/* ============================================================
   MEP SYSTEM — responsive.css  (mobile-first media queries)
   ============================================================ */

/* ── Mobile First Base (up to 575px) ───────────────────────── */
.hide-mobile { display: none !important; }
.show-mobile { display: block !important; }

/* ── Small (≥576px) ─────────────────────────────────────────── */
@media (min-width: 576px) {
  .container { padding: 0 24px; }
  .hide-sm { display: none !important; }
  .show-sm { display: block !important; }
}

/* ── Medium (≥768px) ─────────────────────────────────────────── */
@media (min-width: 768px) {
  .hide-mobile { display: revert !important; }
  .show-mobile { display: none !important; }
  .hide-md { display: none !important; }

  .navbar-nav { display: flex; }
  .navbar-toggle { display: none; }

  .mobile-menu { display: none !important; }

  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }

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

  .hero { min-height: 85vh; }
  .hero-content { max-width: 600px; }
}

/* ── Large (≥992px) ──────────────────────────────────────────── */
@media (min-width: 992px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }

  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }

  .hide-lg { display: none !important; }
}

/* ── Extra Large (≥1200px) ───────────────────────────────────── */
@media (min-width: 1200px) {
  .container { max-width: 1200px; }
}

/* ── Mobile Styles (≤767px) ──────────────────────────────────── */
@media (max-width: 767px) {
  :root { --nav-h: 60px; }

  body { font-size: 14px; }
  h1   { font-size: 2.2rem; }
  h2   { font-size: 1.6rem; }

  .container { padding: 0 16px; }
  .section    { padding: 48px 0; }

  .navbar-toggle { display: block; }
  .navbar-nav    { display: none; }
  .navbar-actions .btn-outline { display: none; }

  .mobile-menu {
    position: fixed; top: 60px; left: 0; right: 0;
    background: rgba(13,15,20,0.98); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 16px; z-index: 999;
    transform: translateY(-100%); transition: transform 0.3s ease;
    pointer-events: none;
  }
  .mobile-menu.open { transform: translateY(0); pointer-events: all; }
  .mobile-menu a {
    display: block; padding: 14px 16px;
    color: var(--text-muted); border-radius: var(--radius);
    font-weight: 500; margin-bottom: 4px;
  }
  .mobile-menu a:hover, .mobile-menu a.active {
    background: var(--surface); color: var(--text);
  }
  .mobile-menu-actions { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); display: flex; gap: 10px; }

  .hero { min-height: auto; padding: 60px 0 48px; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }

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

  .form-row { grid-template-columns: 1fr; }

  .table th, .table td { padding: 10px 12px; }

  .modal { width: 95%; }

  .page-banner { padding: 40px 0; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  .cart-sidebar { position: fixed; top: 0; right: 0; bottom: 0; width: 100%; z-index: 3000; transform: translateX(100%); transition: transform 0.3s ease; background: var(--surface); padding: 24px; overflow-y: auto; }
  .cart-sidebar.open { transform: translateX(0); }

  .admin-sidebar { transform: translateX(-100%); }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-sidebar-overlay { display: block; }
}

/* ── Tablet (768–991px) ──────────────────────────────────────── */
@media (min-width: 768px) and (max-width: 991px) {
  .navbar-nav a { padding: 8px 10px; font-size: 0.82rem; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── Print ──────────────────────────────────────────────────── */
@media print {
  .navbar, .footer, .btn, .sidebar, .no-print { display: none !important; }
  body { background: #fff; color: #000; }
  .card { border: 1px solid #ccc; }
}