/* =========================================================
   BIIO Training Room — Subpáginas /inscripciones y /profesores
   Hereda variables y base de styles.css
   ========================================================= */

.page-insc { --insc-radius: 16px; }

.eyebrow--center { justify-content: center; }

/* ---------------------------------------------------------
   HERO
   --------------------------------------------------------- */
.ins-hero {
  position: relative;
  padding: 150px 0 90px;
  overflow: hidden;
  background: var(--bg);
}
.ins-hero__photo {
  position: absolute; inset: 0;
  background-size: cover; background-position: center 45%;
  opacity: 0.5;
  transform: scale(1.08);
  animation: insHeroZoom 24s ease-out forwards;
}
@keyframes insHeroZoom { to { transform: scale(1); } }
.ins-hero__scrim {
  position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(6,7,8,0.92) 0%, rgba(6,7,8,0.55) 30%, rgba(6,7,8,0.75) 70%, var(--bg) 100%),
    radial-gradient(90% 70% at 20% 45%, rgba(6,7,8,0.85) 0%, transparent 70%);
}
.ins-hero__inner {
  position: relative; z-index: 3;
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: 46px; align-items: center;
}
.ins-hero__title {
  font-family: "Anton", "Archivo", sans-serif;
  font-weight: 400; text-transform: uppercase;
  line-height: 0.92; letter-spacing: 0.01em;
  font-size: clamp(3rem, 7.2vw, 5.6rem);
  margin: 18px 0 22px;
  text-shadow: 0 2px 40px rgba(6,7,8,0.9);
}
.ins-hero__lead {
  color: var(--grey); font-size: 1.08rem; max-width: 520px;
}
.ins-hero__lead strong { color: var(--white); }

.ins-hero__points {
  list-style: none; margin: 26px 0 30px;
  display: flex; flex-direction: column; gap: 11px;
}
.ins-hero__points li {
  display: flex; align-items: center; gap: 11px;
  font-size: 0.96rem; color: var(--white);
}
.tick {
  flex: none;
  width: 20px; height: 20px; border-radius: 50%;
  border: 1px solid var(--blue-soft);
  background: var(--blue-faint);
  position: relative;
  box-shadow: 0 0 12px -2px var(--blue-glow);
}
.tick::after {
  content: ""; position: absolute;
  left: 6px; top: 4px; width: 5px; height: 9px;
  border: solid var(--blue-soft);
  border-width: 0 1.6px 1.6px 0;
  transform: rotate(45deg);
}
.ins-hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }

/* Collage de prueba */
.ins-hero__proof {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 14px;
  min-height: 420px;
}
.proof {
  position: relative; overflow: hidden;
  border-radius: var(--insc-radius);
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  box-shadow: 0 22px 60px -22px rgba(0,0,0,0.9);
  transition: transform 0.5s var(--ease-2), box-shadow 0.5s var(--ease);
}
.proof img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.7s var(--ease-2);
}
.proof figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 24px 12px 10px;
  font-family: "Space Mono", monospace;
  font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--white);
  background: linear-gradient(180deg, transparent, rgba(6,7,8,0.92));
}
.proof:hover { transform: translateY(-5px); box-shadow: 0 28px 70px -20px rgba(0,0,0,1), 0 0 30px -10px var(--blue-glow); }
.proof:hover img { transform: scale(1.06); }
.proof--a { grid-row: span 2; }
.proof--b, .proof--c { min-height: 190px; }

/* ---------------------------------------------------------
   FASE DE APERTURA — bloque de transparencia
   --------------------------------------------------------- */
.fase { padding: clamp(50px, 7vw, 78px) 0; background: var(--bg); }
.fase__card {
  position: relative;
  border: 1px solid var(--blue-soft);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(47,107,255,0.09), rgba(47,107,255,0.02)),
    var(--bg-2);
  padding: clamp(24px, 3.6vw, 42px);
  box-shadow: 0 30px 80px -34px rgba(0,0,0,0.95), inset 0 0 60px -30px var(--blue-glow);
  overflow: hidden;
}
.fase__card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue-soft), transparent);
}
.fase__tag {
  display: inline-block;
  font-family: "Space Mono", monospace;
  font-size: 0.64rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--blue-soft);
  border: 1px solid var(--blue-soft);
  background: var(--blue-faint);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 16px;
}
.fase__title {
  font-family: "Archivo", sans-serif; font-weight: 800;
  font-size: clamp(1.4rem, 3.2vw, 2.15rem);
  line-height: 1.2; margin-bottom: 30px;
  color: var(--white);
}
.fase__title .hl {
  color: var(--blue-soft);
  text-shadow: 0 0 26px var(--blue-glow);
  white-space: normal; /* .hl global fija nowrap; aquí la frase es larga */
}
.fase__cols {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  margin-bottom: 26px;
}
.fase__col {
  border: 1px solid var(--line-2);
  border-radius: var(--insc-radius);
  background: rgba(6,7,8,0.55);
  padding: 20px;
}
.fase__col--now { border-color: var(--blue-soft); background: rgba(47,107,255,0.07); }
.fase__step {
  display: block;
  font-family: "Space Mono", monospace;
  font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--grey-2);
  margin-bottom: 10px;
}
.fase__step--now { color: var(--blue-soft); }
.fase__col p { color: var(--grey); font-size: 0.92rem; line-height: 1.6; }
.fase__col strong { color: var(--white); }
.fase__foot {
  color: var(--grey); font-size: 0.92rem;
  border-top: 1px solid var(--line); padding-top: 20px;
}
.fase__foot a { color: var(--blue-soft); text-decoration: underline; text-underline-offset: 3px; }
.fase__foot a:hover { color: var(--white); }

.eyebrow--flag {
  border: 1px solid var(--blue-soft);
  background: var(--blue-faint);
  border-radius: 999px;
  padding: 7px 15px;
  color: var(--blue-soft);
}

/* ---------------------------------------------------------
   TRUSTBAR
   --------------------------------------------------------- */
.trustbar {
  border-block: 1px solid var(--line);
  background: var(--bg-1);
  padding: 34px 0;
}
.trustbar__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.trustbar__item {
  display: flex; flex-direction: column; gap: 6px;
  padding-left: 16px; border-left: 1px solid var(--line-2);
}
.trustbar__num {
  font-family: "Anton", sans-serif; font-weight: 400;
  text-transform: uppercase; line-height: 1;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  color: var(--white);
}
.trustbar__label {
  font-family: "Space Mono", monospace;
  font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--grey);
}

/* ---------------------------------------------------------
   FORMULARIO
   --------------------------------------------------------- */
.reserva { background: var(--bg); }
.reserva__grid {
  display: grid; grid-template-columns: 1.35fr 0.65fr; gap: 30px;
  align-items: start;
}

.form {
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line-2);
  border-radius: 20px;
  padding: clamp(22px, 3.4vw, 38px);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.95);
  position: relative;
  overflow: hidden;
}
.form::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue-soft), transparent);
  opacity: 0.6;
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
/* Separación vertical entre bloques del form. Solo hijos directos: dentro de
   .form__row la separación la da el gap, no el margen. */
.form > * + * { margin-top: 18px; }

.field { display: flex; flex-direction: column; gap: 7px; border: 0; }
/* El display de arriba le gana al [hidden] del navegador: hay que anularlo
   a mano para que el campo de "Otro" siga oculto. */
.field[hidden] { display: none; }
.field--full { width: 100%; }
.field label, .field legend {
  font-family: "Archivo", sans-serif; font-weight: 700;
  font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--white);
  padding: 0;
}
.field legend { margin-bottom: 11px; }
.req { color: var(--blue-soft); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 14px;
  background: var(--bg-3);
  border: 1px solid var(--line-2);
  border-radius: 11px;
  color: var(--white);
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.96rem;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}
.field textarea { resize: vertical; min-height: 88px; }
.field input::placeholder, .field textarea::placeholder { color: var(--grey-2); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--blue-soft);
  background: var(--bg-2);
  box-shadow: 0 0 0 3px var(--blue-faint), 0 0 24px -8px var(--blue-glow);
}
.field select { appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8' fill='none' stroke='%239aa0ac' stroke-width='1.6'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; background-size: 12px;
  padding-right: 38px;
}
.field select option { background: var(--bg-3); color: var(--white); }
/* Iconos nativos de date/time legibles en fondo oscuro */
.field input[type="date"]::-webkit-calendar-picker-indicator,
.field input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(1); opacity: 0.55; cursor: pointer;
}

.field__hint {
  font-family: "Space Mono", monospace;
  font-size: 0.66rem; letter-spacing: 0.06em; color: var(--grey-2);
}
.field__error {
  font-size: 0.74rem; color: #ff6b6b; min-height: 0;
  opacity: 0; transform: translateY(-3px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}
.field__error.show { opacity: 1; transform: none; }
.field.invalid input,
.field.invalid select { border-color: rgba(255, 107, 107, 0.7); }
/* El grupo de días no tiene input visible: se marcan los círculos */
.field.invalid .day__box { border-color: rgba(255, 107, 107, 0.7); }

/* Aviso de campos faltantes */
.form__alert {
  display: none;
  margin-top: 20px;
  padding: 13px 16px;
  border: 1px solid rgba(255, 107, 107, 0.5);
  background: rgba(255, 107, 107, 0.09);
  border-radius: 11px;
  color: #ff9b9b;
  font-size: 0.88rem;
  text-align: center;
}
.form__alert.show { display: block; animation: alertIn 0.3s var(--ease-2); }
@keyframes alertIn {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: none; }
}
.form__submit.shake { animation: shake 0.4s var(--ease); }
@keyframes shake {
  10%, 90% { transform: translateX(-2px); }
  20%, 80% { transform: translateX(3px); }
  30%, 50%, 70% { transform: translateX(-6px); }
  40%, 60% { transform: translateX(6px); }
}

/* Multiselección en pastillas — deportes y objetivos.
   Mismo lenguaje visual que los días, pero con texto y en varias filas. */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}
.chip-op { position: relative; cursor: pointer; display: block; }
.chip-op input { position: absolute; opacity: 0; width: 0; height: 0; }
.chip-op span {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 15px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: var(--bg-3);
  color: var(--grey);
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.88rem;
  line-height: 1;
  user-select: none;
  transition: all 0.25s var(--ease);
}
/* El punto de la izquierda es lo que marca "seleccionado" sin depender del color */
.chip-op span::before {
  content: "";
  width: 7px; height: 7px; border-radius: 50%;
  border: 1px solid currentColor;
  background: transparent;
  transition: all 0.25s var(--ease);
}
.chip-op:hover span { border-color: var(--blue-soft); color: var(--white); }
.chip-op input:checked + span {
  background: var(--blue);
  border-color: var(--blue-soft);
  color: #fff;
  box-shadow: 0 0 0 3px var(--blue-faint), 0 0 22px -8px var(--blue-glow);
}
.chip-op input:checked + span::before { background: #fff; border-color: #fff; }
.chip-op input:focus-visible + span {
  outline: 2px solid var(--blue-soft);
  outline-offset: 2px;
}
/* Igual que en los días: el grupo no tiene input visible que marcar */
.field.invalid .chip-op span { border-color: rgba(255, 107, 107, 0.55); }

/* Selector de días — círculos tipo calendario */
.days {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  max-width: 420px;
}
.day { position: relative; cursor: pointer; display: block; }
.day input { position: absolute; opacity: 0; width: 0; height: 0; }
.day__box {
  display: grid; place-items: center;
  aspect-ratio: 1;
  width: 100%; max-width: 56px;
  margin-inline: auto;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: var(--bg-3);
  color: var(--grey);
  transition: all 0.25s var(--ease);
  user-select: none;
}
.day__abbr {
  font-family: "Archivo", sans-serif; font-weight: 700;
  font-size: 0.86rem; letter-spacing: 0.02em;
  text-transform: lowercase;
}
.day:hover .day__box { border-color: var(--blue-soft); color: var(--white); }
.day input:checked + .day__box {
  background: var(--blue);
  border-color: var(--blue-soft);
  color: #fff;
  box-shadow: 0 0 0 3px var(--blue-faint), 0 0 22px -4px var(--blue-glow);
  transform: scale(1.06);
}
.day input:focus-visible + .day__box {
  outline: 2px solid var(--blue-soft); outline-offset: 3px;
}

.form__submit { width: 100%; margin-top: 26px; }
.form__legal {
  margin-top: 14px; text-align: center;
  font-size: 0.78rem; color: var(--grey-2);
}

/* Aside */
.reserva__aside { display: flex; flex-direction: column; gap: 16px; }
.aside__photo {
  border-radius: var(--insc-radius); overflow: hidden;
  border: 1px solid var(--line-2);
  box-shadow: 0 22px 60px -24px rgba(0,0,0,0.9);
}
.aside__photo img { width: 100%; height: 240px; object-fit: cover; }
.aside__card {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--insc-radius);
  padding: 24px;
}
.aside__card--soft { background: var(--bg-1); }
.aside__card h3 {
  font-family: "Archivo", sans-serif; font-weight: 800;
  font-size: 0.86rem; letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 16px; color: var(--white);
}
.aside__steps { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.aside__steps li {
  display: flex; gap: 12px; align-items: flex-start;
  color: var(--grey); font-size: 0.9rem; line-height: 1.5;
}
.aside__steps span {
  flex: none;
  width: 24px; height: 24px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--blue-faint); border: 1px solid var(--blue-soft);
  color: var(--blue-soft);
  font-family: "Space Mono", monospace; font-size: 0.7rem; font-weight: 700;
}
.aside__list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.aside__list li {
  position: relative; padding-left: 18px;
  color: var(--grey); font-size: 0.88rem;
}
.aside__list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--blue); box-shadow: 0 0 8px 1px var(--blue-glow);
}

/* ---------------------------------------------------------
   MOSAICO
   --------------------------------------------------------- */
.espacio { background: var(--bg-1); border-block: 1px solid var(--line); }
/* 11 fotos = 16 celdas (1 big 2x2 + 2 wide 2x1 + 8 de 1x1) = 4 filas exactas,
   sin huecos. Las filas tienen alto fijo para que el big encaje en dos. */
.mosaic {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: clamp(140px, 14vw, 200px);
  grid-auto-flow: dense; /* rellena cualquier hueco al cambiar de columnas */
  gap: 14px;
}
.mosaic__item {
  position: relative; overflow: hidden;
  border-radius: var(--insc-radius);
  border: 1px solid var(--line);
  background: var(--bg-2);
  cursor: zoom-in;
  transition: transform 0.5s var(--ease-2), box-shadow 0.5s var(--ease), border-color 0.4s var(--ease);
}
.mosaic__item--big { grid-column: span 2; grid-row: span 2; }
.mosaic__item--wide { grid-column: span 2; }
.mosaic__item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.8s var(--ease-2), filter 0.5s var(--ease);
  filter: saturate(1.05);
}
.mosaic__item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 30px 14px 12px;
  font-family: "Space Mono", monospace;
  font-size: 0.64rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--white);
  background: linear-gradient(180deg, transparent, rgba(6,7,8,0.94));
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease-2);
}
.mosaic__item:hover {
  transform: translateY(-4px);
  border-color: var(--blue-soft);
  box-shadow: 0 26px 60px -22px rgba(0,0,0,1), 0 0 34px -12px var(--blue-glow);
}
.mosaic__item:hover img { transform: scale(1.07); }
.mosaic__item:hover figcaption { opacity: 1; transform: none; }

/* ---------------------------------------------------------
   NIVELES
   --------------------------------------------------------- */
.niveles__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.nivel {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--insc-radius);
  overflow: hidden;
  will-change: transform;
  transition: border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.nivel img { width: 100%; height: 220px; object-fit: cover; }
.nivel figcaption { padding: 22px; }
.nivel h3 {
  font-family: "Archivo", sans-serif; font-weight: 800;
  font-size: 1.02rem; margin-bottom: 8px; color: var(--white);
}
.nivel p { color: var(--grey); font-size: 0.9rem; }
.nivel:hover { border-color: var(--blue-soft); box-shadow: 0 0 34px -12px var(--blue-glow); }

/* ---------------------------------------------------------
   COMODIDADES
   --------------------------------------------------------- */
.comodidades { background: var(--bg-1); border-block: 1px solid var(--line); }
.como__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.como {
  border: 1px solid var(--line-2);
  border-radius: var(--insc-radius);
  overflow: hidden;
  background: var(--bg-2);
  transition: transform 0.45s var(--ease-2), border-color 0.4s var(--ease);
}
.como img { width: 100%; height: 180px; object-fit: cover; }
.como figcaption { padding: 18px; }
.como h3 {
  font-family: "Archivo", sans-serif; font-weight: 800;
  font-size: 0.88rem; letter-spacing: 0.04em;
  margin-bottom: 6px; color: var(--white);
}
.como p { color: var(--grey); font-size: 0.84rem; }
.como:hover { transform: translateY(-4px); border-color: var(--blue-soft); }

/* ---------------------------------------------------------
   UBICACIÓN
   --------------------------------------------------------- */
.ubi__grid {
  display: grid; grid-template-columns: 1.25fr 1fr; gap: 26px;
  align-items: stretch; margin-bottom: 26px;
}
.ubi__map {
  border-radius: var(--insc-radius); overflow: hidden;
  border: 1px solid var(--line-2); min-height: 380px;
  background: var(--bg-2);
}
.ubi__map iframe {
  width: 100%; height: 100%; min-height: 380px; border: 0;
  filter: invert(90%) hue-rotate(180deg) saturate(0.7) contrast(0.9);
}
.ubi__info { display: flex; flex-direction: column; gap: 20px; }
.ubi__item h4 {
  font-family: "Archivo", sans-serif; font-weight: 800; font-size: 0.78rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--white);
  margin-bottom: 8px;
}
.ubi__item p { color: var(--grey); font-size: 0.98rem; }
.ubi__item strong { color: var(--white); }
.ubi__item--ref {
  border: 1px solid var(--blue-soft);
  background: var(--blue-faint);
  border-radius: var(--insc-radius);
  padding: 18px;
  box-shadow: inset 0 0 30px -12px var(--blue-glow);
}

.ubi__cta {
  display: flex; flex-direction: column; align-items: flex-start; gap: 14px;
  border: 1px solid var(--blue-soft);
  background: var(--blue-faint);
  border-radius: var(--insc-radius);
  padding: 28px;
  margin-bottom: 26px;
  box-shadow: inset 0 0 30px -12px var(--blue-glow);
}
.ubi__cta-eyebrow {
  font-family: "Space Mono", monospace; font-size: 0.8rem;
  letter-spacing: 0.08em; color: var(--blue-soft);
}
.ubi__cta-title {
  font-family: "Anton", sans-serif; text-transform: uppercase;
  font-size: clamp(1.3rem, 3vw, 1.8rem); color: var(--white); line-height: 1.1;
}

.ubi__steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ubi__step {
  position: relative; overflow: hidden;
  border-radius: var(--insc-radius);
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  cursor: zoom-in;
  transition: transform 0.45s var(--ease-2), border-color 0.4s var(--ease);
}
.ubi__step img { width: 100%; height: 230px; object-fit: cover; }
.ubi__step figcaption {
  display: flex; align-items: center; gap: 11px;
  padding: 16px 18px;
  font-family: "Archivo", sans-serif; font-weight: 700;
  font-size: 0.86rem; color: var(--white);
}
.ubi__n {
  flex: none;
  width: 26px; height: 26px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--white); color: #0a0a0a;
  font-family: "Space Mono", monospace; font-size: 0.72rem; font-weight: 700;
}
.ubi__step:hover { transform: translateY(-4px); border-color: var(--blue-soft); }

/* ---------------------------------------------------------
   DUDAS / WHATSAPP
   --------------------------------------------------------- */
.dudas {
  position: relative;
  padding: clamp(80px, 11vw, 130px) 0;
  text-align: center;
  background: var(--bg);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.dudas__inner { position: relative; z-index: 2; }
.dudas__title {
  font-family: "Anton", sans-serif; font-weight: 400; text-transform: uppercase;
  line-height: 0.98; letter-spacing: 0.01em;
  font-size: clamp(2rem, 5vw, 3.6rem);
  margin: 16px 0 16px;
}
.dudas__sub {
  color: var(--grey); font-size: 1.05rem;
  max-width: 560px; margin: 0 auto 32px;
}
.dudas__meta {
  margin-top: 18px;
  font-family: "Space Mono", monospace;
  font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--grey-2);
}
.btn--wa {
  background: var(--wa); color: #052e16;
  border-color: transparent;
}
.btn--wa:hover {
  box-shadow: 0 16px 44px -12px rgba(37, 211, 102, 0.55), 0 0 30px -6px rgba(37, 211, 102, 0.6);
}

/* ---------------------------------------------------------
   LIGHTBOX
   --------------------------------------------------------- */
.lightbox {
  position: fixed; inset: 0; z-index: 9998;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px; padding: 40px 20px;
  background: rgba(4, 5, 6, 0.94);
  backdrop-filter: blur(10px);
  opacity: 0; visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox__img {
  max-width: min(1000px, 92vw); max-height: 78vh;
  object-fit: contain;
  border-radius: var(--insc-radius);
  border: 1px solid var(--line-2);
  box-shadow: 0 40px 100px -30px rgba(0,0,0,1), 0 0 60px -20px var(--blue-glow);
  transform: scale(0.94);
  transition: transform 0.4s var(--ease-2);
}
.lightbox.open .lightbox__img { transform: scale(1); }
.lightbox__cap {
  font-family: "Space Mono", monospace;
  font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--grey);
  text-align: center;
}
.lightbox__close {
  position: absolute; top: 20px; right: 24px;
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--bg-2); border: 1px solid var(--line-2);
  color: var(--white); font-size: 1.7rem; line-height: 1;
  cursor: pointer;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.lightbox__close:hover { border-color: var(--blue-soft); background: var(--bg-3); }

/* ---------------------------------------------------------
   POR QUÉ TE CONVIENE — solo en /profesores
   --------------------------------------------------------- */
.porque { background: var(--bg); }
.porque__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.porque__card {
  position: relative;
  border: 1px solid var(--line-2);
  border-radius: var(--insc-radius);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  padding: 28px 24px 26px;
  transition: border-color 0.35s var(--ease), transform 0.45s var(--ease-2), box-shadow 0.45s var(--ease);
}
.porque__card:hover {
  border-color: var(--blue-soft);
  box-shadow: 0 26px 60px -30px rgba(0,0,0,0.95), inset 0 0 50px -34px var(--blue-glow);
}
.porque__n {
  display: block;
  font-family: "Space Mono", monospace;
  font-size: 0.7rem; letter-spacing: 0.16em;
  color: var(--blue-soft);
  margin-bottom: 14px;
}
.porque__card h3 {
  font-family: "Archivo", sans-serif; font-weight: 800;
  font-size: 1.06rem; line-height: 1.25;
  color: var(--white);
  margin-bottom: 10px;
}
.porque__card p {
  font-size: 0.92rem; line-height: 1.65; color: var(--grey);
}

/* .reveal se hereda de styles.css — no se redefine aquí. */

/* ---------------------------------------------------------
   RESPONSIVE
   --------------------------------------------------------- */
@media (max-width: 1040px) {
  .porque__grid { grid-template-columns: repeat(2, 1fr); }
  .ins-hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .ins-hero__proof { min-height: 340px; }
  .reserva__grid { grid-template-columns: 1fr; }
  .aside__photo img { height: 280px; }
  /* 3 columnas: big(4) + 1 wide(2) + 9 de 1x1 = 15 celdas = 5 filas exactas.
     El segundo wide se degrada a 1x1 para que la cuenta cuadre. */
  .mosaic { grid-template-columns: repeat(3, 1fr); }
  .mosaic__item--wide + .mosaic__item--wide { grid-column: span 1; }
  .como__grid { grid-template-columns: repeat(2, 1fr); }
  .ubi__grid { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .trustbar__grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .fase__cols { grid-template-columns: 1fr; }
  .porque__grid { grid-template-columns: 1fr; }
  .niveles__grid { grid-template-columns: 1fr; }
  .nivel img { height: 240px; }
  .ubi__steps { grid-template-columns: 1fr; }
  .ubi__step img { height: 260px; }
}
@media (max-width: 620px) {
  .ins-hero { padding: 120px 0 70px; }
  .form__row { grid-template-columns: 1fr; }
  .form__submit { --pad: 18px 18px; font-size: 0.9rem; }
  .days { gap: 6px; }
  .form__row + .form__row { margin-top: 18px; }
  /* 2 columnas: big y ambos wide ocupan el ancho completo (3 x 2 + 8 = 14 celdas = 7 filas).
     Se reafirma el segundo wide porque la regla de 3 columnas gana por especificidad. */
  .mosaic { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .mosaic__item--big { grid-column: span 2; grid-row: span 1; }
  .mosaic__item--wide,
  .mosaic__item--wide + .mosaic__item--wide { grid-column: span 2; }
  .mosaic__item figcaption { opacity: 1; transform: none; font-size: 0.58rem; }
  .ins-hero__proof { grid-template-columns: 1fr 1fr; min-height: 300px; }
  .proof--a { grid-row: span 1; grid-column: span 2; }
  .proof figcaption { opacity: 1; }
  .como__grid { grid-template-columns: 1fr; }
  .como img { height: 200px; }
  .ins-hero__cta .btn { flex: 1 1 100%; }
  .lightbox__close { top: 12px; right: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .ins-hero__photo { animation: none; transform: none; }
}