@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --text:    #1a1a1a;
  --muted:   #555;
  --accent:  #0066cc;
  --border:  #ddd;
  --bg:      #fff;
  --max-w:   820px;
  --font:    'Montserrat', sans-serif;
  --mono:    'Courier New', monospace;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 1rem;
}

/* ── Layout ── */
header {
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

header nav {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header nav .site-name {
  font-size: 1.05rem;
  font-weight: bold;
  text-decoration: none;
  color: var(--text);
}

header nav ul {
  list-style: none;
  display: flex;
  gap: 1.75rem;
}

header nav ul a {
  text-decoration: none;
  color: var(--muted);
  font-family: var(--font);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

header nav ul a:hover,
header nav ul a.active {
  color: var(--accent);
}

main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 1.25rem;
  font-family: var(--font);
  font-size: 0.8rem;
  color: var(--muted);
}

/* ── Landing: hero ── */
.hero {
  display: flex;
  flex-direction: column;
  margin-bottom: 3rem;
}

.hero-title {
  font-size: 2rem;
  margin-bottom: 1.25rem;
}

.hero-body {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.hero-photo-col {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}

.hero-photo {
  width: 200px;
  height: 240px;
  border-radius: 12px;
  object-fit: cover;
  border: 2px solid var(--border);
}

.hero-photo-placeholder {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: #e8e8e8;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
}

.hero-text h1 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.hero-text .tagline {
  font-family: var(--font);
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.hero-text p {
  font-size: 0.97rem;
  margin-bottom: 0.75rem;
}

.hero-links {
  display: flex;
  gap: 0.9rem;
}

.hero-links a {
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: color 0.15s;
  position: relative;
}

.hero-links a::after {
  content: attr(title);
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: #fff;
  font-family: var(--font);
  font-size: 0.7rem;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}

.hero-links a:hover::after {
  opacity: 1;
}

.hero-links a svg {
  width: 22px;
  height: 22px;
}

.hero-links a:hover { color: var(--accent); }

/* ── Section headings ── */
.section-heading {
  font-size: 1.1rem;
  font-family: var(--font);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
  margin-bottom: 1.25rem;
}

section { margin-bottom: 3rem; }

/* ── Updates ── */
.updates-list {
  list-style: none;
}

.updates-list li {
  display: flex;
  gap: 1.25rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: 0.93rem;
}

.update-date {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
  min-width: 90px;
  align-self: flex-start;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  box-shadow: 2px 2px 0 var(--border);
  transition: color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.updates-list li:hover .update-date {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 2px 2px 0 var(--accent);
}

/* ── Publications ── */
.section-intro { font-size: 0.97rem; margin-bottom: 1.75rem; }

.pub-list { display: flex; flex-direction: column; gap: 1.75rem; }

.pub-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.pub-gif {
  flex-shrink: 0;
  width: 140px;
  height: 100px;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #f5f5f5;
}

.pub-gif-placeholder {
  flex-shrink: 0;
  width: 140px;
  height: 100px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: 0.7rem;
  color: var(--muted);
  text-align: center;
}

.pub-info h3 {
  font-size: 0.97rem;
  margin-bottom: 0.25rem;
}

.pub-info h3 a {
  color: var(--text);
  text-decoration: none;
}

.pub-info h3 a:hover { color: var(--accent); text-decoration: underline; }

.pub-venue {
  font-family: var(--font);
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.pub-summary {
  font-size: 0.88rem;
  color: #333;
}

/* ── Skeleton pages ── */
.page-title {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  font-family: var(--font);
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.placeholder-block {
  background: #f8f8f8;
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 2.5rem;
  text-align: center;
  font-family: var(--font);
  font-size: 0.9rem;
  color: var(--muted);
}

/* ── Robot easter egg ── */
@keyframes robot-draw-in {
  0% { clip-path: inset(0 100% 0 0); opacity: 0; }
  12% { opacity: 1; }
  100% { clip-path: inset(0 0 0 0); opacity: 1; }
}

.robot-egg {
  display: none;
  position: fixed;
  left: calc(50% + (var(--max-w) / 2) + 32px);
  width: 190px;
  height: auto;
  filter: drop-shadow(3px 4px 6px rgba(0, 0, 0, 0.18));
  pointer-events: none;
  clip-path: inset(0 100% 0 0);
  opacity: 0;
  transform: translateY(-50%);
  transition: opacity 0.25s ease;
  z-index: 10;
}

.robot-egg.visible {
  animation: robot-draw-in 0.8s cubic-bezier(0.25, 0.7, 0.35, 1) forwards;
}

/* Only enable when there's enough margin to the side of the centered content */
@media (min-width: 1180px) {
  .robot-egg { display: block; }
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .hero { align-items: center; text-align: center; }
  .hero-body { flex-direction: column; }
  .hero-photo-col { width: 100%; }
  .pub-card { flex-direction: column; }
  .pub-gif, .pub-gif-placeholder { width: 100%; height: 160px; }
}