/* ==========================================================================
   MStall Electric Inc. — Responsive overrides
   Base (mobile, < 640px) lives in styles.css. Breakpoints:
     Tablet        640px  (40em)
     Desktop       1024px (64em)
     Desktop nav   1200px (75em)  — full nav + logo + CTA need this width
     Large desktop 1440px (90em)
   ========================================================================== */

/* ---------- Tablet: 640px+ ---------- */
@media (min-width: 40em) {
  :root {
    --gutter: var(--space-xl);
    --header-h: 80px;
  }

  .brand-mark {
    width: 52px;
  }

  .brand-wordmark {
    width: 260px;
  }

  .card-grid,
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid {
    gap: 44px 40px;
  }

  .market-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-2xl);
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: 600px;
  }

  .hero::before {
    background: linear-gradient(90deg, rgb(var(--overlay-rgb) / .92) 0%, rgb(var(--overlay-rgb) / .84) 50%, rgb(var(--overlay-rgb) / .58) 80%, rgb(var(--overlay-rgb) / .42) 100%);
  }

  .expertise-content {
    padding: 72px var(--gutter);
  }

  /* Interior pages: capability + project-type lists side by side under the stacked photo */
  .service-detail-lists {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2xl);
  }

  /* About: execution stages and company details in two columns */
  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2xl) var(--space-xl);
  }

  .company-details {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-2xl);
  }

  /* Contact: short fields in two columns */
  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-field--full {
    grid-column: 1 / -1;
  }

  .inquiry-submit {
    width: auto;
  }

  /* Projects (temporary under-construction page): buttons side by side */
  .puc-actions {
    flex-direction: row;
    justify-content: center;
  }
}

/* ---------- Desktop: 1024px+ ---------- */
@media (min-width: 64em) {
  :root {
    --gutter: 48px;
  }

  .hero {
    min-height: clamp(650px, 76vh, 820px);
  }

  .hero::before {
    background: linear-gradient(90deg, rgb(var(--overlay-rgb) / .94) 0%, rgb(var(--overlay-rgb) / .87) 40%, rgb(var(--overlay-rgb) / .58) 62%, rgb(var(--overlay-rgb) / .18) 85%, rgb(var(--overlay-rgb) / .10) 100%);
  }

  /* Headline prefers two lines: "Electrical Construction / Built for Complex Projects" */
  .hero-content h1 {
    max-width: none;
    font-size: min(var(--font-size-h1), 5rem); /* keeps line two clear of the worker on wide screens */
  }

  .hero-title-line {
    display: block;
  }

  /* Who we are: heading left, copy right, vertical divider */
  .intro-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 72px;
    align-items: start;
  }

  .intro-body {
    padding-left: var(--space-3xl);
    border-left: 1px solid var(--color-border);
  }

  /* Services: 3 columns, 2 rows */
  .service-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }

  /* Featured expertise: two large side-by-side panels */
  .expertise {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px;
  }

  .expertise {
    --expertise-h: 680px;
  }

  .expertise-content {
    padding: 80px var(--space-3xl);
  }

  /* Projects: 3 across, header with link on the right */
  .project-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-xl);
  }

  .section-header-split {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-2xl);
  }

  /* Why MStall: 4 columns with subtle dividers */
  .feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .feature {
    padding-inline: var(--space-xl);
    border-left: 1px solid var(--color-divider);
  }

  .feature:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .feature:last-child {
    padding-right: 0;
  }

  /* Markets: 3 columns */
  .market-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  /* Service area: text left, map right */
  .area-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 72px;
  }

  .area-map {
    width: min(100%, 380px);
  }

  /* CTA: text left, buttons right */
  .cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: var(--space-3xl);
  }

  .footer-grid {
    grid-template-columns: 1.3fr 1fr 1.4fr 1.2fr;
    gap: 48px;
  }

  /* Interior hero */
  .hero.page-hero {
    min-height: clamp(520px, 62vh, 640px);
  }

  /* Service detail: photo and text side by side, alternating sides */
  .service-detail-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: var(--space-4xl);
    align-items: start;
  }

  .service-detail-reverse .service-detail-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }

  .service-detail-reverse .service-detail-media {
    order: 2;
  }

  /* Photo stays in view alongside the longer capability lists */
  .service-detail-media {
    position: sticky;
    top: calc(var(--header-h) + var(--space-xl));
  }

  .service-detail-lists {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-xl);
  }

  /* About: four execution stages in a row */
  .process-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  /* Contact: details left, form right; details stack in the narrower column */
  .contact-grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: var(--space-4xl);
  }

  .contact-info .company-details {
    grid-template-columns: minmax(0, 1fr);
  }

  /* About: company intro left, details right */
  .company-grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: 72px;
    align-items: start;
  }
}

/* ---------- Desktop navigation: 1200px+ ---------- */
@media (min-width: 75em) {
  :root {
    --header-h: 88px;
  }

  /* Max size that keeps brand + full nav + CTA on one row at 1200px */
  .brand-mark {
    width: 54px;
  }

  .brand-wordmark {
    width: 276px;
  }

  /* Wider hero text measure once the photo subject sits clear of it */
  .hero-content > * {
    max-width: 900px;
  }

  /* Who we are: wider heading column so the headline wraps into fewer lines */
  .intro-grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    gap: var(--space-2xl);
  }

  .intro-body {
    padding-left: var(--space-2xl);
  }

  /* Service detail: text column is wide enough for the two lists side by side again */
  .service-detail-lists {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2xl);
  }

  .js .nav-toggle {
    display: none;
  }

  .primary-nav,
  .js .primary-nav,
  html:not(.js) .primary-nav {
    position: static;
    display: flex;
    align-items: center;
    gap: 28px;
    width: auto;
    max-height: none;
    overflow: visible;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
  }

  .nav-list {
    display: flex;
    gap: 4px;
  }

  .nav-list a {
    position: relative;
    min-height: 44px;
    padding-inline: 12px;
    border-bottom: 0;
    font-size: .9875rem;
  }

  .nav-list a[aria-current="page"]::after {
    content: "";
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 4px;
    height: 2px;
    background: var(--color-primary);
  }

  .nav-cta {
    width: auto;
    min-height: 48px;
    margin-top: 0;
    padding-inline: 22px;
  }
}

/* ---------- Large desktop: 1440px+ ---------- */
@media (min-width: 90em) {
  :root {
    --gutter: 64px;
  }

  .brand-mark {
    width: 62px;
  }

  .brand-wordmark {
    width: 320px;
  }

  /* Taller panels give large project photos more room on wide screens */
  .expertise {
    --expertise-h: clamp(680px, 46vw, 880px);
  }

  .expertise-content {
    padding: 96px 72px;
  }
}