/* ============================================
   B2B.TSF.RO — Responsive CSS
   Breakpoints: 375 | 768 | 1024 | 1200 | 1440
   Mobile-first approach
   ============================================ */

/* ── Large desktop (1440+) ── */
@media (min-width: 1440px) {
  :root {
    --container-max: 1320px;
  }
}

/* ── Tablet landscape / small desktop (1024-1199) ── */
@media (max-width: 1199px) {
  .qual-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

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

  .sports-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .footer-inner {
    grid-template-columns: 200px 1fr 1fr;
    gap: 40px;
  }
}

/* ── Tablet (768-1023) ── */
@media (max-width: 1023px) {
  /* Header */
  .header-nav { display: none; }
  .header-cta { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }

  /* Hero */
  .hero-scroll { display: none; }

  /* Grids → 2 col */
  .qual-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .diff-grid { grid-template-columns: 1fr 1fr; }
  .equipment-grid { grid-template-columns: 1fr 1fr; }
  .pricing-table { grid-template-columns: 1fr; max-width: 440px; margin-inline: auto; }
  .pricing-tier--featured { transform: none; }
  .sports-grid { grid-template-columns: repeat(4, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .process-steps::before { display: none; }
  .forwho-grid { grid-template-columns: 1fr 1fr; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .pillars-grid { grid-template-columns: 1fr 1fr; }
  .contact-layout { grid-template-columns: 1fr; gap: 48px; }
  .about-story { grid-template-columns: 1fr; gap: 48px; }
  .capabilities-grid { grid-template-columns: 1fr 1fr; }
  .moq-grid { grid-template-columns: 1fr; max-width: 400px; margin-inline: auto; }
  .tech-stack-list { grid-template-columns: 1fr; }
  .about-stats-grid { grid-template-columns: repeat(3, 1fr); }
  .partners-grid { grid-template-columns: repeat(4, 1fr); }

  /* Perception/Reality */
  .perception-reality { grid-template-columns: 1fr; }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .footer-brand { grid-column: 1 / -1; }

  /* Form */
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-card { padding: 36px 28px; }
}

/* ── Mobile (max 767px) ── */
@media (max-width: 767px) {
  /* Prevent horizontal overflow from pushing fixed header off-screen */
  html, body { overflow-x: hidden; }

  /* Typography */
  h1 { font-size: clamp(42px, 12vw, 60px); }
  h2 { font-size: clamp(32px, 8vw, 48px); }
  h3 { font-size: clamp(24px, 6vw, 36px); }

  /* Header — ensure fixed header stays within visual viewport */
  .site-header { max-width: 100vw; overflow: hidden; }
  .header-inner { height: 64px; }
  .header-logo img { height: 32px; }
  body { padding-top: 64px; }

  /* Hero */
  .hero { min-height: calc(100svh - 64px); }
  .hero-content { padding: 48px 0 96px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; justify-content: center; }

  /* Page hero */
  .page-hero { padding: 56px 0 48px; }

  /* Grids → 1 col */
  .qual-grid { grid-template-columns: 1fr; }
  .qual-card { padding: 36px 28px; }

  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item { padding: 28px 16px; }
  .stat-number { font-size: clamp(40px, 10vw, 56px); }

  .diff-grid { grid-template-columns: 1fr; }
  .diff-card { padding: 36px 28px; }

  .equipment-grid { grid-template-columns: 1fr; }
  .sports-grid { grid-template-columns: repeat(3, 1fr); }

  .tech-grid { grid-template-columns: 1fr; }

  .process-steps { grid-template-columns: 1fr; gap: 28px; }

  /* forwho-grid: collapse from any column count (incl. inline style overrides) */
  .forwho-grid { grid-template-columns: 1fr 1fr !important; }

  .product-grid { grid-template-columns: 1fr; }

  .pillars-grid { grid-template-columns: 1fr; }

  .capabilities-grid { grid-template-columns: 1fr; }

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

  .perception-card { padding: 36px 28px; }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  /* About */
  .about-story { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { min-height: 280px; }
  .about-visual-inner .big-number { font-size: 88px; }
  .about-stats-grid { grid-template-columns: 1fr; }

  /* Contact */
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }

  /* Forms */
  .form-card { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-title { font-size: 28px; }

  /* CTA strip */
  .cta-strip { padding: 48px 0; }

  /* MOQ */
  .moq-grid { grid-template-columns: 1fr; }

  /* Mobile menu CTA button: full width (fix #4) */
  .mobile-menu .mobile-cta .btn {
    width: 100%;
    justify-content: center;
    display: flex;
  }

  /* Checkbox touch target: min 44px (fix #5) */
  .checkbox-item { min-height: 44px; }

  /* Mobile menu text bigger on small screens */
  .mobile-menu a { font-size: 36px; }
}

/* ── Small mobile (375px) ── */
@media (max-width: 400px) {
  :root { --container-pad: 16px; }

  .stats-grid { grid-template-columns: 1fr; }
  .forwho-grid { grid-template-columns: 1fr !important; }
  .sports-grid { grid-template-columns: repeat(2, 1fr); }

  /* Last sport card full-width when orfan in 2-col grid (fix #6) */
  .sports-grid .sport-item:last-child:nth-child(odd) { grid-column: 1 / -1; }

  .qual-card { padding: 28px 20px; }
  .diff-card { padding: 28px 20px; }

  .form-card { padding: 24px 16px; }

  .mobile-menu { padding: 90px 24px 40px; }
  .mobile-menu a { font-size: 30px; }
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }

  html { scroll-behavior: auto; }
}

/* ── Print ── */
@media print {
  .site-header,
  .site-footer,
  .hamburger,
  .mobile-menu { display: none !important; }

  body { padding-top: 0; }

  .hero, .page-hero {
    background: white;
    color: black;
    min-height: auto;
    padding: 24px 0;
  }

  .hero h1, .page-hero h1 { color: black; }
  .hero p, .page-hero p { color: #444; }

  .differentiators {
    background: white;
  }

  .differentiators h2,
  .diff-card h4 { color: black; }
  .diff-card p { color: #444; }
}