@import url('https://fonts.googleapis.com/css2?family=Google+Sans:wght@400;500;700&family=Roboto:wght@400;500;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Rounded:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200&display=swap');

:root {
    --md-ref-typeface-brand: 'Google Sans', 'Roboto', system-ui, sans-serif;
    --md-ref-typeface-plain: 'Roboto', system-ui, sans-serif;

    --md-sys-shape-corner-none: 0px;
    --md-sys-shape-corner-extra-small: 4px;
    --md-sys-shape-corner-small: 8px;
    --md-sys-shape-corner-medium: 12px;
    --md-sys-shape-corner-large: 16px;
    --md-sys-shape-corner-extra-large: 28px;
    --md-sys-shape-corner-full: 9999px;

    --md-elevation-level1: 0 1px 2px rgba(0,0,0,.3), 0 1px 3px 1px rgba(0,0,0,.15);
    --md-elevation-level2: 0 1px 2px rgba(0,0,0,.3), 0 2px 6px 2px rgba(0,0,0,.15);
    --md-elevation-level3: 0 4px 8px 3px rgba(0,0,0,.15), 0 1px 3px rgba(0,0,0,.3);

    --md-sys-motion-easing-emphasized-decelerate: cubic-bezier(0.05, 0.7, 0.1, 1);
    --md-sys-motion-easing-standard: cubic-bezier(0.2, 0.0, 0, 1.0);
    --md-sys-motion-easing-emphasized-accelerate: cubic-bezier(0.3, 0.0, 0.8, 0.15);
    --md-sys-motion-duration-medium4: 400ms;
    --md-sys-motion-duration-short4: 200ms;

    --md-sys-color-scrim: rgba(0, 0, 0, 0.4);

    --md-switch-track-width: 52px;
    --md-switch-track-height: 32px;
    --md-switch-thumb-size-off: 16px;
    --md-switch-thumb-size-on: 24px;
    --md-co-track-off: var(--md-sys-color-surface-container-highest, var(--md-sys-color-surface-container-high));
    --md-co-outline-off: var(--md-sys-color-outline);
    --md-co-thumb-off: var(--md-sys-color-outline);
    --md-co-track-on: var(--md-sys-color-primary);
    --md-co-thumb-on: var(--md-sys-color-on-primary);
    --md-expressive-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --md-m3e-spring-curve: cubic-bezier(0.43, 1.95, 0.49, 0.95);

    --m3e-elegant-spring: linear(0, 0.046, 0.176, 0.363, 0.569, 0.749, 0.89, 0.984, 1.037, 1.059, 1.06, 1.049, 1.032, 1.014, 1.001, 0.994, 0.992, 0.993, 0.996, 0.999, 1);
    --m3e-switch-duration: 420ms;

    --sidebar-largura: 320px;
    --header-altura: 64px;
    --input-area-altura-max: 240px;
    --max-largura-chat: 820px;
}

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

::selection { background-color: var(--md-sys-color-primary); color: var(--md-sys-color-on-primary); }
::-moz-selection { background-color: var(--md-sys-color-primary); color: var(--md-sys-color-on-primary); }

html, body { overflow: hidden; height: 100%; scrollbar-width: none; -ms-overflow-style: none; }
html::-webkit-scrollbar, body::-webkit-scrollbar { display: none; }

body {
    font-family: var(--md-ref-typeface-plain);
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    line-height: 1.5;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}

.material-symbols-rounded {
    font-family: 'Material Symbols Rounded';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    user-select: none;
}

.md-display-large { font-family: var(--md-ref-typeface-brand); font-size: 3.5625rem; line-height: 4rem; font-weight: 400; letter-spacing: -0.016em; }
.md-headline-medium { font-family: var(--md-ref-typeface-brand); font-size: 1.75rem; line-height: 2.25rem; font-weight: 400; }
.md-headline-small { font-family: var(--md-ref-typeface-brand); font-size: 1.5rem; line-height: 2rem; font-weight: 400; }
.md-title-large { font-family: var(--md-ref-typeface-brand); font-size: 1.375rem; line-height: 1.75rem; font-weight: 400; }
.md-title-medium { font-family: var(--md-ref-typeface-plain); font-size: 1rem; line-height: 1.5rem; font-weight: 500; letter-spacing: 0.009em; }
.md-body-large { font-family: var(--md-ref-typeface-plain); font-size: 1rem; line-height: 1.5rem; font-weight: 400; letter-spacing: 0.031em; }
.md-body-medium { font-family: var(--md-ref-typeface-plain); font-size: 0.875rem; line-height: 1.25rem; font-weight: 400; letter-spacing: 0.016em; }
.md-body-small { font-family: var(--md-ref-typeface-plain); font-size: 0.75rem; line-height: 1rem; font-weight: 400; letter-spacing: 0.025em; }
.md-label-large { font-family: var(--md-ref-typeface-plain); font-size: 0.875rem; line-height: 1.25rem; font-weight: 500; letter-spacing: 0.006em; }
.md-label-medium { font-family: var(--md-ref-typeface-plain); font-size: 0.75rem; line-height: 1rem; font-weight: 500; letter-spacing: 0.04em; }

.on-surface-variant { color: var(--md-sys-color-on-surface-variant); }
.on-primary { color: var(--md-sys-color-on-primary); }
.on-primary-container { color: var(--md-sys-color-on-primary-container); }
.primary { color: var(--md-sys-color-primary); }

.splash-screen {
    position: fixed; inset: 0;
    background-color: var(--md-sys-color-surface, #201A19);
    display: flex; align-items: center; justify-content: center;
    z-index: 9999;
    transition: opacity 300ms ease-out;
}
.splash-hidden { opacity: 0; pointer-events: none; }
md3-expressive-loading-indicator {
    --m3e-loading-indicator-active-indicator-color: var(--md-sys-color-primary, #FFB4AB);
    --m3e-loading-indicator-contained-active-indicator-color: var(--md-sys-color-on-primary-container, #FFDAD6);
    --m3e-loading-indicator-contained-container-color: var(--md-sys-color-primary-container, #93000A);
    --m3e-loading-indicator-size: 4rem;
    --m3e-loading-indicator-container-size: 5rem;
}

.estrutura-app {
    display: flex;
    height: 100vh;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.sidebar {
    width: var(--sidebar-largura);
    flex-shrink: 0;
    background: var(--md-sys-color-surface-container-low, var(--md-sys-color-surface-container));
    border-right: 1px solid var(--md-sys-color-outline-variant);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}

.cabecalho-sidebar {
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--header-altura);
    padding: 0 16px;
    flex-shrink: 0;
    border-bottom: 1px solid transparent;
    transition: border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.logo-empresa {
    max-height: 36px;
    width: auto;
    height: auto;
    object-fit: contain;
    flex-shrink: 0;
}
.titulo-sidebar {
    flex: 1;
    font-family: var(--md-ref-typeface-brand);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
    line-height: 1.3;
}

.botao-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    border-radius: var(--md-sys-shape-corner-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 150ms, color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.botao-icon:hover { background: color-mix(in srgb, var(--md-sys-color-on-surface) 8%, transparent); }
.botao-icon:active { background: color-mix(in srgb, var(--md-sys-color-on-surface) 12%, transparent); }
.botao-icon .material-symbols-rounded { font-size: 22px; }

.botao-nova-conversa {
    display: flex;
    align-items: center;
    gap: 12px;
    width: calc(100% - 24px);
    height: 48px;
    margin: 12px;
    padding: 0 20px;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.botao-nova-conversa:hover { background: color-mix(in srgb, var(--md-sys-color-primary-container) 88%, var(--md-sys-color-on-primary-container) 12%); }
.botao-nova-conversa:active { transform: scale(0.98); }
.botao-nova-conversa .material-symbols-rounded { font-size: 20px; }

.lista-conversas {
    flex: 1;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--md-sys-color-outline-variant) transparent;
    padding: 4px 8px 8px;
}
.lista-conversas::-webkit-scrollbar { width: 8px; }
.lista-conversas::-webkit-scrollbar-track { background: transparent; }
.lista-conversas::-webkit-scrollbar-thumb { background-color: var(--md-sys-color-outline-variant); border-radius: 4px; border: 2px solid transparent; background-clip: padding-box; }
.lista-conversas::-webkit-scrollbar-thumb:hover { background-color: var(--md-sys-color-outline); }

.item-conversa {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    border-radius: var(--md-sys-shape-corner-large);
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-align: left;
    margin-bottom: 2px;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 150ms, color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.item-conversa:hover { background: color-mix(in srgb, var(--md-sys-color-on-surface) 8%, transparent); }
.item-conversa.ativo { background: var(--md-sys-color-secondary-container); color: var(--md-sys-color-on-secondary-container); }
.item-conversa .material-symbols-rounded.icone-conversa { font-size: 20px; opacity: 0.7; flex-shrink: 0; }
.item-conversa .titulo-conversa {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.item-conversa .botao-excluir-conversa {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: inherit;
    opacity: 0;
    border-radius: var(--md-sys-shape-corner-full);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: opacity 150ms, background-color 150ms;
}
.item-conversa:hover .botao-excluir-conversa { opacity: 0.7; }
.item-conversa .botao-excluir-conversa:hover { opacity: 1; background: color-mix(in srgb, currentColor 12%, transparent); }
.item-conversa .botao-excluir-conversa .material-symbols-rounded { font-size: 18px; }

.rodape-sidebar {
    padding: 8px;
    border-top: 1px solid var(--md-sys-color-outline-variant);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.item-rodape {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    height: 48px;
    padding: 0 16px;
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    border-radius: var(--md-sys-shape-corner-full);
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-align: left;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 150ms, color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.item-rodape:hover { background: color-mix(in srgb, var(--md-sys-color-on-surface) 8%, transparent); }
.item-rodape .material-symbols-rounded { font-size: 20px; flex-shrink: 0; }
.item-rodape .texto-item { flex: 1; }
.avatar-usuario {
    width: 32px;
    height: 32px;
    border-radius: var(--md-sys-shape-corner-full);
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--md-ref-typeface-brand);
    font-weight: 500;
    font-size: 0.875rem;
    flex-shrink: 0;
    overflow: hidden;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}

.area-chat {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.barra-superior {
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--header-altura);
    padding: 0 20px;
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    flex-shrink: 0;
    border-bottom: 1px solid transparent;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.barra-superior.rolada {
    background: var(--md-sys-color-surface-container);
    border-bottom-color: var(--md-sys-color-outline-variant);
}
.titulo-barra {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.acoes-barra {
    display: flex;
    gap: 4px;
    align-items: center;
}

.chip-aviso-contexto {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 32px;
    padding: 0 12px;
    border-radius: var(--md-sys-shape-corner-full);
    border: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-tertiary-container, var(--md-sys-color-secondary-container));
    color: var(--md-sys-color-on-tertiary-container, var(--md-sys-color-on-secondary-container));
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.75rem;
    font-weight: 500;
    transition: opacity 200ms ease;
}
.chip-aviso-contexto .material-symbols-rounded { font-size: 16px; }
.chip-aviso-contexto.oculto { display: none; }

.area-mensagens {
    flex: 1;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--md-sys-color-outline-variant) transparent;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.area-mensagens::-webkit-scrollbar { width: 8px; }
.area-mensagens::-webkit-scrollbar-track { background: transparent; }
.area-mensagens::-webkit-scrollbar-thumb { background-color: var(--md-sys-color-outline-variant); border-radius: 4px; border: 2px solid transparent; background-clip: padding-box; }
.area-mensagens::-webkit-scrollbar-thumb:hover { background-color: var(--md-sys-color-outline); }

.lista-mensagens {
    max-width: var(--max-largura-chat);
    margin: 0 auto;
    padding: 32px 24px 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mensagem {
    display: flex;
    gap: 16px;
    animation: mensagemEntrar 300ms var(--md-sys-motion-easing-emphasized-decelerate) backwards;
}
@keyframes mensagemEntrar {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.avatar-mensagem {
    width: 36px;
    height: 36px;
    border-radius: var(--md-sys-shape-corner-full);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.avatar-mensagem.usuario {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}
.avatar-mensagem.assistente {
    background: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
}
.avatar-mensagem .material-symbols-rounded { font-size: 20px; }
.avatar-mensagem.usuario .iniciais {
    font-family: var(--md-ref-typeface-brand);
    font-weight: 500;
    font-size: 0.875rem;
}

.corpo-mensagem {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.autor-mensagem {
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
}
.conteudo-mensagem {
    font-family: var(--md-ref-typeface-plain);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--md-sys-color-on-surface);
    word-wrap: break-word;
    overflow-wrap: break-word;
}
.conteudo-mensagem p { margin: 0 0 12px; }
.conteudo-mensagem p:last-child { margin-bottom: 0; }
.conteudo-mensagem h1, .conteudo-mensagem h2, .conteudo-mensagem h3 {
    font-family: var(--md-ref-typeface-brand);
    font-weight: 500;
    margin: 16px 0 8px;
    line-height: 1.3;
}
.conteudo-mensagem h1 { font-size: 1.5rem; }
.conteudo-mensagem h2 { font-size: 1.25rem; }
.conteudo-mensagem h3 { font-size: 1.125rem; }
.conteudo-mensagem ul, .conteudo-mensagem ol { margin: 0 0 12px; padding-left: 24px; }
.conteudo-mensagem li { margin: 4px 0; }
.conteudo-mensagem strong { font-weight: 700; }
.conteudo-mensagem em { font-style: italic; }
.conteudo-mensagem code {
    font-family: 'Roboto Mono', ui-monospace, monospace;
    font-size: 0.875em;
    background: var(--md-sys-color-surface-container-high);
    padding: 2px 6px;
    border-radius: var(--md-sys-shape-corner-extra-small);
}
.conteudo-mensagem pre {
    background: var(--md-sys-color-surface-container-high);
    padding: 16px;
    border-radius: var(--md-sys-shape-corner-medium);
    overflow-x: auto;
    margin: 0 0 12px;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.conteudo-mensagem pre code {
    background: transparent;
    padding: 0;
    font-size: 0.875rem;
    line-height: 1.5;
}
.conteudo-mensagem blockquote {
    border-left: 3px solid var(--md-sys-color-primary);
    padding-left: 16px;
    margin: 0 0 12px;
    color: var(--md-sys-color-on-surface-variant);
    transition: border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.conteudo-mensagem table {
    border-collapse: collapse;
    width: 100%;
    margin: 0 0 12px;
    font-size: 0.875rem;
}
.conteudo-mensagem th, .conteudo-mensagem td {
    border: 1px solid var(--md-sys-color-outline-variant);
    padding: 8px 12px;
    text-align: left;
    transition: border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.conteudo-mensagem th { background: var(--md-sys-color-surface-container); font-weight: 500; }
.conteudo-mensagem a {
    color: var(--md-sys-color-primary);
    text-decoration: none;
    transition: color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.conteudo-mensagem a:hover { text-decoration: underline; }
.conteudo-mensagem hr {
    border: none;
    border-top: 1px solid var(--md-sys-color-outline-variant);
    margin: 16px 0;
    transition: border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}

.cursor-streaming {
    display: inline-block;
    width: 8px;
    height: 1.1em;
    background: var(--md-sys-color-primary);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: piscarCursor 1s steps(2, start) infinite;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
@keyframes piscarCursor { 50% { opacity: 0; } }

.estado-vazio {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    gap: 16px;
}
.estado-vazio .icone-grande {
    font-size: 64px;
    color: var(--md-sys-color-primary);
    opacity: 0.6;
    transition: color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.estado-vazio .titulo {
    font-family: var(--md-ref-typeface-brand);
    font-size: 1.75rem;
    font-weight: 400;
    color: var(--md-sys-color-on-surface);
}
.estado-vazio .subtitulo {
    font-size: 1rem;
    color: var(--md-sys-color-on-surface-variant);
    max-width: 480px;
}
.sugestoes-iniciais {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: 640px;
    width: 100%;
    margin-top: 16px;
}
.sugestao-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 20px;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-large);
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    text-align: left;
    font-family: var(--md-ref-typeface-plain);
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                transform 150ms;
}
.sugestao-card:hover {
    border-color: var(--md-sys-color-primary);
    transform: translateY(-2px);
}
.sugestao-card .material-symbols-rounded {
    color: var(--md-sys-color-primary);
    font-size: 22px;
    transition: color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.sugestao-card .texto-sugestao {
    font-size: 0.875rem;
    line-height: 1.4;
}

.area-input {
    flex-shrink: 0;
    padding: 16px 24px 24px;
    background: var(--md-sys-color-surface);
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.container-input {
    max-width: var(--max-largura-chat);
    margin: 0 auto;
    display: flex;
    align-items: flex-end;
    gap: 12px;
    background: var(--md-sys-color-surface-container-high);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-extra-large);
    padding: 8px 8px 8px 20px;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.container-input:focus-within {
    border-color: var(--md-sys-color-primary);
    background: var(--md-sys-color-surface-container-highest, var(--md-sys-color-surface-container-high));
}
#inputMensagem {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface);
    font-family: var(--md-ref-typeface-plain);
    font-size: 1rem;
    line-height: 1.5;
    resize: none;
    outline: none;
    max-height: var(--input-area-altura-max);
    padding: 8px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--md-sys-color-outline-variant) transparent;
}
#inputMensagem::-webkit-scrollbar { width: 6px; }
#inputMensagem::-webkit-scrollbar-track { background: transparent; }
#inputMensagem::-webkit-scrollbar-thumb { background-color: var(--md-sys-color-outline-variant); border-radius: 3px; }
#inputMensagem::placeholder { color: var(--md-sys-color-on-surface-variant); }
#inputMensagem:disabled { opacity: 0.5; cursor: not-allowed; }

.botao-enviar {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                opacity 150ms;
}
.botao-enviar:disabled {
    background: var(--md-sys-color-surface-container-highest, var(--md-sys-color-surface-container-high));
    color: var(--md-sys-color-on-surface-variant);
    cursor: not-allowed;
    opacity: 0.6;
}
.botao-enviar:not(:disabled):hover { background: color-mix(in srgb, var(--md-sys-color-primary) 88%, var(--md-sys-color-on-primary) 12%); }
.botao-enviar:not(:disabled):active { transform: scale(0.95); }
.botao-enviar .material-symbols-rounded { font-size: 20px; }

.botao-parar {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}
.botao-parar:not(:disabled):hover { background: color-mix(in srgb, var(--md-sys-color-error-container) 88%, var(--md-sys-color-on-error-container) 12%); }

.rodape-input {
    max-width: var(--max-largura-chat);
    margin: 8px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    padding: 0 4px;
}
.contador-caracteres { transition: color 150ms; }
.contador-caracteres.proximo-limite { color: var(--md-sys-color-error); }
.rodape-input .aviso-ia { display: inline-flex; align-items: center; gap: 4px; }

.tela-auth {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--md-sys-color-surface);
    z-index: 1000;
    padding: 24px;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.tela-auth.oculta { display: none; }

.card-auth {
    width: 100%;
    max-width: 420px;
    background: var(--md-sys-color-surface-container-high);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-extra-large);
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    box-shadow: var(--md-elevation-level2);
    animation: authEntrar 400ms var(--md-sys-motion-easing-emphasized-decelerate) backwards;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
@keyframes authEntrar {
    from { opacity: 0; transform: translateY(24px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.cabecalho-auth {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}
.cabecalho-auth .logo-auth {
    max-height: 56px;
    width: auto;
    height: auto;
    object-fit: contain;
}
.cabecalho-auth .titulo-auth {
    font-family: var(--md-ref-typeface-brand);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--md-sys-color-on-surface);
}
.cabecalho-auth .subtitulo-auth {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.4;
}

.form-auth {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.campo-texto {
    position: relative;
    width: 100%;
}
.campo-texto input {
    width: 100%;
    height: 56px;
    padding: 0 16px;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-small);
    background: transparent;
    color: var(--md-sys-color-on-surface);
    font-family: var(--md-ref-typeface-plain);
    font-size: 1rem;
    outline: none;
    transition: border-color 150ms;
}
.campo-texto input:focus { border-color: var(--md-sys-color-primary); border-width: 2px; padding: 0 15px; }
.campo-texto input:focus + .campo-texto-label,
.campo-texto input:not(:placeholder-shown) + .campo-texto-label {
    top: 0;
    transform: translateY(-50%) scale(0.85);
    color: var(--md-sys-color-primary);
}
.campo-texto-label {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--md-sys-color-on-surface-variant);
    font-family: var(--md-ref-typeface-plain);
    font-size: 1rem;
    pointer-events: none;
    transition: all 150ms ease;
    background: var(--md-sys-color-surface-container-high);
    padding: 0 4px;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                top 150ms ease,
                transform 150ms ease,
                color 150ms ease;
}

.erro-auth {
    font-size: 0.8125rem;
    color: var(--md-sys-color-error);
    min-height: 1.2em;
    line-height: 1.4;
    transition: opacity 150ms;
}

.botao-filled {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 24px;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                transform 150ms;
}
.botao-filled:disabled { opacity: 0.5; cursor: not-allowed; }
.botao-filled:not(:disabled):hover { background: color-mix(in srgb, var(--md-sys-color-primary) 88%, var(--md-sys-color-on-primary) 12%); }
.botao-filled:not(:disabled):active { transform: scale(0.98); }
.botao-filled .material-symbols-rounded { font-size: 20px; }

.toggle-auth {
    text-align: center;
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}
.toggle-auth button {
    background: none;
    border: none;
    color: var(--md-sys-color-primary);
    font-family: inherit;
    font-size: inherit;
    font-weight: 500;
    cursor: pointer;
    padding: 0 4px;
    transition: color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.toggle-auth button:hover { text-decoration: underline; }

.md3-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    width: var(--md-switch-track-width);
    height: var(--md-switch-track-height);
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    flex-shrink: 0;
}
.md3-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.md3-switch__track {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--md-co-track-off);
    border: 2px solid var(--md-co-outline-off);
    border-radius: 100px; box-sizing: border-box;
    transition: background-color 0.25s ease, border-color 0.25s ease;
}
.md3-switch__thumb {
    position: absolute; top: 2px; left: 2px;
    width: var(--md-switch-thumb-size-on); height: var(--md-switch-thumb-size-on);
    background-color: var(--md-co-thumb-off);
    border-radius: 50%; box-sizing: border-box;
    display: flex; justify-content: center; align-items: center;
    transform-origin: left center;
    transform: translateX(4px) scale(0.6666);
    transition: transform var(--m3e-switch-duration) var(--m3e-elegant-spring), background-color 0.25s ease;
}
.md3-switch__icon-holder {
    position: relative; width: 16px; height: 16px;
    display: flex; justify-content: center; align-items: center;
    transition: transform var(--m3e-switch-duration) var(--m3e-elegant-spring);
}
.md3-switch__icon-holder svg {
    position: absolute; width: 14px; height: 14px;
    fill: none; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round;
    transition: opacity 0.2s ease, transform var(--m3e-switch-duration) var(--m3e-elegant-spring);
}
.md3-icon-sun { stroke: var(--md-co-track-off); opacity: 1; }
.md3-icon-moon { stroke: var(--md-co-track-on); opacity: 0; transform: rotate(-45deg) scale(0.5); }
.md3-switch:active .md3-switch__thumb { transform: translateX(4px) scaleX(1.1) scaleY(0.75); }
.md3-switch input:checked + .md3-switch__track { background-color: var(--md-co-track-on); border-color: var(--md-co-track-on); }
.md3-switch input:checked + .md3-switch__track .md3-switch__thumb { background-color: var(--md-co-thumb-on); transform: translateX(20px) scale(1); }
.md3-switch input:checked + .md3-switch__track .md3-switch__icon-holder { transform: rotate(360deg); }
.md3-switch input:checked + .md3-switch__track .md3-icon-sun { opacity: 0; transform: scale(0.5); }
.md3-switch input:checked + .md3-switch__track .md3-icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }
.md3-switch input:checked:active + .md3-switch__track .md3-switch__thumb { transform: translateX(14px) scaleX(1.1) scaleY(0.85); }
.md3-switch input:focus-visible + .md3-switch__track { outline: 2px solid var(--md-co-track-on); outline-offset: 4px; }

.linha-config-tema {
    display: flex;
    align-items: center;
    gap: 16px;
    width: fit-content;
}

.grade-paletas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.opcao-paleta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-large);
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    overflow: hidden;
    position: relative;
    transition: border-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard),
                background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.opcao-paleta:hover { border-color: var(--md-sys-color-primary); }
.opcao-paleta.selecionado {
    background: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
    border-color: transparent;
}
.cor-paleta {
    width: 40px;
    height: 40px;
    border-radius: var(--md-sys-shape-corner-full);
    border: 2px solid var(--md-sys-color-outline-variant);
}

.m3-snackbar {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border-radius: var(--md-sys-shape-corner-extra-small);
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--md-elevation-level3);
    z-index: 4000;
    opacity: 0;
    pointer-events: none;
    max-width: 90vw;
    will-change: transform, opacity;
    transition: opacity 0.25s var(--md-sys-motion-easing-standard),
                transform 0.25s var(--md-expressive-spring);
}
.m3-snackbar.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}
.m3-snackbar__label {
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.875rem;
    font-weight: 400;
    flex: 1;
}
.m3-snackbar__action {
    background: transparent;
    border: none;
    color: var(--md-sys-color-primary);
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-transform: uppercase;
    padding: 4px 8px;
    border-radius: var(--md-sys-shape-corner-extra-small);
    transition: background-color 150ms;
}
.m3-snackbar__action:hover { background: color-mix(in srgb, var(--md-sys-color-primary) 12%, transparent); }

.m3-dialog-surface, .m3-dialog-header, .m3-dialog-body { color: var(--md-sys-color-on-surface); }

.onda-ripple {
    position: absolute;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.12;
    transform: scale(0);
    pointer-events: none;
    animation: ripple-animacao 600ms cubic-bezier(0.2, 0, 0, 1) forwards;
}
@keyframes ripple-animacao { to { transform: scale(4); opacity: 0; } }

dialog.m3-dialog {
    border: none;
    outline: none;
    background-color: var(--md-sys-color-surface-container-high);
    position: fixed;
    inset: 0;
    margin: auto;
    border-radius: var(--md-sys-shape-corner-extra-large);
    padding: 24px;
    width: 100%;
    max-width: 480px;
    box-shadow: 0px 4px 24px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: scale(0.85) translateY(30px);
    will-change: transform, opacity;
    transition: opacity 0.3s var(--md-expressive-spring),
                transform 0.3s var(--md-expressive-spring);
    color: var(--md-sys-color-on-surface);
}
dialog.m3-dialog.dialog-open {
    opacity: 1;
    transform: scale(1) translateY(0);
}
dialog.m3-dialog::backdrop {
    background-color: color-mix(in srgb, var(--md-sys-color-on-surface) 32%, transparent);
    backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity 0.3s linear;
}
dialog.m3-dialog.dialog-open::backdrop { opacity: 1; }

.m3-dialog-header { margin-bottom: 16px; display: flex; align-items: center; gap: 12px; }
.m3-dialog-body { margin-bottom: 24px; }
.m3-dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

.botao-texto {
    background: transparent;
    border: none;
    color: var(--md-sys-color-primary);
    font-family: var(--md-ref-typeface-plain);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--md-sys-shape-corner-small);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: background-color 150ms;
}
.botao-texto:hover { background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent); }

.dialog-config-conteudo {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.secao-config {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.titulo-secao-config {
    font-family: var(--md-ref-typeface-brand);
    font-size: 1rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
}

.card-info-usuario {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--md-sys-color-surface-container);
    border-radius: var(--md-sys-shape-corner-large);
    transition: background-color var(--md-sys-motion-duration-medium4) var(--md-sys-motion-easing-standard);
}
.card-info-usuario .avatar-usuario { width: 48px; height: 48px; font-size: 1.125rem; }
.card-info-usuario .info { flex: 1; min-width: 0; }
.card-info-usuario .info .nome {
    font-family: var(--md-ref-typeface-brand);
    font-size: 1rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.card-info-usuario .info .email {
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

:focused-visible:not(input):not(textarea):not(button) { outline: 3px solid var(--md-sys-color-secondary); outline-offset: 2px; }
:focus:not(:focus-visible) { outline: none; }
button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid var(--md-sys-color-secondary); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

.html-hidden { visibility: hidden; }
html:not([data-tema-pronto]) body { visibility: hidden; }
html:not([data-tema-pronto]) .splash-screen { visibility: visible; }