/* ========== RESET & BASE ========== */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --blue-primary: #0056b3;
      --blue-dark: #0d47a1;
      --blue-accent: #007bff;
      --white: #ffffff;
      --gray-light: #f8f9fa;
      --shadow: 0 4px 12px rgba(0,0,0,0.1);
      --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: #333;
      background-color: var(--white);
      overflow-x: hidden;
    }

    h1, h2, h3, h4 {
      font-weight: 800;
      line-height: 1.2;
      color: var(--blue-dark);
    }

    img {
      max-width: 100%;
      height: auto;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    /* ========== UTILITIES ========== */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .btn {
      display: inline-block;
      padding: 14px 32px;
      font-weight: 700;
      font-size: 1.1rem;
      border-radius: 50px;
      text-align: center;
      transition: var(--transition);
      cursor: pointer;
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--blue-primary), var(--blue-dark));
      color: white;
      border: none;
    }

    .btn-primary:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 20px rgba(0, 86, 179, 0.4);
    }

    .section {
      padding: 80px 0;
    }

    .section-title {
      text-align: center;
      margin-bottom: 60px;
      font-size: 2.5rem;
      position: relative;
    }

    .section-title::after {
      content: '';
      display: block;
      width: 80px;
      height: 4px;
      background: var(--blue-accent);
      margin: 16px auto;
      border-radius: 2px;
    }

    /* ========== HEADER ========== */
    header {
      background-color: var(--white);
      box-shadow: 0 2px 10px rgba(0,0,0,0.08);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .navbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 0;
    }

    .logo {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--blue-primary);
    }

    .logo span {
      color: var(--blue-accent);
    }

    /* ========== HERO ========== */
    .hero {
      position: relative;
      background: linear-gradient(rgba(13, 71, 161, 0.85), rgba(0, 86, 179, 0.9)), url('https://atomykairosoasis.com/br/atomy-blumenau-santa-catarina/img/2-mulheres-atomy_11zon.webp') center/cover no-repeat;
      color: white;
      text-align: center;
      padding: 120px 20px;
      min-height: 80vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
    }

    .hero h1 {
      font-size: 3.2rem;
      margin-bottom: 20px;
      color: white;
      text-shadow: 0 2px 6px rgba(0,0,0,0.3);
    }

    .hero p {
      font-size: 1.4rem;
      max-width: 800px;
      margin: 0 auto 40px;
      color: rgba(255,255,255,0.95);
    }

    .video-presenter {
      width: 100%;
      max-width: 800px;
      margin: 40px auto;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 12px 30px rgba(0,0,0,0.3);
      background: #000;
    }

    .video-placeholder {
      background: #000 url('https://atomykairosoasis.com/br/atomy-blumenau-santa-catarina/img/ako-voce-ja-conhece-atomy_11zon.webp') center/cover no-repeat;
      height: 450px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 1.2rem;
    }

    .btn-group {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
    }

    /* Fade-down animated buttons */
    .btn-fade {
      opacity: 0;
      transform: translateY(30px);
      animation: fadeDown 0.8s forwards;
    }

    .btn-fade:nth-child(1) { animation-delay: 0.2s; }
    .btn-fade:nth-child(2) { animation-delay: 0.4s; }
    .btn-fade:nth-child(3) { animation-delay: 0.6s; }

    @keyframes fadeDown {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    /* ========== SECTIONS ========== */
    .features {
      background-color: var(--gray-light);
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
    }

    .feature-card {
      background: white;
      border-radius: 16px;
      padding: 30px;
      text-align: center;
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

    .feature-card:hover {
      transform: translateY(-8px);
    }

    .feature-icon {
      width: 80px;
      height: 80px;
      margin: 0 auto 20px;
      background: linear-gradient(135deg, var(--blue-primary), var(--blue-accent));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .feature-icon img {
      width: 48px;
      filter: brightness(0) invert(1);
    }

    .products-grid, .business-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 40px;
    }

    .product-card, .business-card {
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

    .product-card:hover, .business-card:hover {
      transform: scale(1.03);
    }

    .card-img {
      height: 220px;
      background-size: cover;
      background-position: center;
    }

    .card-content {
      padding: 24px;
      background: white;
    }

    /* ========== CONTACT ========== */
    .contact {
      background: linear-gradient(135deg, var(--blue-dark), var(--blue-primary));
      color: white;
      text-align: center;
    }

    .contact h2 {
      color: white;
    }

    .contact-form {
      max-width: 600px;
      margin: 40px auto 0;
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-input {
      width: 100%;
      padding: 14px 20px;
      border-radius: 50px;
      border: none;
      font-size: 1rem;
      outline: none;
    }

    .social-links {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-top: 40px;
    }

    .social-icon {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: rgba(255,255,255,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      transition: var(--transition);
    }

    .social-icon:hover {
      background: white;
      color: var(--blue-primary);
      transform: scale(1.1);
    }

    footer {
      background: #0a2e5c;
      color: rgba(255,255,255,0.7);
      text-align: center;
      padding: 30px 0;
    }

    /* ========== FLOATING WHATSAPP ========== */
    .whatsapp-float {
      position: fixed;
      width: 60px;
      height: 60px;
      bottom: 30px;
      right: 30px;
      background-color: #25d366;
      color: white;
      border-radius: 50px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
      z-index: 9999;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      animation: pulse 2s infinite;
      transition: var(--transition);
    }

    .whatsapp-float:hover {
      transform: scale(1.1) rotate(12deg);
      background-color: #128C7E;
    }

    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
      70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
      100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
    }

    /* ========== RESPONSIVE ========== */
    @media (max-width: 768px) {
      .hero h1 { font-size: 2.4rem; }
      .hero p { font-size: 1.2rem; }
      .section { padding: 60px 0; }
      .section-title { font-size: 2rem; }
      .btn { padding: 12px 24px; font-size: 1rem; }
    }

    @media (max-width: 480px) {
      .hero { padding: 80px 15px; }
      .btn-group { flex-direction: column; align-items: center; }
    }