/* xty19 主题 — 深色现代风 */
:root {
  --bg: #0f1117;
  --bg-card: #171b26;
  --bg-elevated: #1e2433;
  --text: #e8eaef;
  --text-muted: #9aa3b5;
  --border: #2a3142;
  --accent: #6c9eff;
  --radius: 12px;
  --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --mono: "SF Mono", "Fira Code", monospace;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --header-h: 64px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--bg-elevated);
  padding: 0.15em 0.45em;
  border-radius: 6px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--text);
}

.site-brand:hover { text-decoration: none; opacity: 0.9; }

.brand-title {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  align-items: center;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  text-decoration: none;
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover {
  color: var(--text);
  background: var(--bg-elevated);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.site-main { min-height: calc(100vh - var(--header-h) - 120px); }

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.container.narrow { max-width: 720px; }

/* B 站视频轮播 */
.bili-carousel {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.25rem 0;
}

.bili-carousel-track {
  position: relative;
  height: clamp(160px, 28vw, 320px);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.bili-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
  text-decoration: none;
  color: var(--text);
}

.bili-slide.is-active {
  opacity: 1;
  z-index: 1;
}

.bili-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.bili-slide-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2rem 1rem 0.85rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.82));
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.bili-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: #fb7299;
  color: #fff;
  font-weight: 700;
}

.bili-dots {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 0.65rem;
}

.bili-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: var(--border);
  cursor: pointer;
}

.bili-dot.is-active {
  background: #fb7299;
  transform: scale(1.15);
}

/* Sections grid */
.sections-grid,
.recent-posts {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
}

.section-label {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

.section-card {
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  border-top: 3px solid var(--accent, var(--accent));
}

.section-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
  text-decoration: none;
}

.section-icon { font-size: 2rem; margin-bottom: 0.5rem; }

.section-name {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
}

.section-desc {
  margin: 0;
  flex: 1;
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.section-arrow {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--accent);
}

/* 首页作品墙 — 原位展示贴片 */
.home-works-block {
  grid-column: 1 / -1;
  padding: 1.25rem 1.35rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-top: 3px solid var(--accent, #9b5de5);
}

.home-works-head {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.home-works-head .section-icon {
  margin-bottom: 0;
  font-size: 2rem;
}

.home-works-title {
  margin: 0 0 0.25rem;
  font-size: 1.2rem;
}

.home-works-desc {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 首页作品墙：与探索分区卡片同高、文字完整显示 */
.home-works-block .works-mosaic--home-cards {
  display: grid;
  gap: 1rem;
  grid-template-rows: repeat(2, minmax(168px, auto));
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, calc((100% - (var(--works-cols, 3) - 1) * 1rem) / var(--works-cols, 3)));
  max-height: none;
  overflow: visible;
}

.home-works-block .works-mosaic--home-cards .works-tile {
  min-height: 100%;
  height: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.home-works-block .works-mosaic--home-cards .works-media {
  flex: 1 1 56%;
  min-height: 72px;
  max-height: 100px;
}

.home-works-block .works-mosaic--home-cards .works-media img {
  min-height: 72px;
  height: 100%;
  max-height: 100px;
}

.home-works-block .works-mosaic--home-cards .works-caption {
  flex: 0 0 auto;
  padding: 0.65rem 0.75rem 0.85rem;
}

.home-works-block .works-mosaic--home-cards .works-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  white-space: normal;
  word-break: break-word;
  overflow: visible;
  text-overflow: unset;
  display: block;
}

.home-works-block .works-mosaic--home-cards .works-desc {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.82rem;
  line-height: 1.45;
  white-space: normal;
  word-break: break-word;
  color: var(--text-muted);
}

/* 与 section-card 视觉高度对齐（约等于图标+标题+描述+箭头区域） */
.home-works-block .works-mosaic--home-cards .works-tile {
  min-height: 168px;
}

.works-mosaic--compact .works-tile {
  grid-column: span 3;
}

/* 作品墙：最多两行，多则缩小 */
.works-mosaic--two-rows {
  display: grid;
  grid-template-rows: repeat(2, minmax(0, 1fr));
  grid-template-columns: repeat(var(--works-cols, 3), minmax(0, 1fr));
  gap: 0.75rem;
  height: clamp(140px, 22vw, 200px);
  overflow: hidden;
}

.works-mosaic--two-rows .works-tile {
  grid-column: auto;
  grid-row: auto;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.works-mosaic--two-rows .works-media {
  min-height: 0;
  flex: 1;
}

.works-mosaic--two-rows .works-media img {
  min-height: 0;
  height: 100%;
}

.works-mosaic--two-rows .works-caption {
  padding: 0.4rem 0.5rem;
  flex-shrink: 0;
}

.works-mosaic--two-rows .works-title {
  font-size: clamp(0.65rem, 1.8vw, 0.85rem);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.works-mosaic--two-rows .works-desc {
  display: none;
}

.works-mosaic--two-rows[data-count="7"] .works-title,
.works-mosaic--two-rows[data-count="8"] .works-title,
.works-mosaic--two-rows[data-count="9"] .works-title,
.works-mosaic--two-rows[data-count="10"] .works-title {
  font-size: 0.7rem;
}

@media (max-width: 900px) {
  .works-mosaic--compact:not(.works-mosaic--two-rows) .works-tile,
  .works-mosaic--compact:not(.works-mosaic--two-rows) .works-tile.wide {
    grid-column: span 3;
  }
}

@media (max-width: 520px) {
  .works-mosaic--two-rows {
    height: 160px;
  }
  .works-mosaic--compact:not(.works-mosaic--two-rows) .works-tile {
    grid-column: span 1;
  }
}

/* Post cards */
.post-list { display: flex; flex-direction: column; gap: 1rem; }

.post-card {
  padding: 1.25rem 1.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.post-card-title { margin: 0 0 0.35rem; font-size: 1.15rem; }
.post-card-title a { color: var(--text); text-decoration: none; }
.post-card-title a:hover { color: var(--accent); }

.post-card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.post-card-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.post-card-excerpt {
  margin: 0.75rem 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.post-card-excerpt p { margin: 0; }

.post-card-more {
  font-size: 0.85rem;
  font-weight: 500;
}

.chip {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  margin-right: 0.35rem;
  text-decoration: none;
}

.chip-cat {
  background: rgba(108, 158, 255, 0.15);
  color: #a8c7ff;
}

.chip-tag {
  background: rgba(155, 93, 229, 0.15);
  color: #c9a0ff;
}

/* Article */
.article-full { padding-bottom: 2rem; }

.article-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.3;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
}

.article-body {
  font-size: 1rem;
}

.article-body h2,
.article-body h3 {
  margin-top: 1.75rem;
  color: var(--text);
}

.article-body img {
  max-width: 100%;
  border-radius: var(--radius);
}

.article-body blockquote {
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--accent);
  background: var(--bg-card);
  color: var(--text-muted);
}

/* Page header */
.page-header { margin-bottom: 2rem; }

.section-header {
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border-left: 4px solid var(--accent, var(--accent));
}

.section-page-icon { font-size: 2.5rem; display: block; margin-bottom: 0.5rem; }

.page-title { margin: 0 0 0.5rem; font-size: 1.75rem; }
.page-desc { margin: 0; color: var(--text-muted); }

.section-intro {
  margin-bottom: 2rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.empty-hint {
  color: var(--text-muted);
  padding: 2rem;
  text-align: center;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

/* 作品墙 — 外链贴片 */
.works-mosaic {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(120px, auto);
  gap: 1rem;
}

.works-tile {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.works-tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(108, 158, 255, 0.45);
}

.works-tile.wide { grid-column: span 6; }
.works-tile.tall .works-media { min-height: 200px; }

.works-media {
  display: block;
  flex: 1;
  min-height: 140px;
  background: var(--bg-elevated);
  overflow: hidden;
  text-decoration: none;
}

.works-media img {
  width: 100%;
  height: 100%;
  min-height: 140px;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}

.works-tile:hover .works-media img { transform: scale(1.04); }

.works-media-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-muted);
  opacity: 0.45;
}

.works-caption {
  padding: 0.85rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.works-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.works-title:hover { color: var(--accent); }

.works-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  line-height: 1.45;
}

.works-desc:hover { color: var(--accent); }

@media (max-width: 900px) {
  .works-mosaic { grid-template-columns: repeat(6, 1fr); }
  .works-tile, .works-tile.wide { grid-column: span 3; }
}

@media (max-width: 520px) {
  .works-mosaic { grid-template-columns: 1fr; }
  .works-tile, .works-tile.wide { grid-column: span 1; }
}

/* Archive */
.archive-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.archive-item time {
  font-size: 0.85rem;
  color: var(--text-muted);
  min-width: 6.5rem;
}

.archive-item a { color: var(--text); font-weight: 500; }
.archive-cat { font-size: 0.75rem; color: var(--text-muted); }

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 1rem;
}

.page-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
}

.page-btn:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.page-info { color: var(--text-muted); font-size: 0.9rem; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.25rem;
  margin-top: 2rem;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-copy { margin: 0 0 0.5rem; }
.footer-meta { margin: 0; }

/* Mobile */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem 1.25rem;
  }

  .site-nav.is-open { display: flex; }

  .header-inner { position: relative; flex-wrap: wrap; }

  .brand-sub { display: none; }

  .grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .grid { grid-template-columns: 1fr; }
}