:root {
  --paper: #fbf8f1;
  --line: #d9e3f0;
  --margin: #e8a0a0;
  --graphite: #3a3a3a;
  --faint: #8a8a8a;
  --accent: #2f5d8a;
  --card: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1e1f22;
    --line: #2c3340;
    --margin: #7a3d3d;
    --graphite: #e4e2dc;
    --faint: #8f8f8f;
    --accent: #8ab4e0;
    --card: #26282c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--graphite);
  font-family: "Segoe Print", "Bradley Hand", "Comic Sans MS", cursive;
}

.pad {
  max-width: 560px;
  margin: 0 auto;
  padding: 48px 16px;
  background-image: repeating-linear-gradient(
    to bottom, transparent 0, transparent 39px, var(--line) 39px, var(--line) 40px
  );
  border-left: 2px solid var(--margin);
  min-height: 100vh;
}

h1 { margin: 0; font-size: 2.4rem; letter-spacing: 0.02em; }
.tagline { margin: 4px 0 28px; color: var(--faint); }

form { display: flex; gap: 8px; margin-bottom: 20px; }

input[type="text"] {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  font: inherit;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
}
input[type="text"]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

button {
  font: inherit;
  cursor: pointer;
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: var(--paper);
}

button.link {
  background: none;
  color: var(--accent);
  padding: 4px;
  text-decoration: underline;
}

ul { list-style: none; margin: 0; padding: 0; }

li {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
}

li label { flex: 1; cursor: pointer; overflow-wrap: anywhere; }
li input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }
li.done label { text-decoration: line-through; color: var(--faint); }

li .remove {
  background: none;
  color: var(--faint);
  padding: 4px 8px;
  font-size: 1.2rem;
  line-height: 1;
}
li .remove:hover { color: var(--margin); }

.empty { color: var(--faint); font-style: italic; }
.empty[hidden] { display: none; }

footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
  color: var(--faint);
  font-size: 0.9rem;
}