* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.5;
  color: #1f2933;
  background: #f3f5f7;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px;
}

h1 { font-size: 1.5rem; margin: 8px 0; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }

.note { font-size: 0.875rem; color: #52606d; margin: 0 0 16px; }

.card {
  background: #fff;
  border: 1px solid #d9e0e6;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}

.field { margin-bottom: 12px; }
.field label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 4px; }

input[type="text"] {
  width: 100%;
  min-height: 44px;
  padding: 8px 10px;
  font-size: 1rem;
  border: 1px solid #9aa5b1;
  border-radius: 6px;
}

input[type="text"]:disabled { background: #e4e7eb; }

.btn {
  min-height: 44px;
  min-width: 72px;
  padding: 8px 14px;
  font-size: 1rem;
  border: 1px solid #9aa5b1;
  border-radius: 6px;
  background: #fff;
  color: inherit;
  cursor: pointer;
}

.btn.primary { background: #0b69a3; border-color: #0b69a3; color: #fff; }
.btn.danger { color: #ba2525; border-color: #ba2525; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
/* プライマリーブルー(#0b69a3)は白に対して約5.6:1。背景色との間に白い隙間を設けて、青いボタン上でも枠が見えるようにする */
.btn:focus-visible, input:focus-visible { outline: 3px solid #0b69a3; outline-offset: 2px; box-shadow: 0 0 0 2px #fff; }

.message {
  margin-bottom: 16px;
  padding: 12px;
  border-radius: 6px;
  background: #ffe3e3;
  border: 1px solid #ba2525;
  color: #610404;
}

.empty { color: #52606d; margin: 0; }

.item-list { list-style: none; margin: 0; padding: 0; }

.item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 12px 0;
  border-top: 1px solid #e4e7eb;
}

.item:first-child { border-top: 0; }

.item-name { flex: 1 1 160px; min-width: 0; overflow-wrap: anywhere; font-weight: 600; }
.item-qty { flex: 0 0 auto; }
.item-actions { display: flex; gap: 8px; flex: 0 0 auto; }
.item-edit { display: flex; flex-wrap: wrap; gap: 8px; flex: 1 1 100%; }
.item-edit input { flex: 1 1 120px; width: auto; }

@media (max-width: 400px) {
  .item-actions { width: 100%; }
  .item-actions .btn { flex: 1; }
}