/* ============================================================
   LAYOUT.CSS — Contenedores, Grid y Breakpoints
   ============================================================ */

/* --------------------------------------------------
   CONTENEDORES
   -------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--wide {
  max-width: var(--container-wide);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* --------------------------------------------------
   SECCIONES
   -------------------------------------------------- */

.section {
  padding-block: var(--space-24);
}

.section--sm {
  padding-block: var(--space-16);
}

.section--lg {
  padding-block: var(--space-32);
}

/* Alternancia de fondos */
.section--alt {
  background-color: var(--color-bg-elevated);
}

.section--dark {
  background-color: var(--color-bg-base);
}

/* --------------------------------------------------
   CABECERAS DE SECCIÓN (Section Headers)
   -------------------------------------------------- */

.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}

.section-header--left {
  text-align: left;
  margin-inline: 0;
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
}

.section-title span {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* --------------------------------------------------
   SISTEMAS DE GRID
   -------------------------------------------------- */

/* Grid genérico */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* Grid de servicios 2x2 con protagonistas */
.grid--services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

/* Grid de stack tecnológico: 2 arriba destacados, 2 abajo normales */
.grid--stack-hero {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.grid--stack-secondary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

/* Grid de proceso (timeline) */
.grid--process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  position: relative;
}

/* --------------------------------------------------
   FLEX UTILITIES
   -------------------------------------------------- */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { align-items: center; justify-content: center; }
.flex-between { align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* --------------------------------------------------
   HELPERS DE POSICIÓN
   -------------------------------------------------- */

.relative { position: relative; }
.absolute { position: absolute; }
.overflow-hidden { overflow: hidden; }
.text-center { text-align: center; }
.text-left { text-align: left; }

/* --------------------------------------------------
   RESPONSIVE — BREAKPOINTS
   -------------------------------------------------- */

/* Tablet: ≤ 1024px */
@media (max-width: 1024px) {
  .container {
    padding-inline: var(--space-5);
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--process {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding-block: var(--space-16);
  }

  .section-title {
    font-size: var(--text-3xl);
  }
}

/* Mobile: ≤ 768px */
@media (max-width: 768px) {
  .container {
    padding-inline: var(--space-4);
  }

  .grid--2,
  .grid--3,
  .grid--4,
  .grid--services,
  .grid--stack-hero,
  .grid--stack-secondary,
  .grid--process {
    grid-template-columns: 1fr;
  }

  .section {
    padding-block: var(--space-12);
  }

  .section-header {
    margin-bottom: var(--space-10);
  }

  .section-title {
    font-size: var(--text-3xl);
  }

  .section-subtitle {
    font-size: var(--text-base);
  }
}

/* Mobile pequeño: ≤ 480px */
@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-4);
  }

  .section {
    padding-block: var(--space-10);
  }
}