@layer components {
  /* Navigation Bar */
  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(6, 7, 13, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--theme-border);
    z-index: 1000;
    transition: var(--transition-normal);
  }

  .navbar.scrolled {
    background: rgba(6, 7, 13, 0.9);
    height: 70px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }

  .navbar .container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
  }

  .logo svg {
    width: 32px;
    height: 32px;
    stroke: url(#logo-gradient);
    fill: none;
  }

  .nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
  }

  .nav-item {
    position: relative;
  }

  .nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    padding: 8px 0;
  }

  .nav-link:hover,
  .nav-link.active {
    color: var(--color-cyan);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, var(--color-cyan), var(--color-purple));
    transition: var(--transition-normal);
  }

  .nav-link:hover::after,
  .nav-link.active::after {
    width: 100%;
  }

  /* Hamburger Menu for Mobile */
  .menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1010;
  }

  .menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-normal);
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-cyan) 100%);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.4);
  }

  .btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border: 1px solid var(--theme-border);
  }

  .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--theme-border-hover);
    transform: translateY(-2px);
  }

  /* Glassmorphism Card */
  .glass-card {
    background: var(--theme-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--theme-border);
    border-radius: var(--border-radius-md);
    padding: 32px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
  }

  .glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: 0;
    pointer-events: none;
  }

  .glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), 
                0 0 15px rgba(0, 242, 254, 0.1);
  }

  .glass-card:hover::before {
    opacity: 1;
  }

  .glass-card > * {
    position: relative;
    z-index: 1;
  }

  /* Gradient Text & Headers */
  .gradient-text {
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
  }

  .section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
  }

  /* Scroll Reveal Fallback/Base */
  .scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .scroll-reveal.reveal-visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* Native Scroll-driven Animations */
  @media (prefers-reduced-motion: no-preference) {
    @supports ((animation-timeline: view()) and (animation-range: entry)) {
      .scroll-reveal-native {
        opacity: 1;
        transform: none;
        transition: none;
      }
      
      @keyframes fade-up {
        from {
          opacity: 0;
          transform: translateY(50px);
        }
      }
      
      .scroll-reveal-native {
        animation: fade-up auto linear backwards;
        animation-timeline: view();
        animation-range: entry 10% entry 30%;
      }
    }
  }

  /* Form Elements */
  .form-group {
    margin-bottom: 24px;
    position: relative;
  }

  .form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    transition: var(--transition-fast);
  }

  .form-control {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--theme-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all var(--transition-normal);
  }

  .form-control:focus {
    outline: none;
    border-color: var(--color-cyan);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
  }

  /* HTML5 validation styling via user-invalid */
  .form-control:user-invalid {
    border-color: var(--color-red);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.1);
  }

  .form-control:user-valid {
    border-color: var(--color-green);
  }

  textarea.form-control {
    min-height: 120px;
    resize: vertical;
  }

  /* Footer */
  .footer {
    background: var(--color-bg-dark);
    border-top: 1px solid var(--theme-border);
    padding-block: 80px 40px;
    margin-top: 100px;
    position: relative;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 60px;
  }

  .footer-logo {
    margin-bottom: 20px;
  }

  .footer-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 320px;
    margin-bottom: 24px;
  }

  .footer-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition-fast);
  }

  .footer-link:hover {
    color: var(--color-cyan);
    padding-left: 5px;
  }

  .footer-socials {
    display: flex;
    gap: 16px;
  }

  .social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--theme-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-normal);
  }

  .social-icon:hover {
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-purple) 100%);
    color: var(--color-white);
    transform: translateY(-3px);
  }

  .footer-bottom {
    border-top: 1px solid var(--theme-border);
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
  }

  .footer-bottom-links {
    display: flex;
    gap: 24px;
  }

  /* Certificate Modal */
  .cert-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(6, 7, 13, 0.9);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
  }

  .cert-modal.active {
    opacity: 1;
    pointer-events: all;
  }

  .modal-content {
    background: var(--color-bg-light);
    border: 1px solid var(--theme-border);
    border-radius: var(--border-radius-md);
    padding: 24px;
    max-width: 600px;
    width: 90%;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  }

  .cert-modal.active .modal-content {
    transform: scale(1);
  }

  .modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
  }

  .modal-close:hover {
    color: var(--color-cyan);
  }

  .modal-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 16px;
    text-align: center;
  }

  .modal-img {
    width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    background: #0f121d;
    padding: 16px;
    border: 1px solid var(--theme-border);
  }
}

/* Responsiveness */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: rgba(6, 7, 13, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding-top: 60px;
    gap: 40px;
    transition: var(--transition-slow);
  }

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

  .menu-toggle {
    display: flex;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}