:root {
    color-scheme: light;
    --verde: #007a33;
    --verde-escuro: #06331c;
    --verde-medio: #0a4a28;
    --verde-suave: #e7f5ec;
    --fundo: #f7f7f8;
    --papel: #ffffff;
    --tinta: #1a1a1a;
    --tinta-suave: #5f6b64;
    --linha: #e2e8e4;
    --aviso: #fff6d8;
    --aviso-linha: #e2c56a;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    height: 100vh;
    background: var(--fundo);
    color: var(--tinta);
    font: 16px/1.5 "Segoe UI", sans-serif;
}

.app {
    display: flex;
    height: 100vh;
}

.barra {
    width: 260px;
    flex: 0 0 260px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px 12px;
    background: var(--verde-escuro);
    color: #f3fff6;
}

.marca {
    margin: 4px 8px 0;
    font-weight: 700;
    letter-spacing: 0.04em;
}

#nova {
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 10px;
    background: transparent;
    color: inherit;
    padding: 10px 12px;
    text-align: left;
    cursor: pointer;
}

#nova:hover { background: var(--verde-medio); }

.rodape-barra {
    margin: auto 8px 0;
    font-size: 12px;
    opacity: 0.75;
}

.palco {
    flex: 1;
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    background: var(--papel);
}

.topo {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    padding: 16px 24px 0;
}

.topo h1 {
    margin: 0;
    font-size: 18px;
}

.topo p {
    margin: 4px 0 0;
    color: var(--tinta-suave);
    font-size: 14px;
}

.conversa {
    flex: 1;
    min-height: 0;
    overflow: auto;
    overflow-anchor: none;
    padding: 24px 16px 12px;
}

.miolo {
    width: min(760px, 100%);
    margin: 0 auto;
}

.vazio {
    margin-top: 12vh;
    text-align: center;
}

.vazio h2 {
    margin: 0 0 8px;
    font-size: 28px;
    font-weight: 600;
}

.vazio p { color: var(--tinta-suave); }

.atalhos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 18px;
}

.atalhos button,
.formulario button {
    border: 0;
    border-radius: 999px;
    background: var(--verde);
    color: white;
    padding: 8px 14px;
    cursor: pointer;
}

.atalhos button { background: var(--verde-suave); color: var(--verde-escuro); }

.msg { margin: 0 0 18px; }

.msg p { margin: 0; white-space: pre-wrap; }

.msg-usuario {
    display: flex;
    justify-content: flex-end;
}

.msg-usuario p {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 16px 16px 4px 16px;
    background: var(--verde);
    color: white;
}

.msg-rof p:first-child { padding-top: 2px; }

.item {
    margin-top: 10px;
    padding: 12px 14px;
    border: 1px solid var(--linha);
    border-left: 4px solid var(--verde);
    border-radius: 12px;
    background: var(--verde-suave);
}

.item h2 { margin: 0; font-size: 15px; }

.meta {
    margin: 2px 0 8px;
    color: var(--tinta-suave);
    font-size: 13px;
}

.formulario {
    width: min(760px, calc(100% - 32px));
    margin: 0 auto 18px;
    display: flex;
    gap: 8px;
    align-items: flex-end;
    padding: 8px;
    border: 1px solid var(--linha);
    border-radius: 24px;
    background: var(--papel);
    box-shadow: 0 2px 10px rgba(6, 51, 28, 0.06);
}

textarea {
    flex: 1;
    resize: none;
    border: 0;
    max-height: 160px;
    padding: 8px 10px;
    font: inherit;
    outline: none;
}

.oculto {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
}

@media (max-width: 720px) {
    body { height: 100dvh; }
    .app { flex-direction: column; height: 100dvh; }
    .barra {
        width: auto;
        flex: 0 0 auto;
        flex-direction: row;
        align-items: center;
        gap: 8px;
        padding: 10px 12px;
    }
    .marca { margin: 0; }
    #nova { margin-left: auto; padding: 8px 12px; }
    .rodape-barra, .topo { display: none; }
    .conversa { padding: 16px 12px 8px; }
    .vazio { margin-top: 6vh; }
    .vazio h2 { font-size: 22px; }
    .vazio p { font-size: 15px; }
    .atalhos { flex-direction: column; align-items: stretch; }
    .atalhos button {
        border-radius: 18px;
        padding: 12px 14px;
        text-align: center;
    }
    .msg-usuario p { max-width: 88%; }
    .formulario {
        width: auto;
        margin: 0 12px calc(12px + env(safe-area-inset-bottom));
    }
}