/* ============================================================
   PURE POWER CONTRACTORS — Layout
   css/layout.css

   Containers, sections, grid utilities, and responsive
   breakpoints. Mobile-first — base styles are mobile,
   min-width queries scale up.

   Breakpoints:
     48rem  (768px)  — Tablet
     64rem  (1024px) — Desktop
     90rem  (1440px) — Wide
   ============================================================ */


/* ==========================================================
   1. CONTAINER
   Centers content with a max-width and horizontal padding.
   ========================================================== */

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

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

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


/* ==========================================================
   2. SECTIONS
   Full-width blocks that stack vertically to form pages.
   Padding increases at larger viewports.
   ========================================================== */

.section {
  width: 100%;
  padding-top: var(--space-12);     /* 48px mobile */
  padding-bottom: var(--space-12);
}

@media (min-width: 48rem) {
  .section {
    padding-top: var(--space-16);   /* 64px tablet */
    padding-bottom: var(--space-16);
  }
}

@media (min-width: 64rem) {
  .section {
    padding-top: var(--space-20);   /* 80px desktop */
    padding-bottom: var(--space-20);
  }
}

/* --- Section Variants ------------------------------------- */

/* Compact — less vertical breathing room */
.section--sm {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

@media (min-width: 64rem) {
  .section--sm {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }
}

/* Large — hero-level spacing */
.section--lg {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
}

@media (min-width: 64rem) {
  .section--lg {
    padding-top: var(--space-30);
    padding-bottom: var(--space-30);
  }
}

/* No top/bottom padding overrides */
.section--no-pt { padding-top: 0; }
.section--no-pb { padding-bottom: 0; }

/* --- Section Backgrounds ---------------------------------- */

.section--dark {
  background-color: var(--color-surface-dark);
  color: var(--color-text-on-dark);
}

.section--darker {
  background-color: var(--color-surface-darker);
  color: var(--color-text-on-dark);
}

.section--light {
  background-color: var(--color-surface-light);
}

.section--ghost {
  background-color: var(--color-surface-ghost);
}


/* ==========================================================
   3. PAGE HERO
   Full-viewport or large header areas with centered content.
   ========================================================== */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding-top: var(--space-30);
  padding-bottom: var(--space-20);
  overflow: hidden;
}

@media (min-width: 64rem) {
  .hero {
    min-height: 80vh;
  }
}

/* Full-viewport hero (homepage) */
.hero--full {
  min-height: 100vh;
}

/* Overlay for text readability over images/video */
.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--color-overlay-dark);
  z-index: var(--z-base);
}

/* Brand-tinted overlay */
.hero__overlay--brand {
  background: var(--color-overlay-brand);
}

/* Hero content sits above overlay */
.hero__content {
  position: relative;
  z-index: var(--z-raised);
}


/* ==========================================================
   4. GRID
   CSS Grid utility for multi-column layouts.
   Single column on mobile, scales up at breakpoints.
   ========================================================== */

.grid {
  display: grid;
  gap: var(--space-6);
}

/* --- Column Variants -------------------------------------- */

/* 2-column at tablet */
.grid--2 {
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 3-column at tablet (2-col), desktop (3-col) */
.grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 64rem) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 4-column at tablet (2-col), desktop (4-col) */
.grid--4 {
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 64rem) {
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --- Gap Variants ----------------------------------------- */

.grid--gap-sm  { gap: var(--space-4); }   /* 16px */
.grid--gap-lg  { gap: var(--space-10); }  /* 40px */


/* ==========================================================
   5. FLEX UTILITIES
   Common flexbox patterns used across the site.
   ========================================================== */

.flex {
  display: flex;
}

.flex--col {
  flex-direction: column;
}

.flex--wrap {
  flex-wrap: wrap;
}

.flex--center {
  align-items: center;
  justify-content: center;
}

.flex--between {
  align-items: center;
  justify-content: space-between;
}

.flex--gap-sm  { gap: var(--space-2); }
.flex--gap     { gap: var(--space-4); }
.flex--gap-md  { gap: var(--space-6); }
.flex--gap-lg  { gap: var(--space-10); }


/* ==========================================================
   6. SPLIT LAYOUT
   Two-column content/media layout. Stacks on mobile,
   side-by-side on desktop.
   ========================================================== */

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 64rem) {
  .split {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

/* Wider content column (60/40 split) */
@media (min-width: 64rem) {
  .split--content-wide {
    grid-template-columns: 3fr 2fr;
  }
}

/* Wider media column (40/60 split) */
@media (min-width: 64rem) {
  .split--media-wide {
    grid-template-columns: 2fr 3fr;
  }
}

/* Reverse order — media first on desktop */
@media (min-width: 64rem) {
  .split--reverse {
    direction: ltr;
  }

  .split--reverse > :first-child {
    order: 2;
  }

  .split--reverse > :last-child {
    order: 1;
  }
}


/* ==========================================================
   7. STATS BAR
   Horizontal row of key metrics (MW, projects, employees).
   ========================================================== */

.stats-bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  text-align: center;
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

@media (min-width: 48rem) {
  .stats-bar {
    grid-template-columns: repeat(3, 1fr);
  }
}


/* ==========================================================
   8. SPACING UTILITIES
   Vertical spacing between stacked elements within sections.
   ========================================================== */

.stack > * + * {
  margin-top: var(--space-4);
}

.stack--sm > * + * {
  margin-top: var(--space-2);
}

.stack--md > * + * {
  margin-top: var(--space-6);
}

.stack--lg > * + * {
  margin-top: var(--space-8);
}

.stack--xl > * + * {
  margin-top: var(--space-12);
}


/* ==========================================================
   9. TEXT ALIGNMENT
   ========================================================== */

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


/* ==========================================================
   10. RESPONSIVE VISIBILITY
   ========================================================== */

/* Hide on mobile, show at tablet+ */
.show-tablet {
  display: none;
}

@media (min-width: 48rem) {
  .show-tablet {
    display: block;
  }
}

/* Show on mobile only */
@media (min-width: 48rem) {
  .hide-tablet {
    display: none;
  }
}