/* ============================================================
   THM — Layout
   Grid system, contenedores y breakpoints.
   Breakpoints: mobile <640px | tablet 640-1024px | desktop >1024px | wide >1440px
   ============================================================ */

/* ----------------------------------------------------------
   CONTENEDOR PRINCIPAL
   ---------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

.container--narrow {
  max-width: 768px;
}

@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-4);
  }
}

/* ----------------------------------------------------------
   GRID SYSTEM
   ---------------------------------------------------------- */
.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); }

/* Auto-fit grids (responsive sin media queries) */
.grid-auto-sm {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid-auto-md {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-auto-lg {
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
}

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
}

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

/* ----------------------------------------------------------
   POSICIONAMIENTO
   ---------------------------------------------------------- */
.relative { position: relative; }
.absolute { position: absolute; }
.sticky   { position: sticky; }
.overflow-hidden { overflow: hidden; }

/* ----------------------------------------------------------
   MAIN LAYOUT WRAPPER
   ---------------------------------------------------------- */
main {
  /* Espacio para la navbar fija */
  padding-top: var(--navbar-height);
}

/* ----------------------------------------------------------
   HERO LAYOUT (dos columnas en desktop)
   ---------------------------------------------------------- */
.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  min-height: calc(100vh - var(--navbar-height));
}

@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
    text-align: center;
    min-height: auto;
    padding: var(--space-16) 0;
  }
}

/* ----------------------------------------------------------
   CARD BASE
   ---------------------------------------------------------- */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--glow-accent);
}

/* Línea de acento superior en hover */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent-grad);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover::before {
  opacity: 1;
}

/* ----------------------------------------------------------
   VISIBILIDAD RESPONSIVE
   ---------------------------------------------------------- */
.hide-mobile  { display: block; }
.show-mobile  { display: none; }

@media (max-width: 640px) {
  .hide-mobile { display: none; }
  .show-mobile { display: block; }
}

.hide-tablet { display: block; }
@media (max-width: 1024px) {
  .hide-tablet { display: none; }
}