/* 默认浅色模式 */
:root {
  --theme: #8C3EFF;
  --theme-light: rgba(140, 62, 255, 0.15);
  --today: #E74C3C;
  --today-light: rgba(231, 76, 60, 0.2);
  --bg: #ffffff;
  --card-bg: #E7E7E8;
  --border: #E7E7E8;
  --text: #1f2328;
  --text-muted: #656d76;
  --code-bg: #E7E7E8;
}

/* 深色模式 */
[data-theme="dark"] {
  --bg: #0d1117;
  --card-bg: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --code-bg: #161b22;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.page {
  min-height: 100vh;
  width: 100%;
  margin: 0;
  padding: 1rem 1.5rem;
  display: flex;
  flex-direction: column;
}

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

.theme-toggle {
  display: flex;
  align-items: center;
}

/* Switch 样式：小图标 + 胶囊轨道 */
.theme-switch {
  display: inline-flex;
  padding: 2px;
  background: var(--border);
  border-radius: 999px;
  gap: 0;
}

.theme-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}

.theme-switch .theme-btn:first-child {
  margin-right: 0;
}

.theme-btn .theme-icon {
  display: block;
}

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

.theme-btn.is-active {
  color: #fff;
  background: var(--theme);
}

[data-theme="dark"] .theme-switch .theme-btn {
  color: #fff;
}

[data-theme="dark"] .theme-switch .theme-btn:hover {
  color: #fff;
  opacity: 0.9;
}

[data-theme="dark"] .theme-switch .theme-btn.is-active {
  color: #fff;
}

.site-title {
  color: var(--text);
}

[data-theme="dark"] .site-title {
  color: #fff;
}

.logo-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
}

.logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 400;
}

.main-wrap {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2rem;
  overflow: hidden;
}

@media (max-width: 900px) {
  .main-wrap {
    grid-template-columns: 1fr;
  }
}

.main {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar {
  position: relative;
  z-index: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  overflow-y: auto;
}

.card {
  background: transparent;
  padding: 1.25rem 0;
}

.card-title {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.author-name,
.author-intro,
.author-links {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
}

.author-links a {
  color: var(--theme);
  text-decoration: none;
}

.author-links a:hover {
  text-decoration: underline;
}

.author-extra {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.author-icons {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.author-icon {
  display: inline-flex;
  color: var(--text-muted);
  transition: color 0.2s;
}

.author-icon:hover {
  color: var(--theme);
}

.author-icon svg {
  display: block;
}

[data-theme="dark"] .author-icon {
  color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .author-icon:hover {
  color: #fff;
}

.sidebar-copyright {
  margin: 1rem 0 0;
  padding-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: transparent;
  border-radius: 6px;
  text-decoration: none;
  transition: color 0.2s;
}

.tag:hover,
.tag.is-active {
  color: var(--theme);
}

[data-theme="dark"] .tag {
  color: #fff;
}

[data-theme="dark"] .tag:hover,
[data-theme="dark"] .tag.is-active {
  color: #fff;
}

/* Heatmap */
.day-breadcrumb {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.day-breadcrumb a {
  color: var(--theme);
  text-decoration: none;
}

.day-breadcrumb a:hover {
  text-decoration: underline;
}

.day-breadcrumb .sep {
  margin: 0 0.35rem;
}

.article-page {
  max-width: 100%;
}

.article-back {
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

.article-back a {
  color: var(--theme);
  text-decoration: none;
}

.article-back a:hover {
  text-decoration: underline;
}

.heatmap-section {
  flex-shrink: 0;
  margin-bottom: 1.5rem;
}

.year-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.heatmap-wrap {
  width: 100%;
}

.year-tab {
  padding: 0.4rem 0.9rem 0.65rem;
  font-size: 16px;
  color: var(--text);
  background: transparent;
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: color 0.2s;
  position: relative;
}

.year-tab:hover {
  opacity: 0.9;
}

.year-tab.is-active {
  color: var(--text);
  background: transparent;
}

[data-theme="dark"] .year-tab {
  color: #fff;
}

[data-theme="dark"] .year-tab.is-active {
  color: #fff;
}

.year-tab.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0.25rem;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  background: currentColor;
}

.heatmap-year {
  display: none;
}

.heatmap-year.is-active {
  display: block;
}

.heatmap-grid {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  width: 100%;
}

.heatmap-month-row {
  display: flex;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.5rem;
  align-items: center;
}

.heatmap-labels.heatmap-months-placeholder {
  min-width: 2.5rem;
  flex-shrink: 0;
}

.heatmap-month-cells {
  flex: 1;
  min-width: 0;
  display: flex;
  gap: 2px;
}

.heatmap-month-cells .month-cell {
  flex: 1;
  min-width: 0;
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
}

.heatmap-cells {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.heatmap-labels.heatmap-days {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  font-size: 0.7rem;
  color: var(--text-muted);
  min-width: 2.5rem;
}

.heatmap-week {
  display: flex;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.heatmap-week .cell,
.heatmap-week .cell.empty {
  flex: 1;
  min-width: 0;
}

.cell {
  aspect-ratio: 3 / 2;
  min-width: 4px;
  min-height: 4px;
  border-radius: 3px;
  background: var(--border);
  display: block;
  text-decoration: none;
  transition: background 0.15s;
  border: none;
  outline: none;
}

.cell:hover,
.cell:focus,
.cell.is-selected,
.cell.is-today {
  border: none;
  outline: none;
}

.cell.empty {
  background: rgba(0, 0, 0, 0.06);
  cursor: default;
}

[data-theme="dark"] .heatmap-wrap .cell.empty {
  background: rgba(48, 54, 61, 0.4);
}

/* 方格权重按紫色变淡：1 条浅、2 条中、3 条及以上深 */
.cell.has-data[data-count="1"] {
  background: rgba(140, 62, 255, 0.2);
}

.cell.has-data[data-count="2"] {
  background: rgba(140, 62, 255, 0.4);
}

.cell.has-data:not([data-count="1"]):not([data-count="2"]) {
  background: rgba(140, 62, 255, 0.65);
}

.cell.has-data:hover {
  background: rgba(140, 62, 255, 0.75);
}

.cell.is-today {
  background: var(--today);
}

.cell.is-today.has-data {
  background: var(--today);
  color: #fff;
}

.heatmap-wrap .cell.is-selected,
.heatmap-wrap .cell.is-selected.has-data,
.heatmap-wrap .cell.is-selected.is-today {
  background: #1677FF !important;
  color: #fff;
}

.heatmap-wrap .cell.is-selected.has-data:hover,
.heatmap-wrap .cell.is-selected:hover {
  background: rgba(22, 119, 255, 0.85) !important;
}

/* Day section：标题在滚动区外，始终固钉在顶部 */
.day-section {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 0;
}

.day-title {
  margin: 0 0 0.75rem;
  font-size: 2rem;
  font-weight: 600;
  flex-shrink: 0;
  text-align: center;
  padding: 0.5rem 0;
}

/* 仅此区域可纵向滚动，标题在上方不参与滚动 */
.day-section-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.day-panel {
  flex: 0 0 auto;
  min-height: 0;
  display: flex;
  gap: 1rem;
}

.day-list {
  width: 300px;
  min-width: 160px;
  max-width: 80%;
  flex-shrink: 0;
  overflow-y: auto;
}

.day-resizer {
  width: 2px;
  height: 200px;
  align-self: flex-start;
  flex-shrink: 0;
  background: var(--border);
  cursor: col-resize;
  user-select: none;
}

.day-resizer:hover {
  background: var(--theme);
}

.day-detail {
  flex: 1;
  min-width: 0;
  padding-left: 1rem;
  padding-right: 1rem;
}

.item-list {
  list-style: none;
  margin: 0 8px;
  padding: 0;
}

.item-list li {
  margin-bottom: 0.25rem;
}

.item-list a {
  display: block;
  padding: 0.4rem 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-radius: 3px;
}

.item-list a:hover {
  color: var(--theme);
}

.item-list a.is-active {
  background: var(--border);
  color: var(--text);
  font-weight: 500;
  border-radius: 5px;
}

.empty-state {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.empty-state.hidden {
  display: none;
}

.detail-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
  padding: 0;
  text-align: left;
}

.detail-meta.hidden {
  display: none;
}

.detail-meta .detail-date,
.detail-meta .detail-views {
  margin: 0;
  padding: 0;
}

.detail-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.75rem;
  padding: 0 1rem 0 0;
  line-height: 1.4;
  word-break: break-word;
}

.detail-title.hidden {
  display: none;
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
}

.detail-tags.hidden {
  display: none;
}

/* 详情标签按数量分档背景：数量越多色越深 */
.detail-tags .tag {
  background: rgba(140, 62, 255, 0.1);
}

.detail-tags .tag.tag-range-1 {
  background: rgba(140, 62, 255, 0.08);
}

.detail-tags .tag.tag-range-2 {
  background: rgba(140, 62, 255, 0.16);
}

.detail-tags .tag.tag-range-3 {
  background: rgba(140, 62, 255, 0.26);
}

.detail-tags .tag.tag-range-4 {
  background: rgba(140, 62, 255, 0.38);
}

.detail-tags .tag:hover,
.detail-tags .tag.is-active {
  background: var(--theme-light);
}

[data-theme="dark"] .detail-tags .tag.tag-range-1 {
  background: rgba(140, 62, 255, 0.12);
}

[data-theme="dark"] .detail-tags .tag.tag-range-2 {
  background: rgba(140, 62, 255, 0.22);
}

[data-theme="dark"] .detail-tags .tag.tag-range-3 {
  background: rgba(140, 62, 255, 0.32);
}

[data-theme="dark"] .detail-tags .tag.tag-range-4 {
  background: rgba(140, 62, 255, 0.45);
}

[data-theme="dark"] .detail-tags .tag:hover,
[data-theme="dark"] .detail-tags .tag.is-active {
  background: var(--theme-light);
}

.detail-body {
  font-size: 0.95rem;
  line-height: 1.7;
}

.detail-body.hidden {
  display: none;
}

.detail-body h1,
.detail-body h2,
.detail-body h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.detail-body h1:first-child,
.detail-body h2:first-child,
.detail-body h3:first-child {
  margin-top: 0;
}

.detail-body p {
  margin: 1rem 0;
}

.detail-body img {
  max-width: 60%;
  height: auto;
  border-radius: 8px;
  margin: 1rem 0;
  cursor: pointer;
}

.detail-image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.85);
  cursor: pointer;
}

.detail-image-lightbox.hidden {
  display: none;
}

.detail-image-lightbox img {
  max-width: 95%;
  max-height: 95vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
  cursor: default;
  pointer-events: none;
}

.detail-body a {
  color: var(--theme);
  text-decoration: none;
}

.detail-body a:hover {
  text-decoration: underline;
}

.detail-body ul,
.detail-body ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.detail-body code {
  background: var(--code-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9rem;
}

.detail-body pre {
  background: var(--code-bg);
  padding: 1rem;
  margin: 1rem 0;
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid var(--border);
}

.detail-body .code-block-wrap {
  position: relative;
  margin: 1rem 0;
}

.detail-body .code-block-wrap pre {
  padding: 1rem 3rem 1rem 1rem;
  margin: 0;
}

.detail-body .code-block-wrap pre code {
  padding: 0;
  background: none;
}

.detail-body .code-copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--border);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}

.detail-body .code-copy-btn:hover {
  color: var(--text);
  background: var(--theme-light);
}

.detail-body .code-copy-btn.copied {
  color: var(--theme);
}