/* Responsive Breakpoints & Mobile Optimization */

/* Tablets & Small Desktops (1024px and below) */
@media (max-width: 1024px) {
  .hero-grid {
    gap: 40px;
  }
  
  .hero-headline {
    font-size: 3.2rem;
  }
  
  .hero-subheadline {
    font-size: 1.4rem;
  }
  
  .charts-grid {
    grid-template-columns: 1fr;
  }
  
  .charts-row-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .admin-layout {
    grid-template-columns: 220px 1fr;
  }
}

/* Tablets & Mobile Devices (768px and below) */
@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  /* Navigation Drawer for Mobile */
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    background: rgba(7, 27, 53, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid var(--border-glass);
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 24px;
    gap: 24px;
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 99;
  }

  [data-theme="light"] .nav-links {
    background: rgba(255, 255, 255, 0.95);
  }

  .nav-links.active {
    left: 0;
  }

  /* Hamburger Menu Button */
  .hamburger-btn {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 30px;
    justify-content: center;
    align-items: center;
    z-index: 101;
    color: var(--text-primary);
  }

  .hamburger-line {
    width: 24px;
    height: 2px;
    background-color: currentColor;
    transition: var(--transition);
  }

  .hamburger-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .hamburger-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
  }

  .hamburger-btn.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }

  /* Layout changes */
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 20px;
  }

  .hero-content {
    align-items: center;
  }

  .hero-brand {
    justify-content: center;
  }

  .hero-badge-glow {
    align-self: center;
  }

  .hero-headline {
    font-size: 2.6rem;
  }

  .hero-subheadline {
    font-size: 1.25rem;
  }

  .hero-desc {
    margin: 0 auto;
  }

  .hero-actions {
    justify-content: center;
    width: 100%;
  }

  .benefits-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* Form & Register layout changes */
  .registration-container {
    padding: 24px 16px;
    margin-top: 90px;
  }

  .form-grid-2 {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .step-labels {
    display: none; /* Hide labels to save space, rely on numeric progress */
  }

  .step-indicator {
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
  }

  /* Admin Dashboard Mobile layout (collapsible sidebar) */
  .admin-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 260px;
    height: 100vh;
    z-index: 105;
    transition: left 0.3s ease;
  }

  .sidebar.active {
    left: 0;
  }

  .sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 104;
    display: none;
  }

  .sidebar-overlay.active {
    display: block;
  }

  .main-content {
    padding: 24px 16px;
  }

  .dashboard-header {
    margin-bottom: 24px;
  }

  .menu-toggle-btn {
    display: flex !important;
  }

  .charts-row-3 {
    grid-template-columns: 1fr;
  }

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

  .detail-item.full-width {
    grid-column: span 1;
  }
}

/* Small Mobile Devices (480px and below) */
@media (max-width: 480px) {
  .section-title {
    font-size: 2rem;
  }
  
  .hero-headline {
    font-size: 2.1rem;
  }

  .hero-subheadline {
    font-size: 1.1rem;
  }

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

  .btn {
    padding: 10px 22px;
    font-size: 0.9rem;
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .btn-hero-cta, .btn-hero-secondary {
    width: 100%;
    text-align: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .success-modal {
    padding: 24px 16px;
  }

  .checkmark-circle {
    width: 60px;
    height: 60px;
    font-size: 2rem;
    margin-bottom: 16px;
  }

  .receipt-slip {
    padding: 14px;
  }

  .receipt-row {
    font-size: 0.8rem;
  }

  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    max-width: 100%;
  }

  .filter-options {
    width: 100%;
  }

  .filter-select {
    flex-grow: 1;
  }

  .floating-register-btn {
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
  }

  .back-to-top-btn {
    bottom: 80px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}