/* Corells futuristas e profissionais */
 :root {
  --primary-color: #64b5f6; /* Azul futurista */
  --secondary-color: #90a4ae; /* Cinza azulado */
  --background-color: #eceff1; /* Cinza claro suave */
  --card-background: #fff; /* Branco para os cards */
  --border-color: #cfd8dc; /* Cinza claro para bordas */
  --text-color: #263238; /* Cinza escuro para texto principal */
  --light-text: #f0f8ff; /* Branco acinzentado para texto em destaque */
  --accent-color: #00bcd4; /* Ciano para detalhes */
  --gradient-primary: linear-gradient(to right, #64b5f6, #42a5f5); /* Gradiente azul */
  --gradient-secondary: linear-gradient(to right, #90a4ae, #78909c); /* Gradiente cinza */
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.12);
 }

 html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
 }

 body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--background-color);
  display: flex;
  justify-content: center;
  align-items: center;
 }

 .container {
  background-color: var(--card-background);
  border-radius: 12px;
  box-shadow: var(--shadow-medium);
  display: flex;
  flex-direction: column; /* Alterado para column para a tela de login ocupar a altura */
  width: 98%;
  height: 98%;
  margin: 1%;
  overflow: hidden;
 }

 /* Seção de Login */
 #login-container {
  padding: 40px;
  text-align: center;
  /* border-bottom: 1px solid var(--border-color); Remove a borda inferior na tela de login */
  display: flex;
  flex-direction: column;
  justify-content: center; /* Centraliza verticalmente o conteúdo */
  align-items: stretch;
  flex-grow: 1; /* Ocupa toda a altura disponível do container */
 }

 #login-container h2 {
  margin-bottom: 30px;
  color: var(--text-color);
  font-size: 2.5em;
  font-weight: 300;
 }

 #login-container input {
  padding: 15px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  transition: border-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
 }

 #login-container input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(100, 181, 246, 0.4);
 }

 #login-container button {
  padding: 15px 25px;
  background: var(--gradient-primary);
  color: var(--light-text);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1em;
  font-weight: 400;
  transition: background 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
  box-shadow: var(--shadow-light);
 }

 #login-container button:hover {
  background: linear-gradient(to right, #42a5f5, #1e88e5);
  box-shadow: var(--shadow-medium);
 }

 #login-error {
  color: #e53935;
  margin-top: 15px;
  font-weight: 500;
 }

 /* Interface de Chat */
 #chat-interface {
  display: none;
  flex-grow: 1;
  overflow: hidden;
  flex-direction: row; /* Organiza a barra lateral e o chat lado a lado */
 }

 /* Barra Lateral de Contatos */
#contacts-list-container {
  width: 100%;
  max-width: 350px;
  background-color: var(--card-background);
  border-right: 1px solid var(--border-color);
  padding: 30px;
  display: flex;
  flex-direction: column;
  border-radius: 0;
  box-shadow: none;
  overflow: hidden; /* Garante que a lista de contatos role dentro da barra lateral */
 }

 #contacts-list-container h3 {
  color: var(--text-color);
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.2em;
  font-weight: 300;
  text-align: center;
 }

 /* Styles for the tabs at the top (horizontal layout) */
 .contacts-actions.top-tabs {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  margin-bottom: 15px; /* Increased margin for better spacing */
  gap: 4px; /* Slightly increased gap */
 }

 .contacts-actions.top-tabs button {
  flex-grow: 1;
  padding: 8px 10px; /* Slightly increased padding */
  border: 1px solid var(--border-color);
  border-radius: 8px; /* More rounded corners for tabs */
  background-color: var(--card-background);
  color: var(--secondary-color);
  cursor: pointer;
  transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-light);
  font-size: 0.8em; /* Slightly increased font size for tabs */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
 }

 .contacts-actions.top-tabs button i {
  margin-right: 5px; /* Slightly increased icon margin */
 }

 .contacts-actions.top-tabs button.active {
  background: var(--gradient-primary);
  color: var(--light-text);
  border-color: transparent;
  box-shadow: var(--shadow-medium);
 }

 .contacts-actions.top-tabs button:hover {
  background-color: #f5f5f5;
  color: var(--text-color);
  box-shadow: var(--shadow-medium);
 }

 #contact-search {
  padding: 10px; /* Increased padding for search bar */
  margin-bottom: 15px; /* Increased margin below search bar */
  border: 1px solid var(--border-color);
  border-radius: 8px; /* More rounded corners for search bar */
  font-size: 0.9em; /* Slightly increased font size for search bar */
  transition: border-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
 }

 #contact-search:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 8px rgba(0, 188, 212, 0.4);
 }

 #contacts {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-y: auto; /* Esta linha é crucial para permitir a rolagem */
  flex-grow: 1;
  max-height: 500px; /* Adicione uma altura máxima para forçar a rolagem se necessário */
 }

.contact-item {
  padding: 0; /* Remove default padding */
  margin-bottom: 8px; /* Space between contact boxes */
  border-radius: 8px; /* Rounded corners for contact boxes */
  background-color: #e0e0e0; /* Light gray background */
  color: #424242; /* Darker gray text */
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
  font-size: 1em; /* Adjust font size inside the box if needed */
  padding: 10px 15px; /* Padding inside the contact box */
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08); /* Subtle shadow for "lifted" effect */
}


 .contact-item:last-child {
  border-bottom: none;
  margin-bottom: 0; /* Remove margin from the last item */
 }

 .contact-item:hover {
  background-color: #d1d1d1; /* Slightly darker hover color */
  box-shadow: 0 3px 7px rgba(0, 0, 0, 0.1); /* Slightly stronger shadow on hover */
 }

 .contact-name {
  flex-grow: 1;
  color: inherit; /* Inherit color from the contact-item */
  font-weight: 400;
  font-size: 1em;
 }

 .contact-actions button {
  background: none;
  border: none;
  cursor: pointer;
  margin-left: 8px; /* Increased spacing for actions */
  opacity: 0.7;
  transition: opacity 0.2s ease-in-out;
  padding: 6px; /* Slightly increased padding for action buttons */
  border-radius: 8px; /* Rounded corners for action buttons */
  font-size: 0.8em; /* Slightly increased font size for action buttons */
 }

 .contact-actions button:hover {
  opacity: 1;
  background-color: #e0e0e0;
 }

 .favorite-button .favorited {
  color: #ffb300;
 }

 .new-message-bell {
  color: var(--accent-color);
  margin-right: 5px; /* Increased bell margin */
 }

 #create-group-button {
  margin-top: 15px; /* Increased margin above create group button */
  padding: 8px 12px; /* Increased padding */
  border: 1px solid #757575; /* Gray border */
  border-radius: 8px; /* More rounded corners */
  background-color: #757575; /* Gray background */
  color: var(--light-text);
  cursor: pointer;
  transition: background-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-light);
  font-size: 0.8em; /* Slightly increased font size */
 }

 #create-group-button i {
  margin-right: 5px;
 }

 #create-group-button:hover {
  background-color: #616161; /* Darker gray hover */
  box-shadow: var(--shadow-medium);
 }

 /* Área de Chat Atual */
 #current-chat-container,
 #global-chat-container,
 #groups-container {
  flex-grow: 1;
  display: none;
  flex-direction: column;
  justify-content: space-between;
  padding: 15px;
  border-radius: 0;
  overflow: hidden; /* Garante que as mensagens rolem dentro da área de chat */
 }

 .chat-header {
  color: var(--text-color);
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
 }

 .chat-header button {
  background: none;
  border: none;
  cursor: pointer;
  margin-right: 10px;
  font-size: 1em;
  color: var(--secondary-color);
  transition: color 0.2s ease-in-out;
 }

 .chat-header button:hover {
  color: var(--primary-color);
 }

 .chat-header h4,
 #groups-container h3 {
  margin: 0;
  font-size: 1.2em;
  font-weight: 300;
 }

 #messages,
#global-messages {
  flex-grow: 1;
  overflow-y: auto;
  padding-bottom: 20px;
  display: flex; /* Add this if not present */
  flex-direction: column; /* Add this if not present */
  align-items: flex-end; /* You can also try aligning all items to the end here */
}


 .sent-by-me,
 .received {
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 8px;
  max-width: 80%;
  word-break: break-word;
  box-shadow: var(--shadow-light);
  font-size: 1.2em;
 }

.sent-by-me {
  background-color: #e1f5fe;
  color: var(--text-color);
  align-self: flex-end; /* This line is already aligning it to the right */
}


 .received {
  background-color: #f5f5f5;
  color: var(--text-color);
  align-self: flex-start;
 }

 #typing-indicator {
  color: var(--secondary-color);
  font-size: 0.8em;
  margin-bottom: 8px;
  font-style: italic;
 }

 /* Ajustes na área de entrada de mensagens */
 .message-input-area,
 .global-input-area {
  display: flex;
  align-items: center;
  padding: 10px 15px;
  border-top: 1px solid var(--border-color);
 }

 .message-input-area button#choose-image-button,
 .global-input-area button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1em;
  color: var(--secondary-color);
  margin-right: 10px;
  transition: color 0.2s ease-in-out;
  padding: 5px;
 }

 .message-input-area button#choose-image-button:hover,
 .global-input-area button:hover {
  color: var(--accent-color);
 }

 .message-input-area input[type="text"],
 .global-input-area input[type="text"] {
  flex-grow: 1;
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.9em;
  margin-right: 10px;
  transition: border-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
  height: auto;
  min-height: 30px;
 }

 .message-input-area input[type="text"]:focus,
 .global-input-area input[type="text"]:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 8px rgba(0, 188, 212, 0.4);
 }

 .message-input-area button#send-button,
 .global-input-area button#global-send-button {
  background: var(--gradient-primary);
  color: var(--light-text);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.9em;
  font-weight: 400;
  box-shadow: var(--shadow-light);
  height: auto;
  min-height: 30px;
  display: inline-block;
  width: auto;
  margin-left: 5px;
 }
 .message-input-area button#send-button:hover,
 .global-input-area button#global-send-button:hover {
  background: linear-gradient(to right, #42a5f5, #1e88e5);
  box-shadow: var(--shadow-medium);
 }

 .delete-message-button {
  background: none;
  border: none;
  color: #e53935;
  cursor: pointer;
  margin-left: 5px;
  opacity: 0.6;
  transition: opacity 0.2s ease-in-out;
  font-size: 0.8em;
 }

 .delete-message-button:hover {
  opacity: 1;
 }

 /* Seção de Grupos */
 #groups-list {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-y: auto;
  flex-grow: 1;
 }

.group-item {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s ease-in-out;
    font-size: 1.1em;
    font-weight: 500;
    color: var(--text-color); /* Keep the original text color */
    letter-spacing: 0.02em;
    border-radius: 8px; /* Add rounded corners to the item */
    background-color: var(--card-background); /* Give it a background color */
    margin-bottom: 8px; /* Add some space between the items */
    box-shadow: var(--shadow-light); /* Add a subtle shadow for depth */
    padding: 15px 20px; /* Increase padding inside the rounded box */
}

.group-item:last-child {
    border-bottom: none; /* Remove the bottom border as we have spacing now */
    margin-bottom: 0; /* Remove extra margin for the last item */
}

.group-item:hover {
    background-color: #f8f8f8; /* Slightly darker hover effect */
    box-shadow: var(--shadow-medium); /* Increase shadow on hover */
}

/* Style for the group name text specifically if needed */
.group-item span { /* Assuming the group name is within a span or directly inside */
    /* You can add more specific styling here if needed */
}

/* Adjustments for the delete button (optional) */
.group-actions button {
    background: none;
    border: none;
    cursor: pointer;
    margin-left: 10px;
    opacity: 0.7;
    transition: opacity 0.2s ease-in-out;
    padding: 6px;
    border-radius: 6px;
    color: #e53935;
    font-size: 0.9em; /* Adjust size if needed */
}

.group-actions button:hover {
    opacity: 1;
    background-color: #ffebee;
}

 /* Modal de Imagem */
 .modal {
  display: none;
  position: fixed;
  z-index: 10;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.9);
 }

 .modal-content {
  display: block;
  max-width: 90%;
  max-height: 90%;
  margin: 2% auto;
  border-radius: 1px;
  box-shadow: var(--shadow-medium);
 }

 .close-button {
  position: absolute;
  top: 15px;
  right: 20px;
  color: #f0f8ff;
  font-size: 2em;
  font-weight: 300;
  transition: color 0.3s ease-in-out;
  cursor: pointer;
  z-index: 11;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
 }

 .close-button:hover,
 .close-button:focus {
  color: #ccc;
  text-decoration: none;
 }

 /* Modais de Grupo */
 .modal-grupo {
  display: none;
  position: fixed;
  z-index: 10;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
 }

 .modal-content-grupo {
  background-color: var(--card-background);
  margin: 15% auto;
  padding: 20px;
  border: 1px solid var(--border-color);
  width: 85%;
  max-width: 400px;
  border-radius: 12px;
  box-shadow: var(--shadow-medium);
  position: relative;
 }

 .close-button-grupo {
  color: var(--secondary-color);
  float: right;
  font-size: 1.5em;
  font-weight: bold;
  transition: color 0.3s ease-in-out;
 }

 .close-button-grupo:hover,
 .close-button-grupo:focus {
  color: var(--text-color);
  text-decoration: none;
  cursor: pointer;
 }

 .modal-grupo h2,
 .modal-grupo h3 {
  color: var(--text-color);
  margin-bottom: 15px;
  font-weight: 300;
  font-size: 1.1em;
 }

 .modal-grupo input[type=text],
 .modal-grupo input[type=password] {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 10px;
  display: inline-block;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  box-sizing: border-box;
  font-size: 0.9em;
  transition: border-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
 }

 .modal-grupo input[type=text]:focus,
 .modal-grupo input[type=password]:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 8px rgba(0, 188, 212, 0.4);
 }

 .modal-grupo button {
  background: var(--gradient-primary);
  color: var(--light-text);
  padding: 10px 15px;
  border: none;
  cursor: pointer;
  width: auto;
  border-radius: 6px;
  font-size: 0.9em;
  transition: background 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
  box-shadow: var(--shadow-light);
 }

 .modal-grupo button:hover {
  background: linear-gradient(to right, #42a5f5, #1e88e5);
  box-shadow: var(--shadow-medium);
 }

 .modal-grupo .error-message {
  color: #e53935;
  margin-top: 8px;
  font-weight: 500;
  font-size: 0.8em;
 }

 .modal-grupo .buttons-container {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 15px;
 }

 .modal-grupo .buttons-container button[type="button"] {
  background: var(--gradient-secondary);
  padding: 8px 12px;
  font-size: 0.8em;
 }

 .modal-grupo .buttons-container button[type="button"]:hover {
  background: linear-gradient(to right, #78909c, #546e7a);
 }
a {
  text-decoration: none; /* Remove o sublinhado padrão dos links */
}

a:hover {
  /* Você pode adicionar um sublinhado aqui se quiser mostrar no hover */
  /* text-decoration: underline; */
}
 #register-container {
  padding: 40px;
  text-align: center;
  display: flex; /* Usar flexbox para centralizar */
  flex-direction: column;
  justify-content: center; /* Centralizar verticalmente */
  align-items: stretch; /* Ocupar a largura do container pai */
  flex-grow: 1; /* Ocupar o espaço disponível */
 }

 /* O restante dos estilos para #register-container que você já tem */
 #register-container h2 {
  color: var(--text-color);
  margin-bottom: 30px;
  font-size: 2.5em;
  font-weight: 300;
 }

 #register-username,
 #register-password {
  padding: 15px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  transition: border-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
  width: 80%;
  max-width: 300px;
 }

 #register-username:focus,
 #register-password:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(100, 181, 246, 0.4);
 }

 #register-button {
  padding: 15px 25px;
  background: var(--gradient-accent);
  color: var(--light-text);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1em;
  font-weight: 400;
  transition: background 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
  box-shadow: var(--shadow-light);
  margin-bottom: 15px;
 }

 #register-button:hover {
  background: linear-gradient(to right, #00bcd4, #008394);
  box-shadow: var(--shadow-medium);
 }

 #register-error {
  color: #e53935;
  margin-top: 15px;
  font-weight: 500;
 }

 #show-login {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
 }

 #show-login:hover {
  text-decoration: underline;
 }

 #back-to-guest-from-register {
  background: none;
  border: 1px solid var(--secondary-color);
  color: var(--secondary-color);
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9em;
  transition: background-color 0.3s ease-in-out, color 0.3s ease-in-out;
  margin-top: 15px;
 }

 #back-to-guest-from-register:hover {
  background-color: var(--secondary-color);
  color: var(--light-text);
 }