/* ================================================================
   Components - Reusable UI Components
   ================================================================ */

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-4);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--color-text);
  flex-shrink: 0;
}

.logo-img {
  height: 32px;
  width: auto;
}

.logo-text {
  letter-spacing: -0.01em;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: color 0.15s ease, background-color 0.15s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-alt);
}

.nav-link.active {
  color: var(--color-accent);
  background-color: var(--color-accent-bg);
  font-weight: 500;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: color 0.15s ease, background-color 0.15s ease;
}

.btn-icon:hover {
  color: var(--color-text);
  background-color: var(--color-bg-alt);
}

/* Theme Toggle Icons */
[data-theme="light"] .icon-moon,
[data-theme="dark"] .icon-sun {
  display: none;
}

[data-theme="light"] .icon-sun,
[data-theme="dark"] .icon-moon {
  display: block;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
}

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

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6);
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    gap: var(--space-1);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
    z-index: 99;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    border-radius: var(--radius-md);
  }

  .nav-link:hover {
    background-color: var(--color-bg-alt);
  }
}

/* --- Header Scroll State --- */
.site-header.is-scrolled {
  box-shadow: 0 1px 4px var(--color-shadow);
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

/* --- Author Page --- */
.section-author {
  padding: var(--space-12) 0 var(--space-20);
}

.author-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.author-avatar-lg {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-full);
  object-fit: cover;
  margin: 0 auto var(--space-4);
  border: 3px solid var(--color-bg-elevated);
  box-shadow: 0 0 0 2px var(--color-border);
}

/* --- Post Author Meta --- */
.post-author-meta {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.post-author {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  transition: color 0.15s ease;
}

.post-author:hover {
  color: var(--color-accent);
}

.post-author-avatar {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

/* --- Error Page --- */
.section-error {
  padding: var(--space-20) 0;
}

.error-card {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.error-code {
  font-size: 5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  letter-spacing: -0.05em;
}

.error-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.error-detail {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background-color: var(--color-bg-alt);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  word-break: break-word;
}

.error-desc {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

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

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) 0 var(--space-8);
  background-color: var(--color-bg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
}

.footer-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  display: block;
  margin-bottom: var(--space-2);
}

.footer-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 320px;
  margin-bottom: 0;
}

.footer-social {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color 0.15s ease, background-color 0.15s ease;
}

.social-link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-alt);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer-row-primary {
  justify-content: space-between;
}

.footer-row-beian {
  justify-content: flex-end;
  gap: var(--space-2);
  margin-top: calc(var(--space-1) * -1);
  font-size: var(--text-xs);
}

.footer-bottom a {
  color: var(--color-text-secondary);
  transition: color 0.15s ease;
}

.footer-bottom a:hover {
  color: var(--color-accent);
}

.footer-bottom strong {
  font-weight: 600;
  color: var(--color-text-secondary);
}

.beian {
  display: inline-flex;
  align-items: center;
}

.beian a {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: nowrap;
  gap: 4px;
  min-height: 24px;
  padding: 2px var(--space-2);
  color: var(--color-text-muted);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  line-height: 1.4;
  white-space: nowrap;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.beian a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: var(--color-accent-bg);
}

.mps-beian {
  display: inline-flex;
  align-items: center;
}

.mps-icon {
  width: 14px !important;
  height: 14px !important;
  max-width: 14px !important;
  max-height: 14px !important;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  object-fit: contain;
}

.mps-beian a > span {
  display: inline-block;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .footer-top {
    flex-direction: column;
    gap: var(--space-4);
  }

  .footer-row-primary {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .footer-row-beian {
    justify-content: flex-start;
    gap: var(--space-2);
  }

  .beian a {
    white-space: normal;
  }

  .mps-beian a,
  .mps-beian a > span {
    white-space: nowrap;
    flex-wrap: nowrap;
  }
}

/* --- Footer Friend Links --- */
.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.footer-links-label {
  color: var(--color-text-muted);
  font-weight: 500;
  margin-right: var(--space-1);
}

.footer-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-link-sep {
  color: var(--color-text-muted);
  margin: 0 2px;
}
/* Hide the trailing separator after the last link */
.footer-link-sep:last-child {
  display: none;
}

/* --- Post Card --- */
.post-card {
  position: relative;
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
}

.post-card:last-child {
  border-bottom: none;
}

.post-list[data-layout="list"] .post-card {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 24px var(--color-shadow);
}

.post-list[data-layout="list"] .post-card-tags {
  padding: 0 var(--space-5) var(--space-5);
}

.post-card-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
  padding: var(--space-1) 0;
  border-radius: var(--radius-xl);
  transition: opacity 0.15s ease, transform 0.18s ease;
}

.post-card-link:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.post-card-cover {
  position: relative;
  margin-bottom: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg-alt);
  box-shadow: 0 8px 22px var(--color-shadow);
}

.post-card-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.post-card-link:hover .post-card-cover img {
  transform: scale(1.03);
}

.post-card-body {
  min-width: 0;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  flex-wrap: wrap;
}

.post-card-category {
  display: inline-flex;
  align-items: center;
  padding: 1px var(--space-2);
  color: var(--color-accent);
  background-color: var(--color-accent-bg);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
}

@media (min-width: 860px) {
  .post-list[data-layout="list"] .post-card {
    padding: var(--space-5);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 24px var(--color-shadow);
    transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  }

  .post-list[data-layout="list"] .post-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 14px 34px var(--color-shadow-lg);
    transform: translateY(-2px);
  }

  .post-list[data-layout="list"] .post-card-link--with-cover {
    grid-template-columns: minmax(220px, var(--post-cover-width)) minmax(0, 1fr);
    align-items: center;
  }

  .post-list[data-layout="list"] .post-card-cover img {
    aspect-ratio: 4 / 3;
  }

  .post-list[data-layout="list"] .post-card-title {
    font-size: var(--text-2xl);
  }
}

.post-card-title {
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
  transition: color 0.15s ease;
}

.post-card-link:hover .post-card-title {
  color: var(--color-accent);
}

.post-card-excerpt {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* --- Profile Card --- */
.profile-card {
  text-align: center;
  padding: var(--space-8);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.profile-avatar {
  margin-bottom: var(--space-4);
}

.profile-avatar img {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  object-fit: cover;
  margin: 0 auto;
}

.profile-name {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.profile-bio {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-4);
}

.profile-links {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
}

.profile-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color 0.15s ease, background-color 0.15s ease;
}

.profile-link:hover {
  color: var(--color-accent);
  background-color: var(--color-accent-bg);
}

/* --- Category Card --- */
.category-card {
  display: block;
  padding: var(--space-4);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.category-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px var(--color-shadow);
}

.category-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}

.category-name {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0;
}

.category-count {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-accent);
  flex-shrink: 0;
}

.category-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 0;
}

/* --- Category Tree (recursive) --- */
.category-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.category-list--children {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  margin-top: var(--space-3);
  padding-left: var(--space-3);
  border-left: 2px solid var(--color-border);
}

.category-item {
  display: block;
}

/* --- Tag Chips --- */
.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-tag-text);
  background-color: var(--color-tag-bg);
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background-color 0.15s ease;
}

a.tag-chip:hover {
  color: var(--color-accent);
  background-color: var(--color-accent-bg);
}

/* --- Category Chip --- */
.category-chip {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  background-color: var(--color-accent-bg);
  border-radius: var(--radius-sm);
  transition: opacity 0.15s ease;
}

a.category-chip:hover {
  opacity: 0.8;
}

/* --- Tag Cloud --- */
.tag-cloud-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: all 0.15s ease;
}

.tag-cloud-item:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-accent-bg);
}

.tag-cloud-item.tag-md {
  font-size: var(--text-base);
  padding: var(--space-2) var(--space-5);
}

.tag-cloud-item.tag-lg {
  font-size: var(--text-lg);
  padding: var(--space-3) var(--space-6);
  font-weight: 500;
}

.tag-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.tag-badge-lg {
  color: var(--color-accent);
  font-weight: 400;
}

/* --- Reading Time --- */
.reading-time {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
/* Hide the JS-computed reading-time placeholder until main.js fills it in,
   so users without JS (or before the script runs) never see a wrong fixed "1". */
.reading-time--js[aria-hidden="true"] {
  display: none;
}

/* --- Copy Code Button --- */
.code-lang-label {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: 2px var(--space-2);
  color: var(--color-text-muted);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.4;
  opacity: 0.86;
}

.copy-code-btn {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: 2px var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

pre:hover .copy-code-btn {
  opacity: 1;
}

/* Always show on touch devices (no hover capability) */
@media (hover: none) {
  .copy-code-btn {
    opacity: 1;
  }
}

.copy-code-btn:hover {
  color: var(--color-text);
  border-color: var(--color-border-hover);
}

.copy-code-btn.is-copied {
  color: var(--color-success);
  border-color: var(--color-success);
}

/* --- Archive Year Header --- */
.archive-year {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  padding: var(--space-6) 0 var(--space-3);
  letter-spacing: -0.01em;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  color: white;
  background-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
}

.btn-outline {
  color: var(--color-text-secondary);
  background-color: transparent;
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  color: var(--color-text);
  border-color: var(--color-border-hover);
  background-color: var(--color-bg-alt);
}


/* --- Link / Friend Card --- */
.links-group {
  margin-bottom: var(--space-10);
}

.links-group-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
}

.link-grid--featured {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}

.link-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.link-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--color-shadow);
}

.link-card--featured {
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-6);
}

.link-card-logo {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-alt);
  color: var(--color-accent);
  font-weight: 600;
}

.link-card--featured .link-card-logo {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-3);
}

.link-card-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.link-card-initial {
  font-size: var(--text-lg);
  line-height: 1;
}

.link-card--featured .link-card-initial {
  font-size: var(--text-2xl);
}

.link-card-body {
  flex: 1;
  min-width: 0;
}

.link-card-name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-card--featured .link-card-name {
  font-size: var(--text-lg);
  white-space: normal;
}

.link-card-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.link-card--featured .link-card-desc {
  font-size: var(--text-sm);
  -webkit-line-clamp: 3;
}


/* --- Sidebar --- */
.site-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: sticky;
  top: calc(var(--header-height, 64px) + var(--space-4));
  align-self: start;
  max-height: calc(100vh - var(--header-height, 64px) - var(--space-6));
  overflow-y: auto;
  padding-right: 2px;
  scrollbar-width: thin;
}

.sidebar-widget {
  padding: var(--space-5);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 6px 18px var(--color-shadow);
}

.widget-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.widget-title::after {
  content: '';
  width: 28px;
  height: 2px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent);
  opacity: 0.65;
}

.widget-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.widget-list-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: color 0.15s ease;
}

.widget-list-link:hover {
  color: var(--color-accent);
}

.widget-list-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background-color: var(--color-bg-alt);
  padding: 1px 8px;
  border-radius: 999px;
  min-width: 24px;
  text-align: center;
}

/* Recent posts widget */
.recent-posts {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.recent-post-item {
  font-size: var(--text-sm);
}

.recent-post-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-secondary);
  transition: color 0.15s ease;
}

.recent-post-link:hover {
  color: var(--color-accent);
}

.recent-post-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.recent-post-date {
  flex-shrink: 0;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

/* Tag cloud widget */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Blog info widget — re-uses .profile-card but smaller */
.widget-blog-info .profile-card {
  text-align: left;
}

/* Page layout using optional side columns */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 1024px) {
  .layout-with-sidebar {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: var(--space-6);
  }
}

.post-page-with-sidebar {
  max-width: var(--container-full);
  margin: 0 auto;
}

@media (min-width: 1440px) {
  .post-page-with-sidebar {
    grid-template-columns: 240px minmax(0, 1fr) 300px;
    gap: var(--space-6);
  }

  .post-page-with-sidebar.no-toc {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .post-page-with-sidebar .post-toc--left {
    display: block;
  }
}

@media (min-width: 1600px) {
  .post-page-with-sidebar {
    grid-template-columns: 260px minmax(0, 1fr) 320px;
    gap: var(--space-8);
  }

  .post-page-with-sidebar.no-toc {
    grid-template-columns: minmax(0, 1fr) 320px;
  }
}

.post-page-with-sidebar .post-main-content {
  min-width: 0;
}

.sidebar-drawer-toggle {
  position: fixed;
  right: var(--space-5);
  bottom: calc(var(--space-5) + env(safe-area-inset-bottom, 0px));
  z-index: 120;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  color: #fff;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  box-shadow: 0 12px 28px var(--color-shadow-lg);
  transition: transform 0.18s ease, background-color 0.18s ease;
}

.sidebar-drawer-toggle:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
}

.sidebar-drawer-toggle::before {
  content: '☰';
  font-size: var(--text-sm);
  line-height: 1;
}

.sidebar-drawer {
  position: fixed;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  z-index: 119;
  width: min(380px, calc(100vw - var(--space-6)));
  padding: var(--space-5);
  background-color: color-mix(in srgb, var(--color-bg) 94%, transparent);
  border-left: 1px solid var(--color-border);
  box-shadow: -18px 0 40px var(--color-shadow-lg);
  transform: translateX(105%);
  opacity: 0;
  pointer-events: none;
  overflow-y: auto;
  transition: transform 0.22s ease, opacity 0.22s ease;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.sidebar-drawer.is-open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.site-sidebar--drawer {
  position: static;
  max-height: none;
  overflow: visible;
  padding-right: 0;
}

body.sidebar-drawer-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .sidebar-drawer-toggle {
    right: var(--space-4);
    bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
  }

  .sidebar-drawer {
    width: min(340px, calc(100vw - var(--space-4)));
    padding: var(--space-4);
  }
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: var(--space-10) var(--space-4);
  color: var(--color-text-muted);
}

.empty-icon {
  display: inline-flex;
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
  opacity: 0.6;
}

.empty-message {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-2) 0;
}

.empty-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

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