:root {
  --paper-bg: #fffff8; /* Cream paper */
  --text-dark: #111111;
  --text-muted: #555555;
  --border-hairline: #333333;
  
  --font-serif: 'Lora', serif;
  --font-mono: 'Share Tech Mono', monospace;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--paper-bg);
  color: var(--text-dark);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.academic-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 30px;
}

.academic-header {
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 25px;
  margin-bottom: 30px;
}

.nav-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.nav-link {
  color: var(--text-dark);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.nav-link:hover {
  border-bottom: 1px solid var(--text-dark);
}

.pub-number {
  color: var(--text-muted);
}

.academic-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin: 0 0 10px 0;
  letter-spacing: -0.5px;
}

.author-info {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin: 0;
}

/* Controls */
.layout-panel {
  margin-bottom: 30px;
}

.tufte-btn {
  background: transparent;
  border: 1px solid var(--border-hairline);
  color: var(--text-dark);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 12px;
  cursor: pointer;
}

.tufte-btn:hover {
  background: var(--text-dark);
  color: var(--paper-bg);
}

/* Article Layout with Sidenotes column */
.academic-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

/* Sidenotes default (desktop) */
@media (min-width: 768px) {
  .academic-content.has-sidenotes {
    grid-template-columns: 1fr 220px;
  }
}

.text-body {
  max-width: 580px;
}

.text-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 30px;
}

.text-body p {
  position: relative;
}

/* Sidenotes styling */
.sidenote {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 10px;
  border-left: 2px solid var(--border-hairline);
  padding-left: 10px;
}

@media (min-width: 768px) {
  .has-sidenotes .sidenote {
    position: absolute;
    right: -250px;
    top: 0;
    width: 200px;
    margin-top: 0;
    border-left: 1.5px solid var(--border-hairline);
    padding-left: 10px;
    z-index: 10;
  }
}

/* Minimalist Data Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 25px 0;
  font-size: 0.85rem;
}

.data-table th, .data-table td {
  padding: 8px;
  text-align: left;
}

.data-table th {
  border-bottom: 1.5px solid var(--border-hairline);
  font-weight: 700;
}

.data-table td {
  border-bottom: 1px solid #e1e1e1;
}

.academic-footer {
  margin-top: 60px;
  border-top: 1px solid var(--border-hairline);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}