/* ============================================================
   GRAVINI México — Sistema de diseño
   Colores extraídos del sitio original
   ============================================================ */

/* — Variables ------------------------------------------------ */
:root {
  --azul-oscuro:   #1a3a5c;
  --azul-medio:    #1e5fa8;
  --azul-claro:    #e8f0fa;
  --dorado:        #e8a020;
  --dorado-claro:  #f5c842;
  --footer-bg:     #1e2d3d;
  --footer-text:   #b0bec5;
  --blanco:        #ffffff;
  --gris-bg:       #f7f8fa;
  --gris-texto:    #4a5568;
  --gris-claro:    #e2e8f0;
  --texto:         #1a202c;

  --radio:         8px;
  --radio-lg:      12px;
  --sombra:        0 2px 12px rgba(0,0,0,.08);
  --sombra-md:     0 4px 20px rgba(0,0,0,.12);

  --fuente:        'Inter', 'Segoe UI', system-ui, sans-serif;
  --transicion:    .2s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--fuente);
  color: var(--texto);
  background: var(--blanco);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* — Tipografía ----------------------------------------------- */
h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.2; color: var(--texto); }
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.3rem); }
h4 { font-size: 1rem; }

p { margin-bottom: .75rem; }
p:last-child { margin-bottom: 0; }

/* — Layout --------------------------------------------------- */
.contenedor {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.seccion { padding: 4.5rem 0; }
.seccion-gris { background: var(--gris-bg); }
.seccion-oscura { background: var(--footer-bg); color: var(--blanco); }
.seccion-oscura h2, .seccion-oscura h3 { color: var(--blanco); }

.seccion-titulo {
  text-align: center;
  margin-bottom: 2.5rem;
}
.seccion-titulo h2 { color: var(--azul-oscuro); margin-bottom: .5rem; }
.seccion-titulo p  { color: var(--gris-texto); max-width: 620px; margin: 0 auto; }

/* — Navbar --------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--blanco);
  box-shadow: 0 1px 8px rgba(0,0,0,.08);
  height: 64px;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar-logo img { height: 40px; width: auto; }

.navbar-nav {
  display: flex;
  align-items: center;
  gap: .25rem;
}

.navbar-nav a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--gris-texto);
  padding: .4rem .7rem;
  border-radius: var(--radio);
  transition: color var(--transicion), background var(--transicion);
}

.navbar-nav a:hover,
.navbar-nav a.activo {
  color: var(--azul-medio);
  background: var(--azul-claro);
}

/* Dropdown Quiénes somos */
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--blanco);
  border: 1px solid var(--gris-claro);
  border-radius: var(--radio);
  box-shadow: var(--sombra-md);
  min-width: 180px;
  padding: .4rem 0;
  z-index: 200;
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
  display: block;
  padding: .55rem 1rem;
  border-radius: 0;
  font-size: .875rem;
}

.navbar-cta {
  background: var(--azul-oscuro);
  color: var(--blanco) !important;
  padding: .45rem 1rem !important;
  border-radius: var(--radio) !important;
  font-size: .875rem !important;
  transition: background var(--transicion) !important;
}
.navbar-cta:hover { background: var(--azul-medio) !important; color: var(--blanco) !important; }

/* Hamburger mobile */
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: .4rem;
  color: var(--azul-oscuro);
}
.navbar-toggle svg { width: 24px; height: 24px; }

/* — Hero ----------------------------------------------------- */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--blanco);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: var(--azul-oscuro);
}

/* Overlay azul→dorado igual al sitio original */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(26,58,92,.88) 0%,
    rgba(26,58,92,.72) 50%,
    rgba(232,160,32,.70) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  padding: 3rem 0;
}
.hero-content h1 { color: var(--blanco); font-size: clamp(2rem,5vw,3.2rem); margin-bottom: 1rem; }
.hero-content p  { font-size: 1.1rem; opacity: .92; margin-bottom: 1.5rem; }

/* Hero pequeño (páginas internas) */
.hero-sm {
  min-height: 200px;
  display: flex;
  align-items: flex-end;
  padding-bottom: 2rem;
}
.hero-sm .hero-content h1 { font-size: clamp(1.6rem,4vw,2.4rem); }

/* — Botones -------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .9rem;
  font-weight: 600;
  padding: .65rem 1.4rem;
  border-radius: var(--radio);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transicion);
  text-decoration: none;
  line-height: 1;
}
.btn-primario {
  background: var(--azul-oscuro);
  color: var(--blanco);
  border-color: var(--azul-oscuro);
}
.btn-primario:hover { background: var(--azul-medio); border-color: var(--azul-medio); }

.btn-secundario {
  background: transparent;
  color: var(--blanco);
  border-color: var(--blanco);
}
.btn-secundario:hover { background: rgba(255,255,255,.12); }

.btn-dorado {
  background: var(--dorado);
  color: var(--blanco);
  border-color: var(--dorado);
}
.btn-dorado:hover { background: #c8891a; border-color: #c8891a; }

.btn-outline {
  background: transparent;
  color: var(--azul-medio);
  border-color: var(--azul-medio);
}
.btn-outline:hover { background: var(--azul-claro); }

.btn-sm { padding: .45rem 1rem; font-size: .82rem; }
.btn-lg { padding: .85rem 1.8rem; font-size: 1rem; }

/* — Cards ---------------------------------------------------- */
.card {
  background: var(--blanco);
  border-radius: var(--radio-lg);
  box-shadow: var(--sombra);
  overflow: hidden;
  transition: box-shadow var(--transicion), transform var(--transicion);
}
.card:hover { box-shadow: var(--sombra-md); transform: translateY(-2px); }

.card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }

.card-body { padding: 1.25rem; }
.card-categoria {
  display: inline-block;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--blanco);
  background: var(--azul-medio);
  padding: .2rem .6rem;
  border-radius: 4px;
  margin-bottom: .6rem;
}
.card-titulo { font-size: 1rem; font-weight: 700; color: var(--azul-oscuro); margin-bottom: .4rem; line-height: 1.35; }
.card-fecha  { font-size: .8rem; color: var(--gris-texto); }
.card-texto  { font-size: .9rem; color: var(--gris-texto); margin-top: .5rem; }

/* — Grid de cards -------------------------------------------- */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* — Sección impacto (contadores) ----------------------------- */
.impacto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2rem;
  text-align: center;
}
.impacto-item {}
.impacto-numero {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--dorado);
  line-height: 1;
  margin-bottom: .3rem;
}
.impacto-etiqueta {
  font-size: .9rem;
  color: var(--footer-text);
  line-height: 1.3;
}

/* — Iconos de participación ---------------------------------- */
.participacion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1.5rem;
  text-align: center;
}
.participacion-item { padding: 1.5rem 1rem; }
.participacion-icono {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
}
.participacion-item h3 { font-size: .95rem; color: var(--azul-oscuro); }

/* — Formularios ---------------------------------------------- */
.form-grupo { margin-bottom: 1rem; }
.form-label { display: block; font-size: .875rem; font-weight: 600; margin-bottom: .35rem; color: var(--texto); }
.form-control {
  width: 100%;
  padding: .65rem .9rem;
  border: 1.5px solid var(--gris-claro);
  border-radius: var(--radio);
  font-size: .9rem;
  font-family: var(--fuente);
  color: var(--texto);
  background: var(--blanco);
  transition: border-color var(--transicion);
  outline: none;
}
.form-control:focus { border-color: var(--azul-medio); box-shadow: 0 0 0 3px rgba(30,95,168,.12); }
.form-control::placeholder { color: #a0aec0; }
textarea.form-control { resize: vertical; min-height: 120px; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234a5568' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .9rem center; padding-right: 2.5rem; }

.form-check { display: flex; align-items: flex-start; gap: .6rem; }
.form-check input[type=checkbox] { margin-top: .2rem; accent-color: var(--azul-medio); }
.form-check label { font-size: .875rem; color: var(--gris-texto); }

.form-fila { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-error { font-size: .8rem; color: #e53e3e; margin-top: .3rem; }

/* — Acordeón ------------------------------------------------- */
.acordeon { border: 1.5px solid var(--gris-claro); border-radius: var(--radio); overflow: hidden; }
.acordeon-item + .acordeon-item { border-top: 1.5px solid var(--gris-claro); }

.acordeon-btn {
  width: 100%;
  text-align: left;
  background: var(--blanco);
  border: none;
  padding: 1rem 1.25rem;
  font-size: .95rem;
  font-weight: 600;
  color: var(--texto);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .5rem;
  transition: background var(--transicion);
}
.acordeon-btn:hover  { background: var(--gris-bg); }
.acordeon-btn.activo { background: var(--azul-oscuro); color: var(--blanco); }
.acordeon-btn .icono-chevron { transition: transform var(--transicion); flex-shrink: 0; }
.acordeon-btn.activo .icono-chevron { transform: rotate(180deg); }

.acordeon-cuerpo {
  display: none;
  padding: 1rem 1.25rem;
  font-size: .9rem;
  color: var(--gris-texto);
  line-height: 1.7;
  border-top: 1.5px solid var(--gris-claro);
}
.acordeon-cuerpo.abierto { display: block; }
.acordeon-cuerpo ul { padding-left: 1.2rem; list-style: disc; }
.acordeon-cuerpo li { margin-bottom: .35rem; }
.acordeon-cuerpo ol { padding-left: 1.2rem; list-style: decimal; }

/* — Badges y etiquetas --------------------------------------- */
.badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: .25rem .65rem;
  border-radius: 20px;
  text-transform: uppercase;
}
.badge-azul   { background: var(--azul-claro); color: var(--azul-oscuro); }
.badge-dorado { background: #fef3cd; color: #7d5a00; }
.badge-verde  { background: #e6f4ea; color: #276749; }
.badge-rojo   { background: #fee2e2; color: #9b1c1c; }
.badge-gris   { background: var(--gris-claro); color: var(--gris-texto); }

/* — Tabla de datos ------------------------------------------- */
.tabla { width: 100%; border-collapse: collapse; font-size: .9rem; }
.tabla th { font-weight: 600; color: var(--azul-oscuro); padding: .75rem 1rem; border-bottom: 2px solid var(--gris-claro); text-align: left; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.tabla td { padding: .75rem 1rem; border-bottom: 1px solid var(--gris-claro); vertical-align: middle; color: var(--gris-texto); }
.tabla tr:last-child td { border-bottom: none; }
.tabla tr:hover td { background: var(--gris-bg); }
.tabla-wrapper { overflow-x: auto; border-radius: var(--radio-lg); box-shadow: var(--sombra); background: var(--blanco); }

/* — Aliados -------------------------------------------------- */
.aliados-grid {
  display: flex;
  gap: 3rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.aliado-item { text-align: center; }
.aliado-item img { height: 60px; width: auto; margin: 0 auto .75rem; }
.aliado-item h4 { font-size: .85rem; color: var(--azul-oscuro); }
.aliado-item p  { font-size: .78rem; color: var(--gris-texto); }

/* — Organigrama ---------------------------------------------- */
.org-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.25rem;
}
.org-card {
  text-align: center;
  background: var(--blanco);
  border: 1.5px solid var(--gris-claro);
  border-radius: var(--radio-lg);
  padding: 1.5rem 1rem;
  transition: box-shadow var(--transicion);
}
.org-card:hover { box-shadow: var(--sombra); }
.org-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto .75rem;
  border: 3px solid var(--azul-claro);
}
.org-nombre { font-weight: 700; font-size: .95rem; color: var(--azul-oscuro); margin-bottom: .2rem; }
.org-cargo  { font-size: .8rem; color: var(--gris-texto); margin-bottom: .25rem; }
.org-gen    { font-size: .75rem; color: var(--azul-medio); font-weight: 500; }

/* — Valores -------------------------------------------------- */
.valores-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.5rem;
  text-align: center;
}
.valor-item {}
.valor-icono { width: 56px; height: 56px; margin: 0 auto .75rem; }
.valor-nombre { font-weight: 700; color: var(--azul-medio); margin-bottom: .3rem; }
.valor-desc   { font-size: .85rem; color: var(--gris-texto); }

/* — Empresarios ---------------------------------------------- */
.empresa-card {
  background: var(--blanco);
  border-radius: var(--radio-lg);
  box-shadow: var(--sombra);
  overflow: hidden;
}
.empresa-fotos { position: relative; }
.empresa-foto-principal { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.empresa-categoria-badge {
  position: absolute;
  top: .75rem;
  left: .75rem;
}
.empresa-body { padding: 1.1rem; }
.empresa-nombre { font-weight: 700; color: var(--azul-oscuro); font-size: 1rem; margin-bottom: .3rem; }
.empresa-desc   { font-size: .85rem; color: var(--gris-texto); margin-bottom: .75rem; }
.empresa-contacto { font-size: .82rem; color: var(--gris-texto); display: flex; flex-direction: column; gap: .3rem; }
.empresa-contacto a { color: var(--azul-medio); }
.empresa-contacto a:hover { text-decoration: underline; }

/* — Resultados (gráficas) ------------------------------------ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.stat-card {
  background: var(--blanco);
  border-radius: var(--radio-lg);
  box-shadow: var(--sombra);
  padding: 1.5rem;
}
.stat-card h3 { font-size: 1rem; color: var(--azul-oscuro); margin-bottom: 1rem; }

/* — Membresía ------------------------------------------------ */
.membresia-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.membresia-card {
  border-radius: var(--radio-lg);
  padding: 2rem;
  border: 2px solid var(--gris-claro);
  text-align: center;
}
.membresia-card.destacado { border-color: var(--azul-medio); background: var(--azul-claro); }
.membresia-nombre { font-size: 1.2rem; font-weight: 700; color: var(--azul-oscuro); margin-bottom: .5rem; }
.membresia-precio { font-size: 2rem; font-weight: 700; color: var(--dorado); margin-bottom: 1rem; }
.membresia-precio span { font-size: .9rem; color: var(--gris-texto); font-weight: 400; }
.membresia-beneficios { text-align: left; margin-bottom: 1.5rem; }
.membresia-beneficios li { padding: .4rem 0; font-size: .9rem; color: var(--gris-texto); display: flex; gap: .5rem; }
.membresia-beneficios li::before { content: '✓'; color: var(--azul-medio); font-weight: 700; flex-shrink: 0; }

/* — Footer --------------------------------------------------- */
.footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 3.5rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.footer-logo { height: 50px; margin-bottom: 1rem; }
.footer-desc { font-size: .85rem; line-height: 1.7; }
.footer-col h5 {
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--blanco);
  margin-bottom: 1rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: .5rem; }
.footer-col a { font-size: .85rem; color: var(--footer-text); transition: color var(--transicion); }
.footer-col a:hover { color: var(--dorado); }
.footer-col address { font-style: normal; font-size: .85rem; line-height: 1.7; }
.footer-col strong { color: var(--blanco); display: block; margin-top: .75rem; margin-bottom: .15rem; font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; }

.redes-sociales { display: flex; gap: .75rem; margin-top: .5rem; }
.red-social {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--footer-text);
  transition: background var(--transicion), color var(--transicion);
}
.red-social:hover { background: var(--dorado); color: var(--blanco); }
.red-social svg { width: 18px; height: 18px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: .75rem;
  font-size: .78rem;
  color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.4); }
.footer-bottom a:hover { color: var(--dorado); }

/* — Paginación ----------------------------------------------- */
.paginacion { display: flex; gap: .4rem; justify-content: center; margin-top: 2.5rem; flex-wrap: wrap; }
.paginacion a, .paginacion span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 .6rem;
  border-radius: var(--radio);
  font-size: .875rem;
  font-weight: 500;
  border: 1.5px solid var(--gris-claro);
  color: var(--gris-texto);
  transition: all var(--transicion);
}
.paginacion a:hover { border-color: var(--azul-medio); color: var(--azul-medio); }
.paginacion .actual { background: var(--azul-oscuro); color: var(--blanco); border-color: var(--azul-oscuro); }

/* — Panel admin ---------------------------------------------- */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 240px;
  background: var(--azul-oscuro);
  color: var(--blanco);
  padding: 1.5rem 0;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.admin-sidebar-logo { padding: 0 1.25rem 1.5rem; border-bottom: 1px solid rgba(255,255,255,.1); margin-bottom: 1rem; }
.admin-sidebar-logo img { height: 32px; }
.admin-nav a {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .65rem 1.25rem;
  font-size: .875rem;
  color: rgba(255,255,255,.75);
  transition: all var(--transicion);
}
.admin-nav a:hover, .admin-nav a.activo {
  background: rgba(255,255,255,.1);
  color: var(--blanco);
}
.admin-nav a svg { width: 18px; height: 18px; flex-shrink: 0; }
.admin-nav .grupo-label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: rgba(255,255,255,.35);
  padding: 1.2rem 1.25rem .4rem;
}

.admin-main { flex: 1; background: var(--gris-bg); overflow-x: auto; }
.admin-topbar {
  background: var(--blanco);
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--gris-claro);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.admin-topbar h1 { font-size: 1.25rem; color: var(--azul-oscuro); }
.admin-content { padding: 1.75rem 1.5rem; }

.admin-card {
  background: var(--blanco);
  border-radius: var(--radio-lg);
  box-shadow: var(--sombra);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.stat-mini-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-mini {
  background: var(--blanco);
  border-radius: var(--radio-lg);
  box-shadow: var(--sombra);
  padding: 1.25rem;
}
.stat-mini-valor { font-size: 1.8rem; font-weight: 700; color: var(--azul-oscuro); }
.stat-mini-label { font-size: .8rem; color: var(--gris-texto); margin-top: .2rem; }

/* — Flash messages ------------------------------------------- */
.flash {
  padding: .85rem 1.25rem;
  border-radius: var(--radio);
  margin-bottom: 1rem;
  font-size: .9rem;
  font-weight: 500;
}
.flash-ok     { background: #e6f4ea; color: #276749; border-left: 3px solid #38a169; }
.flash-error  { background: #fee2e2; color: #9b1c1c; border-left: 3px solid #e53e3e; }
.flash-info   { background: var(--azul-claro); color: var(--azul-oscuro); border-left: 3px solid var(--azul-medio); }

/* — Utilidades ----------------------------------------------- */
.text-center { text-align: center; }
.text-azul   { color: var(--azul-medio); }
.text-dorado { color: var(--dorado); }
.text-gris   { color: var(--gris-texto); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.d-flex { display: flex; }
.gap-1  { gap: .5rem; }
.gap-2  { gap: 1rem; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-100  { width: 100%; }

/* — Responsive ----------------------------------------------- */
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .membresia-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .seccion { padding: 3rem 0; }
  .navbar-nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--blanco); box-shadow: var(--sombra-md); padding: .75rem 0; }
  .navbar-nav.abierto { display: flex; }
  .navbar-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .form-fila  { grid-template-columns: 1fr; }
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; height: auto; position: relative; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* — Accesibilidad -------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

:focus-visible {
  outline: 2.5px solid var(--azul-medio);
  outline-offset: 2px;
}