:root {
  --color-bg: #f7f5f0;
  --color-header-bg: #3f5c42;
  --color-header-fg: #fdfaf3;
  --color-card-bg: #ffffff;
  --color-text: #2b3a2d;
  --color-text-muted: #7a7568;
  --color-accent: #c9a468;
  --color-accent-fg: #3a2f14;
  --color-chip-notstarted-bg: #e7e4db;
  --color-chip-notstarted-fg: #7a7568;
  --color-chip-progress-bg: #f1e3c6;
  --color-chip-progress-fg: #8a6a1f;
  --color-chip-trigger-bg: #f6dcda;
  --color-chip-trigger-fg: #a13d38;
  --color-chip-tolerated-bg: #dcebde;
  --color-chip-tolerated-fg: #3a6b41;
  --color-border: rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1b2420;
    --color-header-bg: #25332a;
    --color-header-fg: #fdfaf3;
    --color-card-bg: #253029;
    --color-text: #e8e6df;
    --color-text-muted: #a3a394;
    --color-accent: #d4b483;
    --color-accent-fg: #2b2311;
    --color-chip-notstarted-bg: #33392f;
    --color-chip-notstarted-fg: #a3a394;
    --color-chip-progress-bg: #4a3f24;
    --color-chip-progress-fg: #e0c17f;
    --color-chip-trigger-bg: #4a2b28;
    --color-chip-trigger-fg: #e8918a;
    --color-chip-tolerated-bg: #28382b;
    --color-chip-tolerated-fg: #8fc797;
    --color-border: rgba(255, 255, 255, 0.06);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  padding-bottom: 4.5rem;
}

.app-header {
  background: var(--color-header-bg);
  color: var(--color-header-fg);
  padding: 1.25rem 1rem 1.5rem;
}
.app-header h1 { margin: 0 0 0.2rem; font-size: 1.25rem; }
.app-subtitle { margin: 0; font-size: 0.8rem; opacity: 0.8; }

#app { max-width: 480px; margin: 0 auto; padding: 0 0.75rem; }

.group-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  font-weight: 600;
  padding: 1rem 0.25rem 0.4rem;
}

.challenge-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-card-bg);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  margin-bottom: 0.6rem;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.challenge-name { font-size: 0.9rem; font-weight: 600; }
.challenge-sub { font-size: 0.7rem; color: var(--color-text-muted); margin-top: 0.1rem; }

.chip { font-size: 0.65rem; font-weight: 700; padding: 0.3rem 0.65rem; border-radius: 999px; white-space: nowrap; }
.chip.status-not-started { background: var(--color-chip-notstarted-bg); color: var(--color-chip-notstarted-fg); }
.chip.status-in-progress,
.chip.status-retry-in-progress { background: var(--color-chip-progress-bg); color: var(--color-chip-progress-fg); }
.chip.status-trigger,
.chip.status-retried-still-reacts { background: var(--color-chip-trigger-bg); color: var(--color-chip-trigger-fg); }
.chip.status-tolerated,
.chip.status-retried-tolerated { background: var(--color-chip-tolerated-bg); color: var(--color-chip-tolerated-fg); }

.back-link { display: inline-block; font-size: 0.75rem; color: var(--color-text-muted); text-decoration: none; margin: 1rem 0 0.5rem; }

.food-option-picker { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.food-option-btn {
  flex: 1 1 auto;
  min-width: 5rem;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.6rem 0.4rem;
  border-radius: 9px;
  background: var(--color-chip-notstarted-bg);
  color: var(--color-chip-notstarted-fg);
  border: none;
  cursor: pointer;
}

.day-card { border-radius: 14px; margin-bottom: 0.7rem; padding: 0.8rem 0.9rem; background: var(--color-card-bg); }
.day-card.locked { opacity: 0.45; }
.day-card-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 0.5rem; }
.day-title { font-size: 0.85rem; font-weight: 700; }
.day-qty { font-size: 0.75rem; color: var(--color-text-muted); }

.severity-picker { display: flex; gap: 0.35rem; margin-bottom: 0.5rem; }
.severity-btn {
  flex: 1;
  text-align: center;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.5rem 0.2rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  background: var(--color-chip-notstarted-bg);
  color: var(--color-chip-notstarted-fg);
}
.severity-btn.selected.severity-none { background: var(--color-chip-tolerated-bg); color: var(--color-chip-tolerated-fg); }
.severity-btn.selected.severity-mild,
.severity-btn.selected.severity-moderate,
.severity-btn.selected.severity-severe { background: var(--color-chip-trigger-bg); color: var(--color-chip-trigger-fg); }

.notes-input {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: inherit;
  font-size: 0.8rem;
  padding: 0.5rem 0.6rem;
  font-family: inherit;
  margin-bottom: 0.4rem;
}

.retry-btn, .action-btn {
  display: block;
  width: 100%;
  text-align: center;
  margin-top: 0.5rem;
  background: var(--color-accent);
  color: var(--color-accent-fg);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.7rem;
  border-radius: 10px;
  border: none;
  cursor: pointer;
}

.stopped-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  background: var(--color-chip-trigger-bg);
  color: var(--color-chip-trigger-fg);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  margin-top: 0.35rem;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-around;
  padding: 0.7rem 0;
  background: var(--color-card-bg);
  border-top: 1px solid var(--color-border);
}
.bottom-nav a { font-size: 0.65rem; font-weight: 600; text-decoration: none; color: var(--color-text-muted); }
.bottom-nav a.active { color: var(--color-accent); }

.reference-group { margin-bottom: 1.5rem; }
.reference-group h3 { font-size: 0.95rem; margin-bottom: 0.4rem; }
.reference-list { font-size: 0.8rem; color: var(--color-text-muted); margin: 0 0 0.5rem; }
.reference-note { font-size: 0.75rem; font-style: italic; color: var(--color-text-muted); }

.tip-card { background: var(--color-card-bg); border-radius: 12px; padding: 0.8rem 0.9rem; margin-bottom: 0.6rem; }
.tip-card h3 { font-size: 0.85rem; margin: 0 0 0.3rem; }
.tip-card p { font-size: 0.78rem; color: var(--color-text-muted); margin: 0; }

.export-output {
  white-space: pre-wrap;
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
  background: var(--color-card-bg);
  border-radius: 12px;
  padding: 0.8rem;
  margin-top: 1rem;
}

.install-hint {
  background: var(--color-chip-progress-bg);
  color: var(--color-chip-progress-fg);
  border-radius: 10px;
  padding: 0.6rem 0.8rem;
  font-size: 0.75rem;
  margin: 0.75rem 0;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  align-items: center;
}
.install-hint button { border: none; background: transparent; color: inherit; font-weight: 700; cursor: pointer; font-size: 0.85rem; }