/* ==========================================================================
   SARATECH.IN — LAYOUT UTILITIES
   Grid, container, responsive primitives
   ========================================================================== */

/* -----------------------------------------------------------------------
   CONTAINER
   ----------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.container--narrow {
  max-width: 680px;
}

.container--wide {
  max-width: 1400px;
}

/* -----------------------------------------------------------------------
   SECTIONS
   ----------------------------------------------------------------------- */

.section {
  padding-top: var(--section-pad-y);
  padding-bottom: var(--section-pad-y);
  position: relative;
}

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

.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.flex-wrap    { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-center   { justify-content: center; }
.justify-between  { justify-content: space-between; }
.gap-1  { gap: var(--space-1); }
.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); }

/* -----------------------------------------------------------------------
   GRID
   ----------------------------------------------------------------------- */

.grid {
  display: grid;
  gap: var(--grid-gap);
}

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

.grid--2col {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid--2col {
    grid-template-columns: 1fr 1fr;
  }
}

/* -----------------------------------------------------------------------
   TEXT ALIGNMENT
   ----------------------------------------------------------------------- */

.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

/* -----------------------------------------------------------------------
   VISIBILITY
   ----------------------------------------------------------------------- */

.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;
}

/* Mobile-first visibility */
.hide-mobile {
  display: none;
}

@media (min-width: 768px) {
  .hide-mobile {
    display: initial;
  }
  .hide-desktop {
    display: none;
  }
}

/* -----------------------------------------------------------------------
   REVEAL ANIMATIONS (driven by IntersectionObserver)
   ----------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity var(--duration-reveal) var(--ease-out-expo),
    transform var(--duration-reveal) var(--ease-out-expo);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid children */
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

/* Reduced motion override */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 0;
    transform: none;
    transition: opacity var(--duration-normal) ease;
  }

  .reveal.is-visible {
    opacity: 1;
  }
}