/* =========================================================================
   LAYOUT — contenedores, rejillas y secciones
   ========================================================================= */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: 1440px; }
.container--narrow { max-width: 820px; }

.section { padding-block: var(--section-y); }
.section--tint { background: var(--mist); }
.section--stone { background: var(--stone); }
.section--sand { background: var(--sand); }
.section--navy { background: var(--navy-800); color: #fff; }
.section--navy h2, .section--navy h3 { color: #fff; }
.section--navy p { color: rgba(255,255,255,0.72); }

.section-head { max-width: 720px; margin-bottom: clamp(2rem, 1rem + 3vw, 3.5rem); }
.section-head h2 { margin-top: 0.7rem; }
.section-head p { margin-top: 1rem; }

/* Rejillas reutilizables */
.grid { display: grid; gap: clamp(1rem, 0.4rem + 1.8vw, 1.75rem); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: center;
}

@media (min-width: 961px) {
  .split--reverse > :first-child { order: 2; }
}
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Utilidades */
.stack > * + * { margin-top: 1rem; }
.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.divider { height: 1px; background: var(--line); border: 0; }