:root { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial; }
body { margin: 0; background: #0b1220; color: #e9eefc; }
.container { max-width: 720px; margin: 40px auto; padding: 0 16px; }
h1 { margin: 0 0 16px; font-size: 28px; }
.card { background: #111a2e; border: 1px solid #1c2a4a; border-radius: 14px; padding: 16px; }
label { display: block; margin-top: 10px; font-size: 14px; opacity: .9; }
input {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  border: 1px solid #233357; background: #0b1220; color: #e9eefc;
  margin-top: 6px;
}
.row { display: flex; gap: 10px; margin-top: 12px; }
.between { justify-content: space-between; align-items: center; }
button {
  padding: 10px 12px; border-radius: 10px; border: 0; cursor: pointer;
  background: #3b82f6; color: #fff; font-weight: 600;
}
button.secondary { background: #223357; }
.hidden { display: none; }
.msg { margin-top: 10px; color: #ffcc66; min-height: 18px; }
.list { list-style: none; padding: 0; margin: 12px 0 0; }
.list li {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 10px; border: 1px solid #1c2a4a; border-radius: 12px;
  margin-top: 10px; background: #0b1220;
}
.list .left { display: flex; align-items: center; gap: 10px; }
.list .done { text-decoration: line-through; opacity: .7; }
.iconbtn { background: transparent; border: 1px solid #223357; padding: 8px 10px; }