* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Mulish', sans-serif;
  }
  
  body {
    min-height: 100vh;
    background-color: #234c87;
    color: white;
    display: flex;
  }
  
  .nav-bar {
    width: 5rem;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.658);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    gap: 1rem;
    z-index: 1000;
  }

  .nav-button {
    background: none;
    border: none;
    color: white;
    padding: 0.75rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
  }

  .nav-button:hover {
    background-color: rgba(255, 255, 255, 0.2);
  }

  .nav-button.active {
    background-color: white;
    color: #234c87;
  }

  /* ========================================== */
  /* RESPONSIVIDADE (NAVBAR NO RODAPÉ EM MOBILE) */
  /* ========================================== */
  @media (max-width: 768px) {
    .nav-bar {
      width: 100%;
      height: 4rem;
      flex-direction: row;
      justify-content: space-around;
      bottom: 0;
      top: auto;
      padding: 0;
    }

    .nav-button {
      padding: 0.5rem;
    }
  }

  /* ========================================== */
  /* CONTEÚDO PRINCIPAL */
  /* ========================================== */
  main {
    margin-left: 5rem;
    padding: 2rem;
    padding-top: 6rem;
    position: relative;
    z-index: 1;
    overflow-y: auto;
  }

  @media (max-width: 768px) {
    main {
      margin-left: 0;
      margin-bottom: 4rem;
    }
}
  /* Main Content */
  main {
    flex: 1;
    margin-left: 5rem;
    padding: 2rem;
  }
  
  .page {
    display: none;
  }
  
  .page.active {
    display: block;
  }
  
  /* Home Page */
  .profile-image {
    width: 8rem;
    height: 8rem;
    margin: 0 auto 2rem;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  
  .profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
  }
  
  .card {
    background-color: white;
    color: #234c87;
    padding: 1.5rem;
    border-radius: 1rem;
    transform: translateY(0);
    transition: all 0.3s ease;
  }
  
  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  }
  
  .card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
  }
  
  .card p {
    color: #666;
    margin-bottom: 1rem;
  }
  
  .icons {
    display: flex;
    justify-content: space-around;
  }
  
  .icons a, .icons button {
    color: #234c87;
    padding: 0.75rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    background: none;
    border: none;
    cursor: pointer;
  }
  
  .icons a:hover, .icons button:hover {
    background-color: rgba(35, 76, 135, 0.1);
  }
  
  /* Posts Page */
  .post {
    background-color: white;
    border-radius: 1rem;
    overflow: hidden;
    margin-bottom: 2rem;
    transform: translateY(0);
    transition: all 0.3s ease;
    max-width: 600px;
    margin: 0 auto 2rem;
  }
  
  .post:hover {
    transform: scale(1.02);
  }
  
  .post img {
    width: 100%;
    height: 200px;
    object-fit: cover;
  }
  
  .post-content {
    padding: 1.5rem;
    color: #234c87;
  }
  
  .post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
  }
  
  .post-footer span {
    color: #666;
    font-size: 0.9rem;
  }
  
  .share-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    border: none;
    background-color: #234c87;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  
  .share-button:hover {
    background-color: #1a3a66;
  }
  
  /* Chat Page */
  .chat-container {
    max-width: 500px;
    margin: 0 auto;
    background-color: white;
    border-radius: 1rem;
    padding: 2rem;
    color: #234c87;
  }
  
  .chat-step {
    display: none;
  }
  
  .chat-step.active {
    display: block;
  }
  
  .chat-step h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
  }
  
  .chat-step button {
    width: 100%;
    padding: 1rem;
    margin-bottom: 1rem;
    border: none;
    border-radius: 0.5rem;
    background-color: white;
    color: #234c87;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s ease;
  }
  
  .chat-step button:hover {
    background-color: rgba(35, 76, 135, 0.1);
  }
  
  .channel-button {
    display: flex !important;
    align-items: center;
    gap: 1rem;
  }
  
  .chat-step input,
  .chat-step textarea {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 0.5rem;
    font-size: 1rem;
  }
  
  .chat-step textarea {
    height: 100px;
    resize: vertical;
  }
  
  #chat-complete {
    text-align: center;
  }
  
  #chat-complete button {
    background-color: #234c87;
    color: white;
    text-align: center;
    margin-top: 1rem;
  }
  
  #chat-complete button:hover {
    background-color: #1a3a66;
  }
  
  /* Mobile Responsive */
  @media (max-width: 768px) {
    body {
      flex-direction: column;
    }
  
    .nav-bar {
      width: 100%;
      height: 4rem;
      flex-direction: row;
      bottom: 0;
      top: auto;
      justify-content: space-around;
    }
  
    main {
      margin-left: 0;
      margin-bottom: 4rem;
      padding: 1rem;
    }
  
    .cards-container {
      grid-template-columns: 1fr;
    }
  }