/* ============================================================
   Dianwei Chen – Personal Website  |  Premium UMD Design
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* UMD Brand */
  --umd-red:    #e21833;
  --umd-red-dk: #b8102a;
  --umd-gold:   #ffd200;
  --umd-gold-dk:#c9a600;
  --umd-black:  #0d0d0d;
  --umd-white:  #ffffff;

  /* Surface & text */
  --bg:            #fafafa;
  --bg-elevated:   #ffffff;
  --bg-card:       rgba(255,255,255,0.92);
  --bg-card-hover: rgba(255,255,255,0.98);
  --text:          #111111;
  --text-muted:    #4a4a55;
  --text-faint:    #888899;
  --border:        rgba(0,0,0,0.08);

  /* Accent helpers */
  --accent:       var(--umd-red);
  --accent-soft:  rgba(226,24,51,.10);
  --accent-glow:  rgba(226,24,51,.30);
  --gold-soft:    rgba(255,210,0,.14);
  --gold-glow:    rgba(255,210,0,.40);
  /* AV / tech accent (sensor HUD feel) */
  --av-cyan:      #0ea5e9;
  --av-cyan-soft: rgba(14,165,233,.12);
  --av-cyan-glow: rgba(14,165,233,.25);
  --av-grid:      rgba(0,0,0,.03);

  /* Geometry */
  --radius:    14px;
  --radius-sm: 8px;
  --radius-xs: 5px;

  /* Typography */
  --font-display: 'Playfair Display', 'Source Serif 4', Georgia, serif;
  --font-serif:   'Source Serif 4', Georgia, serif;
  --font-sans:    'Inter', 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Layout */
  --max-width:  800px;
  --header-h:   68px;

  /* Motion */
  --t-fast:   0.18s ease;
  --t-mid:    0.28s cubic-bezier(.4,0,.2,1);
  --t-slow:   0.45s cubic-bezier(.4,0,.2,1);
  --t-spring: 0.55s cubic-bezier(.34,1.56,.64,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* ---- Custom cursor (red arrow SVG, data-URI) ---- */
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  background: #ffffff;
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Cpath fill='%23e21833' d='M4 2l16 10-7 1.5-2 8.5L4 2z'/%3E%3C/svg%3E") 4 4, auto;
}
.page-wrap { position: relative; }

a, button, [role="button"], .nav-link, .icon-link, .tag-list li, .nav-inline {
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Cpath fill='%23e21833' d='M8 2v4l4-2 2 8 4-2-10-8z'/%3E%3C/svg%3E") 6 2, pointer;
}

/* ---------- Layout ---------- */
.page-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  width: 100%;
}

/* ---------- UMD Top accent bar ---------- */
.umd-topbar {
  height: 4px;
  background: linear-gradient(90deg,
    var(--umd-red) 0%, var(--umd-gold) 50%, var(--umd-red) 100%);
  background-size: 200% 100%;
  animation: shiftBar 4s linear infinite;
}
@keyframes shiftBar {
  0%   { background-position: 0% 0; }
  100% { background-position: 200% 0; }
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: var(--header-h);
  padding: 0 2rem;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.6);
  box-shadow:
    0 2px 20px rgba(0,0,0,.12),
    0 1px 0 rgba(255,255,255,.9) inset;
}

/* Logo */
.logo-wrap {
  text-decoration: none;
  color: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.logo-wrap::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 32px;
  background: linear-gradient(180deg, var(--umd-red), var(--umd-gold));
  border-radius: 3px;
  transition: height var(--t-mid);
}
.logo-wrap:hover::before { height: 40px; }
.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  transition: color var(--t-fast), transform var(--t-mid);
}
.logo-wrap:hover .logo {
  color: var(--umd-red);
  transform: translateX(3px);
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}
.nav-link {
  position: relative;
  padding: 0.45rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 999px;
  transition: color var(--t-fast), background var(--t-fast), transform var(--t-mid), box-shadow var(--t-mid);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--umd-red);
  border-radius: 1px;
  transform: translateX(-50%);
  transition: width var(--t-mid);
}
.nav-link:hover { color: var(--umd-red); background: var(--accent-soft); }
.nav-link:hover::after { width: 40%; }
.nav-link:hover { transform: translateY(-2px); box-shadow: 0 4px 14px var(--accent-glow); }
.nav-link.active {
  color: var(--umd-red);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1.5px var(--umd-red);
}
.nav-link.active::after { width: 50%; }

/* Header external links */
.header-links { display: flex; align-items: center; gap: 0.4rem; }
.icon-link {
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.6);
  transition: all var(--t-mid);
}
.icon-link:hover {
  color: var(--umd-white);
  background: linear-gradient(135deg, var(--umd-red), var(--umd-red-dk));
  border-color: var(--umd-red);
  transform: translateY(-3px) scale(1.06);
  box-shadow: 0 6px 20px rgba(226,24,51,.4);
}

/* ---------- Panels ---------- */
.panel { display: none; }
.panel.active { display: block; }
.panel[hidden] { display: none !important; }
.panel.active { animation: panelIn 0.4s var(--t-slow) both; }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Content blocks (frosted glass cards) ---------- */
.content-block {
  margin-bottom: 2rem;
  padding: 2rem 2rem 1.75rem;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.75);
  box-shadow:
    0 4px 24px rgba(0,0,0,.14),
    0 1px 0 rgba(255,255,255,.9) inset;
  transition: box-shadow var(--t-mid), transform var(--t-mid), border-color var(--t-fast);
  animation: blockFadeIn 0.55s ease backwards;
}
.content-block:hover {
  box-shadow:
    0 12px 40px rgba(0,0,0,.18),
    0 0 0 1.5px rgba(255,255,255,.7),
    0 1px 0 rgba(255,255,255,.9) inset;
  transform: translateY(-2px);
}

/* About block: subtle sensor-grid background */
.content-block--about {
  position: relative;
  overflow: hidden;
}
.content-block--about::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--av-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--av-grid) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  opacity: 0.6;
}

.panel.active .content-block:nth-child(1) { animation-delay: 0.04s; }
.panel.active .content-block:nth-child(2) { animation-delay: 0.12s; }
.panel.active .content-block:nth-child(3) { animation-delay: 0.20s; }
.panel.active .content-block:nth-child(4) { animation-delay: 0.28s; }
.panel.active .content-block:nth-child(5) { animation-delay: 0.36s; }
.panel.active .content-block:nth-child(6) { animation-delay: 0.44s; }
.panel.active .content-block:nth-child(7) { animation-delay: 0.52s; }
@keyframes blockFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* h2 section heading */
.content-block h2 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
  color: var(--text);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.content-block h2::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 1.2em;
  background: linear-gradient(180deg, var(--umd-red), var(--umd-gold));
  border-radius: 3px;
  flex-shrink: 0;
}
.content-block h2::after {
  content: '';
  display: block;
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--umd-red) 0%, var(--umd-gold) 50%, transparent 100%);
  border-radius: 1px;
  transform-origin: left;
  transition: transform var(--t-mid);
}
.content-block h2:hover::after { transform: scaleX(1.05); }

/* ---------- Home: Hero ---------- */
.hero {
  text-align: center;
  margin-bottom: 2rem;
}

/* Name / tagline card */
.hero-intro {
  position: relative;
  overflow: hidden;
  padding: 2.25rem 2.5rem;
  margin-bottom: 1.75rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow:
    0 8px 40px rgba(0,0,0,.22),
    0 1px 0 rgba(255,255,255,.9) inset;
}
/* decorative corner accents */
.hero-intro::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 120px; height: 4px;
  background: linear-gradient(90deg, var(--umd-red), transparent);
  border-radius: 2px 0 0 0;
}
.hero-intro::after {
  content: '';
  position: absolute;
  bottom: 0; right: 0;
  width: 120px; height: 4px;
  background: linear-gradient(270deg, var(--umd-gold), transparent);
  border-radius: 0 0 2px 0;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.035em;
  margin: 0 0 0.4em;
  color: var(--text);
  /* shimmer effect */
  background: linear-gradient(120deg, #111 30%, var(--umd-red) 50%, #111 70%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 5s linear infinite;
}
@keyframes shimmer {
  0%   { background-position: 200% center; }
  100% { background-position: -200% center; }
}
.hero-tagline {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.6;
  letter-spacing: 0.01em;
}

/* AV focus pills (autonomous driving theme) */
.hero-av-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}
.hero-av-pill {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--av-cyan);
  background: var(--av-cyan-soft);
  border: 1px solid rgba(14,165,233,.25);
  border-radius: 999px;
  box-shadow: 0 0 0 0 rgba(14,165,233,.2);
  transition: color var(--t-fast), background var(--t-mid), border-color var(--t-mid), box-shadow var(--t-mid), transform var(--t-mid);
}
.hero-av-pill:hover {
  color: #fff;
  background: var(--av-cyan);
  border-color: var(--av-cyan);
  box-shadow: 0 4px 20px var(--av-cyan-glow);
  transform: translateY(-2px) scale(1.05);
}
.hero-toolchain {
  margin: 0.6rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--text-faint);
  opacity: 0.9;
}

/* Photos row */
.hero-photos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0;
}
.hero-image {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  flex: 1 1 200px;
  max-width: 280px;
  border: 2px solid rgba(255,255,255,.5);
  box-shadow: 0 10px 36px rgba(0,0,0,.32);
  transition: transform var(--t-spring), box-shadow var(--t-mid), border-color var(--t-fast);
}
.hero-image:hover {
  transform: scale(1.05) translateY(-6px) rotate(-0.5deg);
  box-shadow:
    0 24px 56px rgba(226,24,51,.3),
    0 0 0 2px var(--umd-red);
  border-color: var(--umd-red);
}
.hero-image--selfie,
.hero-image--max { max-width: 280px; }
.hero-image img {
  display: block;
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.hero-image:hover img { transform: scale(1.08); }
.hero-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 280px;
  color: var(--text-faint);
  font-size: 0.9rem;
}

/* ---------- Terps Football Strip ---------- */
.terps-strip {
  position: relative;
  margin-top: 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(0,0,0,.22);
  transition: transform var(--t-mid), box-shadow var(--t-mid);
}
.terps-strip:hover {
  transform: scale(1.01);
  box-shadow: 0 12px 36px rgba(226,24,51,.25);
}
.terps-strip img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.terps-strip:hover img { transform: scale(1.04); }
.terps-strip::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(226,24,51,.82) 0%,
    rgba(0,0,0,.55) 55%,
    rgba(255,210,0,.25) 100%
  );
}
.terps-badge {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--umd-white);
  text-shadow:
    0 2px 12px rgba(0,0,0,.6),
    0 0 30px rgba(255,210,0,.3);
  letter-spacing: 0.05em;
}
.terps-strip--small {
  margin-top: 0;
  margin-bottom: 1.5rem;
  height: 76px;
}
.terps-strip--small .terps-badge { font-size: 1.05rem; }
.terps-proud { color: var(--umd-red); font-weight: 700; }

/* ---------- Stats / numbers row ---------- */
.stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.5rem;
}
.stat-card {
  position: relative;
  flex: 1 1 120px;
  text-align: center;
  padding: 1rem 1.25rem;
  background: linear-gradient(135deg, var(--accent-soft), var(--gold-soft));
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,210,0,.25);
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
  transition: transform var(--t-spring), box-shadow var(--t-mid), border-color var(--t-mid);
  overflow: hidden;
}
/* HUD-style corner accent (sensor FOV feel) */
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 28px 28px 0;
  border-color: transparent rgba(14,165,233,.18) transparent transparent;
  border-radius: 0 0 0 4px;
  transition: border-color var(--t-mid);
}
.stat-card:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 10px 28px rgba(226,24,51,.15), 0 0 20px var(--av-cyan-glow);
  border-color: rgba(14,165,233,.2);
}
.stat-card:hover::before {
  border-right-color: rgba(14,165,233,.35);
}
.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--umd-red);
  letter-spacing: -0.04em;
}
.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* ---------- About me ---------- */
.about-lead {
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--text);
  margin: 0 0 1.25rem;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--umd-red);
  background: linear-gradient(90deg, var(--gold-soft), transparent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.about-quote {
  position: relative;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-style: italic;
  font-weight: 400;
  color: var(--text-muted);
  margin: 0 0 1.5rem;
  padding: 1rem 1.5rem 1rem 1.75rem;
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--gold-soft) 100%);
  border-left: 4px solid var(--umd-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.about-quote::before {
  content: '\201C';
  position: absolute;
  top: -0.2em;
  left: 0.3em;
  font-size: 3.5em;
  color: rgba(226,24,51,.15);
  font-family: Georgia, serif;
  line-height: 1;
  pointer-events: none;
}
.about-quote cite {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

.prose { color: var(--text-muted); }
.prose p { margin: 0 0 1rem; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text); font-weight: 600; }
.prose em { font-style: italic; color: var(--text); }
.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(226,24,51,.35);
  transition: color var(--t-fast), text-decoration-color var(--t-fast), text-shadow var(--t-fast);
}
.prose a:hover {
  color: var(--umd-red-dk);
  text-decoration-color: var(--umd-red);
  text-shadow: 0 0 18px var(--accent-glow);
}
.prose.intro { margin-bottom: 1.25rem; }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.15em 0.45em;
  background: rgba(226,24,51,.07);
  border-radius: 4px;
  color: var(--umd-red-dk);
}

/* ---------- Tag list (research interests) ---------- */
.tag-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
/* Research interests: waypoint/node style (AV path feel) */
.content-block--research .tag-list { gap: 0.65rem; }
.tag-list li {
  position: relative;
  padding: 0.5rem 1.15rem 0.5rem 2rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1.5px solid rgba(226,24,51,.2);
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
  transition: all var(--t-mid);
}
.tag-list li::before {
  content: '';
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--av-cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--bg-elevated), 0 0 8px var(--av-cyan-glow);
  transition: background var(--t-mid), box-shadow var(--t-mid), transform var(--t-mid);
}
.tag-list li:hover {
  color: var(--umd-white);
  background: linear-gradient(135deg, var(--umd-red), var(--umd-red-dk));
  border-color: var(--umd-red);
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 8px 24px rgba(226,24,51,.35), 0 0 24px var(--av-cyan-glow);
}
.tag-list li:hover::before {
  background: var(--umd-gold);
  box-shadow: 0 0 0 2px var(--umd-red-dk), 0 0 14px rgba(255,210,0,.6);
  transform: translateY(-50%) scale(1.3);
}

/* ---------- Featured work grid ---------- */
.content-block--featured h2 {
  display: flex;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.content-block--featured .featured-grid {
  clear: both;
  width: 100%;
}
.featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 520px) {
  .featured-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 700px) {
  .featured-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.featured-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.55rem;
  min-height: 100%;
  min-width: 0;
  padding: 1.1rem 1.15rem 1rem;
  padding-top: 1.35rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0,0,0,.08);
  background: rgba(255,255,255,.92);
  text-decoration: none;
  color: inherit;
  transition: transform var(--t-mid), box-shadow var(--t-mid), border-color var(--t-fast);
  position: relative;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.featured-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: linear-gradient(90deg, var(--umd-red), var(--umd-gold));
}
.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 36px rgba(226,24,51,.14);
  border-color: rgba(226,24,51,.22);
}
.featured-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--av-cyan);
  background: var(--av-cyan-soft);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  align-self: flex-start;
  flex-shrink: 0;
}
.featured-title {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.featured-desc {
  display: block;
  flex: 1 1 auto;
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--text-muted);
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.featured-cta {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--umd-red);
  flex-shrink: 0;
}
.featured-card:hover .featured-cta {
  color: var(--umd-red-dk);
}

/* ---------- Home: Timeline ---------- */
.content-block--timeline {
  position: relative;
}
.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 0.5rem;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0.65rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--umd-red), var(--umd-gold), var(--av-cyan));
  opacity: 0.85;
}
.timeline-item {
  position: relative;
  padding: 0 0 1.5rem 2.25rem;
  margin: 0;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 0.15rem;
  top: 0.35rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 3px solid var(--umd-red);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 2px 8px rgba(0,0,0,.12);
  z-index: 1;
  transition: transform var(--t-mid), border-color var(--t-mid), box-shadow var(--t-mid);
}
.timeline-item:hover .timeline-dot {
  transform: scale(1.15);
  border-color: var(--av-cyan);
  box-shadow: 0 0 0 4px var(--av-cyan-soft), 0 4px 14px var(--av-cyan-glow);
}
.timeline-item--current .timeline-dot {
  border-color: var(--umd-gold);
  background: linear-gradient(135deg, var(--umd-red), var(--umd-gold));
  box-shadow: 0 0 0 3px var(--gold-soft), 0 0 16px rgba(255,210,0,.35);
}
.timeline-date {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--av-cyan);
  margin-bottom: 0.35rem;
}
.timeline-title {
  display: block;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
  margin-bottom: 0.4rem;
}
.timeline-desc {
  display: block;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text-muted);
}

/* ---------- News tab ---------- */
.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.news-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 1rem 1.25rem;
  padding: 1.25rem 1.25rem 1.25rem 1rem;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--umd-red);
  background: linear-gradient(90deg, var(--accent-soft), rgba(255,255,255,.4));
  box-shadow: 0 2px 12px rgba(0,0,0,.05);
  transition: border-left-color var(--t-mid), box-shadow var(--t-mid), transform var(--t-mid);
}
.news-item:hover {
  border-left-color: var(--umd-gold);
  box-shadow: 0 6px 24px rgba(226,24,51,.1);
  transform: translateX(4px);
}
.news-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--umd-red);
  line-height: 1.4;
}
.news-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--umd-white);
  background: var(--umd-red);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  margin-right: 0.4rem;
  vertical-align: middle;
  animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}
.news-body { min-width: 0; }
.news-headline {
  display: block;
  font-size: 1.02rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.news-text {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
}
.news-text:last-of-type { margin-bottom: 0; }
.news-links {
  margin: 0.5rem 0 0;
  font-size: 0.88rem;
}
.news-links a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
.news-links a:hover { text-decoration: underline; }
a.nav-inline {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
a.nav-inline:hover { color: var(--umd-red-dk); }

/* ---------- CV tab (embedded PDF) ---------- */
.content-block--cv .cv-intro a {
  font-weight: 600;
}
.cv-pdf-wrap {
  margin-top: 1rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,.12);
  background: rgba(255,255,255,.6);
  min-height: 480px;
}
.cv-pdf-frame {
  display: block;
  width: 100%;
  height: 78vh;
  max-height: 900px;
  min-height: 480px;
  border: none;
}
.cv-pdf-hint {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ---------- Widgets row (views, GitHub, tip) ---------- */
.widgets-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
  margin-bottom: 1.25rem;
}
.widget-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.25rem 1rem;
  background: rgba(255,255,255,.85);
  border: 1px solid rgba(226,24,51,.12);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
  transition: transform var(--t-mid), box-shadow var(--t-mid), border-color var(--t-fast);
  text-decoration: none;
  color: inherit;
  min-height: 100px;
}
.widget-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(226,24,51,.12);
  border-color: rgba(226,24,51,.25);
}
.widget-icon {
  font-size: 1.5rem;
  margin-bottom: 0.35rem;
  opacity: 0.9;
}
.widget-views-count {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--umd-red);
  line-height: 1.2;
}
.widget-views-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-top: 0.2rem;
}
.widget-github {
  overflow: hidden;
}
.widget-github-img {
  width: 100%;
  max-width: 200px;
  height: auto;
  display: block;
  border-radius: 6px;
  transition: transform var(--t-mid);
}
.widget-card.widget-github:hover .widget-github-img {
  transform: scale(1.03);
}
.widget-github-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--umd-red);
  margin-top: 0.5rem;
}
.widget-tip {
  align-items: flex-start;
  text-align: left;
}
.widget-tip-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--av-cyan);
  margin-bottom: 0.5rem;
}
.widget-tip-text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-muted);
  min-height: 2.5em;
}

/* Local time strip */
.widget-clock {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--av-cyan-soft), transparent);
  border-radius: 999px;
  border: 1px solid rgba(14,165,233,.15);
}
.widget-clock-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}
.widget-clock-time {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--av-cyan);
}

/* ---------- Visitor map ---------- */
.globe-wrap {
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 0.75rem;
  background: radial-gradient(ellipse at center, rgba(226,24,51,.06) 0%, transparent 70%);
}
.globe-wrap iframe,
.globe-wrap > div { border: none !important; border-radius: var(--radius); }
.visitor-iframe {
  width: 100%;
  min-height: 380px;
  height: 380px;
  border: none;
  border-radius: var(--radius);
}

/* ---------- Publications ---------- */
.pub-subtitle {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--umd-red);
  margin: 1.75rem 0 0.85rem;
  padding: 0.4rem 0.85rem;
  background: var(--accent-soft);
  border-radius: 999px;
  display: inline-block;
}
.pub-subtitle:first-of-type { margin-top: 0.25rem; }
.pub-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.pub-item {
  padding: 1.1rem 1.25rem 1.1rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  border-left: 3px solid rgba(226,24,51,.25);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  background: rgba(255,255,255,.55);
  transition: border-left-color var(--t-fast), background var(--t-mid), box-shadow var(--t-mid), transform var(--t-mid);
}
.pub-item:hover {
  border-left-color: var(--umd-red);
  background: rgba(255,255,255,.9);
  box-shadow: 0 4px 20px rgba(226,24,51,.1);
  transform: translateX(4px);
}
.pub-title {
  font-weight: 700;
  font-size: 0.97rem;
  color: var(--text);
  line-height: 1.45;
}
.pub-authors {
  font-size: 0.88rem;
  color: var(--text-muted);
}
.pub-venue {
  font-size: 0.88rem;
  color: var(--text-faint);
  font-style: italic;
}
.pub-links { font-size: 0.85rem; margin-top: 0.2rem; }
.pub-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border: 1px solid rgba(226,24,51,.3);
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  transition: all var(--t-fast);
}
.pub-links a:hover {
  color: var(--umd-white);
  background: var(--umd-red);
  border-color: var(--umd-red);
  box-shadow: 0 4px 12px rgba(226,24,51,.35);
}

/* ---------- Services ---------- */
.service-subtitle {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--umd-red);
  margin: 1.75rem 0 0.85rem;
  padding: 0.4rem 0.85rem;
  background: var(--accent-soft);
  border-radius: 999px;
  display: inline-block;
}
.service-subtitle:first-of-type { margin-top: 0.25rem; }
.service-list {
  list-style: none;
  padding: 0;
  margin: 0 0 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.service-list li {
  position: relative;
  padding: 0.6rem 0.75rem 0.6rem 2rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.95rem;
  background: rgba(255,255,255,.5);
  border: 1px solid transparent;
  transition: all var(--t-mid);
}
.service-list li::before {
  content: '';
  position: absolute;
  left: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--umd-red), var(--umd-gold));
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(226,24,51,.35);
}
.service-list li:hover {
  color: var(--text);
  background: rgba(255,255,255,.85);
  border-color: rgba(255,210,0,.35);
  padding-left: 2.35rem;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.service-list li a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.service-list li a:hover { text-decoration: underline; }

/* ---------- Personal page ---------- */
.personal-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 1.5rem;
}
@media (max-width: 600px) {
  .personal-grid { grid-template-columns: 1fr; }
}
.personal-photo {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 3px solid rgba(255,255,255,.7);
  box-shadow:
    0 8px 32px rgba(0,0,0,.2),
    0 0 0 1px rgba(255,255,255,.4);
  transition: transform var(--t-spring), box-shadow var(--t-mid), border-color var(--t-fast);
}
.personal-photo:hover {
  transform: scale(1.04) rotate(0.5deg);
  box-shadow:
    0 20px 48px rgba(226,24,51,.25),
    0 0 0 2px var(--umd-red);
  border-color: rgba(226,24,51,.6);
}
.personal-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.personal-photo:hover img { transform: scale(1.06); }
.personal-photo--max {
  margin-top: 1.25rem;
  max-width: 100%;
}
.personal-photo--max img {
  aspect-ratio: 16/10;
}
.hobby-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0;
}
.hobby-tag {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: linear-gradient(135deg, var(--gold-soft), var(--accent-soft));
  border: 1px solid rgba(255,210,0,.3);
  border-radius: 999px;
  transition: all var(--t-mid);
}
.hobby-tag:hover {
  color: var(--umd-white);
  background: linear-gradient(135deg, var(--umd-gold), var(--umd-red));
  border-color: var(--umd-gold);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(255,210,0,.3);
}
.personal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.personal-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.5rem 1.15rem;
  border-radius: 999px;
  border: 1.5px solid rgba(226,24,51,.3);
  background: rgba(255,255,255,.7);
  transition: all var(--t-mid);
}
.personal-links a:hover {
  color: var(--umd-white);
  background: linear-gradient(135deg, var(--umd-red), var(--umd-red-dk));
  border-color: var(--umd-red);
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 24px rgba(226,24,51,.38);
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 1.75rem 2rem;
  background: linear-gradient(135deg, #1a0008 0%, var(--umd-red-dk) 50%, #0d0005 100%);
  color: var(--umd-white);
  text-align: center;
  font-size: 0.85rem;
  border-top: 3px solid var(--umd-gold);
  box-shadow: 0 -4px 24px rgba(0,0,0,.12);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -60px; left: 50%;
  width: 300px; height: 120px;
  background: radial-gradient(ellipse, rgba(255,210,0,.12) 0%, transparent 70%);
  transform: translateX(-50%);
  pointer-events: none;
}
.site-footer p { margin: 0; position: relative; z-index: 1; }
.site-footer a {
  color: var(--umd-gold);
  text-decoration: none;
  font-weight: 600;
  transition: text-shadow var(--t-fast);
}
.site-footer a:hover {
  text-decoration: underline;
  text-shadow: 0 0 14px rgba(255,210,0,.6);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .site-header {
    flex-wrap: wrap;
    height: auto;
    padding: 0.9rem 1rem;
    gap: 0.6rem;
  }
  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
  }
  .nav-link { padding: 0.38rem 0.75rem; font-size: 0.82rem; }
  .header-links { margin-left: auto; }
  .main { padding: 1.5rem 1rem 2.5rem; }
  .content-block { padding: 1.5rem 1.25rem; }
  .hero-intro { padding: 1.5rem 1.25rem; }
  .hero-title { font-size: 2.2rem; }
  .hero-photos { flex-direction: column; align-items: center; gap: 1.25rem; }
  .hero-image, .hero-image--selfie, .hero-image--max { max-width: 300px; }
  .terps-strip { height: 84px; }
  .terps-strip--small { height: 64px; }
  .terps-badge { font-size: 1.05rem; }
  .stats-row { gap: 0.75rem; }
  .stat-number { font-size: 1.8rem; }
  .hero-av-pills { margin-top: 0.75rem; gap: 0.4rem; }
  .hero-av-pill { padding: 0.28rem 0.7rem; font-size: 0.7rem; letter-spacing: 0.08em; }
  .hero-toolchain { font-size: 0.7rem; letter-spacing: 0.12em; }
  .widgets-row { grid-template-columns: 1fr; gap: 0.85rem; margin-bottom: 1rem; }
  .widget-card { min-height: 88px; padding: 1rem; }
  .widget-views-count { font-size: 1.5rem; }
  .widget-clock { flex-wrap: wrap; justify-content: center; font-size: 0.9rem; }
  .news-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 1.1rem;
  }
  .news-date { font-size: 0.8rem; }
  .timeline { padding-left: 0.25rem; }
  .timeline::before { left: 0.5rem; }
  .timeline-item { padding-left: 2rem; }
  .timeline-dot { left: 0; }
}