:root {
  --marinho: #0d2540;
  --marinho-2: #163a5f;
  --ambar: #e8a33d;
  --ambar-escuro: #b97a1c;
  --fundo: #f4f6f9;
  --painel: #ffffff;
  --lateral: #0d2540;
  --lateral-texto: #d6e0ec;
  --lateral-suave: #8fa4bd;
  --texto: #1b2433;
  --suave: #5b6676;
  --borda: #dfe4eb;
  --bolha-usuario: #e8eef6;
  --perigo: #c0392b;
  --raio: 12px;
  --sombra: 0 1px 2px rgba(16, 32, 56, .06), 0 4px 16px rgba(16, 32, 56, .06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #0f1621;
    --painel: #151f2d;
    --lateral: #0a1320;
    --texto: #e3e9f1;
    --suave: #93a1b3;
    --borda: #253246;
    --bolha-usuario: #1d2b3e;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font: 15px/1.55 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--fundo); color: var(--texto);
}
[hidden] { display: none !important; }
button { font: inherit; cursor: pointer; }

/* ---------- marca ---------- */
.marca { display: flex; align-items: center; gap: 10px; font-size: 17px; letter-spacing: .2px; }
.marca strong { font-weight: 700; }
.marca span { font-weight: 400; opacity: .85; }
.logo {
  width: 32px; height: 32px; border-radius: 8px; flex: none;
  background: var(--marinho) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cpath d='M8 11h16v12H8z' fill='none' stroke='%23e8a33d' stroke-width='2.2'/%3E%3Cpath d='M12 11v12M16 11v12M20 11v12' stroke='%23e8a33d' stroke-width='1.6'/%3E%3C/svg%3E") center/100% no-repeat;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.12);
}
.marca-grande { font-size: 24px; justify-content: center; }
.marca-grande .logo { width: 44px; height: 44px; border-radius: 11px; }

/* ---------- botões ---------- */
.btn { border: 1px solid transparent; border-radius: 9px; padding: 9px 16px; font-weight: 600; transition: .15s; }
.btn-primario { background: var(--ambar); color: #241703; }
.btn-primario:hover { background: #f0b04f; }
.btn-primario:disabled { opacity: .55; cursor: not-allowed; }
.btn-leve { background: transparent; border-color: var(--borda); color: var(--texto); font-weight: 500; padding: 7px 12px; }
.btn-leve:hover { background: var(--bolha-usuario); }
.btn-leve.perigo { color: var(--perigo); }
.btn-link { background: none; border: 0; color: var(--lateral-suave); padding: 4px 6px; }
.btn-link:hover { color: #fff; }
.btn-icone { background: none; border: 0; font-size: 20px; padding: 6px 8px; border-radius: 8px; color: inherit; line-height: 1; }
.btn-icone:hover { background: rgba(127,127,127,.15); }
.so-celular { display: none; }

/* ---------- login ---------- */
.login {
  min-height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 24px 16px;
  background: radial-gradient(1200px 600px at 20% -10%, #1f4a78 0%, transparent 60%), linear-gradient(160deg, #0d2540, #091a2e);
}
.login-card { width: 100%; max-width: 380px; background: var(--painel); border-radius: 16px; padding: 32px 28px; box-shadow: 0 20px 60px rgba(0,0,0,.35); }
.login-sub { text-align: center; color: var(--suave); margin: 10px 0 24px; font-size: 14px; }
.login label { display: block; font-size: 13px; font-weight: 600; color: var(--suave); margin-bottom: 14px; }
.login input {
  display: block; width: 100%; margin-top: 6px; padding: 11px 12px; font: inherit; color: var(--texto);
  background: var(--fundo); border: 1px solid var(--borda); border-radius: 9px;
}
.login input:focus, textarea:focus, .busca:focus { outline: 2px solid var(--ambar); outline-offset: 1px; }
.login .btn { width: 100%; padding: 12px; margin-top: 4px; }
.erro { color: var(--perigo); font-size: 13px; min-height: 18px; margin: 0 0 8px; }
.login-rodape { color: #8fa4bd; font-size: 12px; margin-top: 22px; letter-spacing: .4px; }

/* ---------- layout ---------- */
.app { display: grid; grid-template-columns: 290px 1fr; height: 100%; }
.lateral { background: var(--lateral); color: var(--lateral-texto); display: flex; flex-direction: column; padding: 16px 12px; min-height: 0; }
.lateral-topo { display: flex; align-items: center; justify-content: space-between; padding: 2px 6px 16px; color: #fff; }
.btn-nova { width: 100%; margin-bottom: 12px; }
.busca {
  width: 100%; padding: 8px 11px; border-radius: 9px; border: 1px solid #23415f; background: #10304f; color: #fff; font: inherit; font-size: 14px; margin-bottom: 10px;
}
.busca::placeholder { color: var(--lateral-suave); }
.lista { flex: 1; overflow-y: auto; margin: 0 -4px; padding: 0 4px; }
.lista-grupo { font-size: 11px; text-transform: uppercase; letter-spacing: .8px; color: var(--lateral-suave); margin: 14px 8px 6px; }
.item {
  display: block; width: 100%; text-align: left; background: none; border: 0; color: inherit; padding: 9px 10px; border-radius: 9px; margin-bottom: 2px;
}
.item:hover { background: rgba(255,255,255,.06); }
.item.ativo { background: rgba(232,163,61,.16); box-shadow: inset 3px 0 0 var(--ambar); }
.item-titulo { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 14px; }
.item-meta { display: flex; gap: 6px; align-items: center; font-size: 12px; color: var(--lateral-suave); }
.ponto { width: 7px; height: 7px; border-radius: 50%; background: var(--ambar); animation: pulsar 1.2s infinite; }
.lista-vazia { color: var(--lateral-suave); font-size: 13px; padding: 12px 10px; }
.usuario { display: flex; align-items: center; gap: 10px; border-top: 1px solid #1e3a59; padding: 12px 6px 0; margin-top: 8px; }
.avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--ambar); color: #241703; display: grid; place-items: center; font-weight: 700; font-size: 13px; flex: none; }
.usuario-nome { flex: 1; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.principal { position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 0; height: 100%; }
.topo { display: flex; align-items: center; gap: 10px; padding: 12px 24px; border-bottom: 1px solid var(--borda); background: var(--painel); }
.titulo { flex: 1; font-size: 16px; font-weight: 600; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: text; }
.topo-acoes { display: flex; gap: 8px; }

.conversa { flex: 1; overflow-y: auto; padding: 24px 24px 8px; }
.mensagens, .vazio { max-width: 880px; margin: 0 auto; }
.vazio { text-align: center; padding: 6vh 0 24px; }
.vazio h2 { font-size: 26px; margin: 0 0 8px; color: var(--marinho); }
@media (prefers-color-scheme: dark) { .vazio h2 { color: #fff; } }
.vazio > p { color: var(--suave); max-width: 620px; margin: 0 auto 28px; }
.sugestoes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; text-align: left; }
.sugestao {
  background: var(--painel); border: 1px solid var(--borda); border-radius: var(--raio); padding: 14px 16px; color: var(--texto); box-shadow: var(--sombra); transition: .15s;
}
.sugestao:hover { border-color: var(--ambar); transform: translateY(-1px); }
.sugestao b { display: block; margin-bottom: 3px; }
.sugestao span { color: var(--suave); font-size: 13px; }

/* ---------- mensagens ---------- */
.msg { margin: 0 0 22px; }
.msg-cab { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--suave); margin-bottom: 6px; }
.msg-cab b { color: var(--texto); }
.msg.usuario .corpo { background: var(--bolha-usuario); border-radius: var(--raio); padding: 12px 16px; white-space: pre-wrap; }
.msg.despachante .corpo { background: var(--painel); border: 1px solid var(--borda); border-radius: var(--raio); padding: 18px 22px; box-shadow: var(--sombra); overflow-x: auto; }
.selo { width: 22px; height: 22px; border-radius: 6px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13px; padding: 4px 10px; border-radius: 999px; background: var(--painel);
  border: 1px solid var(--borda); color: var(--texto); text-decoration: none; max-width: 100%;
}
.chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chip button { background: none; border: 0; color: var(--suave); padding: 0 0 0 2px; }
.msg-acoes { display: flex; gap: 8px; margin-top: 8px; }
.msg-acoes .btn-leve { font-size: 13px; padding: 4px 10px; }

.etapas { margin: 0 0 10px; border: 1px dashed var(--borda); border-radius: 10px; padding: 10px 14px; font-size: 13px; color: var(--suave); }
.etapas summary { cursor: pointer; }
.etapas ol { margin: 8px 0 0; padding-left: 20px; }
.etapas li.atual { color: var(--texto); font-weight: 600; }
.trabalhando { display: flex; align-items: center; gap: 10px; color: var(--suave); font-size: 14px; }
.girando { width: 16px; height: 16px; border: 2px solid var(--borda); border-top-color: var(--ambar); border-radius: 50%; animation: girar .8s linear infinite; flex: none; }
@keyframes girar { to { transform: rotate(360deg); } }
@keyframes pulsar { 50% { opacity: .35; } }

/* markdown */
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md h1, .md h2, .md h3 { color: var(--marinho); line-height: 1.3; }
@media (prefers-color-scheme: dark) { .md h1, .md h2, .md h3 { color: #f2c27a; } }
.md h1 { font-size: 20px; } .md h2 { font-size: 18px; } .md h3 { font-size: 16px; }
.md table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: 14px; }
.md th, .md td { border: 1px solid var(--borda); padding: 7px 10px; text-align: left; vertical-align: top; }
.md th { background: var(--bolha-usuario); font-weight: 600; }
.md code { background: var(--bolha-usuario); padding: 1px 5px; border-radius: 5px; font-size: 13px; }
.md a { color: #1f6fb8; }
@media (prefers-color-scheme: dark) { .md a { color: #7db7ec; } }
.md blockquote { border-left: 3px solid var(--ambar); margin: 10px 0; padding: 2px 14px; color: var(--suave); }

/* ---------- compositor ---------- */
.compositor { padding: 8px 24px 16px; }
.compositor > * { max-width: 880px; margin-left: auto; margin-right: auto; }
.anexos { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.caixa {
  display: flex; align-items: flex-end; gap: 6px; background: var(--painel); border: 1px solid var(--borda); border-radius: 14px; padding: 8px; box-shadow: var(--sombra);
}
.caixa:focus-within { border-color: var(--ambar); }
textarea {
  flex: 1; resize: none; border: 0; background: transparent; color: var(--texto); font: inherit; padding: 8px 4px; max-height: 220px; outline: none !important;
}
.anexar { cursor: pointer; align-self: center; }
.enviar { padding: 9px 18px; }
.dica { font-size: 12px; color: var(--suave); text-align: center; margin: 8px auto 0; }

.arrastar {
  position: absolute; inset: 0; background: rgba(13,37,64,.82); display: grid; place-items: center; z-index: 20;
}
.arrastar div { border: 2px dashed var(--ambar); color: #fff; border-radius: 16px; padding: 40px 56px; font-size: 18px; font-weight: 600; }

.aviso {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: #1b2433; color: #fff; padding: 10px 18px; border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0,0,0,.25); z-index: 50; font-size: 14px; max-width: calc(100% - 32px);
}

/* ---------- celular ---------- */
@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .so-celular { display: inline-block; }
  .lateral { position: fixed; inset: 0 auto 0 0; width: min(300px, 86vw); z-index: 30; transform: translateX(-100%); transition: transform .2s; }
  .lateral.aberta { transform: none; }
  .veu { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 25; }
  .topo { padding: 10px 12px; }
  .conversa { padding: 16px 16px 8px; }
  .compositor { padding: 6px 12px 12px; }
  .sugestoes { grid-template-columns: 1fr; }
  .msg.despachante .corpo { padding: 14px 14px; }
  .topo-acoes .btn { padding: 6px 9px; font-size: 13px; }
  .dica { display: none; }
}

/* ---------- impressão ---------- */
@media print {
  .lateral, .compositor, .topo-acoes, .msg-acoes, .btn-icone, .etapas, .aviso { display: none !important; }
  .app { display: block; }
  body, .principal { background: #fff; color: #000; height: auto; }
  .conversa { overflow: visible; padding: 0; }
  .topo { border: 0; padding: 0 0 12px; }
  .titulo::before { content: "Oved Despachante — "; color: #b97a1c; }
  .msg.despachante .corpo { box-shadow: none; border: 0; padding: 0; }
  .msg { break-inside: auto; }
}