:root {
  --bg: #f4f2f8;
  --card: #ffffff;
  --text: #1d1b22;
  --muted: #6d6878;
  --border: #e3dfeb;
  --accent: #5b3f86;
  --danger: #c92a2a;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14121a;
    --card: #1e1b26;
    --text: #ece9f2;
    --muted: #9a94a8;
    --border: #2e2a38;
    --accent: #a98be0;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: env(safe-area-inset-top) 0 calc(24px + env(safe-area-inset-bottom));
}
main { max-width: 760px; margin: 0 auto; padding: 0 16px; }
h1 { font-size: 1.35rem; margin: 0; }
h2 { font-size: 1rem; margin: 0 0 12px; font-weight: 600; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.center { min-height: 80vh; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding: 16px; }

.topbar { display: flex; align-items: center; justify-content: space-between; padding: 16px 0 8px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin: 12px 0; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 12px; }
.row-between h2 { margin: 0; }

button, .button, select, input[type="datetime-local"] {
  font: inherit; color: inherit; border-radius: 10px; border: 1px solid var(--border);
  background: transparent; padding: 10px 14px; cursor: pointer;
}
select.small, button.small { padding: 6px 10px; font-size: 0.85rem; }
button.primary { background: var(--accent); color: #fff; border: none; padding: 12px 20px; }
button.ghost:hover, .button.ghost:hover { border-color: var(--accent); }
button.link { border: none; padding: 0 0 0 12px; color: var(--accent); font-weight: 600; background: none; }
input[type="datetime-local"] { width: 100%; margin-top: 8px; cursor: text; }

.log-buttons { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }
.log-btn {
  border: none; color: #fff; font-weight: 600; padding: 18px 12px; border-radius: 12px;
  font-size: 1rem; transition: transform .08s ease, filter .15s;
}
.log-btn:active { transform: scale(0.97); }
.log-btn:hover { filter: brightness(1.08); }
.log-btn:disabled { opacity: .6; }
.backdate { margin-top: 12px; }
.backdate summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.stat { border: 1px solid var(--border); border-radius: 12px; padding: 12px; border-left: 4px solid var(--c); }
.stat .label { font-size: 0.85rem; color: var(--muted); }
.stat .big { font-size: 1.8rem; font-weight: 700; line-height: 1.1; margin: 2px 0 6px; }
.stat dl { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; margin: 0; font-size: 0.85rem; }
.stat dt { color: var(--muted); }
.stat dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

.chart-box { position: relative; height: 260px; }
.chart-box.pie { height: 240px; }

.entries { list-style: none; margin: 0; padding: 0; }
.entries li { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.entries li:last-child { border-bottom: none; }
.entries .dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.entries .when { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-variant-numeric: tabular-nums; font-size: 0.9rem; }
.entries select { padding: 4px 6px; font-size: 0.8rem; max-width: 46%; }
.entries .del { border: none; color: var(--danger); padding: 4px 8px; font-size: 1.1rem; }
#btn-more { width: 100%; margin-top: 8px; }

.tools { display: flex; gap: 10px; flex-wrap: wrap; }
code { font-size: 0.85em; }

.toast {
  position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 12px 16px; border-radius: 12px;
  display: flex; align-items: center; box-shadow: 0 6px 24px rgba(0,0,0,.25); z-index: 10; max-width: calc(100% - 32px);
}
.toast .link { color: var(--bg); text-decoration: underline; }