/* ═══════════════════════════════════════════════════════════════
   BIGDRUMMERS · Academia de Música
   Sistema de diseño "Backstage / Setlist"
   ─ Negro escenario + rojo intenso + grano grunge sutil
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Color */
  --negro: #0a0a0b;
  --carbon: #131315;
  --humo: #1b1b1f;
  --borde: #2a2a2f;
  --rojo: #e3242b;
  --whatsapp: #2db742;
  --rojo-vivo: #ff3b42;
  --rojo-profundo: #8e1216;
  --blanco: #f5f4f2;
  --gris: #a7a4ab;
  --gris-oscuro: #6e6b72;

  /* Tipografía */
  --f-display: "Big Shoulders Display", Impact, sans-serif;
  --f-body: "Barlow", "Segoe UI", sans-serif;
  --f-mono: "Space Mono", Consolas, monospace;

  /* Layout */
  --ancho-max: 1180px;
  --radio: 4px;
  --sombra-roja: 0 0 40px rgba(227, 36, 43, 0.25);
  --transicion: 0.35s cubic-bezier(0.25, 0.6, 0.3, 1);
}

/* ── Reset ─────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  background: var(--negro);
  color: var(--blanco);
  font-family: var(--f-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Grano grunge sutil sobre toda la página */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9000;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.9'/%3E%3C/svg%3E");
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ── Accesibilidad ─────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -60px;
  left: 12px;
  z-index: 10000;
  background: var(--rojo);
  color: var(--blanco);
  padding: 0.6rem 1rem;
  font-weight: 600;
  border-radius: var(--radio);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

:focus-visible {
  outline: 2px solid var(--rojo-vivo);
  outline-offset: 3px;
}

/* ── Utilidades ────────────────────────────────────────────── */
.container {
  width: min(100% - 2.5rem, var(--ancho-max));
  margin-inline: auto;
}

.accent {
  color: var(--rojo);
}

/* Etiqueta tipo cinta de gaffer (firma estructural del sitio) */
.tape-label {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--blanco);
  background: var(--humo);
  border: 1px solid var(--borde);
  border-left: 3px solid var(--rojo);
  padding: 0.35rem 0.8rem;
  margin-bottom: 1.2rem;
  transform: rotate(-1.2deg);
  text-transform: uppercase;
}

/* ── Botones ───────────────────────────────────────────────── */
.btn {
  display: inline-block;
  font-family: var(--f-body);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.9rem 1.8rem;
  border-radius: var(--radio);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transicion), box-shadow var(--transicion),
    background-color var(--transicion), border-color var(--transicion),
    color var(--transicion);
}

.btn-solid {
  background: var(--rojo);
  color: var(--blanco);
}

.btn-solid:hover {
  background: var(--rojo-vivo);
  transform: translateY(-2px);
  box-shadow: var(--sombra-roja);
}

.btn-ghost {
  border-color: var(--gris-oscuro);
  color: var(--blanco);
}

.btn-ghost:hover {
  border-color: var(--rojo);
  color: var(--rojo-vivo);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1.1rem 2.4rem;
  font-size: 1.05rem;
}

/* ── Header ────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 11, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header.scrolled {
  background: rgba(10, 10, 11, 0.92);
  border-bottom-color: var(--borde);
}

.header-inner {
  width: min(100% - 2.5rem, var(--ancho-max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 88px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-img {
  width: 78px;
  height: 78px;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.05em;
}

.logo-text em {
  font-style: normal;
  color: var(--rojo);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--gris);
  position: relative;
  padding: 0.4rem 0;
  transition: color var(--transicion);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--rojo);
  transition: width var(--transicion);
}

.nav-link:hover {
  color: var(--blanco);
}

.nav-link:hover::after {
  width: 100%;
}

.btn-nav {
  padding: 0.65rem 1.3rem;
  font-size: 0.85rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--blanco);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: 7rem 0 5rem;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 55% center;
  transform: translateY(3%) scale(1.08);
  filter: contrast(1.08) brightness(0.95) saturate(1.05);
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
      100deg,
      rgba(10, 10, 11, 0.99) 0%,
      rgba(10, 10, 11, 0.9) 32%,
      rgba(10, 10, 11, 0.55) 62%,
      rgba(10, 10, 11, 0.15) 100%
    ),
    linear-gradient(to top, var(--negro) 0%, transparent 28%);
}

.hero-glow {
  position: absolute;
  right: -15%;
  top: 10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(
    ellipse at center,
    rgba(227, 36, 43, 0.22) 0%,
    transparent 65%
  );
  filter: blur(20px);
}

.hero-content {
  width: min(100% - 2.5rem, var(--ancho-max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 1000px) {
  .hero-content {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4rem;
  }
}

/* Formulario de clase gratis — semitransparente sobre el fondo */
.hero-form {
  background: rgba(10, 10, 11, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(245, 244, 242, 0.14);
  border-top: 3px solid var(--rojo);
  border-radius: var(--radio);
  padding: 1.8rem 1.7rem 1.5rem;
  display: grid;
  gap: 1rem;
  max-width: 420px;
  width: 100%;
  justify-self: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

@media (min-width: 1000px) {
  .hero-form {
    justify-self: end;
  }
}

.hero-form-tag {
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--rojo-vivo);
}

.hero-form-title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.9rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.3rem;
}

.form-field {
  display: grid;
  gap: 0.35rem;
}

.form-field label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gris);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font-family: var(--f-body);
  font-size: 1rem;
  color: var(--blanco);
  background: rgba(10, 10, 11, 0.55);
  border: 1px solid rgba(245, 244, 242, 0.18);
  border-radius: var(--radio);
  padding: 0.75rem 0.9rem;
  transition: border-color var(--transicion), background-color var(--transicion);
}

.form-field input::placeholder {
  color: var(--gris-oscuro);
}

.form-field select:invalid {
  color: var(--gris-oscuro);
}

.form-field select option {
  background: var(--carbon);
  color: var(--blanco);
}

.form-field textarea {
  min-height: 110px;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--rojo);
  background: rgba(10, 10, 11, 0.75);
}

.hero-form-btn {
  width: 100%;
  border: 0;
  margin-top: 0.3rem;
}

.hero-form-note {
  font-size: 0.78rem;
  color: var(--gris);
  text-align: center;
}

.hero-title {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(2.7rem, 8.5vw, 6.3rem);
  line-height: 0.92;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  margin: 0.5rem 0 1.5rem;
}

.hero-title .line {
  display: block;
}

.line-outline {
  color: transparent;
  -webkit-text-stroke: 2px var(--blanco);
}

.hero-motto {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.4vw, 1.9rem);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--blanco);
  border-left: 4px solid var(--rojo);
  padding-left: 0.8rem;
  margin: 0.4rem 0 1.4rem;
}

.hero-sub {
  max-width: 34rem;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--gris);
  margin-bottom: 2.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Ecualizador animado — firma visual */
.hero-eq {
  position: absolute;
  bottom: 0;
  right: 4%;
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 90px;
  opacity: 0.5;
}

.hero-eq span {
  width: 5px;
  background: linear-gradient(to top, var(--rojo-profundo), var(--rojo));
  animation: eq 1.1s ease-in-out infinite alternate;
  border-radius: 2px 2px 0 0;
  height: 20%;
}

.hero-eq span:nth-child(2n)  { animation-duration: 0.8s; animation-delay: 0.12s; }
.hero-eq span:nth-child(3n)  { animation-duration: 1.3s; animation-delay: 0.28s; }
.hero-eq span:nth-child(4n)  { animation-duration: 0.7s; animation-delay: 0.05s; }
.hero-eq span:nth-child(5n)  { animation-duration: 1s;   animation-delay: 0.4s; }
.hero-eq span:nth-child(7n)  { animation-duration: 0.9s; animation-delay: 0.2s; }

@keyframes eq {
  from { height: 12%; }
  to   { height: 95%; }
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.35em;
  color: var(--gris-oscuro);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  transition: color var(--transicion);
}

.hero-scroll:hover {
  color: var(--rojo-vivo);
}

.hero-scroll-line {
  width: 1px;
  height: 42px;
  background: linear-gradient(to bottom, transparent, var(--rojo));
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { transform: scaleY(0.6); opacity: 0.4; }
  50%      { transform: scaleY(1);   opacity: 1; }
}

/* ── Marquesina ────────────────────────────────────────────── */
.marquee {
  overflow: hidden;
  border-block: 1px solid var(--borde);
  background: var(--carbon);
  padding: 0.9rem 0;
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 2rem;
  width: max-content;
  animation: marquee 28s linear infinite;
}

.marquee-track span {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.12em;
  color: var(--gris-oscuro);
  white-space: nowrap;
}

.marquee-track i {
  font-style: normal;
  color: var(--rojo);
  font-size: 0.6rem;
}

@keyframes marquee {
  to { transform: translateX(-33.333%); }
}

/* ── Secciones ─────────────────────────────────────────────── */
.section {
  padding: 6rem 0;
}

.section-alt {
  background: var(--carbon);
  border-block: 1px solid var(--borde);
}

.section-head {
  max-width: 46rem;
  margin-bottom: 3.5rem;
}

.section-title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.015em;
  margin-bottom: 1rem;
}

.section-lead {
  color: var(--gris);
  font-size: 1.08rem;
}

/* ── Cursos ────────────────────────────────────────────────── */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.4rem;
}

.course-card {
  background: var(--humo);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transicion), border-color var(--transicion),
    box-shadow var(--transicion);
}

.course-card:hover {
  transform: translateY(-6px);
  border-color: var(--rojo);
  box-shadow: var(--sombra-roja);
}

.course-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(140deg, var(--humo), var(--rojo-profundo));
}

.course-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(35%) contrast(1.05) brightness(0.85);
  transition: transform 0.6s cubic-bezier(0.2, 0.6, 0.25, 1), filter 0.6s ease;
}

.course-card:hover .course-media img {
  transform: scale(1.07);
  filter: grayscale(0%) contrast(1.05) brightness(0.95);
}

.course-body {
  padding: 1.5rem 1.5rem 1.7rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  flex: 1;
}

.course-tag {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rojo-vivo);
}

.course-name {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.9rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  line-height: 1;
}

.course-desc {
  color: var(--gris);
  font-size: 0.95rem;
  flex: 1;
}

.course-link {
  display: inline-block;
  margin-top: 0.4rem;
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blanco);
  opacity: 0.85;
  transition: color var(--transicion), transform var(--transicion), opacity var(--transicion);
}

.course-link span {
  display: inline-block;
  transition: transform var(--transicion);
}

.course-link:hover {
  color: var(--rojo-vivo);
  opacity: 1;
}

.course-link:hover span {
  transform: translateX(5px);
}

.course-card-cta {
  background: linear-gradient(150deg, var(--rojo-profundo), #4d0a0d 70%);
  border-color: var(--rojo-profundo);
  justify-content: center;
}

.course-card-cta .course-body {
  gap: 1rem;
  justify-content: center;
}

.course-card-cta .course-name {
  font-size: 1.6rem;
  line-height: 1.05;
}

.course-card-cta .course-desc {
  color: rgba(245, 244, 242, 0.75);
}

.course-card-cta:hover {
  border-color: var(--rojo-vivo);
}

/* ── Quiénes somos ─────────────────────────────────────────── */
.about-section {
  position: relative;
  overflow: hidden;
  border-block: 0;
}

/* Líneas rojas en los bordes superior e inferior:
   efecto tubo de neón con destello recorriéndolas */
.about-section::before,
.about-section::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--rojo-profundo) 0%,
    var(--rojo) 30%,
    #ffb3b6 48%,
    #fff 50%,
    #ffb3b6 52%,
    var(--rojo) 70%,
    var(--rojo-profundo) 100%
  );
  background-size: 250% 100%;
  z-index: 2;
  pointer-events: none;
  animation: lineSweep 5s linear infinite;
}

.about-section::before {
  top: 0;
  box-shadow:
    0 0 10px rgba(227, 36, 43, 0.95),
    0 0 26px rgba(227, 36, 43, 0.6),
    0 0 60px rgba(227, 36, 43, 0.35),
    0 14px 34px -6px rgba(227, 36, 43, 0.45),
    0 9px 0 -2px rgba(142, 18, 22, 0.55);
}

.about-section::after {
  bottom: 0;
  animation-delay: -2.5s;
  box-shadow:
    0 0 10px rgba(227, 36, 43, 0.95),
    0 0 26px rgba(227, 36, 43, 0.6),
    0 0 60px rgba(227, 36, 43, 0.35),
    0 -14px 34px -6px rgba(227, 36, 43, 0.45),
    0 -9px 0 -2px rgba(142, 18, 22, 0.55);
}

@keyframes lineSweep {
  from {
    background-position: 250% 0;
  }
  to {
    background-position: -250% 0;
  }
}

.about-bg {
  position: absolute;
  inset: 0 0 0 -6%;
  background: url("../img/foto-academia.webp") right 30% / cover no-repeat;
}

.about-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
      100deg,
      rgba(15, 15, 17, 0.98) 0%,
      rgba(15, 15, 17, 0.92) 42%,
      rgba(15, 15, 17, 0.55) 72%,
      rgba(15, 15, 17, 0.25) 100%
    ),
    linear-gradient(to bottom, var(--carbon) 0%, transparent 12%),
    linear-gradient(to top, var(--carbon) 0%, transparent 12%);
}

.about-section .container {
  position: relative;
  z-index: 1;
}

/* Marca de agua tipográfica */
.about-watermark {
  position: absolute;
  top: -1.2rem;
  left: -0.5rem;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(4.5rem, 12vw, 11rem);
  letter-spacing: 0.08em;
  line-height: 1;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px rgba(245, 244, 242, 0.07);
  pointer-events: none;
  user-select: none;
  z-index: -1;
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}

.about-p {
  color: var(--gris);
  font-size: 1.02rem;
  margin-bottom: 1.2rem;
  max-width: 40rem;
}

.about-p strong {
  color: var(--blanco);
  font-weight: 600;
}

.about-lead {
  font-size: 1.14rem;
  color: #c9c6cd;
}

/* Cita de la casa */
.about-quote {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.12;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--blanco);
  border-left: 4px solid var(--rojo);
  padding: 0.35rem 0 0.35rem 1.1rem;
  margin: 1.9rem 0 0.4rem;
  max-width: 40rem;
}

.about-text .btn {
  margin-top: 0.6rem;
}

/* Fotografía destacada de la academia */
.about-media {
  width: 100%;
  max-width: 420px;
  justify-self: center;
  display: grid;
  gap: 1.3rem;
}

.about-btn {
  width: 100%;
  text-align: center;
}

.about-photo {
  position: relative;
  transform: rotate(1.2deg);
  border: 1px solid rgba(245, 244, 242, 0.16);
  border-top: 4px solid var(--rojo);
  border-radius: var(--radio);
  background: rgba(10, 10, 11, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 0.7rem 0.7rem 0;
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.55), 0 0 70px rgba(227, 36, 43, 0.16);
  transition: transform var(--transicion), box-shadow var(--transicion);
}

.about-photo:hover {
  transform: rotate(0.4deg) translateY(-4px);
  box-shadow: 0 28px 65px rgba(0, 0, 0, 0.6), 0 0 90px rgba(227, 36, 43, 0.28);
}

/* Cintas de gaffer en las esquinas superiores */
.about-photo::before,
.about-photo::after {
  content: "";
  position: absolute;
  top: -12px;
  width: 86px;
  height: 24px;
  background: rgba(214, 211, 216, 0.18);
  backdrop-filter: blur(2px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
  z-index: 2;
}

.about-photo::before {
  left: -18px;
  transform: rotate(-38deg);
}

.about-photo::after {
  right: -18px;
  transform: rotate(38deg);
}

.about-photo img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
  display: block;
}

.about-photo figcaption {
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  color: var(--gris);
  text-align: center;
  padding: 0.75rem 0.3rem;
}

@media (min-width: 900px) {
  .about-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4rem;
  }

  .about-media {
    justify-self: end;
    margin-top: 5.5rem;
  }
}

/* Diferenciadores: regleta estilo rack de equipos */
.about-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 4rem;
  border: 1px solid rgba(245, 244, 242, 0.14);
  border-radius: var(--radio);
  background: rgba(10, 10, 11, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
}

.about-features li {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
  padding: 1.7rem 1rem 1.5rem;
  transition: background-color var(--transicion);
}

.about-features li:nth-child(even) {
  border-left: 1px solid rgba(245, 244, 242, 0.1);
}

.about-features li:nth-child(n + 3) {
  border-top: 1px solid rgba(245, 244, 242, 0.1);
}

/* Segmento rojo superior que se enciende al pasar */
.about-features li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 34px;
  height: 3px;
  background: var(--rojo-profundo);
  transition: width var(--transicion), background-color var(--transicion),
    box-shadow var(--transicion);
}

.about-features li:hover {
  background: rgba(227, 36, 43, 0.06);
}

.about-features li:hover::before {
  width: 62px;
  background: var(--rojo);
  box-shadow: 0 0 14px rgba(227, 36, 43, 0.8);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  color: var(--rojo-vivo);
  transition: transform var(--transicion), filter var(--transicion);
}

.about-features li:hover .feature-icon {
  transform: translateY(-3px);
  filter: drop-shadow(0 0 8px rgba(227, 36, 43, 0.7));
}

.about-features p {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--blanco);
  line-height: 1.35;
}

@media (min-width: 720px) {
  .about-features {
    grid-template-columns: repeat(4, 1fr);
  }

  .about-features li:nth-child(n + 2) {
    border-left: 1px solid rgba(245, 244, 242, 0.1);
  }

  .about-features li:nth-child(n + 3) {
    border-top: 0;
  }
}

/* ── Experiencia ───────────────────────────────────────────── */
.exp-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: center;
}

.exp-list {
  margin: 1.8rem 0 2.2rem;
  display: grid;
  gap: 0.9rem;
}

.exp-list li {
  color: var(--gris);
  font-size: 0.98rem;
  padding-left: 1.4rem;
  position: relative;
}

.exp-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  background: var(--rojo);
  transform: rotate(45deg);
}

.exp-list strong {
  color: var(--blanco);
}

.exp-media {
  position: relative;
  min-height: 380px;
}

.exp-photo {
  position: absolute;
  overflow: hidden;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
}

.exp-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(30%) contrast(1.08) brightness(0.85);
}

.exp-photo-a {
  width: 68%;
  height: 78%;
  top: 0;
  left: 0;
  transform: rotate(-1.5deg);
}

.exp-photo-b {
  width: 52%;
  height: 60%;
  bottom: 0;
  right: 0;
  transform: rotate(2deg);
  outline: 3px solid var(--negro);
}

.exp-sticker {
  position: absolute;
  top: -14px;
  right: 8%;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--blanco);
  background: var(--rojo);
  padding: 0.45rem 0.9rem;
  transform: rotate(3deg);
  box-shadow: var(--sombra-roja);
}

/* ── Profesores: mapa de equipo con la coordinadora al centro ── */
.team-section {
  position: relative;
  overflow: hidden;
}

/* Ondas sonoras concéntricas emanando del centro del mapa.
   Se revelan del centro hacia afuera cuando la sección entra en pantalla */
.team-section::before {
  content: "";
  position: absolute;
  inset: -25%;
  background: repeating-radial-gradient(
    circle at 50% 55%,
    rgba(227, 36, 43, 0.08) 0,
    rgba(227, 36, 43, 0.08) 1.5px,
    transparent 1.5px,
    transparent 95px
  );
  opacity: 0;
  -webkit-mask-image: radial-gradient(circle at 50% 55%, #000 55%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 55%, #000 55%, transparent 78%);
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: 50% 55%;
  mask-position: 50% 55%;
  -webkit-mask-size: 0% 0%;
  mask-size: 0% 0%;
  pointer-events: none;
}

.team-section.play::before {
  animation: ringsReveal 2s cubic-bezier(0.16, 1, 0.3, 1) both,
    wavePulse 9s ease-in-out 2.2s infinite;
}

@keyframes ringsReveal {
  from {
    opacity: 0;
    -webkit-mask-size: 10% 10%;
    mask-size: 10% 10%;
  }
  to {
    opacity: 1;
    -webkit-mask-size: 320% 320%;
    mask-size: 320% 320%;
  }
}

@keyframes wavePulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.06);
    opacity: 0.8;
  }
}

/* Luces de escenario: foco central y resplandores ambientales */
.team-section::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease 0.3s;
  background: radial-gradient(
      ellipse 55% 45% at 50% 52%,
      rgba(227, 36, 43, 0.14) 0%,
      transparent 65%
    ),
    radial-gradient(
      ellipse 45% 40% at 0% 0%,
      rgba(142, 18, 22, 0.28) 0%,
      transparent 70%
    ),
    radial-gradient(
      ellipse 45% 40% at 100% 100%,
      rgba(142, 18, 22, 0.24) 0%,
      transparent 70%
    );
  pointer-events: none;
}

.team-section.play::after {
  opacity: 1;
}

.team-section .container {
  position: relative;
  z-index: 1;
}

.team-map {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2.4rem 1.4rem;
  max-width: 1000px;
  margin-inline: auto;
}

.team-lines {
  display: none;
}

.team-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.2rem;
  width: 172px;
}

.team-avatar {
  position: relative;
  width: 142px;
  height: 142px;
  border-radius: 50%;
  background: var(--humo);
  margin-bottom: 0.8rem;
  transition: transform var(--transicion);
}

/* Aro exterior punteado, como aro de tambor, girando lentamente */
.team-avatar::before {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 2px dashed rgba(227, 36, 43, 0.55);
  animation: ringSpin 40s linear infinite;
}

@keyframes ringSpin {
  to {
    transform: rotate(360deg);
  }
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: 50%;
  border: 7px solid var(--rojo);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.55), 0 0 18px rgba(227, 36, 43, 0.35),
    inset 0 0 0 2px var(--negro);
  filter: grayscale(50%) contrast(1.05) brightness(0.9);
  transition: filter 0.5s ease, border-color var(--transicion),
    box-shadow var(--transicion);
}

.team-node:hover .team-avatar {
  transform: translateY(-5px);
}

.team-node:hover .team-avatar::before {
  border-color: rgba(255, 59, 66, 0.9);
  animation-duration: 10s;
}

.team-node:hover .team-avatar img {
  filter: grayscale(0%) brightness(1);
  border-color: var(--rojo-vivo);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.6), 0 0 45px rgba(227, 36, 43, 0.5);
}

.team-role {
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rojo-vivo);
}

.team-name {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.35rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  line-height: 1.05;
}

.team-bio {
  display: none;
}

/* Placa tipo credencial backstage bajo cada círculo */
.team-plate {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  background: rgba(10, 10, 11, 0.74);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(245, 244, 242, 0.14);
  border-top: 2px solid var(--rojo);
  border-radius: 5px;
  padding: 0.6rem 1rem 0.7rem;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.45);
  transition: border-color var(--transicion), box-shadow var(--transicion);
}

.team-node:hover .team-plate {
  border-color: rgba(227, 36, 43, 0.55);
  border-top-color: var(--rojo-vivo);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 30px rgba(227, 36, 43, 0.18);
}

/* Botón Ver perfil: aparece al pasar el mouse (siempre visible en móvil) */
.team-btn {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blanco);
  background: var(--rojo);
  border-radius: 3px;
  padding: 0 0.85rem;
  transition: max-height 0.35s ease, opacity 0.35s ease, margin 0.35s ease,
    padding 0.35s ease, background-color var(--transicion);
}

.team-node:hover .team-btn,
.team-node:focus-within .team-btn {
  max-height: 40px;
  opacity: 1;
  margin-top: 0.45rem;
  padding: 0.4rem 0.85rem;
}

.team-btn:hover {
  background: var(--rojo-vivo);
}

/* Nodo central: coordinadora */
.team-node-center {
  width: 260px;
}

.team-node-center .team-avatar {
  width: 188px;
  height: 188px;
}

.team-node-center .team-avatar::before {
  inset: -12px;
  border-width: 3px;
  border-color: rgba(227, 36, 43, 0.7);
}

.team-node-center .team-avatar img {
  box-shadow: 0 0 50px rgba(227, 36, 43, 0.4), 0 12px 35px rgba(0, 0, 0, 0.55),
    inset 0 0 0 2px var(--negro);
}

.team-node-center .team-name {
  font-size: 1.7rem;
}

.team-node-center .team-bio {
  display: block;
  font-size: 0.83rem;
  color: var(--gris);
  margin-top: 0.3rem;
  max-width: 230px;
}

.team-plate-center {
  padding: 0.8rem 1.2rem 0.95rem;
}

/* ── Red viva: estados de activación (los orquesta js/main.js) ── */
.team-map {
  --pop-blur: 6px;
}

.team-map .team-avatar,
.team-map .team-plate {
  opacity: 0;
}

.team-node.active .team-avatar {
  opacity: 1;
  animation: nodePop 0.8s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.team-node.active .team-plate {
  opacity: 1;
  animation: plateRise 0.5s ease 0.15s backwards;
}

@keyframes nodePop {
  0% {
    opacity: 0;
    transform: scale(0.75);
    filter: blur(var(--pop-blur, 6px));
  }
  60% {
    transform: scale(1.05);
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

@keyframes plateRise {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* La coordinadora entra primero, con desenfoque y sobreimpulso */
.team-node-center.active .team-avatar {
  animation: coordPop 0.85s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.team-node-center.active .team-plate {
  animation-delay: 0.35s;
}

@keyframes coordPop {
  0% {
    opacity: 0;
    transform: scale(0.75);
    filter: blur(10px);
  }
  62% {
    transform: scale(1.04);
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

/* Destello sutil cuando el pulso alcanza al profesor */
.team-avatar::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  box-shadow: 0 0 36px 8px rgba(255, 59, 66, 0.7);
  opacity: 0;
  pointer-events: none;
}

.team-node.active .team-avatar::after {
  animation: flashGlow 0.7s ease-out both;
}

@keyframes flashGlow {
  0% {
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

/* Respiración del núcleo al terminar la secuencia */
.team-map.done .team-node-center .team-avatar {
  animation: coordBreath 5.5s ease-in-out infinite;
}

@keyframes coordBreath {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.015);
  }
}

/* Partículas ambientales (las crea js/main.js) */
.team-dust {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(255, 90, 96, 0.55);
  box-shadow: 0 0 6px rgba(227, 36, 43, 0.65);
  pointer-events: none;
  opacity: 0;
  animation: dustFloat var(--dur, 14s) linear var(--delay, 0s) infinite;
}

@keyframes dustFloat {
  0% {
    transform: translateY(24px);
    opacity: 0;
  }
  15% {
    opacity: var(--o, 0.4);
  }
  85% {
    opacity: var(--o, 0.4);
  }
  100% {
    transform: translateY(-90px);
    opacity: 0;
  }
}

/* Parallax de profundidad con el mouse (solo puntero fino en escritorio) */
@media (hover: hover) and (pointer: fine) and (min-width: 900px) {
  .team-section::before,
  .team-section::after {
    translate: calc(var(--mx, 0) * 4px) calc(var(--my, 0) * 4px);
  }

  .team-lines {
    translate: calc(var(--mx, 0) * 3px) calc(var(--my, 0) * 3px);
  }

  .team-node {
    translate: calc(var(--mx, 0) * 5px) calc(var(--my, 0) * 5px);
  }

  .team-node-center {
    translate: calc(var(--mx, 0) * 2px) calc(var(--my, 0) * 2px);
  }
}

@media (max-width: 899px) {
  .team-map {
    --pop-blur: 2px;
  }

  .team-node-center {
    flex-basis: 100%;
    order: -1;
  }

  .team-btn {
    max-height: 40px;
    opacity: 1;
    margin-top: 0.45rem;
    padding: 0.4rem 0.85rem;
  }
}

@media (min-width: 900px) {
  .team-map {
    display: block;
    aspect-ratio: 1000 / 760;
  }

  .team-lines {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
  }

  /* Trazo punteado permanente de cada conexión */
  .team-lines .track {
    fill: none;
    stroke: rgba(227, 36, 43, 0.45);
    stroke-width: 1.6;
    stroke-dasharray: 6 9;
    opacity: 0;
    transition: stroke 0.3s ease;
  }

  .team-link.drawn .track {
    opacity: 1;
    animation: trackIn 0.5s ease 0.3s backwards;
  }

  @keyframes trackIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  .team-map.done .team-link .track {
    animation: dashFlow 30s linear infinite;
  }

  @keyframes dashFlow {
    to {
      stroke-dashoffset: -600;
    }
  }

  /* Línea sólida que se dibuja del centro al profesor y se desvanece */
  .team-lines .draw {
    fill: none;
    stroke: rgba(255, 73, 80, 0.9);
    stroke-width: 2.2;
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    opacity: 0;
  }

  .team-link.drawn .draw {
    animation: lineDraw 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  @keyframes lineDraw {
    0% {
      stroke-dashoffset: 1;
      opacity: 1;
    }
    60% {
      stroke-dashoffset: 0;
      opacity: 1;
    }
    100% {
      stroke-dashoffset: 0;
      opacity: 0;
    }
  }

  .team-lines .endpoint {
    fill: var(--rojo);
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .team-link.drawn .endpoint {
    opacity: 0.85;
  }

  /* Pulso luminoso que recorre la conexión */
  .team-lines .pulse {
    fill: #ff5a60;
    filter: drop-shadow(0 0 6px rgba(255, 59, 66, 0.9));
    opacity: 0;
    offset-path: var(--path);
    offset-distance: 0%;
    offset-rotate: 0deg;
    transition: offset-distance 0.55s linear, opacity 0.25s ease;
    will-change: offset-distance;
  }

  .team-link.fire .pulse {
    animation: pulseTravel 0.6s linear forwards;
  }

  @keyframes pulseTravel {
    0% {
      offset-distance: 0%;
      opacity: 1;
    }
    80% {
      opacity: 1;
    }
    100% {
      offset-distance: 100%;
      opacity: 0;
    }
  }

  /* Hover: la conexión del profesor se enciende y el pulso viaja
     centro → profesor; al soltar, regresa profesor → centro */
  .team-link.hot .track {
    stroke: rgba(255, 59, 66, 0.9);
  }

  .team-link.hot .endpoint {
    opacity: 1;
  }

  .team-link.hot .pulse {
    offset-distance: 100%;
    opacity: 1;
  }

  @supports not (offset-distance: 0%) {
    .team-lines .pulse {
      display: none;
    }
  }

  .team-node {
    position: absolute;
    transform: translate(-50%, -50%);
  }

  .team-node-center {
    left: 50%;
    top: 42%;
  }

  /* Onda expansiva que dispara la coordinadora al aparecer */
  .team-map::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 42%;
    width: 200px;
    height: 200px;
    margin: -100px 0 0 -100px;
    border-radius: 50%;
    border: 3px solid rgba(227, 36, 43, 0.75);
    opacity: 0;
    pointer-events: none;
  }

  .team-map.play::after {
    animation: teamBurst 1.1s ease-out 0.6s;
  }

  @keyframes teamBurst {
    0% {
      opacity: 0.9;
      transform: scale(0.35);
    }
    100% {
      opacity: 0;
      transform: scale(3.4);
    }
  }
}

/* ── Galería ───────────────────────────────────────────────── */
.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radio);
  border: 1px solid var(--borde);
}

.gallery-link {
  display: block;
  cursor: zoom-in;
}

.gallery-item img {
  width: 100%;
  filter: grayscale(40%) contrast(1.08) brightness(0.8);
  transition: transform 0.6s cubic-bezier(0.2, 0.6, 0.25, 1), filter 0.6s ease;
}

.gallery-item figcaption {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  padding: 2rem 1rem 0.9rem;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: linear-gradient(to top, rgba(10, 10, 11, 0.9), transparent);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transicion), transform var(--transicion);
}

.gallery-item:hover img {
  transform: scale(1.06);
  filter: grayscale(0%) contrast(1.05) brightness(0.95);
}

.gallery-item:hover figcaption {
  opacity: 1;
  transform: translateY(0);
}

/* ── Testimonios ───────────────────────────────────────────── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.4rem;
}

.testimonial {
  background: var(--humo);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 1.8rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  position: relative;
  transition: border-color var(--transicion), transform var(--transicion);
}

.testimonial::before {
  content: "“";
  position: absolute;
  top: 0.2rem;
  right: 1.1rem;
  font-family: var(--f-display);
  font-size: 4.5rem;
  font-weight: 900;
  color: var(--rojo);
  opacity: 0.35;
  line-height: 1;
}

.testimonial:hover {
  border-color: var(--rojo-profundo);
  transform: translateY(-4px);
}

.testimonial p {
  color: var(--gris);
  font-size: 0.97rem;
  flex: 1;
}

.testimonial cite {
  display: block;
  font-style: normal;
  font-weight: 700;
  color: var(--blanco);
}

.testimonial footer span {
  font-family: var(--f-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gris-oscuro);
}

/* ── CTA final ─────────────────────────────────────────────── */
.cta-final {
  position: relative;
  padding: 7rem 0;
  text-align: center;
  overflow: hidden;
  background: var(--carbon);
  border-top: 1px solid var(--borde);
}

.cta-glow {
  position: absolute;
  left: 50%;
  bottom: -40%;
  width: 90%;
  height: 100%;
  transform: translateX(-50%);
  background: radial-gradient(
    ellipse at bottom,
    rgba(227, 36, 43, 0.28) 0%,
    transparent 60%
  );
  filter: blur(30px);
  pointer-events: none;
}

.cta-inner {
  position: relative;
}

.cta-title {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 7vw, 5.2rem);
  line-height: 0.98;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

.cta-sub {
  color: var(--gris);
  font-size: 1.1rem;
  max-width: 32rem;
  margin: 0 auto 2.4rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  background: var(--negro);
  border-top: 1px solid var(--borde);
  padding: 4.5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.9rem;
}

.logo-img-footer {
  width: 84px;
  height: 84px;
}

.footer-logo {
  font-size: 1.7rem;
}

.footer-tagline {
  color: var(--gris);
  font-size: 0.92rem;
  max-width: 26rem;
  margin-bottom: 1.4rem;
}

.footer-social {
  display: flex;
  gap: 0.7rem;
}

.footer-social a {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  color: var(--gris);
  transition: color var(--transicion), border-color var(--transicion),
    transform var(--transicion);
}

.footer-social a:hover {
  color: var(--rojo-vivo);
  border-color: var(--rojo);
  transform: translateY(-3px);
}

.footer-col h3 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: var(--blanco);
}

.footer-col ul {
  display: grid;
  gap: 0.55rem;
}

.footer-col a,
.footer-contact li {
  color: var(--gris);
  font-size: 0.92rem;
  transition: color var(--transicion);
}

.footer-col a:hover {
  color: var(--rojo-vivo);
}

.footer-bottom {
  border-top: 1px solid var(--borde);
  padding-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  color: var(--gris-oscuro);
  font-size: 0.82rem;
}

.footer-legal {
  display: flex;
  gap: 1.4rem;
}

.footer-legal a {
  color: var(--gris-oscuro);
  transition: color var(--transicion);
}

.footer-legal a:hover {
  color: var(--blanco);
}

/* ── WhatsApp: botón flotante con popup de agentes ─────────── */
.whatsapp {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 12px;
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}

.whatsapp .label {
  background: #fff;
  color: #444;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 14px;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.18);
  white-space: nowrap;
}

/* Nota: se resetean padding/border porque la clase global .btn del sitio
   también aplica a este span y aplastaba el ícono */
.whatsapp .btn {
  position: relative;
  width: 60px;
  height: 60px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--whatsapp);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 5px 16px rgba(37, 211, 102, 0.55);
  transition: transform 0.55s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.whatsapp .btn svg {
  flex-shrink: 0;
}

/* Onda de pulso */
.whatsapp .btn::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  animation: waPulse 2.2s infinite;
}

@keyframes waPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(45, 183, 66, 0.55);
  }
  70% {
    box-shadow: 0 0 0 20px rgba(45, 183, 66, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(45, 183, 66, 0);
  }
}

/* Balanceo periódico del ícono */
.whatsapp .btn .icon-wa {
  animation: waSwing 3.2s ease-in-out infinite;
}

@keyframes waSwing {
  0%,
  82%,
  100% {
    transform: rotate(0);
  }
  86% {
    transform: rotate(16deg);
  }
  90% {
    transform: rotate(-13deg);
  }
  94% {
    transform: rotate(9deg);
  }
  98% {
    transform: rotate(-4deg);
  }
}

.whatsapp .btn .icon-x {
  display: none;
}

.whatsapp:not(.is-open):hover .btn {
  transform: scale(1.1);
}

.whatsapp.is-open .btn {
  transform: rotate(360deg);
}

.whatsapp.is-open .icon-wa {
  display: none;
}

.whatsapp.is-open .icon-x {
  display: block;
}

/* Popup desplegable */
.wa-popup {
  position: fixed;
  right: 26px;
  bottom: 100px;
  z-index: 1999;
  width: 360px;
  max-width: calc(100vw - 36px);
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.32);
  opacity: 0;
  visibility: hidden;
  transform: translateY(45px) scale(0.85);
  transform-origin: bottom right;
  transition: opacity 0.3s ease, transform 0.5s cubic-bezier(0.18, 0.89, 0.32, 1.28),
    visibility 0.3s;
}

.wa-popup.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.wa-head {
  background: linear-gradient(135deg, #34c45b, #22a046);
  color: #fff;
  padding: 22px 22px 24px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.wa-head .wa-h-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.wa-head strong {
  display: block;
  font-size: 18px;
  margin-bottom: 6px;
  font-weight: 600;
}

.wa-head p {
  font-size: 13.5px;
  line-height: 1.5;
  opacity: 0.95;
  margin: 0;
}

.wa-body {
  padding: 16px;
}

.wa-note {
  font-size: 13px;
  color: #8a909a;
  text-align: center;
  margin: 6px 0 14px;
}

.wa-agent {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #f5f6f8;
  border-left: 4px solid #25c15a;
  border-radius: 6px;
  padding: 12px 14px;
  margin-bottom: 12px;
  opacity: 0;
  transform: translateY(16px);
  transition: background 0.2s, opacity 0.4s ease, transform 0.4s ease;
}

.wa-popup.open .wa-agent {
  opacity: 1;
  transform: translateY(0);
}

.wa-popup.open .wa-agent:nth-of-type(1) {
  transition-delay: 0.18s, 0.18s;
}

.wa-popup.open .wa-agent:nth-of-type(2) {
  transition-delay: 0.32s, 0.32s;
}

.wa-agent:hover {
  background: #eef0f3;
  transform: translateX(3px);
}

.wa-agent:last-child {
  margin-bottom: 0;
}

.wa-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, #34c45b, #1d8c3d);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
}

.wa-agent-info {
  flex: 1;
  line-height: 1.3;
}

.wa-agent-info strong {
  display: block;
  color: #2a2f37;
  font-size: 15px;
}

.wa-agent-info span {
  color: #8a909a;
  font-size: 13px;
}

.wa-agent-icon {
  color: #25c15a;
  flex-shrink: 0;
}

@media (max-width: 560px) {
  .whatsapp .label {
    display: none;
  }
}

/* ── Animaciones de aparición (scroll) ─────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.6, 0.25, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Escalonado dentro de cuadrículas */
.courses-grid .reveal.visible:nth-child(2),
.teachers-grid .reveal.visible:nth-child(2),
.testimonials-grid .reveal.visible:nth-child(2) { transition-delay: 0.08s; }

.courses-grid .reveal.visible:nth-child(3),
.teachers-grid .reveal.visible:nth-child(3),
.testimonials-grid .reveal.visible:nth-child(3) { transition-delay: 0.16s; }

.courses-grid .reveal.visible:nth-child(4),
.teachers-grid .reveal.visible:nth-child(4),
.testimonials-grid .reveal.visible:nth-child(4) { transition-delay: 0.24s; }

.courses-grid .reveal.visible:nth-child(5),
.teachers-grid .reveal.visible:nth-child(5) { transition-delay: 0.32s; }

.courses-grid .reveal.visible:nth-child(6) { transition-delay: 0.4s; }

/* ── Navegación móvil y responsive ─────────────────────────── */
@media (max-width: 900px) {
  .nav {
    position: fixed;
    top: 88px;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--carbon);
    border-left: 1px solid var(--borde);
    padding: 2rem 1.6rem;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.25, 0.6, 0.3, 1);
    visibility: hidden;
  }

  .nav.open {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    width: 100%;
    margin-bottom: 1.6rem;
  }

  .nav-list li {
    width: 100%;
    border-bottom: 1px solid var(--borde);
  }

  .nav-link {
    display: block;
    padding: 0.95rem 0;
    font-size: 1.05rem;
  }

  .nav-link::after {
    display: none;
  }

  .btn-nav {
    width: 100%;
    text-align: center;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero-eq {
    right: 50%;
    transform: translateX(50%);
    opacity: 0.3;
    height: 60px;
  }

  .hero-scroll {
    display: none;
  }
}

@media (min-width: 720px) {
  .gallery {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .exp-layout {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 4rem;
  }

  .footer-grid {
    grid-template-columns: 1.6fr 0.8fr 0.8fr 1.2fr;
  }
}

/* ── Lightbox de la galería ────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3.5rem 4.5rem;
  background: rgba(5, 5, 6, 0.94);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.lightbox[hidden] {
  display: none;
}

.lightbox-img {
  max-width: min(90vw, 960px);
  max-height: 76vh;
  width: auto;
  height: auto;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.65);
  animation: lbIn 0.25s ease;
}

@keyframes lbIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.lightbox-caption {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gris);
  margin-top: 1.1rem;
  text-align: center;
}

.lightbox-btn {
  position: absolute;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(10, 10, 11, 0.7);
  border: 1px solid var(--borde);
  color: var(--blanco);
  cursor: pointer;
  transition: border-color var(--transicion), color var(--transicion),
    transform var(--transicion);
}

.lightbox-btn:hover {
  border-color: var(--rojo);
  color: var(--rojo-vivo);
  transform: scale(1.06);
}

.lightbox-close {
  top: 1.2rem;
  right: 1.4rem;
}

.lightbox-prev {
  left: 1.2rem;
  top: 50%;
  margin-top: -23px;
}

.lightbox-next {
  right: 1.2rem;
  top: 50%;
  margin-top: -23px;
}

@media (max-width: 640px) {
  .lightbox {
    padding: 3rem 0.8rem;
  }

  .lightbox-prev {
    left: 0.5rem;
  }

  .lightbox-next {
    right: 0.5rem;
  }
}

/* ── Páginas legales ───────────────────────────────────────── */
.legal {
  padding: 9.5rem 0 5rem;
}

.legal .container {
  max-width: 46rem;
}

.legal h1 {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0.8rem 0 0.5rem;
}

.legal-updated {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gris-oscuro);
  margin-bottom: 2.4rem;
}

.legal h2 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.4rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--blanco);
  border-left: 3px solid var(--rojo);
  padding-left: 0.75rem;
  margin: 2.4rem 0 0.8rem;
}

.legal p,
.legal li {
  color: var(--gris);
  font-size: 0.98rem;
  margin-bottom: 0.9rem;
}

.legal ul {
  margin-bottom: 1rem;
}

.legal ul li {
  position: relative;
  padding-left: 1.3rem;
  margin-bottom: 0.5rem;
}

.legal ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 7px;
  height: 7px;
  background: var(--rojo);
  transform: rotate(45deg);
}

.legal a {
  color: var(--rojo-vivo);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal strong {
  color: var(--blanco);
  font-weight: 600;
}

.legal-footer {
  padding: 1.8rem 0 2.2rem;
}

.legal-footer .footer-bottom {
  border-top: 0;
  padding-top: 0;
}

/* Formulario del Libro de Reclamaciones */
.libro-form {
  display: grid;
  gap: 1.3rem;
  margin-top: 2.2rem;
  background: var(--humo);
  border: 1px solid var(--borde);
  border-top: 3px solid var(--rojo);
  border-radius: var(--radio);
  padding: 1.7rem 1.6rem;
}

.libro-form fieldset {
  border: 1px dashed var(--borde);
  border-radius: var(--radio);
  padding: 1rem 1.2rem 1.2rem;
  display: grid;
  gap: 0.9rem;
}

.libro-form legend {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rojo-vivo);
  padding: 0 0.5rem;
}

.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.6rem;
}

.radio-row label {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: var(--gris);
  font-size: 0.93rem;
  cursor: pointer;
}

.radio-row input {
  accent-color: var(--rojo);
}

.radio-row strong {
  color: var(--blanco);
  font-weight: 600;
}

.libro-note {
  font-size: 0.8rem;
  color: var(--gris-oscuro);
  margin-bottom: 0;
}

/* Botón Libro de Reclamaciones en el footer */
.libro-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--gris-oscuro);
  border-radius: 999px;
  padding: 0.45rem 1.1rem;
  color: var(--blanco);
  font-weight: 600;
  transition: border-color var(--transicion), color var(--transicion);
}

.libro-btn:hover {
  border-color: var(--rojo);
  color: var(--rojo-vivo);
}

.footer-contact .libro-btn {
  margin-top: 0.45rem;
}

/* ── Movimiento reducido ───────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .marquee-track {
    animation: none;
  }
}