:root {
  color-scheme: light;
  --ink: #1c1915;
  --muted: #5e564c;
  --line: #e2d8c8;
  --paper: #f4f1ea;
  --card: #fffdf8;
  --teal: #0f5b54;
  --teal-dark: #0a3d39;
  --gap: #8a4b12;
  --gap-bg: #f8e7d2;
  --pending: #3f4d3a;
  --danger: #8d2d2d;
  font-family: "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", sans-serif;
}

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

body {
  margin: 0 auto;
  max-width: 880px;
  background: var(--paper);
  color: var(--ink);
  padding: 16px 16px 32px;
}

.top, .tabs, .history-bar, .stat-grid, .streak-list {
  display: flex;
  gap: 8px;
}

.top { align-items: center; justify-content: space-between; }

h1, h2, p { margin: 0; }

h1 { font-size: 1.6rem; letter-spacing: 0.02em; }
h2 { font-size: 1.05rem; margin-bottom: 8px; }

.eyebrow {
  margin: 0;
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

button, select {
  font: inherit;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 44px;
  padding: 0 14px;
}

button { cursor: pointer; }
button[aria-current="page"], #sync-button {
  background: var(--teal);
  color: white;
  border-color: var(--teal-dark);
}
button:disabled { opacity: 0.6; cursor: wait; }

.tabs { margin: 12px 0; }
.tabs button { flex: 1; }

.sync-line, .offline, .note, .source-link { color: var(--muted); font-size: 0.92rem; }
.sync-line { margin: 8px 0; }
.offline {
  margin: 0 0 12px;
  padding: 12px;
  border-radius: 12px;
  background: var(--gap-bg);
  color: var(--gap);
}

.card, .draw {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  margin-bottom: 12px;
}

.stat-grid, .streak-list { flex-wrap: wrap; }
.stat, .streak {
  flex: 1 1 140px;
  background: #f7f4ee;
  border-radius: 12px;
  padding: 10px;
}
.stat b, .streak b { display: block; font-size: 1.15rem; margin-top: 4px; }
.muted { color: var(--muted); }

.balls { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
.ball {
  min-width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #efe8dc;
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
}
.ball.super { background: var(--teal); color: white; }

.fields { display: grid; gap: 4px; }
.gap {
  background: var(--gap-bg);
  border-color: #efd3b4;
}
.gap strong { color: var(--gap); }
.pending { border-color: #c9d3c2; }
.warn { color: var(--danger); }
.history-bar { align-items: center; margin-bottom: 12px; }
.history-bar select { flex: 1; border-radius: 12px; }
.login input { width: 100%; margin: 8px 0 12px; border-radius: 12px; }
.login { margin-bottom: 12px; }

code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.9em;
}

#view-notes { display: grid; gap: 12px; }
#view-notes p + p { margin-top: 8px; }

@media (max-width: 640px) {
  body { padding-inline: 12px; }
  h1 { font-size: 1.35rem; }
  .stat, .streak { flex-basis: calc(50% - 8px); }
}