/* ============================================================================
 * JIS 公差ツール（Web 版）スタイル
 * 清爽な工業風・日本語 UI。ライトテーマ、スチールブルー基調。
 * ==========================================================================*/
:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --ink: #1f2a37;
  --muted: #6b7280;
  --line: #d8dee8;
  --accent: #1f6fb2;
  --accent-d: #155488;
  --accent-soft: #e8f1f9;
  --ok: #1f9d55;
  --warn: #c9772b;
  --bad: #c0392b;
  --chip: #eef2f7;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(20, 40, 70, .08), 0 4px 14px rgba(20, 40, 70, .06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", "Noto Sans JP", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.55;
}
a { color: var(--accent); }

header.app {
  position: relative;
  background: linear-gradient(180deg, #1f6fb2, #155488);
  color: #fff;
  padding: 14px 20px;
  box-shadow: var(--shadow);
}
header.app .home-link {
  position: absolute; top: 12px; right: 18px;
  color: #fff; text-decoration: none; font-size: 12.5px;
  background: rgba(255, 255, 255, .16); padding: 5px 13px; border-radius: 999px;
  transition: .15s;
}
header.app .home-link:hover { background: rgba(255, 255, 255, .32); }
header.app h1 { margin: 0; font-size: 19px; letter-spacing: .04em; }
header.app p { margin: 4px 0 0; font-size: 12px; opacity: .85; }

nav.tabs {
  display: flex; flex-wrap: wrap; gap: 6px;
  background: #fff; border-bottom: 1px solid var(--line);
  padding: 8px 12px; position: sticky; top: 0; z-index: 20;
  box-shadow: 0 2px 8px rgba(20,40,70,.05);
}
nav.tabs button {
  border: 1px solid var(--line); background: var(--panel);
  color: var(--ink); padding: 7px 12px; border-radius: 999px;
  cursor: pointer; font-size: 12.5px; white-space: nowrap; transition: .15s;
}
nav.tabs button:hover { border-color: var(--accent); color: var(--accent); }
nav.tabs button.active { background: var(--accent); border-color: var(--accent); color: #fff; }

main { max-width: 1080px; margin: 18px auto; padding: 0 16px 60px; }

.panel { display: none; }
.panel.active { display: block; animation: fade .18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px; margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 12px; font-size: 15px; color: var(--accent-d); border-left: 4px solid var(--accent); padding-left: 10px; }
.card h3 { margin: 16px 0 8px; font-size: 13.5px; color: var(--ink); }
.muted { color: var(--muted); font-size: 12px; }
.hint { background: var(--accent-soft); border: 1px solid #cfe4f5; border-radius: 8px; padding: 8px 12px; font-size: 12px; color: var(--accent-d); margin-bottom: 12px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 14px; background: #fff; color: var(--ink);
  font-family: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent); color: #fff; border: none;
  padding: 9px 16px; border-radius: 8px; cursor: pointer; font-size: 13px;
  font-family: inherit; transition: .15s;
}
.btn:hover { background: var(--accent-d); }
.btn.ghost { background: #fff; color: var(--accent); border: 1px solid var(--accent); }
.btn.ghost:hover { background: var(--accent-soft); }
.btn.sm { padding: 6px 10px; font-size: 12px; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 12px; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 12.5px; margin-top: 8px; }
table.tbl th, table.tbl td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
table.tbl th { background: #f0f4f9; color: var(--accent-d); font-weight: 600; }
table.tbl tr:nth-child(even) td { background: #fafcff; }
table.tbl td.num { text-align: right; font-variant-numeric: tabular-nums; }

.result { margin-top: 14px; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-variant-numeric: tabular-nums; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.clear { background: #e6f6ec; color: var(--ok); }
.badge.trans { background: #fff3e0; color: var(--warn); }
.badge.inter { background: #fdeaea; color: var(--bad); }

.svgbox { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 8px; text-align: center; }
.svgbox svg { max-width: 100%; height: auto; }

.tag { display: inline-block; background: var(--chip); border: 1px solid var(--line); border-radius: 6px; padding: 2px 8px; font-size: 11.5px; margin: 2px; }

.framepad { display: inline-block; background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; font-size: 14px; }
.framepad .cell { display: inline-block; border: 1px solid var(--ink); padding: 6px 12px; margin: -1px -1px -1px 0; min-width: 42px; text-align: center; font-family: "Courier New", monospace; }

ul.recs { list-style: none; padding: 0; margin: 8px 0 0; }
ul.recs li { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-bottom: 8px; }
ul.recs li .fitcode { font-weight: 700; color: var(--accent-d); font-family: "Courier New", monospace; }
ul.recs li .cls { font-size: 11.5px; padding: 1px 8px; border-radius: 999px; margin-left: 6px; }
ul.recs li .note { display: block; color: var(--muted); font-size: 12px; margin-top: 4px; }

.dimrow { display: grid; grid-template-columns: 1.4fr 1fr 1fr 0.5fr; gap: 8px; align-items: end; margin-bottom: 6px; }
.dimrow input { width: 100%; }
.dimrow .del { background: #fdeaea; color: var(--bad); border: 1px solid #f3c4c0; border-radius: 8px; cursor: pointer; padding: 8px; }

.listbox { border: 1px solid var(--line); border-radius: 8px; max-height: 220px; overflow: auto; padding: 6px; background: #fff; }
.listbox div { padding: 5px 8px; border-bottom: 1px dashed var(--line); font-size: 12.5px; display: flex; justify-content: space-between; gap: 10px; }
.listbox div:last-child { border-bottom: none; }

footer { text-align: center; color: var(--muted); font-size: 11.5px; padding: 20px; }

@media (max-width: 640px) {
  .dimrow { grid-template-columns: 1fr 1fr; }
  nav.tabs button { font-size: 11.5px; padding: 6px 9px; }
}

/* ============ Print: export only the currently-active panel ============ */
@media print {
  body { background: #fff; }
  nav.tabs, footer, .no-print, .row.no-print { display: none !important; }
  main .panel:not(.active) { display: none !important; }
  main .panel.active { display: block !important; }
  .card { box-shadow: none; border: 1px solid #999; break-inside: avoid; }
  .svgbox { page-break-inside: avoid; border: 1px solid #ccc; }
  table.tbl { width: 100%; font-size: 11px; }
  .report-doc h2 { color: #155488; }
}