:root {
  color-scheme: light;
  --page-bg: #ffffff;
  --sidebar-bg: #f7f8fa;
  --surface-bg: #ffffff;
  --text: #20242a;
  --muted: #626b75;
  --subtle: #858e98;
  --border: #e2e6ea;
  --soft-border: #edf0f3;
  --accent: var(--accent-color, #526d8a);
  --accent-contrast: #ffffff;
  --hover-bg: color-mix(in srgb, var(--accent) 8%, transparent);
  --active-bg: color-mix(in srgb, var(--accent) 12%, transparent);
  --code-bg: #f3f5f7;
  --shadow: 0 12px 36px rgb(15 23 42 / 16%);
  --sidebar-width: 292px;
  --content-width: 780px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --page-bg: #171a1f;
  --sidebar-bg: #1d2229;
  --surface-bg: #20262e;
  --text: #e8ebef;
  --muted: #b0bac5;
  --subtle: #8995a2;
  --border: #39414b;
  --soft-border: #2d353e;
  --accent-contrast: #ffffff;
  --hover-bg: color-mix(in srgb, var(--accent) 17%, transparent);
  --active-bg: color-mix(in srgb, var(--accent) 24%, transparent);
  --code-bg: #222a33;
  --shadow: 0 12px 36px rgb(0 0 0 / 38%);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--page-bg);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--page-bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
}

button,
a {
  font: inherit;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

button {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  transform: translateY(-180%);
  border-radius: 0.4rem;
  background: var(--accent);
  color: var(--accent-contrast);
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-layout {
  min-height: 100vh;
}

.site-sidebar {
  position: fixed;
  z-index: 30;
  inset: 0 auto 0 0;
  width: var(--sidebar-width);
  overflow: hidden;
  border-right: 1px solid var(--border);
  background: var(--sidebar-bg);
}

.sidebar-inner {
  display: flex;
  height: 100%;
  min-height: 0;
  flex-direction: column;
  padding: 1.65rem 1.2rem 1.1rem;
}

.sidebar-mobile-controls {
  display: none;
}

.profile-panel {
  flex: 0 0 auto;
  padding: 0 0 1rem;
  text-align: left;
}

.profile-photo {
  display: block;
  width: 112px;
  height: 112px;
  margin: 0 0 1rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface-bg);
  object-fit: cover;
}

.profile-identity {
  display: grid;
  gap: 0.16rem;
}

.profile-name {
  color: var(--text);
  font-size: 1.22rem;
  font-weight: 680;
  line-height: 1.3;
}

.profile-position,
.profile-institution,
.profile-department {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.profile-contact {
  display: grid;
  justify-items: start;
  gap: 0.28rem;
  margin-top: 0.8rem;
  font-size: 0.88rem;
}

.profile-email,
.profile-cv {
  overflow-wrap: anywhere;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  margin-top: 0.9rem;
}

.social-link {
  display: inline-flex;
  width: 25px;
  height: 25px;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  opacity: 0.82;
}

.social-link:hover {
  opacity: 1;
}

.social-link img {
  display: block;
  width: 22px;
  height: 22px;
  object-fit: contain;
}

html[data-theme="dark"] .social-link img {
  filter: invert(0.88);
}

.sidebar-tools {
  flex: 0 0 auto;
  padding: 0.7rem 0 0.8rem;
  border-top: 1px solid var(--soft-border);
}

.theme-toggle {
  display: inline-flex;
  min-height: 2rem;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.8rem;
}

.theme-toggle:hover {
  border-color: var(--accent);
  background: var(--hover-bg);
  color: var(--text);
}

.sidebar-nav {
  min-height: 0;
  flex: 1 1 auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.35rem 0.15rem 0.75rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.nav-tree,
.nav-children,
.top-navigation ul,
.breadcrumbs ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-item {
  margin: 0;
}

.nav-row {
  display: flex;
  min-height: 2.15rem;
  align-items: center;
  gap: 0.15rem;
}

.nav-link {
  display: block;
  min-width: 0;
  flex: 1 1 auto;
  padding: 0.32rem 0.48rem;
  border-radius: 0.35rem;
  color: var(--muted);
  font-size: 0.91rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
  text-decoration: none;
}

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

.nav-link.ancestor {
  background: color-mix(in srgb, var(--accent) 5%, transparent);
  color: var(--text);
}

.nav-link.active {
  background: var(--active-bg);
  color: var(--accent);
  font-weight: 700;
}

.nav-toggle {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  flex: 0 0 2rem;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 0.35rem;
  background: transparent;
  color: var(--subtle);
  cursor: pointer;
}

.nav-toggle:hover:not(:disabled) {
  background: var(--hover-bg);
  color: var(--text);
}

.nav-toggle span {
  display: block;
  transform: rotate(0deg);
  transition: transform 140ms ease;
  font-size: 1.2rem;
  line-height: 1;
}

.nav-toggle[aria-expanded="true"] span {
  transform: rotate(180deg);
}

.nav-toggle:disabled {
  cursor: default;
  opacity: 0.58;
}

.nav-children {
  margin-left: 0.8rem;
  padding-left: 0.55rem;
  border-left: 1px solid var(--border);
}

.nav-children[hidden] {
  display: none;
}

.main-column {
  display: flex;
  min-width: 0;
  height: 100vh;
  min-height: 100vh;
  flex-direction: column;
  margin-left: var(--sidebar-width);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--page-bg);
}

.top-navigation {
  flex: 0 0 auto;
  padding: 0.9rem clamp(1.5rem, 5vw, 4.5rem);
  border-bottom: 1px solid var(--border);
  background: var(--page-bg);
}

.top-navigation ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.35rem;
}

.top-nav-link {
  display: inline-block;
  padding: 0.12rem 0;
  color: var(--muted);
  font-size: 0.91rem;
  text-decoration: none;
}

.top-nav-link:hover,
.top-nav-link.active {
  color: var(--accent);
}

.top-nav-link.active {
  font-weight: 700;
}

.main-content {
  width: 100%;
  flex: 1 0 auto;
  padding: 2.15rem clamp(1.5rem, 5vw, 4.5rem) 3.5rem;
}

.content-narrow {
  width: 100%;
  max-width: var(--content-width);
  margin-right: auto;
  margin-left: auto;
}

.page-heading {
  margin-bottom: 0;
}

.content-body {
  width: 100%;
}

.content-body > :not(.content-wide) {
  width: 100%;
  max-width: var(--content-width);
  margin-right: auto;
  margin-left: auto;
}

.content-body > .content-wide {
  width: 100%;
  max-width: none;
  margin-right: 0;
  margin-left: 0;
}

.content-wide {
  width: 100%;
  max-width: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text);
  font-weight: 660;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

h1 {
  margin: 0 0 1.55rem;
  font-size: clamp(1.9rem, 3.4vw, 2.55rem);
  letter-spacing: -0.035em;
}

h2 {
  margin: 2.3rem 0 0.9rem;
  font-size: 1.42rem;
  letter-spacing: -0.02em;
}

h3 {
  margin: 1.8rem 0 0.65rem;
  font-size: 1.14rem;
}

p {
  margin: 0 0 1rem;
}

.breadcrumbs {
  margin: 0 0 1.25rem;
  color: var(--subtle);
  font-size: 0.82rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.breadcrumbs li + li::before {
  margin-right: 0.4rem;
  color: var(--subtle);
  content: "/";
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.metadata-list,
.child-folder-list {
  padding-left: 1.35rem;
}

.metadata-list > li,
.child-folder-list > li {
  margin: 0.45rem 0;
  padding-left: 0.15rem;
}

.metadata-list > li > strong {
  color: var(--text);
}

.plain-value {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.child-folders {
  margin-top: 1.9rem;
}

.child-folders h2 {
  margin-top: 0;
}

.site-footer {
  flex: 0 0 auto;
  padding: 1.25rem clamp(1.5rem, 5vw, 4.5rem) 1.7rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
}

.site-footer p:last-child {
  margin-bottom: 0;
}

.site-footer .content-narrow > *:last-child {
  margin-bottom: 0;
}

pre,
.codehilite {
  max-width: 100%;
  overflow-x: auto;
  border-radius: 0.45rem;
}

pre {
  padding: 1rem;
  background: var(--code-bg);
  font-size: 0.88rem;
  line-height: 1.55;
}

.codehilite pre {
  margin: 0;
  padding: 1rem;
}

code {
  padding: 0.12em 0.28em;
  border-radius: 0.25rem;
  background: var(--code-bg);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

pre code {
  padding: 0;
  background: transparent;
}

table {
  width: 100%;
  margin: 1.4rem 0;
  border-collapse: collapse;
  font-size: 0.94rem;
}

th,
td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--text);
  font-weight: 650;
}

blockquote {
  margin: 1.2rem 0;
  padding: 0.2rem 1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

img,
video,
iframe {
  max-width: 100%;
}

.mobile-header,
.sidebar-backdrop {
  display: none;
}

@media (max-width: 850px) {
  .site-sidebar {
    z-index: 80;
    width: min(88vw, 350px);
    box-shadow: var(--shadow);
    transform: translateX(-105%);
    transition: transform 180ms ease;
  }

  .site-sidebar.is-open {
    transform: translateX(0);
  }

  .sidebar-inner {
    padding-top: 0.85rem;
  }

  .sidebar-mobile-controls {
    display: flex;
    min-height: 2.4rem;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.65rem;
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 650;
  }

  .sidebar-close {
    width: 2.1rem;
    height: 2.1rem;
    border: 1px solid var(--border);
    border-radius: 0.4rem;
    background: transparent;
    cursor: pointer;
    font-size: 1.35rem;
    line-height: 1;
  }

  .profile-photo {
    width: 84px;
    height: 84px;
  }

  .sidebar-backdrop.is-visible {
    position: fixed;
    z-index: 70;
    inset: 0;
    display: block;
    border: 0;
    background: rgb(0 0 0 / 44%);
  }

  .main-column {
    height: auto;
    min-height: 100vh;
    margin-left: 0;
    overflow: visible;
  }

  .mobile-header {
    position: relative;
    z-index: 5;
    display: flex;
    min-height: 4.2rem;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    padding: 0.65rem 1.1rem;
    border-bottom: 1px solid var(--border);
    background: var(--sidebar-bg);
  }

  .mobile-identity {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 0.65rem;
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 680;
    line-height: 1.2;
  }

  .mobile-identity span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-profile-photo {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    border: 1px solid var(--border);
    border-radius: 50%;
    object-fit: cover;
  }

  .mobile-header-actions {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.5rem;
  }

  .theme-toggle-mobile {
    min-height: 2rem;
    padding: 0.2rem 0.45rem;
    font-size: 0.75rem;
  }

  .theme-toggle-desktop,
  .top-navigation {
    display: none;
  }

  .mobile-menu-button {
    display: flex;
    width: 2.25rem;
    height: 2.25rem;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border: 1px solid var(--border);
    border-radius: 0.4rem;
    background: transparent;
    cursor: pointer;
  }

  .mobile-menu-button span {
    display: block;
    width: 17px;
    height: 2px;
    border-radius: 2px;
    background: var(--text);
  }

  .main-content {
    padding: 1.65rem 1.2rem 2.6rem;
  }

  .site-footer {
    padding: 1rem 1.2rem 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

.google-calendar {
    margin-block: 2rem;
}

.google-calendar iframe {
    display: block;
    width: 100%;
    min-height: 600px;
    border: 0;
}

li {
  margin: 10px 0;
}