/* DC Design Coop - Shared CSS */
.navbar {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: transparent;
      padding: 20px 60px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: background .3s ease;
    }
    
    .navbar.scrolled {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      box-shadow: 0 2px 10px rgba(0,0,0,.05);
    }
    
    .logo-container {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    
    .logo-container img {
      height: 45px;
      width: auto;
    }
    
    .logo-text {
      font-weight: 600;
      font-size: 13px;
      letter-spacing: .2em;
      text-transform: uppercase;
      color: #fff;
      transition: color .3s;
    }
    
    .navbar.scrolled .logo-text {
      color: #111;
    }
    
    .nav-links {
      display: flex;
      gap: 32px;
      font-size: 14px;
    }
    
    .nav-links a {
      text-decoration: none;
      color: #fff;
      transition: color .2s;
      font-weight: 500;
    }
    
    .navbar.scrolled .nav-links a {
      color: #111;
    }
    
    .nav-links a:hover {
      color: #667eea;
    }

    /* WHATSAPP BUTTON */
    .whatsapp-float {
      position: fixed;
      bottom: 30px;
      right: 30px;
      z-index: 999;
      width: 60px;
      height: 60px;
      background: #25D366;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
      cursor: pointer;
      transition: all .3s ease;
      text-decoration: none;
    }
    
    .whatsapp-float:hover {
      transform: scale(1.1);
      box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
    }
    
    .whatsapp-float svg {
      width: 35px;
      height: 35px;
      fill: white;
    }

    /* HERO FULL SCREEN WITH SLIDER */
    .hero {
      height: 100vh;
      display: flex;
      align-items: center;
      padding: 0 60px;
      color: white;
      position: relative;
      overflow: hidden;
    }
    
    .hero-slides {
      position: absolute;
      inset: 0;
      z-index: 0;
    }
    
    .hero-slide {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      opacity: 0;
      transition: opacity 1s ease-in-out;
    }
    
    .hero-slide.active {
      opacity: 1;
    }
    
    .hero-slide::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to right, rgba(0,0,0,.6), rgba(0,0,0,.2));
    }
    
    .hero-content {
      max-width: 1180px;
      margin: 0 auto;
      width: 100%;
      position: relative;
      z-index: 1;
    }
    
    .hero-eyebrow {
      font-size: 12px;
      letter-spacing: .3em;
      text-transform: uppercase;
      opacity: .9;
      margin-bottom: 20px;
    }
    
    .hero-title {
      font-family: "Playfair Display", Georgia, serif;
      font-size: 72px;
      line-height: 1.1;
      margin-bottom: 24px;
      font-weight: 700;
    }
    
    .hero-subtitle {
      font-size: 20px;
      max-width: 600px;
      margin-bottom: 40px;
      opacity: .95;
      line-height: 1.6;
    }
    
    .hero-buttons {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
    }
    
    /* ENHANCED BUTTON ANIMATIONS */
    .hero-btn {
      border: 2px solid rgba(255,255,255,.85);
      background: transparent;
      color: white;
      padding: 16px 48px;
      font-size: 15px;
      font-weight: 500;
      border-radius: 999px;
      cursor: pointer;
      text-decoration: none;
      display: inline-block;
      transition: all .4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
      position: relative;
      overflow: hidden;
    }
    
    .hero-btn::before {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 0;
      height: 0;
      border-radius: 50%;
      background: rgba(255,255,255,.2);
      transform: translate(-50%, -50%);
      transition: width .6s ease, height .6s ease;
    }
    
    .hero-btn:hover::before {
      width: 300px;
      height: 300px;
    }
    
    .hero-btn:hover {
      background: rgba(255,255,255,.95);
      color: #667eea;
      border-color: #fff;
      transform: translateY(-5px) scale(1.05);
      box-shadow: 0 15px 35px rgba(0,0,0,.3);
      font-weight: 600;
    }
    
    .hero-btn:active {
      transform: translateY(-2px) scale(1.02);
    }

    /* SCROLL DOWN ANIMATION */
    .scroll-indicator {
      position: absolute;
      bottom: 40px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 12px;
      z-index: 10;
      cursor: pointer;
    }
    
    .scroll-mouse {
      width: 30px;
      height: 50px;
      border: 2px solid rgba(255,255,255,.6);
      border-radius: 15px;
      position: relative;
    }
    
    .scroll-mouse::before {
      content: '';
      position: absolute;
      top: 8px;
      left: 50%;
      transform: translateX(-50%);
      width: 4px;
      height: 8px;
      background: rgba(255,255,255,.8);
      border-radius: 2px;
      animation: scroll-animation 2s infinite;
    }
    
    @keyframes scroll-animation {
      0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
      }
      100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
      }
    }
    
    .scroll-text {
      font-size: 11px;
      letter-spacing: .2em;
      text-transform: uppercase;
      opacity: .7;
      animation: fade-pulse 2s infinite;
    }
    
    @keyframes fade-pulse {
      0%, 100% {
        opacity: .7;
      }
      50% {
        opacity: .3;
      }
    }
    
    .scroll-dots {
      display: flex;
      gap: 8px;
      margin-top: 8px;
    }
    
    .scroll-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: rgba(255,255,255,.4);
      cursor: pointer;
      transition: all .3s;
    }
    
    .scroll-dot.active {
      background: rgba(255,255,255,.9);
      transform: scale(1.3);
    }

    /* PRODUCTS - 3 COLUMN GRID */
    .products {
      padding: 80px 40px;
      background: white;
    }
    
    .products-header {
      font-family: "Playfair Display", Georgia, serif;
      font-size: 42px;
      text-align: center;
      margin-bottom: 60px;
      color: #1a1a1a;
    }
    
    .products-grid {
      max-width: 1400px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    
    .product-card {
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 20px rgba(0,0,0,.08);
      transition: all .3s ease;
      text-decoration: none;
      color: inherit;
      display: block;
      background: white;
      position: relative;
    }
    
    .product-card figure {
      margin: 0;
      position: relative;
      overflow: hidden;
    }
    
    .product-card img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      display: block;
      transition: transform .3s ease;
    }
    
    .product-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 12px 40px rgba(0,0,0,.15);
    }
    
    .product-card:hover img {
      transform: scale(1.05);
    }
    
    .product-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to bottom, rgba(0,0,0,.3), rgba(0,0,0,.6));
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 24px;
      color: white;
      text-align: center;
    }
    
    .product-title {
      font-family: "Playfair Display", Georgia, serif;
      font-size: 26px;
      margin-bottom: 16px;
      font-weight: 600;
    }
    
    .product-cta-wrap {
      display: flex;
      justify-content: center;
    }
    
    .product-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      opacity: .95;
      border-bottom: 1px solid rgba(255,255,255,.5);
      padding-bottom: 4px;
    }
    
    .product-cta .arrow {
      transition: transform .2s;
    }
    
    .product-card:hover .product-cta .arrow {
      transform: translateX(4px);
    }

    #indoor-products {
      padding: 80px 40px;
      background: #f9f9f9;
    }

    /* CONTACT */
    .contact {
      background: #f9f9f9;
      padding: 100px 40px 120px;
    }
    
    .contact-inner {
      max-width: 1400px;
      margin: 0 auto;
    }
    
    .contact-header {
      max-width: 700px;
      margin: 0 auto 60px;
      text-align: center;
    }
    
    .contact-eyebrow {
      font-size: 12px;
      letter-spacing: .3em;
      text-transform: uppercase;
      color: #666;
      margin-bottom: 16px;
      font-weight: 500;
    }
    
    .contact-title {
      font-family: "Playfair Display", Georgia, serif;
      font-size: 42px;
      line-height: 1.15;
      margin-bottom: 20px;
      color: #1a1a1a;
    }
    
    .contact-intro {
      font-size: 17px;
      color: #555;
      line-height: 1.7;
    }
    
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
      margin-bottom: 32px;
    }
    
    .contact-card {
      background: white;
      padding: 40px 36px;
      box-shadow: 0 2px 12px rgba(0,0,0,.06);
      border-radius: 2px;
      transition: all .3s ease;
    }
    
    .contact-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 32px rgba(0,0,0,.12);
    }
    
    .contact-region {
      font-size: 11px;
      letter-spacing: .25em;
      text-transform: uppercase;
      color: #999;
      font-weight: 600;
      margin-bottom: 8px;
    }
    
    .contact-heading {
      font-family: "Playfair Display", Georgia, serif;
      font-size: 28px;
      margin-bottom: 20px;
      color: #1a1a1a;
      font-weight: 600;
    }
    
    .contact-label {
      font-size: 11px;
      font-weight: 700;
      color: #888;
      margin-top: 20px;
      margin-bottom: 8px;
      letter-spacing: .12em;
      text-transform: uppercase;
    }
    
    .contact-text {
      font-size: 15px;
      color: #333;
      line-height: 1.7;
    }
    
    .contact-text a {
      color: #1a1a1a;
      text-decoration: none;
      border-bottom: 1px solid rgba(0,0,0,.2);
      padding-bottom: 2px;
      transition: border-color .2s;
    }
    
    .contact-text a:hover {
      border-color: rgba(0,0,0,.6);
    }
    
    /* ─── FOOTER ─── */
    .site-footer {
      background: #1a1a1a;
      color: #e0e0e0;
      padding: 0;
      position: relative;
      overflow: hidden;
    }

    .site-footer::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, #c9a961, #e8d5a0, #c9a961);
      background-size: 200% 100%;
      animation: shimmer 4s ease infinite;
    }

    @keyframes shimmer {
      0% { background-position: 200% 0; }
      100% { background-position: -200% 0; }
    }

    /* Footer always visible */
    .footer-inner,
    .footer-bottom {
      opacity: 1;
      transform: translateY(0);
    }

    .site-footer.visible .footer-inner {
      opacity: 1;
      transform: translateY(0);
    }

    .site-footer.visible .footer-bottom {
      opacity: 1;
      transform: translateY(0);
    }

    .footer-inner {
      max-width: 1400px;
      margin: 0 auto;
      padding: 64px 40px 48px;
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
      gap: 48px;
      align-items: start;
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .footer-logo {
      height: 48px;
      width: auto;
      object-fit: contain;
      align-self: flex-start;
      filter: brightness(0) invert(1);
      opacity: 0.85;
      transition: opacity 0.4s ease, transform 0.4s ease;
    }

    .footer-logo:hover {
      opacity: 1;
      transform: scale(1.04);
    }

    .footer-slogan {
      font-family: "Playfair Display", Georgia, serif;
      font-size: 20px;
      font-weight: 500;
      color: rgba(255,255,255,0.6);
      letter-spacing: 0.01em;
    }

    .footer-col {
      display: flex;
      flex-direction: column;
      gap: 0;
    }

    .footer-col-title {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: #c9a961;
      margin-bottom: 20px;
      padding-bottom: 10px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }

    .footer-col a {
      font-size: 14px;
      color: rgba(255,255,255,0.65);
      text-decoration: none;
      padding: 8px 0;
      transition: color 0.3s ease, transform 0.3s ease, padding-left 0.3s ease;
      display: inline-block;
      position: relative;
    }

    .footer-col a::before {
      content: '';
      position: absolute;
      left: 0;
      bottom: 6px;
      width: 0;
      height: 1px;
      background: #c9a961;
      transition: width 0.35s ease;
    }

    .footer-col a:hover {
      color: #fff;
      padding-left: 6px;
    }

    .footer-col a:hover::before {
      width: 100%;
    }

    .footer-social-icons {
      display: flex;
      gap: 12px;
      margin-top: 4px;
    }

    .footer-social-icons a {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0;
      transition: all 0.35s ease;
    }

    .footer-social-icons a::before {
      display: none;
    }

    .footer-social-icons a:hover {
      border-color: #c9a961;
      background: rgba(201,169,97,0.12);
      transform: translateY(-3px);
      padding-left: 0;
    }

    .footer-social-icons a svg {
      width: 18px;
      height: 18px;
      fill: rgba(255,255,255,0.6);
      transition: fill 0.3s ease;
    }

    .footer-social-icons a:hover svg {
      fill: #c9a961;
    }

    .footer-bottom {
      max-width: 1400px;
      margin: 0 auto;
      padding: 20px 40px;
      border-top: 1px solid rgba(255,255,255,0.06);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
    }

    .footer-bottom span {
      font-size: 12px;
      color: rgba(255,255,255,0.35);
      letter-spacing: 0.04em;
    }

    /* Footer responsive */
    @media (max-width: 900px) {
      .footer-inner {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
        padding: 48px 24px 36px;
      }
      .footer-brand {
        grid-column: 1 / -1;
      }
      #sss-section { padding: 30px 20px 10px !important; }
    }

    @media (max-width: 600px) {
      .footer-inner {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 40px 20px 28px;
      }
      .footer-bottom {
        padding: 16px 20px;
      }
    }

    /* ─── SSS Accordion ─── */
    .sss-item {
      border-bottom: 1px solid rgba(255,255,255,0.08);
      cursor: pointer;
      max-width: 900px;
      margin: 0 auto;
    }
    .sss-question {
      padding: 16px 0;
      font-size: 15px;
      font-weight: 600;
      color: rgba(255,255,255,0.85);
      position: relative;
      padding-right: 30px;
      transition: color 0.3s;
    }
    .sss-question::after {
      content: '+';
      position: absolute;
      right: 0;
      top: 16px;
      font-size: 20px;
      color: #c9a961;
      transition: transform 0.3s;
    }
    .sss-item.open .sss-question::after { content: '−'; }
    .sss-item:hover .sss-question { color: #fff; }
    .sss-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.4s ease;
      font-size: 14px;
      color: rgba(255,255,255,0.55);
      line-height: 1.7;
      padding: 0;
    }
    .sss-item.open .sss-answer {
      max-height: 300px;
      padding: 0 0 16px 0;
    }

    /* RESPONSIVE */
    @media (max-width: 1200px) {
      .products-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    
    @media (max-width: 1024px) {
      .contact-grid {
        grid-template-columns: 1fr;
      }
    }
    
    @media (max-width: 768px) {
      .navbar {
        padding: 12px 20px;
      }
      
      .logo-container {
        flex-direction: column;
        gap: 4px;
      }
      
      .logo-container img {
        height: 35px;
      }
      
      .logo-text {
        font-size: 10px;
      }
      
      .nav-links {
        display: none;
      }
      
      .hero {
        padding: 0 20px;
      }
      
      .hero-title {
        font-size: 42px;
      }
      
      .hero-subtitle {
        font-size: 16px;
      }
      
      .products {
        padding: 60px 20px;
      }
      
      .products-header {
        font-size: 32px;
      }
      
      .products-grid {
        grid-template-columns: 1fr;
      }
      
      .contact {
        padding: 60px 20px 80px;
      }
      
      .contact-title {
        font-size: 32px;
      }
      
      .contact-heading {
        font-size: 22px;
      }
      
      .contact-card {
        padding: 28px 24px;
      }
      
      .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
      }
      
      .whatsapp-float svg {
        width: 28px;
        height: 28px;
      }
      
      .scroll-indicator {
        bottom: 30px;
      }
      
      .scroll-mouse {
        width: 25px;
        height: 42px;
      }
    }
  
    /* ─── Navbar Dropdown ─── */
    .nav-dropdown {
      position: relative;
    }
    .nav-dropdown-trigger {
      text-decoration: none;
      color: #fff;
      font-weight: 500;
      font-size: 14px;
      transition: color .2s;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .navbar.scrolled .nav-dropdown-trigger { color: #111; }
    .nav-dropdown-trigger:hover { color: #c9a961 !important; }
    .dd-arrow {
      font-size: 10px;
      transition: transform .3s;
    }
    .nav-dropdown:hover .dd-arrow { transform: rotate(180deg); }
    .nav-dropdown-menu {
      position: absolute;
      top: calc(100% + 16px);
      right: -40px;
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 25px 80px rgba(0,0,0,.15), 0 0 0 1px rgba(0,0,0,.04);
      padding: 28px;
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 32px;
      min-width: 680px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: all .3s cubic-bezier(.16,1,.3,1);
      pointer-events: none;
      z-index: 100;
    }
    .nav-dropdown-menu::before {
      content: '';
      position: absolute;
      top: -8px;
      right: 60px;
      width: 16px;
      height: 16px;
      background: #fff;
      transform: rotate(45deg);
      border-radius: 3px 0 0 0;
      box-shadow: -2px -2px 4px rgba(0,0,0,.03);
    }
    .nav-dropdown:hover .nav-dropdown-menu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
      pointer-events: auto;
    }
    /* Invisible bridge so hover doesn't break */
    .nav-dropdown::after {
      content: '';
      position: absolute;
      top: 100%;
      left: -20px;
      right: -20px;
      height: 20px;
    }
    .dd-section-title {
      font-size: 10px;
      font-weight: 700;
      letter-spacing: .18em;
      text-transform: uppercase;
      color: #c9a961;
      margin-bottom: 14px;
      padding-bottom: 10px;
      border-bottom: 1px solid #f0f0f0;
    }
    .dd-section a {
      display: block;
      font-size: 13px;
      color: #555;
      text-decoration: none;
      padding: 7px 0;
      transition: all .2s;
      line-height: 1.4;
    }
    .dd-section a:hover {
      color: #1a1a1a;
      padding-left: 6px;
    }
    .dd-view-all {
      margin-top: 8px;
      font-weight: 600;
      color: #c9a961 !important;
      font-size: 12px !important;
      letter-spacing: .05em;
    }
    .dd-view-all:hover {
      color: #1a1a1a !important;
    }

    /* Mobile drawer section title */
    .mob-drawer-section-title {
      font-size: 10px;
      font-weight: 700;
      letter-spacing: .15em;
      text-transform: uppercase;
      color: #c9a961;
      margin-top: 20px;
      padding: 10px 0 6px;
      border-top: 1px solid rgba(0,0,0,.08);
    }

    /* ─── Certificates Section ─── */
    .certificates {
      background: linear-gradient(135deg, #f5f0e8 0%, #ede6d8 50%, #f5f0e8 100%);
      padding: 100px 40px;
      position: relative;
      overflow: hidden;
    }
    .certificates::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(201,169,97,.3), transparent);
    }
    .certificates-inner { max-width: 1400px; margin: 0 auto; }
    .certificates-header { text-align: center; margin-bottom: 60px; }
    .certificates-eyebrow {
      font-size: 12px; letter-spacing: .3em; text-transform: uppercase;
      color: #a0834a; margin-bottom: 16px; font-weight: 500;
    }
    .certificates-title {
      font-family: "Playfair Display", Georgia, serif;
      font-size: 42px; line-height: 1.15; margin-bottom: 20px; color: #1a1a1a;
    }
    .certificates-intro {
      font-size: 17px; color: #777; line-height: 1.7;
      max-width: 600px; margin: 0 auto;
    }
    .cert-carousel-wrapper {
      position: relative; display: flex; align-items: center; gap: 16px;
    }
    .cert-carousel {
      display: flex; gap: 24px; overflow-x: auto; scroll-behavior: smooth;
      scrollbar-width: none; padding: 20px 0; -ms-overflow-style: none;
    }
    .cert-carousel::-webkit-scrollbar { display: none; }
    .cert-nav {
      flex-shrink: 0; width: 48px; height: 48px; border-radius: 50%;
      border: 1px solid rgba(160,131,74,.3); background: rgba(160,131,74,.08);
      color: #a0834a; font-size: 28px; cursor: pointer;
      display: flex; align-items: center; justify-content: center; transition: all .3s;
    }
    .cert-nav:hover {
      background: rgba(160,131,74,.18); border-color: #a0834a; transform: scale(1.1);
    }
    .cert-card { flex: 0 0 260px; perspective: 600px; }
    .cert-card-inner {
      background: #fff; border: 1px solid rgba(0,0,0,.06);
      border-radius: 16px; padding: 32px 24px; text-align: center;
      transition: all .5s cubic-bezier(.175,.885,.32,1.275);
      position: relative; overflow: hidden;
      box-shadow: 0 2px 12px rgba(0,0,0,.04);
    }
    .cert-card-inner::before {
      content: ''; position: absolute; top: -50%; left: -50%;
      width: 200%; height: 200%;
      background: conic-gradient(from 0deg, transparent, rgba(201,169,97,.06), transparent, transparent);
      animation: certRotate 6s linear infinite; opacity: 0; transition: opacity .5s;
    }
    .cert-card:hover .cert-card-inner::before { opacity: 1; }
    @keyframes certRotate { 100% { transform: rotate(360deg); } }
    .cert-card:hover .cert-card-inner {
      transform: translateY(-8px) rotateY(3deg);
      border-color: rgba(201,169,97,.25);
      box-shadow: 0 20px 50px rgba(0,0,0,.08), 0 0 20px rgba(201,169,97,.08);
    }
    .cert-img {
      width: 100%; height: 140px; object-fit: contain;
      margin-bottom: 18px; border-radius: 8px;
      position: relative; z-index: 1;
    }
    .cert-name {
      font-family: "Playfair Display", Georgia, serif;
      font-size: 17px; color: #1a1a1a; margin-bottom: 8px; font-weight: 600;
      position: relative; z-index: 1;
    }
    .cert-desc {
      font-size: 13px; color: #888; line-height: 1.6;
      position: relative; z-index: 1;
    }
    @media (max-width: 768px) {
      .certificates { padding: 60px 20px; }
      .certificates-title { font-size: 32px; }
      .cert-card { flex: 0 0 220px; }
      .cert-nav { width: 40px; height: 40px; font-size: 22px; }
    }
    @media (max-width: 900px) {
      .nav-dropdown-menu { display: none !important; }
    }

    /* ─── Language Switcher ─── */
    .lang-switch {
      display: flex;
      align-items: center;
      gap: 0;
      background: rgba(0,0,0,0.04);
      border-radius: 8px;
      padding: 3px;
      position: relative;
      flex-shrink: 0;
      margin-left: 16px;
    }
    .lang-btn {
      position: relative;
      z-index: 2;
      padding: 6px 14px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      text-decoration: none;
      color: #888;
      border: none;
      background: none;
      cursor: pointer;
      border-radius: 6px;
      transition: color 0.35s cubic-bezier(.16,1,.3,1);
      white-space: nowrap;
      font-family: inherit;
    }
    .lang-btn:hover { color: #333; }
    .lang-btn.active { color: #fff; pointer-events: none; }
    .lang-slider {
      pointer-events: none;
      position: absolute;
      top: 3px;
      left: 3px;
      width: calc(50% - 3px);
      height: calc(100% - 6px);
      background: #2b2b2b;
      border-radius: 6px;
      transition: transform 0.4s cubic-bezier(.16,1,.3,1);
      z-index: 1;
    }
    .lang-switch[data-active="tr"] .lang-slider { transform: translateX(100%); }

    /* Lang switch: transparent header (light mode) */
    .navbar .lang-switch {
      background: rgba(255,255,255,0.12);
    }
    .navbar .lang-btn {
      color: rgba(255,255,255,0.65);
    }
    .navbar .lang-btn:hover {
      color: rgba(255,255,255,0.95);
    }
    .navbar .lang-btn.active {
      color: #2b2b2b;
    }
    .navbar .lang-slider {
      background: rgba(255,255,255,0.92);
    }
    /* Lang switch: solid header (dark mode) */
    .navbar.scrolled .lang-switch {
      background: rgba(0,0,0,0.04);
    }
    .navbar.scrolled .lang-btn {
      color: #888;
    }
    .navbar.scrolled .lang-btn:hover {
      color: #333;
    }
    .navbar.scrolled .lang-btn.active {
      color: #fff;
    }
    .navbar.scrolled .lang-slider {
      background: #2b2b2b;
    }

    /* ─── Hamburger Menu ─── */
    .hamburger {
      display: none;
      width: 40px;
      height: 40px;
      border: 1px solid rgba(255,255,255,.35);
      background: rgba(255,255,255,.08);
      border-radius: 999px;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all .3s ease;
      flex-shrink: 0;
      margin-left: 12px;
    }
    .hamburger span {
      display: block;
      width: 18px;
      height: 2px;
      background: rgba(255,255,255,.85);
      position: relative;
      transition: background .3s ease;
    }
    .hamburger span::before,
    .hamburger span::after {
      content: "";
      position: absolute;
      left: 0;
      width: 18px;
      height: 2px;
      background: rgba(255,255,255,.85);
      transition: all .3s ease;
    }
    .hamburger span::before { top: -6px; }
    .hamburger span::after { top: 6px; }

    /* Scrolled state: dark hamburger */
    .navbar.scrolled .hamburger {
      border-color: rgba(0,0,0,.18);
      background: rgba(0,0,0,.02);
    }
    .navbar.scrolled .navbar.scrolled .navbar.scrolled .hamburger span,
    .navbar.scrolled .hamburger span::before,
    .navbar.scrolled .hamburger span::after {
      background: rgba(17,17,17,.85);
    }

    /* ─── Mobile Drawer ─── */
    .mob-drawer {
      position: fixed;
      inset: 0;
      z-index: 9999;
      pointer-events: none;
      opacity: 0;
      transition: opacity .35s ease;
    }
    .mob-drawer.open {
      pointer-events: auto;
      opacity: 1;
    }
    .mob-drawer-backdrop {
      position: absolute;
      inset: 0;
      background: rgba(0,0,0,.45);
    }
    .mob-drawer-panel {
      position: absolute;
      top: 0;
      right: 0;
      height: 100%;
      width: min(340px, 85vw);
      background: rgba(255,255,255,.98);
      backdrop-filter: blur(10px);
      transform: translateX(100%);
      transition: transform .35s ease;
      display: flex;
      flex-direction: column;
      padding: 28px 24px;
    }
    .mob-drawer.open .mob-drawer-panel {
      transform: translateX(0);
    }
    .mob-drawer-close {
      align-self: flex-end;
      background: none;
      border: none;
      font-size: 22px;
      cursor: pointer;
      width: 36px;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      transition: background .2s;
    }
    .mob-drawer-close:hover {
      background: rgba(0,0,0,.06);
    }
    .mob-drawer-nav {
      display: flex;
      flex-direction: column;
      gap: 0;
      margin-top: 24px;
    }
    .mob-drawer-nav a {
      display: block;
      padding: 14px 0;
      font-size: 14px;
      letter-spacing: .04em;
      text-transform: uppercase;
      text-decoration: none;
      color: #111;
      font-weight: 500;
      border-bottom: 1px solid rgba(0,0,0,.06);
      transition: color .2s;
    }
    .mob-drawer-nav a:hover {
      color: #c9a961;
    }

    @media (max-width: 900px) {
      .hamburger { display: flex; }
    }