* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  :root {
    --whatsapp-teal: #128c7e;
    --whatsapp-green: #25d366;
    --primary-blue: #2563eb;
    --accent-orange: #f97316;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-400: #94a3b8;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
  }
  
  body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
      sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
  }
  
  /* Header */
  header {
    background: transparent;
    margin-top: 20px;
    width: 100%;
  }
  
  nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
  }
  
  .logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--whatsapp-teal);
    text-decoration: none;
    transition: all 0.3s ease;
  }

  .brand-whats {
    color: var(--whatsapp-teal);
  }

  .brand-next {
    color: var(--gray-900);
    margin-left: 2px;
  }
  
  .logo:hover {
    transform: scale(1.05);
  }
  
  .logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    animation: pulse 2s infinite;
  }
  
  @keyframes pulse {
    0%,
    100% {
      transform: scale(1);
    }
    50% {
      transform: scale(1.05);
    }
  }
  
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: 2rem;
  }
  
  .nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
  }
  
  .nav-links a {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
  }
  
  .nav-links a:hover {
    color: var(--whatsapp-green);
  }
  
  .nav-links a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--whatsapp-green);
    transition: width 0.3s ease;
  }
  
  .nav-links a:hover::after {
    width: 100%;
  }
  
  .login-btn {
    background: var(--whatsapp-teal);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
  }
  
  .login-btn:hover {
    background: var(--whatsapp-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
  }
  
  /* Main Content */
  main {
    margin-top: 5rem;
  }
  
  /* Hero Section */
  .hero {
    background: linear-gradient(135deg, var(--gray-50) 0%, #e0f2fe 100%);
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  
  .hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="%23128c7e" opacity="0.1"><animate attributeName="opacity" values="0.1;0.3;0.1" dur="3s" repeatCount="indefinite"/></circle><circle cx="80" cy="30" r="1.5" fill="%232563eb" opacity="0.1"><animate attributeName="opacity" values="0.1;0.4;0.1" dur="4s" repeatCount="indefinite"/></circle><circle cx="60" cy="70" r="2.5" fill="%23f97316" opacity="0.1"><animate attributeName="opacity" values="0.1;0.2;0.1" dur="5s" repeatCount="indefinite"/></circle></svg>')
      repeat;
    animation: float 20s linear infinite;
  }
  
  @keyframes float {
    0% {
      transform: translateX(0) translateY(0);
    }
    100% {
      transform: translateX(-100px) translateY(-100px);
    }
  }
  
  .hero-content {
    position: relative;
    z-index: 2;
  }
  
  .hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(
      135deg,
      var(--whatsapp-teal),
      var(--primary-blue)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideUp 0.8s ease-out;
  }
  
  .hero p {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: slideUp 0.8s ease-out 0.2s both;
  }
  
  @keyframes slideUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: slideUp 0.8s ease-out 0.4s both;
  }
  
  .btn-primary {
    background: var(--whatsapp-teal);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }
  
  .btn-primary::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
      90deg,
      transparent,
      rgba(255, 255, 255, 0.2),
      transparent
    );
    transition: left 0.5s;
  }
  
  .btn-primary:hover::before {
    left: 100%;
  }
  
  .btn-primary:hover {
    background: var(--whatsapp-green);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
  }
  
  .btn-secondary {
    background: white;
    color: var(--gray-700);
    padding: 1rem 2rem;
    border: 2px solid var(--gray-200);
    border-radius: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
  }
  
  .btn-secondary:hover {
    border-color: var(--whatsapp-teal);
    color: var(--whatsapp-teal);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    cursor: pointer;
  }
  
  /* Video Modal */
  .video-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
  }
  
  .video-modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .video-container {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    width: 800px;
    background: black;
    border-radius: 1rem;
    overflow: visible; /* Changed from hidden to visible */
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.4s ease-out;
  }
  
  .close-btn {
    position: absolute;
    top: -20px; /* Moved further outside */
    right: -20px; /* Moved further outside */
    background: var(--whatsapp-teal);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    z-index: 10001; /* Increased z-index */
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  }
  
  .close-btn:hover {
    background: var(--whatsapp-green);
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  }
  
  .video-container video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 1rem;
  }
  
  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
  
  @keyframes slideIn {
    from {
      opacity: 0;
      transform: scale(0.8) translateY(50px);
    }
    to {
      opacity: 1;
      transform: scale(1) translateY(0);
    }
  }
  
  /* Features Section */
  .features {
    padding: 5rem 0;
    background: white;
    position: relative;
    z-index: 10;
  }
  
  .section-header {
    text-align: center;
    margin-bottom: 4rem;
  }
  
  .section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
  }
  
  .section-header p {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
  }
  
  .feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--gray-100);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }
  
  .feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--whatsapp-teal), var(--primary-blue));
    transform: scaleX(0);
    transition: transform 0.3s ease;
  }
  
  .feature-card:hover::before {
    transform: scaleX(1);
  }
  
  .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  }
  
  .feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    animation: bounce 2s infinite;
  }
  
  @keyframes bounce {
    0%,
    100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-5px);
    }
  }
  
  .feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gray-900);
  }
  
  .feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
  }
  
  /* How It Works */
  .how-it-works {
    padding: 5rem 0;
    background: var(--gray-50);
  }
  
  .steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
  }
  
  .step {
    text-align: center;
    position: relative;
  }
  
  .step-number {
    width: 60px;
    height: 60px;
    background: var(--whatsapp-teal);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1.5rem;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
  }
  
  .step:hover .step-number {
    transform: scale(1.1);
    background: var(--whatsapp-green);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
  }
  
  .step::after {
    content: "";
    position: absolute;
    top: 30px;
    left: calc(100% - 30px);
    width: 100px;
    height: 2px;
    background: var(--gray-200);
    z-index: 1;
  }
  
  .step:last-child::after {
    display: none;
  }
  
  .step h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
  }
  
  .step p {
    color: var(--gray-600);
    font-size: 0.9rem;
  }
  
  /* Privacy Section */
  .privacy-section {
    padding: 5rem 0;
    background: white;
  }
  
  .privacy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
  }
  
  .privacy-card {
    background: var(--gray-50);
    padding: 2rem;
    border-radius: 1rem;
    border-left: 4px solid var(--whatsapp-teal);
    transition: all 0.3s ease;
  }
  
  .privacy-card:hover {
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
  }
  
  .privacy-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .privacy-card ul {
    list-style: none;
  }
  
  .privacy-card li {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
  }
  
  .privacy-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--whatsapp-teal);
    font-weight: bold;
  }
  
  .privacy-policy-btn {
    background: var(--primary-blue);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    margin-top: 2rem;
    transition: all 0.3s ease;
  }
  
  .privacy-policy-btn:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
  }
  
  /* Footer */
  footer {
    background: var(--gray-900);
    color: white;
    padding: 3rem 0 1rem;
  }
  
  .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
  }
  
  .footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--whatsapp-teal);
  }
  
  .footer-section ul {
    list-style: none;
  }
  
  .footer-section a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.3s ease;
  }
  
  .footer-section a:hover {
    color: var(--whatsapp-green);
  }
  
  .footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 1rem;
    text-align: center;
    color: var(--gray-400);
  }
  
  /* Animations */
  .fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
  }
  
  .fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
  }
  
  /* WhatsApp Chat Bubble Animation */
  .chat-demo {
    position: relative;
    max-width: 400px;
    margin: 3rem auto;
    background: #e5ddd5;
    border-radius: 1rem;
    padding: 1rem;
    animation: slideUp 0.8s ease-out 0.6s both;
  }
  
  .message {
    background: var(--whatsapp-teal);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 1rem;
    margin-bottom: 0.5rem;
    max-width: 80%;
    margin-left: auto;
    position: relative;
    animation: messageSlide 0.5s ease-out;
  }
  
  .message.received {
    background: white;
    color: var(--gray-800);
    margin-left: 0;
    margin-right: auto;
  }
  
  @keyframes messageSlide {
    from {
      opacity: 0;
      transform: scale(0.8) translateY(20px);
    }
    to {
      opacity: 1;
      transform: scale(1) translateY(0);
    }
  }
  
  .typing-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: white;
    border-radius: 1rem;
    max-width: 80px;
    margin-bottom: 0.5rem;
  }
  
  .typing-dot {
    width: 8px;
    height: 8px;
    background: var(--gray-400);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
  }
  
  .typing-dot:nth-child(1) {
    animation-delay: 0s;
  }
  
  .typing-dot:nth-child(2) {
    animation-delay: 0.2s;
  }
  
  .typing-dot:nth-child(3) {
    animation-delay: 0.4s;
  }
  
  @keyframes typing {
    0%,
    80%,
    100% {
      transform: scale(0.8);
      opacity: 0.5;
    }
    40% {
      transform: scale(1.2);
      opacity: 1;
    }
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    .nav-desktop {
      display: none;
    }
  
    .hero h1 {
      font-size: 2.5rem;
    }
  
    .privacy-grid {
      grid-template-columns: 1fr;
    }
  
    .cta-buttons {
      flex-direction: column;
      align-items: center;
    }
  
    .steps::after {
      display: none;
    }
  
    .step::after {
      display: none;
    }
  
    .logo {
      font-size: 1.3rem;
    }
  
    .logo-icon {
      width: 28px;
      height: 28px;
    }
  
    .container {
      padding: 0 1.5rem;
    }
  
    .video-container {
      width: 95%;
      max-height: 80%;
    }
  
    .close-btn {
      top: -15px; /* Adjusted for mobile */
      right: -15px; /* Adjusted for mobile */
      width: 35px;
      height: 35px;
      font-size: 1.3rem;
    }
  }
  
  /* Loading Animation */
  .loading-spinner {
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--whatsapp-teal);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    display: none;
  }
  
  @keyframes spin {
    0% {
      transform: rotate(0deg);
    }
    100% {
      transform: rotate(360deg);
    }
  }
  
  /* Glassmorphism effect */
  .glass {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
  }