:root {
  --bg: #0b1220;
  --panel: #121b2c;
  --panel2: #0f1726;
  --text: #e7eefc;
  --muted: #a7b4cf;
  --accent: #6ee7b7;
  --danger: #fb7185;
  --border: #22314d;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1200px 800px at 10% 0%, #16213e, var(--bg));
  color: var(--text);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(9, 13, 24, 0.6);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { font-weight: 700; letter-spacing: 0.5px; }
.topbar-right { display: flex; gap: 12px; align-items: center; }
.link { color: var(--accent); text-decoration: none; }
.link-btn {
  background: transparent;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  font-size: 14px;
}

.container { padding: 18px; max-width: 1200px; margin: 0 auto; }

.auth-card {
  max-width: 420px;
  margin: 40px auto;
  background: rgba(18, 27, 44, 0.8);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}
.auth-card h1 { margin: 0 0 10px; font-size: 20px; }
.form { display: grid; gap: 10px; }
.form input {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0c1322;
  color: var(--text);
}
.form button {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: linear-gradient(90deg, #34d399, #60a5fa);
  color: #06101e;
  font-weight: 700;
  cursor: pointer;
}
.muted { color: var(--muted); font-size: 13px; margin-top: 10px; }
.error { color: var(--danger); margin-bottom: 10px; }

.layout { display: grid; grid-template-columns: 260px 1fr; gap: 14px; }
.sidebar {
  background: rgba(18, 27, 44, 0.75);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  height: calc(100vh - 120px);
  position: sticky;
  top: 80px;
}
.sidebar-title { font-weight: 700; margin-bottom: 10px; color: var(--muted); }
.sidebar-title { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.small-btn {
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(110, 231, 183, 0.10);
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
}
.sidebar-list { display: grid; gap: 8px; }
.conv {
  border: 1px solid var(--border);
  background: rgba(15, 23, 38, 0.9);
  border-radius: 12px;
  padding: 10px;
  color: var(--text);
  text-decoration: none;
}
.conv.active { border-color: #2dd4bf; }
.conv-title { font-size: 13px; color: var(--text); }

.main {
  background: rgba(18, 27, 44, 0.55);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
}
.conv-bar {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}
.conv-rename { display: flex; gap: 8px; align-items: center; flex: 1; }
.conv-rename input {
  flex: 1;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0c1322;
  color: var(--text);
}
.conv-rename button {
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(110, 231, 183, 0.12);
  color: var(--text);
  cursor: pointer;
}
.chat {
  height: calc(100vh - 240px);
  overflow: auto;
  padding: 6px;
  display: grid;
  gap: 10px;
}
.msg { display: flex; }
.msg.user { justify-content: flex-end; }
.msg.assistant { justify-content: flex-start; }
.tts-btn { margin-left: 8px; align-self: flex-end; }
.bubble {
  max-width: 78%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  white-space: pre-wrap;
  line-height: 1.5;
}
.msg.user .bubble { background: rgba(96, 165, 250, 0.14); }
.msg.assistant .bubble { background: rgba(52, 211, 153, 0.12); }

.composer { border-top: 1px solid var(--border); padding-top: 10px; }
.composer-form { display: flex; gap: 10px; }
.composer-form input {
  flex: 1;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0c1322;
  color: var(--text);
}
.composer-form button {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(110, 231, 183, 0.16);
  color: var(--text);
  cursor: pointer;
}
.composer-hint { margin-top: 8px; color: var(--muted); font-size: 12px; }
.attachments { margin-top: 10px; display: flex; gap: 10px; flex-wrap: wrap; }
.attachments button {
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(96, 165, 250, 0.10);
  color: var(--text);
  cursor: pointer;
}
.attachments select {
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(96, 165, 250, 0.06);
  color: var(--text);
  cursor: pointer;
}

.cards { margin-top: 10px; display: grid; gap: 10px; }
.card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: rgba(15, 23, 38, 0.85);
}
.card h3 { margin: 0 0 8px; font-size: 15px; }
.kv { display: grid; grid-template-columns: 120px 1fr; gap: 6px 10px; font-size: 13px; }
.kv .k { color: var(--muted); }
.timer { display: flex; gap: 10px; align-items: center; margin-top: 10px; }
.timer .time { font-weight: 700; }
.timer button {
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(96, 165, 250, 0.12);
  color: var(--text);
  cursor: pointer;
}
.feedback { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.feedback button {
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(110, 231, 183, 0.10);
  color: var(--text);
  cursor: pointer;
}

.settings h1 { margin: 0 0 12px; font-size: 20px; }
.page h1 { margin: 0 0 12px; font-size: 20px; }
.panel {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: rgba(15, 23, 38, 0.85);
  margin-bottom: 12px;
}
.panel h2 { margin: 0 0 10px; font-size: 16px; }
.form-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
  align-items: center;
}
.form-grid input, .form-grid select, .form-grid textarea {
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0c1322;
  color: var(--text);
}
.input-error {
  border-color: var(--danger) !important;
  box-shadow: 0 0 0 1px rgba(251, 113, 133, 0.35);
}
.input-suggest {
  border-color: #fbbf24 !important;
  box-shadow: 0 0 0 1px rgba(251, 191, 36, 0.25);
}
.form-grid button {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(110, 231, 183, 0.16);
  color: var(--text);
  cursor: pointer;
}

code { color: #93c5fd; }
.ok { color: var(--accent); font-weight: 700; }
.warn { color: #fbbf24; font-weight: 700; }

.table { display: grid; gap: 8px; }
.row { display: grid; gap: 10px; padding: 10px; border: 1px solid var(--border); border-radius: 12px; background: rgba(12, 19, 34, 0.75); }
.row.inv { grid-template-columns: 70px 1.4fr 0.8fr 0.7fr 0.7fr 0.9fr 0.7fr 1.6fr; align-items: center; }
.row.rem { grid-template-columns: 70px 0.7fr 1.1fr 2fr 1.2fr; }
.row.k { grid-template-columns: 70px 0.8fr 2fr 1.4fr 0.7fr; }
.row.b { grid-template-columns: 70px 1.4fr 0.9fr 0.7fr 0.5fr 0.7fr; }
.row.u { grid-template-columns: 70px 1fr 0.7fr 0.6fr 1.3fr 1.3fr 2fr; align-items: center; }
.row.a { grid-template-columns: 70px 1fr 0.8fr 1.2fr 0.9fr 2.6fr; align-items: start; }
.row.head { background: rgba(15, 23, 38, 0.95); color: var(--muted); font-weight: 700; }
.inline { display: inline; }
.inline button { margin-right: 6px; }
.danger-btn {
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(251, 113, 133, 0.16);
  color: var(--text);
  cursor: pointer;
}