/* ==========================================================
   Instituto MCM · Hoja de estilos
   1. Variables (cambia aquí colores, fuentes y medidas)
   2. Base
   3. Componentes (botones, cabecera, menú)
   4. Secciones
   5. Responsive y accesibilidad
   ========================================================== */

/* 1. VARIABLES ------------------------------------------- */
:root {
  /* Colores de marca */
  --navy: #3A4560;        /* azul de la espiral */
  --gold: #B8862F;        /* dorado de los puntos */
  --bg: #F9F8F5;          /* fondo marfil */
  --ink: #23231F;         /* texto principal */
  --muted: #5C5C57;       /* texto secundario */
  --line: #E4E1DA;        /* líneas y bordes */
  --sage: #DDE4DA;        /* verde salvia (bloques destacados) */

  /* Tipografía */
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Medidas */
  --max: 1200px;          /* ancho máximo del contenido */
  --pad: clamp(1.25rem, 4vw, 3rem);   /* margen lateral */
  --gap: clamp(4rem, 10vw, 8rem);     /* espacio entre secciones */
  --radius: 999px;        /* botones en forma de píldora */
}

/* 2. BASE ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.125rem/1.65 var(--sans);
  border-top: 8px solid var(--navy);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.1; margin: 0 0 1rem; }
h2 { font-size: clamp(2.2rem, 5vw, 3.5rem); color: var(--navy); }
h3 { font-size: 1.6rem; }
p { margin: 0 0 1rem; max-width: 62ch; }
.lead { font-size: clamp(1.2rem, 2vw, 1.45rem); color: var(--muted); }

/* 3. COMPONENTES ----------------------------------------- */

/* Botones */
.btn {
  display: inline-block;
  padding: .9rem 2rem;
  border: 1.5px solid var(--navy);
  border-radius: var(--radius);
  background: var(--navy);
  color: #fff;
  font: 500 1.125rem/1.4 var(--sans);   /* también en <button> */
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.btn:hover { background: #2B3348; }
.btn-outline { background: transparent; color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-light { background: var(--bg); color: var(--navy); border-color: var(--bg); }
.btn-light:hover { background: transparent; color: var(--bg); }
.actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.5rem; }

/* Cabecera */
.header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem var(--pad);
  background: rgb(249 248 245 / .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 1.25rem; text-decoration: none; }
.brand img { width: 3.5rem; }
.brand strong { display: block; font: 400 clamp(1.5rem, 3vw, 2.2rem)/1.1 var(--serif); }
.brand small { font-size: .95rem; color: var(--muted); }

/* Selector de idioma (ES · EN · CA) */
.lang { margin: 0 1rem 0 auto; display: flex; gap: 1.5rem; font-weight: 500; letter-spacing: .06em; }
.lang a { color: var(--muted); text-decoration: none; padding: .2rem 0; border-bottom: 2px solid transparent; }
.lang a:hover { color: var(--navy); }
.lang a[aria-current] { color: var(--navy); border-color: var(--navy); }

/* Menú desplegable (hipervínculos a cada sección) */
.menu-btn {
  font: 500 1.05rem var(--sans);
  color: var(--ink);
  background: transparent;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  padding: .7rem 1.8rem;
  cursor: pointer;
}
.menu-btn:hover, .menu-btn[aria-expanded="true"] { border-color: var(--navy); }
.nav {
  position: absolute; top: 100%; right: var(--pad);
  display: none; flex-direction: column;
  min-width: 15rem; padding: .75rem 0;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 1rem;
}
.nav.open { display: flex; }
.nav a { padding: .6rem 1.5rem; text-decoration: none; }
.nav a:hover { color: var(--gold); }

/* 4. SECCIONES ------------------------------------------- */
.hero, .section, .contact { max-width: var(--max); margin: 0 auto; padding: var(--gap) var(--pad) 0; }

/* Hero */
.hero { display: grid; grid-template-columns: 1.4fr 1fr; align-items: center; gap: 2rem; padding-top: clamp(3rem, 8vw, 7rem); }
.triad { display: flex; gap: 2.5rem; font-weight: 500; font-size: 1.2rem; margin-bottom: 1.5rem; }
.hero-title { font-size: clamp(3.5rem, 11vw, 9rem); font-weight: 300; letter-spacing: -.03em; line-height: 1; margin-bottom: 2.5rem; }
.hero-title span { display: block; }
.hero-title span:nth-child(2) { padding-left: .9em; color: var(--navy); }
.hero-title span:nth-child(3) { padding-left: 1.8em; }
.hero-mark { width: 100%; max-width: 480px; justify-self: center; animation: breathe 9s ease-in-out infinite; }
@keyframes breathe { 50% { transform: scale(1.04) rotate(-4deg); } }

/* Columnas genéricas */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1rem, 5vw, 5rem); margin-top: 2rem; }

/* Cita */
.quote { margin: 0; padding: 2.5rem; background: var(--sage); border-radius: 1.5rem; }
.quote p { font: 400 clamp(1.6rem, 3vw, 2.2rem)/1.25 var(--serif); color: var(--navy); }
.quote footer { color: var(--muted); }

/* Recorrido: 8 pasos numerados */
.steps { list-style: none; padding: 0; margin: 3rem 0 0; counter-reset: step;
  display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.steps li { counter-increment: step; padding: 1.75rem 1.5rem 1.75rem 0; border-bottom: 1px solid var(--line); }
.steps li::before { content: counter(step, decimal-leading-zero); color: var(--gold); font-weight: 600; }
.steps h3 { margin: .5rem 0; color: var(--navy); }
.steps p { color: var(--muted); font-size: 1rem; }

/* Equipo */
.team { list-style: none; padding: 0; margin: 3rem 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 2.5rem 2rem; }
.team img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 999px 999px 1.25rem 1.25rem; background: var(--sage); color: transparent; }
.team .animal { margin: 1.25rem 0 .25rem; color: var(--gold); font-weight: 600; font-size: .95rem; }
.team h3 { margin: 0; color: var(--navy); font-size: 1.9rem; }
.team p { font-size: 1rem; color: var(--muted); }
.team .role { color: var(--ink); font-weight: 500; margin-bottom: .75rem; }

/* Comunidad: franja a todo el ancho en verde salvia */
.community { margin-top: var(--gap); padding: var(--gap) var(--pad); background: var(--sage); }
.community-inner { max-width: calc(var(--max) - 2 * var(--pad)); margin: 0 auto; }

/* Información práctica */
.facts { display: grid; grid-template-columns: auto 1fr; gap: .9rem 2rem; margin: 0; align-content: start; }
.facts dt { color: var(--gold); font-weight: 600; }
.facts dd { margin: 0; }

/* Banda de naturaleza (foto sutil que se funde con el fondo) */
.nature {
  margin: var(--gap) 0 0;
  height: clamp(220px, 38vh, 420px);
  -webkit-mask-image: linear-gradient(transparent, #000 30%, #000 70%, transparent);
          mask-image: linear-gradient(transparent, #000 30%, #000 70%, transparent);
}
.nature img { width: 100%; height: 100%; object-fit: cover; opacity: .7; filter: saturate(.6); }

/* Contacto */
.contact {
  width: calc(100% - 2 * var(--pad));
  max-width: calc(var(--max) - 2 * var(--pad));
  margin-top: var(--gap);
  padding: clamp(3rem, 7vw, 5rem) var(--pad);
  text-align: center;
  background: var(--navy); color: var(--bg);
  border-radius: 2rem;
}
.contact > * { margin-inline: auto; }
.contact h2 { color: var(--bg); }
.contact .btn { margin-top: 1.5rem; font-size: 1.2rem; }

/* Pie */
.footer { text-align: center; padding: 3rem var(--pad); color: var(--muted); font-size: .95rem; }
.footer p { margin: 0 auto; }

/* Pie: enlaces legales */
.footer .legal-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.5rem; margin-top: .75rem; }

/* Página legal */
.legal { max-width: 52rem; }
.legal h1 { font-size: clamp(2.4rem, 6vw, 4rem); color: var(--navy); }
.legal h2 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); margin-top: 3.5rem; }
.legal .facts { margin: 1.5rem 0; }
.legal .facts dd { max-width: 60ch; }

/* 5. RESPONSIVE Y ACCESIBILIDAD -------------------------- */
@media (max-width: 900px) {
  .hero, .cols { grid-template-columns: 1fr; }
  .hero-mark { max-width: 200px; grid-row: 1; justify-self: start; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .team { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .brand small { display: none; }
  .brand { gap: .6rem; }
  .brand img { width: 2.5rem; }
  .brand strong { font-size: 1.25rem; }
  .lang { gap: .7rem; font-size: .9rem; margin-right: 0; }
  .menu-btn { padding: .55rem 1rem; }
  .triad { gap: 1.25rem; font-size: 1rem; }
  .steps, .team { grid-template-columns: 1fr; }
  .team img { max-height: 22rem; }
  .contact { border-radius: 1.25rem; }
}
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-mark { animation: none; }
}