/* =========================================================
1. VARIÁVEIS GLOBAIS E RESET
========================================================= */
:root {
    --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-family-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
    --color-bg-app: #f0f2f5;
    --color-bg-sidebar: #ffffff;
    --color-bg-chat: #ffffff;
    --color-bg-input: #f0f2f5;
    --color-bg-msg-user: #0084ff;
    --color-bg-msg-ia: #e4e6eb;
    --color-bg-hover: #e4e6eb;
    --color-bg-active: #e4e6eb;
    --color-text-primary: #050505;
    --color-text-secondary: #65676b;
    --color-text-user-msg: #ffffff;
    --color-text-accent: #007bff;
    --color-text-button: #ffffff;
    --color-border: #dcdfe3;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --sidebar-width: 280px;
    --header-height: 60px;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --content-max-width: 900px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
    font-family: var(--font-family-sans);
    background-color: var(--color-bg-app);
    color: var(--color-text-primary);
    overflow: hidden;
}

/* =========================================================
2. LAYOUT PRINCIPAL E CONTROLES GLOBAIS
========================================================= */
.chat-container {
    display: flex;
    height: 100vh;
}

.chat-main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100vh;
    background-color: var(--color-bg-chat);
    position: relative;
}

#stop-generating-btn {
    border-radius: 50%;
    padding: 0.6rem;
    background-color: #000;
    color: var(--color-text-button);
}

#stop-generating-btn:hover {
    background-color: #292828;
}

.chat-form-container.is-streaming .send-button {
    display: none;
}

.chat-form-container:not(.is-streaming) #stop-generating-btn {
    display: none;
}

.chat-form-container.is-streaming #stop-generating-btn {
    display: flex;
}

/* =========================================================
3. COMPONENTES DA SIDEBAR (GERAL)
========================================================= */
.sidebar {
    width: var(--sidebar-width);
    background: #f4f4f4;
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: margin-left var(--transition-speed) ease;
    z-index: 200;
    height: 100vh;
}

#history-list {
    list-style: none;
    flex-grow: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
    min-height: 0;
}

#history-list li {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem var(--spacing-md);
    cursor: pointer;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xs);
    transition: background-color 0.2s ease, color 0.2s ease;
    color: var(--color-text-secondary);
    z-index: 1;
}

#history-list li:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}
#history-list li.active {
    background-color: var(--color-bg-active);
    color: var(--color-text-primary);
    font-weight: 500;
}
.history-loading {
    color: var(--color-text-secondary);
    font-style: italic;
    cursor: default !important;
    background: none !important;
}

.sidebar-footer {
    padding: 0.5rem;
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

.sidebar-footer a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-text-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: background-color 0.2s ease, color 0.2s ease;
}
.sidebar-footer a:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

/* =========================================================
   ESTILOS DINÂMICOS PARA BUSCA NO CABEÇALHO DA SIDEBAR
========================================================= */

.sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.7rem;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    overflow: hidden; 
}

.search-wrapper {
    flex-grow: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.search-container {
    display: flex;
    align-items: center;
    flex-grow: 1; 
    background-color: #efefef;
    border-radius: var(--border-radius);
    padding-left: var(--spacing-sm);
    border: 1px solid #8585851f;
    position: relative;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.search-container .search-icon {
    width: 18px;
    height: 18px;
    color: var(--color-text-secondary);
    flex-shrink: 0;
    margin-right: var(--spacing-xs);
}

#search-history-input {
    width: 100%;
    border: none;
    background: transparent;
    outline: none;
    padding: 0.6rem var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--color-text-primary);
}

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

.clear-button {
    padding: 4px;
    margin-right: 4px;
    background-color: #d1d1d1;
    border-radius: 50%;
    color: #65676b;
}
.clear-button:hover {
    background-color: #c2c2c2;
}

#new-chat-btn {
    flex-shrink: 0;
    background-color: #efefef;
    border: 1px solid #8585851f;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.cancel-button {
    background: none;
    border: none;
    color: var(--color-text-accent);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.5rem 0.2rem;
    flex-shrink: 0;
}
.cancel-button:hover {
    text-decoration: underline;
}

/* --- LÓGICA DE ESTADO: .is-searching --- */
/* Remove completamente o botão de nova conversa do layout quando a busca está ativa */
.sidebar-header.is-searching #new-chat-btn {
    display: none;
}
.sidebar-header.is-searching #cancel-search-btn {
    display: block !important;
    color: #000;
}
.sidebar-header.is-searching .search-container {
    background-color: var(--color-bg-chat);
}

/* --- LÓGICA DE ESTADO: .is-typing --- */
.sidebar-header.is-typing #clear-search-btn {
    background: transparent;
    border-radius: 50%;
    padding: 0rem;
    display: flex !important
;
}
.sidebar-header.is-typing #cancel-search-btn {
    display: none !important;
}


/* =========================================================
4. COMPONENTES DO CHAT PRINCIPAL
========================================================= */
.chat-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 var(--spacing-md);
    height: var(--header-height);
    background-color: var(--color-bg-chat);
    border-bottom: transparent;
    z-index: 10;
}
.chat-header h1 {
    font-size: 1.25rem;
    color: var(--color-text-primary);
    margin-left: var(--spacing-sm);
}
.chat-header h1:only-child {
    margin: 0;
}
.header-nav {
    display: flex;
    gap: var(--spacing-md);
    margin-left: auto;
}
.header-nav a {
    display: inline-block;
    background-color: #000;
    color: var(--color-text-button);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.header-nav a:hover {
    background-color: #000000ba;
}

.icon-button {
    background: #e4e6eb36;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease, color 0.2s ease;
}
.icon-button:hover {
    background-color: #f0f2f5;
    color: var(--color-text-primary);
}

#chat-window {
    flex-grow: 1;
    overflow-y: auto;
    min-height: 0;
}
#message-list-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.message {
    margin-bottom: var(--spacing-md);
    padding: 0.8rem var(--spacing-md);
    border-radius: 18px;
    line-height: 1.5;
    word-wrap: break-word;
}
.user-message {
    background: #f4f4f4;
    color: #0d0d0d;
    align-self: flex-end;
    padding: 12px 16px;
    border-radius: 18px;
    max-width: 75%;
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    line-height: 1.5;
}
.ia-message {
    background-color: transparent;
    color: var(--color-text-primary);
    align-self: flex-start;
    border: 1px solid var(--color-border);
}

.chat-input-area {
    flex-shrink: 0;
    background: var(--color-bg-chat);
    padding: var(--spacing-sm) 0;
}
.chat-input-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}
.welcome-message {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: calc(100vh - var(--header-height) - 200px);
    padding: var(--spacing-lg);
    font-size: 1.65rem;
    font-weight: 600;
    background: #000;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--color-text-primary);
    line-height: 1.6;
}
.chat-form-container {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}
#message-input {
    flex-grow: 1;
    border: none;
    background: transparent;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-family: var(--font-family-sans);
    resize: none;
    line-height: 1.5;
    max-height: 200px;
    overflow-y: auto;
    padding: 0.5rem;
}
#message-input:focus { outline: none; }
#message-input::placeholder { color: var(--color-text-secondary); }
.send-button {
    background-color: #000;
    color: var(--color-text-button);
    border-radius: 50%;
    align-self: flex-end;
    padding: 0.6rem;
}
.send-button:hover {
    background-color: #292828;
    color: var(--color-text-button);
}
.send-button:disabled {
    background-color: var(--color-bg-active);
    cursor: not-allowed;
}
.chat-disclaimer {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-lg) 0;
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* =========================================================
5. RESPONSIVIDADE E COMPONENTES AUXILIARES
========================================================= */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 199;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility 0s var(--transition-speed);
}
.overlay.open {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}
.chat-container.sidebar-collapsed .sidebar { margin-left: calc(-1 * var(--sidebar-width)); }
.chat-container.sidebar-collapsed .icon-chevron { transform: rotate(180deg); }

@media (min-width: 769px) {
    #sidebar-toggle-btn .icon-chevron { display: block; }
    #sidebar-toggle-btn .icon-menu { display: none; }
}

@keyframes typing-bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}
.typing-indicator span {
    width: 8px;
    height: 8px;
    background-color: #1976d2;
    border-radius: 100%;
    display: inline-block;
    margin: 0 2px;
    animation: typing-bounce 1.4s infinite ease-in-out both;
}
.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

@media (max-width: 768px) {
    .chat-container { display: block; }

    .sidebar {
        position: fixed;
        height: 100%;
        transform: translateX(-100%);
        transition: transform var(--transition-speed) ease;
        width: 85%;
        max-width: 340px;
    }
    .sidebar.open { transform: translateX(0); }
    
    .chat-container.sidebar-collapsed .sidebar { margin-left: 0; }
    #sidebar-toggle-btn .icon-chevron { display: none; }
    #sidebar-toggle-btn .icon-menu { display: block; }
    
    .chat-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 100;
    }
    .chat-input-area {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        z-index: 100;
    }
    .chat-main {
        position: relative;
        z-index: 1;
        background-color: var(--color-bg-chat);
        padding-top: var(--header-height);
        padding-bottom: 110px; 
    }
    #message-list-container,
    .chat-input-container,
    .chat-disclaimer {
       margin-bottom: 10px;
        margin-top: 20px;
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--color-bg-active);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--color-bg-hover); }

.ia-message pre {
    background-color: #f0f2f5;
    color: #1c1e21;
    border: 1px solid var(--color-border);
    font-family: var(--font-family-mono);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    white-space: pre-wrap;
    word-break: break-all;
    margin: 1em 0;
    font-size: 15px;
}
.ia-message code {
    background-color: rgba(0,0,0,0.08);
    color: #e01e5a;
    font-family: var(--font-family-mono);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 85%;
}

.ia-message pre code {
    background: none;
    color: inherit;
}
.ia-message p { margin-bottom: 1em; }
.ia-message p:last-child { margin-bottom: 0; }
.ia-message ul, .ia-message ol {
    padding-left: 20px;
    margin-bottom: 1em;
}
.ia-message li { margin-bottom: 0.5em; }

/* =========================================================
6. ESTILOS PARA BLOCOS DE CÓDIGO (HIGHLIGHT.JS)
========================================================= */
.code-block-wrapper {
    position: relative;
    margin: 1em 0;
}
.code-block-wrapper pre {
    margin: 0;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}
.code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #000;
    color: #abb2bf;
    padding: 0.8rem var(--spacing-md);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    font-size: 0.85rem;
}
.language-name {
    font-family: var(--font-family-mono);
    text-transform: lowercase;
}
.copy-code-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background-color: transparent;
    border: 1px solid #5c6370;
    color: #abb2bf;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}
.copy-code-btn:hover {
    background-color: #4b5263;
    color: #ffffff;
}
.copy-code-btn svg {
    width: 16px;
    height: 16px;
}
.copy-code-btn.copied {
    background-color: #28a745;
    border-color: #28a745;
    color: #ffffff;
}

/* =========================================================
7. ÁREA DE TRABALHO (WORKSPACE PANE) - OPCIONAL
========================================================= */
/* Estilos para o painel de workspace, se aplicável */


/* =========================================================
8. ESTILOS PARA CONTROLES DO HISTÓRICO (EDITAR/DELETAR)
========================================================= */
#history-list li .history-item-title {
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-right: 0.5rem;
}

.history-item-controls {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    transition: opacity 0.2s ease-in-out;
}

@media (min-width: 769px) {
    .history-item-controls {
        opacity: 0;
    }
    #history-list li:hover .history-item-controls,
    #history-list li.menu-open .history-item-controls,
    #history-list li.editing .history-item-controls {
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .history-item-controls {
        opacity: 1;
    }
}

.toggle-menu-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    color: var(--color-text-secondary);
}
#history-list li:hover .toggle-menu-btn,
.toggle-menu-btn:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}
.toggle-menu-btn svg {
    width: 20px;
    height: 21px;
}

.edit-input {
    width: 100%;
    font-family: inherit;
    font-size: inherit;
    padding: 0;
    border: none;
    background: transparent;
    border-bottom: 2px solid var(--color-text-accent);
    outline: none;
    color: var(--color-text-primary);
}

.action-controls, .edit-controls {
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
}

#history-list li.menu-open .default-controls {
    display: none;
}
#history-list li.menu-open .action-controls {
    display: flex;
}
#history-list li.editing .default-controls,
#history-list li.editing .action-controls {
    display: none;
}
#history-list li.editing .edit-controls {
    display: flex;
}

.action-controls .icon-button {
    color: var(--color-text-secondary);
    transition: background-color 0.2s, color 0.2s;
    padding: 0.35rem;
}
.action-controls .icon-button:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}
.action-controls .icon-button svg {
    width: 18px;
    height: 18px;
}

.save-edit-btn, .cancel-edit-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    color: var(--color-text-secondary);
    transition: background-color 0.2s, color 0.2s;
}

.save-edit-btn:hover {
    background-color: #d4edda;
    color: #155724;
}
.cancel-edit-btn:hover {
    background-color: #f8d7da;
    color: #721c24;
}
.save-edit-btn svg, .cancel-edit-btn svg {
    width: 20px;
    height: 20px;
}

/* Adicione ou substitua esta seção no final do seu style.css */

/*
=========================================================
9. ESTILOS PARA AÇÕES DINÂMICAS DA MENSAGEM (COPIAR TUDO)
=========================================================
*/

/* Torna o contêiner da mensagem IA um ponto de referência para posicionamento */
.ia-message {
    position: relative;
}

/* Contêiner para os botões de ação (Copiar, etc.) */
.message-actions-container {
    position: absolute;
    bottom: -10px; /* Distância da borda inferior */
    display: flex;
    gap: 8px;

    /* >>> NOVO: Esconde o botão por padrão com uma transição suave <<< */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.1s ease-in-out, visibility 0.1s ease-in-out;
}

/* 
   >>> NOVO: Torna o botão visível em duas situações:
   1. Quando o mouse está sobre a mensagem (.ia-message:hover)
   2. Quando a mensagem foi clicada e tem a classe .actions-visible
*/
.ia-message:hover .message-actions-container,
.ia-message.actions-visible .message-actions-container {
    opacity: 1;
    visibility: visible;
}


/* Estilo específico para o botão de copiar a mensagem inteira (sem alterações) */
.copy-full-message-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: #f0f2f5;
    border: 1px solid #ddd;
    color: #65676b;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 13px;
    font-family: var(--font-family-sans);
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.copy-full-message-btn:hover {
    background-color: #e4e6eb;
    border-color: #ccc;
    color: #050505;
}

.copy-full-message-btn svg {
    width: 15px;
    height: 15px;
}

.copy-full-message-btn.copied {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}