:root {
  color-scheme: light;
  --ink: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --paper: #f7f5f2;
  --card: #fff;
  --accent: #1d4e89;
  --danger: #9f1239;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.45 "Iowan Old Style", Palatino, Georgia, serif;
  color: var(--ink);
  background: var(--paper);
}

.top, main { max-width: 40rem; margin: 0 auto; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.25rem 0;
}

.brand {
  color: inherit;
  font-weight: 700;
  text-decoration: none;
}

.session {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.who { color: var(--muted); font-size: 0.9rem; }

main { padding: 1.25rem; }

h1 { font-size: 1.8rem; margin: 0 0 1rem; }
h2 { font-size: 1.05rem; margin: 0 0 0.75rem; }

.card, .task {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.card { padding: 1rem; margin-bottom: 1.5rem; }

.stack { display: flex; flex-direction: column; gap: 0.4rem; }

label { font-size: 0.85rem; color: var(--muted); }

input, textarea {
  width: 100%;
  font: inherit;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

button {
  font: inherit;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.actions { display: flex; gap: 0.4rem; }
.actions form:last-child button,
.task.done button {
  background: #fff;
  color: var(--danger);
  border-color: #fecdd3;
}

.tasks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }

.task {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.8rem 1rem;
}

.title { margin: 0; }
.notes, .due, .empty { margin: 0.2rem 0 0; color: var(--muted); font-size: 0.92rem; }
.task.done .title { text-decoration: line-through; color: var(--muted); }

.error { margin: 0; color: var(--danger); }

button:focus-visible, input:focus-visible, textarea:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

section { margin-bottom: 1.5rem; }