:root {
  --bg: #0f1220;
  --bg-soft: #181c2e;
  --card: #1d2236;
  --card-2: #232a42;
  --line: #2c3450;
  --text: #e8ebf5;
  --muted: #9aa3c0;
  --primary: #6c8cff;
  --primary-d: #4f6ef0;
  --accent: #ff9ec4;
  --ok: #46d39a;
  --warn: #ffcf5c;
  --err: #ff6b6b;
  --radius: 14px;
}

* { box-sizing: border-box; }
/* 确保 hidden 属性始终生效，避免被 .overlay / .running 的 display 覆盖 */
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1b2240, transparent), var(--bg);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px;
  background: rgba(15,18,32,0.82);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; }
.logo { font-size: 22px; }
.title { font-weight: 700; font-size: 17px; letter-spacing: .3px; }
.ver { font-size: 12px; color: var(--muted); border: 1px solid var(--line); padding: 1px 7px; border-radius: 999px; }

.screen { max-width: 860px; margin: 0 auto; padding: 22px 18px 80px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 15px; color: #cdd4ee; font-weight: 600; }

.hint { color: var(--muted); font-size: 13px; margin: 8px 0 0; }
.error { color: var(--err); font-size: 14px; margin-top: 10px; }

/* inputs */
.input {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
}
.input:focus { border-color: var(--primary); }
.input.num { width: 110px; }
.textarea { min-height: 160px; resize: vertical; font-family: inherit; }
.field { display: block; margin-bottom: 12px; }
.field > span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.select {
  background: var(--bg-soft); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 9px 12px; font-size: 14px; min-width: 160px;
}

button { cursor: pointer; font-family: inherit; }
.primary {
  background: linear-gradient(180deg, var(--primary), var(--primary-d));
  color: #fff; border: none; border-radius: 10px;
  padding: 10px 18px; font-size: 14px; font-weight: 600;
  transition: filter .15s;
}
.primary:hover { filter: brightness(1.08); }
.primary:disabled { opacity: .55; cursor: not-allowed; }
.primary.sm { padding: 9px 14px; font-size: 13px; }
.primary.lg { padding: 13px 26px; font-size: 16px; }
.ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--line); border-radius: 10px; padding: 7px 12px; font-size: 13px;
}
.ghost:hover { color: var(--text); border-color: var(--primary); }

.pool-control { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.pool-list { list-style: none; padding: 0; margin: 14px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.pool-list li {
  display: flex; align-items: center; gap: 8px;
  background: var(--card-2); border: 1px solid var(--line);
  padding: 8px 12px; border-radius: 999px; font-size: 13px;
}
.pool-list .remove {
  background: transparent; border: none; color: var(--muted);
  font-size: 15px; line-height: 1; padding: 0 2px;
}
.pool-list .remove:hover { color: var(--err); }
.pool-list .badge { background: var(--primary-d); color: #fff; padding: 1px 8px; border-radius: 999px; font-weight: 600; }

.counter { text-align: right; color: var(--muted); font-size: 12px; margin-top: 6px; }
.actions { text-align: center; margin-top: 6px; }

/* chat */
.chat-meta { margin-bottom: 16px; }
.meta-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.chip {
  background: var(--card-2); border: 1px solid var(--line);
  padding: 5px 12px; border-radius: 999px; font-size: 12.5px; color: #cdd4ee;
}
.progress { position: relative; height: 22px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, var(--primary), var(--accent)); transition: width .35s ease; }
.progress-text { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--text); }

.chat-log { display: flex; flex-direction: column; gap: 14px; }
.msg {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 16px;
  animation: rise .3s ease;
}
@keyframes rise { from { opacity: 0; transform: translateY(8px);} to { opacity:1; transform: none;} }
.msg-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.msg-head .who { font-weight: 700; }
.msg-head .mbti-badge { background: var(--primary-d); color: #fff; font-size: 11px; padding: 1px 8px; border-radius: 999px; }
.msg-head .round-no { color: var(--muted); font-size: 12px; }
.msg-head .tag { margin-left: auto; font-size: 11px; color: var(--muted); }
.say { white-space: pre-wrap; font-size: 14.5px; }
.say .caret { display: inline-block; width: 7px; background: var(--primary); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

details.think {
  margin-top: 10px; background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px;
}
details.think summary { cursor: pointer; color: var(--muted); font-size: 13px; user-select: none; }
.think-grid { margin-top: 8px; display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px; }
.think-dim { font-size: 13px; }
.think-dim b { color: var(--accent); display: inline-block; width: 26px; }
.think-dim.idle b { color: var(--muted); }
.think-dim.idle { color: var(--muted); }

.running { display: flex; align-items: center; gap: 10px; color: var(--muted); padding: 6px 2px; }
.running .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--primary); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100%{opacity:.3;} 50%{opacity:1;} }

.chat-actions { text-align: center; margin-top: 22px; }
.warn-banner { background: rgba(255,207,92,.12); border: 1px solid var(--warn); color: var(--warn); padding: 10px 14px; border-radius: 10px; font-size: 13px; margin-top: 10px; }

/* overlay */
.overlay {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(8,10,18,0.7); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
}
.modal {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px 26px; width: min(440px, 90vw);
}
.modal h3 { margin: 0 0 10px; }
.radio-row { display: flex; gap: 22px; margin: 14px 0; }
.radio-row label { display: flex; align-items: center; gap: 6px; font-size: 14px; }
.modal-actions { text-align: right; }

/* 当事人标记（v3.4） */
.first-flag { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; color: var(--accent); margin-right: 6px; cursor: pointer; user-select: none; }
.first-flag input { accent-color: var(--accent); }
.first-badge { background: var(--accent); color: #1a1020; font-size: 11px; padding: 1px 8px; border-radius: 999px; font-weight: 600; }