/* =========================================================================
   Academic template — stylesheet
   Single centered column, Inter + JetBrains Mono.
   Change the accent color via "accent" in config.yaml.
   ========================================================================= */

:root {
  color-scheme: light;
  --accent: var(--accent-base, #4f46e5);

  --bg: #ffffff;
  --surface: #f4f4f5;
  --border: #e4e4e7;
  --text: #18181b;
  --muted: #71717a;
  --link: var(--accent);

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --maxw: 760px;
  --transition: 200ms ease;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f0f11;
  --surface: #1c1c20;
  --border: #2a2a30;
  --text: #ededed;
  --muted: #9a9aa3;
  --link: #8b85f5; /* fallback for browsers without color-mix */
  --link: color-mix(in srgb, var(--accent-base, #4f46e5) 60%, white);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { background-color: var(--bg); color: var(--text); }

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: none; text-underline-offset: 2px; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ---------------------------------------------------------------- boot */
.boot {
  min-height: 100vh;
  display: grid;
  place-content: center;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 2rem;
  text-align: center;
}
.boot-error { color: #c0392b; max-width: 640px; line-height: 1.6; font-family: var(--font-sans); }

/* --------------------------------------------------------------- toggle */
.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 20;
  width: 40px;
  height: 40px;
  display: grid;
  place-content: center;
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.theme-toggle:hover { color: var(--text); border-color: var(--text); }
.theme-toggle svg { width: 18px; height: 18px; }

/* ----------------------------------------------------------------- layout */
/* ----------------------------------------------------------------- page */
.page {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) 1.3rem 3rem;
  animation: fade 400ms ease both;
}
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* --------------------------------------------------------------- header */
.profile-header {
  display: flex;
  gap: clamp(1.1rem, 4vw, 2rem);
  align-items: center;
  margin-bottom: 1.7rem;
}
.avatar {
  width: clamp(98px, 22vw, 140px);
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px var(--border);
}
@supports (background: color-mix(in srgb, red, blue)) {
  .avatar { box-shadow: 0 0 0 1px var(--border), 0 0 0 6px color-mix(in srgb, var(--accent) 13%, transparent); }
}
.identity { min-width: 0; }
.name {
  font-weight: 800;
  font-size: clamp(1.95rem, 6vw, 2.7rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
}
.role { color: var(--muted); font-size: 0.97rem; margin: 0 0 0.75rem; }
.links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}
.links a {
  display: grid;
  place-content: center;
  width: 22px;
  height: 22px;
  color: var(--muted);
  transition: color var(--transition), transform var(--transition);
}
.links a:hover { color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.links a svg { width: 20px; height: 20px; }

/* ----------------------------------------------------------------- tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 2.6rem;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.77rem;
  padding: 0.3rem 0.7rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--muted);
  transition: color var(--transition), border-color var(--transition);
}
.tag:hover { color: var(--text); border-color: var(--accent); }

/* -------------------------------------------------------- section label */
.section-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
  margin: 2.9rem 0 1.6rem;
}
.section-label::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--accent);
  transform: rotate(45deg);
  flex-shrink: 0;
}

/* ---------------------------------------------------------------- about */
.about { font-size: 1.02rem; }
.about p { margin: 0 0 1rem; }
.about p:last-child { margin-bottom: 0; }

/* ----------------------------------------------------------------- news */
.news-list { display: flex; flex-direction: column; gap: 1.2rem; }
.news-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
}
.news-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: #fff;
  background: var(--news-color, var(--muted));
  padding: 0.26rem 0.5rem;
  border-radius: 6px;
  white-space: nowrap;
  margin-top: 0.15rem;
}
.news-text { margin: 0; }
.news-text s { color: var(--muted); }

/* --------------------------------------------------------- publications */
.pub-list { display: flex; flex-direction: column; gap: 1.7rem; }
.pub { position: relative; }
.pub::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}
.pub:hover::before { opacity: 1; }
.pub:hover .pub-title a { color: var(--link); }
.pub-title { font-weight: 700; font-size: 1.06rem; line-height: 1.3; margin: 0 0 0.35rem; }
.pub-title a { color: var(--text); }
.pub-title a:hover { color: var(--link); }
.pub-authors { color: var(--muted); font-size: 0.95rem; margin: 0 0 0.35rem; }
.pub-authors b { color: var(--text); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
.pub-venue {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--text);
  margin: 0 0 0.55rem;
}
.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

/* ------------------------------------------------------------- teaching */
.course {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  margin-bottom: 1.5rem;
}
.course-logo {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--surface);
  box-shadow: 0 0 0 1px var(--border);
}
.course-main { flex: 1; min-width: 0; }
.course-title { font-weight: 700; font-size: 1rem; margin: 0 0 0.2rem; }
.course-title a { color: var(--text); }
.course-title a:hover { color: var(--link); }
.course-sub { color: var(--muted); font-size: 0.92rem; margin: 0; }
.course-term {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* --------------------------------------------------------------- footer */
.page-foot {
  margin-top: 3.5rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--muted);
  text-align: center;
}

.empty { color: var(--muted); font-style: italic; }

/* ------------------------------------------------------------ responsive */
@media (max-width: 540px) {
  .course { flex-wrap: wrap; }
  .course-term { width: 100%; padding-left: calc(46px + 0.9rem); }
}

/* ----------------------------------------------------------- a11y */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ------------------------------------------------------ custom sections */
.section-body p { margin: 0 0 1rem; }
.section-body p:last-child { margin-bottom: 0; }
.body-list { margin: 0.2rem 0 1rem; padding-left: 1.25rem; }
.body-list li { margin: 0 0 0.45rem; padding-left: 0.15rem; }
.body-list li:last-child { margin-bottom: 0; }
.body-list li::marker { color: var(--accent); }

/* ----------------------------------------------------- status badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.42rem 0.8rem;
  border-radius: 8px;
  border: 1px solid transparent;
  margin: 0 0 1.3rem;
}
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: currentColor; flex-shrink: 0; }
.status-open   { color: #15803d; background: rgba(22,163,74,.12);  border-color: rgba(22,163,74,.30); }
.status-filled { color: #b45309; background: rgba(217,119,6,.12);  border-color: rgba(217,119,6,.32); }
.status-neutral{ color: var(--accent); background: rgba(79,70,229,.10); border-color: rgba(79,70,229,.28); }
[data-theme="dark"] .status-open   { color: #4ade80; }
[data-theme="dark"] .status-filled { color: #fbbf24; }

/* ----------------------------------------------------- copy box */
.copybox {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
  margin: 0.3rem 0 1.1rem;
}
.copybox-code {
  flex: 1;
  min-width: 0;
  padding: 0.6rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}
.copybox-btn {
  flex-shrink: 0;
  border: none;
  border-left: 1px solid var(--border);
  background: var(--bg);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0 0.95rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.copybox-btn:hover { background: var(--surface); }
.copybox-btn.copied { color: #15803d; }

/* ----------------------------------------------------- side tab + drawer */
.drawer-tab {
  position: fixed;
  right: 0;
  top: 40%;
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  writing-mode: vertical-rl;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-right: none;
  border-radius: 12px 0 0 12px;
  padding: 0.95rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: -3px 0 14px rgba(0,0,0,.07);
  transition: transform var(--transition), box-shadow var(--transition);
}
.drawer-tab:hover { transform: translateX(-3px); box-shadow: -5px 0 18px rgba(0,0,0,.12); }
.drawer-tab .status-dot { writing-mode: horizontal-tb; }
.drawer-tab.status-open   { color: #15803d; border-color: rgba(22,163,74,.45); }
.drawer-tab.status-filled { color: #b45309; border-color: rgba(217,119,6,.45); }
[data-theme="dark"] .drawer-tab { background: var(--surface); }
[data-theme="dark"] .drawer-tab.status-open   { color: #4ade80; }
[data-theme="dark"] .drawer-tab.status-filled { color: #fbbf24; }

.drawer-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 40; opacity: 0;
  transition: opacity 260ms ease;
}
.drawer-overlay.open { opacity: 1; }
.drawer {
  position: fixed; top: 0; right: 0; height: 100%;
  width: min(430px, 100%);
  background: var(--bg); color: var(--text);
  border-left: 1px solid var(--border);
  z-index: 41; overflow-y: auto;
  padding: clamp(1.6rem, 4vw, 2.6rem);
  transform: translateX(100%);
  transition: transform 260ms ease;
  box-shadow: -12px 0 34px rgba(0,0,0,.14);
}
.drawer.open { transform: translateX(0); }
.drawer-close {
  position: absolute; top: 0.85rem; right: 0.95rem;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text); font-size: 1.4rem; line-height: 1; cursor: pointer;
}
.drawer-close:hover { color: var(--accent); border-color: var(--accent); }
.drawer-content .section-label { margin-top: 0.4rem; }
.drawer-content .section-body { font-size: 0.97rem; }
body.drawer-lock { overflow: hidden; }

@media (max-width: 980px) {
  .drawer-tab {
    writing-mode: horizontal-tb;
    flex-direction: row;
    top: auto; bottom: 1rem; right: 1rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.55rem 0.95rem;
    box-shadow: 0 4px 16px rgba(0,0,0,.14);
  }
  .drawer-tab:hover { transform: translateY(-2px); }
}