/* ============================================
   圆桌智囊 - 多维思维推演系统
   样式表
   ============================================ */

/* ---------- 基础重置 ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #f5f3ef;
  --bg-secondary: #ebe7e0;
  --bg-card: #ffffff;
  --bg-hover: #f0ede8;
  --text-primary: #2d3e50;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --text: var(--text-primary);
  --text-muted: #9ca3af;
  --accent: #c9a961;
  --accent-dark: #b08d3e;
  --accent-light: #e8d9b5;
  --primary: #3b5998;
  --primary-light: #6b8ccb;
  --primary-dark: #2d4373;
  --border: #e0ddd5;
  --border-light: #ede9e3;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 28px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius: var(--radius-md);
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ---------- 顶部标题栏 ---------- */
.header {
  background: linear-gradient(135deg, #2d3e50 0%, #3b5998 50%, #2d3e50 100%);
  color: #fff;
  padding: 2.5rem 1.5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.header-left {
  flex: 1 1 auto;
  min-width: 0;
}

.header-right {
  flex: 0 0 auto;
  padding-top: 0.2rem;
}

.lang-switch {
  display: inline-flex;
  gap: 2px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 3px;
}

.lang-btn {
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.8rem;
  padding: 0.34rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-sans);
  letter-spacing: 0.03em;
  transition: all 0.2s ease;
}

.lang-btn:hover {
  color: #fff;
}

.lang-btn.active {
  background: #fff;
  color: #2d3e50;
  font-weight: 600;
}

.header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(201,169,97,0.08) 0%, transparent 60%);
  animation: headerGlow 8s ease-in-out infinite alternate;
  /* 装饰层不拦截点击，否则会盖住右上角的语言切换按钮 */
  pointer-events: none;
}

@keyframes headerGlow {
  0% { transform: scale(0.8); opacity: 0.5; }
  100% { transform: scale(1.2); opacity: 1; }
}

.header h1 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 1;
}

.header h1 .accent {
  color: var(--accent);
}

.header .subtitle {
  font-size: 0.95rem;
  opacity: 0.8;
  letter-spacing: 0.05em;
  position: relative;
  z-index: 1;
}

.header-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.8rem;
  position: relative;
  z-index: 1;
}

.header-company {
  font-size: 0.85rem;
  opacity: 0.7;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.8);
}

.header-slogan {
  font-size: 0.8rem;
  opacity: 0.6;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.7);
  font-style: italic;
}

.header .divider {
  width: 60px;
  height: 2px;
  background: var(--accent);
  margin: 1rem auto;
  position: relative;
  z-index: 1;
}

/* ---------- 主容器 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* ---------- 通用面板 ---------- */
.panel {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-light);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}

.panel-header:hover {
  background: var(--bg-hover);
}

.panel-header h2 {
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-header .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.panel-header .toggle-icon {
  font-size: 1.2rem;
  color: var(--text-secondary);
  transition: transform 0.3s;
}

.panel.collapsed .toggle-icon {
  transform: rotate(-90deg);
}

.panel.collapsed .panel-body {
  display: none;
}

.panel-body {
  padding: 1.5rem;
}

/* ---------- API设置区 ---------- */
.api-preset-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.api-preset-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.api-preset-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.api-preset-btn.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(59,89,152,0.1);
}

.api-key-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.api-key-row input {
  flex: 1;
}

.api-key-toggle {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all 0.2s;
}

.api-key-toggle:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

/* ---------- API 测试连接 ---------- */
.api-test-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.api-test-btn {
  padding: 0.55rem 1.2rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.api-test-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.api-test-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.api-test-btn .loading-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

.api-test-result {
  font-size: 0.82rem;
  line-height: 1.5;
  flex: 1;
  min-width: 200px;
}

.api-test-result.success {
  color: #065f46;
}

.api-test-result.success::before {
  content: '\2705';
  margin-right: 0.3rem;
}

.api-test-result.error {
  color: #991b1b;
}

.api-test-result.error::before {
  content: '\274C';
  margin-right: 0.3rem;
}

.api-test-result.testing {
  color: var(--text-muted);
}

.api-test-result.testing::before {
  content: '\23F3';
  margin-right: 0.3rem;
}

.security-note {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: #fef9e7;
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: #92400e;
  line-height: 1.5;
}

.security-note .icon {
  flex-shrink: 0;
  font-size: 1rem;
}

/* ---------- 人物选择区 ---------- */
/* 快捷阵容：一键自动入座 */
.preset-groups {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: stretch;
  margin-bottom: 1.1rem;
  padding: 0.75rem 0.85rem;
  background: linear-gradient(135deg, rgba(59,89,152,0.06), rgba(216,128,30,0.06));
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
}

.preset-label {
  align-self: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-right: 0.2rem;
  white-space: nowrap;
}

.preset-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  text-align: left;
  transition: all 0.18s ease;
  min-width: 130px;
}

.preset-btn:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(59,89,152,0.15);
  transform: translateY(-2px);
}

.preset-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}

.preset-desc {
  font-size: 0.68rem;
  color: var(--text-muted);
  line-height: 1.25;
}

/* 人物卡片地区/流派徽章 */
.region-badge {
  display: inline-block;
  font-size: 0.62rem;
  padding: 0.08rem 0.4rem;
  border-radius: 10px;
  background: rgba(59,89,152,0.1);
  color: var(--primary-light);
  border: 1px solid rgba(59,89,152,0.2);
  margin-top: 0.1rem;
  line-height: 1.3;
}

.character-toolbar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  align-items: center;
}

.search-box {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.55rem 0.8rem 0.55rem 2.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(59,89,152,0.1);
}

.search-box .search-icon {
  position: absolute;
  left: 0.7rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.category-filters {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.category-chip {
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-card);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-secondary);
  white-space: nowrap;
}

.category-chip:hover {
  border-color: var(--accent);
}

.category-chip.active {
  background: var(--text-primary);
  color: #fff;
  border-color: var(--text-primary);
}

.character-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.character-card {
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  cursor: pointer;
  transition: all 0.25s;
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
}

.character-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.character-card.selected {
  border-color: var(--primary);
  background: linear-gradient(135deg, #f0f4ff 0%, #fff 100%);
}

.character-card.selected::after {
  content: '✓';
  position: absolute;
  top: 0.4rem;
  right: 0.4rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
}

.character-card .avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
  font-family: var(--font-serif);
}

.character-card .name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.character-card .era {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.character-card .title-text {
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 自定义角色按钮 */
.add-custom-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-secondary);
  min-height: 140px;
}

.add-custom-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: #fefdf8;
}

.add-custom-btn .plus {
  font-size: 1.8rem;
  margin-bottom: 0.3rem;
}

.add-custom-btn .text {
  font-size: 0.82rem;
}

/* 选中状态栏 */
.selection-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.selection-bar .count {
  font-size: 0.9rem;
  font-weight: 600;
}

.selection-bar .count .num {
  color: var(--primary);
  font-size: 1.1rem;
}

.selection-bar .selected-names {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.selection-bar .selected-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  background: var(--bg-card);
  border-radius: 20px;
  font-size: 0.78rem;
  border: 1px solid var(--border);
}

.selection-bar .selected-tag .remove {
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1;
}

.selection-bar .selected-tag .remove:hover {
  color: var(--error);
}

/* ---------- 圆桌可视化 ---------- */
.roundtable-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 0;
}

.roundtable-wrapper {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1;
  margin: 0 auto;
}

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

.roundtable-seat {
  cursor: default;
  transition: transform 0.3s;
}

.roundtable-seat circle {
  transition: all 0.3s;
}

.roundtable-seat:hover circle {
  filter: brightness(1.1);
}

.roundtable-seat text {
  font-family: var(--font-serif);
  pointer-events: none;
}

.roundtable-seat .seat-name {
  font-size: 11px;
  fill: var(--text-primary);
  font-weight: 600;
}

.roundtable-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 300px;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
}

.roundtable-empty .empty-icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  opacity: 0.3;
}

/* ---------- AI自动研究角色 ---------- */
.ai-research-section {
  background: linear-gradient(135deg, #f0f4ff 0%, #fefdf8 100%);
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.ai-research-label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

.ai-research-label .research-icon {
  flex-shrink: 0;
  font-size: 1.1rem;
}

.ai-research-input-row {
  display: flex;
  gap: 0.5rem;
}

.ai-research-input-row input {
  flex: 1;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.ai-research-input-row input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,89,152,0.1);
}

.research-btn {
  padding: 0.6rem 1.2rem;
  background: linear-gradient(135deg, var(--primary) 0%, #2d3e50 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.research-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* 研究结果模态框 */
.research-modal {
  max-width: 760px;
  max-height: 85vh;
}

.research-modal .modal-body {
  max-height: 65vh;
  overflow-y: auto;
}

.research-result-content {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.research-result-content h2 {
  font-size: 1.1rem;
  font-family: var(--font-serif);
  margin: 1.2rem 0 0.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 2px solid var(--accent-light);
  color: var(--text-primary);
}

.research-result-content h3 {
  font-size: 0.98rem;
  font-weight: 600;
  margin: 0.8rem 0 0.3rem;
  color: var(--primary);
}

.research-result-content p {
  margin: 0.4rem 0;
}

.research-result-content ul,
.research-result-content ol {
  margin: 0.4rem 0;
  padding-left: 1.5rem;
}

.research-result-content li {
  margin: 0.2rem 0;
}

.research-result-content strong {
  color: var(--text-primary);
  font-weight: 700;
}

.research-result-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 0.8rem;
  margin: 0.6rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* ---------- 内容输入区 ---------- */
.input-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.input-tab {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.input-tab:hover {
  border-color: var(--primary-light);
}

.input-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.input-textarea {
  width: 100%;
  min-height: 160px;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  line-height: 1.6;
  resize: vertical;
  color: var(--text-primary);
  background: var(--bg-card);
}

.input-textarea:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(59,89,152,0.1);
}

.input-textarea::placeholder {
  color: var(--text-muted);
}

/* PDF 上传 */
.pdf-upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-card);
}

.pdf-upload-zone:hover {
  border-color: var(--accent);
  background: #fefdf8;
}

.pdf-upload-zone.dragover {
  border-color: var(--primary);
  background: #f0f4ff;
}

.pdf-upload-zone .upload-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.5;
}

.pdf-upload-zone .upload-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pdf-upload-zone .upload-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

.pdf-file-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: #f0f4ff;
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-sm);
  margin-top: 0.75rem;
}

.pdf-file-info .file-name {
  font-size: 0.85rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.pdf-file-info .file-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.pdf-file-info .remove-pdf {
  cursor: pointer;
  color: var(--error);
  font-size: 0.85rem;
}

/* ---------- 参数选项 ---------- */
.options-row {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.option-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.option-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.radio-group {
  display: flex;
  gap: 0.4rem;
}

.radio-btn {
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.radio-btn:hover {
  border-color: var(--accent);
}

.radio-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ---------- 推演模式切换 ---------- */
.mode-group {
  gap: 0.5rem;
}

.mode-group .radio-btn {
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.mode-hint {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  margin-top: 0.5rem;
  padding: 0.4rem 0.7rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
}

/* ---------- 畅享模式：独立API配置面板 ---------- */
#parallel-api-panel {
  margin-top: 1.2rem;
  padding: 1.2rem;
  background: linear-gradient(135deg, #f0f7ff 0%, #faf5ff 100%);
  border: 1px solid #d4d4f8;
  border-radius: var(--radius);
}

.parallel-panel-header h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.parallel-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0.8rem;
}

.parallel-actions {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
}

.parallel-action-btn {
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.2s;
  white-space: nowrap;
}

.parallel-action-btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.parallel-action-btn.primary:hover {
  opacity: 0.9;
}

.parallel-action-btn.secondary {
  background: #fff;
  color: var(--text-secondary);
}

.parallel-action-btn.secondary:hover {
  border-color: var(--error);
  color: var(--error);
}

.parallel-empty {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

.char-api-row {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.8rem;
  margin-bottom: 0.6rem;
  transition: box-shadow 0.2s;
}

.char-api-row:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.char-api-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.char-api-header .avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.char-api-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
  flex-shrink: 0;
}

.char-api-preset {
  margin-left: auto;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--text-secondary);
  background: #fff;
  cursor: pointer;
}

.char-api-fields {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
}

.char-api-fields input {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-primary);
  background: #fff;
  transition: border-color 0.2s;
}

.char-api-fields input:focus {
  outline: none;
  border-color: var(--accent);
}

.char-api-fields input::placeholder {
  color: var(--text-tertiary);
  font-size: 0.75rem;
}

@media (max-width: 768px) {
  .char-api-fields {
    grid-template-columns: 1fr;
  }
  .char-api-preset {
    margin-left: 0;
    margin-top: 0.3rem;
  }
  .char-api-header {
    flex-wrap: wrap;
  }
}

/* ---------- 开始按钮 ---------- */
.action-section {
  text-align: center;
  padding: 1.5rem;
}

.start-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, #2d3e50 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: var(--shadow-md);
  letter-spacing: 0.05em;
}

.start-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.start-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.start-btn .loading-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- 进度条 ---------- */
.progress-section {
  margin: 1rem 0;
}

.progress-bar-wrapper {
  background: var(--bg-secondary);
  border-radius: 20px;
  overflow: hidden;
  height: 8px;
  margin-bottom: 0.5rem;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 20px;
  transition: width 0.5s ease;
  width: 0%;
}

.progress-text {
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-align: center;
}

/* ---------- 结果展示区 ---------- */
.results-section {
  display: none;
}

.results-section.visible {
  display: block;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.results-header h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--text-primary);
}

/* 单人发言卡片 */
.individual-results {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.individual-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.individual-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.individual-card-header .avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-serif);
  flex-shrink: 0;
}

.individual-card-header .info {
  flex: 1;
}

.individual-card-header .info .name {
  font-size: 0.95rem;
  font-weight: 600;
}

.individual-card-header .info .meta {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.individual-card-header .copy-btn {
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--text-secondary);
  transition: all 0.2s;
  white-space: nowrap;
}

.individual-card-header .copy-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.individual-card-body {
  padding: 1.25rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.individual-card-body .loading-text {
  color: var(--text-muted);
  font-style: italic;
}

.individual-card-body .cursor-blink {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  animation: blink 1s infinite;
  vertical-align: text-bottom;
  margin-left: 2px;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Markdown 渲染样式 */
.individual-card-body h1,
.synthesis-body h1 { font-size: 1.3rem; margin: 1rem 0 0.5rem; font-family: var(--font-serif); }
.individual-card-body h2,
.synthesis-body h2 { font-size: 1.15rem; margin: 1rem 0 0.5rem; font-family: var(--font-serif); }
.individual-card-body h3,
.synthesis-body h3 { font-size: 1.02rem; margin: 0.8rem 0 0.4rem; font-weight: 600; }
.individual-card-body p,
.synthesis-body p { margin: 0.5rem 0; }
.individual-card-body ul,
.synthesis-body ul { margin: 0.5rem 0; padding-left: 1.5rem; }
.individual-card-body ol,
.synthesis-body ol { margin: 0.5rem 0; padding-left: 1.5rem; }
.individual-card-body li,
.synthesis-body li { margin: 0.25rem 0; }
.individual-card-body blockquote,
.synthesis-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin: 0.75rem 0;
  color: var(--text-secondary);
}
.individual-card-body strong,
.synthesis-body strong { font-weight: 700; color: var(--text-primary); }
.individual-card-body code,
.synthesis-body code {
  background: var(--bg-secondary);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* 综合报告 */
.synthesis-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 2px solid var(--accent);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.synthesis-header {
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, #2d3e50 0%, #3b5998 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.synthesis-header h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.synthesis-header .copy-btn {
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.1);
  cursor: pointer;
  font-size: 0.78rem;
  color: #fff;
  transition: all 0.2s;
}

.synthesis-header .copy-btn:hover {
  background: rgba(255,255,255,0.2);
}

.synthesis-body {
  padding: 1.5rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text-primary);
}

/* 一键复制完整报告按钮 */
.copy-report-btn {
  padding: 0.45rem 1.2rem;
  font-size: 0.85rem;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
}

.copy-report-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 89, 152, 0.3);
}

.copy-report-btn:active {
  transform: translateY(0);
}

/* 免责声明 */
.disclaimer-box {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  background: #fef9e7;
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: #92400e;
  line-height: 1.6;
}

.disclaimer-box .title {
  font-weight: 700;
  margin-bottom: 0.3rem;
}

/* ---------- 页脚 ---------- */
.footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

.footer .disclaimer-footer {
  max-width: 700px;
  margin: 0 auto 1rem;
  line-height: 1.6;
}

.footer a {
  color: var(--primary);
  text-decoration: none;
}

/* ---------- 模态框（自定义角色） ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.4);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.visible {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 520px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-close {
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
  background: none;
  border: none;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.modal-btn {
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.modal-btn.primary {
  background: var(--primary);
  color: #fff;
}

.modal-btn.primary:hover {
  background: #2d3e50;
}

.modal-btn.secondary {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.modal-btn.secondary:hover {
  background: var(--bg-hover);
}

/* ---------- 通知提示 ---------- */
.notification {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-size: 0.88rem;
  z-index: 2000;
  animation: slideIn 0.3s ease;
  max-width: 360px;
}

.notification.success {
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  color: #065f46;
}

.notification.error {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #991b1b;
}

.notification.info {
  background: #eff6ff;
  border: 1px solid #93c5fd;
  color: #1e40af;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.notification.fade-out {
  animation: fadeOut 0.3s ease forwards;
}

@keyframes fadeOut {
  to { transform: translateX(100%); opacity: 0; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .header {
    justify-content: center;
    flex-direction: column;
    align-items: center;
  }
  .header-right {
    order: -1;
    padding-top: 0;
  }
  .header h1 {
    font-size: 1.6rem;
  }

  .container {
    padding: 1rem;
  }

  .character-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .panel-body {
    padding: 1rem;
  }

  .individual-results {
    grid-template-columns: 1fr;
  }

  .options-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}