body {
  background: #181a1b;
  color: #e0e0e0;
  font-family: sans-serif;
  margin: 0;
  display: flex;
  height: 100vh;
}
#app {
  display: flex;
  width: 100vw;
  height: 100vh;
}
#sidebar {
  width: 250px;
  background: #23272a;
  padding: 1em;
  box-sizing: border-box;
}
#kanban-board {
  flex: 1;
  display: flex;
  gap: 1em;
  padding: 1em;
  overflow-x: auto;
}
.kanban-column {
  background: #222;
  border-radius: 8px;
  padding: 1em;
  min-width: 300px;
  max-width: 350px;
  flex: 0 0 320px;
  display: flex;
  flex-direction: column;
  gap: 1em;
}
.kanban-card {
  background: #2c2f33;
  border-radius: 6px;
  padding: 0.5em;
  margin-bottom: 1em;
  box-shadow: 0 2px 8px #0004;
}
.hidden { display: none; }