/* ================================================================
   虚拟消费者平台 — Virtual Consumer OS v2.0
   styles.css — 深色科技风 UI（紫色主题）
   两页面架构：虚拟人格构建 + 智能问答交互
   ================================================================ */

:root {
  --bg: #07111f;
  --panel: rgba(12, 24, 42, 0.78);
  --panel-strong: rgba(15, 32, 56, 0.92);
  --ink: #ecf7ff;
  --muted: #8fa8bd;
  --line: rgba(167, 139, 250, 0.22);
  --blue: #3b82f6;
  --cyan: #22d3ee;
  --green: #34d399;
  --amber: #f59e0b;
  --red: #fb4d6d;
  --purple: #a78bfa;
  --charcoal: #d8eeff;
  --soft-purple: rgba(167, 139, 250, 0.16);
  --soft-cyan: rgba(34, 211, 238, 0.15);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  --glow: 0 0 22px rgba(167, 139, 250, 0.32);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: transparent;
  overflow-x: hidden;
}

button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

/* ========== App Shell ========== */
.app-shell {
  display: grid;
  grid-template-columns: 248px 1fr;
  min-height: 100vh;
}

/* ========== Sidebar ========== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 24px 18px;
  background:
    linear-gradient(180deg, rgba(15, 32, 56, 0.96), rgba(6, 16, 29, 0.96)),
    linear-gradient(90deg, rgba(167, 139, 250, 0.12), transparent);
  color: #eef5ff;
  border-right: 1px solid rgba(167, 139, 250, 0.18);
  box-shadow: 18px 0 60px rgba(0, 0, 0, 0.22);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(167, 139, 250, 0.95), rgba(59, 130, 246, 0.95)),
    #a78bfa;
  color: #06101d;
  font-weight: 800;
  box-shadow: 0 0 26px rgba(167, 139, 250, 0.5);
}

.brand strong, .brand span { display: block; }
.brand span { margin-top: 3px; color: #a7b4c4; font-size: 12px; }

.nav { display: grid; gap: 8px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: #b7c9da;
  background: rgba(255, 255, 255, 0.02);
  text-align: left;
  cursor: pointer;
  user-select: none;
  transition: all 0.25s ease;
  font-family: inherit;
  font-size: 14px;
}

.nav-item.active, .nav-item:hover {
  color: #ffffff;
  background: linear-gradient(90deg, rgba(167, 139, 250, 0.18), rgba(59, 130, 246, 0.08));
  border-color: rgba(167, 139, 250, 0.32);
  box-shadow: inset 3px 0 0 #a78bfa, 0 0 24px rgba(167, 139, 250, 0.08);
}

.nav-icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  color: #c4b5fd;
  font-size: 18px;
  transition: all 0.3s ease;
  animation: pulse-glow 2s ease-in-out infinite;
}

.nav-item:hover .nav-icon, .nav-item.active .nav-icon {
  animation: rotate-icon 3s linear infinite, pulse-glow 1.5s ease-in-out infinite;
  filter: drop-shadow(0 0 8px rgba(167, 139, 250, 0.8));
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

@keyframes rotate-icon {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.sidebar-back-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid rgba(167, 139, 250, 0.18);
  border-radius: 8px;
  color: #a7b4c4;
  font-size: 13px;
  text-decoration: none;
  transition: all 0.25s ease;
  margin-bottom: 4px;
}
.sidebar-back-link:hover {
  color: #eef5ff;
  border-color: rgba(167, 139, 250, 0.38);
  background: rgba(167, 139, 250, 0.07);
  box-shadow: 0 0 16px rgba(167, 139, 250, 0.08);
}
.sidebar-back-link svg {
  flex-shrink: 0;
  transition: transform 0.25s ease;
}
.sidebar-back-link:hover svg {
  transform: translateX(-3px);
}

.sidebar-footer {
  margin-top: auto;
  padding: 14px;
  border: 1px solid rgba(167, 139, 250, 0.22);
  border-radius: 8px;
  background: rgba(167, 139, 250, 0.08);
}

.sidebar-footer span, .sidebar-footer strong { display: block; }
.sidebar-footer span { color: #a7b4c4; font-size: 12px; }
.sidebar-footer strong { margin-top: 6px; line-height: 1.45; }

/* ========== Main Area ========== */
.main {
  min-width: 0;
  padding: 24px;
  position: relative;
}

.topbar, .panel-header { display: flex; align-items: center; }

.topbar {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.topbar h1, .panel-header h2 { margin: 0; }
.topbar h1 {
  font-size: 28px;
  letter-spacing: 0;
  text-shadow: 0 0 22px rgba(167, 139, 250, 0.2);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--purple);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.top-actions { display: flex; align-items: center; gap: 10px; }

/* ========== Buttons ========== */
.primary-btn, .ghost-btn, .icon-btn {
  min-height: 38px;
  border-radius: 8px;
  border: 1px solid transparent;
}

.primary-btn {
  padding: 0 16px;
  color: #04111d;
  background: linear-gradient(135deg, #c4b5fd, #3b82f6);
  box-shadow: 0 0 24px rgba(167, 139, 250, 0.28);
  font-weight: 700;
}

.primary-btn:hover {
  box-shadow: 0 0 32px rgba(167, 139, 250, 0.45);
  transform: translateY(-1px);
}

.ghost-btn {
  padding: 0 14px;
  color: #d8eeff;
  background: rgba(15, 32, 56, 0.72);
  border-color: var(--line);
}

.ghost-btn:hover {
  border-color: rgba(167, 139, 250, 0.55);
  box-shadow: 0 0 18px rgba(167, 139, 250, 0.15);
}

.ghost-btn.sm { min-height: 30px; padding: 0 10px; font-size: 12px; }

.ghost-btn.danger { color: var(--red); border-color: rgba(251, 77, 109, 0.25); }

.icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  color: #d8eeff;
  background: rgba(15, 32, 56, 0.78);
  border-color: var(--line);
}

/* ========== Metrics Row ========== */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.metric {
  position: relative;
  overflow: hidden;
  min-height: 114px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.metric::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.16), transparent 24%, transparent 72%, rgba(59, 130, 246, 0.12));
  opacity: 0.75;
}

.metric::after {
  position: absolute;
  top: 0;
  left: 18px;
  right: 18px;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(196, 181, 253, 0.9), transparent);
}

.metric > * { position: relative; z-index: 1; }

.metric span { color: var(--muted); font-size: 13px; }

.metric strong {
  display: block;
  margin-top: 8px;
  font-size: 25px;
  color: #ffffff;
}

.metric .metric-detail {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}

/* ========== Workspace ========== */
.workspace {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.work-panel {
  position: relative;
  overflow: hidden;
  display: none !important;
  min-height: 620px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.work-panel::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.16), transparent 24%, transparent 72%, rgba(59, 130, 246, 0.12));
  opacity: 0.75;
}

.work-panel > * { position: relative; z-index: 1; }

.work-panel.active { display: block !important; }

.panel-header {
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.panel-header h2 { font-size: 22px; }

/* ========== Pill / Status Chips ========== */
.pill {
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
}

.pill.done, .pill.active {
  color: #bbf7d0;
  background: rgba(22, 163, 74, 0.18);
}

.pill.pending {
  color: #fde68a;
  background: rgba(245, 158, 11, 0.18);
}

.pill.sm { font-size: 11px; padding: 2px 6px; }

.status-chip {
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid rgba(167, 139, 250, 0.14);
  color: #bdd7ea;
  background: rgba(8, 20, 37, 0.72);
}

.status-chip.active {
  color: #bbf7d0;
  border-color: rgba(52, 211, 153, 0.32);
  background: rgba(16, 185, 129, 0.14);
}

.status-chip.warn {
  color: #fde68a;
  border-color: rgba(245, 158, 11, 0.32);
  background: rgba(245, 158, 11, 0.14);
}

.muted-text { color: var(--muted); font-size: 13px; }

/* ========== Config Card ========== */
.config-card {
  border: 1px solid rgba(167, 139, 250, 0.14);
  border-radius: 8px;
  background: rgba(8, 20, 37, 0.72);
  margin-bottom: 14px;
  animation: fadeIn 0.3s ease;
}

.config-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(167, 139, 250, 0.12);
}

.config-card-header h3 { margin: 0; font-size: 15px; color: #ecf7ff; }

.config-card-body { padding: 14px 16px; }

.section-desc {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ================================================================
   页面1：虚拟人格构建仪表盘
   ================================================================ */

/* 双栏布局 */
.dashboard-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
  margin-bottom: 4px;
}

/* 数字分身列表 */
.digital-twins-list {
  display: grid;
  gap: 10px;
  max-height: 372px;
  overflow-y: auto;
  padding-right: 4px;
}

.digital-twin-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid rgba(52, 211, 153, 0.2);
  border-radius: 8px;
  background: rgba(52, 211, 153, 0.04);
  transition: all 0.2s ease;
}

.digital-twin-card:hover {
  border-color: rgba(52, 211, 153, 0.4);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.08);
}

.dt-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  display: grid;
  place-items: center;
  font-size: 18px;
  color: #04111d;
  font-weight: 700;
  flex-shrink: 0;
}

.dt-info { min-width: 0; }

.dt-info strong {
  display: block;
  font-size: 14px;
  color: #ecf7ff;
  margin-bottom: 2px;
}

.dt-info .dt-brief {
  font-size: 11px;
  color: var(--muted);
  display: block;
  margin-bottom: 4px;
}

.dt-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.dt-meta span {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(8, 20, 37, 0.5);
  color: #b7c9da;
}

.dt-stats {
  text-align: right;
  flex-shrink: 0;
}

.dt-accuracy {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--green);
}

.dt-rounds {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

/* 人格特征提示 */
.dt-personality-tip {
  display: block;
  font-size: 10px;
  color: #c4b5fd;
  margin-bottom: 4px;
  padding: 2px 6px;
  background: rgba(167, 139, 250, 0.08);
  border-radius: 4px;
  line-height: 1.4;
  font-style: italic;
  cursor: help;
}

/* 自动校准徽章 */
.dt-auto-cal-badge {
  display: block;
  font-size: 10px;
  color: #fbbf24;
  margin-top: 3px;
  padding: 1px 5px;
  background: rgba(245, 158, 11, 0.12);
  border-radius: 4px;
  cursor: help;
}

/* 已自动校准的数字分身卡片高亮 */
.digital-twin-card.auto-calibrated {
  border-color: rgba(245, 158, 11, 0.35);
  background: rgba(245, 158, 11, 0.04);
}

.digital-twin-card.auto-calibrated:hover {
  border-color: rgba(245, 158, 11, 0.55);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.1);
}

/* 完全虚拟消费者列表 */
.synthetic-personas-list {
  display: grid;
  gap: 10px;
  max-height: 372px;
  overflow-y: auto;
  padding-right: 4px;
}

.synthetic-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid rgba(167, 139, 250, 0.16);
  border-radius: 8px;
  background: rgba(167, 139, 250, 0.04);
  transition: all 0.2s ease;
}

.synthetic-card:hover {
  border-color: rgba(167, 139, 250, 0.35);
  box-shadow: 0 0 12px rgba(167, 139, 250, 0.08);
}

.syn-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  display: grid;
  place-items: center;
  font-size: 18px;
  flex-shrink: 0;
}

.syn-info { min-width: 0; }

.syn-info strong {
  display: block;
  font-size: 14px;
  color: #ecf7ff;
  margin-bottom: 2px;
}

.syn-info .syn-brief {
  font-size: 11px;
  color: var(--muted);
  display: block;
  margin-bottom: 4px;
}

.syn-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.syn-meta span {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(8, 20, 37, 0.5);
  color: #b7c9da;
}

.syn-stats {
  text-align: right;
  flex-shrink: 0;
}

.syn-confidence {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--purple);
}

.syn-rule {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

/* 校准面板 */
.calibration-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 20px;
}

.cal-subtitle {
  margin: 0 0 12px;
  font-size: 14px;
  color: #c4b5fd;
}

.import-form {
  display: grid;
  gap: 10px;
}

.import-form label {
  display: grid;
  gap: 4px;
  font-size: 13px;
  color: var(--muted);
}

.import-form select,
.import-form input[type="number"] {
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(3, 10, 22, 0.46);
  color: var(--ink);
}

.import-form select:focus,
.import-form input:focus {
  outline: none;
  border-color: rgba(167, 139, 250, 0.72);
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.12);
}

/* 访谈历史 */
.interview-history {
  display: grid;
  gap: 6px;
  max-height: 180px;
  overflow-y: auto;
}

.interview-entry {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border-radius: 6px;
  background: rgba(3, 10, 22, 0.35);
  font-size: 12px;
}

.interview-entry .ie-round {
  font-weight: 700;
  color: var(--cyan);
  min-width: 40px;
}

.interview-entry .ie-info {
  color: #b7c9da;
}

.interview-entry .ie-info strong { color: #ecf7ff; }

.interview-entry .ie-impact {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
}

.ie-impact.up { color: var(--green); background: rgba(52, 211, 153, 0.1); }
.ie-impact.down { color: var(--amber); background: rgba(245, 158, 11, 0.1); }

/* 自动校准访谈条目 */
.interview-entry.auto-cal {
  border-left: 3px solid rgba(245, 158, 11, 0.5);
  background: rgba(245, 158, 11, 0.06);
}

.interview-entry.new-twin {
  border-left: 3px solid rgba(52, 211, 153, 0.5);
  background: rgba(52, 211, 153, 0.06);
}

.interview-entry .cal-summary-text {
  display: block;
  font-size: 11px;
  color: #fbbf24;
  margin-top: 2px;
  line-height: 1.4;
}

/* 准确度收敛图 */
.accuracy-chart-container {
  min-height: 150px;
}

.accuracy-chart {
  width: 100%;
  height: 160px;
  border-radius: 8px;
  background: rgba(3, 10, 22, 0.4);
  position: relative;
  overflow: hidden;
}

.accuracy-chart svg {
  width: 100%;
  height: 100%;
}

.chart-legend {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
  font-size: 11px;
  color: var(--muted);
  flex-wrap: wrap;
}

.legend-item { display: flex; align-items: center; gap: 4px; }

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.legend-dot.train { background: var(--purple); }
.legend-dot.val { background: var(--red); }

/* 虚拟消费者数据库表 */
.vc-database-table-wrap {
  max-height: 400px;
  overflow-y: auto;
}

.vc-database-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.vc-database-table th {
  position: sticky;
  top: 0;
  padding: 10px 12px;
  text-align: left;
  color: var(--muted);
  font-weight: 600;
  background: rgba(8, 20, 37, 0.95);
  border-bottom: 1px solid rgba(167, 139, 250, 0.18);
  white-space: nowrap;
  z-index: 1;
}

.vc-database-table td {
  padding: 10px 12px;
  color: #d8eeff;
  border-bottom: 1px solid rgba(167, 139, 250, 0.06);
  white-space: nowrap;
}

.vc-database-table tr:hover td {
  background: rgba(167, 139, 250, 0.04);
}

.vc-database-table .vc-type-badge {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.vc-type-badge.digital-twin {
  color: var(--green);
  background: rgba(52, 211, 153, 0.12);
}

.vc-type-badge.synthetic {
  color: var(--purple);
  background: rgba(167, 139, 250, 0.12);
}

.vc-database-table .vc-accuracy {
  font-weight: 700;
}

.vc-database-table .vc-accuracy.high { color: var(--green); }
.vc-database-table .vc-accuracy.mid { color: var(--amber); }
.vc-database-table .vc-accuracy.low { color: var(--red); }

/* ================================================================
   页面2：智能问答交互
   ================================================================ */

.qa-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 16px;
  align-items: start;
}

.qa-left {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.qa-right {
  display: flex;
  flex-direction: column;
  min-height: 620px;
}

.qa-right .config-card {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.qa-right .config-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* 对话目标选择 */
.qa-target-select {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

.qa-target-select .radio-card {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid rgba(167, 139, 250, 0.14);
  border-radius: 8px;
  background: rgba(8, 20, 37, 0.6);
  cursor: pointer;
  transition: all 0.2s ease;
}

.qa-target-select .radio-card:hover { border-color: rgba(167, 139, 250, 0.35); }

.qa-target-select .radio-card input[type="radio"] {
  accent-color: var(--purple);
  margin-top: 2px;
  flex-shrink: 0;
}

.radio-card-content strong { display: block; font-size: 13px; color: #d8eeff; margin-bottom: 2px; }
.radio-card-content span { font-size: 11px; color: var(--muted); line-height: 1.4; }
.radio-card input:checked + .radio-card-content strong { color: #c4b5fd; }

#qaTargetSelector { margin-top: 8px; }

#qaTargetSelector select {
  width: 100%;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(3, 10, 22, 0.46);
  color: var(--ink);
}

#qaTargetSelector select:focus {
  outline: none;
  border-color: rgba(167, 139, 250, 0.72);
}

/* 快捷问题 */
.quick-questions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.quick-q-btn {
  padding: 8px 10px;
  border: 1px solid rgba(167, 139, 250, 0.14);
  border-radius: 6px;
  background: rgba(8, 20, 37, 0.5);
  color: #b7c9da;
  font-size: 12px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.4;
}

.quick-q-btn:hover {
  border-color: rgba(167, 139, 250, 0.4);
  background: rgba(167, 139, 250, 0.08);
  color: #ecf7ff;
}

/* 虚拟消费者快速列表 */
.vc-quick-list {
  display: grid;
  gap: 6px;
  max-height: 260px;
  overflow-y: auto;
}

.vc-quick-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(167, 139, 250, 0.1);
  border-radius: 6px;
  background: rgba(8, 20, 37, 0.4);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 12px;
}

.vc-quick-item:hover {
  border-color: rgba(167, 139, 250, 0.35);
  background: rgba(167, 139, 250, 0.06);
}

.vc-quick-item.selected {
  border-color: rgba(167, 139, 250, 0.5);
  background: rgba(167, 139, 250, 0.1);
}

.vc-quick-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: #04111d;
  flex-shrink: 0;
}

.vc-quick-avatar.digital-twin {
  background: linear-gradient(135deg, var(--green), var(--cyan));
}

.vc-quick-avatar.synthetic {
  background: linear-gradient(135deg, var(--purple), var(--blue));
}

.vc-quick-info { flex: 1; min-width: 0; }

.vc-quick-info strong {
  display: block;
  font-size: 12px;
  color: #ecf7ff;
}

.vc-quick-info span {
  font-size: 10px;
  color: var(--muted);
}

/* 对话消息区 */
.qa-messages {
  flex: 1;
  max-height: 480px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-right: 4px;
  margin-bottom: 14px;
}

.qa-welcome {
  display: grid;
  place-items: center;
  padding: 40px 20px;
  text-align: center;
  color: var(--muted);
}

.qa-welcome-icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }

.qa-welcome p { line-height: 1.6; margin: 4px 0; }
.qa-welcome strong { color: #c4b5fd; }

/* 消息气泡 */
.qa-message {
  display: flex;
  gap: 10px;
  animation: fadeIn 0.3s ease;
}

.qa-message.user { flex-direction: row-reverse; }

.qa-msg-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 14px;
  flex-shrink: 0;
  font-weight: 700;
  color: #04111d;
}

.qa-message.user .qa-msg-avatar {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.qa-message.assistant .qa-msg-avatar {
  background: linear-gradient(135deg, var(--purple), #ec4899);
}

.qa-msg-bubble {
  max-width: 75%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.6;
}

.qa-message.user .qa-msg-bubble {
  background: rgba(59, 130, 246, 0.18);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: #ecf7ff;
  border-bottom-right-radius: 4px;
}

.qa-message.assistant .qa-msg-bubble {
  background: rgba(167, 139, 250, 0.12);
  border: 1px solid rgba(167, 139, 250, 0.2);
  color: #ecf7ff;
  border-bottom-left-radius: 4px;
}

.qa-msg-bubble strong { color: #c4b5fd; }

.qa-msg-meta {
  font-size: 10px;
  color: var(--muted);
  margin-top: 4px;
}

.qa-message.user .qa-msg-meta { text-align: right; }

/* 输入区域 */
.qa-input-area {
  border-top: 1px solid rgba(167, 139, 250, 0.12);
  padding-top: 12px;
}

.qa-input-area textarea {
  width: 100%;
  min-height: 60px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(3, 10, 22, 0.46);
  color: var(--ink);
  resize: vertical;
  font-size: 14px;
}

.qa-input-area textarea:focus {
  outline: none;
  border-color: rgba(167, 139, 250, 0.72);
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.12);
}

.qa-input-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

/* ================================================================
   通用组件
   ================================================================ */

.radio-card {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px;
  border: 1px solid rgba(167, 139, 250, 0.14);
  border-radius: 8px;
  background: rgba(8, 20, 37, 0.6);
  cursor: pointer;
  transition: all 0.2s ease;
}

.radio-card:hover { border-color: rgba(167, 139, 250, 0.35); }

.radio-card input[type="radio"] {
  accent-color: var(--purple);
  margin-top: 2px;
  flex-shrink: 0;
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  padding: 14px 20px;
  border-radius: 8px;
  background: rgba(4, 12, 24, 0.96);
  border: 1px solid rgba(167, 139, 250, 0.35);
  color: #ecf7ff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 20px rgba(167, 139, 250, 0.2);
  font-size: 14px;
  animation: toast-in 0.3s ease;
}

.toast.success { border-color: rgba(52, 211, 153, 0.4); }
.toast.error { border-color: rgba(251, 77, 109, 0.4); }
.toast.warning { border-color: rgba(245, 158, 11, 0.4); }

@keyframes toast-in {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: rgba(8, 20, 37, 0.7); border-radius: 3px; }
::-webkit-scrollbar-thumb { background: rgba(167, 139, 250, 0.4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(167, 139, 250, 0.6); }

/* ========== Responsive ========== */
@media (max-width: 1280px) {
  .dashboard-two-col,
  .calibration-layout,
  .qa-layout {
    grid-template-columns: 1fr;
  }
  .metrics-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metrics-row { grid-template-columns: 1fr; }
  .topbar, .panel-header { flex-direction: column; align-items: flex-start; }
  .quick-questions { grid-template-columns: 1fr; }
  .qa-layout { grid-template-columns: 1fr; }
  .qa-messages { max-height: 320px; }
}

/* ========== 群组分布面板 ========== */
.group-distribution-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(150px, 1fr));
  gap: 10px;
  max-height: 280px;
  overflow-y: auto;
}

.group-dist-card {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid rgba(167, 139, 250, 0.14);
  background: rgba(8, 20, 37, 0.6);
  transition: all 0.2s ease;
  cursor: pointer;
}

.group-dist-card:hover {
  border-color: rgba(167, 139, 250, 0.4);
  box-shadow: 0 0 12px rgba(167, 139, 250, 0.08);
}

.group-dist-card.value-avant { border-left: 3px solid #fb4d6d; }
.group-dist-card.value-stable { border-left: 3px solid #22d3ee; }
.group-dist-card.value-conservative { border-left: 3px solid #34d399; }

.group-dist-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.group-dist-header strong {
  font-size: 13px;
  color: #ecf7ff;
}

.group-dist-count {
  font-size: 16px;
  font-weight: 700;
  color: var(--purple);
}

.group-dist-meta {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
}

.group-life-stage {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(167, 139, 250, 0.12);
  color: #c4b5fd;
}

.group-value-tag {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(59, 130, 246, 0.12);
  color: #bfdbfe;
}

.group-dist-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 6px;
}

.group-dist-keywords span {
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 3px;
  background: rgba(8, 20, 37, 0.5);
  color: #8fa8bd;
}

.group-dist-stats {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--muted);
}

.group-tag-cell {
  font-size: 12px;
  color: #c4b5fd;
  font-weight: 500;
}

@media (max-width: 1280px) {
  .group-distribution-grid {
    grid-template-columns: repeat(4, minmax(130px, 1fr));
  }
}

@media (max-width: 768px) {
  .group-distribution-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .main { padding: 16px; }
  .top-actions { flex-wrap: wrap; }
  .primary-btn, .ghost-btn { flex: 1; }
}