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

:root {
  --bg-primary: #0d0d12;
  --bg-secondary: #15151c;
  --bg-card: #1c1c26;
  --bg-input: #222230;
  --bg-hover: #2a2a36;
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #6b6b76;
  --accent: #8b5cf6;
  --accent-hover: #7c3aed;
  --accent-light: rgba(139, 92, 246, 0.12);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --user-bubble: linear-gradient(135deg, #8b5cf6, #6366f1);
  --ai-bubble: #1c1c26;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #10b981;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== 视图切换 ===== */
.view {
  display: none;
  height: 100vh;
  flex-direction: column;
}

.view.active {
  display: flex;
}

/* ===== 顶部栏 ===== */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.icon-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* ===== 首页内容 ===== */
.home-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.character-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

/* 角色卡片 */
.char-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.char-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--user-bubble);
  opacity: 0;
  transition: var(--transition);
}

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

.char-card:hover::before {
  opacity: 1;
}

.char-card-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 12px;
}

.char-card-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.char-card-desc {
  font-size: 13px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.char-card-actions {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: var(--transition);
}

.char-card:hover .char-card-actions {
  opacity: 1;
}

.char-card-actions button {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 30px;
  height: 30px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.char-card-actions button:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.char-card-actions button.danger:hover {
  background: var(--danger);
  color: white;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: 16px;
}

.empty-state h2 {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

/* 浮动按钮 */
.fab {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
  transition: var(--transition);
  z-index: 100;
}

.fab:hover {
  background: var(--accent-hover);
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(139, 92, 246, 0.5);
}

/* ===== 聊天页 ===== */
.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  position: relative;
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  cursor: pointer;
}

.chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.chat-header-text {
  display: flex;
  flex-direction: column;
}

.chat-name {
  font-size: 15px;
  font-weight: 600;
}

.chat-status {
  font-size: 12px;
  color: var(--success);
}

.chat-status.thinking {
  color: var(--accent);
}

/* 更多菜单 */
.chat-menu {
  position: absolute;
  top: 52px;
  right: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 200;
  min-width: 160px;
  animation: menuSlide 0.15s ease;
}

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

.chat-menu button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  border-radius: 8px;
  transition: var(--transition);
  font-family: inherit;
}

.chat-menu button:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.chat-menu .menu-item-danger:hover {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

/* 消息容器 */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 16px 0;
}

.messages-list {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* 消息气泡 */
.message {
  display: flex;
  gap: 10px;
  margin-bottom: 8px;
  animation: msgIn 0.3s ease;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.message-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

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

.message-content {
  max-width: 72%;
}

.message-bubble {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 14.5px;
  line-height: 1.6;
  word-break: break-word;
  white-space: pre-wrap;
}

.message.assistant .message-bubble {
  background: var(--ai-bubble);
  border: 1px solid var(--border);
  border-top-left-radius: 4px;
  color: var(--text-primary);
}

.message.user .message-bubble {
  background: var(--user-bubble);
  border-top-right-radius: 4px;
  color: white;
}

/* 消息操作栏 */
.message-actions {
  display: flex;
  gap: 4px;
  margin-top: 4px;
  opacity: 0;
  transition: var(--transition);
}

.message.assistant .message-actions {
  justify-content: flex-start;
}

.message.user .message-actions {
  justify-content: flex-end;
}

.message:hover .message-actions {
  opacity: 1;
}

.msg-action-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.msg-action-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* 打字指示器 */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  align-items: center;
}

.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: typingBounce 1.4s infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* 输入栏 */
.chat-input-bar {
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-input-wrapper {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
  align-items: flex-end;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 8px 8px 16px;
  transition: var(--transition);
}

.chat-input-wrapper:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.message-input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 14.5px;
  font-family: inherit;
  resize: none;
  outline: none;
  max-height: 120px;
  line-height: 1.5;
  padding: 6px 0;
}

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

.send-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}

.send-btn:hover {
  background: var(--accent-hover);
}

.send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ===== 弹窗 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 20px;
  animation: overlayIn 0.2s ease;
}

@keyframes overlayIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* 表单 */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.label-optional {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 12px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 10px 14px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group textarea {
  line-height: 1.6;
}

.form-hint {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

.form-hint a {
  color: var(--accent);
  text-decoration: none;
}

.form-hint a:hover {
  text-decoration: underline;
}

.settings-status {
  font-size: 13px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-top: 8px;
  display: none;
}

.settings-status.success {
  display: block;
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.settings-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* Emoji 选择器 */
.emoji-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.emoji-option {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.emoji-option:hover {
  background: var(--bg-hover);
  transform: scale(1.1);
}

.emoji-option.selected {
  border-color: var(--accent);
  background: var(--accent-light);
}

/* 按钮 */
.btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

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

.btn-ghost:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ===== 响应式 ===== */
@media (max-width: 600px) {
  .top-bar {
    padding: 12px 16px;
  }
  .home-content {
    padding: 16px;
  }
  .character-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
  }
  .char-card {
    padding: 16px;
  }
  .fab {
    bottom: 20px;
    right: 20px;
  }
  .messages-list {
    padding: 0 12px;
  }
  .message-content {
    max-width: 82%;
  }
  .modal {
    border-radius: var(--radius);
  }
}

/* ===== 顶部 tab 切换 ===== */
.tabs {
  display: flex;
  gap: 8px;
  padding: 0 24px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.tab {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 16px;
  cursor: pointer;
  font-family: inherit;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}
.tab:hover { color: var(--text-primary); }
.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 发布到广场开关 */
.publish-toggle {
  margin-top: 4px;
  padding: 10px 12px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
}
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-primary);
}
.checkbox-label input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

/* 加载提示 */
.loading-hint {
  text-align: center;
  color: var(--text-secondary);
  padding: 40px;
  font-size: 14px;
}

/* 管理后台 */
.admin-tip {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.admin-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
}
.admin-item-avatar {
  font-size: 28px;
  flex-shrink: 0;
}
.admin-item-info {
  flex: 1;
  min-width: 0;
}
.admin-item-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
}
.admin-item-desc {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}
.admin-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
.admin-status {
  font-size: 13px;
  color: var(--text-secondary);
}
.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}