/* ==========================================================================
   GLERC — Responsive Design
   Mobile-first breakpoints: 320px+ → 768px+ → 1024px+ → 1440px+ → 1920px+
   ========================================================================== */

/* ========== MOBILE (Default — 320px+) ========== */

/* Navbar */
.navbar-toggle {
  display: flex;
}

.navbar-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: rgba(10, 15, 13, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-left: 1px solid var(--border-light);
  padding: var(--space-10) var(--space-4) var(--space-4);
  z-index: var(--z-navbar);
  transition: right var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.navbar-menu.open {
  right: 0;
}

.navbar-menu .navbar-nav {
  flex-direction: column;
  gap: var(--space-1);
}

.navbar-menu .navbar-nav a {
  display: block;
  padding: var(--space-2) var(--space-2);
  font-size: 1rem;
  border-radius: var(--radius-sm);
}

.navbar-menu .navbar-nav a:hover,
.navbar-menu .navbar-nav a.active {
  background: rgba(0, 200, 83, 0.08);
}

.navbar-menu .navbar-nav a::after {
  display: none;
}

.navbar-menu .navbar-cta {
  flex-direction: column;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-light);
}

.navbar-menu .navbar-cta .btn {
  width: 100%;
  justify-content: center;
}

/* Theme toggle in mobile nav */
.navbar-menu .navbar-cta .theme-toggle {
  width: 100%;
  justify-content: center;
  height: 44px;
}

/* Light theme mobile menu */
[data-theme="light"] .navbar-menu {
  background: rgba(244, 247, 245, 0.97);
}

/* Mobile Menu Overlay */
.menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-navbar) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

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

.about-bento-grid {
  grid-template-columns: 1fr;
}

.bento-main,
.bento-carousel {
  grid-column: span 1;
}

.chairman-card {
  grid-template-columns: 1fr;
  text-align: center;
  padding: var(--space-5);
}

.chairman-image {
  width: 180px;
  height: 220px;
  margin: 0 auto;
}

.chairman-quote {
  border-left: none;
  padding-left: 0;
  border-top: 2px solid var(--primary);
  padding-top: var(--space-3);
}

.chairman-contacts {
  align-items: center;
}

/* Footer */
.footer-grid {
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

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

/* Client Grid */
.client-grid {
  grid-template-columns: 1fr;
}

/* Values Grid */
.values-grid {
  grid-template-columns: 1fr;
}

/* Trust Badges */
.trust-badges {
  flex-direction: column;
  gap: var(--space-1);
}

/* Hero */
.hero-content {
  padding: var(--space-3);
}

.hero-actions .btn {
  width: 100%;
}

/* Hero slider — mobile: always show arrows, smaller size */
.hero-slider-arrow {
  opacity: 0.7;
  width: 40px;
  height: 40px;
  font-size: 0.85rem;
}

.hero-slider-prev {
  left: var(--space-2);
}

.hero-slider-next {
  right: var(--space-2);
}

.hero-slider-controls {
  bottom: var(--space-5);
}

.hero-slider-counter {
  display: none;
}

/* Container padding */
.container {
  padding-left: var(--space-2);
  padding-right: var(--space-2);
}

/* ========== TABLET (768px+) ========== */
@media (min-width: 768px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

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

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

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .hero-actions .btn {
    width: auto;
  }

  .trust-badges {
    flex-direction: row;
  }

  .hero-slider-arrow {
    opacity: 0;
    width: 56px;
    height: 56px;
    font-size: 1.1rem;
  }

  .hero-slider-prev {
    left: var(--space-4);
  }

  .hero-slider-next {
    right: var(--space-4);
  }

  .hero-slider-controls {
    bottom: var(--space-6);
  }

  .hero-slider-counter {
    display: flex;
  }

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

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

  .bento-main,
  .bento-carousel {
    grid-column: span 2;
  }

  .chairman-card {
    text-align: left;
    padding: var(--space-6);
  }

  .chairman-image {
    margin: 0;
  }

  .chairman-quote {
    border-top: none;
    border-left: 3px solid var(--primary);
    padding-top: 0;
    padding-left: var(--space-4);
  }

  .chairman-contacts {
    align-items: flex-start;
  }
}

/* ========== LAPTOP (1024px+) ========== */
@media (min-width: 1024px) {

  /* Hide Mobile Menu Overrides */
  .navbar-toggle {
    display: none;
  }

  .about-bento-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .bento-main {
    grid-column: span 2;
  }
  
  .bento-carousel {
    grid-column: span 4;
  }

  .navbar-menu {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-left: none;
    padding: 0;
    flex-direction: row;
    align-items: center;
    gap: var(--space-5);
  }

  [data-theme="light"] .navbar-menu {
    background: transparent;
  }

  .navbar-menu .navbar-nav {
    flex-direction: row;
    gap: var(--space-4);
  }

  .navbar-menu .navbar-nav a {
    padding: var(--space-1) 0;
    font-size: 0.9rem;
  }

  .navbar-menu .navbar-nav a:hover,
  .navbar-menu .navbar-nav a.active {
    background: transparent;
  }

  .navbar-menu .navbar-nav a::after {
    display: block;
  }

  .navbar-menu .navbar-cta {
    flex-direction: row;
    padding-top: 0;
    border-top: none;
  }

  .navbar-menu .navbar-cta .btn {
    width: auto;
  }

  .navbar-menu .navbar-cta .theme-toggle {
    width: 40px;
    height: 40px;
    margin-right: var(--space-1);
  }

  .menu-overlay {
    display: none;
  }

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

  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

  .chairman-card {
    grid-template-columns: auto 1fr;
    padding: var(--space-8);
  }

  .chairman-image {
    width: 240px;
    height: 300px;
  }
}

/* ========== DESKTOP (1440px+) ========== */
@media (min-width: 1440px) {
  .container {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }

  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  section {
    padding: var(--space-15) 0;
  }

  section.section-lg {
    padding: 160px 0;
  }
}

/* ========== ULTRA-WIDE (1920px+) ========== */
@media (min-width: 1920px) {
  .container {
    max-width: 1600px;
  }

  h1 {
    font-size: 4.5rem;
  }

  h2 {
    font-size: 3rem;
  }
}