/* ============================================================
   Demo por planes — Órbita Idiomas
   Una misma identidad con distinto alcance según el plan.
   Todas las clases propias usan el prefijo i-.
   ============================================================ */

:root {
  --i-ink: #14213d;
  --i-text: #3e4962;
  --i-bg: #f7f4ed;
  --i-surface: #fffdf8;
  --i-line: #ddd8cc;
  --i-accent: #e66b2e;
  --i-accent-dark: #b94716;
  --i-pop: #f2c84b;
  --i-success: #18745a;
  --i-max: 1120px;
  --i-radius: 18px;
  --i-shadow: 0 18px 50px rgba(20, 33, 61, .12);
  --i-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --i-display: Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--i-text);
  background:
    radial-gradient(circle at 8% 4%, rgba(242, 200, 75, .11), transparent 24rem),
    var(--i-bg);
  font-family: var(--i-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: var(--i-accent-dark); }
button, input, select, textarea { font: inherit; }
h1, h2, h3 { color: var(--i-ink); line-height: 1.08; margin: 0 0 .55em; }
h1, h2 { font-family: var(--i-display); }
h1 { font-size: clamp(2.45rem, 1.75rem + 3.4vw, 5rem); letter-spacing: -.045em; }
h2 { font-size: clamp(1.85rem, 1.4rem + 2vw, 3rem); letter-spacing: -.025em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1rem; }

.i-container { width: min(100% - 2rem, var(--i-max)); margin-inline: auto; }
.i-section { padding-block: clamp(3.5rem, 8vw, 7rem); }
.i-section--surface { background: var(--i-surface); border-block: 1px solid rgba(20, 33, 61, .045); }
.i-section--dark { background: var(--i-ink); color: #dce2ef; }
.i-section--dark h2, .i-section--dark h3 { color: #fff; }
.i-center { text-align: center; }
.i-center .i-lead { margin-inline: auto; }
.i-lead { max-width: 60ch; font-size: clamp(1.05rem, .98rem + .3vw, 1.23rem); }
.i-kicker {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--i-accent-dark);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.i-note { color: #667087; font-size: .88rem; }
.i-demo-note {
  margin: 1.5rem 0 0;
  padding: .8rem 1rem;
  border: 1px solid #e4bd74;
  border-radius: 12px;
  background: #fff7df;
  color: #684818;
  font-size: .9rem;
}

/* Navegación */
.i-nav {
  position: sticky;
  top: 40px;
  z-index: 40;
  border-bottom: 1px solid color-mix(in srgb, var(--i-line) 82%, transparent);
  background: color-mix(in srgb, var(--i-bg) 92%, transparent);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 26px rgba(20, 33, 61, .035);
}
.i-nav__inner { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.i-brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--i-ink); font-weight: 850; text-decoration: none; }
.i-brand__mark {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 50% 50% 50% 12px;
  background: var(--i-accent); color: #fff; font-size: 1.12rem;
  box-shadow: inset 0 0 0 5px rgba(255,255,255,.2);
}
.i-brand small { display: block; color: #737c8e; font-size: .65rem; font-weight: 650; letter-spacing: .04em; }
.i-nav__links { display: flex; align-items: center; gap: .15rem; margin: 0; padding: 0; list-style: none; }
.i-nav__links a { display: block; padding: .55rem .72rem; border-radius: 9px; color: var(--i-text); font-size: .9rem; font-weight: 700; text-decoration: none; }
.i-nav__links a:hover, .i-nav__links a[aria-current="page"] { background: #ebe6da; color: var(--i-ink); }
.i-nav__links a[href="contacto.html"],
.i-nav__links a[href="matricula.html"],
.i-nav__links a[href="#contacto"] {
  margin-left: .25rem;
  padding-inline: 1rem;
  background: var(--i-ink);
  color: #fff;
}
.i-nav__links a[href="contacto.html"]:hover,
.i-nav__links a[href="matricula.html"]:hover,
.i-nav__links a[href="#contacto"]:hover,
.i-nav__links a[href="contacto.html"][aria-current="page"],
.i-nav__links a[href="matricula.html"][aria-current="page"] { background: var(--i-accent); color: #fff; }
.i-nav__toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--i-line); border-radius: 10px; background: var(--i-surface); cursor: pointer; }
.i-nav__toggle span, .i-nav__toggle span::before, .i-nav__toggle span::after { content: ""; position: relative; display: block; width: 19px; height: 2px; margin: auto; background: var(--i-ink); }
.i-nav__toggle span::before { position: absolute; top: -6px; }
.i-nav__toggle span::after { position: absolute; top: 6px; }

/* Botones */
.i-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.i-center .i-actions { justify-content: center; }
.i-btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 46px;
  padding: .72rem 1.2rem; border: 2px solid transparent; border-radius: 999px;
  font-weight: 800; text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
}
.i-btn:hover { transform: translateY(-2px); }
.i-btn--primary { background: var(--i-accent); color: #fff; box-shadow: 0 8px 22px rgba(185, 71, 22, .23); }
.i-btn--primary:hover { background: var(--i-accent-dark); }
.i-btn--outline { border-color: var(--i-ink); color: var(--i-ink); }
.i-btn--outline:hover { background: var(--i-ink); color: #fff; }
.i-btn--light { background: #fff; color: var(--i-ink); }
.i-btn--outline-light { border-color: rgba(255,255,255,.7); color: #fff; }
.i-btn--outline-light:hover { border-color: #fff; background: #fff; color: var(--i-ink); }

/* Héroes y recursos visuales */
.i-hero { position: relative; overflow: hidden; padding-block: clamp(4.5rem, 10vw, 8rem); isolation: isolate; }
.i-hero::before { content: ""; position: absolute; z-index: -1; width: 430px; height: 430px; right: -120px; top: -170px; border-radius: 50%; background: color-mix(in srgb, var(--i-pop) 38%, transparent); }
.i-hero::after { content: ""; position: absolute; z-index: -1; left: -8rem; bottom: -12rem; width: 25rem; height: 25rem; border: 1px solid rgba(230,107,46,.18); border-radius: 50%; box-shadow: 0 0 0 3rem rgba(230,107,46,.035), 0 0 0 7rem rgba(230,107,46,.025); }
.i-hero__grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); align-items: center; gap: clamp(2rem, 7vw, 6rem); }
.i-hero__copy p { max-width: 55ch; font-size: 1.15rem; }
.i-hero__copy h1 em { color: var(--i-accent); font-style: normal; position: relative; }
.i-hero__copy h1 em::after { content: ""; position: absolute; left: 0; right: 0; bottom: -.08em; height: .12em; border-radius: 999px; background: var(--i-pop); transform: rotate(-1deg); }
.i-visual {
  position: relative; min-height: 390px; overflow: hidden;
  border: 1px solid rgba(20,33,61,.12); border-radius: 34px 34px 90px 34px;
  background:
    radial-gradient(circle at 84% 15%, rgba(242,200,75,.23), transparent 27%),
    linear-gradient(145deg, #22355d, #14213d); box-shadow: var(--i-shadow);
}
.i-visual::before { content: "hello"; position: absolute; left: 9%; top: 10%; color: #fff; font: 700 clamp(3rem, 8vw, 6rem)/1 var(--i-display); opacity: .95; }
.i-visual::after { content: "hola · bonjour · ciao"; position: absolute; left: 9%; bottom: 9%; max-width: 9ch; color: #fff2cd; font-size: .72rem; font-weight: 800; line-height: 1.5; letter-spacing: .06em; }
.i-visual::before, .i-visual::after { z-index: 1; }
.i-visual__photo { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: brightness(.48) saturate(.78); }
.i-orbit { position: absolute; z-index: 2; width: 210px; height: 210px; right: -30px; top: 92px; border: 3px solid var(--i-pop); border-radius: 50%; }
.i-orbit::before { content: "A2"; position: absolute; width: 68px; height: 68px; left: -28px; top: 17px; display: grid; place-items: center; border-radius: 50%; background: var(--i-accent); color: #fff; font-weight: 900; }
.i-visual__card {
  position: absolute; z-index: 2; right: 7%; bottom: 8%; width: min(68%, 245px);
  padding: 1rem 1.1rem; border: 1px solid rgba(255,255,255,.65); border-radius: 16px;
  background: rgba(255,255,255,.94); color: var(--i-text); box-shadow: 0 18px 40px rgba(5,12,30,.24);
  backdrop-filter: blur(8px); transform: rotate(-2deg);
}
.i-visual__card small { display: block; color: var(--i-accent-dark); font-size: .68rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.i-visual__card strong { display: block; margin: .2rem 0; color: var(--i-ink); font-size: 1.35rem; }
.i-visual__card span { display: block; font-size: .78rem; line-height: 1.4; }
.i-visual__bubble {
  position: absolute; z-index: 3; right: 8%; top: 9%; padding: .48rem .75rem;
  border-radius: 999px 999px 4px 999px; background: var(--i-pop); color: var(--i-ink);
  box-shadow: 0 8px 25px rgba(5,12,30,.18); font-size: .75rem; font-weight: 900;
}

/* Franja de argumentos rápidos, inspirada en la navegación por objetivos */
.i-highlights { position: relative; z-index: 3; margin-top: -2rem; }
.i-highlights__grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden; border: 1px solid var(--i-line); border-radius: var(--i-radius);
  background: var(--i-surface); box-shadow: var(--i-shadow);
}
.i-highlight { min-height: 112px; padding: 1.25rem; border-left: 1px solid var(--i-line); }
.i-highlight:first-child { border-left: 0; }
.i-highlight span { display: block; margin-bottom: .35rem; color: var(--i-accent-dark); font-size: .7rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.i-highlight strong { display: block; color: var(--i-ink); line-height: 1.25; }
.i-highlight small { color: #687188; }

.i-page-hero { position: relative; overflow: hidden; padding-block: clamp(3rem, 7vw, 5.5rem); background: var(--i-surface); }
.i-page-hero::after { content: "Aa"; position: absolute; right: max(2rem, calc((100vw - var(--i-max)) / 2)); top: 50%; color: var(--i-accent); font: 700 clamp(5rem, 14vw, 10rem)/1 var(--i-display); opacity: .07; transform: translateY(-50%) rotate(-8deg); }
.i-page-hero .i-container { position: relative; z-index: 1; }
.i-page-hero h1 { max-width: 15ch; }
.i-page-hero .i-lead { max-width: 58ch; }

/* Rejillas y tarjetas */
.i-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.i-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.i-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.i-card { padding: 1.5rem; border: 1px solid var(--i-line); border-radius: var(--i-radius); background: var(--i-surface); transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.i-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--i-accent) 50%, var(--i-line)); box-shadow: 0 18px 42px rgba(20,33,61,.09); }
.i-card__media { height: 155px; margin: -1.5rem -1.5rem 1.25rem; overflow: hidden; background: #e3e6ed; }
.i-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.i-card:hover .i-card__media img { transform: scale(1.045); }
.i-card h2 { font-family: var(--i-sans); font-size: 1.25rem; letter-spacing: 0; }
.i-card__tag { display: inline-flex; margin-bottom: 1rem; padding: .25rem .6rem; border-radius: 999px; background: #f7dfb0; color: #67420d; font-size: .72rem; font-weight: 800; text-transform: uppercase; }
.i-card p:last-child { margin-bottom: 0; }
.i-card--accent { border-color: #dc9c7d; background: #fff4ee; }
.i-stat { padding: 1.2rem; border-left: 3px solid var(--i-accent); background: var(--i-surface); }
.i-stat strong { display: block; color: var(--i-ink); font-size: 1.25rem; }
.i-split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(2rem, 6vw, 5rem); }
.i-list { display: grid; gap: .7rem; margin: 1.2rem 0 0; padding: 0; list-style: none; }
.i-list li { position: relative; padding-left: 1.65rem; }
.i-list li::before { content: "✓"; position: absolute; left: 0; color: var(--i-success); font-weight: 900; }
.i-steps { counter-reset: steps; display: grid; gap: 1rem; }
.i-step { counter-increment: steps; display: grid; grid-template-columns: 48px 1fr; gap: 1rem; padding: 1.25rem; border: 1px solid var(--i-line); border-radius: 14px; background: var(--i-surface); }
.i-step::before { content: counter(steps); display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--i-ink); color: #fff; font-weight: 900; }
.i-step p { margin: 0; }
.i-gallery { display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-auto-rows: 165px; gap: .8rem; }
.i-gallery__item { display: grid; place-items: center; overflow: hidden; margin: 0; padding: 1rem; border-radius: var(--i-radius); color: #fff; text-align: center; font-weight: 850; background: linear-gradient(145deg, #27406f, #172542); }
.i-gallery__item:first-child { grid-row: span 2; background: linear-gradient(145deg, #db5e26, #f0a242); }
.i-gallery__item:nth-child(3) { background: linear-gradient(145deg, #1a7662, #43a58e); }
.i-gallery__item:nth-child(4) { background: linear-gradient(145deg, #7a4aa1, #b783d4); }
.i-gallery__photo { position: relative; padding: 0; align-items: end; overflow: hidden; }
.i-gallery__photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.i-gallery__photo::after { content: ""; position: absolute; inset: 42% 0 0; background: linear-gradient(transparent, rgba(9,16,31,.82)); }
.i-gallery__photo figcaption { position: relative; z-index: 1; width: 100%; padding: 1rem; text-align: left; text-shadow: 0 2px 12px rgba(0,0,0,.45); }
.i-gallery__photo:hover img { transform: scale(1.055); }
.i-photo-band { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: .8rem; margin-top: 2rem; }
.i-photo-band figure, .i-photo-panel { position: relative; min-height: 230px; margin: 0; overflow: hidden; border-radius: var(--i-radius); background: #e3e6ed; }
.i-photo-band figure:first-child { min-height: 320px; }
.i-photo-band img, .i-photo-panel img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.i-photo-band figcaption, .i-photo-panel figcaption { position: absolute; z-index: 1; inset: auto 0 0; padding: 2.5rem 1rem 1rem; background: linear-gradient(transparent, rgba(9,16,31,.82)); color: #fff; font-size: .85rem; font-weight: 800; }
.i-photo-panel { min-height: 330px; box-shadow: var(--i-shadow); }

/* Escala visual de niveles y preguntas frecuentes */
.i-levels { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .65rem; margin-top: 2rem; }
.i-level { position: relative; min-height: 120px; padding: 1rem; overflow: hidden; border-radius: 14px; background: var(--i-surface); border: 1px solid var(--i-line); }
.i-level::after { content: ""; position: absolute; inset: auto 0 0; height: 6px; background: var(--i-accent); opacity: var(--i-level-opacity, .3); }
.i-level:nth-child(2) { --i-level-opacity: .45; }
.i-level:nth-child(3) { --i-level-opacity: .6; }
.i-level:nth-child(4) { --i-level-opacity: .78; }
.i-level:nth-child(5) { --i-level-opacity: 1; }
.i-level strong { display: block; color: var(--i-ink); font-size: 1.35rem; }
.i-level span { display: block; color: #667087; font-size: .82rem; }
.i-faq { max-width: 800px; margin: 2rem auto 0; display: grid; gap: .65rem; }
.i-faq details { border: 1px solid var(--i-line); border-radius: 13px; background: var(--i-surface); }
.i-faq summary { position: relative; padding: 1rem 3rem 1rem 1.15rem; color: var(--i-ink); font-weight: 800; cursor: pointer; list-style: none; }
.i-faq summary::-webkit-details-marker { display: none; }
.i-faq summary::after { content: "+"; position: absolute; right: 1.15rem; top: 50%; color: var(--i-accent); font-size: 1.35rem; line-height: 1; transform: translateY(-50%); transition: transform .2s ease; }
.i-faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.i-faq details p { padding: 0 1.15rem 1rem; margin: 0; }
.i-faq details[open] { border-color: color-mix(in srgb, var(--i-accent) 45%, var(--i-line)); box-shadow: 0 10px 30px rgba(20,33,61,.06); }

/* Cursos y filtros */
.i-filter { display: flex; flex-wrap: wrap; gap: .55rem; margin: 1.5rem 0 2rem; }
.i-filter button { padding: .55rem .9rem; border: 1px solid var(--i-line); border-radius: 999px; background: var(--i-surface); color: var(--i-ink); font-weight: 750; cursor: pointer; }
.i-filter button.active, .i-filter button:hover { border-color: var(--i-ink); background: var(--i-ink); color: #fff; }
.i-filter__status { margin: -1.35rem 0 1.5rem; color: #667087; font-size: .85rem; font-weight: 700; }
.i-course { display: flex; flex-direction: column; overflow: hidden; }
.i-course[hidden] { display: none; }
.i-course__meta { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: auto; padding-top: 1rem; }
.i-course__meta span { padding: .22rem .5rem; border-radius: 6px; background: #eeebe3; color: #566078; font-size: .76rem; font-weight: 700; }

/* Formularios y extras Premium */
.i-contact { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(2rem, 6vw, 5rem); }
.i-form { padding: 1.4rem; border: 1px solid var(--i-line); border-radius: var(--i-radius); background: var(--i-surface); }
.i-form label, .i-fieldset legend { display: block; color: var(--i-ink); font-weight: 750; }
.i-form label { margin-bottom: 1rem; }
.i-form input, .i-form select, .i-form textarea { width: 100%; margin-top: .35rem; padding: .72rem .8rem; border: 1px solid #bfc3ca; border-radius: 9px; background: #fff; color: var(--i-ink); }
.i-form input:focus, .i-form select:focus, .i-form textarea:focus { border-color: var(--i-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--i-accent) 14%, transparent); outline: 0; }
.i-form textarea { resize: vertical; }
.i-fieldset { margin: 0 0 1rem; padding: 0; border: 0; }
.i-options { display: grid; gap: .55rem; margin-top: .6rem; }
.i-options label { display: flex; align-items: flex-start; gap: .55rem; margin: 0; padding: .65rem; border: 1px solid var(--i-line); border-radius: 9px; font-weight: 500; }
.i-options input { width: auto; margin: .25rem 0 0; }
.i-result { min-height: 3rem; margin-top: 1rem; padding: .8rem; border-radius: 10px; background: #e7f4ee; color: #125742; font-weight: 700; }
.i-map { min-height: 220px; margin-top: 1.5rem; display: grid; place-items: center; border-radius: var(--i-radius); background: repeating-linear-gradient(45deg, #dfe3e9 0 18px, #f1f3f6 18px 36px); color: var(--i-ink); font-weight: 850; text-align: center; }
.i-schedule { width: 100%; border-collapse: collapse; background: var(--i-surface); }
.i-table-wrap { overflow-x: auto; }
.i-schedule th, .i-schedule td { padding: .85rem; border-bottom: 1px solid var(--i-line); text-align: left; }
.i-schedule th { color: var(--i-ink); }
.i-resource { position: relative; overflow: hidden; padding-top: 6rem; }
.i-resource::before { content: "Aa"; position: absolute; inset: 0 0 auto; height: 4.8rem; display: grid; place-items: center; background: var(--i-ink); color: var(--i-pop); font: 700 2rem/1 var(--i-display); }
.i-resource--photo { padding-top: 1.5rem; }
.i-resource--photo::before { display: none; }
.i-resource__image { width: calc(100% + 3rem); height: 155px; margin: -1.5rem -1.5rem 1.25rem; object-fit: cover; }

/* Configurador de ruta Premium */
.i-wizard-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: 1.25rem; align-items: start; margin-top: 2.5rem; }
.i-wizard { padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--i-line); border-radius: 24px; background: var(--i-surface); box-shadow: 0 22px 65px rgba(20,33,61,.11); }
.i-wizard__progress { height: 7px; overflow: hidden; border-radius: 999px; background: #e6e8f1; }
.i-wizard__progress span { display: block; width: 25%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--i-accent), #9f8bf3); transition: width .35s cubic-bezier(.2,.75,.2,1); }
.i-wizard__status { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin: 1rem 0 1.5rem; }
.i-wizard__status span { color: var(--i-accent-dark); font-size: .75rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.i-wizard__status strong { color: var(--i-ink); }
.i-wizard__panel { min-width: 0; margin: 0; padding: 0; border: 0; }
.i-wizard__panel legend { width: 100%; margin-bottom: 1rem; color: var(--i-ink); font-family: var(--i-display); font-size: clamp(1.45rem, 1.2rem + .8vw, 2rem); font-weight: 700; line-height: 1.15; }
.i-choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.i-choice { position: relative; cursor: pointer; }
.i-choice input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.i-choice span { display: block; min-height: 116px; padding: 1rem; border: 1px solid var(--i-line); border-radius: 14px; background: #fafbfe; transition: border-color .18s ease, transform .18s ease, background .18s ease, box-shadow .18s ease; }
.i-choice strong { display: block; margin-bottom: .35rem; color: var(--i-ink); }
.i-choice small { display: block; color: #667087; line-height: 1.45; }
.i-choice:hover span { transform: translateY(-2px); border-color: color-mix(in srgb, var(--i-accent) 45%, var(--i-line)); }
.i-choice input:checked + span { border-color: var(--i-accent); background: color-mix(in srgb, var(--i-accent) 8%, #fff); box-shadow: inset 0 0 0 2px var(--i-accent), 0 10px 25px rgba(76,54,181,.1); }
.i-choice input:focus-visible + span { outline: 3px solid #2f5bea; outline-offset: 3px; }
.i-wizard__error { min-height: 1.55rem; margin: .75rem 0 0; color: #a52727; font-size: .88rem; font-weight: 750; }
.i-wizard__controls { display: none; align-items: center; justify-content: space-between; gap: .75rem; margin-top: .7rem; }
.i-wizard-ready .i-wizard__controls { display: flex; }
.i-wizard__controls [hidden] { display: none; }
.i-wizard-ready [data-wizard-submit] { margin-left: auto; }
.i-wizard-aside { position: sticky; top: 132px; padding: 1.5rem; border-radius: 24px; background: linear-gradient(155deg, #1a2440, #11182b); color: #dce2ef; box-shadow: 0 22px 60px rgba(11,18,38,.22); }
.i-wizard-aside__photo { height: 180px; margin: -1.5rem -1.5rem 1.5rem; overflow: hidden; border-radius: 24px 24px 0 0; }
.i-wizard-aside__photo img { width: 100%; height: 100%; object-fit: cover; }
.i-wizard-aside h3 { color: #fff; font-size: 1.4rem; }
.i-wizard-aside .i-list li::before { color: var(--i-pop); }
.i-route-result { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 2rem; margin-top: 1.5rem; padding: clamp(1.5rem, 4vw, 2.5rem); overflow: hidden; border-radius: 24px; background: radial-gradient(circle at 90% 0, rgba(185,242,106,.18), transparent 30%), linear-gradient(145deg, #7357e8, #26345d); color: #e9ecf5; box-shadow: 0 25px 70px rgba(38,52,93,.25); }
.i-route-result[hidden] { display: none; }
.i-route-result h2 { color: #fff; }
.i-route-result .i-kicker { color: var(--i-pop); }
.i-route-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.25rem; }
.i-route-tags span { padding: .35rem .65rem; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; background: rgba(255,255,255,.1); color: #fff; font-size: .8rem; font-weight: 750; }
.i-route-result__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .65rem; }
.i-route-result.is-updated { animation: i-route-in .55s cubic-bezier(.2,.8,.2,1); }

/* Campus Premium de demostración */
.i-campus { padding-block: clamp(2rem, 5vw, 4rem); }
.i-campus-shell { display: grid; grid-template-columns: 230px minmax(0, 1fr); min-height: 720px; overflow: hidden; border: 1px solid #d5d9e7; border-radius: 26px; background: #f7f8fc; box-shadow: 0 28px 80px rgba(20,33,61,.16); }
.i-campus-side { padding: 1.5rem; background: #10182c; color: #bec6d8; }
.i-campus-side .i-brand { color: #fff; }
.i-campus-side .i-brand small { color: #aeb7ca; }
.i-campus-nav { display: grid; gap: .35rem; margin: 2rem 0; padding: 0; list-style: none; }
.i-campus-nav a { display: flex; align-items: center; gap: .65rem; padding: .7rem .8rem; border-radius: 10px; color: #cbd2df; font-size: .9rem; font-weight: 750; text-decoration: none; }
.i-campus-nav a:hover, .i-campus-nav a[aria-current="page"] { background: rgba(255,255,255,.1); color: #fff; }
.i-campus-side__note { padding: 1rem; border: 1px solid rgba(255,255,255,.12); border-radius: 13px; font-size: .8rem; }
.i-campus-main { padding: clamp(1.25rem, 4vw, 2.5rem); min-width: 0; }
.i-campus-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 2rem; }
.i-campus-head h2 { max-width: none; font-size: clamp(2rem, 1.65rem + 1.7vw, 3.2rem); }
.i-campus-pill { padding: .45rem .75rem; border-radius: 999px; background: #e9e5ff; color: #4c36b5; font-size: .75rem; font-weight: 850; white-space: nowrap; }
.i-dashboard-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 1rem; }
.i-dashboard-card { grid-column: span 4; padding: 1.25rem; border: 1px solid #dde0eb; border-radius: 18px; background: #fff; box-shadow: 0 10px 30px rgba(20,33,61,.06); }
.i-dashboard-card--wide { grid-column: span 8; }
.i-dashboard-card--full { grid-column: 1 / -1; }
.i-dashboard-card h2 { font-family: var(--i-sans); font-size: 1.1rem; letter-spacing: 0; }
.i-dashboard-card .i-route-tags span { border-color: #cfc7f4; background: #f0edff; color: #4c36b5; }
.i-dashboard-eyebrow { display: block; margin-bottom: .45rem; color: #70798e; font-size: .68rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.i-progress-ring { --i-campus-progress: 50%; width: 132px; height: 132px; margin: 1rem auto; display: grid; place-items: center; border-radius: 50%; background: conic-gradient(var(--i-accent) var(--i-campus-progress), #e8eaf2 0); position: relative; transition: background .3s ease; }
.i-progress-ring::after { content: ""; position: absolute; width: 98px; height: 98px; border-radius: 50%; background: #fff; }
.i-progress-ring strong { position: relative; z-index: 1; color: var(--i-ink); font-size: 1.35rem; }
.i-campus-tasks { display: grid; gap: .55rem; }
.i-campus-task { display: flex; align-items: flex-start; gap: .65rem; padding: .7rem; border: 1px solid #e1e4ed; border-radius: 11px; cursor: pointer; }
.i-campus-task input { margin-top: .22rem; accent-color: var(--i-accent); }
.i-campus-task:has(input:checked) { background: #f0edff; border-color: #c8bff4; }
.i-campus-task:has(input:checked) span { text-decoration: line-through; color: #697287; }
.i-session-list { display: grid; gap: .7rem; }
.i-session { display: grid; grid-template-columns: 58px 1fr auto; gap: .8rem; align-items: center; padding: .75rem; border-radius: 12px; background: #f7f8fc; }
.i-session time { color: var(--i-accent-dark); font-weight: 900; }
.i-session strong { display: block; color: var(--i-ink); }
.i-session small { color: #727b90; }
.i-session span { padding: .25rem .5rem; border-radius: 999px; background: #e8f4ee; color: #17644e; font-size: .7rem; font-weight: 800; }
.i-campus-resource { display: flex; align-items: center; gap: .75rem; padding: .8rem 0; border-top: 1px solid #e4e6ee; }
.i-campus-resource:first-of-type { border-top: 0; }
.i-campus-resource b { flex: none; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px; background: #ece8ff; color: #4c36b5; }
.i-campus-resource strong { display: block; color: var(--i-ink); }
.i-campus-resource small { color: #727b90; }
.i-campus-cover { position: relative; min-height: 175px; margin: -1.25rem -1.25rem 1.25rem; overflow: hidden; border-radius: 18px 18px 0 0; }
.i-campus-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.i-campus-cover::after { content: "Ruta activa"; position: absolute; left: 1rem; bottom: 1rem; padding: .35rem .65rem; border-radius: 999px; background: rgba(16,24,44,.82); color: #fff; font-size: .7rem; font-weight: 850; }

@keyframes i-route-in {
  from { opacity: 0; transform: translateY(18px) scale(.98); }
  to { opacity: 1; transform: none; }
}

/* Diferencias visibles entre planes */
.i-tier--essential { --i-max: 980px; --i-radius: 10px; --i-shadow: 0 10px 28px rgba(20,33,61,.1); }
.i-tier--essential h1, .i-tier--essential h2 { font-family: var(--i-sans); }
.i-tier--essential .i-nav { position: static; top: auto; background: var(--i-bg); }
.i-tier--essential .i-hero { padding-block: clamp(3.5rem, 8vw, 6rem); }
.i-tier--essential .i-visual { min-height: 300px; border-radius: 10px; }
.i-tier--essential .i-card { box-shadow: none; }
.i-tier--essential .i-card:hover { transform: none; box-shadow: none; }
.i-tier--essential .i-highlights__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); box-shadow: 0 12px 32px rgba(20,33,61,.08); }
.i-tier--essential .i-visual__bubble { display: none; }

.i-tier--premium { --i-bg: #f3f5f9; --i-surface: #fff; --i-accent: #7357e8; --i-accent-dark: #4c36b5; --i-pop: #b9f26a; --i-line: #d7dbea; }
.i-tier--premium .i-brand__mark { background: linear-gradient(135deg, #7357e8, #4c36b5); }
.i-tier--premium .i-hero { background: radial-gradient(circle at 80% 20%, rgba(185,242,106,.2), transparent 27%), #10182c; color: #dfe5f3; }
.i-tier--premium .i-hero h1 { color: #fff; }
.i-tier--premium .i-hero::before { background: rgba(115,87,232,.3); }
.i-tier--premium .i-visual { background: linear-gradient(145deg, #7257e7, #27345b); box-shadow: 0 28px 80px rgba(7, 14, 35, .45); }
.i-tier--premium .i-card { box-shadow: 0 12px 35px rgba(20,33,61,.07); }
.i-tier--premium .i-highlight span { color: var(--i-accent-dark); }
.i-tier--premium .i-highlights__grid { border-color: #cfd5e7; box-shadow: 0 24px 65px rgba(20,33,61,.14); }
.i-tier--premium .i-level { background: linear-gradient(145deg, #fff, #f7f8fc); }

/* Movimiento progresivo para las versiones Profesional y Premium */
.i-tier--professional .i-nav.is-scrolled,
.i-tier--premium .i-nav.is-scrolled { box-shadow: 0 14px 38px rgba(20,33,61,.13); }
.i-tier--professional .i-nav.is-scrolled .i-nav__inner,
.i-tier--premium .i-nav.is-scrolled .i-nav__inner { min-height: 60px; }
.i-tier--professional .i-nav__inner,
.i-tier--premium .i-nav__inner { transition: min-height .22s ease; }

.i-scroll-progress {
  position: fixed; z-index: 220; inset: 0 0 auto; height: 3px;
  background: linear-gradient(90deg, var(--i-accent), var(--i-pop));
  transform: scaleX(0); transform-origin: left center; pointer-events: none;
}

.i-motion-ready .i-tier--professional .i-reveal,
.i-motion-ready .i-tier--premium .i-reveal {
  opacity: 0;
  transform: translateY(30px) scale(.985);
  transition: opacity .65s cubic-bezier(.2,.7,.2,1), transform .65s cubic-bezier(.2,.7,.2,1);
  transition-delay: var(--i-reveal-delay, 0ms);
}
.i-motion-ready .i-tier--professional .i-reveal.is-visible,
.i-motion-ready .i-tier--premium .i-reveal.is-visible { opacity: 1; transform: none; }

.i-tier--professional .i-hero__copy,
.i-tier--premium .i-hero__copy { animation: i-copy-in .72s cubic-bezier(.2,.75,.2,1) both; }
.i-tier--professional .i-hero .i-visual,
.i-tier--premium .i-hero .i-visual {
  --i-tilt-x: 0deg;
  --i-tilt-y: 0deg;
  animation: i-visual-in .85s cubic-bezier(.2,.75,.2,1) .08s both;
  transform: perspective(1000px) rotateX(var(--i-tilt-x)) rotateY(var(--i-tilt-y));
  transform-style: preserve-3d;
  transition: transform .18s ease-out, box-shadow .25s ease;
}
.i-tier--professional .i-hero .i-visual:hover,
.i-tier--premium .i-hero .i-visual:hover { box-shadow: 0 32px 75px rgba(20,33,61,.22); }
.i-tier--professional .i-orbit,
.i-tier--premium .i-orbit { animation: i-orbit 16s linear infinite; }
.i-tier--professional .i-visual__card,
.i-tier--premium .i-visual__card { animation: i-float-card 4.8s ease-in-out infinite; }
.i-tier--professional .i-visual__bubble,
.i-tier--premium .i-visual__bubble { animation: i-float-bubble 3.8s ease-in-out .4s infinite; }
.i-tier--professional .i-page-hero::after,
.i-tier--premium .i-page-hero::after { animation: i-letter-drift 7s ease-in-out infinite; }

.i-tier--professional .i-card,
.i-tier--premium .i-card { position: relative; overflow: hidden; }
.i-tier--professional .i-card::after,
.i-tier--premium .i-card::after {
  content: ""; position: absolute; inset: -60% auto -60% -35%; width: 22%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.7), transparent);
  transform: rotate(18deg) translateX(-250%); transition: transform .65s ease; pointer-events: none;
}
.i-tier--professional .i-card:hover::after,
.i-tier--premium .i-card:hover::after { transform: rotate(18deg) translateX(750%); }
.i-tier--professional .i-gallery__item,
.i-tier--premium .i-gallery__item { transition: transform .28s ease, filter .28s ease; }
.i-tier--professional .i-gallery__item:hover,
.i-tier--premium .i-gallery__item:hover { transform: translateY(-5px) scale(1.015); filter: saturate(1.12); }
.i-tier--professional .i-highlight,
.i-tier--premium .i-highlight { transition: background .22s ease, transform .22s ease; }
.i-tier--professional .i-highlight:hover,
.i-tier--premium .i-highlight:hover { background: color-mix(in srgb, var(--i-accent) 7%, var(--i-surface)); transform: translateY(-3px); }
.i-tier--professional .i-level,
.i-tier--premium .i-level { transition: transform .2s ease, box-shadow .2s ease; }
.i-tier--professional .i-level:hover,
.i-tier--premium .i-level:hover { transform: translateY(-5px); box-shadow: 0 15px 35px rgba(20,33,61,.1); }
.i-tier--premium .i-btn--primary { animation: i-cta-glow 3.2s ease-in-out infinite; }
.i-result.is-updated { animation: i-result-pop .42s cubic-bezier(.2,.8,.2,1); }

@keyframes i-copy-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: none; }
}
@keyframes i-visual-in {
  from { opacity: 0; transform: perspective(1000px) translateY(30px) rotateY(-7deg) scale(.96); }
  to { opacity: 1; transform: perspective(1000px) rotateX(var(--i-tilt-x)) rotateY(var(--i-tilt-y)); }
}
@keyframes i-orbit { to { transform: rotate(360deg); } }
@keyframes i-float-card {
  0%, 100% { transform: rotate(-2deg) translateY(0); }
  50% { transform: rotate(-1deg) translateY(-9px); }
}
@keyframes i-float-bubble {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(7px) rotate(1deg); }
}
@keyframes i-letter-drift {
  0%, 100% { transform: translateY(-50%) rotate(-8deg); }
  50% { transform: translateY(-54%) rotate(-4deg); }
}
@keyframes i-cta-glow {
  0%, 100% { box-shadow: 0 8px 22px rgba(76,54,181,.22); }
  50% { box-shadow: 0 10px 30px rgba(115,87,232,.4); }
}
@keyframes i-result-pop {
  0% { transform: scale(.97); opacity: .55; }
  100% { transform: none; opacity: 1; }
}

.i-footer { padding-block: 2.5rem 5rem; background: #10182c; color: #b9c0d0; }
.i-footer__in { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.i-footer a { color: #fff; }

:focus-visible { outline: 3px solid #2f5bea; outline-offset: 3px; }

@media (max-width: 980px) {
  .i-nav__toggle { display: block; }
  .i-nav__links { position: absolute; inset: 100% 0 auto; display: none; flex-direction: column; align-items: stretch; padding: .75rem 1rem 1rem; border-bottom: 1px solid var(--i-line); background: var(--i-bg); box-shadow: var(--i-shadow); }
  .i-nav__links.open { display: flex; }
  .i-nav__links a { min-height: 46px; display: flex; align-items: center; }
  .i-nav__links a[href="contacto.html"], .i-nav__links a[href="matricula.html"], .i-nav__links a[href="#contacto"] { margin-left: 0; }
}

@media (max-width: 860px) {
  .i-hero__grid, .i-split, .i-contact { grid-template-columns: 1fr; }
  .i-visual { min-height: 330px; }
  .i-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .i-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .i-highlights__grid, .i-tier--essential .i-highlights__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .i-highlight:nth-child(3) { border-left: 0; border-top: 1px solid var(--i-line); }
  .i-highlight:nth-child(4) { border-top: 1px solid var(--i-line); }
  .i-tier--essential .i-highlight:nth-child(3) { grid-column: 1 / -1; }
  .i-levels { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .i-photo-band { grid-template-columns: 1fr 1fr; }
  .i-photo-band figure:first-child { grid-column: 1 / -1; }
  .i-wizard-layout { grid-template-columns: 1fr; }
  .i-wizard-aside { position: static; }
  .i-route-result { grid-template-columns: 1fr; align-items: start; }
  .i-route-result__actions { justify-content: flex-start; }
  .i-campus-shell { grid-template-columns: 1fr; }
  .i-campus-side { padding-bottom: 1rem; }
  .i-campus-nav { display: flex; flex-wrap: wrap; margin: 1.25rem 0; }
  .i-campus-side__note { max-width: 54ch; }
  .i-dashboard-card { grid-column: span 6; }
  .i-dashboard-card--wide, .i-dashboard-card--full { grid-column: 1 / -1; }
}

@media (max-width: 580px) {
  .i-grid, .i-grid--2, .i-grid--4 { grid-template-columns: 1fr; }
  .i-highlights { margin-top: -1rem; }
  .i-highlights__grid, .i-tier--essential .i-highlights__grid { grid-template-columns: 1fr; }
  .i-highlight, .i-highlight:first-child, .i-highlight:nth-child(3), .i-highlight:nth-child(4) { grid-column: auto; border-left: 0; border-top: 1px solid var(--i-line); min-height: 0; }
  .i-highlight:first-child { border-top: 0; }
  .i-levels { grid-template-columns: 1fr 1fr; }
  .i-gallery { grid-template-columns: 1fr 1fr; grid-auto-rows: 135px; }
  .i-gallery__item:first-child { grid-column: 1 / -1; grid-row: auto; }
  .i-photo-band { grid-template-columns: 1fr; }
  .i-photo-band figure:first-child { grid-column: auto; min-height: 230px; }
  .i-visual { min-height: 280px; }
  .i-footer__in { align-items: flex-start; flex-direction: column; }
  .i-schedule { font-size: .82rem; }
  .i-schedule th, .i-schedule td { padding: .55rem .35rem; }
  .i-choice-grid { grid-template-columns: 1fr; }
  .i-choice span { min-height: 0; }
  .i-wizard__status { align-items: flex-start; flex-direction: column; }
  .i-wizard__controls { flex-wrap: wrap; }
  .i-wizard-ready [data-wizard-next], .i-wizard-ready [data-wizard-submit] { margin-left: auto; }
  .i-campus { width: 100%; }
  .i-campus-shell { border-radius: 0; border-inline: 0; }
  .i-campus-main { padding-inline: 1rem; }
  .i-campus-head { flex-direction: column; }
  .i-dashboard-card, .i-dashboard-card--wide, .i-dashboard-card--full { grid-column: 1 / -1; }
  .i-session { grid-template-columns: 50px 1fr; }
  .i-session span { grid-column: 2; justify-self: start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .i-reveal { opacity: 1 !important; transform: none !important; }
  .i-tier--professional .i-hero .i-visual,
  .i-tier--premium .i-hero .i-visual { transform: none !important; }
  .i-scroll-progress { display: none; }
}