:root {
    --chat-areia: #f2e9da;
    --chat-areia-escura: #dcc7aa;
    --chat-marinho: #123042;
    --chat-marinho-forte: #0a1b27;
    --chat-laranja: #d56a31;
    --chat-verde: #1f7a63;
    --chat-gelo: #f7f4ef;
}

.chat-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.chat-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.1rem 1.5rem;
    background: rgba(8, 22, 31, 0.82);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
}

.chat-topbar__eyebrow {
    font-size: 0.75rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--chat-areia-escura);
}

.chat-topbar__title {
    font-size: 1.25rem;
    font-weight: 800;
}

.chat-topbar__usuario {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.chat-page {
    flex: 1;
    padding: 1.25rem;
}

.chat-grid {
    height: calc(100vh - 110px);
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    gap: 1rem;
}

.chat-lista,
.chat-conteudo,
.login-card {
    background: rgba(247, 244, 239, 0.95);
    color: var(--chat-marinho-forte);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.22);
}

.chat-lista {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-lista__cabecalho,
.chat-conteudo__cabecalho {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.25rem 1rem;
}

.chat-lista__cabecalho h1,
.chat-conteudo__cabecalho h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 800;
}

.chat-lista__cabecalho p,
.chat-conteudo__subtitulo {
    margin: 0.2rem 0 0;
    color: #5d6a75;
}

.chat-lista__itens {
    flex: 1;
    overflow: auto;
    padding: 0 0.85rem 0.85rem;
}

.chat-item {
    width: 100%;
    text-align: left;
    border: 0;
    border-radius: 18px;
    padding: 0.95rem 1rem;
    margin-bottom: 0.75rem;
    background: #fff;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.chat-item:hover,
.chat-item--ativo {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(18, 48, 66, 0.12);
    background: #fffaf3;
}

.chat-item__topo,
.chat-item__rodape {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
}

.chat-item__texto {
    margin: 0.45rem 0 0.65rem;
    color: #5d6a75;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.chat-badge {
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 800;
}

.chat-badge--ia {
    background: rgba(18, 48, 66, 0.12);
    color: var(--chat-marinho);
}

.chat-badge--fila {
    background: rgba(213, 106, 49, 0.16);
    color: var(--chat-laranja);
}

.chat-badge--humano {
    background: rgba(31, 122, 99, 0.16);
    color: var(--chat-verde);
}

.chat-pendente {
    min-width: 1.8rem;
    height: 1.8rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--chat-marinho);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 800;
}

.chat-conteudo {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-aviso {
    margin: 0 1.25rem 1rem;
    padding: 0.85rem 1rem;
    border-radius: 14px;
    background: rgba(213, 106, 49, 0.12);
    color: #8a441f;
    font-weight: 600;
}

.chat-aviso--ia {
    background: rgba(18, 48, 66, 0.1);
    color: var(--chat-marinho);
}

.chat-mensagens {
    flex: 1;
    overflow: auto;
    padding: 0 1.25rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background:
        linear-gradient(180deg, rgba(219, 199, 172, 0.18), transparent 35%),
        repeating-linear-gradient(135deg, rgba(18, 48, 66, 0.03), rgba(18, 48, 66, 0.03) 10px, transparent 10px, transparent 20px);
}

.chat-bolha {
    max-width: min(78%, 720px);
    padding: 0.9rem 1rem 0.7rem;
    border-radius: 18px;
    box-shadow: 0 10px 24px rgba(18, 48, 66, 0.08);
}

.chat-bolha span {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.72rem;
    opacity: 0.72;
}

.chat-bolha--entrada {
    align-self: flex-start;
    background: #fff;
}

.chat-bolha--saida {
    align-self: flex-end;
    background: #f7d9c8;
}

.chat-editor {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.75rem;
    padding: 1rem 1.25rem 1.25rem;
}

.chat-editor textarea {
    resize: none;
    border-radius: 16px;
    min-height: 84px;
}

.chat-vazio,
.chat-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #5d6a75;
}

.chat-vazio {
    min-height: 120px;
    padding: 1.5rem;
}

.chat-vazio--grande,
.chat-loading {
    min-height: 60vh;
    gap: 0.85rem;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.login-card {
    width: min(100%, 440px);
    padding: 2rem;
}

.login-card__marca {
    color: var(--chat-laranja);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.8rem;
    margin-bottom: 0.8rem;
}

.login-card h1 {
    margin-bottom: 0.5rem;
    font-size: 2rem;
    font-weight: 800;
}

.login-card p {
    color: #5d6a75;
    margin-bottom: 1.5rem;
}

@media (max-width: 980px) {
    .chat-page {
        padding: 0.85rem;
    }

    .chat-grid {
        height: auto;
        grid-template-columns: 1fr;
    }

    .chat-lista {
        min-height: 320px;
    }

    .chat-conteudo {
        min-height: 65vh;
    }

    .chat-editor {
        grid-template-columns: 1fr;
    }
}