/* Academia Chamberí - base web (reset + componentes estructurales compartidos)
   Mobile-first. Las variantes solo cambian la piel, no la estructura. */

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
:focus-visible { outline: 3px solid var(--spark); outline-offset: 3px; }

/* --- Layout --- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.wrap--narrow { max-width: var(--maxw-narrow); }
.section { padding-block: var(--space-6); }
.section--tight { padding-block: var(--space-5); }

/* --- Tipografía --- */
.display { font-family: var(--font-display); font-weight: 800; line-height: var(--lh-tight); letter-spacing: var(--tracking-tight); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: var(--lh-snug); letter-spacing: var(--tracking-tight); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { max-width: 62ch; }
.lead { font-size: var(--fs-xl); line-height: 1.35; max-width: 40ch; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--accent-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before { content: ""; width: 1.4em; height: var(--rule); background: var(--accent); }

.mono { font-family: var(--font-mono); }

/* --- Botones --- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--font-mono); font-weight: 600; line-height: 1;
  font-size: var(--fs-sm); letter-spacing: 0.04em; text-transform: uppercase;
  padding: 0.95em 1.5em; border: var(--rule) solid var(--ink);
  background: var(--accent-ink); color: var(--on-accent); cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-btn-hover); }
.btn--ghost { background: transparent; color: var(--fg); }
.btn--spark { background: var(--spark-ink); color: #fff; border-color: var(--ink); }
.btn--lg { font-size: var(--fs-base); padding: 1.1em 1.8em; }

/* --- Navegación --- */
.nav { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: var(--rule) solid var(--ink); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding-block: 0.6rem; }
.nav__menu { display: none; align-items: center; gap: var(--space-3); font-family: var(--font-mono); font-size: var(--fs-sm); font-weight: 500; }
.nav__menu a:not(.btn) { padding-block: 0.75rem; margin-block: -0.75rem; }
.nav__menu a:not(.btn):hover { color: var(--accent-ink); }
/* Enlace activo: subrayado con pseudo-elemento (no cambia el padding, así el texto NO se descuadra respecto al resto) */
.nav__menu a[aria-current="page"] { color: var(--accent-ink); position: relative; }
.nav__menu a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0.5rem; height: 3px; background: var(--accent); }
.nav__cta { display: flex; align-items: center; gap: var(--space-2); }
/* CTA del nav: más compacto que un .btn normal para que respire dentro del header */
.nav__trial { white-space: nowrap; }
.nav__burger { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 42px; height: 42px; padding: 11px 9px; background: none; border: var(--rule) solid var(--ink); cursor: pointer; }
.nav__burger span { display: block; height: 2.5px; background: var(--ink); border-radius: 2px; }
.nav__burger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
.nav__burger span { transition: transform .15s ease, opacity .15s ease; }

/* Logotipo provisional (isotipo de retícula + wordmark) */
.logo { display: flex; align-items: center; gap: 0.7rem; }
.logo__mark { display: grid; grid-template-columns: repeat(5, 1fr); gap: 2px; width: 34px; height: 34px; flex: none; }
.logo__mark i { background: var(--ink); }
.logo__mark i.g { background: var(--green); }
.logo__word { font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; line-height: 1; letter-spacing: -0.01em; white-space: nowrap; }
.logo__word small { display: block; font-family: var(--font-mono); font-weight: 600; font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin-top: 2px; white-space: nowrap; }

/* --- Footer --- */
.footer { background: var(--ink); color: #fff; padding-block: var(--space-6) var(--space-4); }
.footer a:hover { color: var(--green-light); }
.footer__grid { display: grid; gap: var(--space-4); grid-template-columns: 1fr; }
.footer__col h4 { font-family: var(--font-mono); font-size: var(--fs-eyebrow); letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--green-light); margin-bottom: var(--space-2); }
.footer__col li { margin-bottom: 0.4rem; font-size: var(--fs-sm); color: var(--on-dark-soft); }
.footer__col li a { display: inline-flex; align-items: center; min-height: 44px; margin-block: -12px; }
.footer__bottom { margin-top: var(--space-5); padding-top: var(--space-3); border-top: 1px solid #333; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: #888; display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: space-between; }

/* --- Marcador de contenido pendiente (foto real, dato a confirmar) --- */
.ph {
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: repeating-linear-gradient(45deg, var(--gray-100), var(--gray-100) 12px, var(--gray-200) 12px, var(--gray-200) 24px);
  border: var(--rule) dashed var(--gray-500);
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--gray-700); padding: 1rem; min-height: 220px;
}

/* --- Reveal accesible (respeta prefers-reduced-motion) --- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
  .reveal.in { opacity: 1; transform: none; }
}

/* --- Breakpoints --- */
@media (max-width: 879px) {
  .nav__menu.open { display: flex; flex-direction: column; align-items: stretch; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg); border-bottom: var(--rule) solid var(--ink); padding: var(--space-3) var(--gutter); gap: var(--space-3); }
  .nav__menu.open .nav__trial { align-self: flex-start; }
}
@media (min-width: 880px) {
  .nav__menu { display: flex; }
  .nav__burger { display: none; }
  .footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}