:root {
      --bg: #f1f4f9;
      --text: #1a1a1a;
      --card-bg: transparent;
      --accent: #4285f4;
      --accent-hover: #3367d6;
      --border-color: #dcdcdc;
      --radius: 16px;
    }

    body {
      margin: 0;
      font-family: 'Inter', sans-serif;
      background: var(--bg);
      color: var(--text);
    }

    header {
      background: #000;
      color: #fff;
      padding: 14px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    header h1 {
      font-size: 1.3rem;
    }

    header .user-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    header .user-info button {
      background: none;
      border: none;
      color: #fff;
      font-size: 1.25rem;
      cursor: pointer;
    }

    .tabs {
      display: flex;
      gap: 8px;
      padding: 16px;
      flex-wrap: wrap;
    }

    .tabs button {
      padding: 10px 16px;
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      cursor: pointer;
      font-weight: 600;
    }

    .tabs button.active {
      background: var(--accent);
      color: #fff;
    }

    main {
      padding: 16px;
    }

    .card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 20px;
      margin-bottom: 24px;
      border: 1px solid var(--border-color);
    }

    .card h3 {
      margin: 0 0 16px;
      border-left: 4px solid var(--accent);
      padding-left: 12px;
      font-size: 1.2rem;
    }

    .card img.profile {
      width: 90px;
      height: 90px;
      border-radius: 50%;
      border: 3px solid var(--accent);
      margin-bottom: 12px;
      object-fit: cover;
      box-shadow: 0 6px 18px rgba(34, 60, 80, 0.12);
      transition: transform 160ms ease, box-shadow 160ms ease;
    }

    .card img.profile:hover {
      transform: translateY(-4px) scale(1.02);
      box-shadow: 0 10px 26px rgba(34, 60, 80, 0.18);
    }

    /* Recent photos gallery */
    .recent-gallery {
      display: flex;
      gap: 10px;
      align-items: center;
      margin-top: 6px;
      flex-wrap: wrap;
    }

    .recent-item {
      width: 64px;
      height: 64px;
      border-radius: 8px;
      overflow: hidden;
      border: 2px solid transparent;
      cursor: pointer;
      transition: transform 120ms ease, border-color 120ms ease;
      background: linear-gradient(180deg, #fff, #f6f9ff);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .recent-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .recent-item:hover {
      transform: translateY(-4px);
      border-color: var(--accent);
    }

    /* Make interface slightly narrower and centered */
    @media(min-width:900px) {
      main {
        max-width: 980px;
        margin: 0 auto;
      }
    }

    /* ----------------------------
   Enhanced visual polish
   ---------------------------- */

    :root {
      --bg-grad-start: #f7f9fc;
      --bg-grad-end: #eef3fb;
      --card-bg: #ffffff;
      --muted: #6b7280;
      --accent-2: #2b6ef6;
      --glass: rgba(255, 255, 255, 0.6);
    }

    body {
      background: linear-gradient(180deg, var(--bg-grad-start), var(--bg-grad-end));
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    .card {
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), var(--card-bg));
      border: 1px solid rgba(18, 38, 63, 0.06);
      box-shadow: 0 6px 18px rgba(34, 60, 80, 0.06);
      padding: 18px;
    }

    .tabs {
      gap: 10px;
      padding: 18px;
      background: transparent;
      align-items: center;
    }

    .tabs button {
      background: transparent;
      border-radius: 12px;
      padding: 10px 14px;
      border: 1px solid transparent;
      box-shadow: none;
      color: var(--muted);
      transition: all 160ms ease;
      font-weight: 600;
    }

    .tabs button.active {
      background: linear-gradient(90deg, var(--accent), var(--accent-2));
      color: #fff;
      box-shadow: 0 6px 16px rgba(43, 110, 246, 0.16);
    }

    button.save,
    button.clear,
    .btn-send,
    .disconnect {
      border: none;
      padding: 10px 14px;
      border-radius: 10px;
      cursor: pointer;
      font-weight: 700;
    }

    button.save {
      background: linear-gradient(90deg, var(--accent), var(--accent-2));
      color: #fff
    }

    button.clear {
      background: #f44336;
      color: #fff
    }

    .btn-send {
      background: var(--accent);
      color: #fff
    }

    .disconnect {
      background: #fff;
      border: 1px solid rgba(0, 0, 0, 0.06);
      color: #333
    }

    input[type="text"],
    input[type="email"],
    input[type="password"],
    textarea {
      background: #fbfdff;
      border: 1px solid rgba(18, 38, 63, 0.06);
      padding: 10px;
      border-radius: 10px;
      width: 100%;
    }

    .message-list {
      border-radius: 12px;
      overflow: hidden
    }

    .message-item {
      padding: 14px 18px
    }

    .message-item.unread {
      background: linear-gradient(90deg, rgba(66, 133, 244, 0.06), rgba(66, 133, 244, 0.02));
    }

    .message-modal-content {
      max-width: 680px;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 18px 40px rgba(8, 15, 30, 0.18);
    }

    .message-modal-header {
      background: linear-gradient(90deg, var(--accent), var(--accent-2));
      color: #fff;
      padding: 18px;
      display: flex;
      gap: 12px;
      align-items: center
    }

    .message-modal-avatar {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      object-fit: cover;
      border: 2px solid rgba(255, 255, 255, 0.18)
    }

    .message-modal-body {
      padding: 18px;
      background: #fff;
      color: #111
    }

    .message-modal-footer {
      padding: 12px 18px;
      background: #fbfdff;
      text-align: right
    }

    /* responsive tweaks */
    @media(max-width:720px) {
      .tabs {
        padding: 12px;
        gap: 6px
      }

      header h1 {
        font-size: 1.05rem
      }

      .card {
        padding: 14px
      }

      .recent-item {
        width: 56px;
        height: 56px
      }
    }

    /* subtle utility */
    .muted {
      color: var(--muted);
    }

    .center {
      text-align: center
    }


    .card input {
      display: block;
      width: 100%;
      margin-top: 6px;
      padding: 8px;
      font-size: 1rem;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-bottom: 10px;
    }

    ul {
      list-style: none;
      padding: 0;
      margin: 0;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      max-height: 300px;
      overflow-y: auto;
    }

    ul li {
      padding: 12px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    ul li span {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    ul li i {
      color: var(--accent);
    }

    ul li small {
      display: block;
      color: #777;
      margin-top: 4px;
    }

    .tag-sistema {
      background: #111;
      color: white;
      font-size: 0.7rem;
      padding: 2px 6px;
      border-radius: 6px;
      margin-left: 4px;
    }

    button.clear,
    button.save {
      margin-top: 12px;
      background: var(--accent);
      color: white;
      border: none;
      padding: 10px;
      border-radius: 10px;
      font-weight: 600;
      cursor: pointer;
    }

    button.clear:hover,
    button.save:hover {
      background: var(--accent-hover);
    }

    ul li.app-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 14px 16px;
      margin-bottom: 16px;
      background: transparent;
      transition: 0.2s ease;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
    }

    ul li.app-card:hover {
      background: rgba(66, 133, 244, 0.05);
    }

    .app-card strong {
      font-size: 1rem;
    }

    .app-card small {
      display: block;
      font-size: 0.85rem;
      color: #555;
      margin-top: 2px;
    }

    .app-card .disconnect {
      margin-top: 10px;
      padding: 8px 14px;
      background: #ff4d4d;
      color: white;
      border: none;
      border-radius: 8px;
      font-weight: 600;
      font-size: 0.9rem;
      cursor: pointer;
      transition: 0.2s ease;
    }

    .app-card .disconnect:hover {
      background: #cc0000;
    }

    .app-card ul.permissions {
      margin-top: 6px;
      padding-left: 20px;
    }

    .app-card ul.permissions li {
      font-size: 0.85rem;
      color: #333;
      margin-bottom: 2px;
    }

    .app-card code {
      font-size: 0.8rem;
      background: #eee;
      padding: 2px 6px;
      border-radius: 6px;
    }

    /* Estilos específicos para a lista de usuários */
    .user-card {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 12px;
      border-radius: var(--radius);
      transition: background 0.2s;
    }

    .user-card:hover {
      background: rgba(66, 133, 244, 0.05);
    }

    .user-card img {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      object-fit: cover;
      border: 2px solid var(--accent);
    }

    .user-info-container {
      flex: 1;
    }

    .user-name {
      font-weight: 600;
      margin-bottom: 4px;
    }

    .user-email {
      font-size: 0.8rem;
      color: #666;
    }

    .user-status {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.75rem;
    }

    .public-badge {
      background: #4CAF50;
      color: white;
      padding: 2px 6px;
      border-radius: 10px;
      font-size: 0.7rem;
    }

    .private-badge {
      background: #f44336;
      color: white;
      padding: 2px 6px;
      border-radius: 10px;
      font-size: 0.7rem;
    }

    .search-container {
      margin-bottom: 16px;
    }

    .search-container input {
      width: 100%;
      padding: 10px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      font-size: 0.95rem;
    }

    .filter-buttons {
      display: flex;
      gap: 8px;
      margin-bottom: 16px;
    }

    .filter-buttons button {
      padding: 8px 12px;
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      cursor: pointer;
      font-size: 0.85rem;
    }

    .filter-buttons button.active {
      background: var(--accent);
      color: white;
    }

    /* Estilos específicos para a inbox de mensagens */
    .message-list {
      list-style: none;
      padding: 0;
      margin: 0;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
    }

    .message-item {
      padding: 16px;
      border-bottom: 1px solid var(--border-color);
      transition: background 0.2s ease;
    }

    .message-item:last-child {
      border-bottom: none;
    }

    .message-item:hover {
      background-color: rgba(66, 133, 244, 0.05);
    }

    .message-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 8px;
    }

    .message-header strong {
      font-size: 1rem;
      color: var(--text);
    }

    .message-header small {
      font-size: 0.8rem;
      color: #666;
    }

    .message-body {
      margin: 0;
      font-size: 0.95rem;
      line-height: 1.5;
      color: #333;
    }

    .message-sender {
      display: block;
      margin-top: 8px;
      font-size: 0.8rem;
      color: #666;
      font-style: italic;
    }

    /* Estilos para quando não há mensagens */
    .message-list .no-messages {
      padding: 20px;
      text-align: center;
      color: #777;
      font-style: italic;
    }

    /* Estilos para mensagens não lidas */
    .message-item.unread {
      background-color: rgba(66, 133, 244, 0.08);
      border-left: 3px solid var(--accent);
    }

    .message-item.unread .message-header strong {
      font-weight: bold;
    }

    .message-sender-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 10px;
    }

    .sender-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      object-fit: cover;
      border: 2px solid var(--accent);
    }

    .sender-details {
      display: flex;
      flex-direction: column;
    }

    .sender-name {
      font-weight: 600;
      font-size: 0.95rem;
    }

    .message-time {
      font-size: 0.8rem;
      color: #666;
    }

    .message-content {
      padding-left: 52px;
      /* Alinhar com o texto abaixo da foto */
    }

    .message-title {
      margin: 0 0 8px 0;
      font-size: 1rem;
      color: var(--text);
    }

    .message-body {
      margin: 0;
      font-size: 0.9rem;
      color: #555;
      line-height: 1.5;
    }

    /* Estilo para mensagens não lidas */
    .message-item.unread {
      background-color: rgba(66, 133, 244, 0.05);
      border-left: 3px solid var(--accent);
      padding-left: 13px;
      /* 16px normal - 3px da borda */
    }

    .message-item.unread .message-title {
      font-weight: bold;
    }

    /* Modal de visualização de mensagem */
    .message-modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.8);
      z-index: 1000;
      padding: 20px;
      overflow-y: auto;
    }

    .message-modal-content {
      background: white;
      max-width: 600px;
      margin: 40px auto;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 5px 30px rgba(0, 0, 0, 0.3);
      animation: modalFadeIn 0.3s ease;
    }

    @keyframes modalFadeIn {
      from {
        opacity: 0;
        transform: translateY(-20px);
      }

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

    .message-modal-header {
      padding: 16px 20px;
      border-bottom: 1px solid #eee;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .message-modal-avatar {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      object-fit: cover;
      border: 2px solid var(--accent);
    }

    .message-modal-sender {
      flex: 1;
    }

    .message-modal-sender-name {
      font-weight: 600;
      font-size: 1.1rem;
    }

    .message-modal-sender-date {
      font-size: 0.85rem;
      color: #666;
    }

    .message-modal-close {
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: #666;
    }

    .message-modal-body {
      padding: 20px;
    }

    .message-modal-title {
      font-size: 1.4rem;
      margin: 0 0 20px 0;
      color: var(--text);
    }

    .message-modal-text {
      font-size: 1rem;
      line-height: 1.6;
      white-space: pre-line;
    }

    .message-modal-footer {
      padding: 16px 20px;
      border-top: 1px solid #eee;
      display: flex;
      justify-content: flex-end;
    }

    .message-modal-reply-btn {
      padding: 8px 16px;
      background: var(--accent);
      color: white;
      border: none;
      border-radius: 6px;
      cursor: pointer;
      font-weight: 600;
    }

    .message-modal-reply-btn:hover {
      background: var(--accent-hover);
    }

    /* Responsividade */
    @media (max-width: 600px) {
      .message-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
      }

      .message-header small {
        align-self: flex-end;
      }
    }