:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #1b2733;
  --muted: #5c6b7a;
  --accent: #1a5fb4;
  --accent-soft: #e3ecf8;
  --ok: #1c7c40;
  --ok-soft: #e2f3e8;
  --border: #dde4ec;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10161d;
    --card: #1a222c;
    --text: #e6edf4;
    --muted: #93a3b3;
    --accent: #62a0ea;
    --accent-soft: #1e2f44;
    --ok: #57d992;
    --ok-soft: #17301f;
    --border: #2b3644;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  max-width: 560px;
  padding: 16px 16px calc(24px + env(safe-area-inset-bottom));
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

header { text-align: center; margin: 12px 0 20px; }
h1 { margin: 0; font-size: 1.7rem; }
.subtitle { margin: 4px 0 0; color: var(--muted); font-size: 0.9rem; }
h2 { margin: 0 0 8px; font-size: 1.05rem; }

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

label { display: block; margin-bottom: 8px; }

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

button {
  font: inherit;
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button:disabled { opacity: 0.45; cursor: default; }
button.secondary { background: var(--accent-soft); color: var(--accent); }

.hint { color: var(--muted); font-size: 0.9rem; margin: 6px 0 10px; }
.hint.small { font-size: 0.8rem; margin: 8px 0 0; }
.hidden { display: none; }

.day { margin: 14px 0 4px; }
.day h3 {
  margin: 0 0 6px;
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 600;
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  display: inline-block;
  background: var(--ok-soft);
  color: var(--ok);
  border-radius: 8px;
  padding: 5px 9px;
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
  text-decoration: none;
}
.chip .cap { opacity: 0.75; font-size: 0.78rem; }

.chip.soon { outline: 2px solid var(--ok); }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 18px 8px;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 20px;
}
footer a { color: var(--accent); }