/* ════════════════════════════════════════════════════════════
   书房 study.html · 书架式入口整理页（#197）
   视觉：纸质手帐风，竖排书脊 + 书架横杆。颜色全部走 theme.css 变量。
   ════════════════════════════════════════════════════════════ */

/* ---- 背景：纯色兜底（body 底色）+ 可换背景图（/api/study-bg，没有就不铺） ----
   z-index 必须 ≥0：写成 -1 会掉到 body 不透明底色后面，上传成功也看不见。 */
.study-bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.55;
}
body > .app {
  position: relative;
  z-index: 1;
}

/* 换背景入口：右上角小图标，不显眼 */
.study-bg-upload-btn {
  position: fixed;
  top: calc(env(safe-area-inset-top) + 14px);
  right: 16px;
  z-index: 5;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 0.5px solid var(--card-border);
  background: color-mix(in srgb, var(--card-surface) 70%, transparent);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.55;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: opacity 0.15s;
}
.study-bg-upload-btn:active { opacity: 0.9; }

.study-body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0 16px max(40px, calc(24px + env(safe-area-inset-bottom)));
}

/* ---- 标题区（无顶栏，靠左，仿主页隐形制式） ---- */
.study-header {
  text-align: left;
  padding: max(20px, calc(env(safe-area-inset-top) + 10px)) 4px 6px;
  margin-bottom: 18px;
}
.study-eyebrow {
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--text-muted);
}
.study-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 400;
  color: var(--text);
  margin-top: 4px;
  letter-spacing: 1px;
}
.study-subtitle {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 6px;
}

/* ---- 书架分组 ---- */
.shelf-group {
  margin-top: 26px;
}
.shelf-group-label {
  text-align: left;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-top: 8px;
}

.shelf-books-row {
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  gap: 6px;
  min-height: 100px;
  padding: 0 8px;
  position: relative;
  z-index: 1;
}

/* ---- 书架横杆：三种可选手感（与主题无关，localStorage: halcyon_shelf） ----
   wood 浅木色 · warm 樱花奶灰那套暖褐 · slate 石板灰那套冷灰 */
:root,
[data-shelf="wood"] {
  --shelf-top: #e8d5bc;
  --shelf-mid: #d4b896;
  --shelf-bot: #c4a57e;
  --shelf-grain: #7a5533;
  --shelf-grain-deep: #5c3d24;
  --shelf-edge: #8a6a45;
}
[data-shelf="warm"] {
  /* 对应主题4 sakura 下「跟主题走」时的暖褐架 */
  --shelf-top: #d9c8b8;
  --shelf-mid: #c4a890;
  --shelf-bot: #a88870;
  --shelf-grain: #705040;
  --shelf-grain-deep: #5a4034;
  --shelf-edge: #705040;
}
[data-shelf="slate"] {
  /* 对应主题5 slate 下「跟主题走」时的冷灰架 */
  --shelf-top: #cfcfcf;
  --shelf-mid: #b4b4b4;
  --shelf-bot: #949494;
  --shelf-grain: #515151;
  --shelf-grain-deep: #3e3e3e;
  --shelf-edge: #515151;
}

.shelf-plank {
  height: 7px;
  border-radius: 1px;
  margin-top: -2px;
  position: relative;
  z-index: 0;
  overflow: hidden;
  background:
    repeating-linear-gradient(
      180deg,
      color-mix(in srgb, var(--shelf-grain) 8%, transparent) 0 1px,
      transparent 1px 5px
    ),
    linear-gradient(180deg,
      var(--shelf-top),
      var(--shelf-mid) 55%,
      var(--shelf-bot));
  box-shadow:
    0 4px 10px color-mix(in srgb, var(--text) 10%, transparent),
    0 1px 0 color-mix(in srgb, var(--shelf-edge) 18%, transparent) inset;
}
.shelf-plank::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--shelf-edge) 18%, transparent),
    transparent 10%,
    transparent 90%,
    color-mix(in srgb, var(--shelf-edge) 14%, transparent));
  opacity: 0.28;
}

/* ---- 书脊基础样式 ---- */
.book-spine {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 5px 5px 2px 2px;
  box-shadow:
    inset 2px 0 0 color-mix(in srgb, white 28%, transparent),
    inset -1px 0 0 color-mix(in srgb, black 12%, transparent),
    0 3px 6px color-mix(in srgb, var(--text) 22%, transparent);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.15s;
  padding: 10px 0;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  font-family: var(--font-family);
}
.book-spine:active { transform: translateY(3px); }

.book-spine-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--book-text, #fff);
  position: relative;
  z-index: 2;
  white-space: nowrap;
}

/* ---- 斜靠的书（参考插画：多数直立，几本微倾） ---- */
.book-lean-l,
.book-lean-r {
  transform-origin: bottom center;
}
.book-lean-l { transform: rotate(-3.5deg); margin-inline: 1px 2px; }
.book-lean-r { transform: rotate(3deg); margin-inline: 2px 1px; }
.book-lean-l:active { transform: rotate(-3.5deg) translateY(3px); }
.book-lean-r:active { transform: rotate(3deg) translateY(3px); }

/* ---- 书脊配色（全部由主题变量派生） ---- */
.book-tone-accent {
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  --book-text: #fff;
}
.book-tone-soft {
  background: color-mix(in srgb, var(--accent-light) 65%, var(--card-surface) 35%);
  --book-text: var(--text);
}
.book-tone-muted {
  background: color-mix(in srgb, var(--text-muted) 55%, var(--bg) 45%);
  --book-text: color-mix(in srgb, var(--text) 82%, var(--bg) 18%);
}
.book-tone-dark {
  background: color-mix(in srgb, var(--text) 68%, var(--accent-dark) 32%);
  --book-text: #fff;
}
.book-tone-paper {
  background: color-mix(in srgb, var(--card-surface) 85%, var(--text-muted) 15%);
  --book-text: var(--text);
}

/* ---- 书脊纹理（CSS 渐变，不用图片） ---- */
.book-tex-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg,
      color-mix(in srgb, white 20%, transparent) 0 1px, transparent 1px 11px),
    repeating-linear-gradient(90deg,
      color-mix(in srgb, white 20%, transparent) 0 1px, transparent 1px 11px);
}
.book-tex-dot::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(color-mix(in srgb, white 26%, transparent) 1.2px, transparent 1.6px);
  background-size: 9px 9px;
}
.book-tex-diag::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(45deg,
    color-mix(in srgb, white 18%, transparent) 0 2px, transparent 2px 10px);
}

/* ---- 书脊尺寸（手写几组，高矮胖瘦不一） ---- */
.book-sz-xs { width: 28px; height: 76px; }
.book-sz-sm { width: 34px; height: 92px; }
.book-sz-md { width: 40px; height: 112px; }
.book-sz-lg { width: 46px; height: 130px; }
.book-sz-xl { width: 36px; height: 104px; }

/* ---- 竖立正体字母（DREAM 一类拉丁书名，逐字直立下摞） ---- */
.book-upright .book-spine-title {
  text-orientation: upright;
  letter-spacing: 1px;
}

/* ---- 躺着的书（共读占位） ---- */
.book-lying {
  writing-mode: horizontal-tb;
  width: 100px;
  height: 32px;
  border-radius: 4px 12px 12px 4px;
  align-self: flex-end;
}
.book-lying .book-spine-title {
  font-size: 12px;
  letter-spacing: 1px;
}

/* ---- 下排三格并列 ---- */
.study-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 30px;
}
.study-group-col {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
/* 固定高度（而非 min-height）：三格里最高的书是 book-sz-md(112px)，
   统一按它定行高，矮书 align-items:flex-end 贴底，书架横杆才能三格齐平 */
.study-group-col .shelf-books-row {
  height: 118px;
  gap: 4px;
  padding: 0 4px;
}
.study-group-col .shelf-group-label {
  font-size: 11px;
}

/* ---- BACK（替代底栏，回客厅） ---- */
.study-back-home {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 36px 4px 8px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}
.study-back-home:active { opacity: 0.65; }
.study-back-home svg {
  display: block;
  flex: none;
}

/* ---- 通用空状态（overlay 内） ---- */
.study-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.study-empty-icon {
  font-size: 30px;
  margin-bottom: 12px;
}
.study-empty-text {
  font-size: 14px;
  line-height: 1.7;
}

/* ---- 速写本：月份切换 ---- */
.sketch-month-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.sketch-month-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 20px;
  line-height: 1;
  padding: 4px 12px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.sketch-month-btn:disabled { opacity: 0.3; cursor: default; }
.sketch-month-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.sketch-content {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
  word-break: break-word;
}
.sketch-content p { margin-bottom: 14px; white-space: pre-wrap; }

/* ---- 梦境列表（复用 dream-view-item，附展开态） ---- */
.dream-view-item.clickable { cursor: pointer; -webkit-tap-highlight-color: transparent; }
.dream-view-preview {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.dream-view-item.expanded .dream-view-preview { display: none; }
.dream-view-item:not(.expanded) .dream-view-content { display: none; }

/* ---- 工具箱列表 ---- */
.toolbox-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toolbox-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--card-surface);
  backdrop-filter: blur(var(--card-blur));
  -webkit-backdrop-filter: blur(var(--card-blur));
  border: 0.5px solid var(--card-border);
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  font-family: var(--font-family);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.12s;
}
.toolbox-item:active { transform: scale(0.98); }
.toolbox-item-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.toolbox-item-arrow {
  margin-left: auto;
  opacity: 0.35;
  flex-shrink: 0;
}

/* ---- 收尾报告 ---- */
.closeout-block { margin-bottom: 22px; }
.closeout-label {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.closeout-summary {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}
.closeout-stats-row {
  display: flex;
  gap: 10px;
}
.closeout-stat {
  flex: 1;
  background: var(--card-surface);
  border: 0.5px solid var(--card-border);
  border-radius: 14px;
  padding: 14px 8px;
  text-align: center;
}
.closeout-stat-num {
  font-family: var(--font-display);
  font-size: 21px;
  color: var(--accent);
}
.closeout-stat-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- 明信片墙（纸质卡片 + 虚线邮戳，不渲染工具 JSON） ---- */
.postcard-wall {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.postcard-card {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 14px;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: 16px 14px;
  border: 0.5px solid var(--card-border);
  border-radius: 6px 16px 16px 6px;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--card-surface) 92%, var(--accent-light) 8%),
      var(--card-surface));
  box-shadow: var(--card-shadow);
  color: inherit;
  font-family: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.postcard-card:active { transform: scale(0.985); }
.postcard-card-stamp {
  width: 76px;
  height: 76px;
  border: 1.5px dashed color-mix(in srgb, var(--accent) 50%, var(--text-muted) 50%);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transform: rotate(-7deg);
  background:
    repeating-linear-gradient(-18deg,
      transparent,
      transparent 7px,
      color-mix(in srgb, var(--accent) 10%, transparent) 7px,
      color-mix(in srgb, var(--accent) 10%, transparent) 8px);
  color: var(--accent-dark);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  line-height: 1.35;
  padding: 6px;
  box-sizing: border-box;
}
.postcard-card-stamp span {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}
.postcard-card-copy { min-width: 0; }
.postcard-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.3px;
}
.postcard-card-preview {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.postcard-card-date {
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.8px;
  color: var(--text-muted);
}

.postcard-sheet {
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--card-surface) 90%, var(--accent-light) 10%),
      var(--card-surface));
  border: 0.5px solid var(--card-border);
  border-radius: 8px 20px 20px 8px;
  box-shadow: var(--card-shadow);
  padding: 22px 20px 26px;
}
.postcard-sheet-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
}
.postcard-sheet-kicker {
  font-size: 10px;
  letter-spacing: 2.4px;
  color: var(--text-muted);
  padding-top: 4px;
}
.postcard-sheet-stamp {
  width: 92px;
  height: 92px;
  border: 1.6px dashed color-mix(in srgb, var(--accent) 55%, var(--text-muted) 45%);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transform: rotate(-8deg);
  background:
    repeating-linear-gradient(-18deg,
      transparent,
      transparent 8px,
      color-mix(in srgb, var(--accent) 12%, transparent) 8px,
      color-mix(in srgb, var(--accent) 12%, transparent) 9px);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  line-height: 1.4;
  padding: 8px;
  box-sizing: border-box;
}
.postcard-sheet-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.5px;
  margin: 0 0 8px;
  line-height: 1.35;
}
.postcard-sheet-meta {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.3px;
  line-height: 1.6;
}
.postcard-sheet-rule {
  height: 1px;
  margin: 18px 0;
  background: repeating-linear-gradient(90deg,
    var(--card-border),
    var(--card-border) 6px,
    transparent 6px,
    transparent 10px);
}
.postcard-sheet-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---- 嵌套 overlay 层级（详情盖在列表 / 收尾盖在工具箱之上）---- */
#ov-postcard-detail,
#ov-closeout,
#ov-voice-settings,
#ov-usage-log,
#ov-gallery-upload,
#ov-gallery-detail {
  z-index: 210;
}

/* ---- gallery：墙面画框（素材图）+ 双列照片墙 ---- */
.study-wall-frame-row {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  padding: 0;
  margin: 0 0 -14px;
  position: relative;
  z-index: 0;
  min-height: 120px;
}

/* 毛毡板：在贴画和画框后面；与画框垂直居中，高度不超过画框；可点进心情月历 */
.study-felt-board {
  position: absolute;
  left: 0;
  right: 10px;
  top: 50%;
  height: 62%;
  transform: translateY(-50%);
  z-index: 0;
  pointer-events: auto;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  border: 0.5px solid color-mix(in srgb, var(--text-muted) 22%, transparent);
  border-radius: 18px;
  padding: 0;
  margin: 0;
  font: inherit;
  color: inherit;
  appearance: none;
  -webkit-appearance: none;
  background:
    radial-gradient(circle at 18% 28%,
      color-mix(in srgb, var(--accent-light) 22%, transparent) 0 1px,
      transparent 1.6px) 0 0 / 7px 7px,
    radial-gradient(circle at 72% 64%,
      color-mix(in srgb, var(--text-muted) 18%, transparent) 0 1px,
      transparent 1.5px) 3px 2px / 9px 9px,
    linear-gradient(165deg,
      color-mix(in srgb, var(--accent-light) 42%, var(--bg) 58%),
      color-mix(in srgb, var(--text-muted) 28%, var(--bg) 72%) 55%,
      color-mix(in srgb, var(--accent) 12%, var(--bg) 88%));
  box-shadow:
    0 2px 10px color-mix(in srgb, var(--text) 10%, transparent),
    inset 0 1px 0 color-mix(in srgb, var(--card-surface) 55%, transparent),
    inset 0 -1px 0 color-mix(in srgb, var(--text) 8%, transparent);
}
.study-felt-board:active {
  transform: translateY(-50%) scale(0.985);
}
.study-scrap {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 8px 8px;
  background: color-mix(in srgb, var(--card-surface) 90%, var(--bg) 10%);
  border: 0.5px solid color-mix(in srgb, var(--card-border) 70%, var(--text-muted) 30%);
  border-radius: 2px;
  box-shadow: 0 3px 8px color-mix(in srgb, var(--text) 10%, transparent);
  box-sizing: border-box;
  z-index: 1;
}
.study-scrap-a {
  left: calc(8% - 10px);
  top: 14%;
  width: 78px;
  aspect-ratio: 3 / 4.1;
  transform: rotate(-3.5deg);
}
.study-scrap-b {
  left: calc(28% - 10px);
  top: 22%;
  width: 64px;
  aspect-ratio: 5 / 3.6;
  transform: rotate(2.5deg);
}
.study-scrap-clip {
  position: absolute;
  top: -6px;
  left: 50%;
  width: 18px;
  height: 9px;
  margin-left: -9px;
  border-radius: 1px;
  /* color-mix 只能两色；三色会被整条丢掉 */
  background: color-mix(in srgb, var(--text-muted) 52%, var(--accent-light) 48%);
  box-shadow: 0 1px 2px color-mix(in srgb, var(--text) 12%, transparent);
}
.study-scrap-rule {
  display: block;
  height: 2px;
  width: 38%;
  border-radius: 1px;
  background: color-mix(in srgb, var(--accent) 55%, #b45858 45%);
}
.study-scrap-block {
  display: block;
  border-radius: 1px;
}
.study-scrap-block.dark {
  height: 7px;
  width: 72%;
  background: color-mix(in srgb, var(--text) 55%, var(--text-muted) 45%);
}
.study-scrap-block.dark.short { width: 58%; height: 6px; }
.study-scrap-block.soft {
  height: 28%;
  min-height: 22px;
  width: 100%;
  background: color-mix(in srgb, var(--accent-light) 70%, var(--card-surface) 30%);
  margin: 2px 0 1px;
}
.study-scrap-lines {
  display: block;
  flex: 1;
  margin-top: 2px;
  background:
    repeating-linear-gradient(
      180deg,
      color-mix(in srgb, var(--text-muted) 45%, transparent) 0 1.5px,
      transparent 1.5px 7px
    );
  opacity: 0.7;
  min-height: 18px;
}
.study-scrap-lines.short { min-height: 14px; }

.study-frame {
  position: relative;
  width: min(56vw, 300px);
  flex: none;
  aspect-ratio: 1056 / 894;
  margin: 0 -12px 0 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  color: var(--text-muted);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transform: rotate(1.2deg);
  z-index: 2; /* 压在毛毡板和贴画前 */
}
.study-frame:active { transform: rotate(1.2deg) translateY(2px); }
/* 框图叠在照片之上，内窗暗缝压住照片边 */
.study-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: url('/assets/images/frame-stars.png') no-repeat center / contain;
}
.study-frame-inner {
  position: absolute;
  left: 15.25%;
  top: 16.0%;
  z-index: 0;
  width: 71.5%;
  height: 63.98%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 0;
  background: color-mix(in srgb, var(--card-surface) 92%, var(--text) 8%);
}
.study-frame-inner > svg {
  color: var(--text-muted);
  opacity: 0.55;
}
.study-frame-inner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
@media (prefers-color-scheme: dark) {
  .study-frame::after { filter: brightness(0.92); }
}

.gallery-wall {
  columns: 2;
  column-gap: 10px;
  padding-bottom: 76px;
}
.gallery-card {
  display: inline-block;
  width: 100%;
  margin: 0 0 10px;
  padding: 0;
  break-inside: avoid;
  border: 0.5px solid var(--card-border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--card-surface);
  box-shadow: var(--card-shadow);
  color: inherit;
  text-align: left;
  font-family: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.gallery-card:active { transform: scale(0.985); }
.gallery-card img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 110px;
  object-fit: cover;
  background: var(--accent-light);
}
.gallery-card-meta { padding: 9px 10px 10px; }
.gallery-card-title {
  overflow: hidden;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.gallery-card-date {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 10px;
  letter-spacing: 0.4px;
}

.gallery-top-action {
  margin-left: auto;
  border: 0;
  background: none;
  color: var(--accent);
  font: 600 14px var(--font-family);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.gallery-top-action:disabled { opacity: 0.45; }

/* gallery 标题类名兼容；顶栏本身已由 .mailbox-ov-top 统一成 chat 制式 */
.gallery-ov-back {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0;
  border: 0;
  background: none;
  color: var(--text);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.gallery-ov-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}
.gallery-form,
.gallery-detail { padding-bottom: 30px; }
.gallery-upload-preview,
.gallery-detail-image {
  display: block;
  width: 100%;
  max-height: 52vh;
  margin-bottom: 20px;
  border-radius: 12px;
  object-fit: contain;
  background: color-mix(in srgb, var(--card-surface) 82%, var(--text-muted) 18%);
}
.gallery-field {
  display: block;
  margin-bottom: 17px;
}
.gallery-field > span,
.gallery-back-label {
  display: block;
  margin-bottom: 7px;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 1px;
}
.gallery-field input,
.gallery-field textarea {
  box-sizing: border-box;
  width: 100%;
  border: 0.5px solid var(--card-border);
  border-radius: 11px;
  outline: none;
  background: var(--card-surface);
  color: var(--text);
  font: 14px/1.65 var(--font-family);
  padding: 11px 12px;
}
.gallery-field textarea { resize: vertical; }
.gallery-detail-date {
  margin: -8px 0 18px;
  color: var(--text-muted);
  font-size: 11px;
}
.gallery-impression {
  min-height: 72px;
  padding: 13px 14px;
  border: 0.5px dashed var(--card-border);
  border-radius: 11px;
  background: color-mix(in srgb, var(--card-surface) 84%, var(--accent-light) 16%);
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.75;
  white-space: pre-wrap;
  word-break: break-word;
}
.gallery-detail-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
  margin-top: 20px;
}
.gallery-action {
  min-height: 42px;
  border: 0.5px solid var(--card-border);
  border-radius: 11px;
  background: var(--card-surface);
  color: var(--text);
  font: 14px var(--font-family);
  cursor: pointer;
}
.gallery-action.primary {
  border-color: transparent;
  background: var(--accent);
  color: white;
}
.gallery-action.danger { color: #b45858; }

/* ── MURMUR 留声机：扁平唱机 SVG，颜色跟 theme (#204) ── */
.study-phonograph {
  margin-left: auto;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0 2px 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  z-index: 2;
  /* 唱机贴到架板上 */
  margin-bottom: -6px;
}
.study-phonograph:active { transform: translateY(2px); }
.study-phonograph-svg {
  display: block;
  width: 104px;
  height: 104px;
  overflow: visible;
}

.murmur-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 4px 0 28px;
}
.murmur-card {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 14px;
  align-items: start;
  width: 100%;
  text-align: left;
  padding: 14px;
  border: 0.5px solid var(--card-border);
  border-radius: 6px 16px 16px 6px;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--card-surface) 92%, var(--accent-light) 8%),
      var(--card-surface));
  box-shadow: var(--card-shadow);
  color: inherit;
  font-family: inherit;
}
.murmur-card-play {
  width: 52px;
  height: 52px;
  border: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-dark) 100%);
  box-shadow: 0 3px 10px color-mix(in srgb, var(--accent) 35%, transparent);
  color: #fff;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  padding: 0;
  font: inherit;
  justify-self: center;
  margin-top: 2px;
  position: relative;
}
.murmur-card-play:active { transform: scale(0.96); }
.murmur-card-play.playing {
  box-shadow: 0 2px 14px color-mix(in srgb, var(--accent) 50%, transparent);
}
.murmur-card-play .murmur-icon-play,
.murmur-card-play .murmur-icon-pause {
  flex-shrink: 0;
}
.murmur-card-play .murmur-icon-play {
  display: block;
  /* 几何居中：不额外偏移，三角 path 已在 viewBox 内对齐 */
}
.murmur-card-play .murmur-icon-pause { display: none; }
.murmur-card-play.playing .murmur-icon-play { display: none; }
.murmur-card-play.playing .murmur-icon-pause { display: block; }
.murmur-card-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.murmur-card-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.murmur-card-title {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.2px;
  text-align: left;
  cursor: text;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.murmur-card-title:focus {
  outline: none;
  color: var(--accent-dark);
}
.murmur-card-title.is-default {
  font-weight: 500;
  color: var(--text-light);
}
.murmur-card-time {
  flex-shrink: 0;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.4px;
  color: var(--text-muted);
}
.murmur-card-expand {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.18s ease, color 0.15s ease;
}
.murmur-card-expand:active { color: var(--accent); }
.murmur-card.open .murmur-card-expand {
  transform: rotate(180deg);
  color: var(--accent);
}
.murmur-card-meta {
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 0.6px;
  color: var(--text-muted);
}
.murmur-card-transcript {
  margin-top: 10px;
  padding: 10px 12px;
  border: 0.5px solid var(--card-border);
  border-radius: 10px;
  background: color-mix(in srgb, var(--card-surface) 94%, var(--accent-light) 6%);
  color: var(--text);
  font-size: 13px;
  font-style: italic;
  font-weight: 400;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
  cursor: pointer;
}

/* voice settings in toolbox */
.voice-settings {
  padding: 8px 4px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.voice-settings-block {
  padding: 16px 14px;
  border: 0.5px solid var(--card-border);
  border-radius: 14px;
  background: var(--card-surface);
  box-shadow: var(--card-shadow);
}
.voice-settings-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.voice-settings-meter {
  height: 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text-muted) 18%, transparent);
  overflow: hidden;
}
.voice-settings-meter > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  width: 0%;
  transition: width 0.25s ease;
}
.voice-settings-nums {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.voice-settings-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.voice-settings-row input {
  flex: 1;
  min-width: 0;
  height: 40px;
  border: 0.5px solid var(--card-border);
  border-radius: 10px;
  background: color-mix(in srgb, var(--card-surface) 92%, var(--accent-light) 8%);
  color: var(--text);
  padding: 0 12px;
  font: 14px var(--font-family);
}
.voice-settings-row button {
  height: 40px;
  padding: 0 14px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  font: 14px var(--font-family);
  cursor: pointer;
}
.voice-settings-hint {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ---- 工具箱 · API 调用日志 ---- */
.usage-log {
  padding: 4px 4px 28px;
}
.usage-log-lead {
  margin: 0 0 14px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}
.usage-log-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 18px;
}
.usage-log-stat {
  padding: 10px 8px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--card-surface) 88%, var(--text) 12%);
  border: 0.5px solid color-mix(in srgb, var(--card-border) 70%, transparent);
  text-align: center;
}
.usage-log-stat-n {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.usage-log-stat-l {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  color: var(--text-muted);
}
.usage-log-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.usage-log-row {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 8px 10px;
  padding: 11px 2px;
  border-bottom: 0.5px solid color-mix(in srgb, var(--card-border) 55%, transparent);
}
.usage-log-row:last-child { border-bottom: none; }
.usage-log-time {
  font-size: 12px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}
.usage-log-body { min-width: 0; }
.usage-log-model {
  font-size: 12px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 3px;
}
.usage-log-model .src {
  color: var(--text-muted);
  margin-right: 4px;
}
.usage-log-nums {
  font-size: 11px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  line-height: 1.45;
  word-break: break-all;
}
.usage-log-nums .usage-icon {
  display: inline-block;
  vertical-align: -1px;
  margin-right: 2px;
  opacity: 0.85;
}
.usage-log-empty {
  padding: 28px 8px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ---- 心情月历（手账格） ---- */
.mood-cal-scroll {
  /* 保留 mailbox-ov-scroll 顶栏占位，只调左右和下边 */
  padding-left: 16px;
  padding-right: 16px;
  padding-bottom: 28px;
}
.mood-cal {
  border-radius: 16px;
  padding: 14px 12px 16px;
  background:
    linear-gradient(color-mix(in srgb, var(--text-muted) 10%, transparent) 1px, transparent 1px) 0 0 / 18px 18px,
    linear-gradient(90deg, color-mix(in srgb, var(--text-muted) 10%, transparent) 1px, transparent 1px) 0 0 / 18px 18px,
    color-mix(in srgb, var(--card-surface) 88%, var(--bg) 12%);
  border: 0.5px solid color-mix(in srgb, var(--card-border) 80%, transparent);
  box-shadow: var(--card-shadow);
}
.mood-cal-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}
.mood-cal-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.2px;
}
.mood-cal-nav-btn {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 10px;
  background: color-mix(in srgb, var(--text-muted) 10%, transparent);
  color: var(--text);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.mood-cal-nav-btn:active { transform: scale(0.94); }
.mood-cal-week {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
}
.mood-cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px 4px;
}
.mood-cal-cell {
  min-height: 78px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 2px 0 4px;
}
.mood-cal-cell.is-empty { visibility: hidden; }
.mood-cal-cell.is-today .mood-cal-day {
  color: var(--accent);
  font-weight: 700;
}
.mood-cal-day {
  font-size: 11px;
  color: var(--text-light);
  line-height: 1.2;
}
.mood-cal-faces {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}
.mood-cal-face {
  width: 32px;
  height: 32px;
  display: block;
  border-radius: 9px;
  overflow: hidden;
  box-shadow: 0 1px 3px color-mix(in srgb, var(--text) 12%, transparent);
}
.mood-cal-face .mood-face-svg { display: block; }
.mood-cal-face.is-empty {
  background: transparent;
  box-shadow: none;
  border: 1.5px dashed color-mix(in srgb, var(--text-muted) 22%, transparent);
  border-radius: 9px;
  box-sizing: border-box;
}
.mood-cal-face.is-round,
.mood-cal-face.is-round.is-empty {
  border-radius: 50%;
}
.mood-cal-note {
  margin: 14px 2px 0;
  text-align: center;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  line-height: 1.5;
}
.mood-cal-loading {
  padding: 48px 12px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}