/* ====== Header base ====== */
.site-header{
  position: sticky; top: 0; z-index: 1000;
  display: flex; align-items: center; gap: 16px;
  padding: 12px 24px;
  background: #f3f3f3;
  border-bottom: 1px solid #e6e6e6;
  box-shadow: 0 2px 6px rgba(0,0,0,.08);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.site-brand{ font-size: 22px; font-weight: 600; color: #222; white-space: nowrap; }

.site-nav{
  margin-left: auto; display: flex; align-items: center; gap: 22px;
}
.site-nav a{
  text-decoration: none; color: #333; font-weight: 500;
}
.site-nav a:hover{ color:#0a66c2; }

/* Buttons (icons) */
.icon-btn{
  background: transparent; border: 0; cursor: pointer; padding: 4px;
  color:#333; line-height: 0; display: inline-flex; align-items: center; justify-content: center;
}
.icon-btn:hover{ color:#0a66c2; }

/* Make your PNG icon readable in dark mode */
#theme-icon{ transition: filter .25s ease; }
body.dark-mode #theme-icon{ filter: invert(1); }

/* Mobile (hamburger without JS) */
.nav-toggle{ display:none; }
.nav-burger{
  margin-left: auto; display:none; cursor:pointer; font-size: 20px; user-select:none;
  padding: 4px 8px; border-radius: 6px;
}
@media (max-width: 720px){
  .nav-burger{ display:block; }
  .site-nav{
    position: absolute; right: 12px; top: 56px;
    display: none; flex-direction: column; gap: 12px;
    background: #f3f3f3; padding: 12px; border: 1px solid #e6e6e6;
    border-radius: 10px; box-shadow: 0 10px 24px rgba(0,0,0,.12);
  }
  .nav-toggle:checked + .nav-burger + .site-nav{ display:flex; }
}

/* ====== Theme (light / dark) ====== */
/* Light (default) */
:root{
  --bg: #ffffff;
  --fg: #222;
  --header-bg: #f3f3f3;
  --header-border: #e6e6e6;
  --link: #333;
  --link-hover: #0a66c2;
}

body{ background: var(--bg); color: var(--fg); }

/* Keep existing colors working: override header if using variables */
.site-header{ background: var(--header-bg); border-bottom-color: var(--header-border); }
.site-nav a{ color: var(--link); }
.site-nav a:hover{ color: var(--link-hover); }

/* Dark */
body.dark-mode{
  --bg: #111213;
  --fg: #f4f4f4;
  --header-bg: #1b1c1d;
  --header-border: #2a2b2c;
  --link: #f0f0f0;
  --link-hover: #8bc4ff;
}

/* Optional: make SVG icons inherit color nicely */
.icon-btn svg{ fill: currentColor; }
/* === THEME VARIABLE FIXES (put at END of stylesheet.css) === */

/* Light defaults */
:root{
  --bg: #ffffff;
  --fg: #222;
  --header-bg: #f3f3f3;
  --header-fg: #222;        /* <-- header text/icons color */
  --header-border: #e6e6e6;
  --link: #333;
  --link-hover: #0a66c2;
}

/* Dark mode values */
body.dark-mode{
  --bg: #111213;
  --fg: #f4f4f4;
  --header-bg: #1b1c1d;
  --header-fg: #f4f4f4;     /* <-- light text/icons on dark header */
  --header-border: #2a2b2c;
  --link: #f0f0f0;
  --link-hover: #8bc4ff;
}

/* Make the whole header use header foreground color */
.site-header{
  background: var(--header-bg) !important;
  border-bottom-color: var(--header-border) !important;
  color: var(--header-fg) !important;   /* children inherit this */
}

/* Ensure brand, links, and icons follow the theme instead of fixed colors */
.site-brand{ color: inherit !important; }
.site-header .icon-btn{ color: inherit !important; }      /* overrides any .icon-btn { color:#333 } */
.site-nav a{
  color: var(--link) !important;
  text-decoration: none;
}
.site-nav a:hover{ color: var(--link-hover) !important; }

/* SVGs take current text color; your search SVG already does fill:currentColor */
.icon-btn svg{ fill: currentColor; }

/* Your PNG theme icon: invert in dark for visibility (keep if you use a single PNG) */
#theme-icon{ transition: filter .25s ease; }
body.dark-mode #theme-icon{ filter: invert(1); }






/* latin-ext */
@font-face {
  font-family: 'Lato';
  font-style: italic;
  font-weight: 400;
  src: local('Lato Italic'), local('Lato-Italic'), url(https://fonts.gstatic.com/s/lato/v15/S6u8w4BMUTPHjxsAUi-qNiXg7eU0.woff2) format('woff2');
  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Lato';
  font-style: italic;
  font-weight: 400;
  src: local('Lato Italic'), local('Lato-Italic'), url(https://fonts.gstatic.com/s/lato/v15/S6u8w4BMUTPHjxsAXC-qNiXg7Q.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* latin-ext */
@font-face {
  font-family: 'Lato';
  font-style: italic;
  font-weight: 700;
  src: local('Lato Bold Italic'), local('Lato-BoldItalic'), url(https://fonts.gstatic.com/s/lato/v15/S6u_w4BMUTPHjxsI5wq_FQftx9897sxZ.woff2) format('woff2');
  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Lato';
  font-style: italic;
  font-weight: 700;
  src: local('Lato Bold Italic'), local('Lato-BoldItalic'), url(https://fonts.gstatic.com/s/lato/v15/S6u_w4BMUTPHjxsI5wq_Gwftx9897g.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* latin-ext */
@font-face {
  font-family: 'Lato';
  font-style: normal;
  font-weight: 400;
  src: local('Lato Regular'), local('Lato-Regular'), url(https://fonts.gstatic.com/s/lato/v15/S6uyw4BMUTPHjxAwXiWtFCfQ7A.woff2) format('woff2');
  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Lato';
  font-style: normal;
  font-weight: 400;
  src: local('Lato Regular'), local('Lato-Regular'), url(https://fonts.gstatic.com/s/lato/v15/S6uyw4BMUTPHjx4wXiWtFCc.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* latin-ext */
@font-face {
  font-family: 'Lato';
  font-style: normal;
  font-weight: 700;
  src: local('Lato Bold'), local('Lato-Bold'), url(https://fonts.gstatic.com/s/lato/v15/S6u9w4BMUTPHh6UVSwaPGQ3q5d0N7w.woff2) format('woff2');
  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Lato';
  font-style: normal;
  font-weight: 700;
  src: local('Lato Bold'), local('Lato-Bold'), url(https://fonts.gstatic.com/s/lato/v15/S6u9w4BMUTPHh6UVSwiPGQ3q5d0.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

a {
  color: #1772d0;
  text-decoration: none;
}

a:focus,
a:hover {
  color: #f09228;
  text-decoration: none;
}

body,
td,
th,
tr,
p,
a {
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 14px;
}

strong {
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 14px;
}

h2 {
  margin: 0;
  font-weight: normal;
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 22px;
}

.papertitle {
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 14px;
  font-weight: 700;
}

.name {
  padding-top: 20px;
  margin: 0;
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 32px;
}

.one {
  width: 160px;
  height: 160px;
  position: relative;
}

.two {
  width: 160px;
  height: 160px;
  position: absolute;
  transition: opacity .2s ease-in-out;
  -moz-transition: opacity .2s ease-in-out;
  -webkit-transition: opacity .2s ease-in-out;
}

.fade {
  transition: opacity .2s ease-in-out;
  -moz-transition: opacity .2s ease-in-out;
  -webkit-transition: opacity .2s ease-in-out;
}

span.highlight {
  background-color: #ffffd0;
}

.colored-box {
    color: black;
    padding: 20px;
    display: inline-block;
    border-radius: 10px;
}
/* smooth scroll */
html { scroll-behavior: smooth; }

/* prevent sticky header from covering the target */
:root { --header-h: 64px; }           /* adjust to your header height */
[id] { scroll-margin-top: var(--header-h); }
/* ---------- Theme variables for scrollbars ---------- */
:root{
  --scroll-thumb: #bdbdbd;      /* light mode thumb */
  --scroll-track: transparent;  /* light mode track */
}
body.dark-mode{
  --scroll-thumb: #5a5a5a;      /* dark mode thumb */
  --scroll-track: transparent;  /* dark mode track */
}

/* ---------- Global scrollbar (WebKit browsers) ---------- */
*::-webkit-scrollbar{
  width: 8px;      /* thinner bar */
  height: 8px;
}
*::-webkit-scrollbar-thumb{
  background-color: var(--scroll-thumb);
  border-radius: 8px;
  border: 2px solid var(--scroll-track);   /* creates a slimmer look */
}
*::-webkit-scrollbar-thumb:hover{
  background-color: color-mix(in srgb, var(--scroll-thumb) 85%, black);
}
*::-webkit-scrollbar-track{
  background: var(--scroll-track);
}

/* ---------- Firefox ---------- */
*{
  scrollbar-width: thin;                         /* thin */
  scrollbar-color: var(--scroll-thumb) var(--scroll-track); /* thumb track */
}

/* Optional: make scrollbars even lighter on specific boxes */
.news-scroll::-webkit-scrollbar-thumb{ opacity: .85; }
.news-scroll{ scrollbar-color: var(--scroll-thumb) var(--scroll-track); }



/* ==== Dark-mode contrast fixes for existing inline colors ==== */
/* Paper titles (blue-ish) */
body.dark-mode .papertitle { color: #b9c8ff !important; }   /* soft light-blue */

/* Headings that used inline green (#236e23) */
body.dark-mode h2, 
body.dark-mode h3 { color: #8be28b !important; }            /* readable green */

/* Any element colored exactly #236e23 (extra catch-all) */
body.dark-mode [style*="#236e23"] { color: #8be28b !important; }

/* Any element colored exactly #24238c (deep indigo) */
body.dark-mode [style*="#24238c"] { color: #b9c8ff !important; }

/* Status lines that use crimson */
body.dark-mode [style*="crimson"] { color: #ff7a7a !important; }

/* Links: ensure good contrast in dark mode (if not set already) */
body.dark-mode a { color: #9ecaff; }
body.dark-mode a:hover { color: #cfe4ff; }

/* remove the default gap around the page */
html, body {
  margin: 0;
  padding: 0;
}

/* (optional) ensure header truly hugs the top edge */
.site-header {
  position: sticky;   /* or fixed, if you prefer */
  top: 0;
  width: 100%;
}

/* 1) Never overflow horizontally */
html, body { margin: 0; padding: 0; overflow-x: hidden; }

/* 2) Header sizing: don’t use 100vw; include padding in width */
.site-header { width: 100%; box-sizing: border-box; }

/* 3) Nav stays inside the header box */
.site-nav { max-width: 100%; }

/* 4) If you used 100vw anywhere, neutralize it */
*[style*="100vw"], .full-viewport { width: 100% !important; }

/* 5) Search modal/backdrop – ensure they don’t push width */
#search-modal { inset: 0; }
.search-panel { max-width: min(800px, 92vw); }

.page-title {
  position: sticky;
  top: calc(var(--header-h, 64px) + 10px);  /* just below header */
  background: var(--bg);
  z-index: 800;
  padding: 8px 0;
}

.page-title {
  position: sticky;
  top: calc(var(--header-h, 64px) + 10px);  /* just below header */
  background: var(--bg);
  z-index: 800;
  padding: 8px 0;
}

/* === Fixed header === */
:root { --header-h: 64px; }     /* fallback height; JS below will keep this in sync */

.site-header{
  position: fixed;               /* was: sticky */
  top: 0; left: 0; right: 0;
  width: 100%;
  z-index: 1000;
  box-sizing: border-box;        /* prevents horizontal scroll from padding */
}

/* Give the document space so content isn't hidden under the fixed header */
body { padding-top: var(--header-h); }

/* Anchor targets (e.g., #publications) won’t be covered by the fixed bar */
[id] { scroll-margin-top: var(--header-h); }