:root {
  color-scheme: light;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #595959;
  --border: #cccccc;
  --danger: #b00020;
  --accent: #0b5fff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.composer {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

label {
  font-weight: 600;
}

textarea {
  width: 100%;
  font: inherit;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  resize: vertical;
}

.composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

#counter {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

#counter.over {
  color: var(--danger);
  font-weight: 600;
}

#add {
  padding: 0.5rem 1.25rem;
  border: none;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  cursor: pointer;
}

#add:disabled {
  background: var(--border);
  color: var(--muted);
  cursor: not-allowed;
}

#status {
  min-height: 1.25rem;
  color: var(--danger);
  margin-bottom: 1rem;
}

#list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

#list li {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.75rem;
}

#list li.empty {
  border-style: dashed;
  color: var(--muted);
  text-align: center;
}

.note-text {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0 0 0.5rem;
}

#list time {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.del {
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 4px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  color: var(--danger);
  font: inherit;
}

@media (max-width: 480px) {
  main {
    padding: 1rem 0.75rem 2rem;
  }
}