:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --border: #30363d;
  --ready: #6e7681;
  --claimed: #2f81f7;
  --running: #d29922;
  --done: #238636;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

.controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

#board-selector {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  cursor: pointer;
  min-width: 200px;
}

#board-selector:focus {
  outline: 2px solid var(--claimed);
  outline-offset: 2px;
}

.last-updated {
  color: var(--text-secondary);
  font-size: 0.875rem;
  white-space: nowrap;
}

.board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.status-column {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 1rem;
  border: 1px solid var(--border);
}

.status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.status-header h2 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-badge.ready {
  background: var(--ready);
  color: var(--text-primary);
}

.status-badge.claimed {
  background: var(--claimed);
  color: var(--text-primary);
}

.status-badge.running {
  background: var(--running);
  color: var(--bg-primary);
}

.status-badge.done {
  background: var(--done);
  color: var(--text-primary);
}

.task-count {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 200px;
}

.task-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
  transition: border-color 0.2s;
}

.task-card:hover {
  border-color: var(--text-secondary);
}

.task-card .task-id {
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.task-card .task-title {
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
}

.task-card .task-assignee {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.task-card .task-assignee::before {
  content: '●';
  font-size: 0.625rem;
}

.error-message {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(210, 153, 22, 0.1);
  border: 1px solid var(--running);
  border-radius: 6px;
  color: var(--running);
  font-size: 0.875rem;
  text-align: center;
}

/* Empty state */
.task-list:empty::after {
  content: 'No tasks';
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-align: center;
  padding: 2rem 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .board {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .board {
    grid-template-columns: 1fr;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .controls {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }

  #board-selector {
    width: 100%;
  }
}