/* ========================================
   屿屋 · 样式
   主题：雾岛晨雾（A，淡色起步）
   林青 · 海岛 · 雾气
   ======================================== */

:root {
  /* ---- 雾岛晨雾 · 默认主题 ---- */
  --c-bg: #EDF2EE;
  --c-bg-soft: #F4F7F3;
  --c-mist: #DCE5DD;
  --c-card: #FFFFFF;
  --c-card-hover: #FAFCFA;
  --c-accent: #5B8A7A;
  --c-accent-soft: #A8C4BC;
  --c-accent-deep: #3D6659;
  --c-warm: #D4B896;
  --c-warm-deep: #B89770;
  --c-ink: #2D3A36;
  --c-ink-soft: #5C6A66;
  --c-ink-faint: #8A9591;
  --c-line: #D8E0D9;
  --c-line-soft: #E8ECE8;
  --c-danger: #B85C5C;

  --shadow-soft: 0 2px 12px rgba(60, 80, 70, 0.06);
  --shadow-card: 0 4px 20px rgba(60, 80, 70, 0.08);
  --shadow-float: 0 8px 32px rgba(60, 80, 70, 0.15);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --font-display: "Cormorant Garamond", "Noto Serif SC", serif;
  --font-body: "Noto Serif SC", "Cormorant Garamond", serif;
  --font-mono: "JetBrains Mono", monospace;

  --trans: 260ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* 深夜礁岛 */
[data-theme="night"] {
  --c-bg: #1A2826;
  --c-bg-soft: #243634;
  --c-mist: #2F4340;
  --c-card: #243634;
  --c-card-hover: #2A3E3B;
  --c-accent: #7BA89C;
  --c-accent-soft: #5B8A7A;
  --c-accent-deep: #9BC4B8;
  --c-warm: #D4B896;
  --c-ink: #E8EDE9;
  --c-ink-soft: #B8C4BE;
  --c-ink-faint: #7A8682;
  --c-line: #334744;
  --c-line-soft: #2A3E3B;
}

/* 雾中航行 */
[data-theme="voyage"] {
  --c-bg: #2C3E3A;
  --c-bg-soft: #354A45;
  --c-mist: #3A4F4A;
  --c-card: #3A4F4A;
  --c-card-hover: #425A55;
  --c-accent: #8EB4A8;
  --c-accent-soft: #6A9689;
  --c-accent-deep: #AACCBF;
  --c-warm: #C9B59C;
  --c-ink: #F0F4F0;
  --c-ink-soft: #C8D2CE;
  --c-ink-faint: #8A9590;
  --c-line: #4A605B;
  --c-line-soft: #3F544F;
}

/* ---------- 基础 ---------- */
* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow-x: hidden;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--trans), color var(--trans);
}

/* 雾气背景纹理 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 10%, var(--c-accent-soft) 0%, transparent 45%),
    radial-gradient(ellipse at 85% 80%, var(--c-warm) 0%, transparent 40%),
    radial-gradient(ellipse at 50% 50%, var(--c-mist) 0%, transparent 60%);
  opacity: 0.25;
  z-index: -1;
  pointer-events: none;
  animation: mist-drift 30s ease-in-out infinite alternate;
}

@keyframes mist-drift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-2%, 2%) scale(1.05); }
}

.hidden { display: none !important; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  outline: none;
  transition: border-color var(--trans);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--c-accent);
}

/* ---------- 登录层 ---------- */
.login-veil {
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-mist) 100%);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.login-mist {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(168, 196, 188, 0.4) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(212, 184, 150, 0.2) 0%, transparent 40%);
  animation: mist-drift 20s ease-in-out infinite alternate;
}

.login-card {
  position: relative;
  background: var(--c-card);
  border-radius: var(--radius-xl);
  padding: 48px 40px 36px;
  box-shadow: var(--shadow-float);
  text-align: center;
  min-width: 300px;
  max-width: 90vw;
  animation: fade-in-up 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

.login-island {
  margin-bottom: 12px;
  opacity: 0.9;
}

.login-title {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 500;
  margin: 0;
  letter-spacing: 0.15em;
  color: var(--c-accent-deep);
}

.login-sub {
  color: var(--c-ink-faint);
  font-size: 13px;
  margin: 4px 0 28px;
  letter-spacing: 0.1em;
  font-style: italic;
  font-family: var(--font-display);
}

.pwd-input {
  width: 100%;
  padding: 12px 16px;
  margin-bottom: 12px;
  font-size: 14px;
  letter-spacing: 0.1em;
  text-align: center;
  background: var(--c-bg-soft);
  border-color: var(--c-line);
}

.pwd-btn {
  width: 100%;
  padding: 12px;
  background: var(--c-accent);
  color: white;
  border-radius: var(--radius-md);
  font-size: 14px;
  letter-spacing: 0.3em;
  transition: background var(--trans), transform 150ms;
}

.pwd-btn:hover { background: var(--c-accent-deep); }
.pwd-btn:active { transform: scale(0.98); }

.login-hint {
  margin-top: 12px;
  color: var(--c-danger);
  font-size: 12px;
  height: 16px;
}

/* ---------- 主体 ---------- */
.app { min-height: 100vh; padding-bottom: 80px; }

/* 顶栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(237, 242, 238, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-line-soft);
}

[data-theme="night"] .topbar, [data-theme="voyage"] .topbar {
  background: rgba(26, 40, 38, 0.75);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.logo-mini { flex-shrink: 0; }

.brand {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  color: var(--c-accent-deep);
  letter-spacing: 0.1em;
}

.date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-ink-faint);
  letter-spacing: 0.05em;
}

/* 分区切换 */
.tabs {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.tab {
  padding: 6px 14px;
  font-size: 14px;
  color: var(--c-ink-soft);
  border-radius: var(--radius-sm);
  transition: all var(--trans);
  position: relative;
  letter-spacing: 0.05em;
}

.tab:hover { color: var(--c-accent); background: var(--c-bg-soft); }

.tab.active {
  color: var(--c-accent-deep);
  font-weight: 500;
}

.tab.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -3px;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--c-accent);
  border-radius: 2px;
}

.topbar-right {
  display: flex;
  gap: 4px;
  align-items: center;
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--c-ink-soft);
  transition: all var(--trans);
}

.icon-btn:hover {
  color: var(--c-accent);
  background: var(--c-bg-soft);
}

/* 手机上隐藏分区名，换图标 */
@media (max-width: 640px) {
  .topbar { padding: 10px 12px; gap: 6px; }
  .date { display: none; }
  .tabs { flex: 1; justify-content: center; gap: 0; }
  .tab { padding: 6px 8px; font-size: 13px; }
  .topbar-right .icon-btn:not(#menu-btn):not(#search-btn) {
    display: none;
  }
}

/* ---------- 搜索条 ---------- */
.search-bar {
  padding: 12px 20px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--c-line-soft);
  background: var(--c-bg-soft);
}

.search-bar input {
  flex: 1;
  background: var(--c-card);
}

.search-filters select {
  background: var(--c-card);
}

/* ---------- 主舞台 ---------- */
.stage {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px;
  animation: fade-in 400ms ease;
}

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

/* 视图通用标题 */
.view-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-line-soft);
}

.view-title {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 400;
  margin: 0;
  color: var(--c-accent-deep);
  letter-spacing: 0.1em;
}

.view-title-cn {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--c-ink-faint);
  margin-left: 12px;
  letter-spacing: 0.3em;
}

.view-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-ink-faint);
}

/* 过滤器行 */
.filter-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.chip {
  padding: 4px 12px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: 100px;
  font-size: 12px;
  color: var(--c-ink-soft);
  cursor: pointer;
  transition: all var(--trans);
}

.chip:hover { border-color: var(--c-accent); color: var(--c-accent); }
.chip.active {
  background: var(--c-accent);
  color: white;
  border-color: var(--c-accent);
}

/* ---------- 记忆卡片网格 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.memo-card {
  position: relative;
  background: var(--c-card);
  border-radius: var(--radius-md);
  padding: 18px 20px 16px;
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  transition: all var(--trans);
  border: 1px solid var(--c-line-soft);
  overflow: hidden;
}

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

.memo-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--c-accent-soft);
  opacity: 0.6;
}

.memo-card.pinned::before { background: var(--c-warm); opacity: 1; }
.memo-card.resolved { opacity: 0.6; }

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.card-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-ink);
  line-height: 1.4;
  flex: 1;
}

.card-summary {
  font-size: 13px;
  color: var(--c-ink-soft);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 10px;
  border-top: 1px dashed var(--c-line-soft);
}

.card-tags {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  flex: 1;
  min-width: 0;
}

.tag {
  font-size: 11px;
  padding: 1px 8px;
  background: var(--c-bg-soft);
  color: var(--c-ink-soft);
  border-radius: 3px;
  letter-spacing: 0.05em;
}

.tag.domain { background: var(--c-accent-soft); color: var(--c-accent-deep); }

.card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-ink-faint);
  flex-shrink: 0;
}

/* 情感坐标小点 */
.emo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 0 2px var(--c-card), 0 0 0 3px var(--c-line-soft);
}

/* ---------- 碎碎念 ---------- */
.chatter-feed {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chatter-item {
  display: flex;
  gap: 12px;
  animation: fade-in 300ms ease;
}

.chatter-item.mine { flex-direction: row-reverse; }

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--c-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  color: white;
  font-size: 14px;
  flex-shrink: 0;
  font-weight: 500;
}

.avatar.wu { background: var(--c-warm); }

.bubble-wrap {
  max-width: 75%;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chatter-item.mine .bubble-wrap { align-items: flex-end; }

.bubble {
  background: var(--c-card);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  line-height: 1.6;
  font-size: 14px;
  word-wrap: break-word;
}

.chatter-item.mine .bubble {
  background: var(--c-accent);
  color: white;
}

.bubble-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-ink-faint);
  padding: 0 4px;
}

.bubble-actions {
  display: flex;
  gap: 8px;
  font-size: 11px;
  color: var(--c-ink-faint);
  padding: 0 4px;
  flex-wrap: wrap;
}

.bubble-actions button {
  color: inherit;
  padding: 2px 4px;
}
.bubble-actions button:hover { color: var(--c-accent); }

.bubble-actions .btn-ask-luyu-chatter {
  color: var(--c-accent-deep);
  font-weight: 500;
  letter-spacing: 0.05em;
}
.bubble-actions .btn-ask-luyu-chatter:hover {
  color: var(--c-accent);
  text-shadow: 0 0 8px rgba(0,0,0,0.05);
}
.bubble-actions .btn-ask-luyu-chatter:disabled {
  opacity: 0.5;
  cursor: wait;
}

.comments {
  margin-top: 6px;
  padding: 8px 12px;
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--c-accent-soft);
  font-size: 13px;
}

.comment {
  padding: 4px 0;
  color: var(--c-ink-soft);
}
.comment strong {
  color: var(--c-accent);
  font-weight: 500;
  margin-right: 6px;
}

/* 碎碎念输入 */
.chatter-compose {
  position: sticky;
  bottom: 20px;
  max-width: 640px;
  margin: 24px auto 0;
  background: var(--c-card);
  border-radius: var(--radius-lg);
  padding: 12px;
  box-shadow: var(--shadow-card);
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.chatter-compose textarea {
  flex: 1;
  min-height: 40px;
  max-height: 140px;
  resize: none;
  border: none;
  padding: 8px;
  background: none;
}

.chatter-compose textarea:focus { border: none; }

.chatter-compose button {
  background: var(--c-accent);
  color: white;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  letter-spacing: 0.1em;
}

/* ---------- 他的心 ---------- */
.heart-sections {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.heart-section {
  background: var(--c-card);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-soft);
}

.heart-section h3 {
  font-family: var(--font-display);
  font-size: 22px;
  margin: 0 0 12px;
  color: var(--c-accent-deep);
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--c-line-soft);
  padding-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.heart-section h3 small {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--c-ink-faint);
  letter-spacing: 0.2em;
  font-weight: normal;
}

.heart-item {
  padding: 10px 0;
  border-bottom: 1px dashed var(--c-line-soft);
  cursor: pointer;
  transition: color var(--trans);
}

.heart-item:last-child { border-bottom: none; }
.heart-item:hover { color: var(--c-accent); }

.heart-item h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 500;
}

.heart-item p {
  margin: 0;
  font-size: 13px;
  color: var(--c-ink-soft);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.heart-item time {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-ink-faint);
}

/* ---------- 他的心 · 回复 ---------- */
.heart-replies {
  margin-top: 16px;
  padding: 12px 0;
  border-top: 1px dashed var(--c-line-soft);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.heart-reply {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.heart-reply.mine {
  flex-direction: row-reverse;
}

.heart-reply .reply-who {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--c-accent-soft);
  color: var(--c-accent-deep);
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--font-display);
}

.heart-reply.mine .reply-who {
  background: var(--c-warm);
  color: white;
}

.heart-reply .reply-body {
  max-width: calc(100% - 42px);
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.heart-reply.mine .reply-body {
  align-items: flex-end;
}

.heart-reply .reply-content {
  padding: 7px 11px;
  border-radius: 12px;
  background: var(--c-bg-soft);
  font-size: 13px;
  line-height: 1.6;
  word-wrap: break-word;
  white-space: pre-wrap;
}

.heart-reply.mine .reply-content {
  background: var(--c-accent);
  color: white;
}

.heart-reply .reply-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-ink-faint);
  padding: 0 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.heart-reply .reply-del {
  background: none;
  color: var(--c-ink-faint);
  font-size: 10px;
  padding: 2px 4px;
  opacity: 0.6;
}
.heart-reply .reply-del:hover {
  color: var(--c-danger);
  opacity: 1;
}

.heart-reply-compose {
  margin-top: 14px;
  display: flex;
  gap: 8px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.heart-reply-compose .btn-ask-luyu {
  width: 100%;
  background: linear-gradient(135deg, var(--c-accent) 0%, var(--c-accent-deep) 100%);
  color: white;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
  border: none;
  cursor: pointer;
  transition: all var(--trans);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.heart-reply-compose .btn-ask-luyu:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.1);
}
.heart-reply-compose .btn-ask-luyu:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.heart-reply-compose textarea {
  flex: 1;
  min-height: 40px;
  max-height: 120px;
  padding: 8px 10px;
  font-size: 13px;
  resize: none;
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  line-height: 1.5;
}

.heart-reply-compose #heart-reply-send {
  background: var(--c-accent);
  color: white;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.heart-reply-compose #heart-reply-send:hover {
  background: var(--c-accent-deep);
}

.heart-reply-compose #heart-reply-send:disabled {
  opacity: 0.5;
}

.luyu-pending {
  margin-top: 10px;
  padding: 10px 14px;
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  color: var(--c-ink-soft);
  font-size: 12px;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 8px;
  font-style: italic;
}

/* ---------- 玩具箱 ---------- */
.toy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.toy-card {
  aspect-ratio: 1 / 1.2;
  background: var(--c-card);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: all var(--trans);
  position: relative;
  overflow: hidden;
}

.toy-card:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-float);
}

.toy-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--c-accent-soft), var(--c-warm));
  opacity: 0.2;
}

.toy-card h4 {
  position: relative;
  margin: 0 0 4px;
  font-size: 15px;
  color: var(--c-ink);
}

.toy-card p {
  position: relative;
  margin: 0;
  font-size: 11px;
  color: var(--c-ink-faint);
  font-family: var(--font-mono);
}

.toy-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--c-ink-faint);
  font-size: 14px;
  font-style: italic;
  font-family: var(--font-display);
}

/* ---------- 档案 ---------- */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--c-card);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-soft);
}

.stat-card h4 {
  font-family: var(--font-display);
  font-size: 16px;
  margin: 0 0 16px;
  color: var(--c-ink-soft);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 44px;
  color: var(--c-accent-deep);
  line-height: 1;
  font-weight: 500;
}

.stat-label {
  font-size: 12px;
  color: var(--c-ink-faint);
  margin-top: 4px;
  letter-spacing: 0.1em;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px dashed var(--c-line-soft);
  font-size: 13px;
}
.stat-row:last-child { border-bottom: none; }
.stat-row .val {
  font-family: var(--font-mono);
  color: var(--c-accent);
}

/* ---------- FAB ---------- */
.fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--c-accent);
  color: white;
  box-shadow: 0 6px 24px rgba(91, 138, 122, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--trans);
  z-index: 60;
}

.fab:hover {
  transform: rotate(90deg) scale(1.05);
  background: var(--c-accent-deep);
}

/* ---------- 抽屉 ---------- */
.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--trans);
}

.drawer-mask.open {
  opacity: 1;
  pointer-events: auto;
}

.drawer {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: min(380px, 90vw);
  background: var(--c-bg-soft);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.12);
  z-index: 201;
  transform: translateX(100%);
  transition: transform 320ms cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  padding: 20px;
}

.drawer.open { transform: translateX(0); }

.drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--c-line);
}

.drawer-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.1em;
  color: var(--c-accent-deep);
}

.drawer-head .icon-btn {
  font-size: 24px;
  line-height: 1;
  color: var(--c-ink-faint);
}

.drawer-section {
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line-soft);
}

.drawer-section:last-child { border: none; }

.drawer-section h4 {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--c-ink-soft);
  letter-spacing: 0.2em;
  font-weight: 500;
  text-transform: uppercase;
}

/* Todo */
.todo-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  animation: fade-in 200ms ease;
}

.todo-item input[type="checkbox"] {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--c-accent);
  border-radius: 4px;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  padding: 0;
}

.todo-item input[type="checkbox"]:checked {
  background: var(--c-accent);
}

.todo-item input[type="checkbox"]:checked::after {
  content: "✓";
  color: white;
  font-size: 12px;
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -55%);
}

.todo-item.done span {
  text-decoration: line-through;
  color: var(--c-ink-faint);
}

.todo-item span { flex: 1; cursor: text; }

.todo-item .del {
  opacity: 0;
  color: var(--c-danger);
  font-size: 16px;
  line-height: 1;
  padding: 0 4px;
  transition: opacity var(--trans);
}

.todo-item:hover .del { opacity: 0.6; }
.todo-item .del:hover { opacity: 1; }

.todo-input-row {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.todo-input-row input {
  flex: 1;
  padding: 6px 10px;
  font-size: 13px;
}

.todo-input-row button {
  width: 32px;
  background: var(--c-accent);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 18px;
  line-height: 1;
}

/* 主题选择 */
.theme-picker {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.theme-chip {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--c-bg-soft);
  box-shadow: 0 0 0 1px var(--c-line);
  transition: all var(--trans);
}

.theme-chip:hover { transform: scale(1.1); }
.theme-chip.active {
  box-shadow: 0 0 0 2px var(--c-accent);
}

.inline-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-ink-soft);
  cursor: pointer;
}

/* ghost 按钮 */
.ghost-btn {
  display: block;
  width: 100%;
  padding: 10px;
  margin-bottom: 6px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--c-ink);
  transition: all var(--trans);
  letter-spacing: 0.1em;
}

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

.ghost-btn.danger {
  color: var(--c-danger);
  border-color: var(--c-danger);
}
.ghost-btn.danger:hover {
  background: var(--c-danger);
  color: white;
}

.solid-btn {
  padding: 8px 20px;
  background: var(--c-accent);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 13px;
  letter-spacing: 0.1em;
}

/* 连接状态 */
.conn-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 13px;
}

.conn-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-ink-faint);
  flex-shrink: 0;
}
.conn-dot.ok { background: var(--c-accent); box-shadow: 0 0 8px var(--c-accent); }

.conn-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-ink-faint);
}

.hint-text {
  font-size: 11px;
  color: var(--c-ink-faint);
  margin: 8px 0 0;
  font-style: italic;
}

.form-label {
  font-size: 11px;
  color: var(--c-ink-soft);
  letter-spacing: 0.1em;
  margin-top: 10px;
  margin-bottom: 4px;
  display: block;
  font-weight: 500;
}

.drawer-section input[type="text"],
.drawer-section input[type="password"],
.drawer-section select {
  width: 100%;
  margin-bottom: 2px;
  background: var(--c-card);
  font-size: 12px;
  padding: 7px 10px;
}

/* ---------- 模态框 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
}

.modal-card {
  position: relative;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  background: var(--c-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  display: flex;
  flex-direction: column;
  animation: fade-in-up 280ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.modal-head, .modal-foot {
  padding: 16px 20px;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--c-line-soft);
}

.modal-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--c-accent-deep);
  letter-spacing: 0.1em;
}

.modal-body {
  padding: 20px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-body label {
  font-size: 12px;
  color: var(--c-ink-soft);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
  display: block;
}

.modal-body input, .modal-body textarea, .modal-body select {
  width: 100%;
  background: var(--c-bg-soft);
}

.modal-body textarea {
  min-height: 120px;
  resize: vertical;
  font-family: var(--font-body);
  line-height: 1.6;
}

.modal-foot {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  border-top: 1px solid var(--c-line-soft);
}

/* 情感坐标选择器 */
.emo-picker {
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-top: 8px;
}

.emo-canvas {
  width: 100%;
  aspect-ratio: 1;
  max-width: 240px;
  margin: 0 auto;
  background: conic-gradient(
    from 0deg,
    #F4C48C 0deg,       /* 高唤醒愉悦 - 兴奋 */
    #F4E48C 90deg,      /* 高唤醒负面 - 愤怒/紧张 */
    #A8B4C4 180deg,     /* 低唤醒负面 - 悲伤/疲惫 */
    #A8C4BC 270deg,     /* 低唤醒愉悦 - 平静/温柔 */
    #F4C48C 360deg
  );
  border-radius: 50%;
  position: relative;
  cursor: crosshair;
  opacity: 0.6;
  border: 2px solid var(--c-line);
}

.emo-canvas::before {
  content: "";
  position: absolute;
  top: 50%; left: 0; right: 0;
  height: 1px;
  background: var(--c-ink-soft);
  opacity: 0.3;
}
.emo-canvas::after {
  content: "";
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: var(--c-ink-soft);
  opacity: 0.3;
}

.emo-pointer {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-accent-deep);
  border: 2px solid white;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transform: translate(-50%, -50%);
  pointer-events: none;
  transition: all 150ms;
}

.emo-labels {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--c-ink-faint);
  margin-top: 8px;
  font-family: var(--font-mono);
}

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

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.3;
  font-family: var(--font-display);
}

.empty-state p {
  font-size: 14px;
  font-style: italic;
  font-family: var(--font-display);
  letter-spacing: 0.1em;
}

/* 选择器 */
.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
}

.choice-btn {
  padding: 12px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--trans);
  text-align: center;
  font-size: 13px;
}

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

/* ---------- 移动端适配 ---------- */
@media (max-width: 640px) {
  .stage { padding: 16px 12px; }
  .view-title { font-size: 28px; }
  .card-grid { grid-template-columns: 1fr; gap: 12px; }
  .heart-sections { grid-template-columns: 1fr; }
  .fab { right: 16px; bottom: 16px; width: 48px; height: 48px; }
  .modal { padding: 12px; }
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--c-line);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--c-accent-soft); }

/* 选中色 */
::selection {
  background: var(--c-accent-soft);
  color: var(--c-accent-deep);
}

/* ========== 书房 ========== */
.selection-popover {
  position: absolute;
  z-index: 530;
  display: flex;
  gap: 4px;
  padding: 6px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: 100px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
  animation: fade-in 150ms ease;
}
.selection-popover button {
  padding: 6px 10px;
  font-size: 12px;
  border-radius: 100px;
  background: var(--c-bg-soft);
  color: var(--c-ink);
  white-space: nowrap;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
}
.selection-popover button:hover {
  background: var(--c-accent);
  color: white;
}
.selection-popover button:first-child {
  background: var(--c-accent);
  color: white;
}
.selection-popover button:first-child:hover {
  background: var(--c-accent-deep);
}
.selection-popover button:last-child {
  padding: 6px 10px;
  opacity: 0.6;
}
.selection-popover button:last-child:hover {
  background: var(--c-danger);
  color: white;
  opacity: 1;
}

.study-overlay {
  position: fixed;
  inset: 0;
  background: var(--c-bg);
  z-index: 500;
  overflow: auto;
  animation: fade-in 280ms ease;
}

/* 书架 */
.study-shelf {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

.study-shelf-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-line);
  margin-bottom: 32px;
}

.study-shelf-head h2 {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--c-accent-deep);
  letter-spacing: 0.15em;
  margin: 0;
}

.study-shelf-head > div {
  display: flex;
  gap: 12px;
  align-items: center;
}

.shelf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}

.book-spine {
  position: relative;
  aspect-ratio: 3 / 4.2;
  background: linear-gradient(145deg, var(--c-accent) 0%, var(--c-accent-deep) 100%);
  border-radius: 4px 10px 10px 4px;
  box-shadow:
    inset 3px 0 0 rgba(0,0,0,0.2),
    inset 6px 0 0 rgba(255,255,255,0.1),
    var(--shadow-card);
  cursor: pointer;
  transition: all var(--trans);
  overflow: hidden;
  padding: 24px 18px 16px 26px;
  color: white;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.book-spine:hover {
  transform: translateY(-6px) rotateY(-4deg);
  box-shadow:
    inset 3px 0 0 rgba(0,0,0,0.2),
    inset 6px 0 0 rgba(255,255,255,0.1),
    var(--shadow-float);
}

.book-spine::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(255,255,255,0.1), transparent 60%);
  pointer-events: none;
}

.book-spine-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.05em;
  color: white;
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-spine-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.1em;
}

.book-del {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0,0,0,0.3);
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--trans);
}

.book-spine:hover .book-del { opacity: 1; }
.book-del:hover { background: var(--c-danger); color: white; }

/* 阅读器 */
.reader-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  height: 100vh;
  position: relative;
}

.reader-pane {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background: var(--c-bg-soft);
  border-right: 1px solid var(--c-line);
}

.reader-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-card);
}

.reader-title {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
}

.reader-title strong {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--c-accent-deep);
  letter-spacing: 0.05em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chapter-select {
  flex: 1;
  max-width: 280px;
  padding: 4px 8px;
  font-size: 12px;
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
}

.reader-tools { display: flex; gap: 4px; }
.reader-tools .icon-btn { font-size: 14px; font-family: var(--font-mono); }

.reader-content {
  flex: 1;
  overflow-y: auto;
  padding: 32px 48px;
  font-family: var(--font-body);
  white-space: pre-wrap;
  color: var(--c-ink);
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
  scroll-behavior: smooth;
}

.reader-progress {
  padding: 6px 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-ink-faint);
  border-top: 1px solid var(--c-line-soft);
  background: var(--c-card);
}

/* 聊天面板 */
.chat-pane {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: var(--c-card);
  transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.chat-pane.folded { transform: translateX(100%); }

.chat-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--c-line);
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--c-accent-deep);
  letter-spacing: 0.1em;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chat-hint {
  text-align: center;
  color: var(--c-ink-faint);
  font-family: var(--font-display);
  font-style: italic;
  padding: 40px 20px;
  font-size: 13px;
  letter-spacing: 0.1em;
}

.chat-msg {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  animation: fade-in 200ms ease;
}

.chat-msg.mine { flex-direction: row-reverse; }

.chat-msg .avatar {
  width: 28px;
  height: 28px;
  font-size: 12px;
  flex-shrink: 0;
}

.chat-body {
  max-width: calc(100% - 40px);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chat-msg.mine .chat-body { align-items: flex-end; }

.chat-bubble {
  padding: 8px 12px;
  border-radius: 14px;
  background: var(--c-bg-soft);
  font-size: 13px;
  line-height: 1.6;
  word-wrap: break-word;
  white-space: pre-wrap;
}

.chat-msg.mine .chat-bubble {
  background: var(--c-accent);
  color: white;
}

.chat-msg.pending .chat-bubble {
  padding: 10px 14px;
  min-width: 40px;
}

.chat-msg-foot {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-ink-faint);
  padding: 0 4px;
}

.chat-msg.mine .chat-msg-foot { flex-direction: row-reverse; }

.star-btn {
  color: var(--c-ink-faint);
  font-size: 13px;
  padding: 0 2px;
  transition: all 150ms;
}

.star-btn.starred {
  color: var(--c-warm);
  text-shadow: 0 0 8px var(--c-warm);
  transform: scale(1.2);
}

.star-btn:hover { color: var(--c-warm); }

/* 打字动画 */
.dots { display: inline-flex; gap: 3px; }
.dots i {
  width: 5px; height: 5px;
  background: var(--c-ink-soft);
  border-radius: 50%;
  animation: dot-bounce 1.2s infinite ease-in-out;
}
.dots i:nth-child(2) { animation-delay: 0.2s; }
.dots i:nth-child(3) { animation-delay: 0.4s; }

@keyframes dot-bounce {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

.chat-input-row {
  display: flex;
  gap: 8px;
  padding: 12px;
  /* 加底部安全区距离，避开手机底部手势条 */
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--c-line);
  align-items: flex-end;
}

.chat-input-row textarea {
  flex: 1;
  min-height: 36px;
  max-height: 120px;
  padding: 8px 10px;
  font-size: 13px;
  resize: none;
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  line-height: 1.5;
}

.chat-input-row textarea:focus {
  border-color: var(--c-accent);
}

.chat-input-row button {
  width: 36px;
  height: 36px;
  background: var(--c-accent);
  color: white;
  border-radius: 50%;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--trans);
}

.chat-input-row button:hover { background: var(--c-accent-deep); }
.chat-input-row button:active { transform: scale(0.95); }

/* 折叠后的浮动球 */
.chat-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--c-accent);
  color: white;
  font-size: 20px;
  box-shadow: var(--shadow-float);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 550;
  transition: all var(--trans);
}

.chat-pane.folded ~ .chat-fab { display: flex; }
.chat-fab:hover { transform: scale(1.08); }

/* Toast */
.yuwu-toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 10px 20px;
  background: var(--c-accent-deep);
  color: white;
  border-radius: 100px;
  font-size: 13px;
  letter-spacing: 0.1em;
  box-shadow: var(--shadow-float);
  z-index: 9999;
  opacity: 0;
  transition: all 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
  pointer-events: none;
}

.yuwu-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 移动端：阅读器竖排、聊天变抽屉 */
@media (max-width: 900px) {
  .reader-layout {
    grid-template-columns: 1fr;
  }

  /* 聊天面板不铺满整屏，底部留大段空白避开系统手势条+浏览器栏 */
  .chat-pane {
    position: fixed;
    right: 0;
    top: 0;
    /* 关键：底部整体向上抬 100px，彻底避开 iPhone 底部 */
    bottom: 100px;
    height: auto;
    width: min(340px, 92vw);
    z-index: 560;
    box-shadow: -6px 0 24px rgba(0,0,0,0.15);
    border-bottom-left-radius: 18px;
    overflow: hidden;
  }

  .reader-content {
    padding: 20px 16px 140px;  /* 底部留空间给悬浮条 */
  }

  /* 聊天面板内部输入区收紧 */
  .chat-input-row {
    padding: 10px 12px 14px;
  }

  /* 阅读器顶部在小屏挤得慌，退出按钮放底部更顺手 */
  .reader-head {
    padding: 10px 12px;
    gap: 8px;
  }
  .reader-head .reader-title strong {
    font-size: 16px;
  }
  /* 顶部那排的退出和字号按钮小屏隐藏，改用底部悬浮条 */
  .reader-tools #btn-close-book {
    display: none;
  }

  /* 阅读器底部悬浮条显示 */
  .reader-bottom-bar {
    display: flex !important;
  }

  /* 底部聊天折叠时的浮动球位置上移 */
  .chat-fab {
    display: none !important; /* 移动端有底部悬浮条，不再需要这个浮球 */
  }
}

/* 阅读器底部悬浮返回条（只在移动端显示） */
.reader-bottom-bar {
  display: none;
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  /* 离屏幕底部足够远，避开 iPhone 手势条 + Safari 地址栏 */
  bottom: calc(30px + env(safe-area-inset-bottom, 20px));
  z-index: 520;
  gap: 10px;
  align-items: center;
  background: var(--c-card);
  padding: 8px 10px;
  border-radius: 100px;
  box-shadow: var(--shadow-float), 0 8px 32px rgba(0,0,0,0.15);
  border: 1px solid var(--c-line);
}
.reader-bottom-bar button {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--c-bg-soft);
  color: var(--c-ink);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
}
.reader-bottom-bar button:active {
  transform: scale(0.9);
  background: var(--c-accent);
  color: white;
}
.reader-bottom-bar .bb-close {
  background: var(--c-accent);
  color: white;
}
.reader-bottom-bar .bb-close:active {
  background: var(--c-accent-deep);
}