@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@700&family=Fredoka+One&display=swap');

    body {
      margin: 0;
      background-color: #2d2f2e;
      font-family: 'Montserrat', sans-serif;
      padding-top: 4.5rem; /* espaço para o header fixo */
    }

    /* HEADER */
    header {
      position: fixed;
      top: 0; left: 0; right: 0;
      height: 4.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 1.5rem;
      box-sizing: border-box;
      z-index: 9999;
      transition: background-color 0.3s ease, backdrop-filter 0.3s ease, border-bottom 0.3s ease;
      background-color: transparent;
      backdrop-filter: none;
      border-bottom: none;
    }

    header.scrolled {
      background-color: rgba(0,0,0,0.5);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    header > div:first-child {
      display: flex;
      align-items: center;
    }

    header img {
      height: 4rem;
      width: auto;
      display: block;
    }

    header > div:last-child {
      display: flex;
      gap: 0.75rem;
    }

    .btn-register,
    .btn-login {
      display: inline-block;
      text-decoration: none;
      font-weight: 700;
      border-radius: 9999px;
      padding: 0.375rem 0.75rem;
      font-size: 0.875rem;
      line-height: 1.25rem;
      font-family: 'Montserrat', sans-serif;
      cursor: pointer;
      transition: background-color 0.3s ease, color 0.3s ease;
      user-select: none;
    }

    .btn-register {
      background-color: #ff4d6d;
      color: #660000;
      border: none;
    }
    .btn-register:hover {
      background-color: #e04362;
    }

    .btn-login {
      border: 1px solid #ff4d6d;
      color: #ff4d6d;
      background-color: transparent;
    }
    .btn-login:hover {
      background-color: #ff4d6d;
      color: #660000;
    }

    /* NAV INFERIOR FIXO */
    .bottom-nav {
      position: fixed;
      bottom: 0;
      width: 100%;
      background: #000; /* Preto 100% */
      display: flex;
      justify-content: space-around;
      align-items: center;
      padding: 0.5rem 0;
      z-index: 1000;
    }

    .nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 0.25rem;
      color: rgba(255,255,255,0.5); /* cor padrão */
      font-size: 0.75rem;
      font-family: 'Fredoka One', cursive;
      cursor: pointer;
      transition: color 0.3s ease, transform 0.2s ease;
      text-decoration: none;
    }

    .nav-item i {
      font-size: 1.5rem;
    }

    /* Hover */
    .nav-item:hover {
      color: #ff4d6d;
      transform: scale(1.1);
    }

    /* Item ativo */
    .nav-item.active {
      color: #ff4d6d;
    }

    /* Esconde em telas grandes */
    @media screen and (min-width: 640px) {
      .bottom-nav {
        display: none;
      }
    }