:root {
  color-scheme: light;
  --ink: #181818;
  --muted: #6b6b68;
  --line: #deded9;
  --line-strong: #c8c8c2;
  --paper: #f3f3f0;
  --panel: #fbfbf9;
  --white: #fff;
  --danger: #873b34;
  font-family: Inter, "Noto Sans JP", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html[lang="en"] [data-lang="ja"], html[lang="ja"] [data-lang="en"] { display: none !important; }
body { min-width: 320px; margin: 0; background: var(--paper); color: var(--ink); font-size: 14px; }
button, input, select, textarea { font: inherit; }
.skip { position: fixed; z-index: 10; top: .5rem; left: .5rem; padding: .5rem .8rem; color: #fff; background: #111; transform: translateY(-150%); }
.skip:focus { transform: none; }

.site-head {
  height: 56px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(24px, calc((100vw - 1180px) / 2));
  background: rgba(251, 251, 249, .96);
  position: sticky;
  top: 0;
  z-index: 3;
}
.brand { color: inherit; text-decoration: none; font: 700 13px/1 ui-monospace, SFMono-Regular, monospace; letter-spacing: .15em; }
.head-actions { display: flex; align-items: center; gap: 8px; }
.privacy-chip { border: 1px solid var(--line); border-radius: 6px; padding: 6px 9px; color: var(--muted); font-size: 11px; }
.lang-toggle { min-height: 28px; border: 1px solid var(--line-strong); border-radius: 6px; padding: 6px 9px; background: var(--white); color: var(--ink); font-size: 11px; font-weight: 650; line-height: 1; cursor: pointer; }
.lang-toggle:hover { border-color: #8c8c87; background: #f5f5f2; }
.lang-toggle:focus-visible { outline: 2px solid #777; outline-offset: 2px; }

.shell {
  width: min(1180px, calc(100% - 40px));
  margin: auto;
  padding: 28px 0 64px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, .75fr);
  gap: 16px;
}
.hero, .summary, .inventory, .guide, .data-tools { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; }
.hero { min-height: 228px; padding: 28px; display: flex; flex-direction: column; }
.eyebrow { margin: 0 0 12px; color: var(--muted); font: 600 10px/1 ui-monospace, SFMono-Regular, monospace; letter-spacing: .15em; text-transform: uppercase; }
.hero h1 { max-width: 620px; margin: 0 0 12px; font-size: clamp(24px, 3vw, 34px); line-height: 1.25; letter-spacing: -.035em; }
.hero h1 br { display: none; }
.lead { max-width: 650px; margin: 0; color: #50504d; font-size: 13px; line-height: 1.75; }
.actions { display: flex; gap: 8px; margin: auto 0 0; padding-top: 22px; }

.button { appearance: none; min-height: 36px; border: 1px solid var(--line-strong); background: var(--white); color: var(--ink); border-radius: 6px; padding: 9px 13px; font-size: 12px; font-weight: 650; line-height: 1; cursor: pointer; text-decoration: none; }
.button:hover { border-color: #8c8c87; background: #f5f5f2; }
.button.primary { border-color: #191919; background: #191919; color: #fff; }
.button.primary:hover { background: #363636; }
.button.compact { min-height: 32px; padding: 7px 11px; }
.button.danger { color: var(--danger); border-color: #cfb7b3; }
.button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid #777; outline-offset: 2px; }

.summary { display: grid; grid-template-rows: repeat(3, 1fr); overflow: hidden; }
.summary article { min-height: 0; padding: 18px 20px; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 1fr) auto; align-content: center; gap: 4px 16px; }
.summary article:last-child { border: 0; }
.summary span { align-self: end; color: var(--muted); font: 500 10px ui-monospace, monospace; letter-spacing: .04em; }
.summary strong { grid-row: 1 / 3; grid-column: 2; align-self: center; font-size: 28px; font-weight: 550; letter-spacing: -.05em; font-variant-numeric: tabular-nums; }
.summary small { color: var(--muted); font-size: 11px; }

.inventory { grid-column: 1 / -1; padding: 22px; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 16px; }
.section-head h2, .data-tools h2 { margin: 0; font-size: 18px; letter-spacing: -.02em; }
.controls { display: grid; grid-template-columns: minmax(220px, 1fr) 180px 180px; gap: 10px; padding: 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--white); }
label span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 10px; font-weight: 600; }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 5px; background: var(--white); color: inherit; padding: 9px 10px; font-size: 12px; }
textarea { min-height: 90px; resize: vertical; }
.result-summary { min-height: 18px; margin: 12px 0 4px; color: var(--muted); font-size: 11px; }
.food-list { border-top: 1px solid var(--line); }
.food-row { display: grid; grid-template-columns: minmax(0, 1fr) 140px auto; gap: 18px; align-items: center; min-height: 68px; padding: 12px 4px; border-bottom: 1px solid var(--line); }
.food-main { min-width: 0; }
.food-main h3 { margin: 0 0 4px; font-size: 13px; }
.food-main p { margin: 0; color: var(--muted); font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.expiry { text-align: right; }
.expiry strong, .expiry span { display: block; }
.expiry strong { font-size: 12px; font-variant-numeric: tabular-nums; }
.expiry span { margin-top: 3px; color: var(--muted); font-size: 10px; }
.expiry.expired strong { color: var(--danger); }
.expiry.soon strong { color: #705b25; }
.row-actions { display: flex; gap: 5px; }
.icon-button { min-height: 30px; border: 1px solid var(--line); border-radius: 5px; background: var(--white); padding: 7px 9px; font-size: 11px; cursor: pointer; }
.icon-button:hover { border-color: #888; }
.empty { padding: 44px 16px; text-align: center; color: var(--muted); font-size: 12px; border-bottom: 1px solid var(--line); }

.guide { grid-column: 1; display: grid; grid-template-columns: 120px 1fr; gap: 22px; padding: 20px 22px; font-size: 11px; line-height: 1.7; }
.guide p { margin: 0; color: var(--muted); }
.data-tools { grid-column: 2; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 22px; }
.data-tools p { margin: 6px 0 0; color: var(--muted); font-size: 11px; }
.tool-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.file-button input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }

dialog { width: min(620px, calc(100% - 24px)); max-height: calc(100vh - 24px); padding: 0; color: var(--ink); background: var(--panel); border: 1px solid var(--line-strong); border-radius: 8px; }
dialog::backdrop { background: rgba(0, 0, 0, .45); }
dialog header, dialog footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
dialog header h2 { margin: 0; font-size: 18px; }
dialog footer { justify-content: flex-end; border-top: 1px solid var(--line); border-bottom: 0; }
.close { border: 0; background: none; font-size: 24px; color: var(--muted); cursor: pointer; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 18px; }
.form-grid label { font-size: 11px; font-weight: 650; }
.form-grid label.full { grid-column: 1 / -1; }
.form-grid input, .form-grid select, .form-grid textarea { margin-top: 7px; }
.form-error { min-height: 18px; margin: 0; padding: 0 18px; color: var(--danger); font-size: 11px; }
.toast { position: fixed; right: 18px; bottom: 18px; padding: 10px 13px; color: #fff; background: #191919; border-radius: 5px; font-size: 11px; opacity: 0; transform: translateY(10px); transition: .2s; pointer-events: none; }
.toast.show { opacity: 1; transform: none; }
.site-foot { border-top: 1px solid var(--line); padding: 18px max(24px, calc((100vw - 1180px) / 2)); display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); }
.site-foot a { color: inherit; }
.privacy-page { display: block; }
.privacy-page > .eyebrow { margin-top: 4px; }
.privacy-page > h1 { margin: 0 0 20px; }
.privacy-page > .guide { margin-bottom: 12px; }
.privacy-page > .button { display: inline-block; margin-top: 8px; }

@media (max-width: 820px) {
  .shell { grid-template-columns: 1fr; }
  .summary, .inventory, .guide, .data-tools { grid-column: 1; }
  .summary { grid-template-columns: repeat(3, 1fr); grid-template-rows: 1fr; }
  .summary article { border-right: 1px solid var(--line); border-bottom: 0; grid-template-columns: 1fr; }
  .summary strong { grid-row: auto; grid-column: auto; }
  .controls { grid-template-columns: 1fr 150px 150px; }
  .data-tools { align-items: flex-start; }
}

@media (max-width: 620px) {
  .site-head { height: 52px; padding-inline: 16px; }
  .shell { width: min(100% - 24px, 1180px); padding-top: 16px; }
  .hero { min-height: 0; padding: 20px; }
  .hero h1 { font-size: 24px; }
  .actions { margin-top: 20px; }
  .summary { grid-template-columns: 1fr; }
  .summary article { min-height: 74px; border-right: 0; border-bottom: 1px solid var(--line); grid-template-columns: 1fr auto; }
  .summary strong { grid-row: 1 / 3; grid-column: 2; }
  .inventory { padding: 16px; }
  .controls { grid-template-columns: 1fr; }
  .food-row { grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
  .expiry { grid-row: 2; grid-column: 1; text-align: left; }
  .row-actions { grid-row: 2; grid-column: 2; }
  .guide { grid-template-columns: 1fr; }
  .data-tools { flex-direction: column; }
  .tool-actions { width: 100%; justify-content: flex-start; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid label.full { grid-column: auto; }
  .site-foot { flex-direction: column; gap: 8px; padding-inline: 16px; }
}

@media (max-width: 420px) {
  .privacy-chip { font-size: 9px; }
  .head-actions { gap: 5px; }
  .lang-toggle { padding-inline: 7px; font-size: 10px; }
  .actions { flex-wrap: wrap; }
  .row-actions { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) { * { animation: none !important; scroll-behavior: auto !important; } }