/* snow_brain_v2 — uma tela só. Tema claro/escuro pelo sistema. */
:root {
  --fundo: #f2f3f5; --sup: #fff; --sup2: #e9ebee; --sup3: #dfe2e6;
  --tinta: #14171c; --tinta2: #4b525a; --tinta3: #868d96;
  --linha: #d7dbe0; --linha2: #e6e9ec;
  --acao: #14636b; --acao-sup: #dceef0; --acao-txt: #fff;
  --ia: #6b3f9e; --ia-sup: #ede4f7;
  --backlog: #868d96; --todo: #3f639b; --going: #a66a12; --review: #6e52a0; --done: #2e7a55;
  --perigo: #a8322b;
  --sombra: 0 1px 2px rgba(20,23,28,.06), 0 8px 24px -18px rgba(20,23,28,.4);
  --r: 8px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #0f1216; --sup: #171b21; --sup2: #1f242b; --sup3: #2a3038;
    --tinta: #e8ebef; --tinta2: #a3abb5; --tinta3: #6f7780;
    --linha: #2a3038; --linha2: #232830;
    --acao: #63bcc6; --acao-sup: #102e33; --acao-txt: #0f1216;
    --ia: #b79ae0; --ia-sup: #221a30;
    --backlog: #868d96; --todo: #7fa3d9; --going: #d9a559; --review: #a992d8; --done: #6cbb93;
    --perigo: #e88b84;
    --sombra: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px -18px rgba(0,0,0,.9);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--fundo); color: var(--tinta);
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased; overflow: hidden;
}
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }
:focus-visible { outline: 2px solid var(--acao); outline-offset: 2px; border-radius: 4px; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.esconde { display: none !important; }

/* ───────────────────────── login ───────────────────────── */
#login {
  position: fixed; inset: 0; display: grid; place-items: center;
  background: var(--fundo); z-index: 50; padding: 20px;
}
.caixaLogin {
  width: 100%; max-width: 330px; background: var(--sup); border: 1px solid var(--linha);
  border-radius: 12px; padding: 28px; box-shadow: var(--sombra);
}
.caixaLogin h1 { margin: 0 0 4px; font-size: 19px; letter-spacing: -.02em; }
.caixaLogin p.sub { margin: 0 0 20px; color: var(--tinta3); font-size: 13px; }
.campo { display: block; margin-bottom: 12px; }
.campo span {
  display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .07em;
  color: var(--tinta3); margin-bottom: 5px;
}
.campo input {
  width: 100%; padding: 9px 11px; border: 1px solid var(--linha); border-radius: 6px;
  background: var(--fundo);
}
.botao {
  width: 100%; padding: 10px; border-radius: 6px; background: var(--acao);
  color: var(--acao-txt); font-weight: 600; font-size: 14px;
}
.botao:disabled { opacity: .55; cursor: default; }
.erro { color: var(--perigo); font-size: 13px; margin: 10px 0 0; }

/* ───────────────────────── layout ──────────────────────── */
#app { display: flex; height: 100%; }

/* --- assistente --- */
#rail {
  width: 330px; flex-shrink: 0; background: var(--sup); border-right: 1px solid var(--linha);
  display: flex; flex-direction: column; min-height: 0;
}
.railTopo {
  display: flex; align-items: center; gap: 8px; padding: 12px 14px;
  border-bottom: 1px solid var(--linha2);
}
.railTopo b { font-size: 13px; letter-spacing: -.01em; flex: 1; }
.mini {
  font-size: 11px; color: var(--tinta3); padding: 3px 7px; border-radius: 5px;
}
.mini:hover { background: var(--sup2); color: var(--tinta); }

#conversa { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 100%; border-radius: 10px; padding: 9px 11px; font-size: 13.5px; line-height: 1.5; }
.msg.eu { background: var(--sup2); align-self: flex-end; max-width: 88%; }
.msg.ia { background: var(--acao-sup); }
.msg.erro { background: var(--ia-sup); color: var(--perigo); }
.msg p { margin: 0 0 7px; } .msg p:last-child { margin-bottom: 0; }
.msg ul, .msg ol { margin: 0 0 7px; padding-left: 18px; }
.msg code {
  font-family: ui-monospace, Menlo, monospace; font-size: .87em;
  background: var(--sup3); padding: 1px 4px; border-radius: 3px;
}
.msg pre { background: var(--sup3); padding: 8px; border-radius: 6px; overflow-x: auto; margin: 0 0 7px; }
.msg pre code { background: none; padding: 0; }
.msg h3, .msg h4 { margin: 6px 0 4px; font-size: 14px; }
.msg a { color: var(--acao); }

.passos { display: flex; flex-wrap: wrap; gap: 4px; }
.passo {
  font-size: 10.5px; padding: 2px 7px; border-radius: 20px; background: var(--ia-sup);
  color: var(--ia); font-family: ui-monospace, Menlo, monospace; white-space: nowrap;
}
.pensando { display: inline-flex; gap: 3px; align-items: center; padding: 2px 0; }
.pensando i {
  width: 5px; height: 5px; border-radius: 50%; background: var(--tinta3);
  animation: pulsa 1.1s infinite; display: block;
}
.pensando i:nth-child(2) { animation-delay: .15s; } .pensando i:nth-child(3) { animation-delay: .3s; }
@keyframes pulsa { 0%,60%,100% { opacity: .25 } 30% { opacity: 1 } }
@media (prefers-reduced-motion: reduce) { .pensando i { animation: none; opacity: .6 } }

.railBaixo { padding: 10px 12px 12px; border-top: 1px solid var(--linha2); }
#escrever {
  width: 100%; resize: none; border: 1px solid var(--linha); border-radius: 8px;
  padding: 9px 11px; background: var(--fundo); min-height: 42px; max-height: 140px; line-height: 1.45;
}
#escrever:focus { border-color: var(--acao); outline: none; }
.dica { font-size: 10.5px; color: var(--tinta3); margin: 6px 2px 0; display: flex; justify-content: space-between; }

/* --- principal --- */
#principal { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topo {
  display: flex; align-items: center; gap: 10px; padding: 10px 16px;
  border-bottom: 1px solid var(--linha); background: var(--sup);
}
.abas { display: flex; gap: 4px; }
.aba {
  padding: 6px 13px; border-radius: 6px; font-size: 13px; font-weight: 600; color: var(--tinta3);
}
.aba[aria-selected="true"] { background: var(--sup2); color: var(--tinta); }
.espaco { flex: 1; }
.versao { font-size: 11px; color: var(--tinta3); text-align: right; line-height: 1.35; }
.eu { font-size: 12px; color: var(--tinta2); }

/* --- quadro --- */
#quadro { flex: 1; overflow: auto; padding: 14px; }
.colunas { display: grid; grid-template-columns: repeat(5, minmax(190px, 1fr)); gap: 12px; min-height: 100%; }
.coluna { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.colCab {
  display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700;
  letter-spacing: .07em; text-transform: uppercase; padding-bottom: 6px;
  border-bottom: 2px solid currentColor;
}
.colCab .n { margin-left: auto; font-weight: 500; opacity: .75; }
.coluna[data-c="backlog"] .colCab { color: var(--backlog) }
.coluna[data-c="to-do"] .colCab { color: var(--todo) }
.coluna[data-c="on-going"] .colCab { color: var(--going) }
.coluna[data-c="review"] .colCab { color: var(--review) }
.coluna[data-c="done"] .colCab { color: var(--done) }
.solta { flex: 1; display: flex; flex-direction: column; gap: 8px; border-radius: var(--r); min-height: 60px; }
.solta.sobre { background: var(--acao-sup); outline: 2px dashed var(--acao); outline-offset: -2px; }

.card {
  background: var(--sup); border: 1px solid var(--linha2); border-radius: var(--r);
  padding: 9px 10px; cursor: grab; box-shadow: var(--sombra);
}
.card:hover { border-color: var(--linha); }
.card.arrastando { opacity: .4; }
.card.ia { border-left: 3px solid var(--ia); }
.card h4 { margin: 0 0 5px; font-size: 13.5px; font-weight: 600; line-height: 1.35; }
.card .meta { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.tag {
  font-size: 10px; padding: 1px 6px; border-radius: 4px; background: var(--sup2);
  color: var(--tinta2); font-family: ui-monospace, Menlo, monospace;
}
.tag.tenant { background: var(--acao-sup); color: var(--acao); }
.tag.quem { background: none; color: var(--tinta3); }
.card .num { font-size: 10px; color: var(--tinta3); font-family: ui-monospace, Menlo, monospace; }

/* --- conhecimento --- */
#conhecimento { flex: 1; overflow: auto; padding: 14px 16px; }
.saberTopo { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.saberTopo input, .saberTopo select {
  padding: 7px 10px; border: 1px solid var(--linha); border-radius: 6px; background: var(--sup);
}
.saberTopo input { flex: 1; min-width: 180px; }
.btnLeve {
  padding: 7px 12px; border-radius: 6px; border: 1px solid var(--linha);
  background: var(--sup); font-size: 13px; font-weight: 600;
}
.saberLista { display: flex; flex-direction: column; gap: 6px; max-width: 900px; }
.saber {
  background: var(--sup); border: 1px solid var(--linha2); border-radius: var(--r);
  padding: 10px 12px; cursor: pointer;
}
.saber:hover { border-color: var(--linha); }
.saber .l1 { display: flex; align-items: center; gap: 8px; }
.saber h4 { margin: 0; font-size: 13.5px; font-weight: 600; flex: 1; }
.saber .resumo { margin: 4px 0 0; font-size: 12.5px; color: var(--tinta2); }
.tipo {
  font-size: 10px; text-transform: uppercase; letter-spacing: .06em; padding: 2px 6px;
  border-radius: 4px; background: var(--acao-sup); color: var(--acao);
  font-family: ui-monospace, Menlo, monospace; width: 74px; text-align: center; flex-shrink: 0;
}
.quando { font-size: 10.5px; color: var(--tinta3); font-family: ui-monospace, Menlo, monospace; }
.quando.porIA { color: var(--ia); }
.saber.obsoleto { opacity: .55; }

/* --- painel lateral (detalhe) --- */
#painel { position: fixed; inset: 0; z-index: 40; display: flex; justify-content: flex-end; }
#painel .veu { position: absolute; inset: 0; background: rgba(10,12,16,.35); backdrop-filter: blur(2px); }
.folha {
  position: relative; width: min(560px, 100%); height: 100%; background: var(--sup);
  border-left: 1px solid var(--linha); display: flex; flex-direction: column;
  box-shadow: -20px 0 50px -30px rgba(0,0,0,.6);
}
.folhaTopo { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--linha2); }
.folhaTopo b { flex: 1; font-size: 14px; }
.folhaCorpo { flex: 1; overflow-y: auto; padding: 16px; }
.folhaCorpo label { display: block; margin-bottom: 14px; }
.folhaCorpo label span {
  display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .07em;
  color: var(--tinta3); margin-bottom: 5px;
}
.folhaCorpo input, .folhaCorpo textarea, .folhaCorpo select {
  width: 100%; padding: 9px 11px; border: 1px solid var(--linha); border-radius: 6px; background: var(--fundo);
}
.folhaCorpo textarea { min-height: 200px; resize: vertical; line-height: 1.5; font-family: inherit; }
.folhaBaixo { display: flex; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--linha2); }
.folhaBaixo .botao { width: auto; flex: 1; }
.btnPerigo { color: var(--perigo); border: 1px solid var(--linha); background: var(--sup); padding: 10px 14px; border-radius: 6px; font-weight: 600; }
.historico { margin-top: 6px; font-size: 12px; color: var(--tinta2); }
.historico li { margin-bottom: 4px; }

#aviso {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--tinta); color: var(--fundo); padding: 9px 16px; border-radius: 8px;
  font-size: 13px; z-index: 60; box-shadow: var(--sombra); max-width: 90vw;
}

@media (max-width: 880px) {
  #app { flex-direction: column; }
  #rail { width: 100%; height: 42%; border-right: none; border-bottom: 1px solid var(--linha); }
  .colunas { grid-template-columns: repeat(5, 170px); }
}