/* 心屿 · 设计规范 v1.0 — 设计师系统 */
/* 配色: #7c5cbf 紫 · #f0c040 金 · Dark Mode */

:root {
  /* 颜色 */
  --bg-deep: #0a0a1a;
  --bg-mid: #12122a;
  --bg-surface: #1a1a3a;
  --bg-hover: rgba(255,255,255,0.08);
  --primary: #7c5cbf;
  --primary-light: #9b7ee0;
  --primary-bg: rgba(124,92,191,0.15);
  --accent: #f0c040;
  --accent-soft: rgba(240,192,64,0.15);
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-placeholder: #555570;
  --text-muted: rgba(255,255,255,0.4);
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --error: #e05555;
  --success: #4ecdc4;

  /* 圆角 */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(124,92,191,0.3);

  /* 动效 */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;

  /* 字体 */
  --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  /* 消息气泡专用 */
  --msg-user-gradient: linear-gradient(135deg, var(--primary) 0%, #5a3d99 100%);
  --msg-assistant-bg: rgba(255, 255, 255, 0.06);
  --msg-system-bg: rgba(255, 255, 255, 0.03);
  --msg-error-bg: rgba(224, 85, 85, 0.06);
  --msg-error-color: #e88;
  --msg-error-border: 4px solid var(--error);
  --msg-gap-same: var(--space-2);
  --msg-gap-cross: var(--space-3);
  --msg-gap-system: var(--space-4);
  --msg-collapse-max-lines: 4;
  --msg-collapse-max-height: 96px;
  --msg-expand-max-height: 2000px;
  --msg-collapse-threshold: 280;
  --msg-enter-distance: var(--space-3);
  --msg-enter-duration: var(--transition-normal);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-mid) 50%, #0d0d25 100%);
  color: var(--text-primary);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  -webkit-font-smoothing: antialiased;
}

html {
  height: -webkit-fill-available;
}

/* ── 容器 ── */
.xinyu-container {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--space-5);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  display: flex;
  flex-direction: column;
}

/* ── 首页头部 ── */
.xinyu-header {
  text-align: center;
  padding: var(--space-10) 0 var(--space-6);
}

.xinyu-header h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 6px;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: var(--space-2);
}

/* ── 配额条 ── */
.quota-bar {
  display: inline-block;
  background: var(--accent-soft);
  border: 1px solid rgba(240,192,64,0.3);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-4);
  font-size: 13px;
  color: var(--accent);
  margin-top: var(--space-3);
}

/* ── 角色卡片 v1.1 ── */
.char-card {
  background: linear-gradient(180deg, var(--bg-surface) 0%, rgba(26,26,58,0.9) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);          /* 从 --radius-md 升级 */
  padding: var(--space-5) var(--space-4);   /* 左右增加 */
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);              /* 从 --shadow-sm 升级 */
  min-height: 44px;
  position: relative;                        /* 为选中标记定位 */
  overflow: hidden;
}

/* 悬停态：增强发光 */
.char-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-light);
  box-shadow: 0 6px 24px rgba(124,92,191,0.35);
  background: linear-gradient(180deg, var(--primary-bg) 0%, var(--bg-surface) 100%);
}

/* 点击态：短暂收缩 */
.char-card:active {
  transform: scale(0.96);
  transition-duration: 150ms;
}

/* 选中态：高亮边框 + 选中标记 */
.char-card.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary), var(--shadow-glow);
}

.char-card.active::after {
  content: '✓';
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  width: 22px;
  height: 22px;
  background: var(--primary);
  border-radius: 50%;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(124,92,191,0.4);
}

/* ── 性格标签系统 ── */
.char-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1);            /* 4px */
  margin-top: var(--space-2);     /* 8px — 与头衔的间距 */
  min-height: 22px;               /* 占位防止布局偏移 */
}

.char-tag {
  font-size: 11px;
  line-height: 1.4;
  padding: 2px var(--space-2);    /* 2px 8px */
  border-radius: var(--radius-full);
  background: var(--primary-bg);
  color: var(--primary-light);
  border: 1px solid rgba(124, 92, 191, 0.2);
  white-space: nowrap;
  max-width: 64px;                /* 防止超长标签撑开 */
  overflow: hidden;
  text-overflow: ellipsis;
  transition: all var(--transition-fast);
}

/* 悬停时标签微微高亮 */
.char-card:hover .char-tag {
  background: rgba(124, 92, 191, 0.25);
  border-color: rgba(124, 92, 191, 0.4);
}

/* 当没有标签时隐藏占位 */
.char-tags:empty {
  display: none;
}

/* ── 角色简介预览 ── */
.char-brief {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: var(--space-1);
  line-height: 1.3;
  cursor: pointer;
  transition: color var(--transition-fast);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 14px;  /* 占位防布局偏移 */
}

.char-brief:hover {
  color: var(--text-secondary);
}

.char-brief:empty {
  display: none;
}

/* ── 头像加载占位 ── */
.char-avatar {
  position: relative;
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-2);
}

.char-avatar-placeholder {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--bg-hover);
  animation: avatarPulse 1.5s ease-in-out infinite;
  z-index: 0;
}

.char-avatar-img {
  position: relative;
  z-index: 1;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid rgba(124, 92, 191, 0.3);
  transition: all var(--transition-normal);
}

/* 加载完成隐藏占位 */
.char-avatar-img.loaded + .char-avatar-placeholder,
.char-avatar-img.loaded ~ .char-avatar-placeholder {
  display: none;
}

.char-card:hover .char-avatar-img {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-glow);
}

@keyframes avatarPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ── 角色选择加载态 ── */
.char-card.loading {
  pointer-events: none;
  position: relative;
}

.char-card.loading .char-avatar-img {
  animation: pulseGlow 1s ease-in-out infinite;
}

.char-card.loading::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(0, 0, 0, 0.3);
  z-index: 1;
}

.char-card.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  border: 3px solid rgba(124, 92, 191, 0.3);
  border-top-color: var(--primary-light);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
  z-index: 2;
}

.char-grid.loading .char-card:not(.loading) {
  opacity: 0.4;
  pointer-events: none;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(124, 92, 191, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(124, 92, 191, 0); }
}

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

/* ── 骨架屏错误状态 ── */
.char-avatar-img.error,
.skeleton-error {
  display: flex !important;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background: rgba(124, 92, 191, 0.15);
  border-radius: 50%;
  width: 56px;
  height: 56px;
}

/* ── 视图切换动画 ── */
.view-transition {
  animation: viewFadeOut 200ms ease forwards;
}

.view-enter {
  animation: viewFadeIn 300ms ease forwards;
}

@keyframes viewFadeOut {
  from { opacity: 1; transform: scale(1); }
  to { opacity: 0; transform: scale(0.95); }
}

@keyframes viewFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* 卡片缩放作为动画起点 */
.char-card.zoom-out {
  transition: transform 200ms ease, opacity 200ms ease;
  transform: scale(1.08);
  opacity: 0;
}

/* ── 奇数卡片布局优化 (2+2+1) ── */
.char-card:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  max-width: 48%;
  margin: 0 auto;
  width: 100%;
}

.char-grid.grid-odd-5 .char-card:last-child {
  grid-column: 1 / -1;
  max-width: 48%;
  margin: 0 auto;
  width: 100%;
}

/* ── 角色详情 Sheet ── */
.char-sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 100;
  display: flex;
  align-items: flex-end;
  animation: sheetFadeIn 200ms ease;
}

.char-sheet-overlay.hidden {
  display: none;
}

.char-sheet-overlay.closing .char-sheet {
  transform: translateY(100%);
  transition: transform 250ms ease;
  opacity: 0;
}

.char-sheet {
  background: var(--bg-surface);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-2) var(--space-6) calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  max-height: 80vh;
  overflow-y: auto;
  animation: sheetSlideIn 300ms cubic-bezier(0.32, 0.72, 0, 1);
  position: relative;
  text-align: center;
}

.char-sheet-handle {
  width: 32px;
  height: 4px;
  border-radius: 2px;
  background: var(--text-muted);
  margin: 0 auto var(--space-4);
  opacity: 0.5;
}

.char-sheet-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-4);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.char-sheet-close:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.char-sheet-avatar-img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary);
  box-shadow: var(--shadow-glow);
  margin-bottom: var(--space-3);
}

.char-sheet-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.char-sheet-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.char-sheet-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.char-sheet-tags .char-tag {
  font-size: 12px;
  padding: 3px var(--space-2);
}

.char-sheet-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: left;
  margin-bottom: var(--space-5);
  white-space: pre-wrap;
}

.char-sheet-cta {
  width: 100%;
  height: 48px;
  background: linear-gradient(135deg, var(--primary) 0%, #5a3d99 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.char-sheet-cta:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

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

@keyframes sheetSlideIn {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* ── 聊天视图 ── */
.chat-view {
  padding: 0;
}

.xinyu-chat-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--border);
  min-height: 48px;
}

.back-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  padding: 12px 14px;
  margin: -8px -10px;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
}

.back-btn:hover {
  color: var(--text-primary);
}

.char-info {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  min-width: 0;
}

.char-info > div {
  min-width: 0;
  overflow: hidden;
}

.char-avatar-sm-img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid rgba(124,92,191,0.3);
  flex-shrink: 0;
}

.char-name-sm {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.char-title-sm {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.quota-chip {
  background: var(--accent-soft);
  border: 1px solid rgba(240,192,64,0.3);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
  min-height: 28px;
  display: flex;
  align-items: center;
}

/* ── 消息区 ── */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  min-height: 55vh;
  max-height: calc(100vh - 180px);
}

.msg {
  display: flex;
  will-change: transform, opacity;
}

/* 仅新消息执行入场动画 */
.msg.animate-in {
  animation: messageIn var(--msg-enter-duration) ease forwards;
}

.msg.user {
  justify-content: flex-end;
}

.msg.assistant {
  justify-content: flex-start;
}

/* 消息间距差异化 */
.msg {
  margin-bottom: var(--msg-gap-cross);
}

.msg.user + .msg.user {
  margin-top: calc(-1 * var(--space-1));
  margin-bottom: var(--msg-gap-same);
}

.msg.assistant + .msg.assistant {
  margin-top: calc(-1 * var(--space-1));
  margin-bottom: var(--msg-gap-same);
}

.msg.user + .msg.assistant,
.msg.assistant + .msg.user {
  margin-top: 0;
  margin-bottom: var(--msg-gap-cross);
}

.msg.system + .msg,
.msg + .msg.system {
  margin-top: 0;
  margin-bottom: var(--msg-gap-system);
}

.msg-bubble {
  max-width: 82%;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 15px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  display: inline-flex;
  align-items: flex-start;
  gap: var(--space-1);
}

.msg.user .msg-bubble {
  background: var(--msg-user-gradient);
  color: #fff;
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-sm) var(--radius-lg);
  max-width: 82%;
  box-shadow: var(--shadow-sm), 0 2px 8px rgba(124,92,191,0.3);
}

.msg.assistant .msg-bubble {
  background: var(--msg-assistant-bg);
  color: var(--text-primary);
  border-radius: var(--radius-sm) var(--radius-lg) var(--radius-lg) var(--radius-lg);
}

/* ── 打字指示器（角色化） ── */
.typing-indicator-custom {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 14px 18px;
  background: var(--msg-assistant-bg);
  border-radius: var(--radius-sm) var(--radius-lg) var(--radius-lg) var(--radius-lg);
}

.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: typingBounce 1.4s ease-in-out 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; }
}

/* 渐进式等待文本 */
.typing-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: var(--space-1);
  text-align: left;
  animation: fadeIn var(--transition-fast) ease;
}

/* ── 输入栏 ── */
.chat-input {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: rgba(0,0,0,0.3);
  border-top: 1px solid var(--border);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom, 0px));
}

.chat-input input {
  flex: 1;
  height: 44px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
  transition: all var(--transition-fast);
}

.chat-input input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(124,92,191,0.2);
}

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

.chat-input input:disabled {
  opacity: 0.4;
}

.chat-input button {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: none;
  background: linear-gradient(135deg, var(--primary) 0%, #5a3d99 100%);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  font-weight: 600;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.chat-input button:hover:not(:disabled) {
  box-shadow: var(--shadow-glow);
}

.chat-input button:disabled {
  opacity: 0.3;
  cursor: default;
}

/* ── 工具栏 ── */
.chat-toolbar {
  display: flex;
  padding: var(--space-2) var(--space-4);
  background: rgba(0,0,0,0.2);
  border-top: 1px solid var(--border);
  min-height: 40px;
  align-items: center;
}

.img-gen-btn {
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
}

.img-gen-btn:hover:not(:disabled) {
  background: var(--primary-bg);
  border-color: var(--primary);
  color: var(--primary-light);
}

.img-gen-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

/* ── 场景选择器 ── */
.scenario-selector {
  position: relative;
  display: inline-block;
}

.scenario-btn {
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  white-space: nowrap;
}

.scenario-btn:hover {
  background: var(--primary-bg);
  border-color: var(--primary);
  color: var(--primary-light);
}

.scenario-picker {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  max-width: 280px;
  max-height: 280px;
  overflow-y: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 50;
  animation: fadeIn 150ms ease;
  padding: var(--space-2);
}

.scenario-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  color: var(--text-primary);
  transition: background var(--transition-fast);
  white-space: nowrap;
}

.scenario-option:hover {
  background: var(--bg-hover);
}

.scenario-option.active {
  background: var(--primary-bg);
  color: var(--primary-light);
  font-weight: 600;
}

.scenario-option.active::after {
  content: '✓';
  margin-left: auto;
  color: var(--primary-light);
  font-weight: 700;
}

/* 小屏适配 */
@media (max-width: 374px) {
  .scenario-btn {
    height: 32px;
    padding: 0 12px;
    font-size: 12px;
    min-height: 32px;
  }
  .scenario-picker {
    min-width: 160px;
    max-width: 220px;
  }
  .scenario-option {
    font-size: 13px;
    padding: var(--space-2) var(--space-3);
  }
}

/* ── 配额耗尽界面 ── */
.quota-exceeded {
  text-align: center;
  padding: var(--space-4);
}

.quota-rest {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  animation: fadeIn 250ms ease;
}

.quota-rest-icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
  filter: drop-shadow(0 0 12px rgba(240,192,64,0.3));
}

.quota-rest-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.quota-rest-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.quota-rest-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
}

.quota-btn {
  display: inline-flex;
  align-items: center;
  height: 44px;
  padding: 0 var(--space-6);
  border-radius: 22px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.quota-btn:first-child {
  background: linear-gradient(135deg, var(--primary) 0%, #5a3d99 100%);
  color: #fff;
  border: none;
}

.quota-btn-outline {
  background: transparent;
  color: var(--primary-light);
  border: 1px solid var(--primary);
}

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

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

/* ── 消息入场动画 ── */
@keyframes messageIn {
  from {
    opacity: 0;
    transform: translateY(var(--msg-enter-distance));
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── 输入框抖动动画 ── */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  50% { transform: translateX(4px); }
  75% { transform: translateX(-4px); }
}

.chat-input.shake button {
  animation: shake 300ms ease;
}

/* ── 配额警告条（剩余5条） ── */
.quota-warning {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-size: 13px;
  text-align: center;
  margin: var(--space-2) var(--space-4);
  animation: fadeIn 250ms ease;
}

/* ── 底部链接 ── */
.daily-report-link {
  text-align: center;
  margin-top: var(--space-5);
  font-size: 13px;
  color: var(--text-secondary);
}

.daily-report-link a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.daily-report-link a:hover {
  color: #f5d060;
}

/* ── 滚动条 ── */
.chat-messages::-webkit-scrollbar {
  width: 4px;
}
.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}
.chat-messages::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
}

/* ── 图片消息气泡 ── */
.image-bubble {
  background: rgba(255,255,255,0.05);
  padding: var(--space-2);
  text-align: center;
  max-width: 90%;
  border-radius: var(--radius-md);
}

.chat-image {
  max-width: 100%;
  max-height: 320px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-normal), transform var(--transition-fast);
}

.chat-image:hover {
  transform: scale(1.02);
}

.chat-image.loaded {
  opacity: 1;
}

.image-caption {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

/* ── 图片预览弹窗 ── */
.image-preview-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  cursor: pointer;
  animation: fadeIn 150ms ease;
}

.image-preview-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}

.image-preview-content img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
}

.image-preview-close {
  position: absolute;
  top: -40px;
  right: 0;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
  padding: 4px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-preview-close:hover {
  opacity: 1;
}

/* ── 语音播放按钮 ── */
.speak-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  padding: 6px 8px;
  margin: -4px -4px -4px 4px;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
  vertical-align: middle;
  line-height: 1;
  flex-shrink: 0;
  border-radius: 50%;
  min-width: 36px;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.speak-btn:hover {
  opacity: 1;
}

.speak-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.msg-text {
  flex: 1;
}

/* ── 系统消息气泡 ── */
.msg.system {
  justify-content: center;
}
.msg.system .msg-bubble {
  background: var(--msg-system-bg);
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  max-width: 70%;
  border-radius: var(--radius-md);
  box-shadow: none;
  padding: var(--space-2) var(--space-3);
}

/* ── 错误消息气泡 ── */
.msg.assistant.error .msg-bubble {
  background: var(--msg-error-bg);
  color: var(--msg-error-color);
  border-left: var(--msg-error-border);
  padding-left: calc(var(--space-3) - 4px + 4px);
}

/* ── 字符计数器 ── */
.input-counter {
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-2);
  font-size: 11px;
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition-fast);
  line-height: 1;
}
.input-counter.warning {
  color: var(--error);
}

/* ── 时间戳 ── */
.msg-time {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 2px;
  padding: 0 var(--space-1);
  line-height: 1;
}
.msg.user .msg-time {
  text-align: right;
  padding-right: var(--space-1);
}
.msg.assistant .msg-time {
  text-align: left;
  padding-left: var(--space-1);
}

/* ── 长消息截断 ── */
.msg-text.collapsed {
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: var(--msg-collapse-max-lines);
  -webkit-box-orient: vertical;
  max-height: var(--msg-collapse-max-height);
  transition: max-height var(--transition-normal) ease;
}
.msg-text.expanded {
  max-height: var(--msg-expand-max-height);
  display: block;
  -webkit-line-clamp: unset;
  transition: max-height var(--transition-normal) ease;
}
.expand-btn {
  display: inline-block;
  background: none;
  border: none;
  color: var(--primary-light);
  font-size: 12px;
  cursor: pointer;
  padding: var(--space-1) 0;
  margin-top: var(--space-1);
  transition: color var(--transition-fast);
  flex-shrink: 0;
  line-height: 1;
}
.expand-btn:hover {
  color: var(--primary);
}
.expand-btn::before {
  content: '⋯ ';
}

/* ── 空状态引导 ── */
.welcome-suggestions {
  margin-top: var(--space-4);
  padding: 0 var(--space-4);
  animation: fadeIn var(--transition-normal) ease;
}
.welcome-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
  text-align: center;
}
.suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}
.suggestion-chip {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.suggestion-chip:hover {
  background: var(--primary-bg);
  border-color: var(--primary);
  color: var(--primary-light);
}
.suggestion-chip:active {
  transform: scale(0.96);
}

/* ── 角色状态指示器 ── */
.char-status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 1px 0 2px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.status-dot.online {
  background: var(--success, #4ecdc4);
  box-shadow: 0 0 6px rgba(78, 205, 196, 0.5);
}

.status-dot.offline {
  background: var(--text-secondary, #8888a0);
}

.status-text {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1;
}

/* ── 纯CSS实现的状态点 ── */
/* ── 响应式：极小屏 (< 375px) 如 iPhone SE ── */
@media (max-width: 374px) {
  .xinyu-container {
    padding: var(--space-3);
  }
  .xinyu-header {
    padding: var(--space-6) 0 var(--space-4);
  }
  .xinyu-header h1 {
    font-size: 24px;
    letter-spacing: 4px;
  }
  .subtitle {
    font-size: 13px;
  }
  .char-grid {
    gap: 8px;
  }
  .char-card {
    padding: var(--space-4) 8px;
    border-radius: var(--radius-md);
  }
  .char-avatar {
    width: 44px;
    height: 44px;
  }
  .char-avatar-img {
    width: 44px;
    height: 44px;
  }
  .char-name {
    font-size: 14px;
  }
  .char-title {
    font-size: 11px;
  }
  .char-tag {
    font-size: 10px;
    padding: 1px 6px;
    max-width: 52px;
  }
  .char-tags {
    gap: 2px;
    margin-top: var(--space-1);
  }
  .char-brief {
    font-size: 10px;
    min-height: 12px;
  }
  .char-card:last-child:nth-child(odd) {
    max-width: 46%;
  }
  .chat-messages {
    min-height: 50vh;
    max-height: calc(100vh - 160px);
    padding: var(--space-3);
  }
  .msg-bubble {
    max-width: 88%;
    padding: 10px 12px;
    font-size: 14px;
  }
  .msg.user .msg-bubble {
    max-width: 85%;
  }
  .chat-input {
    padding: var(--space-2) var(--space-3);
    padding-bottom: calc(var(--space-2) + env(safe-area-inset-bottom, 0px));
  }
  .chat-input input {
    height: 40px;
    font-size: 15px;
  }
  .chat-input button {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
  .chat-toolbar {
    padding: var(--space-1) var(--space-3);
    min-height: 36px;
  }
  .img-gen-btn {
    height: 32px;
    padding: 0 12px;
    font-size: 12px;
  }
  .quota-rest {
    padding: var(--space-6) var(--space-3);
  }
  .quota-rest-actions {
    flex-direction: column;
    align-items: center;
  }
  .quota-btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}

/* ── 响应式：小屏手机 (375px ~ 414px) 如 iPhone SE/14/11 Pro Max ── */
@media (min-width: 375px) and (max-width: 414px) {
  .xinyu-header {
    padding: var(--space-8) 0 var(--space-5);
  }
  .xinyu-header h1 {
    font-size: 26px;
  }
  .chat-messages {
    min-height: 50vh;
    max-height: calc(100vh - 170px);
  }
  .msg-bubble {
    font-size: 15px;
  }
}

/* ── 响应式：横屏手机 ── */
@media (max-height: 480px) and (orientation: landscape) {
  .xinyu-header {
    padding: var(--space-4) 0 var(--space-3);
  }
  .xinyu-header h1 {
    font-size: 22px;
    letter-spacing: 4px;
  }
  .subtitle {
    display: none;
  }
  .quota-bar {
    margin-top: var(--space-2);
    font-size: 12px;
    padding: 2px 12px;
  }
  .char-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    padding: var(--space-2) 0;
  }
  .char-card {
    padding: var(--space-3) 10px;
  }
  .char-avatar {
    width: 40px;
    height: 40px;
  }
  .char-avatar-img {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-1);
  }
  .char-name {
    font-size: 13px;
  }
  .char-title {
    font-size: 10px;
  }
  .char-card:last-child:nth-child(odd) {
    grid-column: auto;
    max-width: 100%;
    margin: 0;
  }
  .chat-messages {
    min-height: 30vh;
    max-height: calc(100vh - 140px);
  }
  .daily-report-link {
    margin-top: var(--space-3);
    font-size: 12px;
  }
}

/* ── 响应式：平板 (481px ~ 768px) ── */
@media (min-width: 481px) {
  .xinyu-container {
    max-width: 600px;
    padding: var(--space-6);
  }
  .char-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-4);
  }
  .char-card {
    padding: var(--space-6) var(--space-5);
    border-radius: var(--radius-xl);
  }
  .char-avatar {
    width: 64px;
    height: 64px;
  }
  .char-avatar-img {
    width: 64px;
    height: 64px;
  }
  .char-card:last-child:nth-child(odd) {
    grid-column: auto;
    max-width: 100%;
    margin: 0;
  }
}

/* ── 响应式：平板大屏 (769px ~ 1024px) ── */
@media (min-width: 769px) {
  .xinyu-container {
    max-width: 720px;
    padding: var(--space-8);
  }
  .char-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-5);
  }
  .char-avatar-img {
    width: 72px;
    height: 72px;
  }
  .char-card:last-child:nth-child(odd) {
    grid-column: auto;
    max-width: 100%;
    margin: 0;
  }
  .xinyu-header h1 {
    font-size: 32px;
  }
}

/* ── 响应式：桌面 (1025px+) ── */
@media (min-width: 1025px) {
  .xinyu-container {
    max-width: 960px;
    padding: var(--space-10);
  }
  .char-grid {
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: var(--space-5);
  }
}

/* ── 暗色模式 Safe Area 适配 ── */
@supports (padding: env(safe-area-inset-top)) {
  .xinyu-chat-header {
    padding-top: calc(var(--space-3) + env(safe-area-inset-top, 0px));
  }
}

/* 分享区域 */
.share-area {
  text-align: center;
  margin: 10px 0;
  padding: 6px 12px;
}
.share-hint {
  color: #888;
  font-size: 12px;
}
.share-btn {
  background: #6c5ce7;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  margin-left: 4px;
}
.share-btn:hover {
  background: #5a4bd1;
}
.share-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: #2d3436;
  color: #dfe6e9;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 9999;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
  transition: opacity 0.3s;
}
.share-toast.hidden {
  opacity: 0;
  pointer-events: none;
}
.share-toast:not(.hidden) {
  opacity: 1;
}

/* ── 消息发送状态指示 ── */
.msg-status-sending {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: statusSpin 0.6s linear infinite;
  flex-shrink: 0;
  align-self: flex-end;
  margin-left: 6px;
}
@keyframes statusSpin {
  to { transform: rotate(360deg); }
}

.msg-status-sent {
  color: #888;
  font-size: 12px;
  align-self: flex-end;
  margin-left: 6px;
  flex-shrink: 0;
  line-height: 1;
}

/* ── 重试按钮 ── */
.retry-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: #f0c040;
  font-size: 12px;
  cursor: pointer;
  border-radius: var(--radius-sm, 10px);
  padding: 2px 10px;
  margin-left: 8px;
  white-space: nowrap;
  transition: background var(--transition-fast, 150ms);
  flex-shrink: 0;
}
.retry-btn:hover {
  background: rgba(240,192,64,0.2);
}

/* ── 新手引导 (Onboarding) ── */
@keyframes onboarding-fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes onboarding-slideUp {
  from { opacity: 0; transform: translateY(40px) scale(0.92); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.onboarding-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.onboarding-overlay.onboarding-visible {
  opacity: 1;
}

.onboarding-card {
  background: linear-gradient(145deg, #1e1e3a 0%, #16162e 100%);
  border: 1px solid rgba(124, 92, 191, 0.3);
  border-radius: var(--radius-xl, 24px);
  padding: 36px 32px 28px;
  max-width: 380px;
  width: 90%;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(124, 92, 191, 0.15);
  opacity: 0;
  transform: translateY(40px) scale(0.92);
  transition: opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1), transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.onboarding-card.onboarding-card-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.onboarding-emoji {
  font-size: 52px;
  line-height: 1;
  margin-bottom: 16px;
}

.onboarding-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary, #f0f0f5);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.onboarding-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary, #8888a0);
  margin-bottom: 20px;
  white-space: pre-line;
}

.onboarding-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}
.onboarding-dot {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.2);
  transition: color 0.25s ease;
}
.onboarding-dot.active {
  color: var(--primary, #7c5cbf);
  text-shadow: 0 0 8px rgba(124, 92, 191, 0.5);
}

.onboarding-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.onboarding-btn {
  padding: 10px 24px;
  border-radius: var(--radius-full, 9999px);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  font-family: inherit;
}

.onboarding-btn-skip {
  background: transparent;
  color: var(--text-secondary, #8888a0);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.onboarding-btn-skip:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary, #f0f0f5);
}

.onboarding-btn-next {
  background: linear-gradient(135deg, var(--primary, #7c5cbf), #5a3d99);
  color: #fff;
  box-shadow: 0 4px 16px rgba(124, 92, 191, 0.3);
}
.onboarding-btn-next:hover {
  box-shadow: 0 6px 24px rgba(124, 92, 191, 0.45);
  transform: translateY(-1px);
}
.onboarding-btn-next:active {
  transform: translateY(0);
}

/* 移动端适配 */
@media (max-width: 480px) {
  .onboarding-card {
    padding: 28px 20px 24px;
    max-width: 340px;
  }
  .onboarding-emoji {
    font-size: 42px;
  }
  .onboarding-title {
    font-size: 20px;
  }
  .onboarding-text {
    font-size: 14px;
  }
  .onboarding-btn {
    padding: 10px 20px;
    font-size: 13px;
  }
}

/* ── 消息操作工具栏（重说 & 评价） ── */
.msg-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  justify-content: flex-end;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.regenerate-btn,
.rate-btn {
  background: var(--primary-bg);
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 13px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  line-height: 1;
}

.regenerate-btn:hover {
  background: rgba(124,92,191,0.25);
  color: var(--primary-light);
  border-color: var(--primary);
}

.rate-btn:hover {
  background: rgba(124,92,191,0.25);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.rate-btn.liked {
  background: rgba(76, 205, 196, 0.15);
  color: var(--success);
  border-color: var(--success);
}

.rate-btn.disliked {
  background: rgba(224, 85, 85, 0.15);
  color: var(--error);
  border-color: var(--error);
}

/* ═════════════════════════════════╗
   登录弹窗 (Login Modal)
   ╚═════════════════════════════════ */

/* 背景遮罩 */
.login-modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 0;
}

/* 容器 */
.login-modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: loginFadeIn 0.25s ease;
}

.login-modal.hidden {
  display: none;
}

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

/* 卡片 — 玻璃态暗色主题 */
.login-modal-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 380px;
  background: linear-gradient(145deg, rgba(26, 26, 58, 0.95), rgba(18, 18, 42, 0.98));
  border: 1px solid rgba(124, 92, 191, 0.25);
  border-radius: var(--radius-xl, 24px);
  padding: 36px 28px 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(124, 92, 191, 0.12);
  animation: loginCardSlideUp 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes loginCardSlideUp {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* 关闭按钮 */
.login-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.login-modal-close:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

/* 头部 */
.login-modal-header {
  text-align: center;
  margin-bottom: 24px;
}

.login-modal-icon {
  font-size: 42px;
  line-height: 1;
  margin-bottom: 12px;
}

.login-modal-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px;
  letter-spacing: 0.5px;
}

.login-modal-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* 表单 */
.login-modal-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-field label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.login-field input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-md, 14px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: all var(--transition-fast);
  box-sizing: border-box;
}

.login-field input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(124, 92, 191, 0.2);
}

.login-field input::placeholder {
  color: var(--text-placeholder);
}

/* 验证码行 */
.login-code-row {
  display: flex;
  gap: 8px;
}

.login-code-row input {
  flex: 1;
  min-width: 0;
  font-size: 18px;
  letter-spacing: 4px;
  text-align: center;
  font-weight: 600;
}

.login-send-code-btn {
  height: 44px;
  padding: 0 16px;
  border-radius: var(--radius-md, 14px);
  border: 1px solid var(--primary);
  background: rgba(124, 92, 191, 0.15);
  color: var(--primary-light);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  font-family: inherit;
  flex-shrink: 0;
}

.login-send-code-btn:hover:not(:disabled) {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 16px rgba(124, 92, 191, 0.3);
}

.login-send-code-btn:disabled {
  opacity: 0.5;
  cursor: default;
}

/* 提交按钮 */
.login-submit-btn {
  width: 100%;
  height: 48px;
  border-radius: var(--radius-full, 9999px);
  border: none;
  background: linear-gradient(135deg, var(--primary), #5a3d99);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  margin-top: 4px;
}

.login-submit-btn:hover:not(:disabled) {
  box-shadow: 0 4px 20px rgba(124, 92, 191, 0.4);
  transform: translateY(-1px);
}

.login-submit-btn:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
}

/* Spinner */
.login-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: loginSpin 0.6s linear infinite;
}

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

/* 错误消息 */
.login-error {
  background: rgba(224, 85, 85, 0.1);
  border: 1px solid rgba(224, 85, 85, 0.3);
  border-radius: var(--radius-sm, 10px);
  padding: 10px 14px;
  font-size: 13px;
  color: #e88;
  text-align: center;
  line-height: 1.4;
}

/* 调试信息 (debug_code) */
.login-debug {
  background: rgba(240, 192, 64, 0.1);
  border: 1px solid rgba(240, 192, 64, 0.25);
  border-radius: var(--radius-sm, 10px);
  padding: 10px 14px;
  font-size: 12px;
  color: var(--accent);
  text-align: center;
  line-height: 1.4;
  word-break: break-all;
}

/* 底部链接 */
.login-modal-footer {
  text-align: center;
  margin-top: 18px;
}

.login-guest-link {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
  cursor: pointer;
}

.login-guest-link:hover {
  color: var(--text-secondary);
}

/* 已登录用户信息区域 */
.login-modal-user {
  text-align: center;
  padding: 8px 0;
}

.login-logout-btn {
  background: rgba(224, 85, 85, 0.1);
  border: 1px solid rgba(224, 85, 85, 0.3);
  color: #e88;
  border-radius: var(--radius-full, 9999px);
  padding: 8px 24px;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  margin-top: 12px;
}

.login-logout-btn:hover {
  background: rgba(224, 85, 85, 0.2);
  border-color: var(--error);
}

/* 小屏适配 */
@media (max-width: 374px) {
  .login-modal-card {
    padding: 28px 20px 24px;
  }
  .login-modal-header h2 {
    font-size: 20px;
  }
  .login-modal-icon {
    font-size: 36px;
  }
  .login-send-code-btn {
    font-size: 12px;
    padding: 0 12px;
  }
}

/* 横屏手机适配 */
@media (max-height: 520px) and (orientation: landscape) {
  .login-modal {
    align-items: flex-start;
    padding-top: 12px;
    overflow-y: auto;
  }
  .login-modal-card {
    padding: 20px 20px 16px;
  }
  .login-modal-header {
    margin-bottom: 14px;
  }
  .login-modal-icon {
    font-size: 28px;
    margin-bottom: 6px;
  }
  .login-modal-header h2 {
    font-size: 18px;
    margin-bottom: 4px;
  }
  .login-modal-subtitle {
    font-size: 12px;
  }
  .login-modal-form {
    gap: 10px;
  }
  .login-field {
    gap: 4px;
  }
  .login-field input {
    height: 38px;
    font-size: 14px;
  }
  .login-send-code-btn {
    height: 38px;
  }
  .login-submit-btn {
    height: 40px;
    font-size: 14px;
  }
}
/* ── Category Filter Tabs ── */
.category-tabs {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  justify-content: center;
  flex-wrap: nowrap;
}

.category-tabs::-webkit-scrollbar {
  display: none;
}

.category-tab {
  flex-shrink: 0;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  user-select: none;
  font-family: inherit;
  outline: none;
}

.category-tab:hover {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.8);
}

.category-tab.active {
  background: linear-gradient(135deg, #a78bfa, #f472b6);
  color: #fff;
  border-color: transparent;
}

@media (max-width: 600px) {
  .category-tabs {
    justify-content: flex-start;
    padding: 10px 12px;
  }
  .category-tab {
    font-size: 12px;
    padding: 5px 14px;
  }
}
/* ═════════════════════════════════╗
   用户资料弹窗 (Profile Modal)
   ╚═════════════════════════════════ */

.profile-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 100;
  display: flex;
  align-items: flex-end;
  animation: sheetFadeIn 200ms ease;
}

.profile-modal-overlay.hidden {
  display: none;
}

.profile-modal {
  background: var(--bg-surface);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-2) var(--space-6) calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  max-height: 85vh;
  overflow-y: auto;
  animation: sheetSlideIn 300ms cubic-bezier(0.32, 0.72, 0, 1);
  position: relative;
}

.profile-modal-handle {
  width: 32px;
  height: 4px;
  border-radius: 2px;
  background: var(--text-muted);
  margin: 0 auto var(--space-4);
  opacity: 0.5;
}

.profile-modal-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-4);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

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

.profile-header {
  text-align: center;
  padding: var(--space-4) 0 var(--space-5);
}

.profile-avatar-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto var(--space-3);
  border: 3px solid var(--primary);
  box-shadow: var(--shadow-glow);
  background: var(--primary-bg);
  color: var(--primary-light);
}

.profile-nickname {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.profile-email {
  font-size: 13px;
  color: var(--text-secondary);
}

.profile-section {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.profile-section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

.profile-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
}

.profile-row-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.profile-row-value {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

.profile-row-value.vip {
  color: var(--accent);
}

.profile-row-value.free {
  color: var(--text-muted);
}

/* Edit nickname */
.profile-nickname-edit {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  justify-content: center;
  margin-bottom: var(--space-1);
}

.profile-nickname-edit input {
  width: 180px;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary);
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  outline: none;
}

.profile-nickname-edit input:focus {
  box-shadow: 0 0 0 3px rgba(124,92,191,0.3);
}

.profile-edit-icon {
  background: none;
  border: none;
  color: var(--primary-light);
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
  min-width: 36px;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.profile-edit-icon:hover {
  background: var(--bg-hover);
}

.profile-save-btn {
  background: linear-gradient(135deg, var(--primary), #5a3d99);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  padding: 8px 24px;
  font-size: 13px;
  cursor: pointer;
  font-weight: 600;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.profile-save-btn:hover {
  box-shadow: var(--shadow-glow);
}

.profile-quota-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.profile-quota-track {
  flex: 1;
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 3px;
  overflow: hidden;
}

.profile-quota-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 3px;
  transition: width var(--transition-normal);
}

.profile-quota-text {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.profile-vip-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: linear-gradient(135deg, rgba(255,215,0,0.15), rgba(255,170,0,0.1));
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: var(--radius-full);
  padding: 4px 14px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}

/* Emoji picker grid */
.profile-emoji-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
  margin-top: var(--space-2);
}

.profile-emoji-option {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: rgba(255,255,255,0.04);
  border: 2px solid transparent;
  transition: all var(--transition-fast);
}

.profile-emoji-option:hover {
  background: var(--primary-bg);
  border-color: var(--primary);
}

.profile-emoji-option.active {
  background: var(--primary-bg);
  border-color: var(--primary);
  box-shadow: 0 0 8px rgba(124,92,191,0.4);
}

/* User avatar button in header */
.user-avatar-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  background: var(--primary-bg);
  color: var(--primary-light);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  margin-left: auto;
}

.user-avatar-btn:hover {
  box-shadow: var(--shadow-glow);
  border-color: var(--primary-light);
  background: rgba(124,92,191,0.3);
}

/* Login button in header */
.user-login-btn {
  background: linear-gradient(135deg, var(--primary), #5a3d99);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  flex-shrink: 0;
  margin-left: auto;
}

.user-login-btn:hover {
  box-shadow: var(--shadow-glow);
}

/* Profile toast */
.profile-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-surface);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  z-index: 200;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  animation: fadeIn 200ms ease;
}

/* User avatar in chat header */
.chat-user-area {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Login status text */
.profile-login-status {
  font-size: 11px;
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: center;
  margin-top: var(--space-1);
}

.profile-guest-status {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: center;
  margin-top: var(--space-1);
}

@media (max-width: 374px) {
  .profile-modal {
    padding: var(--space-2) var(--space-4) var(--space-4);
  }
  .profile-avatar-circle {
    width: 60px;
    height: 60px;
    font-size: 26px;
  }
  .profile-emoji-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}