/* ============================================================
   建築士ツールボックス / 共通スタイル
   Windows 標準ソフトスタイル（メニューグループ + パネル）
   ============================================================ */
:root{
  --win-face:#f5f5f5;
  --win-highlight:#0956a6;      /* Windows アクセント青 */
  --win-highlight-2:#1a6fc4;
  --win-border:#d0d0d0;
  --win-border-2:#b8b8b8;
  --win-text:#1f1f1f;
  --win-text-dim:#666;
  --win-panel:#ffffff;
  --win-line:#e2e2e2;
  --ok:#1a7f37;
  --warn:#b26a00;
  --bad:#c62828;
  --bg:#ececec;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:"Segoe UI","Yu Gothic UI","Yu Gothic","Meiryo",system-ui,sans-serif;
  background:var(--bg);
  color:var(--win-text);
  font-size:14px;
  line-height:1.5;
}
/* ===== トップバー ===== */
.topbar{
  display:flex;align-items:center;gap:10px;
  background:var(--win-highlight);color:#fff;
  padding:0 14px;height:48px;box-shadow:0 1px 3px rgba(0,0,0,.3);
  position:sticky;top:0;z-index:50;
}
.topbar .brand{font-size:17px;font-weight:700;letter-spacing:.3px;display:flex;align-items:center;gap:8px;}
.topbar .brand .logo{
  width:28px;height:28px;border-radius:6px;background:#fff;color:var(--win-highlight);
  display:inline-flex;align-items:center;justify-content:center;font-weight:800;
}
.topbar .crumb{font-size:12px;opacity:.9;}
.topbar .spacer{flex:1;}
.topbar a{color:#fff;text-decoration:none;padding:6px 10px;border-radius:4px;font-size:13px;}
.topbar a:hover{background:rgba(255,255,255,.18);}
.lang-btn{ /* 言語切替（中/日） */
  margin-left:6px;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.45);
  padding:3px 12px;border-radius:5px;font-size:12.5px;cursor:pointer;font-family:inherit;white-space:nowrap;
}
.lang-btn:hover{background:rgba(255,255,255,.28);}

/* ===== レイアウト ===== */
.layout{display:flex;flex-direction:column;min-height:calc(100vh - 48px);}

/* Windows風メニューバー（各グループ=ボタン、クリックで下にドロップダウン） */
.sidebar{
  width:100%;flex:0 0 auto;background:var(--win-face);
  border-bottom:1px solid var(--win-border);
  padding:4px 8px;overflow:visible;
  position:sticky;top:48px;z-index:40;
}
.menubar{display:flex;flex-wrap:wrap;gap:2px;}
.mb-group{position:relative;}
.mb-btn{
  font:inherit;font-size:13px;padding:7px 12px;border:1px solid transparent;border-radius:4px;
  background:transparent;color:var(--win-text);cursor:pointer;
  display:inline-flex;align-items:center;gap:5px;white-space:nowrap;
}
.mb-btn:hover{background:#e3e6ea;}
.mb-group.cur .mb-btn,.mb-group.open .mb-btn{background:var(--win-highlight);color:#fff;font-weight:600;}
.mb-btn .caret{font-size:9px;opacity:.85;}
.mb-panel{
  display:none;position:absolute;top:calc(100% + 2px);left:0;
  min-width:260px;max-width:380px;max-height:64vh;overflow:auto;
  background:var(--win-panel);border:1px solid var(--win-border);
  box-shadow:0 6px 18px rgba(0,0,0,.18);border-radius:6px;padding:6px;z-index:100;
}
.mb-group.open .mb-panel{display:block;}
.mb-panel .mb-link{
  display:block;padding:6px 10px;border-radius:4px;color:var(--win-text);
  text-decoration:none;font-size:13px;white-space:normal;line-height:1.35;
}
.mb-panel .mb-link:hover{background:#e3e6ea;}
.mb-panel .mb-link.active{background:var(--win-highlight);color:#fff;font-weight:600;}

/* メインコンテンツ */
.main{flex:1;align-self:center;width:100%;max-width:1280px;padding:20px 26px 60px;min-width:0;}
.main h1{font-size:22px;margin:0 0 4px;font-weight:700;}
.subtitle{color:var(--win-text-dim);margin:0 0 18px;font-size:13px;}

/* ===== パネル / カード ===== */
.card{
  background:var(--win-panel);border:1px solid var(--win-border);border-radius:6px;
  box-shadow:0 1px 2px rgba(0,0,0,.06);margin:0 0 18px;overflow:hidden;
}
.card > .card-h{
  background:linear-gradient(#fafafa,#f0f0f0);border-bottom:1px solid var(--win-line);
  padding:9px 14px;font-weight:600;font-size:14px;display:flex;align-items:center;gap:8px;
}
.card > .card-h .ic{color:var(--win-highlight);}
.card .card-b{padding:14px 16px;}

/* ===== フォーム ===== */
.field{display:block;margin:0 0 12px;}
.field > label{display:block;font-size:12.5px;color:var(--win-text-dim);margin:0 0 3px;font-weight:600;}
.field .unit-lbl{color:var(--win-text-dim);font-size:11.5px;}
.input-row{display:flex;align-items:center;gap:7px;flex-wrap:wrap;}
input[type=text],input[type=number],select,textarea{
  font:inherit;padding:6px 8px;border:1px solid var(--win-border-2);border-radius:4px;
  background:#fff;color:var(--win-text);min-height:32px;
}
input:focus,select:focus,textarea:focus{outline:2px solid rgba(9,86,166,.4);border-color:var(--win-highlight);}
fieldset.inline{
  border:1px solid var(--win-line);border-radius:5px;padding:10px 12px;margin:0 0 12px;
}
fieldset.inline legend{font-size:12px;font-weight:600;color:var(--win-text-dim);padding:0 6px;}
fieldset.inline label{display:inline-flex;align-items:center;gap:5px;margin-right:16px;font-size:13px;cursor:pointer;}

/* ===== ボタン ===== */
.btn{
  font:inherit;border:1px solid var(--win-border-2);border-radius:4px;padding:7px 16px;
  background:linear-gradient(#fdfdfd,#efefef);cursor:pointer;color:var(--win-text);
  display:inline-flex;align-items:center;gap:6px;
}
.btn:hover{background:linear-gradient(#fff,#f4f4f4);border-color:#a0a0a0;}
.btn:active{background:#e8e8e8;}
.btn.primary{background:var(--win-highlight);border-color:var(--win-highlight);color:#fff;}
.btn.primary:hover{background:var(--win-highlight-2);}
.btn.green{background:#16803a;border-color:#16803a;color:#fff;}
.btn.green:hover{background:#1a9443;}
.btn.sm{padding:4px 10px;font-size:12.5px;}
button:disabled{opacity:.5;cursor:not-allowed;}

/* ===== テーブル ===== */
table.grid{width:100%;border-collapse:collapse;font-size:13px;}
table.grid th,table.grid td{border:1px solid var(--win-line);padding:6px 8px;text-align:left;}
table.grid th{background:#f4f6f8;font-weight:600;}
table.grid tr:nth-child(even) td{background:#fafbfc;}
table.grid td.num,table.grid th.num{text-align:right;font-variant-numeric:tabular-nums;}
table.grid tr.total td{font-weight:700;background:#eef4fb;}
table.grid tr.alert td{color:var(--bad);font-weight:700;background:#fdecec;}

/* ===== 結果 ===== */
.result{
  background:#f2f7fd;border:1px solid #bfd6ef;border-left:4px solid var(--win-highlight);
  border-radius:5px;padding:12px 14px;margin:14px 0;
}
.result .big{font-size:26px;font-weight:800;color:var(--win-highlight);margin:2px 0;font-variant-numeric:tabular-nums;}
.result .big small{font-size:14px;font-weight:600;color:var(--win-text-dim);}
.result.ok{background:#f1f9f2;border:1px solid #b5d9bd;border-left:4px solid var(--ok);}
.result.ok .big{color:var(--ok);}
.result.bad{background:#fdf2f2;border:1px solid #e7bcbc;border-left:4px solid var(--bad);}
.result.bad .big{color:var(--bad);}
.result.warn{background:#fdf7ec;border:1px solid #ead8b0;border-left:4px solid var(--warn);}
.result.warn .big{color:var(--warn);}
.result-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px 18px;margin-top:8px;}
.result-item{font-size:13px;}
.result-item .k{color:var(--win-text-dim);}
.result-item .v{font-weight:700;font-variant-numeric:tabular-nums;}

/* ===== バッジ ===== */
.badge{display:inline-block;padding:2px 9px;border-radius:10px;font-size:11.5px;font-weight:700;}
.badge.g{background:#e2f3e6;color:var(--ok);}
.badge.w{background:#fdf0d9;color:var(--warn);}
.badge.r{background:#fbe1e1;color:var(--bad);}
.badge.b{background:#e2ecfb;color:var(--win-highlight);}

/* ===== ナビバー / タブ ===== */
.stepper{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 16px;}
.stepper .step{
  font-size:12.5px;padding:6px 12px;border-radius:14px;background:#f0f0f0;
  color:var(--win-text-dim);border:1px solid var(--win-border);
}
.stepper .step.done{background:#e2ecfb;color:var(--win-highlight);border-color:#bfd6ef;}
.stepper .step.cur{background:var(--win-highlight);color:#fff;border-color:var(--win-highlight);font-weight:700;}

/* ===== キャンバス ===== */
.canvas-box{background:#fff;border:1px solid var(--win-line);border-radius:5px;padding:10px;text-align:center;}
.canvas-box canvas{max-width:100%;height:auto;}

/* ===== チェックリスト生成 ===== */
.sheet-page{
  background:#fff;border:1px solid var(--win-border);border-radius:4px;padding:22px 26px;
  font-size:12.5px;color:#111;
}
.sheet-page h2{border-bottom:2px solid #111;padding-bottom:6px;margin:0 0 14px;font-size:16px;}
.sheet-page table{width:100%;border-collapse:collapse;font-size:12.5px;}
.sheet-page td,.sheet-page th{border:1px solid #666;padding:6px 8px;}
.sheet-page th{background:#efefef;}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 14px;}

/* ===== チャート色 ===== */
.legend{display:flex;gap:16px;font-size:12.5px;color:var(--win-text-dim);margin-top:6px;flex-wrap:wrap;}
.legend span{display:inline-flex;align-items:center;gap:5px;}
.legend i{width:14px;height:3px;display:inline-block;border-radius:2px;}

/* ===== ヘルプメモ ===== */
.memo{
  background:#fffbe9;border:1px solid #ece0b0;border-radius:5px;padding:9px 12px;
  font-size:12px;color:#5a4f22;margin:10px 0;
}
.memo b{color:#8a7110;}
.memo.warn{background:#fdeaea;border-color:#ebc0c0;color:#6b2222;}
.memo.warn b{color:#b02a2a;}

/* ===== レスポンシブ ===== */
@media (max-width:900px){
  .layout{flex-direction:column;}
  .sidebar{width:100%;border-right:none;border-bottom:1px solid var(--win-border);}
  .menu-group{display:flex;flex-wrap:wrap;gap:4px;}
  .menu-group a{margin:0;}
}
.section-title{font-size:15px;font-weight:700;margin:20px 0 10px;padding-left:9px;border-left:4px solid var(--win-highlight);}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
@media (max-width:900px){.row2{grid-template-columns:1fr;}}
.hidden{display:none !important;}
a.txt-link{color:var(--win-highlight);text-decoration:none;}
a.txt-link:hover{text-decoration:underline;}
footer{color:var(--win-text-dim);font-size:11.5px;text-align:center;padding:24px 0 10px;}