/* 採光電卓 — 製図台に置いた電卓、をイメージしたダーク専用UI
   色は CAD のレイヤー色に合わせる：窓=シアン / 境界=赤 / 寸法=琥珀 / 検討線=緑 */
:root {
  color-scheme: dark;
  --bg: #0f151c;
  --panel: #161e27;
  --panel-2: #1c2632;
  --inset: #0a0f14;
  --line: #283443;
  --line-2: #364559;
  --text: #e6ebf1;
  --muted: #8593a4;
  --cyan: #5ac8e6;
  --amber: #e8c66a;
  --green: #7fdc95;
  --red: #ff7d7d;
  --orange: #f0a95a;
  --mono: "SF Mono", "Cascadia Mono", Consolas, Menlo, "BIZ UDGothic", monospace;
  --sans: "Hiragino Sans", "BIZ UDPGothic", "Yu Gothic UI", "Noto Sans JP", Meiryo, system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.6 var(--sans);
  padding-bottom: calc(64px + env(safe-area-inset-bottom));
}
body.noscroll { overflow: hidden; }
button, input, select { font: inherit; color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 700; }
h2 { font-size: 17px; margin-bottom: 12px; }
h3 { font-size: 13px; color: var(--muted); margin: 20px 0 8px; font-weight: 600; letter-spacing: .02em; }
h4 { font-size: 13px; margin: 0 0 8px; font-weight: 700; color: var(--cyan); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.dim { color: var(--muted); }

/* ---- ヘッダー ---- */
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: calc(10px + env(safe-area-inset-top)) 16px 4px;
}
.brand h1 { font-size: 20px; letter-spacing: .04em; }
.notice { margin: 0; padding: 0 16px 10px; font-size: 12px; color: var(--amber); line-height: 1.5; }
.notice.okv { color: var(--muted); }

/* ---- ヘッダー〜注記〜結果ストリップをまとめて上部固定（スクロールで動かない） ---- */
.topbar {
  position: sticky; top: 0; z-index: 20; background: var(--bg);
}
.strip {
  background: var(--bg);
  padding: 8px 12px 10px;
  border-bottom: 1px solid var(--line);
  display: grid; gap: 8px;
}
.badge {
  justify-self: start; display: inline-flex; align-items: center; gap: 8px;
  padding: 3px 12px 3px 10px; border-radius: 999px; font-weight: 700; font-size: 15px;
  border: 1px solid var(--line-2); background: var(--panel);
}
.badge::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.v-ok .badge { color: var(--green); border-color: rgba(127,220,149,.5); background: rgba(127,220,149,.09); }
.v-ok .badge::before { background: var(--green); }
.v-caution .badge { color: var(--orange); border-color: rgba(240,169,90,.55); background: rgba(240,169,90,.09); }
.v-caution .badge::before { background: var(--orange); }
.v-ng .badge { color: var(--red); border-color: rgba(255,125,125,.55); background: rgba(255,125,125,.09); }
.v-ng .badge::before { background: var(--red); }
.lcd {
  margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  box-shadow: inset 0 2px 8px rgba(0,0,0,.5);
}
.lcd > div { background: var(--inset); padding: 6px 10px 6px; text-align: right; min-width: 0; }
.lcd dt { font-size: 10.5px; color: var(--muted); text-align: left; white-space: nowrap; }
.lcd dd { margin: 0; font: 600 24px/1.25 var(--mono); font-variant-numeric: tabular-nums; color: #dff6ff; white-space: nowrap; }
.lcd dd small { font: 500 11px var(--sans); color: var(--muted); margin-left: 2px; }
.v-ok .lcd dd.mg { color: var(--green); }
.v-caution .lcd dd.mg { color: var(--orange); }
.v-ng .lcd dd.mg { color: var(--red); }

/* ---- レイアウト ---- */
.grid { padding: 12px; display: grid; gap: 12px; max-width: 720px; margin: 0 auto; }
.col-in, .col-out { display: contents; }
#panelSvg { order: 1; } #panelBld { order: 2; } #panelRoom { order: 3; } #panelOpening { order: 4; } #panelBasis { order: 5; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
#panelSvg { padding: 0; overflow: hidden; border-radius: 16px; }
.svg-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; padding: 12px 16px 8px; }
.svg-head h2 { margin: 0; font-size: 15px; }
.svg-head span { font-size: 11.5px; color: var(--muted); }
.svgbox { background: #12181f; border-top: 1px solid var(--line); }
.svgbox svg { display: block; width: 100%; height: auto; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; padding: 8px 16px 12px; font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 14px; height: 3px; border-radius: 2px; margin-right: 6px; vertical-align: middle; }

/* PCモニター・スマホ横画面：右に図形を固定し、左だけをスクロールする2カラム。
 * 図形は横幅ではなく「縦に画面へ収まるかどうか」を基準に縮小する
 * （階数が多い建物ほど縦長になるため、横幅基準だとはみ出て見切れる／内部スクロールが起きる）。 */
@media (min-width: 640px) {
  .grid { display: flex; align-items: flex-start; gap: 24px; max-width: 1200px; margin: 0 auto; padding: 16px 24px; }
  .col-in, .col-out { display: block; }
  .col-in { flex: 1 1 340px; max-width: 380px; min-width: 300px; }
  /* .col-out はレイアウト上の余白確保だけの役目（中身は #panelSvg を fixed で重ねる） */
  .col-out { flex: 1 1 620px; max-width: 700px; min-width: 320px; }
  #panelSvg {
    display: flex; flex-direction: column;
    position: fixed; z-index: 15;
    top: var(--topbar-h, 104px);
    left: var(--diagram-left, auto);
    width: var(--diagram-w, auto);
    max-height: calc(100vh - var(--topbar-h, 104px) - 16px);
    max-height: calc(100dvh - var(--topbar-h, 104px) - 16px);
  }
  .svgbox {
    flex: 1 1 auto; min-height: 0;
    display: flex; align-items: center; justify-content: center;
  }
  .svgbox svg { width: auto; height: auto; max-width: 100%; max-height: 100%; }
}

/* 建物パネル：最初に決めたら基本変わらないため、居室・開口と見た目を分けて折りたためるようにする */
details.panel-setup { padding: 0; border-color: rgba(232, 198, 106, .35); }
details.panel-setup > summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 10px;
  padding: 16px; font-weight: 700; font-size: 17px;
}
details.panel-setup > summary::-webkit-details-marker { display: none; }
details.panel-setup > summary::after { content: '▾'; margin-left: auto; color: var(--muted); transition: transform .15s; }
details.panel-setup[open] > summary { padding-bottom: 12px; border-bottom: 1px solid var(--line); }
details.panel-setup[open] > summary::after { transform: rotate(180deg); }
details.panel-setup > summary .tag {
  font-size: 11px; font-weight: 600; color: var(--amber); border: 1px solid rgba(232, 198, 106, .4);
  background: rgba(232, 198, 106, .08); padding: 2px 8px; border-radius: 999px;
}
#panelBldBody { padding: 16px; }

/* ---- 入力部品 ---- */
.row { display: grid; gap: 12px; margin-bottom: 12px; }
.row.two { grid-template-columns: 1fr 1fr; }
.row.btns { grid-template-columns: 1fr; align-items: end; }
.fld { min-width: 0; }
.fld > label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 4px; }
.ctl {
  display: flex; align-items: stretch; height: 46px;
  background: var(--inset); border: 1px solid var(--line-2); border-radius: 10px; overflow: hidden;
}
.ctl:focus-within { border-color: var(--cyan); }
.ctl input, .ctl select {
  flex: 1; min-width: 0; border: 0; background: transparent; padding: 0 8px; outline: none;
  font: 500 18px var(--mono); font-variant-numeric: tabular-nums; text-align: right;
}
.ctl input[type=number] { min-width: 64px; }
.ctl input[type=text] { font: 500 16px var(--sans); text-align: left; padding: 0 12px; }
.ctl select { font: 500 15px var(--sans); text-align: left; padding: 0 10px; width: 100%; }
.ctl select option { background: var(--panel); }
.ctl .unit { align-self: center; font-size: 12px; color: var(--muted); padding-right: 6px; }
.stp {
  flex: 0 0 38px; border: 0; background: var(--panel-2); color: var(--cyan);
  font-size: 18px; line-height: 1; cursor: pointer;
}
.stp:first-child { border-right: 1px solid var(--line-2); }
.stp:last-child { border-left: 1px solid var(--line-2); }
.stp:active { background: var(--line); }
.stp.go { flex: 0 0 58px; font-size: 14px; font-weight: 700; }
.ctl input[type=number]::-webkit-outer-spin-button, .ctl input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.ctl input[type=number] { -moz-appearance: textfield; appearance: textfield; }
.hint { display: block; margin-top: 4px; font-size: 11.5px; color: var(--muted); line-height: 1.5; }
.hint.warn, .warn { color: var(--orange); }
.check { display: flex; align-items: center; gap: 10px; margin: 6px 0 12px; min-height: 44px; }
.check input { width: 20px; height: 20px; accent-color: var(--cyan); }
.readout { font-size: 12.5px; color: var(--amber); font-family: var(--mono); margin: -4px 0 12px; line-height: 1.7; }
.readout:empty { display: none; }
details.more { margin: 0 0 12px; border: 1px dashed var(--line-2); border-radius: 10px; padding: 0 12px; }
details.more summary { cursor: pointer; padding: 10px 0; font-size: 13px; color: var(--cyan); }
details.more[open] { padding-bottom: 6px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.chip {
  min-height: 38px; padding: 0 14px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--line-2); background: transparent; color: var(--muted);
}
.chip.on { background: var(--cyan); border-color: var(--cyan); color: #06222b; font-weight: 700; }
.chip.add { border-style: dashed; color: var(--cyan); }
.chip.sm { min-height: 34px; padding: 0 12px; font: 500 13px var(--mono); }
.chips.tight { gap: 6px; margin: 6px 0 0; }
.choice { min-width: 0; }
.choice .chips { margin-bottom: 0; }
.floorblk { border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin-bottom: 12px; background: var(--inset); }
.floorblk:last-of-type { margin-bottom: 12px; }
.svgbox svg [data-drag] { -webkit-tap-highlight-color: transparent; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 16px;
  border-radius: 10px; border: 1px solid var(--line-2); background: var(--panel-2); cursor: pointer; text-align: center;
}
.btn.primary { background: var(--cyan); border-color: var(--cyan); color: #06222b; font-weight: 700; }
.btn.danger { color: var(--red); border-color: rgba(255,125,125,.4); background: transparent; margin-top: 8px; }
.btn.ghost { background: transparent; }
.btn.file { margin-right: 8px; }
.btn:active { filter: brightness(.9); }

/* ---- 窓カード ---- */
.wcard { display: flex; gap: 14px; padding: 12px; border: 1px solid var(--line-2); border-radius: 12px; background: var(--panel-2); margin-bottom: 6px; }
.wcard.empty { color: var(--muted); }
.wimg { position: relative; flex: 0 0 60px; height: 60px; display: grid; place-items: center; }
.winfo { min-width: 0; font-size: 13.5px; }
.wtitle { font-size: 16px; }
.wtitle b { font: 700 18px var(--mono); color: var(--cyan); margin-right: 4px; }
.wmeta, .wsize, .weff { color: var(--muted); }
.wsize, .weff { color: var(--text); font-size: 13px; }
.weff b { color: var(--amber); font-family: var(--mono); }
.pill { display: inline-block; margin: 0 6px; padding: 0 8px; border-radius: 999px; font-size: 11px; border: 1px solid var(--line-2); color: var(--muted); }
.pill.fire { color: var(--orange); border-color: rgba(240,169,90,.5); }
.pill.bad { color: var(--red); border-color: rgba(255,125,125,.5); }

/* ---- 計算根拠 ---- */
.blk { border-top: 1px solid var(--line); padding: 12px 0; }
.blk:first-of-type { border-top: 0; padding-top: 0; }
.bh { font-weight: 700; font-size: 14px; margin-bottom: 4px; }
.bl { font-size: 13px; color: #c4ceda; line-height: 1.7; padding-left: 0; word-break: break-word; }
.bl b { color: var(--text); font-family: var(--mono); }
.hintline { margin-top: 6px; color: var(--amber); }
.blk.total { background: var(--inset); border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin-top: 4px; }
.rulebox { margin: 14px 0; padding: 12px; border-radius: 10px; border: 1px solid rgba(240,169,90,.45); background: rgba(240,169,90,.07); }
.rulebox.okv { border-color: var(--line-2); background: transparent; }
.rb-h { font-weight: 700; color: var(--orange); font-size: 13px; }
.rulebox.okv .rb-h { color: var(--green); }
.rb-l { font-size: 12.5px; color: #c4ceda; line-height: 1.6; margin-top: 4px; }

/* ---- 下部モードバー ---- */
.modebar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; display: flex;
  padding: 6px 8px calc(6px + env(safe-area-inset-bottom)); gap: 6px;
  background: rgba(15,21,28,.96); border-top: 1px solid var(--line);
}
.mode {
  flex: 1; min-height: 46px; border-radius: 10px; border: 1px solid transparent; background: transparent;
  color: var(--muted); font-weight: 700; display: grid; place-items: center; line-height: 1.2; cursor: pointer;
}
.mode small { font-weight: 500; font-size: 10.5px; }
.mode.on { background: var(--panel-2); border-color: var(--line-2); color: var(--cyan); }
.mode:disabled { opacity: .55; cursor: default; }

/* ---- シート ---- */
.sheet { position: fixed; inset: 0; z-index: 50; background: rgba(4,7,10,.72); display: flex; align-items: flex-end; justify-content: center; }
.sheet[hidden], #toast[hidden] { display: none; }
.sheet-panel {
  width: 100%; max-width: 620px; max-height: 90vh; max-height: 90dvh; overflow: auto; overscroll-behavior: contain;
  background: var(--panel); border: 1px solid var(--line-2); border-radius: 18px 18px 0 0;
  padding: 16px 16px calc(24px + env(safe-area-inset-bottom));
}
@media (min-width: 700px) { .sheet { align-items: center; } .sheet-panel { border-radius: 18px; } }
.sh-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.sh-head h2 { margin: 0; }
.sample-note { font-size: 12px; color: var(--orange); margin-bottom: 8px; }
.search {
  width: 100%; height: 46px; padding: 0 14px; margin-bottom: 10px; border-radius: 10px;
  border: 1px solid var(--line-2); background: var(--inset); font-size: 16px; outline: none;
}
.search:focus { border-color: var(--cyan); }
.plist { display: grid; gap: 6px; }
.prow {
  display: grid; grid-template-columns: 48px 1fr auto; gap: 12px; align-items: center; text-align: left;
  padding: 8px 12px 8px 8px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel-2); cursor: pointer; min-height: 60px;
}
.prow.on { border-color: var(--cyan); }
.prow:active { filter: brightness(.9); }
.pi { position: relative; width: 44px; height: 44px; display: grid; place-items: center; }
.pt b { font: 700 16px var(--mono); color: var(--cyan); }
.pt small, .ps small { color: var(--muted); font-size: 11.5px; }
.ps { text-align: right; font: 500 12px var(--mono); }
.empty { color: var(--muted); padding: 16px; text-align: center; }

#toast {
  position: fixed; left: 50%; bottom: calc(84px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 60;
  background: var(--text); color: #0b1218; padding: 8px 16px; border-radius: 999px; font-size: 13px; font-weight: 700;
}

@media (max-width: 380px) {
  .lcd dd { font-size: 20px; }
  .stp { flex-basis: 32px; }
}
@media (prefers-reduced-motion: no-preference) {
  .badge, .lcd dd { transition: color .15s, border-color .15s, background-color .15s; }
}