/* =========================================================
   Academia de la Inteligencia — Hoja de estilos
   ========================================================= */

:root {
  --bg: #0a0d14;
  --bg-2: #0f1420;
  --surface: #141a28;
  --surface-2: #1a2233;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #eef1f7;
  --muted: #9aa3b5;
  --gold: #d9b26a;
  --gold-2: #f1d59a;
  --gold-ink: #1a1408;
  --blue: #6aa6ff;
  --violet: #9b8cff;
  --green: #4fd1a5;

  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --ease: cubic-bezier(.2, .7, .2, 1);

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; }
p { margin: 0; }

.container { width: min(1200px, 100% - 32px); margin-inline: auto; }

.text-gold {
  background: linear-gradient(120deg, var(--gold), var(--gold-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 6px; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, border-color .25s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; transition: transform .25s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn--gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-2));
  color: var(--gold-ink);
  box-shadow: 0 10px 30px -10px rgba(217, 178, 106, 0.6);
}
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -12px rgba(217, 178, 106, 0.75); }
.btn--ghost { border-color: var(--line-strong); background: rgba(255, 255, 255, 0.03); }
.btn--ghost:hover { border-color: var(--gold); background: rgba(217, 178, 106, 0.08); }
.btn--sm { padding: 8px 16px; font-size: 0.85rem; }
.btn--lg { padding: 15px 28px; font-size: 1rem; }
.btn--block { width: 100%; }
.btn:disabled { opacity: .55; cursor: default; transform: none; }

/* ---------- Navegación ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 13, 20, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-color: var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand__mark { width: 34px; height: 34px; color: var(--gold); flex-shrink: 0; }
.brand__text { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; letter-spacing: 0.01em; }
.brand__text em { font-style: italic; font-weight: 500; color: var(--gold); }

.nav__menu { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative;
  padding: 8px 14px;
  font-size: 0.92rem;
  color: var(--muted);
  border-radius: 999px;
  white-space: nowrap;
  transition: color .2s;
}
.nav__link:hover, .nav__link.is-active { color: var(--text); }
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 2px;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--gold);
  transform: translateX(-50%);
}
.nav__cta { margin-left: 10px; }

.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: transparent;
  position: relative;
}
.nav__toggle span {
  position: absolute; left: 12px; right: 12px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s;
}
.nav__toggle span:nth-child(1) { top: 15px; }
.nav__toggle span:nth-child(2) { top: 21px; }
.nav__toggle span:nth-child(3) { top: 27px; }
.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); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
  isolation: isolate;
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; opacity: .7; }
.hero__glow {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(60% 50% at 80% 20%, rgba(155, 140, 255, 0.18), transparent 60%),
    radial-gradient(50% 50% at 10% 80%, rgba(217, 178, 106, 0.14), transparent 60%),
    linear-gradient(to bottom, transparent 70%, var(--bg));
}
.hero__inner { max-width: 960px; }
.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.2rem, 5.6vw, 4.4rem);
  letter-spacing: -0.02em;
  line-height: 1.08;
}
.hero__subtitle {
  margin-top: 24px;
  max-width: 640px;
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  color: var(--muted);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 64px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.hero__stats > div { background: rgba(15, 20, 32, 0.75); padding: 22px 20px; backdrop-filter: blur(6px); }
.hero__stats dt { font-family: var(--font-display); font-size: 1.9rem; font-weight: 600; color: var(--gold-2); }
.hero__stats dd { margin: 4px 0 0; font-size: 0.85rem; color: var(--muted); }

/* ---------- Secciones ---------- */
.section { padding: 110px 0; }
.section--alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.section__head { max-width: 720px; margin-bottom: 48px; }
.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.8vw, 2.9rem);
  font-weight: 600;
  letter-spacing: -0.015em;
}
.section__lead { margin-top: 16px; color: var(--muted); font-size: 1.05rem; }

/* ---------- Filtros ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.filter {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: transparent;
  font-size: 0.9rem;
  color: var(--muted);
  transition: all .2s;
}
.filter:hover { color: var(--text); border-color: var(--gold); }
.filter.is-active { background: var(--text); color: var(--bg); border-color: var(--text); }

/* ---------- Tarjetas de cursos ---------- */
.courses { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 22px; }

.course {
  --accent: var(--gold);
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s, box-shadow .35s, opacity .35s;
}
.course::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), color-mix(in srgb, var(--accent) 16%, transparent), transparent 45%);
  opacity: 0;
  transition: opacity .35s;
  pointer-events: none;
}
.course:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--accent) 45%, transparent); box-shadow: var(--shadow); }
.course:hover::before { opacity: 1; }
.course.is-hidden { display: none; }
.course[data-area="tecnologia"] { --accent: var(--blue); }
.course[data-area="humano"] { --accent: var(--gold); }

.course__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.course__icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 14px;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.course__icon svg { width: 26px; height: 26px; }
.course__num { font-family: var(--font-display); font-size: 0.95rem; color: var(--muted); }
.course__title { font-family: var(--font-display); font-size: 1.45rem; font-weight: 600; }
.course__desc { margin-top: 10px; color: var(--muted); font-size: 0.95rem; flex-grow: 1; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 22px; }
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  color: var(--text);
}
.tag svg { width: 13px; height: 13px; color: var(--accent); }

.course__actions { display: flex; gap: 10px; }
.course__actions .btn { flex: 1; }
.course .btn--enrolled { background: rgba(79, 209, 165, 0.12); color: var(--green); border-color: rgba(79, 209, 165, 0.35); box-shadow: none; }

/* ---------- Metodología ---------- */
.steps {
  list-style: none; padding: 0; margin: 0 0 56px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 28px 24px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
}
.step__num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--gold);
  margin-bottom: 14px;
}
.step h3 { font-size: 1.15rem; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 0.93rem; }

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pillar {
  padding: 28px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(217, 178, 106, 0.08), transparent 60%);
  border: 1px solid var(--line);
}
.pillar__icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: rgba(217, 178, 106, 0.12);
  color: var(--gold);
  margin-bottom: 18px;
}
.pillar__icon svg { width: 24px; height: 24px; }
.pillar h3 { font-size: 1.1rem; margin-bottom: 8px; }
.pillar p { color: var(--muted); font-size: 0.93rem; }

/* ---------- Campus Virtual ---------- */
.campus {
  display: grid;
  grid-template-columns: 260px 1fr;
  border-radius: 24px;
  border: 1px solid var(--line-strong);
  background: var(--bg-2);
  overflow: hidden;
  box-shadow: 0 40px 90px -40px rgba(0, 0, 0, 0.8);
}
.campus__side {
  display: flex; flex-direction: column; gap: 26px;
  padding: 28px 22px;
  background: var(--surface);
  border-right: 1px solid var(--line);
}
.profile { display: flex; align-items: center; gap: 12px; }
.profile__avatar {
  width: 46px; height: 46px; border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 700; font-size: 0.95rem;
  color: var(--gold-ink);
  background: linear-gradient(135deg, var(--gold), var(--gold-2));
}
.profile__name { font-weight: 600; }
.profile__role { font-size: 0.8rem; color: var(--muted); }

.campus__nav { display: flex; flex-direction: column; gap: 4px; }
.campus__tab {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: left;
  transition: background .2s, color .2s;
}
.campus__tab svg { width: 18px; height: 18px; }
.campus__tab:hover { color: var(--text); background: rgba(255, 255, 255, 0.04); }
.campus__tab.is-active { color: var(--text); background: rgba(217, 178, 106, 0.12); }
.campus__tab.is-active svg { color: var(--gold); }

.campus__summary { display: flex; flex-direction: column; align-items: center; gap: 10px; margin-top: auto; color: var(--muted); font-size: 0.85rem; }
.ring {
  --p: 0;
  width: 108px; height: 108px; border-radius: 50%;
  display: grid; place-items: center;
  background: conic-gradient(var(--gold) calc(var(--p) * 1%), rgba(255, 255, 255, 0.07) 0);
  position: relative;
  transition: background .6s;
}
.ring::before { content: ""; position: absolute; inset: 9px; border-radius: 50%; background: var(--surface); }
.ring span { position: relative; font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; color: var(--text); }
.campus__reset { align-self: center; }

.campus__main { padding: 28px; min-width: 0; }
.campus__kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 24px; }
.kpi {
  padding: 18px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--line);
  display: flex; flex-direction: column;
}
.kpi__value { font-family: var(--font-display); font-size: 1.8rem; font-weight: 600; }
.kpi__label { color: var(--muted); font-size: 0.82rem; }

.enrolled { display: flex; flex-direction: column; gap: 14px; }
.lesson-card {
  --accent: var(--gold);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--line);
  animation: slideIn .45s var(--ease);
}
.lesson-card[data-area="tecnologia"] { --accent: var(--blue); }
.lesson-card .course__icon { width: 46px; height: 46px; }
.lesson-card__title { font-weight: 600; }
.lesson-card__meta { font-size: 0.82rem; color: var(--muted); margin-top: 2px; }
.progress {
  height: 8px; margin-top: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}
.progress__bar {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 55%, white));
  transition: width .7s var(--ease);
}
.lesson-card__pct { font-size: 0.8rem; color: var(--muted); margin-top: 6px; }
.lesson-card__actions { display: flex; gap: 8px; }
.lesson-card.is-complete .progress__bar { background: var(--green); }

.empty {
  text-align: center;
  padding: 48px 24px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--muted);
}
.empty h3 { color: var(--text); font-size: 1.15rem; margin-bottom: 8px; }
.empty .btn { margin-top: 18px; }

.badges { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; }
.badge {
  padding: 22px 16px;
  text-align: center;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--line);
  opacity: .45;
  filter: grayscale(1);
  transition: opacity .3s, filter .3s, border-color .3s;
}
.badge.is-earned { opacity: 1; filter: none; border-color: rgba(217, 178, 106, 0.45); }
.badge__icon { font-size: 2rem; line-height: 1; margin-bottom: 10px; }
.badge h4 { font-size: 0.95rem; }
.badge p { font-size: 0.78rem; color: var(--muted); margin-top: 4px; }

/* ---------- Contacto ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact__list { list-style: none; padding: 0; margin: 32px 0 0; display: flex; flex-direction: column; gap: 16px; }
.contact__list li { display: flex; align-items: center; gap: 12px; color: var(--muted); word-break: break-word; }
.contact__list svg { width: 22px; height: 22px; color: var(--gold); flex-shrink: 0; }

.form {
  padding: 32px;
  border-radius: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 18px;
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 0.85rem; font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: var(--bg-2);
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
  transition: border-color .2s, box-shadow .2s;
  resize: vertical;
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 55%, calc(100% - 15px) 55%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(217, 178, 106, 0.18); }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: #ff7a7a; }
.field__error { color: #ff9a9a; font-size: 0.78rem; min-height: 1em; }
.form__success { padding: 14px; border-radius: 12px; background: rgba(79, 209, 165, 0.1); border: 1px solid rgba(79, 209, 165, 0.35); color: var(--green); font-size: 0.92rem; }

/* ---------- Footer ---------- */
.footer { padding: 32px 0; border-top: 1px solid var(--line); }
.footer__inner { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; color: var(--muted); font-size: 0.85rem; }
.brand--small .brand__text { font-size: 1rem; color: var(--text); }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 16px; visibility: hidden; }
.modal.is-open { visibility: visible; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(5, 7, 12, 0.72); backdrop-filter: blur(6px); opacity: 0; transition: opacity .3s; }
.modal.is-open .modal__backdrop { opacity: 1; }
.modal__dialog {
  position: relative;
  width: min(640px, 100%);
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  border-radius: 22px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  transform: translateY(20px) scale(.98);
  opacity: 0;
  transition: transform .35s var(--ease), opacity .3s;
}
.modal.is-open .modal__dialog { transform: none; opacity: 1; }
.modal__close {
  position: absolute; top: 16px; right: 16px;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--bg-2);
}
.modal__close svg { width: 16px; height: 16px; }
.modal__body { padding: 36px 32px 32px; }
.modal__body .course__icon { margin-bottom: 18px; }
.modal__body h3 { font-family: var(--font-display); font-size: 1.7rem; padding-right: 40px; }
.modal__body > p { color: var(--muted); margin-top: 10px; }
.syllabus { list-style: none; padding: 0; margin: 24px 0; display: flex; flex-direction: column; gap: 10px; counter-reset: mod; }
.syllabus li {
  counter-increment: mod;
  display: flex; gap: 14px; align-items: flex-start;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  font-size: 0.93rem;
}
.syllabus li::before {
  content: counter(mod, decimal-leading-zero);
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--accent, var(--gold));
  flex-shrink: 0;
}
.modal__meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 20px; }
.modal__meta div { padding: 12px; border-radius: 12px; background: var(--bg-2); border: 1px solid var(--line); }
.modal__meta span { display: block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.modal__meta strong { font-size: 0.92rem; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%; bottom: 24px;
  z-index: 120;
  max-width: calc(100% - 32px);
  padding: 14px 20px;
  border-radius: 14px;
  background: var(--text);
  color: var(--bg);
  font-weight: 500;
  font-size: 0.92rem;
  box-shadow: var(--shadow);
  transform: translate(-50%, 140%);
  opacity: 0;
  visibility: hidden;
  transition: transform .4s var(--ease), opacity .3s, visibility .4s;
}
.toast.is-visible { transform: translate(-50%, 0); opacity: 1; visibility: visible; }

/* ---------- Enlaces de contacto ---------- */
.contact__list a { color: var(--text); transition: color .2s; }
.contact__list a:hover { color: var(--gold-2); }
.contact__badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  color: #25d366;
  background: rgba(37, 211, 102, 0.12);
  border: 1px solid rgba(37, 211, 102, 0.35);
  vertical-align: middle;
}

/* ---------- Botón flotante WhatsApp ---------- */
.wa-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 0;
  height: 60px;
  padding: 0 15px;
  border-radius: 999px;
  background: linear-gradient(145deg, #2fe377, #25d366 45%, #1ebe5a);
  color: #fff;
  box-shadow:
    0 12px 28px -8px rgba(37, 211, 102, 0.55),
    0 6px 14px -6px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), gap .35s var(--ease);
  animation: waIn .6s var(--ease) .8s both;
}
.wa-float::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 2px solid rgba(37, 211, 102, 0.6);
  animation: waPulse 2.6s ease-out 1.6s infinite;
  pointer-events: none;
}
.wa-float svg { width: 30px; height: 30px; flex-shrink: 0; }
.wa-float__label {
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  font-weight: 600;
  font-size: 0.95rem;
  transition: max-width .35s var(--ease);
}
.wa-float:hover,
.wa-float:focus-visible {
  transform: translateY(-3px);
  gap: 10px;
  box-shadow:
    0 18px 36px -10px rgba(37, 211, 102, 0.7),
    0 8px 18px -8px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.wa-float:hover .wa-float__label,
.wa-float:focus-visible .wa-float__label { max-width: 120px; }
.wa-float:focus-visible { outline-color: #25d366; }

@keyframes waIn { from { opacity: 0; transform: translateY(20px) scale(.8); } to { opacity: 1; transform: none; } }
@keyframes waPulse {
  0% { transform: scale(1); opacity: .8; }
  70%, 100% { transform: scale(1.35); opacity: 0; }
}

/* ---------- Animaciones ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
@keyframes slideIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
  .campus { grid-template-columns: 1fr; }
  .campus__side { border-right: 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 1fr auto; align-items: center; }
  .campus__nav { flex-direction: row; grid-column: 1 / -1; }
  .campus__summary { grid-row: 1; grid-column: 2; margin: 0; flex-direction: row; }
  .ring { width: 72px; height: 72px; }
  .ring::before { inset: 7px; }
  .ring span { font-size: 1.05rem; }
  .campus__reset { grid-column: 1 / -1; justify-self: start; }
}

@media (max-width: 1100px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: fixed;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    background: rgba(10, 13, 20, 0.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s, transform .25s var(--ease), visibility .25s;
  }
  .nav__menu.is-open { opacity: 1; transform: none; visibility: visible; }
  .nav__link { padding: 14px 12px; font-size: 1rem; border-radius: 10px; }
  .nav__link.is-active { background: rgba(217, 178, 106, 0.1); }
  .nav__link.is-active::after { display: none; }
  .nav__cta { margin: 8px 0 0; }

}

@media (max-width: 880px) {
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; gap: 36px; }
  .section { padding: 80px 0; }
}

@media (max-width: 600px) {
  .brand__text { font-size: 1rem; }
  .hero { padding-top: 104px; }
  .hero__actions .btn { width: 100%; }
  .courses { grid-template-columns: 1fr; }
  .course { padding: 22px; }
  .steps { grid-template-columns: 1fr; }
  .campus__main { padding: 18px; }
  .campus__kpis { grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
  .kpi { padding: 12px; }
  .kpi__value { font-size: 1.4rem; }
  .kpi__label { font-size: 0.72rem; line-height: 1.3; }
  .lesson-card { grid-template-columns: auto 1fr; padding: 16px; gap: 14px; }
  .lesson-card__actions { grid-column: 1 / -1; }
  .lesson-card__actions .btn { flex: 1; }
  .form { padding: 22px; }
  .form__row { grid-template-columns: 1fr; }
  .modal__body { padding: 28px 20px 22px; }
  .modal__meta { grid-template-columns: 1fr; }
  .wa-float { right: 16px; bottom: 16px; height: 56px; padding: 0 13px; }
  .wa-float svg { width: 30px; height: 30px; }
  .toast { bottom: 88px; }
}