:root {
  --feed: #2e7d32;
  --sleep: #1565c0;
  --diaper: #ef6c00;
  --reset: #c62828;
  --border: #ddd;
  --bg: #fafafa;
}

* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  background: var(--bg);
  color: #222;
}

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

h1 {
  text-align: center;
  margin-top: 0.5rem;
}

.actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.action {
  flex: 1 1 0;
  text-align: center;
}

.log-btn {
  width: 100%;
  padding: 1.25rem 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}

.log-btn:active {
  transform: translateY(1px);
}

.log-btn.feed {
  background: var(--feed);
}

.log-btn.sleep {
  background: var(--sleep);
}

.log-btn.diaper {
  background: var(--diaper);
}

.elapsed {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: #555;
}

.elapsed-value {
  font-weight: 600;
  color: #222;
}

.log-section {
  margin-top: 2.5rem;
}

.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.reset-btn {
  background: var(--reset);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  cursor: pointer;
}

.export-btn {
  background: #6d28d9;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  cursor: pointer;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
  background: #fff;
}

th,
td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

th {
  background: #f0f0f0;
}

td.empty {
  text-align: center;
  color: #888;
  font-style: italic;
}

.cat-feed {
  color: var(--feed);
  font-weight: 600;
}

.cat-sleep {
  color: var(--sleep);
  font-weight: 600;
}

.cat-diaper {
  color: var(--diaper);
  font-weight: 600;
}