:root {
  --bg: #0e1117;
  --bg2: #161b22;
  --bg3: #1f2630;
  --azul: #00d2ff;
  --azul-esc: #0096c8;
  --texto: #e6edf3;
  --suave: #9aa7b4;
  --user: #1f6feb;
  --erro: #b3261e;
  --aviso: #8a6d00;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--texto);
  height: 100vh;
}

/* ---------- Login / Registro ---------- */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.card-auth {
  background: var(--bg2);
  border: 1px solid #2a313c;
  border-radius: 16px;
  padding: 36px 32px;
  width: 100%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,.4);
}
.card-auth .logo { font-size: 44px; }
.card-auth h1 { margin: 8px 0 2px; font-size: 26px; }
.card-auth .sub { color: var(--suave); margin: 0 0 22px; font-size: 14px; }
.card-auth form { display: flex; flex-direction: column; gap: 12px; }
.card-auth input {
  background: var(--bg3);
  border: 1px solid #303845;
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--texto);
  font-size: 15px;
}
.card-auth input:focus { outline: none; border-color: var(--azul); }
.card-auth button {
  background: var(--azul);
  color: #04222b;
  border: none;
  border-radius: 10px;
  padding: 12px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 4px;
}
.card-auth button:hover { background: var(--azul-esc); color: #fff; }
.card-auth .link { margin-top: 18px; font-size: 14px; color: var(--suave); }
.card-auth .link a { color: var(--azul); text-decoration: none; }
.erro {
  background: rgba(179,38,30,.15);
  border: 1px solid var(--erro);
  color: #ff9a92;
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
  margin-bottom: 14px;
}

/* ---------- Chat ---------- */
.topo {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: var(--bg2);
  border-bottom: 1px solid #2a313c;
}
.topo .marca { font-size: 18px; }
.topo .info { display: flex; align-items: center; gap: 14px; font-size: 13px; }
.topo .gasto { color: var(--azul); background: var(--bg3); padding: 4px 10px; border-radius: 20px; }
.topo .memorias { color: var(--suave); background: var(--bg3); padding: 4px 10px; border-radius: 20px; }
.topo .quem { color: var(--suave); }
.topo .sair { color: var(--suave); text-decoration: none; border: 1px solid #303845; padding: 4px 10px; border-radius: 20px; }
.topo .sair:hover { color: #fff; border-color: var(--azul); }

.aviso {
  background: rgba(138,109,0,.18);
  border: 1px solid var(--aviso);
  color: #ffd966;
  padding: 10px 18px;
  font-size: 14px;
  text-align: center;
}

#conversa {
  height: calc(100vh - 130px);
  overflow-y: auto;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.vazio { color: var(--suave); text-align: center; margin: auto; font-size: 15px; }
.msg {
  max-width: 75%;
  padding: 11px 15px;
  border-radius: 14px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg.user { background: var(--user); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
.msg.assistant { background: var(--bg3); color: var(--texto); align-self: flex-start; border-bottom-left-radius: 4px; }

.entrada {
  display: flex;
  gap: 10px;
  padding: 14px 18px;
  background: var(--bg2);
  border-top: 1px solid #2a313c;
}
.entrada input {
  flex: 1;
  background: var(--bg3);
  border: 1px solid #303845;
  border-radius: 22px;
  padding: 12px 18px;
  color: var(--texto);
  font-size: 15px;
}
.entrada input:focus { outline: none; border-color: var(--azul); }
.entrada button {
  background: var(--azul);
  color: #04222b;
  border: none;
  border-radius: 50%;
  width: 46px;
  height: 46px;
  font-size: 18px;
  cursor: pointer;
  flex-shrink: 0;
}
.entrada button:hover { background: var(--azul-esc); color: #fff; }
.anexar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  font-size: 20px;
  background: var(--bg3);
  border: 1px solid #303845;
  border-radius: 50%;
  cursor: pointer;
  flex-shrink: 0;
}
.anexar:hover { border-color: var(--azul); }
.msg-img {
  max-width: 240px;
  max-height: 240px;
  border-radius: 10px;
  display: block;
  margin-bottom: 6px;
}

/* ---------- Página de arquivos ---------- */
.pagina {
  max-width: 680px;
  margin: 0 auto;
  padding: 26px 18px;
}
.sub-pag { color: var(--suave); line-height: 1.5; }
.upload-box {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  background: var(--bg2);
  border: 1px solid #2a313c;
  border-radius: 12px;
  padding: 16px;
  margin: 16px 0;
}
.upload-box input[type=file] { flex: 1; color: var(--texto); min-width: 200px; }
.upload-box button {
  background: var(--azul);
  color: #04222b;
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
}
.upload-box button:hover { background: var(--azul-esc); color: #fff; }
.status-up { color: var(--suave); min-height: 22px; margin-bottom: 10px; }
.lista-arq { list-style: none; padding: 0; }
.lista-arq li {
  background: var(--bg3);
  border-radius: 8px;
  padding: 9px 12px;
  margin-bottom: 6px;
}
.lista-arq .ped { color: var(--suave); font-size: 13px; }
.vazio2 { color: var(--suave); }
.btn-limpar {
  background: transparent;
  color: #ff9a92;
  border: 1px solid var(--erro);
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  margin-top: 12px;
}
.btn-limpar:hover { background: rgba(179,38,30,.15); }