/* ================================================================
   WHYNEX - Responsive Fixes & Optimization Layer
   Enhances existing CSS without overriding brand identity
   ================================================================ */

/* ── Global overflow prevention ── */
html, body {
  overflow-x: hidden;
  max-width: 100%;
}

/* ── Image optimization ── */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ── intro-img: ensure images fill properly ── */
.intro-img, .sp-intro-img {
  overflow: hidden;
  position: relative;
}
.intro-img img, .sp-intro-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
}

/* ── Reduce motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Font loading stability ── */
body {
  font-display: swap;
}

/* ── Hero section CLS prevention ── */
.hero-right canvas {
  contain: layout;
}

/* ── Navigation mobile enhancements ── */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  .mobile-nav {
    max-height: 100dvh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  /* Prevent mega-menu overflow */
  .mega-wrap {
    max-width: 100vw;
    overflow-x: hidden;
  }
  /* Hero fixes */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-right {
    height: 260px;
    order: -1;
  }
  /* Section padding on mobile */
  .section-pad { padding: 64px 0; }
  .section-pad-sm { padding: 48px 0; }
  /* Intro grid */
  .intro-grid { gap: 32px; }
  .sp-intro-grid { gap: 32px; }
  /* Hero page padding */
  .ind-page-hero { padding: 140px 0 80px; }
  .sp-hero { padding: 140px 0 80px; }
  /* Footer grid */
  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: 24px;
  }
  .footer-locations {
    flex-direction: column;
    gap: 24px;
  }
  /* Typography scale */
  .sh h2 { font-size: clamp(1.5rem, 5vw, 2rem); }
  .cta-headline { font-size: clamp(2.2rem, 8vw, 3.5rem) !important; }
  .final-cta h2 { font-size: clamp(2rem, 7vw, 3rem); }
  /* Button fix */
  .btn { min-width: 0; white-space: normal; }
  .hero-ctas, .cta-btns {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .hero-ctas .btn, .cta-btns .btn {
    justify-content: center;
    text-align: center;
  }
  /* Slider cards */
  .cs-card { flex: 0 0 90%; }
  .testi-card { flex: 0 0 92%; }
  /* Cards grids */
  .why-grid { grid-template-columns: 1fr; }
  .ben-grid { grid-template-columns: 1fr; }
  /* Services process grid */
  .proc-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .proc-grid::before { display: none; }
  /* FAQ */
  .faq-q { font-size: 1rem; padding: 20px 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .hero-h1 { font-size: clamp(1.8rem, 7.5vw, 2.5rem); }
  .sp-hero h1, .ind-page-hero h1 {
    font-size: clamp(1.8rem, 7.5vw, 3rem);
  }
  .proc-grid { grid-template-columns: 1fr; }
  .sol-grid { grid-template-columns: 1fr; }
  .offer-grid { grid-template-columns: 1fr; }
  .chal-grid { grid-template-columns: 1fr; }
  .srv-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
  .process-timeline { grid-template-columns: 1fr; }
  .pf-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  /* Copyright fix */
  .footer-copy { font-size: 13px; }
  /* Breadcrumb wrap */
  .breadcrumb { flex-wrap: wrap; justify-content: center; }
}

/* ── Tablet (768px - 1024px) ── */
@media (min-width: 769px) and (max-width: 1024px) {
  .container { padding: 0 24px; }
  .mega-inner {
    grid-template-columns: repeat(3, 1fr) !important;
  }
  .hero-grid {
    gap: 40px;
  }
  .hero-h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
  .proc-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .proc-grid::before { display: none; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .ind-page-hero { padding: 160px 0 100px; }
  .sp-hero { padding: 160px 0 100px; }
}

/* ── Large screens ── */
@media (min-width: 1920px) {
  .container { max-width: 1600px; }
  html { font-size: 18px; }
}
@media (min-width: 2560px) {
  .container { max-width: 2000px; }
  html { font-size: 20px; }
}

/* ── Sticky header visibility ── */
#header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

/* ── Mega menu viewport constraint ── */
.mega-wrap {
  left: 0 !important;
  right: 0 !important;
  width: 100vw !important;
  box-sizing: border-box;
}

/* ── Back to top accessibility ── */
#back-to-top:focus-visible {
  outline: 2px solid var(--baby-blue);
  outline-offset: 3px;
}

/* ── Form accessibility ── */
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
}

/* ── Skip to main content (accessibility) ── */
.skip-to-main {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--deep-blue);
  color: white;
  padding: 12px 24px;
  z-index: 10000;
  font-weight: 600;
  transition: top 0.2s;
}
.skip-to-main:focus {
  top: 0;
}

/* ── Print optimization ── */
@media print {
  #header, #back-to-top, .hamburger, .mobile-nav, #particles-canvas { display: none !important; }
  body { color: #000; }
}