:root {
  --bg: #f5f6f4;
  --card: #ffffff;
  --text: #1c2321;
  --muted: #5f6b67;
  --border: #d8ddda;
  --accent: #1f6f5c;
  --accent-text: #ffffff;
  --danger: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121614;
    --card: #1c2220;
    --text: #e7ece9;
    --muted: #9aa7a2;
    --border: #2e3734;
    --accent: #4fb89a;
    --accent-text: #0d1a16;
    --danger: #f2b8b5;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
}

header {
  background: var(--accent);
  color: var(--accent-text);
  padding: calc(12px + env(safe-area-inset-top)) 16px 12px;
}
header h1 { margin: 0; font-size: 1.2rem; }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.help-btn {
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  background: transparent;
  color: var(--accent-text);
  font-size: 0.9rem;
  line-height: 1;
  opacity: 0.75;
}
.help-btn:hover, .help-btn:focus-visible { opacity: 1; }
.summary { font-size: 0.9rem; opacity: 0.9; margin-top: 4px; }

main { padding: 16px; max-width: 560px; margin: 0 auto; }

.tab { display: none; }
.tab.active { display: block; }

h2 { font-size: 1rem; margin: 20px 0 8px; }

label, .field { display: block; margin-bottom: 14px; font-weight: 600; font-size: 0.95rem; }
.field-label { display: block; margin-bottom: 6px; }

input[type="date"], input[type="number"], input[type="text"], select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 12px;
  font-size: 1.1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
}

.distance {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin: 4px 0 16px;
  color: var(--accent);
}

button, .file-btn {
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-block;
}
.primary { background: var(--accent); color: var(--accent-text); }
.secondary { background: var(--card); color: var(--text); border-color: var(--border); }
.actions { display: flex; gap: 8px; }
.actions .primary { flex: 1; }

.msg { min-height: 1.2em; font-size: 0.9rem; color: var(--muted); }
.msg.error { color: var(--danger); }
.hint { color: var(--muted); font-size: 0.9rem; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 4px; }
.chip {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 500;
}
.chip.selected { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }

.toolbar { display: flex; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar select { margin-top: 0; flex: 1; }

.month-totals { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 8px; margin-bottom: 16px; }
.month-totals div {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px;
  font-size: 0.85rem;
}
.month-totals strong { display: block; font-size: 1rem; }

.trip-list, .place-list { list-style: none; padding: 0; margin: 0; }
.trip-list li, .place-list li {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.trip-info { flex: 1; min-width: 0; }
.trip-info .km { font-weight: 700; }
.trip-info .meta { color: var(--muted); font-size: 0.85rem; overflow-wrap: anywhere; }
.place-list li span { flex: 1; }
.small { padding: 6px 10px; font-size: 0.85rem; }
.danger { color: var(--danger); background: transparent; border-color: var(--border); }

.inline-form { display: flex; gap: 8px; }
.inline-form input { margin-top: 0; flex: 1; }

.empty { color: var(--muted); text-align: center; }

.tabbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: flex;
  background: var(--card);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar button {
  flex: 1;
  background: none;
  border-radius: 0;
  color: var(--muted);
  padding: 16px 4px;
}
.tabbar button.active { color: var(--accent); }

.year-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 12px; }
.year-summary div {
  background: var(--card);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 8px;
  font-size: 0.8rem;
  color: var(--muted);
}
.year-summary strong { display: block; font-size: 1rem; color: var(--text); }

.guide details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 8px;
}
.guide-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.guide-head h2 { margin: 0; }
.guide summary { font-weight: 600; cursor: pointer; }
.guide ol, .guide ul { padding-left: 20px; margin: 10px 0 0; }
.guide li { margin-bottom: 6px; line-height: 1.4; }
.guide p { line-height: 1.4; }