/* Unit Price Compare — clean, high-contrast, print-friendly. No dependencies. */
:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #1c2430;
  --muted: #5b6673;
  --line: #d9dee5;
  --accent: #1f5e8c;
  --accent-ink: #ffffff;
  --best: #e4f6e6;
  --best-line: #2e8b40;
  --danger: #a12622;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 1.25rem;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

header, main, footer { max-width: 52rem; margin: 0 auto 1.5rem; }

h1 { font-size: 1.6rem; margin: 0 0 0.25rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 0.5rem; }
.tagline { color: var(--muted); margin: 0.25rem 0 0; }
main section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem 1.25rem;
}
.hint { font-weight: normal; color: var(--muted); font-size: 0.85rem; }
.hint-block {
  color: var(--muted);
  font-size: 0.9rem;
  border-left: 3px solid var(--line);
  padding-left: 0.6rem;
}

/* Form */
.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.35rem 1rem;
  max-width: 40rem;
}
.grid label { font-size: 0.9rem; font-weight: 600; margin-top: 0.5rem; }
.grid input, .grid select {
  width: 100%;
  padding: 0.45rem 0.5rem;
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
}
form { margin-bottom: 0.5rem; }
button {
  font: inherit;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-ink);
  cursor: pointer;
  margin-right: 0.35rem;
}
button:hover { filter: brightness(1.08); }
button.secondary { background: #fff; color: var(--accent); }
button.danger { background: #fff; color: var(--danger); border-color: var(--danger); }
.file-label {
  position: relative;
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: #fff;
  color: var(--accent);
  cursor: pointer;
  margin-right: 0.35rem;
}
.file-label input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* Rankings table */
table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; }
th, td {
  text-align: left;
  padding: 0.4rem 0.55rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { background: #eef1f4; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); }
tr.best td { background: var(--best); border-top: 1px solid var(--best-line); border-bottom: 1px solid var(--best-line); }
tr.best td:first-child { border-left: 3px solid var(--best-line); }
.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--best-line);
  border: 1px solid var(--best-line);
  border-radius: 999px;
  padding: 0 0.45rem;
  background: #fff;
}
.shelf-title {
  font-weight: 700;
  margin: 0.9rem 0 0.2rem;
  font-size: 1rem;
}
.family-title {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0.4rem 0 0;
}
.row-actions {
  background: none;
  border: none;
  color: var(--danger);
  padding: 0 0.2rem;
  font-size: 0.85rem;
}
.empty { color: var(--muted); font-style: italic; margin: 0.5rem 0; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* Note + status */
#note {
  width: 100%;
  max-width: 40rem;
  padding: 0.5rem;
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 6px;
  resize: vertical;
}
.storage-status { color: var(--muted); font-size: 0.85rem; margin: 0.4rem 0; }
.storage-status.warn { color: var(--danger); font-weight: 600; }
footer { color: var(--muted); font-size: 0.85rem; text-align: center; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 640px) {
  body { padding: 0.75rem; }
  .grid { grid-template-columns: 1fr; }
  th, td { padding: 0.35rem 0.4rem; }
}

@media print {
  body { background: #fff; }
  form, button, .file-label, #note, .row-actions, footer { display: none; }
  main section { border: none; }
}