:root {
  --bg: #fafafa;
  --text: #1a1a1a;
  --muted: #666;
  --border: #ddd;
  --accent: #fc4c02;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --text: #e5e5e5;
    --muted: #888;
    --border: #333;
    --accent: #fc4c02;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 22px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  padding: 2rem;
  max-width: 1080px;
  margin: 0 auto;
}

h1 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.updated {
  color: var(--muted);
  font-size: 0.75rem;
  margin-bottom: 1rem;
}

/* Year stats header */
.year-stats {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
}

/* Stat block - label above values */
.stat-block {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.stat-block-label {
  font-size: 0.6rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-block-values {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  white-space: nowrap;
}

.stat-block-values .stat-value {
  font-size: 1rem;
  font-weight: 600;
}

.stat-block-values .stat-label {
  font-size: 0.7rem;
  margin-right: 0.5rem;
}

.type-stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.type-name {
  font-size: 0.6rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.type-stat-values {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  white-space: nowrap;
}

.type-stat .stat-value {
  font-size: 1rem;
  font-weight: 600;
}

.type-stat .stat-label {
  font-size: 0.7rem;
  margin-right: 0.5rem;
}

/* Month grid - 3 columns x 4 rows */
.months-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 600px) {
  .months-grid {
    grid-template-columns: 1fr;
  }
}

.month {
  min-width: 0;
}

.month-header {
  font-size: 0.7rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  font-variant-numeric: tabular-nums;
}

.calendar-header {
  font-size: 0.55rem;
  color: var(--muted);
  text-align: center;
  padding: 0.15rem 0;
}

.day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  border-radius: 2px;
  color: var(--muted);
  position: relative;
}

.day.empty {
  background: transparent;
}

.day.has-activity {
  background: var(--bg);
  color: var(--accent);
}

.day.has-activity svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

.day .badge {
  position: absolute;
  top: -3px;
  right: -3px;
  background: var(--text);
  color: var(--bg);
  font-size: 0.5rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

/* Custom tooltip */
.day.has-activity .tooltip {
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  font-size: 0.65rem;
  padding: 0.25rem 0.5rem;
  border-radius: 3px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.1s;
  z-index: 10;
}

.day.has-activity .tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--text);
}

.day.has-activity:hover .tooltip {
  opacity: 1;
}

/* Footer */
footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.year-links {
  margin-bottom: 1rem;
}

.year-links-label {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.year-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.85rem;
  margin-right: 1rem;
}

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

.year-links a.current {
  font-weight: 600;
}

.totals {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
}

.stat-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  color: var(--muted);
  margin-left: 0.25rem;
}