/* La profe Noe — cuaderno de cuadrícula + boli de cuatro colores + fosforito.
   Layout: columna única de lectura (máx. 1120px) con hero a dos columnas que apila en móvil. */
:root {
  --paper: #fafbfd;
  --surface: #ffffff;
  --ink: #171b26;
  --muted: #535a6b;
  --line: #dce1eb;
  --grid: #e9edf5;
  --azul: #1f3fa8;
  --azul-soft: #e8edfb;
  --rojo: #c4302c;
  --rojo-soft: #fbeaea;
  --verde: #1d7449;
  --verde-soft: #e6f3ec;
  --fosfo: #ffe45c;
  --fosfo-ink: #171b26;
  --mark: #ffe45c;
  --on-accent: #ffffff;
  --shadow: 0 1px 2px rgba(23, 27, 38, .06), 0 8px 24px rgba(23, 27, 38, .06);

  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", "Segoe UI", system-ui, -apple-system, sans-serif;
  --hand: "Caveat", "Segoe Print", "Comic Sans MS", cursive;

  --fs-sm: .875rem;
  --fs-base: 1.0625rem;
  --fs-md: 1.25rem;
  --fs-lg: 1.625rem;
  --fs-xl: clamp(1.9rem, 1.4rem + 2vw, 2.6rem);
  --fs-2xl: clamp(2.3rem, 1.6rem + 3.2vw, 3.6rem);

  --radius: 14px;
  --wrap: 1120px;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #10141d; --surface: #171c27; --ink: #e9ecf2; --muted: #a6adbd;
    --line: #2b3243; --grid: #192030; --azul: #93a8ff; --azul-soft: #1b2440;
    --rojo: #ff8f86; --rojo-soft: #34191b; --verde: #72d6a3; --verde-soft: #13291f;
    --fosfo: #e8cb3e; --fosfo-ink: #14161d; --mark: rgba(232, 203, 62, .38); --on-accent: #10141d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #10141d; --surface: #171c27; --ink: #e9ecf2; --muted: #a6adbd;
  --line: #2b3243; --grid: #192030; --azul: #93a8ff; --azul-soft: #1b2440;
  --rojo: #ff8f86; --rojo-soft: #34191b; --verde: #72d6a3; --verde-soft: #13291f;
  --fosfo: #e8cb3e; --fosfo-ink: #14161d; --mark: rgba(232, 203, 62, .38); --on-accent: #10141d;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: var(--fs-base);
  line-height: 1.65;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--azul); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--azul); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3, h4 { font-family: var(--display); line-height: 1.12; letter-spacing: -.02em; margin: 0; text-wrap: balance; color: var(--ink); }
h1 { font-size: var(--fs-2xl); font-weight: 800; }
h2 { font-size: var(--fs-xl); font-weight: 800; }
h3 { font-size: var(--fs-md); font-weight: 700; }
p { margin: 0; }
mark, .fosfo {
  background: linear-gradient(transparent 52%, var(--mark) 52%, var(--mark) 92%, transparent 92%);
  color: inherit; padding: 0 .08em;
}
.skip { position: absolute; left: -999px; top: 8px; background: var(--azul); color: var(--on-accent); padding: 8px 14px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 16px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }
.section { padding-block: clamp(56px, 8vw, 96px); }
.section-head { display: grid; gap: 12px; max-width: 46rem; margin-bottom: 36px; }
.eyebrow { font-size: var(--fs-sm); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.lead { font-size: var(--fs-md); color: var(--muted); max-width: 40rem; }
.hand { font-family: var(--hand); font-weight: 600; }

/* ---------- Cabecera ---------- */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--paper); }
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: var(--azul); color: var(--on-accent); font-family: var(--hand); font-size: 1.55rem; font-weight: 600; line-height: 1;
}
.brand-name { font-family: var(--display); font-weight: 800; font-size: 1.2rem; letter-spacing: -.02em; line-height: 1; }
.brand-name small { display: block; font-family: var(--body); font-weight: 400; font-size: .75rem; color: var(--muted); letter-spacing: 0; margin-top: 3px; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 2px; }
.nav a { display: block; padding: 8px 12px; border-radius: 8px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: .95rem; }
.nav a:hover { background: var(--azul-soft); }
.nav a[aria-current="page"] { color: var(--azul); }
.menu-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--ink); border-radius: 10px; padding: 8px 12px; font: inherit; font-weight: 700; cursor: pointer; }
@media (max-width: 880px) {
  .menu-toggle { display: inline-flex; }
  .nav ul {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; gap: 0; background: var(--surface); border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter-r) 16px var(--gutter-l); box-shadow: var(--shadow);
  }
  .nav ul.open { display: flex; }
  .nav a { padding: 12px 8px; font-size: 1.05rem; }
  .nav .btn { display: none; }
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px; font-weight: 700; font-size: 1rem; line-height: 1.2;
  text-decoration: none; border: 2px solid transparent; cursor: pointer; font-family: var(--body);
}
.btn-primary { background: var(--azul); color: var(--on-accent); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn-ghost:hover { border-color: var(--azul); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Hero ---------- */
.hero {
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  border-bottom: 1px solid var(--line);
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(32px, 5vw, 64px); align-items: center; padding-block: clamp(40px, 7vw, 88px); }
.hero-copy { display: grid; gap: 22px; min-width: 0; }
.hero-copy .lead { color: var(--muted); }
.trust { list-style: none; margin: 4px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: var(--fs-sm); color: var(--muted); }
.trust li { display: flex; align-items: center; gap: 6px; }
.trust svg { width: 18px; height: 18px; color: var(--verde); flex: none; }
.photo { position: relative; justify-self: center; width: min(100%, 360px); }
.photo img { border-radius: 18px; border: 6px solid var(--surface); box-shadow: var(--shadow); transform: rotate(1.5deg); background: var(--surface); }
.photo-note {
  position: absolute; left: -18px; bottom: -22px; background: var(--fosfo); color: var(--fosfo-ink);
  font-family: var(--hand); font-weight: 600; font-size: 1.6rem; line-height: 1; padding: 10px 16px 12px; border-radius: 6px;
  transform: rotate(-4deg); box-shadow: var(--shadow);
}
@media (max-width: 820px) {
  .hero-grid { grid-template-columns: 1fr; }
  .photo { order: -1; width: min(70%, 260px); }
  .photo-note { font-size: 1.3rem; left: -10px; }
}

/* ---------- Tarjetas de clases (un color de boli por servicio) ---------- */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr; } }
.card {
  --c: var(--azul); --c-soft: var(--azul-soft);
  display: grid; grid-template-rows: auto auto 1fr auto; gap: 12px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px 24px; position: relative; text-decoration: none; color: var(--ink);
  transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card.rojo { --c: var(--rojo); --c-soft: var(--rojo-soft); }
.card.verde { --c: var(--verde); --c-soft: var(--verde-soft); }
.tag {
  justify-self: start; font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: var(--c); background: var(--c-soft); padding: 4px 10px; border-radius: 999px;
}
.card h3 { font-size: 1.4rem; }
.card p { color: var(--muted); }
.card .more { font-weight: 700; color: var(--c); }

/* ---------- Pasos (secuencia real) ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; counter-reset: paso; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.steps li { counter-increment: paso; display: grid; gap: 8px; align-content: start; border-top: 2px solid var(--ink); padding-top: 16px; }
.steps li::before { content: "Paso " counter(paso); font-family: var(--hand); font-size: 1.5rem; font-weight: 600; color: var(--azul); line-height: 1; }
.steps p { color: var(--muted); }

/* ---------- Clase tipo (horario) ---------- */
.timeline { display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.timeline div { display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: 16px; padding: 14px 20px; border-top: 1px solid var(--line); }
.timeline div:first-child { border-top: 0; }
.timeline b { font-family: var(--display); font-variant-numeric: tabular-nums; color: var(--azul); }

/* ---------- Dos columnas genéricas ---------- */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.stack { display: grid; gap: 18px; min-width: 0; }

/* ---------- Zonas ---------- */
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 6px 14px; font-size: .95rem; }
.chips li.main { border-color: var(--azul); color: var(--azul); font-weight: 700; }

/* ---------- Precio ---------- */
.price {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px;
  display: grid; gap: 14px; box-shadow: var(--shadow);
}
.price-amount { font-family: var(--display); font-weight: 800; font-size: 3.2rem; line-height: 1; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.price-amount span { font-size: 1.1rem; font-weight: 600; color: var(--muted); letter-spacing: 0; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.checks li { position: relative; padding-left: 28px; }
.checks li::before {
  content: ""; position: absolute; left: 2px; top: .35em; width: 14px; height: 8px;
  border-left: 3px solid var(--verde); border-bottom: 3px solid var(--verde); transform: rotate(-45deg);
}

/* ---------- Blog ---------- */
.posts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
@media (max-width: 900px) { .posts { grid-template-columns: 1fr; } }
.post-card { display: grid; grid-template-rows: auto 1fr; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--ink); transition: transform .15s ease, box-shadow .15s ease; }
.post-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.post-card .body { display: grid; gap: 10px; padding: 20px 22px 24px; align-content: start; }
.post-card h3 { font-size: 1.25rem; }
.post-card p { color: var(--muted); font-size: .98rem; }
.meta { font-size: var(--fs-sm); color: var(--muted); }
.cover {
  --c: var(--azul); --c-soft: var(--azul-soft);
  aspect-ratio: 16 / 8; max-width: 100%; position: relative; overflow: hidden;
  background-color: var(--c-soft);
  background-image: linear-gradient(color-mix(in srgb, var(--c) 14%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--c) 14%, transparent) 1px, transparent 1px);
  background-size: 20px 20px;
  display: grid; place-items: center;
}
.cover.rojo { --c: var(--rojo); --c-soft: var(--rojo-soft); }
.cover.verde { --c: var(--verde); --c-soft: var(--verde-soft); }
.cover span { font-family: var(--hand); font-weight: 600; font-size: clamp(2.2rem, 5vw, 3.2rem); color: var(--c); transform: rotate(-3deg); line-height: 1; text-align: center; padding: 0 16px; }
.cover.big { aspect-ratio: 16 / 6; border-radius: var(--radius); }

/* ---------- Artículo / páginas de texto ---------- */
.page-head { padding-block: clamp(36px, 6vw, 64px) 8px; display: grid; gap: 16px; }
.crumbs { font-size: var(--fs-sm); color: var(--muted); }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--line); }
.crumbs a { color: var(--muted); }
.prose { max-width: 68ch; display: grid; gap: 1.1em; min-width: 0; }
.prose h2 { font-size: var(--fs-lg); margin-top: .9em; }
.prose h3 { margin-top: .5em; }
.prose ul, .prose ol { margin: 0; padding-left: 1.3em; display: grid; gap: .45em; }
.prose blockquote { margin: 0; padding: 16px 20px; border-left: 4px solid var(--fosfo); background: var(--surface); border-radius: 0 10px 10px 0; }
.note-box { background: var(--azul-soft); border-radius: var(--radius); padding: 20px 22px; display: grid; gap: 8px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: clamp(28px, 5vw, 64px); align-items: start; padding-block: 24px clamp(56px, 8vw, 96px); }
@media (max-width: 920px) { .article-layout { grid-template-columns: 1fr; } }
.aside { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 88px); display: grid; gap: 16px; }
@media (max-width: 920px) { .aside { position: static; } }
.author { display: flex; gap: 14px; align-items: center; }
.author img { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 10px; max-width: 52rem; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 4px 20px; }
.faq summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--display); font-size: 1.4rem; line-height: 1; color: var(--azul); }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding-bottom: 16px; color: var(--muted); }

/* ---------- Banda CTA ---------- */
.cta-band { background: var(--azul); color: var(--on-accent); }
.cta-band .wrap { padding-block: clamp(44px, 6vw, 72px); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.cta-band h2 { color: var(--on-accent); max-width: 30rem; }
.cta-band p { opacity: .9; margin-top: 8px; }
.cta-band .btn-primary { background: var(--fosfo); color: var(--fosfo-ink); }

/* ---------- Formulario ---------- */
.form { display: grid; gap: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(20px, 4vw, 32px); }
.field { display: grid; gap: 6px; }
.field label { font-weight: 700; font-size: .95rem; }
.field input, .field select, .field textarea {
  font: inherit; color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; width: 100%;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--azul); outline-offset: 1px; border-color: var(--azul); }
.row2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 600px) { .row2 { grid-template-columns: 1fr; } }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: .92rem; color: var(--muted); }
.consent input { margin-top: 5px; width: 18px; height: 18px; flex: none; }
.hidden-field { position: absolute; left: -9999px; }
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.contact-list li { display: grid; gap: 2px; }
.contact-list b { font-size: var(--fs-sm); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }

/* ---------- Pie ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); font-size: .95rem; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 32px; padding-block: 48px 32px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; font-family: var(--body); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.footer-grid a { color: var(--ink); text-decoration: none; }
.footer-grid a:hover { color: var(--azul); text-decoration: underline; }
.footer-grid p { color: var(--muted); }
.footer-bottom { border-top: 1px solid var(--line); padding-block: 18px; color: var(--muted); font-size: var(--fs-sm); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

/* ---------- Botón flotante de WhatsApp ---------- */
.wa-float {
  position: fixed; z-index: 25;
  right: calc(18px + env(safe-area-inset-right, 0px)); bottom: calc(18px + env(safe-area-inset-bottom, 0px));
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px 12px 14px; border-radius: 999px;
  background: #1f9d55; color: #fff; font-weight: 700; text-decoration: none; box-shadow: 0 6px 20px rgba(0, 0, 0, .22);
}
.wa-float svg { width: 24px; height: 24px; }
@media (max-width: 520px) { .wa-float span { display: none; } .wa-float { padding: 14px; } }

/* ---------- Packs mensuales ---------- */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
@media (max-width: 860px) { .plans { grid-template-columns: 1fr; } }
.plan {
  position: relative; display: grid; gap: 10px; align-content: start;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px 24px;
}
.plan.best { border: 2px solid var(--azul); background: linear-gradient(var(--azul-soft), var(--surface) 70%); box-shadow: var(--shadow); }
.plan-flag {
  position: absolute; top: -13px; right: 20px; background: var(--fosfo); color: var(--fosfo-ink);
  font-family: var(--hand); font-weight: 600; font-size: 1.3rem; line-height: 1; padding: 5px 12px 7px; border-radius: 6px; transform: rotate(2deg);
}
.plan h3 { font-size: 1.35rem; }
.plan h3 span { font-family: var(--body); font-weight: 400; font-size: 1rem; color: var(--muted); letter-spacing: 0; }
.plan-month { display: flex; align-items: baseline; gap: 6px; font-variant-numeric: tabular-nums; }
.plan-month b { font-family: var(--display); font-weight: 800; font-size: 3rem; line-height: 1; letter-spacing: -.03em; }
.plan-month span { color: var(--muted); font-weight: 700; }
.plan-rate { color: var(--muted); font-variant-numeric: tabular-nums; }
.plan-rate b { color: var(--ink); }
.save { justify-self: start; margin-top: 4px; font-size: .9rem; font-weight: 700; color: var(--verde); background: var(--verde-soft); padding: 5px 12px; border-radius: 999px; font-variant-numeric: tabular-nums; }
.save.base { color: var(--muted); background: var(--grid); }
.plans-note { margin-top: 16px; }
.price-amount .from { display: block; font-family: var(--body); font-size: .95rem; font-weight: 700; color: var(--muted); margin-bottom: 4px; }
.mini-plans { list-style: none; margin: 0; padding: 0; display: grid; border-top: 1px solid var(--line); }
.mini-plans li { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.mini-plans small { display: block; color: var(--muted); font-size: .85rem; }