/* ==========================================================================
   YELLOWSTONE SOLAR — RESPONSIVE
   Mobile-first adjustments & breakpoints
   ========================================================================== */

@media (max-width: 1100px) {
  .trust-grid { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .masonry { columns: 2; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .calculator { grid-template-columns: 1fr; padding: 48px; gap: 44px; }
}

@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    inset: 0;
    background: var(--navy);
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    transform: translateX(100%);
    transition: transform .45s cubic-bezier(.2,.8,.2,1);
    z-index: 999;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; align-items: center; gap: 6px; }
  .nav-link { color: var(--white) !important; font-size: 1.25rem; padding: 12px 24px; }
  .site-header.is-scrolled .nav-link:hover { background: rgba(255,255,255,0.12); color: var(--white); }
  .dropdown {
    position: static;
    opacity: 1; visibility: visible; transform: none;
    background: transparent; box-shadow: none;
    display: none;
    text-align: center;
  }
  .has-dropdown.open .dropdown { display: block; }
  .dropdown a { color: rgba(255,255,255,0.7); }
  .dropdown a:hover { background: rgba(255,255,255,0.08); color: var(--white); }
  .nav-toggle { display: flex; z-index: 1001; }
  .header-phone .phone-text { display: none; }

  .grid-2, .feature-row { grid-template-columns: 1fr; gap: 40px; }
  .feature-row.reverse .feature-media { order: 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .process-timeline { grid-template-columns: 1fr 1fr; gap: 44px; }
  .process-timeline::before { display: none; }
  .counter-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 84px 0; }
  .calc-result-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .hero-content { padding-bottom: 130px; }
  .hero-actions .btn { width: 100%; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: 1fr; }
  .masonry { columns: 1; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 14px; text-align: center; }
  .footer-bottom a { margin: 0 10px; }
  .calculator { padding: 34px 24px; border-radius: var(--radius-md); }
  .calc-result-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 60px 28px; }
  .process-timeline { grid-template-columns: 1fr; }
  .section-head { margin-bottom: 40px; }

  /* Sticky action bar — mobile conversions */
  .sticky-bar {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 950;
    background: rgba(16,36,62,0.92);
    backdrop-filter: blur(14px);
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    gap: 12px;
  }
  .sticky-bar .btn { flex: 1; padding: 15px 10px; font-size: 0.9rem; }
  body { padding-bottom: 74px; }
  .site-footer { padding-bottom: 20px; }
}

@media (min-width: 641px) {
  .sticky-bar { display: none !important; }
}

/* Large screens — let the design breathe */
@media (min-width: 1600px) {
  :root { --container: 1360px; }
  h1 { font-size: 5.4rem; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-media { transform: none !important; }
}

/* Print */
@media print {
  .site-header, .sticky-bar, .site-footer, .hero-scroll { display: none; }
}