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

:root {
  --bg: #0d0d14;
  --panel: #16161f;
  --line: #2a2a3a;
  --ink: #e8e6f0;
  --dim: #9a97ad;
  --gold: #d8b45a;
  --violet: #8d7bd8;
  --ok: #6fce8a;
  --warn: #e0a83c;
}

body {
  background: radial-gradient(1200px 600px at 50% -10%, #1c1a2e 0%, var(--bg) 60%);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

.app { max-width: 760px; margin: 0 auto; padding: 24px 16px 60px; }

.masthead { text-align: center; padding: 28px 0 16px; }
.title {
  font-size: 2.2rem;
  letter-spacing: 0.3em;
  background: linear-gradient(90deg, var(--gold), var(--violet), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.dayline { color: var(--dim); font-size: 0.95rem; margin-top: 6px; }

.signals {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  margin-top: 12px;
}
.signal {
  font-size: 0.78rem; padding: 3px 10px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--dim); background: var(--panel);
}
.signal.lit { color: var(--gold); border-color: var(--gold); }

.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 16px 18px; margin-top: 16px;
}
.panel h2 { font-size: 1.05rem; color: var(--gold); margin-bottom: 10px; }
.panel h3 { font-size: 0.95rem; color: var(--gold); margin-bottom: 8px; }

.row { display: flex; gap: 10px; align-items: center; }
.hint { color: var(--dim); font-size: 0.85rem; margin-top: 8px; }

input[type="date"], input[type="text"] {
  flex: 1; background: #0f0f18; color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; font-size: 0.95rem;
}
input:focus { outline: none; border-color: var(--violet); }

.btn {
  background: var(--line); color: var(--ink); border: none;
  border-radius: 8px; padding: 9px 16px; cursor: pointer; font-size: 0.95rem;
}
.btn:hover { filter: brightness(1.15); }
.btn-primary {
  width: 100%; padding: 12px; font-size: 1.05rem; letter-spacing: 0.2em;
  background: linear-gradient(90deg, var(--gold), var(--violet));
  color: #0d0d14; font-weight: 700;
}

.loading { margin-top: 12px; color: var(--violet); text-align: center; font-size: 0.9rem; }
.hidden { display: none; }

.result { margin-top: 16px; display: grid; gap: 12px; }
.engine {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px;
}
.engine h3 { margin-bottom: 6px; }
.engine pre {
  white-space: pre-wrap; font-family: inherit; color: var(--ink); font-size: 0.92rem;
}
.tag {
  display: inline-block; font-size: 0.75rem; padding: 1px 8px; border-radius: 6px;
  margin-bottom: 8px;
}
.tag.gua { background: #2a2440; color: var(--violet); }
.tag.sign { background: #24301f; color: var(--ok); }
.tag.card { background: #30211f; color: #e08a6f; }

.ai-box { background: linear-gradient(180deg, #181623, var(--panel)); }
.ai-text { white-space: pre-wrap; font-size: 0.98rem; }

.chat { margin-top: 16px; }
.chat-log {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 14px; max-height: 320px; overflow-y: auto; margin-bottom: 10px;
  display: grid; gap: 8px;
}
.msg { padding: 8px 12px; border-radius: 10px; font-size: 0.92rem; white-space: pre-wrap; }
.msg.user { background: #25203a; align-self: flex-end; }
.msg.ai { background: #14141f; border: 1px solid var(--line); }

.foot { margin-top: 32px; text-align: center; color: #555260; font-size: 0.75rem; }

@media (max-width: 480px) {
  .title { font-size: 1.7rem; }
  .row { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
}