/* =============================================================
   Spanglish · Academia de Inglés — hoja de estilos principal
   Mobile-first. Sin frameworks ni dependencias externas.
   ============================================================= */

:root {
  --navy: #10275a;
  --navy-deep: #0a1a3d;
  --navy-soft: #1b3a7a;
  --red: #d8232a;
  --red-dark: #b81c22;
  --gold: #f6c325;
  --sky: #7fa8dc;
  --sky-soft: #eef3fb;
  --white: #ffffff;
  --ink: #17233d;
  --ink-mute: #4d5a76;
  --line: #dfe6f2;
  --wa: #128c46;

  --wrap: 1140px;
  --radius: 14px;
  --radius-lg: 26px;
  --shadow: 0 8px 24px rgba(16, 39, 90, .08);

  --font: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --step-0: clamp(1rem, .96rem + .2vw, 1.075rem);
  --step-1: clamp(1.15rem, 1.08rem + .35vw, 1.35rem);
  --step-2: clamp(1.5rem, 1.3rem + .9vw, 2.1rem);
  --step-3: clamp(2rem, 1.55rem + 2.1vw, 3.4rem);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
}

img, svg { max-width: 100%; }
img { height: auto; display: block; }

h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; color: var(--navy); letter-spacing: -.015em; }
p { margin: 0 0 1rem; }
ul { margin: 0; padding: 0; list-style: none; }

a { color: var(--navy); }
a:hover { color: var(--red); }

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 1rem; top: -100px;
  z-index: 200; background: var(--navy); color: var(--white);
  padding: .7rem 1.1rem; border-radius: 0 0 8px 8px;
  text-decoration: none; font-weight: 600;
  transition: top .15s ease;
}
.skip-link:focus { top: 0; color: var(--white); }

.anchor-top { display: block; position: relative; height: 0; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  padding: .85rem 1.55rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--red); color: var(--white); border-color: var(--red); }
.btn-primary:hover { background: var(--red-dark); border-color: var(--red-dark); color: var(--white); }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: var(--white); }
.btn-sm { padding: .6rem 1.15rem; font-size: .95rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.1rem; }
.btn-wa { background: var(--wa); color: var(--white); border-color: var(--wa); }
.btn-wa:hover { background: #0e7339; border-color: #0e7339; color: var(--white); }
.btn-gold { background: var(--gold); border-color: var(--gold); color: var(--navy-deep); }
.btn-gold:hover { background: #ffd54b; border-color: #ffd54b; color: var(--navy-deep); }
.wa-icon { width: 22px; height: 22px; flex: none; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .7rem 0;
}
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand-logo { width: 46px; height: 46px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-weight: 800; font-size: 1.22rem; letter-spacing: .02em; color: var(--navy);
}
.brand-name em { font-style: normal; color: var(--red); }
.brand-tag {
  font-size: .62rem; letter-spacing: .13em; text-transform: uppercase;
  color: var(--ink-mute); font-weight: 600;
}
@media (max-width: 26rem) { .brand-tag { display: none; } }

.nav-toggle {
  width: 46px; height: 46px; display: grid; place-items: center;
  background: var(--white); border: 1px solid var(--line); border-radius: 12px;
  cursor: pointer;
}
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after {
  content: ""; display: block; width: 20px; height: 2px;
  background: var(--navy); border-radius: 2px; transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle-bars::before { transform: translateY(-6px); }
.nav-toggle-bars::after { transform: translateY(4px); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: rotate(-45deg) translateY(1px); }

.site-nav {
  display: none;
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: .6rem 1.25rem 1.4rem;
  box-shadow: var(--shadow);
}
.site-nav.is-open { display: block; }
.site-nav ul { display: flex; flex-direction: column; }
.site-nav a {
  display: block; padding: .75rem .25rem;
  text-decoration: none; font-weight: 600; color: var(--navy);
  border-bottom: 1px solid var(--line);
}
.site-nav a[aria-current="true"] { color: var(--red); }
.nav-cta { margin-top: 1rem; width: 100%; }

@media (min-width: 62rem) {
  .nav-toggle { display: none; }
  .site-nav {
    display: flex; align-items: center; gap: 1.6rem;
    position: static; padding: 0; border: 0; box-shadow: none; background: none;
  }
  .site-nav ul { flex-direction: row; gap: 1.5rem; }
  .site-nav a { padding: .35rem 0; border-bottom: 2px solid transparent; }
  .site-nav a:hover { border-bottom-color: var(--red); color: var(--red); }
  .site-nav a[aria-current="true"] { border-bottom-color: var(--red); }
  .nav-cta { margin: 0; width: auto; border-bottom: 0 !important; color: var(--white) !important; }
  .nav-cta:hover { border-bottom-color: transparent !important; }
}

/* ---------- Tipografía de sección ---------- */
.eyebrow {
  font-size: .75rem; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--red); margin-bottom: .6rem;
}
.eyebrow--light { color: var(--gold); }
.section-title { font-size: var(--step-2); max-width: 20ch; }
.section-lead { font-size: var(--step-1); color: var(--ink-mute); max-width: 58ch; }

.section { padding: clamp(3.25rem, 7vw, 5.5rem) 0; }
.section--soft { background: var(--sky-soft); position: relative; overflow: hidden; }
.section--soft::before {
  content: ""; position: absolute; z-index: 0; pointer-events: none;
  width: 30rem; height: 30rem; border-radius: 50%; top: -11rem; right: -11rem;
  background: radial-gradient(circle, rgba(127, 168, 220, .28) 0%, rgba(127, 168, 220, 0) 70%);
}
.section--soft > .wrap { position: relative; z-index: 1; }
.section--navy { background: var(--navy); color: #e7eefb; }
.section--navy .section-title { color: var(--white); max-width: 24ch; }
.section--navy .section-lead { color: #c6d4ee; }
.section-foot { margin-top: 2.25rem; }

/* Resalte tipográfico puntual */
.hl-gold { background: linear-gradient(transparent 62%, rgba(246, 195, 37, .55) 0); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(2.75rem, 7vw, 5rem) 0 clamp(3rem, 7vw, 5.5rem);
  background:
    radial-gradient(65% 105% at 96% 10%, #dbe9fb 0%, rgba(255, 255, 255, 0) 65%),
    linear-gradient(110deg, #fff 0%, #fff 55%, #f4f8ff 100%);
  overflow: hidden;
}
.hero-inner { display: grid; gap: 2.5rem; }
.hero-title { font-size: var(--step-3); font-weight: 800; margin-bottom: .35em; }
.hero-title .accent { color: var(--red); display: inline-block; }
.hero-lead { font-size: var(--step-1); font-weight: 600; color: var(--navy); max-width: 26ch; }

.credential {
  display: inline-flex; align-items: baseline; gap: .45rem; flex-wrap: wrap;
  background: var(--white); border: 1px solid var(--line);
  border-left: 5px solid var(--gold);
  border-radius: 0 10px 10px 0;
  padding: .55rem .95rem;
  color: var(--ink-mute); font-size: .95rem;
}
.credential-num { font-weight: 800; color: var(--navy); font-size: 1.05rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.6rem 0 1rem; }
.hero-note {
  font-size: .85rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--ink-mute); font-weight: 600; margin: 0;
}

/* Ilustración principal del hero */
.hero-visual { position: relative; display: grid; place-items: center; min-height: 300px; isolation: isolate; }
.hero-visual > img { position: relative; z-index: 2; width: min(100%, 490px); filter: drop-shadow(0 18px 18px rgba(16, 39, 90, .13)); }
.hero-sticker {
  position: absolute; z-index: 4; left: 4%; top: -2%; display: inline-flex; align-items: center;
  gap: .45rem; min-width: 112px; padding: .55rem .7rem; border: 2px solid var(--navy);
  border-radius: 50%; background: var(--gold); color: var(--navy-deep); transform: rotate(-9deg);
  box-shadow: 0 6px 0 var(--navy); font-weight: 800; line-height: 1;
}
.hero-sticker strong { font-size: 2rem; letter-spacing: -.08em; }
.hero-sticker span { font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; }

@media (min-width: 56rem) {
  .hero-inner { grid-template-columns: 1.15fr .85fr; align-items: center; gap: 3.5rem; }
  .hero-visual { min-height: 440px; }
  .hero-sticker { left: -3%; top: 2%; }
}

/* ---------- Rejillas ---------- */
.grid { display: grid; gap: 1.25rem; }
@media (min-width: 40rem) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 64rem) { .grid-4 { grid-template-columns: repeat(4, 1fr); } }

/* ---------- Clases ---------- */
.clases-intro { display: grid; gap: 1.75rem; align-items: center; margin-bottom: .5rem; }
.clases-visual { display: flex; justify-content: center; }
.clases-visual img { width: min(220px, 60%); }
@media (min-width: 56rem) {
  .clases-intro { grid-template-columns: 1.5fr .5fr; gap: 3rem; }
}
.course-list { margin-top: 2.5rem; }
.course {
  padding: 1.6rem 1.5rem 1.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: border-color .18s ease, transform .18s ease;
}
.course:hover { border-color: var(--sky); transform: translateY(-3px); }
.course h3 { font-size: 1.2rem; margin-bottom: .4rem; }
.course p { margin: 0; color: var(--ink-mute); font-size: .96rem; }
.course-icon {
  display: grid; place-items: center;
  width: 52px; height: 52px; border-radius: 50%;
  margin-bottom: 1.1rem; color: var(--white);
}
.course-icon svg { width: 26px; height: 26px; }
.course-icon--navy { background: var(--navy); }
.course-icon--red { background: var(--red); }
.course-icon--gold { background: var(--gold); color: var(--navy-deep); }
.course-icon--sky { background: var(--sky); color: var(--navy-deep); }

/* ---------- Por qué ---------- */
.reasons { margin-top: 2.5rem; }
.reasons li {
  padding-top: 1.25rem;
  border-top: 3px solid var(--gold);
}
.reasons h3 { color: var(--white); font-size: 1.12rem; margin-bottom: .35rem; }
.reasons p { color: #c6d4ee; font-size: .95rem; margin: 0; }
.reason-mark {
  display: flex; align-items: center;
  height: 40px; margin-bottom: .55rem; color: var(--gold);
}
.reason-mark svg { width: 32px; height: 32px; }
.reason-num {
  font-size: 2.35rem; font-weight: 800;
  color: var(--gold); line-height: 1; letter-spacing: -.03em;
}

/* ---------- Adultos ---------- */
.adults { display: grid; gap: 2.5rem; }
@media (min-width: 56rem) {
  .adults { grid-template-columns: 1.3fr .7fr; align-items: center; gap: 3.5rem; }
}
.ticks { margin: 1.5rem 0; display: grid; gap: .6rem; }
.ticks li { position: relative; padding-left: 1.9rem; color: var(--ink-mute); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .45em;
  width: 11px; height: 6px;
  border-left: 2.5px solid var(--red); border-bottom: 2.5px solid var(--red);
  transform: rotate(-45deg);
}
.pill-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
.pill {
  background: var(--sky-soft); color: var(--navy);
  border: 1px solid var(--line);
  border-radius: 999px; padding: .35rem .95rem;
  font-size: .88rem; font-weight: 600;
}
.note {
  font-weight: 600; color: var(--navy);
  border-left: 4px solid var(--sky); padding-left: .85rem;
  margin-bottom: 1.6rem;
}
.note--accent { border-left-color: var(--gold); }
.note--accent strong { color: var(--red); }
.adults-aside {
  background: var(--navy); color: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.2rem 2rem;
  position: relative;
}
.adults-aside-visual { display: flex; justify-content: center; margin-bottom: 1.5rem; }
.adults-aside-visual img {
  width: min(150px, 55%);
  background: var(--sky-soft);
  border-radius: 999px;
  padding: .9rem;
}
.quote-mark {
  font-size: 3.5rem; line-height: .6; color: var(--gold);
  margin: 0 0 .5rem; font-weight: 800;
}
.quote { font-size: 1.3rem; font-weight: 700; line-height: 1.35; margin-bottom: .9rem; }
.quote-by {
  margin: 0; font-size: .78rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--sky);
}

/* ---------- Empresas ---------- */
.section--business { position: relative; overflow: hidden; }
.section--business::before {
  content: ""; position: absolute; z-index: 0; pointer-events: none;
  width: 34rem; height: 34rem; border-radius: 50%; bottom: -14rem; left: -12rem;
  background: radial-gradient(circle, rgba(246, 195, 37, .12) 0%, rgba(246, 195, 37, 0) 70%);
}
.section--business > .wrap { position: relative; z-index: 1; }

.business-layout { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 56rem) {
  .business-layout { grid-template-columns: 1.2fr .8fr; gap: 3.5rem; }
}
.business-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 1rem; margin: 1.6rem 0 1.3rem; }
.business-link { color: var(--white); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.business-link:hover { color: var(--gold); }
.business-note {
  display: inline-flex; align-items: center; gap: .5rem; flex-wrap: wrap;
  padding: .6rem 1rem; border-radius: 10px;
  background: rgba(246, 195, 37, .1); border-left: 4px solid var(--gold);
  color: #f1f5ff; font-size: .92rem;
}
.business-note strong { color: var(--gold); }

.business-visual { text-align: center; }
.business-tag {
  display: inline-block; margin-bottom: 1.2rem; padding: .4rem .95rem;
  border-radius: 999px; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .22);
  color: var(--gold); font-size: .74rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
}
.business-visual figure {
  position: relative; width: min(100%, 340px); margin: 0 auto; display: grid; place-items: center;
}
.business-visual figure::before {
  content: ""; position: absolute; z-index: 0;
  width: 104%; height: 104%; border-radius: 50%;
  background: var(--white);
  box-shadow: 0 16px 26px rgba(0, 0, 0, .28);
}
.business-visual img { position: relative; z-index: 1; width: 100%; margin-inline: auto; }

.business-offerings { margin-top: 3rem; }
.business-card {
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius); padding: 1.5rem 1.4rem;
}
.business-card-num { font-size: .78rem; font-weight: 800; color: var(--gold); letter-spacing: .08em; }
.business-card h3 { color: var(--white); font-size: 1.05rem; margin: .6rem 0 .4rem; }
.business-card p { color: #c6d4ee; font-size: .92rem; margin: 0; }

/* ---------- María ---------- */
.about { display: grid; gap: 2rem; }
@media (min-width: 56rem) {
  .about { grid-template-columns: 300px 1fr; align-items: center; gap: 3.5rem; }
}
.about-photo {
  width: min(260px, 70vw);
  margin-inline: auto;
  display: grid; place-items: center;
  position: relative;
}
.about-photo::before {
  content: ""; position: absolute; inset: 6% 10% 10% 6%;
  border-radius: 50%; background: var(--sky-soft); z-index: -1;
}
.about-photo::after {
  content: ""; position: absolute; inset: -6px auto auto -6px;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--gold);
}
.about-photo img { width: 100%; height: auto; }
.about-copy p { color: var(--ink-mute); max-width: 62ch; }
.about-signature {
  font-weight: 700; color: var(--navy); font-size: .9rem;
  letter-spacing: .04em; text-transform: uppercase;
}

/* ---------- CTA final ---------- */
.cta-final {
  background: var(--navy);
  color: var(--white);
  text-align: center;
}
.cta-inner { display: grid; justify-items: center; gap: .3rem; }
.cta-title { color: var(--white); font-size: var(--step-2); margin-bottom: .2em; }
.cta-lead { color: #c6d4ee; max-width: 46ch; font-size: var(--step-1); margin-bottom: 1.6rem; }
.cta-phone { margin: 1.2rem 0 0; color: #c6d4ee; font-size: .95rem; }
.cta-phone a { color: var(--white); font-weight: 700; }
.cta-phone a:hover { color: var(--gold); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-deep); color: #c6d4ee;
  padding: 3rem 0 1.5rem;
  font-size: .95rem;
}
.footer-inner { display: grid; gap: 2rem; }
@media (min-width: 48rem) {
  .footer-inner { grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; }
}
.site-footer p { margin: 0 0 .3rem; }
.site-footer a { color: var(--white); text-decoration: none; }
.site-footer a:hover { color: var(--gold); text-decoration: underline; }
.footer-name {
  font-size: 1.35rem; font-weight: 800; letter-spacing: .02em;
  color: var(--white); margin-bottom: .35rem;
}
.footer-name em { font-style: normal; color: #ff6b6b; }
.footer-title {
  font-size: .78rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--gold); margin-bottom: .8rem;
}
.social { display: grid; gap: .5rem; }
.social a { display: inline-flex; align-items: center; gap: .55rem; }
.footer-bottom {
  margin-top: 2.5rem; padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, .14);
  font-size: .82rem; color: #8fa5cc;
  display: flex; flex-wrap: wrap; gap: .5rem 1rem; justify-content: space-between; align-items: center;
}
.footer-legal { display: flex; gap: .5rem; flex-wrap: wrap; }
.footer-legal a { color: #c6d4ee; }
.footer-legal a:hover { color: var(--gold); }
.footer-legal a[aria-current="true"] { color: var(--white); text-decoration: underline; }
.footer-legal span { color: #56699a; }

/* ---------- Páginas legales ---------- */
.legal-hero {
  padding: clamp(2.5rem, 6vw, 4rem) 0 1rem;
}
.legal-hero .section-title { max-width none; }
.legal-updated {
  font-size: .85rem; color: var(--ink-mute);
}
.legal-content {
  padding: 1rem 0 clamp(3rem, 6vw, 5rem);
}
.legal-content .wrap { max-width: 72ch; }
.legal-content h2 {
  font-size: 1.35rem; margin-top: 2.4rem; padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}
.legal-content h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.legal-content h3 {
  font-size: 1.05rem; margin-top: 1.6rem; color: var(--navy);
}
.legal-content p, .legal-content li { color: var(--ink-mute); }
.legal-content ul { margin: 0 0 1rem; padding-left: 1.2rem; list-style: disc; }
.legal-content li { margin-bottom: .4rem; }
.legal-content strong { color: var(--navy); }
.legal-content a { text-decoration: underline; }
.legal-back { margin-top: 2.5rem; }

/* ---------- WhatsApp flotante ---------- */
.wa-float {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 120;
  width: 54px; height: 54px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--wa); color: var(--white);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .22);
  transition: transform .18s ease, background-color .18s ease;
}
.wa-float:hover { background: #0e7339; color: var(--white); transform: translateY(-2px); }
@media (min-width: 48rem) { .wa-float { right: 1.75rem; bottom: 1.75rem; width: 58px; height: 58px; } }

/* ---------- Preferencias de movimiento ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  .btn:hover, .course:hover, .wa-float:hover { transform: none; }
}