.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
}

.dashboard-header {
  flex-shrink: 0;
  padding: 20px 24px;
  background-color: var(--green);
  border-bottom: 1px solid var(--green-hover);
}

.split-view {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.left-panel {
  width: 400px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background-color: var(--surface);
}

.right-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background-color: var(--bg);
  position: relative;
}

.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 900px) {
  .split-view {
    flex-direction: column;
  }
  
  .left-panel {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    /* In mobile, list is half height when detail is open, or full height */
    height: 50%;
  }
  
  .right-panel {
    height: 50%;
  }
}