.chat-page {
    margin: 0;
    height: 100vh;
    overflow: hidden;
}

.chat-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
    max-height: none;
    background-color: var(--cor-fundo-card);
    border-radius: var(--raio-card);
    box-shadow: var(--sombra-card);
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--cor-borda);
}

.chat-header-left {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.chat-header-voltar {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: none;
    border-radius: 50%;
    background-color: var(--cor-primaria);
    color: #ffffff;
    font-size: 17px;
    cursor: pointer;
    font-family: inherit;
    transition: background-color 0.2s ease, transform 0.15s ease;
}

.chat-header-voltar:hover {
    background-color: var(--cor-primaria-escura, #082660);
}

.chat-header-voltar:active {
    transform: scale(0.96);
}

.chat-title {
    margin: 0 0 2px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--cor-primaria);
}

.chat-subtitle {
    margin: 0;
    font-size: 0.78rem;
    color: var(--cor-texto-suave);
    font-weight: 500;
}

.chat-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border-radius: 20px;
    background-color: var(--cor-disponivel-fundo);
    color: var(--cor-disponivel);
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.chat-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--cor-disponivel);
    animation: pulse 2s ease-in-out infinite;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: linear-gradient(180deg, #f7f9fc 0%, var(--cor-fundo-pagina) 100%);
    scroll-behavior: smooth;
}

.chat-message {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    max-width: 88%;
    animation: fadeIn 0.3s ease-out;
}

.chat-message--received {
    align-self: flex-start;
}

.chat-message--sent {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.chat-message--system {
    align-self: center;
    max-width: 100%;
    justify-content: center;
}

.chat-message--system span {
    padding: 4px 12px;
    border-radius: 12px;
    background-color: rgba(10, 41, 97, 0.08);
    color: var(--cor-secao);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.chat-message-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #e2e8f0;
    color: var(--cor-secao);
    font-size: 13px;
    flex-shrink: 0;
}

.chat-message-avatar--operator {
    background-color: var(--cor-primaria);
    color: #ffffff;
}

.chat-message-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.chat-message-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 4px;
}

.chat-message--sent .chat-message-meta {
    flex-direction: row-reverse;
}

.chat-message-author {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--cor-secao);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.chat-message-time {
    font-size: 0.68rem;
    color: var(--cor-texto-suave);
}

.chat-message-text {
    margin: 0;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.9rem;
    line-height: 1.45;
    word-break: break-word;
}

.chat-message--received .chat-message-text {
    background-color: #ffffff;
    color: var(--cor-texto);
    border: 1px solid var(--cor-borda);
    border-bottom-left-radius: 4px;
}

.chat-message--sent .chat-message-text {
    background-color: var(--cor-primaria);
    color: #ffffff;
    border-bottom-right-radius: 4px;
}

.chat-footer {
    padding: 12px 14px 14px;
    border-top: 1px solid var(--cor-borda);
    background-color: var(--cor-fundo-card);
    flex-shrink: 0;
}

.chat-form {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-input {
    flex: 1;
    min-width: 0;
    padding: 11px 14px;
    border: 1px solid var(--cor-borda);
    border-radius: 24px;
    background-color: var(--cor-fundo-input);
    font-size: 0.9rem;
    color: var(--cor-texto);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.chat-input::placeholder {
    color: var(--cor-texto-suave);
}

.chat-input:focus {
    border-color: var(--cor-secundaria);
    box-shadow: 0 0 0 3px rgba(10, 41, 97, 0.1);
}

.chat-send-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: none;
    border-radius: 50%;
    background-color: var(--cor-primaria);
    color: #ffffff;
    font-size: 15px;
    cursor: pointer;
    flex-shrink: 0;
    transition: background-color 0.2s ease, transform 0.15s ease;
}

.chat-send-btn:hover {
    background-color: var(--cor-secundaria-hover);
}

.chat-send-btn:active {
    transform: scale(0.95);
}

.chat-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

::-webkit-scrollbar{
    display: none;
}

/* ── Responsividade ── */

@media (max-width: 1024px) {
    .chat-header {
        flex-wrap: wrap;
        padding: 14px 16px;
        gap: 10px;
    }

    .chat-header-left {
        flex: 1 1 auto;
        min-width: 0;
    }

    .chat-status {
        flex-shrink: 0;
    }
}

@media (max-width: 768px) {
    .chat-header-voltar {
        width: 36px;
        height: 36px;
        font-size: 15px;
    }

    .chat-title {
        font-size: 0.95rem;
    }

    .chat-subtitle {
        font-size: 0.75rem;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .chat-messages {
        padding: 12px 14px;
    }

    .chat-footer {
        padding: 12px 14px 14px;
    }

    .chat-message {
        max-width: 92%;
    }

    .chat-message-avatar {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }

    .chat-message-text {
        padding: 9px 12px;
        font-size: 0.85rem;
    }

    .chat-input {
        padding: 10px 14px;
        font-size: 0.85rem;
    }

    .chat-send-btn {
        width: 38px;
        height: 38px;
        font-size: 14px;
    }
}

@media (max-width: 600px) {
    .chat-panel {
        height: calc(100vh - 60px);
        border-radius: 12px;
    }

    .chat-header {
        padding: 12px;
    }

    .chat-status {
        flex: 1 1 100%;
        justify-content: center;
    }

    .chat-messages {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .chat-message {
        max-width: 94%;
    }

    .chat-form {
        gap: 6px;
    }

    .chat-input {
        padding: 10px 12px;
        font-size: 0.85rem;
    }

    .chat-send-btn {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }
}