: .76rem; color: var(--muted); margin-top: 7px; }
.app-main { padding: 22px 24px; border-right: 1px solid var(--line); }
.crumb { color: var(--muted); font-size: .78rem; margin-bottom: 8px; letter-spacing: .04em; text-transform: uppercase; font-weight: 600; }
.app-main h3 { font-size: 1.25rem; margin-bottom: 14px; }
.video {
  aspect-ratio: 16 / 9; border-radius: 12px; margin-bottom: 16px; position: relative;
  background: linear-gradient(135deg, #103fb0, #1b62f2);
  display: flex; align-items: center; justify-content: center;
}
.video::before {
  content: ""; width: 0; height: 0; margin-left: 6px;
  border-left: 22px solid #fff; border-top: 13px solid transparent; border-bottom: 13px solid transparent;
}
.video span { position: absolute; left: 14px; bottom: 12px; color: #fff; font-size: .78rem; opacity: .88; }
.lesson-meta { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: .8rem; margin-bottom: 18px; }
.lesson-meta .done { color: var(--brand); font-weight: 600; }
.lesson-meta .pend { color: var(--accent); font-weight: 600; }
.next { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: var(--surface-2); }
.next b { display: block; margin-bottom: 8px; }
.next dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; color: var(--muted); }
.next dt { font-weight: 600; color: var(--ink); }

.tutor { display: flex; flex-direction: column; background: var(--surface); }
.tutor-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.tutor-head i {
  width: 32px; height: 32px; border-radius: 9px; background: var(--brand); color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-style: normal; font-weight: 800; font-size: .85rem;
}
[data-theme="dark"] .tutor-head i { color: #0a0e17; }
.tutor-head b { display: block; font-size: .92rem; }
.tutor-head span { font-size: .75rem; color: var(--muted); }
.tutor-log { padding: 14px 16px; display: grid; gap: 10px; flex: 1; align-content: start; }
.msg { padding: 10px 12px; border-radius: 12px; line-height: 1.45; font-size: .86rem; }
.msg.bot { background: var(--surface-2); border-top-left-radius: 3px; max-width: 92%; }
.msg.me { background: var(--brand-tint); color: var(--brand); margin-left: auto; max-width: 85%; border-top-right-radius: 3px; }
.msg.commit { background: var(--accent-tint); border: 1px solid var(--accent); font-size: .82rem; color: var(--ink); }
.msg.commit b { display: block; margin-bottom: 3px; color: var(--accent); }
.tutor-in {
  margin: 0 16px 14px; border: 1.5px solid var(--line); border-radius: 10px;
  padding: 10px 12px; color: var(--muted); font-size: .85rem; display: flex; justify-content: space-between; gap: 10px;
}
.tutor-in i { color: var(--brand); font-style: normal; font-weight: 800; }

.feat { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 44px; margin-top: 40px; }
.feat li { padding-left: 22px; position: relative; }
.feat li::before { content: ""; position: absolute; left: 0; top: .58em; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.feat b { display: block; }
.feat span { color: var(--muted); font-size: 1rem; }

@media (max-width: 1020px) { .app-body { grid-template-columns: 1fr 300px; } .app-side { display: none; } }
@media (max-width: 760px) {
  .app-body { grid-template-columns: 1fr; }
  .app-main { border-right: 0; border-bottom: 1px solid var(--line); }
  .feat { grid-template-columns: 1fr; }
}

/* ── Evidencia ───────────────────────────────────────────────────────────── */
.evidence {
  background:
    radial-gradient(620px 320px at 85% 0%, var(--band-glow), transparent 62%),
    var(--band-bg);
}
.evidence .lead { margin-top: 12px; }
.sources { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.src { border: 1px solid var(--band-line); border-radius: 14px; padding: 22px; background: rgba(255, 255, 255, .03); }
.src b { display: block; color: var(--brand-2); margin-bottom: 6px; }
.src span { color: rgba(255, 255, 255, .76); font-size: .98rem; }
.meel { margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--band-line); color: rgba(255, 255, 255, .78); max-width: 74ch; }
.meel strong { color: #fff; }
.meel .tag { color: var(--accent); font-weight: 700; }
@media (max-width: 900px) { .sources { grid-template-columns: 1fr; } }

/* ── Resultados ──────────────────────────────────────────────────────────── */
.results-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 44px; }
.stat { border-top: 3px solid var(--accent); padding-top: 18px; }
.stat b { display: block; font-size: 2.7rem; font-weight: 800; letter-spacing: -.03em; line-height: 1; color: var(--ink); }
.stat span { color: var(--muted); display: block; margin-top: 10px; font-size: 1rem; }
.results-note { margin-top: 48px; color: var(--muted); font-size: .95rem; }
.behaviors { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 10px; }
.behaviors span { padding: 8px 15px; border: 1px solid var(--line); border-radius: 999px; font-size: .92rem; font-weight: 600; background: var(--surface-2); }
@media (max-width: 900px) { .results-grid { grid-template-columns: 1fr; gap: 24px; } }

/* ── Testimonios ─────────────────────────────────────────────────────────── */
.testi { background: var(--bg-alt); }
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 44px; }
blockquote { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; gap: 18px; box-shadow: var(--shadow); }
blockquote .mark { color: var(--accent); font-size: 2.2rem; line-height: .6; font-weight: 800; }
blockquote p { font-size: 1.02rem; }
blockquote footer { font-size: .9rem; color: var(--muted); margin-top: auto; display: flex; align-items: center; gap: 12px; }
blockquote footer img { height: 22px; width: auto; filter: var(--logo-filter); opacity: var(--logo-opacity); }
blockquote footer b { color: var(--ink); display: block; }
@media (max-width: 900px) { .quotes { grid-template-columns: 1fr; } }

/* ── Precios + FAQ ───────────────────────────────────────────────────────── */
.commercial-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.price-box { background: var(--brand-tint); border: 1px solid var(--brand-light); border-radius: var(--radius); padding: 32px; }
.price-box h3 { margin-bottom: 12px; }
.price-box ul { margin: 16px 0 24px; display: grid; gap: 8px; }
.price-box ul li { position: relative; padding-left: 22px; color: var(--muted); }
.price-box ul li::before { content: ""; position: absolute; left: 0; top: .58em; width: 9px; height: 9px; border-radius: 50%; background: var(--brand); }
.faq h3 { margin-bottom: 16px; }
.faq details { border-top: 1px solid var(--line); padding: 16px 0; }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary { font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand); font-weight: 800; font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 10px; color: var(--muted); font-size: 1rem; }
@media (max-width: 900px) { .commercial-grid { grid-template-columns: 1fr; gap: 40px; } }

/* ── CTA final + formulario ──────────────────────────────────────────────── */
.cta {
  background:
    radial-gradient(700px 340px at 80% 10%, var(--cta-glow), transparent 60%),
    var(--cta-bg);
  color: #fff;
}
.cta h2 { color: #fff; }
.cta .lead { color: rgba(255, 255, 255, .82); }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.cta-points { margin: 26px 0 0; display: grid; gap: 10px; }
.cta-points li { position: relative; padding-left: 24px; color: rgba(255, 255, 255, .9); }
.cta-points li::before { content: ""; position: absolute; left: 0; top: .5em; width: 10px; height: 10px; border-radius: 50%; background: #fff; opacity: .85; }
.cta .alt { margin-top: 28px; font-size: .98rem; color: rgba(255, 255, 255, .85); }
.cta .alt a { text-decoration: underline; color: #fff; font-weight: 600; }

form { background: var(--surface); color: var(--ink); border-radius: var(--radius); padding: 28px; display: grid; gap: 15px; box-shadow: var(--shadow-lg); }
.field { display: grid; gap: 6px; }
.field label { font-size: .9rem; font-weight: 600; }
input, select { font: inherit; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px; width: 100%; background: var(--surface-2); color: var(--ink); }
input::placeholder { color: var(--muted); opacity: .8; }
input:focus, select:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 3px var(--brand-tint); }
input.invalid, select.invalid { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
form .btn { margin-top: 4px; }
form .legal { color: var(--muted); font-size: .82rem; max-width: none; }
.form-msg { font-size: .92rem; font-weight: 600; min-height: 1.2em; max-width: none; }
.form-msg.error { color: var(--accent); }
.form-msg.ok { color: var(--brand); }
@media (max-width: 900px) { .cta-grid { grid-template-columns: 1fr; gap: 36px; } }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer { padding: 36px 0; font-size: .9rem; color: var(--muted); border-top: 1px solid var(--line); }
.site-footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.site-footer img { height: 20px; width: auto; }
.site-footer ul { display: flex; gap: 22px; flex-wrap: wrap; }
.site-footer a:hover { color: var(--ink); }


/* ══ EFECTOS ═════════════════════════════════════════════════════════════
   Todo lo de aquí anima solo transform y opacity, que el navegador resuelve
   en la GPU: ninguna de estas animaciones provoca reflow. Y todo se apaga
   con prefers-reduced-motion (ver el bloque del final).
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Aura de color del hero ──────────────────────────────────────────────
   Dos manchas de luz que respiran lentamente detrás del contenido. El
   contenedor recorta: así las manchas pueden ser enormes sin empujar la
   página ni sacar barra de scroll horizontal. */
.hero { position: relative; }
.hero-aura { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }
.hero-aura .aura { position: absolute; border-radius: 50%; will-change: transform; }
.aura-1 {
  width: 760px; height: 620px; top: -220px; left: -180px;
  background: radial-gradient(closest-side, var(--aura-brand), transparent 72%);
  animation: aura-a 19s ease-in-out infinite alternate;
}
.aura-2 {
  width: 680px; height: 560px; bottom: -260px; right: -140px;
  background: radial-gradient(closest-side, var(--aura-accent), transparent 72%);
  animation: aura-b 23s ease-in-out infinite alternate;
}
@keyframes aura-a { from { transform: translate3d(0,0,0) scale(1); } to { transform: translate3d(90px, 60px, 0) scale(1.14); } }
@keyframes aura-b { from { transform: translate3d(0,0,0) scale(1.08); } to { transform: translate3d(-80px, -50px, 0) scale(.94); } }
.hero .wrap { position: relative; z-index: 1; }

/* ── Tarjetas flotantes alrededor del radar ─────────────────────────────── */
.radar-stage { position: relative; }
.float-card {
  position: absolute; z-index: 2;
  display: flex; align-items: center; gap: 9px;
  padding: 11px 15px; border-radius: 14px;
  background: var(--surface); border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  font-size: .82rem; font-weight: 600; color: var(--ink);
  white-space: nowrap; will-change: transform;
}
.float-card .fc-dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.fc-ok { background: #22c55e; box-shadow: 0 0 0 4px rgba(34, 197, 94, .16); }
.fc-brand { background: var(--brand); box-shadow: 0 0 0 4px var(--brand-tint); }
.fc-accent { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-tint); }

/* Cada una entra con su propio retraso y flota a distinto ritmo, para que el
   conjunto nunca se sincronice y parezca un solo bloque moviéndose. */
.fc-1 { top: -22px;  right: 12%;  --tilt: -6deg; animation: fc-in .7s .35s both, fc-float 7s 1.05s ease-in-out infinite; }
.fc-2 { bottom: 22%;  left: -62px; --tilt: 5deg;  animation: fc-in .7s .55s both, fc-float 8.5s 1.25s ease-in-out infinite; }
.fc-3 { top: 44%;     right: -54px; --tilt: 7deg; animation: fc-in .7s .75s both, fc-float 7.8s 1.45s ease-in-out infinite; }

@keyframes fc-in {
  from { opacity: 0; transform: rotate(var(--tilt)) translateY(14px) scale(.94); }
  to   { opacity: 1; transform: rotate(var(--tilt)) translateY(0) scale(1); }
}
@keyframes fc-float {
  0%, 100% { transform: rotate(var(--tilt)) translateY(0); }
  50%      { transform: rotate(var(--tilt)) translateY(-11px); }
}

/* Debajo de 1100px el hero se va quedando sin margen lateral y las tarjetas
   se encimarían con el texto: mejor no mostrarlas. */
@media (max-width: 1100px) { .float-card { display: none; } }

/* ── Realce al pasar el cursor sobre una tarjeta ───────────────────────────
   El estado no cuelga de :hover sino de la clase .fx-hover, que script.js pone
   solo cuando el puntero es un ratón de verdad. En una pantalla táctil :hover
   se queda pegado después de tocar, y una tarjeta levantada que no se vuelve a
   bajar se ve como un bug. */
.lift { transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease; }

/* Foco de luz que sigue al cursor dentro de la tarjeta. Las coordenadas las
   escribe script.js en --mx / --my. */
.spot { position: relative; isolation: isolate; }
.spot::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  border-radius: inherit; pointer-events: none;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), var(--spot-color), transparent 62%);
  opacity: 0; transition: opacity .3s ease;
}
.spot.fx-hover::before { opacity: 1; }

/* Las bandas oscuras son oscuras en los dos temas: ahí el foco tiene que ser
   una luz azul tenue y no el tinte claro del tema, que lavaba el texto. */
.evidence .spot, .problem .spot { --spot-color: rgba(111, 155, 247, 0.20); }

/* ── Barrido de brillo en los botones primarios ──────────────────────────── */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
  content: ""; position: absolute; top: 0; bottom: 0; left: -140%; width: 55%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .34), transparent);
  transform: skewX(-18deg); pointer-events: none;
}
.btn-primary:hover::after { animation: shine .75s ease; }
@keyframes shine { to { left: 160%; } }

/* ── Degradado vivo en la frase destacada del titular ────────────────────── */
@supports (background-clip: text) or (-webkit-background-clip: text) {
  .hero h1 .hl {
    background: linear-gradient(100deg, var(--brand) 42%, var(--brand-glint) 50%, var(--brand) 58%);
    background-size: 260% 100%;
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
    animation: hl-shift 9s ease-in-out infinite;
  }
}
@keyframes hl-shift { 0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

/* ── Aparición al hacer scroll ───────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Tiene que ir después de .reveal.in: misma especificidad y varias tarjetas
   llevan las dos clases, así que gana la última declarada. */
.lift.fx-hover { transform: translateY(-6px); border-color: var(--brand-light); box-shadow: var(--shadow-lg); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-aura { display: none; }
  .float-card { animation: none; opacity: 1; transform: rotate(var(--tilt)); }
  .lift.fx-hover { transform: none; }
  .hero h1 .hl { animation: none; }
}
