/* ==========================================================================
   STYLE 3: 故宫朱红 · 尊贵华彩国潮版 (Imperial Vermilion & Gold Palace Style)
   ========================================================================== */

:root {
  color-scheme: light;
  --palace-red-deep: #5b0f13;
  --palace-red: #6f1418; /* 尊贵故宫暗红/朱砂酒红 */
  --palace-red-light: #8b1b1f;
  --palace-gold: #d4af37; /* 典雅帝王金 */
  --palace-gold-light: #f3e5be;
  --palace-gold-subtle: #fcf8ee;
  --palace-bg: #faf7f2;
  --palace-surface: #ffffff;
  --palace-text: #222222;
  --palace-text-muted: #756f68;
  --palace-border: #e8dfd1;
  --palace-border-gold: #ebd8b0;
  --palace-green: #238551;
  --palace-green-soft: #eaf6ee;
  --palace-radius: 8px;
  --palace-radius-lg: 14px;
  
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Serif SC", serif, sans-serif;
}

* {
  box-sizing: border-box;
}

body.theme-palace {
  margin: 0;
  background-color: var(--palace-bg);
  color: var(--palace-text);
  line-height: 1.6;
}

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

button {
  cursor: pointer;
}

/* 主结构 */
.palace-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

/* ================= 故宫深朱红侧边栏 ================= */
.palace-sidebar {
  background: linear-gradient(180deg, var(--palace-red-deep) 0%, var(--palace-red) 50%, var(--palace-red-deep) 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  padding: 18px 14px 10px;
  overflow-y: auto;
  z-index: 20;
  box-shadow: 2px 0 12px rgba(91, 15, 19, 0.25);
}

.palace-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.gold-seal-badge {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.gold-badge-svg {
  width: 100%;
  height: 100%;
}

.palace-brand-text {
  display: flex;
  flex-direction: column;
}

.palace-uni {
  font-size: 16px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.5px;
  font-family: "PingFang SC", "Songti SC", serif;
}

.palace-sub {
  font-size: 11px;
  color: var(--palace-gold-light);
  opacity: 0.85;
}

.palace-new-chat-btn {
  background: var(--palace-red);
  color: #ffffff;
  border: 1px solid var(--palace-gold);
  border-radius: var(--palace-radius);
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  transition: all 0.2s;
}

.palace-new-chat-btn svg {
  width: 16px;
  height: 16px;
  stroke: var(--palace-gold);
  stroke-width: 2.5;
  fill: none;
}

.palace-new-chat-btn:hover {
  background: #7e191d;
  border-color: #ffffff;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.25);
}

.palace-search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: var(--palace-radius);
  padding: 7px 10px;
  margin-top: 12px;
}

.palace-search-box svg {
  width: 14px;
  height: 14px;
  stroke: var(--palace-gold);
  stroke-width: 2;
  fill: none;
}

.palace-search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 12.5px;
  color: #ffffff;
  width: 100%;
}

.palace-search-box input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.palace-sidebar-body {
  margin-top: 16px;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.palace-session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.palace-session-header h3 {
  font-size: 12px;
  font-weight: 700;
  color: var(--palace-gold-light);
  margin: 0;
}

.palace-time-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.3);
  padding: 2px;
  border-radius: 6px;
  margin-bottom: 10px;
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.palace-tab {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.7);
  padding: 4px 0;
  border-radius: 4px;
}

.palace-tab.active {
  background: var(--palace-gold);
  color: var(--palace-red-deep);
  font-weight: 800;
}

.palace-session-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.chat-session-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 8px;
  border-radius: var(--palace-radius);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.85);
  background: transparent;
  transition: all 0.15s;
  cursor: pointer;
}

.chat-session-row:hover, .chat-session-row.active {
  background: rgba(212, 175, 55, 0.15);
  color: #ffffff;
  border-left: 2px solid var(--palace-gold);
}

.palace-sidebar .session-list-status { color: var(--palace-gold-light); }

.palace-sidebar-footer {
  margin-top: 14px;
  border-top: 1px solid rgba(212, 175, 55, 0.25);
  padding-top: 12px;
}

.palace-nav-heading {
  font-size: 11px;
  color: var(--palace-gold-light);
  margin: 0 0 6px 4px;
  font-weight: 700;
}

.palace-nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 8px;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--palace-radius);
  font-size: 12.5px;
  font-weight: 600;
  text-align: left;
  transition: all 0.15s;
}

.palace-nav-btn svg {
  width: 15px;
  height: 15px;
  stroke: var(--palace-gold);
  stroke-width: 2;
  fill: none;
}

.palace-nav-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.palace-nav-btn.active {
  background: rgba(212, 175, 55, 0.22);
  color: #ffffff;
  border-left: 3px solid var(--palace-gold);
  font-weight: 700;
}

.palace-gold-architecture {
  margin-top: 8px;
  opacity: 0.75;
}

.palace-svg {
  width: 100%;
  height: 48px;
}

/* ================= 主工作区 Header ================= */
.palace-workspace {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--palace-bg);
}

.palace-header {
  position: sticky;
  top: 0;
  z-index: 15;
  background: #ffffff;
  border-bottom: 1.5px solid var(--palace-border-gold);
  padding: 12px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.palace-header-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.palace-header-title h1 {
  font-size: 20px;
  font-weight: 800;
  color: #1a1a1a;
  margin: 0;
  font-family: "PingFang SC", "Songti SC", serif;
}

.palace-gold-pill {
  background: var(--palace-gold-subtle);
  color: #8c6d23;
  border: 1px solid var(--palace-border-gold);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11.5px;
  font-weight: 600;
}

.palace-header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 风格切换栏 */
.palace-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #fbf5e8;
  padding: 3px 6px;
  border-radius: 16px;
  border: 1px solid var(--palace-border-gold);
}

.switcher-label {
  font-size: 11px;
  color: #7c6838;
  font-weight: 600;
  padding-left: 4px;
  text-decoration: none;
}

.style-link {
  font-size: 11.5px;
  padding: 2px 8px;
  border-radius: 12px;
  color: #666;
  text-decoration: none;
  font-weight: 600;
}

.style-link.active {
  background: var(--palace-red);
  color: #ffffff;
  box-shadow: 0 1px 4px rgba(111, 20, 24, 0.3);
}

.palace-logout-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #ffffff;
  border: 1px solid var(--palace-border);
  color: var(--palace-text-muted);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.15s;
}

.palace-logout-btn:hover {
  border-color: var(--palace-red);
  color: var(--palace-red);
}

/* 主面板网格 */
.panel-grid {
  flex: 1;
  display: flex;
  min-height: calc(100vh - 66px);
}

.panel {
  display: none;
  width: 100%;
}

.panel.active {
  display: block;
}

.palace-chat-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  height: calc(100vh - 66px);
}

.palace-chat-main {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 22px 34px 14px;
  overflow: hidden;
}

.palace-messages-flow {
  flex: 1;
  overflow-y: auto;
  padding-right: 12px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 印章通用 */
.palace-seal {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 800;
  flex-shrink: 0;
}

.user-seal {
  background: #8B1B1F;
  color: #ffffff;
  border: 1.5px solid #ffffff;
  box-shadow: 0 2px 6px rgba(139, 27, 31, 0.2);
}

.bot-seal {
  background: #6F1418;
  color: #D4AF37;
  border: 1.5px solid #D4AF37;
  box-shadow: 0 2px 6px rgba(111, 20, 24, 0.25);
}

/* 用户提问卡片（含如意祥云线描） */
.palace-user-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  background: #ffffff;
  border: 1px solid var(--palace-border-gold);
  border-radius: var(--palace-radius-lg);
  padding: 14px 20px;
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.08);
}

.palace-user-q {
  font-size: 15px;
  font-weight: 700;
  color: #1a1a1a;
}

.palace-cloud-motif {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 70px;
  height: 35px;
  pointer-events: none;
}

.cloud-svg {
  width: 100%;
  height: 100%;
}

/* 回答卡片 */
.palace-bot-card {
  background: #fdfbf7;
  border: 1.5px solid #f0e6d2;
  border-radius: var(--palace-radius-lg);
  padding: 20px 24px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
}

.palace-bot-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.palace-thought-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #f5eedf;
  color: #8c6d23;
  border: 1px solid #e5d5b7;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
}

.palace-section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 800;
  color: #1a1a1a;
  margin: 18px 0 8px;
}

.palace-section-title:first-child {
  margin-top: 0;
}

.gold-vertical-bar {
  width: 3.5px;
  height: 15px;
  background: var(--palace-gold);
  border-radius: 2px;
}

.palace-lead-text {
  margin: 4px 0 10px;
  font-size: 14px;
  color: #333;
}

.palace-bullet-list {
  list-style: none;
  padding-left: 0;
  margin: 10px 0;
}

.palace-bullet-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 12px;
}

.palace-bullet-list li::before {
  content: "•";
  position: absolute;
  left: 4px;
  top: -1px;
  color: var(--palace-red);
  font-size: 18px;
}

.palace-bullet-list li strong {
  color: var(--palace-red);
  font-size: 14px;
  display: inline-block;
  margin-bottom: 2px;
}

.palace-bullet-list li p {
  margin: 2px 0 0;
  font-size: 13.5px;
  color: #444;
}

.palace-answer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  border-top: 1px solid #f0e6d2;
  padding-top: 12px;
}

.action-buttons-group {
  display: flex;
  gap: 8px;
}

.palace-action-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #ffffff;
  border: 1px solid var(--palace-border);
  font-size: 11.5px;
  color: var(--palace-text-muted);
  padding: 3px 8px;
  border-radius: 4px;
  transition: all 0.15s;
}

.palace-action-btn:hover {
  border-color: var(--palace-red);
  color: var(--palace-red);
}

.palace-brand-badge-text {
  font-size: 11.5px;
  color: #8c6d23;
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
}

/* 输入框 */
.palace-composer {
  margin-top: 12px;
}

.palace-composer-shell {
  background: #ffffff;
  border: 1.5px solid var(--palace-border-gold);
  border-radius: var(--palace-radius-lg);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.1);
}

.palace-plus-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--palace-gold-subtle);
  border: 1px solid var(--palace-border-gold);
  display: grid;
  place-items: center;
  color: #795d36;
}

.palace-plus-btn svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 2.2;
}

.palace-composer textarea {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  resize: none;
  height: 24px;
  max-height: 120px;
}

.palace-send-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--palace-red);
  color: #ffffff;
  border: none;
  display: grid;
  place-items: center;
  transition: all 0.15s;
}

.palace-send-btn svg {
  width: 15px;
  height: 15px;
}

.palace-send-btn:hover {
  background: #8b1b1f;
  transform: scale(1.05);
}

/* 右侧面板 */
.palace-trust-panel {
  background: transparent;
  border-left: 1px solid var(--palace-border-gold);
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.palace-card {
  background: #ffffff;
  border: 1px solid var(--palace-border-gold);
  border-radius: var(--palace-radius);
  padding: 14px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
}

.palace-card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.card-name {
  font-size: 13px;
  font-weight: 700;
  color: #1a1a1a;
}

.palace-badge-complete {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--palace-green-soft);
  color: var(--palace-green);
  border: 1px solid #c9ebd4;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
}

.info-group-title {
  font-size: 12px;
  color: #8c6d23;
  margin: 8px 0 6px;
  font-weight: 700;
}

.palace-meta-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 5px 12px;
  font-size: 12px;
}

.palace-meta-grid span {
  color: var(--palace-text-muted);
}

.palace-meta-grid strong {
  color: #1a1a1a;
  text-align: right;
}

.palace-info-p {
  font-size: 11px;
  color: var(--palace-text-muted);
  margin: 8px 0 10px;
  line-height: 1.5;
}

.palace-btn-actions {
  display: flex;
  gap: 8px;
}

.palace-ghost-btn {
  flex: 1;
  background: #fbf8f2;
  border: 1px solid var(--palace-border-gold);
  border-radius: 4px;
  padding: 4px 6px;
  font-size: 11.5px;
  color: #555;
  font-weight: 600;
  transition: all 0.15s;
}

.palace-ghost-btn:hover {
  border-color: var(--palace-red);
  color: var(--palace-red);
}

.palace-box-header {
  font-size: 12.5px;
  font-weight: 700;
  color: #1a1a1a;
  margin: 0 0 8px;
}

.card-arrow-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.palace-source-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fdfbf7;
  border: 1px solid #f0e6d2;
  border-radius: 6px;
  padding: 8px;
}

.source-head-line {
  display: flex;
  align-items: center;
  gap: 6px;
}

.source-title {
  font-size: 12px;
  font-weight: 700;
  color: #222;
}

.source-tag {
  background: #fef4e8;
  color: #b27428;
  border: 1px solid #fae1c3;
  padding: 1px 4px;
  font-size: 10px;
  border-radius: 4px;
}

.source-subtext {
  font-size: 11px;
  color: #888;
  margin: 2px 0 0;
}

.palace-empty-text {
  font-size: 11.5px;
  color: var(--palace-text-muted);
  margin: 6px 0 0;
}

.palace-stage-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.stage-circle {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #faeed7;
  color: var(--palace-red);
  font-weight: 800;
  font-size: 11px;
  display: grid;
  place-items: center;
}

.stage-text {
  flex: 1;
  font-weight: 600;
  color: #333;
}

.stage-pill {
  color: #999;
  font-size: 11px;
}

.palace-tag-chip {
  background: #ebf5ee;
  color: #217454;
  border: 1px solid #c9ebd4;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

/* 辅助面板通用样式 */
.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--palace-border-gold);
  padding-bottom: 14px;
}

.panel-heading h2 {
  font-size: 20px;
  color: var(--palace-red);
  margin: 0 0 4px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  background: #ffffff;
  padding: 20px;
  border-radius: var(--palace-radius);
  border: 1px solid var(--palace-border-gold);
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 13px;
  font-weight: 600;
}

.form-grid input, .form-grid select, .form-grid textarea {
  border: 1px solid var(--palace-border);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 13px;
  background: #fdfbf7;
}

.form-grid label.wide {
  grid-column: 1 / -1;
}

.form-grid label.checkline {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
}

.palace-submit-btn {
  background: var(--palace-red);
  color: #ffffff;
  border: 1px solid var(--palace-gold);
  border-radius: var(--palace-radius);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 700;
}

.split-view {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 16px;
  margin-top: 16px;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border: 1px solid var(--palace-border-gold);
  border-radius: var(--palace-radius);
  font-size: 13px;
}

.table-wrap th, .table-wrap td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid #f0e6d2;
}

.table-wrap th {
  background: #fbf5e8;
  color: #7c6838;
  font-weight: 700;
}

.editor-panel {
  background: #ffffff;
  border: 1px solid var(--palace-border-gold);
  border-radius: var(--palace-radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Runtime-rendered workbench content */
.palace-brand {
  align-items: flex-start;
  flex-direction: column;
  gap: 5px;
}

.palace-brand .university-logo {
  display: block;
  width: min(100%, 210px);
  height: 72px;
  object-fit: contain;
  object-position: left center;
}

.site-logo-crop {
  position: relative;
  width: min(100%, 224px);
  height: 82px;
  overflow: hidden;
  border-radius: 8px;
  background: #fff;
}

.site-logo {
  position: absolute;
  top: 50%;
  left: 0;
  display: block;
  width: 100%;
  height: auto;
  transform: translateY(-50%);
}

.palace-brand .palace-sub { padding-left: 2px; }

.chat-session-row { position: relative; padding: 0; cursor: default; }
.chat-session {
  width: 100%;
  min-width: 0;
  display: grid;
  gap: 2px;
  padding: 8px 30px 8px 9px;
  border: 0;
  border-radius: var(--palace-radius);
  background: transparent;
  color: rgba(255,255,255,.84);
  text-align: left;
}
.chat-session > span:last-child { overflow: hidden; color: rgba(255,255,255,.5); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.chat-session.active, .chat-session:hover { background: rgba(212,175,55,.14); color: #fff; }
.chat-session-title-line { display: flex; min-width: 0; align-items: center; gap: 5px; }
.chat-session-title-line strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-session-pin { flex: none; color: var(--palace-gold); font-size: 9px; }
.chat-session-menu-button {
  position: absolute;
  top: 8px;
  right: 5px;
  width: 24px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--palace-gold-light);
}
.chat-session-action-menu {
  position: fixed;
  z-index: 90;
  min-width: 116px;
  padding: 5px;
  border: 1px solid var(--palace-border-gold);
  border-radius: 8px;
  background: #fffdf8;
  box-shadow: 0 12px 30px rgba(67, 13, 16, .24);
}
.chat-session-action-menu[hidden] { display: none; }
.chat-session-action-menu button { width: 100%; padding: 7px 9px; border: 0; border-radius: 5px; background: transparent; color: var(--palace-red); text-align: left; }
.chat-session-action-menu button:hover { background: #faeed7; }

.palace-messages-flow.is-empty { display: grid; place-items: center; }
.empty-chat { max-width: 520px; text-align: center; }
.empty-chat h3 { margin: 0 0 4px; color: var(--palace-red); font-family: "Songti SC", serif; }
.empty-chat p { margin: 0; color: var(--palace-text-muted); }
.prompt-suggestions { display: grid; gap: 8px; margin-top: 18px; }
.prompt-suggestion {
  padding: 10px 14px;
  border: 1px solid var(--palace-border-gold);
  border-radius: 10px;
  background: linear-gradient(90deg, #fffdf8, #fbf4e7);
  color: var(--palace-red);
  text-align: left;
}
.prompt-suggestion:hover { border-color: var(--palace-gold); }

.chat-message { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 12px; width: 100%; }
.chat-message.user { grid-template-columns: minmax(0, 1fr) 38px; }
.chat-message.user .message-avatar { grid-column: 2; }
.chat-message.user .message-content {
  grid-column: 1;
  grid-row: 1;
  justify-self: end;
  max-width: min(620px, 100%);
  padding: 12px 16px;
  border: 1px solid var(--palace-border-gold);
  border-radius: 14px;
  background: linear-gradient(90deg, #fffaf1, #fffdf9);
  box-shadow: 0 3px 12px rgba(91, 15, 19, .05);
  overflow-wrap: anywhere;
}
.message-avatar {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 2px solid #f1d99f;
  border-radius: 50%;
  background: radial-gradient(circle, #9d2428, var(--palace-red));
  color: #fbe9bc;
  font-family: "Songti SC", serif;
  font-size: 12px;
  font-weight: 800;
  box-shadow: 0 2px 7px rgba(91,15,19,.2);
}
.chat-message.assistant {
  padding: 16px;
  border: 1px solid var(--palace-border-gold);
  border-radius: 14px;
  background: rgba(255,255,255,.92);
}
.message-content { min-width: 0; overflow-wrap: anywhere; }
.message-content > p { margin: 5px 0; color: var(--palace-red-deep); font-weight: 700; }
.chat-message.user .message-content > p { margin: 0; }
.markdown-body { color: #332d28; font-size: 14px; line-height: 1.85; }
.markdown-body h1, .markdown-body h2, .markdown-body h3 { position: relative; color: var(--palace-red); font-family: "Songti SC", serif; }
.markdown-body h2::before, .markdown-body h3::before { content: ""; display: inline-block; width: 3px; height: 1em; margin-right: 7px; border-radius: 3px; background: var(--palace-gold); vertical-align: -.1em; }
.markdown-body p { margin: 7px 0 12px; }
.markdown-body li { margin: 5px 0; }
.message-actions { display: flex; gap: 8px; margin-top: 12px; padding-top: 10px; border-top: 1px solid #f0e5d1; }
.chat-message.user .message-actions { justify-content: flex-end; }
.message-actions button { padding: 4px 8px; border: 0; border-radius: 5px; background: transparent; color: var(--palace-text-muted); font-size: 12px; }
.message-actions button:hover { background: #faeed7; color: var(--palace-red); }
.thinking-indicator { display: flex; gap: 8px; color: var(--palace-red); font-weight: 700; }
.thinking-ellipsis span { animation: palace-pulse 1.2s infinite; }
@keyframes palace-pulse { 50% { opacity: .2; } }

.palace-data-list, .related-list { margin: 8px 0 0; padding-left: 18px; color: var(--palace-text-muted); font-size: 11.5px; }
.palace-data-list li, .related-list li { margin: 6px 0; }
.palace-data-list p { margin: 3px 0; }
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 7px; }
.tag { padding: 2px 8px; border: 1px solid #e8cda2; border-radius: 999px; background: #fff5e6; color: var(--palace-red); font-size: 11px; }
.related-question-button { border: 0; background: transparent; color: var(--palace-red); text-align: left; }
.palace-review-card summary { color: var(--palace-red); cursor: pointer; font-size: 12.5px; font-weight: 800; }
.answer-review-form { display: grid; gap: 9px; margin-top: 12px; }
.answer-review-decision { display: flex; gap: 12px; margin: 0; border: 0; padding: 0; font-size: 12px; }
.answer-review-decision legend { margin-bottom: 5px; color: var(--palace-text-muted); }
.answer-review-form textarea { width: 100%; border: 1px solid var(--palace-border-gold); border-radius: 7px; padding: 8px; resize: vertical; }
.answer-review-feedback { min-height: 18px; color: var(--palace-text-muted); font-size: 11px; }
.inline-actions { display: flex; flex-wrap: wrap; gap: 7px; }

.mobile-only { display: none; }

@media (max-width: 1120px) {
  .palace-chat-shell { grid-template-columns: minmax(0, 1fr) 290px; }
  .palace-chat-main { padding-inline: 22px; }
  .palace-switcher .switcher-label { display: none; }
}

@media (max-width: 820px) {
  .palace-shell { display: block; }
  .palace-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(84vw, 310px);
    transform: translateX(-105%);
    transition: transform .2s ease;
    box-shadow: 14px 0 38px rgba(55, 8, 11, .35);
  }
  body.sidebar-open .palace-sidebar { transform: translateX(0); }
  body.sidebar-open::after { content: ""; position: fixed; inset: 0; z-index: 18; background: rgba(40, 8, 10, .34); }
  .palace-workspace { min-height: 100vh; }
  .palace-header { padding: 10px 14px; gap: 10px; }
  .palace-header-title { flex: 1; min-width: 0; }
  .palace-header-title h1 { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 16px; }
  .palace-gold-pill, .palace-switcher { display: none; }
  .mobile-only { display: grid; width: 36px; height: 36px; place-items: center; border: 1px solid var(--palace-border-gold); border-radius: 8px; background: #fffaf0; }
  .mobile-only svg { width: 18px; fill: none; stroke: var(--palace-red); stroke-width: 2; }
  .palace-chat-shell { display: block; height: auto; }
  .palace-chat-main { min-height: calc(100vh - 57px); padding: 16px 14px 12px; }
  .palace-messages-flow { min-height: 46vh; overflow: visible; padding-right: 0; }
  .palace-trust-panel { border: 0; padding: 0 14px 18px; overflow: visible; }
  .panel-grid { min-height: auto; }
  .panel:not(.palace-chat-panel) { padding: 18px 14px; }
  .split-view { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .palace-header-actions { gap: 6px; }
  .palace-logout-btn span { display: none; }
  .palace-logout-btn { width: 36px; height: 36px; justify-content: center; padding: 0; }
  .chat-message { grid-template-columns: 28px minmax(0, 1fr); gap: 9px; }
  .message-avatar { width: 28px; height: 28px; }
  .chat-message.user .message-content { padding: 10px 12px; }
  .chat-message.assistant { padding: 12px; }
}