/* Minimal academic layout with a quiet terminal / i3 workspace vocabulary. */
:root {
  color-scheme: light;
  --bg: #f6f5f4;
  --surface: #eeedeb;
  --ink: #2e3436;
  --muted: #5e5c64;
  --line: #deddda;
  --selection-bg: #deddda;
  --selection-text: #2e3436;
  --cursor: #2e3436;
  --cursor-text: #f6f5f4;
  --ansi-black: #171421;
  --ansi-bright-black: #5e5c64;
  --bold-black: var(--ansi-black);
  --ansi-red: #c01c28;
  --ansi-bright-red: #a51d2d;
  --bold-red: var(--ansi-red);
  --ansi-green: #1a7f37;
  --ansi-bright-green: #26733a;
  --bold-green: var(--ansi-green);
  --ansi-yellow: #8f5902;
  --ansi-bright-yellow: #9c6b00;
  --bold-yellow: var(--ansi-yellow);
  --ansi-blue: #12488b;
  --ansi-bright-blue: #1c71d8;
  --bold-blue: var(--ansi-blue);
  --ansi-magenta: #813d9c;
  --ansi-bright-magenta: #9141ac;
  --bold-magenta: var(--ansi-magenta);
  --ansi-cyan: #0e7490;
  --ansi-bright-cyan: #007b83;
  --bold-cyan: var(--ansi-cyan);
  --ansi-white: #77767b;
  --ansi-bright-white: #2e3436;
  --bold-white: var(--ansi-white);
  --accent: var(--ansi-green);
  --accent-soft: #e5ebe1;
  --link: var(--ansi-blue);
  --mono: "DejaVu Sans Mono", "Liberation Mono", "SFMono-Regular", Consolas, monospace;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #000000;
  --surface: #171717;
  --ink: #ffffff;
  --muted: #d0cfcc;
  --line: #353535;
  --selection-bg: #333333;
  --selection-text: #ffffff;
  --cursor: #ffffff;
  --cursor-text: #000000;
  --ansi-black: #171421;
  --ansi-bright-black: #5e5c64;
  --bold-black: var(--ansi-bright-black);
  --ansi-red: #c01c28;
  --ansi-bright-red: #f66151;
  --bold-red: var(--ansi-bright-red);
  --ansi-green: #26a269;
  --ansi-bright-green: #33d17a;
  --bold-green: var(--ansi-bright-green);
  --ansi-yellow: #a2734c;
  --ansi-bright-yellow: #e9ad0c;
  --bold-yellow: var(--ansi-bright-yellow);
  --ansi-blue: #12488b;
  --ansi-bright-blue: #2a7bde;
  --bold-blue: var(--ansi-bright-blue);
  --ansi-magenta: #a347ba;
  --ansi-bright-magenta: #c061cb;
  --bold-magenta: var(--ansi-bright-magenta);
  --ansi-cyan: #2aa1b3;
  --ansi-bright-cyan: #33c7de;
  --bold-cyan: var(--ansi-bright-cyan);
  --ansi-white: #d0cfcc;
  --ansi-bright-white: #ffffff;
  --bold-white: var(--ansi-bright-white);
  --accent: var(--ansi-green);
  --accent-soft: #202020;
  /* Normal terminal blue is too dim for small links on black. */
  --link: var(--ansi-bright-blue);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 18px/1.8 var(--mono);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--selection-bg); color: var(--selection-text); }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 5px; }
a:hover { text-decoration: underline; }
button, input { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { line-height: 1.35; }
.accent, .prompt { color: var(--accent); }

.workspace-bar {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.bar-inner {
  max-width: 1200px;
  padding: 0 32px;
  margin: auto;
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
}
.hostname { text-decoration: none; white-space: nowrap; color: var(--ink); }
.hostname span { color: var(--accent); }
nav { display: flex; gap: 3px; margin-left: auto; }
.workspace {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 12px;
  color: var(--muted);
  text-decoration: none;
}
.workspace > span:first-child { color: var(--accent); }
.workspace.active, .workspace:hover { background: var(--accent-soft); color: var(--ink); text-decoration: none; }
.theme {
  display: flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 0;
  color: var(--ink);
  background: transparent;
  padding: 7px 10px;
  min-height: 40px;
  font-size: 14px;
}
.theme:hover { border-color: var(--accent); }

.layout {
  width: min(1100px, calc(100% - 80px));
  margin: 68px auto 0;
  display: grid;
  grid-template-columns: 255px minmax(0, 1fr);
  column-gap: 75px;
  align-items: start;
}
.profile { position: sticky; top: 114px; padding-bottom: 36px; }
.profile-photo { width: 164px; max-width: 100%; margin: 0 0 25px; }
.profile-photo img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; object-position: center; border: 1px solid var(--line); border-radius: 2px; background: var(--surface); }
h1 { font-size: 43px; font-weight: 700; letter-spacing: -2px; }
.role { font-size: 16px; margin-top: 20px; }
.institution { font-size: 15px; line-height: 1.8; color: var(--muted); margin-top: 12px; }
.profile-links { display: flex; flex-direction: column; align-items: start; gap: 10px; margin-top: 26px; font-size: 16px; }
.profile-links a { text-decoration: none; }
.profile-links a:hover { text-decoration: underline; }
.profile-links span { margin-left: 10px; }
.sidebar-note { margin-top: 42px; padding-top: 21px; border-top: 1px solid var(--line); color: var(--muted); font-size: 15px; }
.template-note { color: var(--muted); font-size: 14px; margin-top: 28px; line-height: 1.65; }
main { min-width: 0; }
.section { padding: 46px 0; border-top: 1px solid var(--line); }
.about { padding-top: 0; border-top: 0; }
.command { color: var(--muted); font-size: 14px; margin-bottom: 19px; }
.command span { color: var(--accent); }
h2 { font-size: 29px; letter-spacing: -1px; font-weight: 700; margin-bottom: 23px; }
.section > p:not(.command):not(.publication-count):not(.sample-note):not(.contact-note) { margin-bottom: 20px; }
.lead { font-size: 22px; line-height: 1.65; color: var(--ink); }
.interests { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: 14px; margin: 26px 0; }
.interests span::before { content: "#"; color: var(--accent); }
.text-link { font-size: 16px; text-decoration: none; display: inline-flex; gap: 12px; align-items: center; }
.text-link:hover { text-decoration: underline; }
.research-list { display: grid; gap: 25px; }
.research-list h3 { font-size: 19px; font-weight: 600; margin-bottom: 9px; }
.list-index { color: var(--accent); font-size: 16px; font-weight: 400; }
.research-list p { color: var(--muted); padding-left: 40px; font-size: 17px; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 18px; flex-wrap: wrap; margin-bottom: 25px; }
.section-heading h2 { margin-bottom: 0; }
.publication-tools { display: flex; flex-direction: column; align-items: stretch; gap: 20px; }
.filters { display: flex; flex-wrap: wrap; gap: 6px; }
.filters button {
  border: 1px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  padding: 7px 10px;
  min-height: 42px;
}
.filters button.active { color: var(--accent); background: var(--accent-soft); border-color: var(--line); }
.filters button:hover { border-color: var(--accent); }
.search { display: flex; gap: 12px; align-items: center; padding: 8px 12px; border: 1px solid var(--line); background: var(--bg); }
.search:focus-within { border-color: var(--accent); }
.search > span { color: var(--accent); }
.search input { caret-color: var(--cursor); width: 100%; min-width: 0; background: none; border: 0; color: var(--ink); font-size: 16px; line-height: 1.7; }
.search input::placeholder { color: var(--muted); }
.publication-count { margin: 22px 0 6px; font-size: 14px; color: var(--muted); }
.publication { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 8px 18px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.pub-year { font-size: 15px; color: var(--accent); padding-top: 3px; }
.publication h3 { font-size: 20px; font-weight: 600; line-height: 1.55; overflow-wrap: anywhere; }
.pub-authors { font-size: 16px; color: var(--muted); margin-top: 10px; line-height: 1.7; }
.pub-venue { font-size: 15px; margin-top: 9px; line-height: 1.8; overflow-wrap: anywhere; }
.pub-type { display: inline-block; font-size: 12px; color: var(--muted); margin-left: 10px; }
.pub-type::before { content: "["; }
.pub-type::after { content: "]"; }
.pub-actions { grid-column: 2; display: flex; flex-wrap: wrap; gap: 18px; align-items: center; margin-top: 6px; }
.pub-actions a, .pub-actions button { font: 14px/1.7 var(--mono); background: none; color: var(--link); padding: 5px 0; border: 0; border-bottom: 1px solid var(--line); text-decoration: none; border-radius: 0; }
.pub-actions a:hover, .pub-actions button:hover { border-bottom-color: var(--accent); }
.sample-note { font-size: 14px; color: var(--muted); margin-top: 24px; }
.empty { color: var(--muted); padding: 24px 0; }
.email-link { font-size: 19px; display: inline-block; overflow-wrap: anywhere; }
.contact-note { margin-top: 24px; color: var(--muted); font-size: 15px; }
footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 15px; border-top: 1px solid var(--line); padding: 25px 0 40px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); text-decoration: none; }
.skip { position: absolute; left: 20px; top: -150px; background: var(--ink); color: var(--bg); padding: 10px 15px; z-index: 10; }
.skip:focus { position: fixed; top: 10px; }

@media (max-width: 1000px) {
  .layout { grid-template-columns: 220px minmax(0, 1fr); gap: 40px; width: calc(100% - 64px); }
  .bar-inner { gap: 12px; padding-inline: 24px; }
  .workspace { padding-inline: 9px; gap: 6px; }
  h1 { font-size: 38px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 140px; }
  .bar-inner { flex-wrap: wrap; gap: 0; padding: 12px 20px 0; }
  .hostname { flex: 1; }
  .theme { margin-left: auto; }
  nav { order: 3; width: 100%; margin: 10px 0 0; gap: 4px; }
  .workspace { flex: 1; justify-content: center; padding: 10px 3px; font-size: 13px; gap: 6px; }
  .layout { width: calc(100% - 40px); grid-template-columns: minmax(0, 1fr); gap: 0; margin-top: 38px; }
  .profile { position: static; padding-bottom: 35px; border-bottom: 1px solid var(--line); margin-bottom: 35px; }
  .profile-photo { width: 144px; margin-bottom: 20px; }
  h1 { font-size: 40px; }
  .role { margin-top: 12px; }
  .institution br { display: none; }
  .institution > span { display: block; }
  .profile-links { flex-direction: row; flex-wrap: wrap; gap: 24px; margin-top: 20px; }
  .sidebar-note { margin-top: 23px; padding-top: 17px; }
  .sidebar-note br { display: none; }
  .template-note { margin-top: 15px; }
  .template-note br { display: none; }
  .section { padding-block: 35px; }
  .about { padding-top: 0; }
  h2 { font-size: 27px; }
  .lead { font-size: 21px; }
}
@media (max-width: 420px) {
  .workspace { font-size: 12px; gap: 4px; }
  .publication { grid-template-columns: minmax(0, 1fr); gap: 9px; }
  .pub-actions { grid-column: 1; }
  .publication h3 { font-size: 19px; }
  .pub-year { padding-top: 0; }
  .filters { gap: 2px; }
  .filters button { font-size: 14px; padding-inline: 8px; }
  .research-list p { padding-left: 0; }
  .email-link { font-size: 17px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Keep the full sidebar reachable on shorter desktop screens. */
@media (min-width: 761px) and (max-height: 850px) { .profile { position: static; } }

/* Alacritty highlighting: light bold uses normal; dark bold uses bright. */
.hl-black { color: var(--ansi-black); }
strong.hl-black, b.hl-black { color: var(--bold-black); }
.hl-red { color: var(--ansi-red); }
strong.hl-red, b.hl-red { color: var(--bold-red); }
.hl-green { color: var(--ansi-green); }
strong.hl-green, b.hl-green { color: var(--bold-green); }
.hl-yellow { color: var(--ansi-yellow); }
strong.hl-yellow, b.hl-yellow { color: var(--bold-yellow); }
.hl-blue { color: var(--ansi-blue); }
strong.hl-blue, b.hl-blue { color: var(--bold-blue); }
.hl-magenta { color: var(--ansi-magenta); }
strong.hl-magenta, b.hl-magenta { color: var(--bold-magenta); }
.hl-cyan { color: var(--ansi-cyan); }
strong.hl-cyan, b.hl-cyan { color: var(--bold-cyan); }
.hl-white { color: var(--ansi-white); }
strong.hl-white, b.hl-white { color: var(--bold-white); }
.hostname { color: var(--ansi-cyan); }
.role { color: var(--ansi-yellow); }
.command .command-name { color: var(--bold-blue); font-weight: 700; }
.command .command-file { color: var(--ansi-cyan); }
.command .command-prompt { color: var(--ansi-green); }
.interests span:nth-child(3n + 1) { color: var(--ansi-magenta); }
.interests span:nth-child(3n + 2) { color: var(--ansi-cyan); }
.interests span:nth-child(3n) { color: var(--ansi-green); }
.pub-year { color: var(--ansi-yellow); }
.pub-type-article { color: var(--ansi-magenta); }
.pub-type-inproceedings { color: var(--ansi-cyan); }
.pub-type-misc, .pub-type-book, .pub-type-phdthesis, .pub-type-mastersthesis { color: var(--ansi-yellow); }

/* Keep small colored labels readable while retaining the original ANSI palette. */
:root[data-theme="dark"] .interests span:nth-child(3n + 1),
:root[data-theme="dark"] .pub-type-article { color: var(--ansi-bright-magenta); }
.filters button.active, .workspace.active > span:first-child, .workspace:hover > span:first-child { color: var(--ink); }

/* Language control shares the terminal-style theme button. */
.language { gap: 5px; white-space: nowrap; }
html[lang="en"] .language-en, html[lang="vi"] .language-vi { font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
.workspace > [data-i18n] { color: inherit; }
@media (max-width: 760px) { .language { margin-left: auto; margin-right: 8px; } .theme { margin-left: 0; } }
@media (min-width: 761px) and (max-width: 1100px) { .hostname { display: none; } nav { margin-left: 0; margin-right: auto; } .bar-inner { gap: 8px; } }

/* Academic details remain plain, readable, and aligned with the profile. */
.profile-photo img { object-position: 50% 20%; }
.institution { overflow-wrap: anywhere; }
.profile-location { font-size: 15px; color: var(--muted); margin-top: 24px; }
.academic-details { margin-top: 35px; }
.academic-details h3 { font-size: 19px; margin-bottom: 18px; }
.education-list { margin: 0 0 28px; }
.education-list > div { display: grid; grid-template-columns: 55px minmax(0, 1fr); gap: 15px; margin-bottom: 17px; }
.education-list dt { font-size: 15px; color: var(--ansi-yellow); }
.education-list dd { margin: 0; font-size: 16px; }
.education-list dd strong { display: block; font-weight: 600; }
.education-list dd > span { color: var(--muted); font-size: 15px; }
.scholarships { padding-left: 20px; margin: 0; font-size: 16px; }
.award-year { color: var(--ansi-yellow); white-space: nowrap; }
.interests > span { color: inherit; }
.interests > span:nth-child(3n + 1) { color: var(--ansi-magenta); }
.interests > span:nth-child(3n + 2) { color: var(--ansi-cyan); }
.interests > span:nth-child(3n) { color: var(--ansi-green); }
@media (max-height: 1050px) and (min-width: 761px) { .profile { position: static; } }

/* Consistent, keyboard-accessible links for contact and academic identities. */
.profile-links { display: grid; grid-template-columns: minmax(0, 1fr); gap: 9px; width: 100%; align-items: stretch; }
.profile-links .profile-button {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) 14px;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--bg);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
}
.profile-links .profile-button svg { color: var(--ansi-cyan); }
.profile-links .profile-button span { margin: 0; }
.profile-links .profile-button:hover { text-decoration: none; background: var(--accent-soft); border-color: var(--accent); }
.profile-links .button-arrow { color: var(--muted); font-size: 14px; }
.profile-resources { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; font-size: 14px; }
.profile-resources a { text-decoration: none; }
.profile-resources a:hover { text-decoration: underline; }
@media (min-width: 600px) and (max-width: 760px) {
  .profile-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Icon-only theme control; the accessible label describes its next action. */
#theme-toggle { width: 44px; min-height: 44px; padding: 0; justify-content: center; flex-shrink: 0; }
#theme-icon, #theme-icon svg { display: block; }
#theme-icon .icon-sun { display: none; }
:root[data-theme="dark"] #theme-icon .icon-moon { display: none; }
:root[data-theme="dark"] #theme-icon .icon-sun { display: block; }