:root {
  --bg-color: #f3f4f6; /* Concrete/Parchment Gray */
  --card-bg: #ffffff;
  --text-primary: #1c1917; /* Near black (stone-900) */
  --text-secondary: #000000;
  --border-color: #000000;
  --accent-rust: #c2410c; /* Burnt Orange from the large gear */
  --accent-yellow: #eab308; /* Mustard Yellow from the small robots */
  --accent-pink: #db2777; /* Pink accents from the robot details */
  --win-color: #000000;
  --loss-color: #c2410c;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  background-image: radial-gradient(#d1d5db 1px, transparent 1px); /* Subtle texture */
  background-size: 20px 20px;
  color: var(--text-primary);
  margin: 0;
  padding: 2rem;
  line-height: 1.5;
}

.container {
  max-width: 950px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 3.5rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.05em;
  color: var(--accent-rust);
  text-transform: uppercase;
  font-weight: 800;
  border-bottom: 2px solid var(--accent-rust);
  display: inline-block;
  padding: 0 1rem;
}

/* Summary Dashboard */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: var(--card-bg);
  padding: 1.25rem;
  border-radius: 0;
  text-align: center;
  border: 1px solid var(--border-color);
}

.stat-value {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
  color: var(--accent-rust);
}

.stat-label {
  color: var(--text-primary);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
}

/* Table Design */
.matrix-container {
  background-color: var(--card-bg);
  border-radius: 0;
  border: 1px solid var(--border-color);
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #ffffff;
  background-color: var(--border-color);
  font-weight: 800;
  padding: 0.75rem 1.5rem;
  margin: 0;
  text-align: center;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: #f8fafc;
  padding: 1rem 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

th.idx-col {
  width: 40px;
  text-align: center;
  padding-left: 1rem;
}

th.ext-col {
  text-align: center;
}

th.ext-col span {
  display: inline-block;
  vertical-align: middle;
}

td {
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
}

td.idx-cell {
  width: 40px;
  text-align: center;
  font-family: monospace;
  padding-left: 1rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

td.date-cell {
  font-family: monospace;
  white-space: nowrap;
  padding-left: 1.5rem;
}

/* Marker Cells */
td.heatmap-cell {
  width: 50px;
  padding: 0;
  border-left: 1px solid var(--border-color);
  text-align: center;
}

.heat-box {
  width: 100%;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Row Status Styling */
.row-unbeaten {
  background-color: #d1d5db;
}

.row-unbeaten td {
  color: #000000 !important;
}

.row-beaten {
  background-color: #ffffff;
}

tr:last-child td {
  border-bottom: none;
}

.status-text {
  font-size: 1.25rem;
}