:root {
  --bg: #f6f5f1;
  --card: #ffffff;
  --ink: #1d2428;
  --muted: #5c676d;
  --line: #d9d6cc;
  --accent: #1f5f5b;
  --accent-ink: #ffffff;
  --ok-bg: #e2f1e5;
  --bad-bg: #f8e0dc;
  --tag-bg: #e9e6da;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181a;
    --card: #1e2427;
    --ink: #e8ecee;
    --muted: #9aa6ab;
    --line: #333c40;
    --accent: #5fb3ac;
    --accent-ink: #0d1415;
    --ok-bg: #1b3524;
    --bad-bg: #44231f;
    --tag-bg: #2c3539;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow-wrap: anywhere;
}

main { max-width: 640px; margin: 0 auto; padding: 8px 16px 64px; }

h1 { font-size: 1.6rem; margin: 16px 0 4px; }
h2 { font-size: 1.2rem; margin: 28px 0 8px; }
h3 { font-size: 1rem; margin: 16px 0 6px; color: var(--muted); }
section > h2:first-child, .card > h2:first-child { margin-top: 4px; }

a { color: var(--accent); }

.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2; }
.top nav { max-width: 640px; margin: 0 auto; display: flex; flex-wrap: wrap; align-items: center; }
.top nav a, .top nav button {
  min-height: 48px; display: inline-flex; align-items: center; padding: 0 14px;
  color: var(--ink); text-decoration: none; font-weight: 600;
}
.top form { margin-left: auto; display: flex; flex-wrap: wrap; align-items: center; }
.top .me { padding: 0 14px; color: var(--muted); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px; margin: 10px 0; }

label { display: block; font-size: 0.9rem; color: var(--muted); margin: 10px 0 0; }
input, select, textarea {
  display: block; width: 100%; min-height: 48px; margin-top: 4px; padding: 10px 12px;
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px;
}
textarea { min-height: 96px; }

button, .btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 18px; margin: 10px 8px 0 0;
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 8px;
}
.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.link { border: 0; background: none; margin: 0; }

.actions { display: flex; flex-wrap: wrap; }

.row {
  display: block; padding: 12px 14px; margin: 8px 0; text-decoration: none;
  color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 10px;
}
.row strong { display: block; font-size: 1.05rem; }
.row .meta, .meta, .hint, small { color: var(--muted); font-size: 0.88rem; }
.row .meta, .row .next { display: block; }
.row .next { font-size: 0.92rem; margin-top: 2px; }
.tags { float: right; max-width: 55%; text-align: right; }

.tag { display: inline-block; background: var(--tag-bg); border-radius: 12px; padding: 2px 10px; margin-left: 4px; font-size: 0.8rem; }

.notice { padding: 12px 14px; border-radius: 8px; margin: 12px 0; }
.ok { background: var(--ok-bg); }
.bad { background: var(--bad-bg); }

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

.plain { list-style: none; margin: 0; padding: 0; }
.plain li { display: flex; flex-wrap: wrap; gap: 4px 12px; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--line); }
.plain li > span { flex: 1 1 60%; }

dl { margin: 8px 0 0; }
dt { color: var(--muted); font-size: 0.85rem; margin-top: 8px; }
dd { margin: 0; }

details { margin: 8px 0; }
summary { min-height: 48px; display: flex; align-items: center; font-weight: 600; cursor: pointer; }
.count { margin-left: 8px; color: var(--muted); font-weight: 400; }

.msg { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; margin: 8px 0; }
.msg > small::before { content: ""; display: inline-block; width: 8px; height: 8px; margin-right: 6px; border-radius: 50%; background: var(--accent); }
.msg.in > small::before { background: #c58a1a; }
.msg p { margin: 4px 0; }
.msg .note { color: var(--muted); font-style: italic; }