:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #262b36;
  --text: #e6e9ef;
  --muted: #8a93a6;
  --accent: #4f8cff;
  --accent2: #7c5cff;
  --ok: #3ecf8e;
  --err: #ff5c5c;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: radial-gradient(1200px 600px at 20% -10%, #1b2336 0%, var(--bg) 55%);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  text-align: center;
  padding: 28px 16px 8px;
}
header h1 {
  font-size: 1.7rem;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
header p { color: var(--muted); margin-top: 4px; font-size: 0.95rem; }

main {
  flex: 1;
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 12px 16px 24px;
  display: flex;
  flex-direction: column;
}

#chat {
  flex: 1;
  overflow-y: auto;
  padding: 12px 2px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 58vh;
  min-height: 200px;
}

.msg {
  max-width: 86%;
  padding: 12px 14px;
  border-radius: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 0.95rem;
}
.msg.usuario {
  align-self: flex-end;
  background: linear-gradient(135deg, #24407a, #2c2a55);
  border-bottom-right-radius: 4px;
}
.msg.bot {
  align-self: flex-start;
  background: var(--panel);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}
.msg.erro { border-color: var(--err); color: #ffb3b3; }
.msg.sugestao { border-color: var(--accent); color: #cfe0ff; }

.msg strong { color: #fff; font-weight: 650; }
.msg.bot strong { color: #bcd3ff; }
.msg .bullet { color: var(--accent); margin-right: 6px; font-weight: 700; }

.digite .pontos { animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: 0.2; } }

#form-pergunta {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
#input-pergunta {
  flex: 1;
  padding: 13px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 1rem;
  outline: none;
}
#input-pergunta:focus { border-color: var(--accent); }
button[type="submit"] {
  padding: 0 22px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
}
button[type="submit"]:disabled { opacity: 0.5; cursor: not-allowed; }

#sugestoes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.chip {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 8px 13px;
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: 0.15s;
}
.chip:hover { color: var(--text); border-color: var(--accent); }

footer {
  text-align: center;
  color: #565e70;
  font-size: 0.78rem;
  padding: 12px;
}

@media (max-width: 560px) {
  .msg { max-width: 95%; }
}