/**
 * Amanat Enterprise - Responsive Layouts (Mobile, Tablet, Desktop, 4K)
 */

/* ================= LARGE SCREENS (1200px - 1440px) ================= */
@media (max-width: 1280px) {
  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .partners-grid.is-collapsed .partner-card:nth-child(n + 7) {
    display: none;
  }
}

/* ================= TABLET LANDSCAPE & DESKTOP SMALL (992px - 1199px) ================= */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-visual {
    max-width: 42rem;
    width: calc(100% - 1.2rem);
    margin-inline: auto;
  }
  
  .hero-section {
    padding-top: 8.5rem;
  }

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

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

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

  .hero-stats-wrapper {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

}

/* ================= TABLET PORTRAIT & MOBILE (768px - 991px) ================= */
@media (max-width: 1100px) {
  .desktop-nav {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

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

  .partners-grid.is-collapsed .partner-card:nth-child(n + 5) {
    display: none;
  }

}

/* ================= MOBILE DRAWER NAVIGATION ================= */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 82%;
  max-width: 330px;
  height: 100vh;
  height: 100dvh;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  z-index: 2500;
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-cyan) rgba(255, 255, 255, 0.08);
  transition: right var(--transition-normal);
  box-shadow: var(--shadow-lg);
}

.mobile-nav-drawer::-webkit-scrollbar { width: 5px; }
.mobile-nav-drawer::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.06); }
.mobile-nav-drawer::-webkit-scrollbar-thumb { background: var(--accent-cyan); border-radius: 999px; }

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 2400;
  display: none;
}

.mobile-nav-overlay.open {
  display: block;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-top: 1.1rem;
}

.mobile-nav-cta {
  margin-bottom: 0.85rem;
}

.mobile-nav-link {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: block;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link:hover {
  color: var(--accent-cyan);
}

.mobile-nav-about {
  display: grid;
  gap: 0.2rem;
}

.mobile-nav-submenu-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  width: fit-content;
  margin-left: 0.6rem;
  padding: 0.15rem 0;
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  font: 600 0.85rem var(--font-main);
  cursor: pointer;
}

.mobile-nav-submenu-link:hover {
  color: var(--accent-cyan);
}

.mobile-nav-submenu-link .material-symbols-rounded {
  font-size: 1.05rem;
}

.mobile-nav-requisites-toggle {
  justify-content: flex-start;
}

.mobile-nav-requisites-chevron {
  margin-left: auto;
  transition: transform var(--transition-fast);
}

.mobile-nav-requisites-toggle[aria-expanded="true"] .mobile-nav-requisites-chevron {
  transform: rotate(180deg);
}

.mobile-nav-requisites-panel {
  margin: 0.05rem 0 0.35rem 0.6rem;
  padding: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.mobile-nav-requisites-panel .requisites-list {
  grid-template-columns: 1fr;
}

.mobile-nav-requisites-panel .requisites-list .requisites-wide {
  grid-column: auto;
}

/* ================= MOBILE PHONES (< 768px) ================= */
@media (max-width: 767px) {
  .header-inner {
    height: 64px;
    gap: .5rem;
  }

  .requisites-modal {
    max-height: calc(100vh - 2rem);
    overflow-y: auto;
    padding: 1.65rem 1.25rem;
  }

  .requisites-list {
    grid-template-columns: 1fr;
  }

  .requisites-list .requisites-wide {
    grid-column: auto;
  }

  .brand-logo-lockup {
    width: auto;
    height: 48px;
    max-width: 68px;
  }

  .header-controls {
    flex: 0 0 auto;
    gap: .35rem;
  }

  .header-controls .lang-switcher,
  .header-controls .header-cta {
    display: none;
  }

  .header-controls .theme-toggle-btn {
    display: flex;
  }

  .header-controls .site-search-toggle {
    display: flex;
  }

  .mobile-menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    padding: 0;
    font-size: 1.35rem;
  }

  section {
    padding: 4rem 0;
  }

  .hero-section {
    padding-top: 7rem;
    padding-bottom: 3rem;
  }

  .hero-title {
    font-size: 2.15rem;
  }

  .hero-visual-card {
    padding: 0;
  }

  .visual-title {
    margin-bottom: 1.1rem;
  }

  .visual-list {
    grid-template-columns: 1fr;
  }

  .visual-item {
    min-height: auto;
  }

  .hero-desc {
    font-size: 1rem;
  }

  .hero-stats-wrapper {
    grid-template-columns: 1fr;
  }

  .stat-item {
    min-height: 0;
    padding: 1.25rem 1.5rem;
  }

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

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

  .partners-grid.is-collapsed .partner-card:nth-child(n + 3) {
    display: none;
  }

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

  .conf-modules-group {
    grid-template-columns: 1fr;
  }

  .conf-scale-labels {
    display: none;
  }

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

  .conf-remove-scale-btn {
    justify-self: start;
  }

  .conf-size-control {
    margin-left: 0;
  }

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

  .configurator-wrapper, .contact-form-wrapper {
    padding: 1.5rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .site-legal-footer-inner {
    flex-direction: column;
    gap: 0.35rem;
    text-align: center;
  }

  .header-controls .header-cta {
    display: none;
  }
}

@media (max-width: 640px) {
  .floating-contact-actions {
    right: 0.9rem;
    bottom: 4.1rem;
    gap: 1.8rem;
  }

  .floating-contact-btn {
    width: 50px;
    height: 50px;
  }

  .back-to-top {
    right: 0.9rem;
    bottom: 0.9rem;
  }

  .site-search-popover {
    width: min(22rem, calc(100vw - 1rem));
    padding: 0.85rem;
  }

  .site-search-field kbd {
    display: none;
  }

  .site-search-results {
    max-height: 50vh;
  }
}