/* =========================================================================
   Fundación Colombiana de Medicina Forense (FCMF)
   Sitio institucional — one-pager estático
   Identidad: Manual de Marca FCMF (azul navy, Nunito Sans)
   ========================================================================= */

:root {
  /* Paleta oficial */
  --navy:        #003366;
  --corp:        #1A5276;
  --medio:       #2E86C1;
  --claro:       #AED6F1;
  --palido:      #D6EAF8;
  --negro:       #0D0D0D;
  --gris-oscuro: #2C2C2C;
  --gris-medio:  #7F8C8D;
  --gris-claro:  #D5D8DC;
  --blanco:      #FFFFFF;

  /* Roles */
  --texto:       #1c2b3a;
  --texto-suave: #4a5a6a;
  --fondo:       #ffffff;
  --fondo-alt:   #f4f8fc;

  --maxw: 1080px;
  --radio: 10px;
  --sombra: 0 6px 24px rgba(0, 51, 102, .08);
  --transicion: .2s ease;

  --fuente: "Nunito Sans", Arial, "Segoe UI", system-ui, sans-serif;
}

/* ---------- Reset básico ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--fuente);
  font-weight: 400;
  color: var(--texto);
  background: var(--fondo);
  line-height: 1.65;
  font-size: 1.05rem;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--corp); text-decoration: none; transition: color var(--transicion); }
a:hover { color: var(--medio); }
h1, h2, h3 { line-height: 1.2; color: var(--navy); margin: 0 0 .5em; }
h1 { font-weight: 800; font-size: clamp(2rem, 5vw, 3.1rem); letter-spacing: -.01em; }
h2 { font-weight: 700; font-size: clamp(1.5rem, 3.5vw, 2.1rem); }
h3 { font-weight: 700; font-size: 1.2rem; }
p  { margin: 0 0 1rem; max-width: 70ch; }

/* ---------- Accesibilidad ---------- */
:focus-visible { outline: 3px solid var(--medio); outline-offset: 2px; border-radius: 4px; }
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 1000;
  background: var(--navy); color: #fff; padding: .7rem 1.2rem; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; color: #fff; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Layout ---------- */
.contenedor { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.seccion { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.seccion--alt { background: var(--fondo-alt); }
.seccion__intro { max-width: 60ch; margin-bottom: 2.5rem; }
.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--medio); margin-bottom: .8rem;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--fuente); font-weight: 700; font-size: 1rem;
  padding: .8rem 1.5rem; border-radius: 999px; border: 2px solid transparent;
  cursor: pointer; transition: all var(--transicion); text-align: center;
}
.btn--primario { background: var(--medio); color: #fff; }
.btn--primario:hover { background: var(--corp); color: #fff; transform: translateY(-1px); }
.btn--contorno { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn--contorno:hover { background: var(--navy); color: #fff; }
.btn--claro { background: #fff; color: var(--navy); }
.btn--claro:hover { background: var(--palido); color: var(--navy); }
.btn--fantasma { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.btn--fantasma:hover { background: rgba(255,255,255,.12); color: #fff; }

/* =========================================================================
   Encabezado / navegación
   ========================================================================= */
.cabecera {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.95); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--gris-claro);
}
.cabecera__barra {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .6rem 0; min-height: 64px;
}
.cabecera__logo img { height: 44px; width: auto; }
.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav__lista { display: flex; gap: 1.4rem; list-style: none; margin: 0; padding: 0; }
.nav__lista a {
  color: var(--gris-oscuro); font-weight: 600; font-size: .95rem;
  padding: .3rem 0; border-bottom: 2px solid transparent;
}
.nav__lista a:hover { color: var(--navy); border-bottom-color: var(--medio); }
.nav__toggle {
  display: none; background: none; border: 0; cursor: pointer; padding: .4rem;
  color: var(--navy);
}
.nav__toggle svg { width: 28px; height: 28px; }

/* =========================================================================
   Hero
   ========================================================================= */
.hero {
  position: relative; color: #fff;
  background:
    linear-gradient(135deg, rgba(0,51,102,.96) 0%, rgba(26,82,118,.94) 100%),
    radial-gradient(circle at 80% 20%, rgba(46,134,193,.5), transparent 55%);
  background-color: var(--navy);
  overflow: hidden;
}
/* Patrón de apoyo sutil (puntos finos: redes/datos) */
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: radial-gradient(rgba(174,214,241,.18) 1.5px, transparent 1.5px);
  background-size: 26px 26px;
  pointer-events: none;
}
.hero__inner { position: relative; padding: clamp(3.5rem, 9vw, 7rem) 0; max-width: 56ch; }
.hero .eyebrow { color: var(--claro); }
.eyebrow--bloque { display: block; margin-bottom: 1rem; line-height: 1.5; }
.eyebrow__l1 { display: block; font-size: .92rem; letter-spacing: .1em; }
.eyebrow__l2 { display: block; font-weight: 600; opacity: .85; }
.hero h1 { color: #fff; }
.hero__sub { font-size: 1.2rem; color: var(--palido); margin: 1.2rem 0 2rem; max-width: 50ch; }
.hero__acciones { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }
.hero__lema {
  margin-top: 2.5rem; font-style: italic; font-weight: 600; color: var(--claro);
  border-left: 3px solid var(--medio); padding-left: 1rem; font-size: 1.05rem;
}

/* =========================================================================
   Tarjetas (qué hacemos / cómo aliarse)
   ========================================================================= */
.grid { display: grid; gap: 1.4rem; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

.tarjeta {
  background: #fff; border: 1px solid var(--gris-claro); border-radius: var(--radio);
  padding: 1.6rem; box-shadow: var(--sombra); transition: transform var(--transicion), box-shadow var(--transicion);
}
.tarjeta:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,51,102,.12); }
.tarjeta__icono {
  width: 46px; height: 46px; margin-bottom: 1rem; color: var(--medio);
}
.tarjeta__icono svg { width: 100%; height: 100%; stroke: currentColor; fill: none; stroke-width: 1.6; }
.tarjeta h3 { margin-bottom: .5rem; }
.tarjeta p { color: var(--texto-suave); font-size: .98rem; margin: 0; }
.tarjeta--destacada { border-color: var(--medio); border-width: 2px; }
.tarjeta__etiqueta {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: #fff; background: var(--medio);
  padding: .2rem .6rem; border-radius: 999px; margin-bottom: .8rem;
}
.tarjeta__cta { display: inline-block; margin-top: 1rem; font-weight: 700; }

/* =========================================================================
   Respaldo / CEF
   ========================================================================= */
.respaldo__caja {
  background: var(--palido); border-left: 4px solid var(--medio);
  border-radius: var(--radio); padding: 1.4rem 1.6rem; margin: 1.5rem 0;
}
.respaldo__caja strong { color: var(--navy); }
.enlace-cef { display: inline-flex; align-items: center; gap: .4rem; font-weight: 600; margin-top: .5rem; }

/* =========================================================================
   Transparencia (datos legales)
   ========================================================================= */
.datos {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--gris-claro); border: 1px solid var(--gris-claro); border-radius: var(--radio); overflow: hidden;
}
.datos li { background: #fff; padding: 1rem 1.2rem; }
.datos dt, .datos .k { display: block; font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--gris-medio); margin-bottom: .2rem; }
.datos dd, .datos .v { margin: 0; font-weight: 600; color: var(--navy); }
.objeto-social { margin-top: 2rem; }

/* =========================================================================
   Contacto
   ========================================================================= */
.contacto { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2.5rem; align-items: start; }
.formulario { display: grid; gap: 1rem; }
.campo { display: grid; gap: .35rem; }
.campo label { font-weight: 600; font-size: .92rem; color: var(--navy); }
.campo input, .campo textarea, .campo select {
  font-family: var(--fuente); font-size: 1rem; padding: .7rem .85rem;
  border: 1px solid var(--gris-claro); border-radius: 8px; background: #fff; color: var(--texto);
}
.campo input:focus, .campo textarea:focus, .campo select:focus { border-color: var(--medio); }
.contacto__directo { display: grid; gap: .8rem; align-content: start; }
.contacto__item { display: flex; align-items: flex-start; gap: .7rem; }
.contacto__item svg { width: 22px; height: 22px; color: var(--medio); flex: 0 0 auto; margin-top: .2rem; }
.aviso-form { font-size: .85rem; color: var(--gris-medio); }

/* =========================================================================
   Pie de página
   ========================================================================= */
.pie { background: var(--navy); color: var(--palido); padding: 3rem 0 1.5rem; }
.pie a { color: var(--claro); }
.pie a:hover { color: #fff; }
.pie__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
.pie__logo img { height: 60px; margin-bottom: 1rem; }
.pie h4 { color: #fff; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 .8rem; }
.pie ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; font-size: .95rem; }
.pie__legal {
  margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.15);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  font-size: .85rem; color: var(--gris-claro);
}

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 900px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .contacto { grid-template-columns: 1fr; }
  .pie__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav__lista, .nav .btn { display: none; }
  .nav__toggle { display: inline-flex; }
  .nav--abierto .nav__lista {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 64px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--gris-claro); box-shadow: var(--sombra);
    padding: .5rem 1.5rem 1rem;
  }
  .nav--abierto .nav__lista a { padding: .8rem 0; border-bottom: 1px solid var(--gris-claro); }
  .nav--abierto .btn { display: inline-flex; margin: .8rem 1.5rem; }
}
@media (max-width: 560px) {
  .grid--4, .grid--3, .datos { grid-template-columns: 1fr; }
  .pie__grid { grid-template-columns: 1fr; }
  .hero__acciones .btn { width: 100%; justify-content: center; }
}

/* Respeto a quien prefiere menos movimiento */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}