.day-column:nth-child(7n + 1) { background: rgba(254, 243, 199, 0.82); }
.day-column:nth-child(7n + 2) { background: rgba(224, 242, 254, 0.82); }
.day-column:nth-child(7n + 3) { background: rgba(236, 252, 203, 0.82); }
.day-column:nth-child(7n + 4) { background: rgba(252, 231, 243, 0.82); }
.day-column:nth-child(7n + 5) { background: rgba(237, 233, 254, 0.82); }
.day-column:nth-child(7n + 6) { background: rgba(240, 253, 244, 0.82); }
.day-column:nth-child(7n + 7) { background: rgba(255, 247, 237, 0.82); }

.app {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.title-wrap h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  line-height: 1.1;
}

.title-wrap p {
  margin: 0;
  color: var(--muted);
}

.topbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  align-items: start;
}

.day-column {
  background: rgba(255, 251, 245, 0.78);
  border: 1px solid rgba(120, 86, 52, 0.14);
  border-radius: 18px;
  min-height: 220px;
  box-shadow: 0 12px 24px rgba(80, 52, 28, 0.12);
  display: flex;
  flex-direction: column;
  align-self: start;
  overflow: visible;
  backdrop-filter: blur(2px);
}

.day-header {
  padding: 16px;
  border-bottom: 1px solid rgba(120, 86, 52, 0.1);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.day-content {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.empty-state {
  color: var(--muted);
  font-size: 0.94rem;
  border: 1px dashed rgba(120, 86, 52, 0.18);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  background: rgba(255, 255, 255, 0.72);
}

@media (max-width: 700px) {
  .app {
    padding: 16px;
  }

  .title-wrap h1 {
    font-size: 1.55rem;
  }
}