:root {
      --primary: #137772;
      --secondary: #344e41;
      --white: #ffffff;
      --light-gray: #f4f7f6;
      --text: #2b2b2b;
      --error: #e74c3c;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }

    body {
      background-color: var(--white);
      color: var(--text);
    }

    /* HEADER */
    header {
      background-color: var(--white);
      border-bottom: 2px solid var(--light-gray);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    .nav-container {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 2rem;
    }

    .logo-container {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .logo-svg {
      width: 36px;
      height: 36px;
    }

    .logo-text {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--secondary);
    }

    .logo-text span {
      color: var(--primary);
    }

    .cart-btn {
      background-color: var(--primary);
      color: var(--white);
      border: none;
      padding: 0.6rem 1.2rem;
      border-radius: 20px;
      cursor: pointer;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
      transition: background 0.3s;
    }

    .cart-btn:hover {
      background-color: var(--secondary);
    }

    .cart-count {
      background-color: var(--white);
      color: var(--primary);
      border-radius: 50%;
      padding: 2px 7px;
      font-size: 0.8rem;
    }

    /* HERO SECTION */
    .hero {
      background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
      color: var(--white);
      text-align: center;
      padding: 4rem 1rem;
    }

    .hero h1 {
      font-size: 2.5rem;
      margin-bottom: 1rem;
    }

    .hero p {
      font-size: 1.1rem;
      opacity: 0.9;
    }

    /* FILTROS E PRODUTOS */
    .main-container {
      max-width: 1200px;
      margin: 2rem auto;
      padding: 0 1rem;
    }

    .filters {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-bottom: 2rem;
      flex-wrap: wrap;
    }

    .filter-btn {
      background-color: var(--light-gray);
      color: var(--secondary);
      border: 1px solid var(--secondary);
      padding: 0.5rem 1.2rem;
      border-radius: 15px;
      cursor: pointer;
      transition: all 0.3s;
    }

    .filter-btn.active, .filter-btn:hover {
      background-color: var(--primary);
      color: var(--white);
      border-color: var(--primary);
    }

    .products-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 2rem;
    }

    .product-card {
      border: 1px solid #e0e0e0;
      border-radius: 8px;
      overflow: hidden;
      transition: transform 0.3s, box-shadow 0.3s;
      background: var(--white);
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      padding-bottom: 1rem;
    }

    .product-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 15px rgba(0,0,0,0.1);
    }

    .product-frame {
      width: 85%;
      margin-top: 1rem;
      border: 10px solid #1a1a1a;
      box-shadow: 0 4px 10px rgba(0,0,0,0.15);
      background-color: #fcfcfc;
      overflow: hidden;
    }

    .product-img {
      width: 100%;
      height: 280px;
      object-fit: cover;
      display: block;
    }

    .product-info {
      padding: 1rem;
      width: 100%;
    }

    .product-title {
      font-size: 1.1rem;
      color: var(--secondary);
      margin-bottom: 0.3rem;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .product-category {
      font-size: 0.85rem;
      color: var(--primary);
      margin-bottom: 0.8rem;
    }

    .size-selector-container {
      margin-bottom: 1rem;
      text-align: left;
    }

    .size-selector-container label {
      display: block;
      font-size: 0.85rem;
      color: var(--secondary);
      font-weight: 600;
      margin-bottom: 0.3rem;
    }

    .size-select {
      width: 100%;
      padding: 0.5rem;
      border: 1px solid #ccc;
      border-radius: 4px;
      background-color: var(--white);
      color: var(--text);
      font-size: 0.9rem;
      outline: none;
    }

    .product-price {
      font-weight: bold;
      color: var(--secondary);
      font-size: 1.2rem;
      margin-bottom: 1rem;
    }

    .add-to-cart {
      width: 90%;
      background-color: var(--secondary);
      color: var(--white);
      border: none;
      padding: 0.7rem;
      border-radius: 4px;
      cursor: pointer;
      font-weight: 600;
      transition: background 0.3s;
    }

    .add-to-cart:hover {
      background-color: var(--primary);
    }

    /* CARRINHO MODAL */
    .cart-modal {
      display: none;
      position: fixed;
      top: 0;
      right: 0;
      width: 100%;
      max-width: 400px;
      height: 100%;
      background-color: var(--white);
      box-shadow: -4px 0 15px rgba(0,0,0,0.2);
      z-index: 101;
      padding: 1.5rem;
      flex-direction: column;
    }

    .cart-modal.open {
      display: flex;
    }

    .cart-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 2px solid var(--light-gray);
      padding-bottom: 1rem;
      color: var(--secondary);
    }

    .close-cart {
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--secondary);
    }

    .cart-items {
      flex: 1;
      overflow-y: auto;
      margin: 1rem 0;
    }

    .cart-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid #eee;
    }

    .cart-item-info h4 {
      font-size: 0.95rem;
      color: var(--secondary);
    }

    .cart-item-info span.size-tag {
      font-size: 0.8rem;
      color: #666;
      display: block;
      margin: 2px 0;
    }

    .cart-item-info p {
      color: var(--primary);
      font-weight: bold;
      font-size: 0.9rem;
    }

    .remove-btn {
      background: none;
      border: none;
      color: var(--error);
      cursor: pointer;
      font-size: 0.85rem;
    }

    .cart-footer {
      border-top: 2px solid var(--light-gray);
      padding-top: 1rem;
    }

    .cart-total {
      display: flex;
      justify-content: space-between;
      font-size: 1.2rem;
      font-weight: bold;
      color: var(--secondary);
      margin-bottom: 1rem;
    }

    .checkout-btn {
      width: 100%;
      background-color: var(--primary);
      color: var(--white);
      border: none;
      padding: 1rem;
      border-radius: 4px;
      font-size: 1rem;
      font-weight: bold;
      cursor: pointer;
    }

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

    .overlay.open {
      display: block;
    }

    /* TELA DE CHECKOUT MODAL */
    .checkout-modal {
      display: none;
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 90%;
      max-width: 600px;
      max-height: 90vh;
      background-color: var(--white);
      box-shadow: 0 5px 25px rgba(0,0,0,0.3);
      z-index: 102;
      padding: 2rem;
      border-radius: 8px;
      overflow-y: auto;
    }

    .checkout-modal.open {
      display: block;
    }

    .checkout-form {
      display: flex;
      flex-direction: column;
      gap: 1rem;
      margin-top: 1rem;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 0.3rem;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--secondary);
    }

    .form-group input {
      padding: 0.6rem;
      border: 1px solid #ccc;
      border-radius: 4px;
      font-size: 0.95rem;
    }

    .form-group input:focus {
      outline: 2px solid var(--primary);
    }

    .form-row {
      display: flex;
      gap: 1rem;
    }

    .form-row .form-group {
      flex: 1;
    }

    .cep-message {
      font-size: 0.8rem;
      margin-top: 2px;
    }

    .cep-message.loading { color: var(--primary); }
    .cep-message.error { color: var(--error); }
    .cep-message.success { color: #27ae60; }

    .qr-container {
      text-align: center;
      margin: 1.5rem 0;
      padding: 1rem;
      background-color: var(--light-gray);
      border-radius: 8px;
    }

    .qr-container p {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 0.5rem;
    }

    .qr-image {
      max-width: 200px;
      width: 100%;
      height: auto;
      border-radius: 4px;
      border: 1px solid #ddd;
    }