/* Variáveis globais do tema do chat */
:root {
    /* Usando as cores do tema do site */
    --primary-color: var(--accent);
    --primary-hover: var(--accent-hover);
    --bg-dark: var(--bg-primary);
    --bg-light: var(--bg-secondary);
    --text-primary: var(--text-primary);
    --text-secondary: var(--text-secondary);
    --chat-outgoing: var(--accent);
    --chat-incoming: var(--bg-tertiary);
    --border-color: var(--border);
}

/* Estilos base */
body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

/* Container principal do chat */
.chat-container {
    display: grid;
    grid-template-columns: 350px 1fr;
    height: calc(85vh - 72px);
    background-color: var(--bg-dark);
    border-radius: 20px;
    overflow: hidden; /* Previne scroll duplo */
}

/* Sidebar do chat */
.chat-sidebar {
    background-color: var(--bg-dark);
    border-right: 1px solid var(--border-color);
    display: flex;
    gap: 15px;
    flex-direction: column;
    border-radius: 20px;
}

/* Cabeçalho da sidebar */
.chat-sidebar-header {
    padding: 10px 16px;
    background-color: var(--bg-dark);
    display: flex;
    align-items: center;
    gap: 15px;
    height: 60px;
}

/* Container de busca */
.search-container {
    padding: 8px 16px;
    background-color: var(--bg-dark);
}

.search-input {
    background-color: var(--bg-dark);
    border-radius: 8px;
    padding: 5px 8px;
    width: 100%;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    outline: none;
}

.search-input::placeholder {
    color: var(--text-secondary);
}

/* Lista de contatos */
.contacts-list {
    flex: 1;
    overflow-y: auto;
}

.contacts-list::-webkit-scrollbar {
    width: 6px;
}

.contacts-list::-webkit-scrollbar-track {
    background: #374151;
    border-radius: 3px;
}

.contacts-list::-webkit-scrollbar-thumb {
    background: #4B5563;
    border-radius: 3px;
}

.contacts-list::-webkit-scrollbar-thumb:hover {
    background: #6B7280;
}

.contacts-list::-webkit-scrollbar-button {
    display: none;
}

.contact-item {
    display: flex;
    padding: 22px 26px;
    gap: 12px;
    cursor: pointer;
    transition: background-color 0.2s;
    border-bottom: 1px solid var(--border-color);
}

.contact-item:hover {
    background-color: var(--bg-tertiary);
}

.contact-item.active {
    background-color: var(--bg-tertiary);
}

/* Avatar do contato */
.contact-avatar {
    width: 49px;
    height: 49px;
    border-radius: 50%;
    background-color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    position: relative;
}

.online-indicator {
    width: 12px;
    height: 12px;
    background-color: var(--accent);
    border-radius: 50%;
    position: absolute;
    bottom: 0;
    right: 0;
    border: 2px solid var(--bg-light);
}

/* Informações do contato */
.contact-info {
    flex: 1;
    min-width: 0;
}

.contact-name {
    font-weight: 500;
    margin-bottom: 4px;
    display: flex;
    justify-content: space-between;
}

.contact-last-message {
    color: var(--text-secondary);
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Área de mensagens com suporte a temas */
.chat-messages-area {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-dark);
    height: 100%;
    position: relative;
    overflow: hidden;
    transition: background-color 0.3s ease;
}

/* Estilos do menu de temas */
.theme-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    min-width: 180px;
    display: none;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.theme-dropdown.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    color: var(--text-primary);
}

.theme-option:hover {
    background-color: var(--bg-tertiary);
    transform: translateX(2px);
}

.theme-option .color-preview {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease;
}

.theme-option:hover .color-preview {
    transform: scale(1.1);
}

.theme-option span:last-child {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Ajuste para o botão de tema */
#theme-button {
    position: relative;
}

#theme-button::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width 0.2s ease;
}

#theme-button:hover::after {
    width: 80%;
}

/* Animação do dropdown */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Ajuste para mensagens com diferentes fundos */
.message.outgoing {
    background-color: var(--chat-outgoing);
    border-bottom-right-radius: 3px;
}

.message.incoming {
    background-color: var(--chat-incoming);
    border-bottom-left-radius: 3px;
}

/* Ajuste para o container de mensagens com diferentes fundos */
.messages-container {
    background-color: transparent;
    transition: background-color 0.3s ease;
}

/* Ajuste para o header do chat */
.chat-header {
    background-color: var(--bg-light);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    height: 60px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0; /* Impede que o header encolha */
    z-index: 10;
}

/* Container de mensagens */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    height: calc(100% - 120px);
    min-height: 0;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    position: relative;
    overscroll-behavior: contain;
}

/* Estilo das mensagens */
.message {
    max-width: 100%;
    padding: 6px 10px;
    border-radius: 10px;
    position: relative;
    display: flex;
    flex-direction: column;
    opacity: 0;
    animation: messageAppear 0.3s ease forwards;
    word-wrap: break-word;
    overflow-wrap: break-word;
    margin: 0;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-content {
    font-size: 0.875rem;
    line-height: 1.3;
    color: var(--text-primary);
    overflow-wrap: break-word;
    word-break: break-word;
    padding: 0;
}

.message.outgoing .message-content {
    color: #FFFFFF;
}

.message-time {
    font-size: 0.625rem;
    color: var(--text-secondary);
    align-self: flex-end;
    margin-top: 2px;
    opacity: 0.7;
    font-weight: 500;
}

.message.outgoing .message-time {
    color: rgba(255, 255, 255, 0.8);
}

/* Indicadores de carregamento mais minimalistas */
.loading-messages,
.no-more-messages {
    text-align: center;
    padding: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    background-color: transparent;
    border-radius: 8px;
    margin: 0.5rem 0;
    animation: fadeIn 0.3s ease;
    opacity: 0.8;
}

.loading-messages i {
    margin-right: 0.5rem;
    color: var(--accent);
    font-size: 0.875rem;
}

/* Ajuste para mensagens em grupo */
.message-wrapper + .message-wrapper.outgoing {
    margin-top: 2px;
}

.message-wrapper + .message-wrapper.incoming {
    margin-top: 2px;
}

/* Efeito hover sutil nas mensagens */
.message:hover {
    filter: brightness(1.02);
    transition: filter 0.2s ease;
}

/* Ajuste para mensagens com links */
.message-content a {
    color: inherit;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    opacity: 0.9;
}

.message-content a:hover {
    opacity: 1;
}

/* Ajuste para mensagens com código ou formatação especial */
.message-content pre,
.message-content code {
    background-color: rgba(0, 0, 0, 0.1);
    padding: 1px 3px;
    border-radius: 3px;
    font-family: 'Consolas', monospace;
    font-size: 0.8125rem;
}

.message.outgoing .message-content pre,
.message.outgoing .message-content code {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Melhorias na scrollbar */
.messages-container::-webkit-scrollbar {
    width: 6px;
    height: 6px; /* Para scroll horizontal se necessário */
}

.messages-container::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: 3px;
}

.messages-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
    transition: background-color 0.2s;
}

.messages-container::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* Área de input */
.chat-input-area {
    background-color: var(--bg-light);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-top: 1px solid var(--border-color);
    position: sticky;
    bottom: 0;
    width: 100%;
    z-index: 10;
    min-height: 60px;
    flex-shrink: 0; /* Impede que o input encolha */
}

.chat-input {
    flex: 1;
    background-color: var(--bg-dark);
    border-radius: 8px;
    padding: 9px 12px;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    outline: none;
    font-size: 0.9375rem;
    min-height: 40px; /* Altura mínima para o input */
}

.chat-input::placeholder {
    color: var(--text-secondary);
}

/* Botões de ação */
.action-button {
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
}

.action-button:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.send-button {
    background-color: var(--accent);
    color: white;
    padding: 12px;
    border-radius: 25%;
    cursor: pointer;
    transition: background-color 0.2s;
}

.send-button:hover {
    background-color: var(--accent-hover);
}

/* Container de mensagem com avatar */
.message-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    max-width: 85%;
    margin: 4px 0;
    clear: both;
}

.message-wrapper.outgoing {
    flex-direction: row-reverse;
    margin-left: auto;
}

.message-wrapper.incoming {
    margin-right: auto;
}

/* Ajuste para mensagens em grupo */
.message-wrapper + .message-wrapper.outgoing {
    margin-top: 8px;
}

.message-wrapper + .message-wrapper.incoming {
    margin-top: 8px;
}


/* Avatar da mensagem */
.message-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 500;
    color: white;
    flex-shrink: 0;
}

/* Botão Adicionar Contato */
.add-contact-button {
    padding: 30px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-dark);
}

.add-contact-button button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    background-color: var(--accent);
    color: white;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.add-contact-button button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.add-contact-button button:active {
    transform: translateY(1px);
}

.add-contact-button i {
    font-size: 1rem;
}


/* --- RESPONSIVIDADE --- */

/* Telas de tablet e mobile (geral) */
@media (max-width: 768px) {
    .chat-container {
        grid-template-columns: 1fr;
        height: 100vh;
        position: relative;
    }

    #chatContactSidebar,
    #chatConversationArea {
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        transition: transform 0.3s ease-in-out;
    }

    #chatContactSidebar {
        transform: translateX(0%);
        z-index: 20;
    }

    #chatConversationArea {
        transform: translateX(100%);
        z-index: 10;
    }

    body.show-chat-conversation #chatContactSidebar {
        transform: translateX(-100%);
    }

    body.show-chat-conversation #chatConversationArea {
        transform: translateX(0%);
        z-index: 30;
    }

    .message-wrapper {
        margin: 6px 0;
        gap: 8px;
    }

    .message-wrapper + .message-wrapper.outgoing,
    .message-wrapper + .message-wrapper.incoming {
        margin-top: 12px;
    }

    .message {
        padding: 8px 12px;
    }

    .message-content {
        font-size: 0.9375rem;
        line-height: 1.4;
    }

    .message-time {
        font-size: 0.6875rem;
        margin-top: 4px;
    }

    .message-avatar {
        width: 28px;
        height: 28px;
        font-size: 0.8125rem;
    }
    
    .add-contact-button {
        padding: 12px;
    }
    
    .add-contact-button button {
        padding: 10px 14px;
    }
}

/* Telas pequenas */
@media (max-width: 480px) {
    .message-wrapper {
        margin: 8px 0;
        gap: 10px;
    }

    .message-wrapper + .message-wrapper.outgoing,
    .message-wrapper + .message-wrapper.incoming {
        margin-top: 16px;
    }

    .messages-container {
        padding: 16px 12px;
    }
}

/* Ajustes finos para Xiaomi Mi 8 Lite e telas similares */
@media (max-width: 412px) {
    /* Reduz espaçamento na lista de contatos para caber mais informação */
    .contact-item {
        padding: 18px 16px;
        gap: 10px;
    }

    /* Reduz o tamanho do avatar na lista de contatos */
    .contact-avatar {
        width: 44px;
        height: 44px;
    }

    /* Reduz espaçamento nos cabeçalhos */
    .chat-header,
    .chat-sidebar-header {
        gap: 8px;
        padding-left: 12px;
        padding-right: 12px;
    }

    /* Otimiza a área de digitação */
    .chat-input-area {
        padding: 8px 12px;
        gap: 6px;
    }

    .send-button {
        padding: 10px;
    }
}