:root {
  color-scheme: light;
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-border: #e2e0dc;
  --color-text: #262421;
  --color-text-muted: #6b6862;
  --color-primary: #2f6f4f;
  --color-primary-dark: #234f39;
  --color-danger: #b3402f;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  text-decoration: none;
}
.brand__tagline {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted);
}
.site-nav {
  display: flex;
  gap: 16px;
}
.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}
.site-nav a:hover {
  color: var(--color-primary-dark);
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

h1 { font-size: 1.5rem; margin: 0 0 16px; }
h2 { font-size: 1.15rem; margin: 24px 0 12px; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

label { display: block; font-size: 0.9rem; margin-bottom: 4px; color: var(--color-text-muted); }
input[type="text"], input[type="email"], input[type="password"], input[type="datetime-local"], textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 1rem;
  margin-bottom: 12px;
  font-family: inherit;
}
textarea { min-height: 100px; resize: vertical; }

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--color-primary-dark); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn--secondary { background: transparent; color: var(--color-primary); }
.btn--danger { background: var(--color-danger); border-color: var(--color-danger); }

.alert {
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.alert--error { background: #fbeceA; color: var(--color-danger); border: 1px solid #f0c9c2; }
.alert--info { background: #eaf3ee; color: var(--color-primary-dark); border: 1px solid #cfe4d8; }

table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }

.animal-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}
.animal-grid button {
  font-size: 1.6rem;
  padding: 10px 4px;
  border-radius: 8px;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
}
.animal-grid button.selected {
  border-color: var(--color-primary);
  background: #eaf3ee;
}
.animal-grid button span {
  display: block;
  font-size: 0.65rem;
  color: var(--color-text-muted);
}

.letter-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin-bottom: 12px;
}
.letter-grid button {
  padding: 8px 0;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
}
.letter-grid button.selected {
  border-color: var(--color-primary);
  background: #eaf3ee;
}

audio { width: 100%; margin-bottom: 12px; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  background: #eaf3ee;
  color: var(--color-primary-dark);
}
.badge--pending { background: #fbf3e6; color: #8a5a10; }