/* ===========================================================
   DS 엔지니어링 계산기 — 스타일
   =========================================================== */

:root{
  --font: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont,
          'Segoe UI', 'Malgun Gothic', '맑은 고딕', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'Cascadia Mono', Consolas, 'D2Coding', ui-monospace, monospace;

  --bg:#f4f6fb;
  /* 삼성 블루(#1428a0) 계열로 통일한 배경 글로우 */
  --bg-grad:
    radial-gradient(880px 420px at 10% -14%, rgba(20,40,160,.11) 0%, transparent 62%),
    radial-gradient(720px 380px at 94% 2%, rgba(20,40,160,.055) 0%, transparent 60%);
  --wafer-op:.11;                  /* 웨이퍼 농도 */
  --sram-op:.42;                   /* SRAM 모식도 농도 */
  --plate:linear-gradient(180deg,#ffffff 0%,#f1f5fd 100%);
  --plate-line:#dde4f2;
  --panel:#ffffff;
  --panel-2:#f8fafd;
  --panel-3:#eef2fa;
  --line:#e2e8f3;
  --line-2:#d3dbeb;
  --txt:#0f172a;
  --txt-2:#475569;
  --muted:#7a869a;
  --accent:#1428a0;
  --accent-2:#2f4ce0;
  --accent-soft:#e8ecff;
  --good:#0b8a55;
  --good-soft:#e3f7ee;
  --warn:#b26a00;
  --warn-soft:#fdf1dd;
  --bad:#c62828;
  --bad-soft:#fdeaea;
  --shadow:0 1px 2px rgba(15,23,42,.05), 0 10px 30px -12px rgba(15,23,42,.18);
  --radius:16px;
  --radius-s:10px;
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#080b12;
    --bg-grad:
      radial-gradient(880px 420px at 10% -14%, rgba(92,122,255,.17) 0%, transparent 62%),
      radial-gradient(720px 380px at 94% 2%, rgba(60,90,220,.10) 0%, transparent 60%);
    --wafer-op:.15;
    --sram-op:.45;
    --plate:linear-gradient(180deg,#f7f9ff 0%,#e7ecf9 100%);
    --plate-line:#39425c;
    --panel:#111623;
    --panel-2:#0d1220;
    --panel-3:#1a2133;
    --line:#212a3d;
    --line-2:#2c374e;
    --txt:#e7ebf5;
    --txt-2:#aeb9cd;
    --muted:#8491a8;
    --accent:#8aa1ff;
    --accent-2:#6d8bff;
    --accent-soft:#1a2244;
    --good:#3ddc97;
    --good-soft:#12271f;
    --warn:#f0b429;
    --warn-soft:#2a2113;
    --bad:#ff6b6b;
    --bad-soft:#2c1618;
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 12px 32px -14px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"]{
  --bg:#080b12;
  --bg-grad:
    radial-gradient(880px 420px at 10% -14%, rgba(92,122,255,.17) 0%, transparent 62%),
    radial-gradient(720px 380px at 94% 2%, rgba(60,90,220,.10) 0%, transparent 60%);
  --wafer-op:.15;
  --sram-op:.45;
  --plate:linear-gradient(180deg,#f7f9ff 0%,#e7ecf9 100%);
  --plate-line:#39425c;
  --panel:#111623;
  --panel-2:#0d1220;
  --panel-3:#1a2133;
  --line:#212a3d;
  --line-2:#2c374e;
  --txt:#e7ebf5;
  --txt-2:#aeb9cd;
  --muted:#8491a8;
  --accent:#8aa1ff;
  --accent-2:#6d8bff;
  --accent-soft:#1a2244;
  --good:#3ddc97;
  --good-soft:#12271f;
  --warn:#f0b429;
  --warn-soft:#2a2113;
  --bad:#ff6b6b;
  --bad-soft:#2c1618;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 12px 32px -14px rgba(0,0,0,.7);
}

*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);
  font-size:14px;
  line-height:1.55;
  color:var(--txt);
  background:var(--bg);
  background-image:var(--bg-grad);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  -webkit-text-size-adjust:100%;
}
h1,h2,h3,p{margin:0}
button{font:inherit;color:inherit}
a{color:var(--accent-2)}

/* ---------- 배경 레이어 (웨이퍼 + SRAM 모식도) ----------
   ::before = 웨이퍼,  ::after = SRAM 6T 셀 어레이 */
body::before{
  content:'';position:fixed;z-index:-1;pointer-events:none;
  right:-6vw;top:5vh;width:min(68vh,680px);aspect-ratio:1;
  background:url(../assets/wafer.svg) no-repeat center/contain;
  opacity:var(--wafer-op);
}
body::after{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:url(../assets/sram.svg) repeat;
  background-size:250px 250px;
  opacity:var(--sram-op);
  -webkit-mask-image:linear-gradient(155deg, #000 0%, rgba(0,0,0,.45) 48%, transparent 85%);
  mask-image:linear-gradient(155deg, #000 0%, rgba(0,0,0,.45) 48%, transparent 85%);
}

.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--accent);color:#fff;padding:8px 14px;border-radius:0 0 8px 0}
.skip:focus{left:0}

/* ---------- layout ---------- */
.app{display:grid;grid-template-columns:272px minmax(0,1fr);min-height:100vh}

.sidebar{
  position:sticky;top:0;height:100vh;display:flex;flex-direction:column;
  background:var(--panel);border-right:1px solid var(--line);
  padding-top:env(safe-area-inset-top,0px);
  z-index:30;
}
/* 브랜드 영역 — 뒤로 SRAM 셀이 지나가고, 로고는 그 위에 얹힘 */
.brand{
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;align-items:flex-start;gap:11px;
  padding:18px 18px 16px;
}
.brand::before{
  content:'';position:absolute;inset:-10px -10px 0 -10px;pointer-events:none;
  background:url(../assets/sram.svg) repeat;
  background-size:190px 190px;
  opacity:.5;
  -webkit-mask-image:linear-gradient(200deg, transparent 8%, #000 55%, transparent 96%);
  mask-image:linear-gradient(200deg, transparent 8%, #000 55%, transparent 96%);
}
.brand > *{position:relative}

/* 로고 받침 — 장식 없이 톤만 잡아주는 면 */
.brand-plate{
  width:176px;max-width:100%;
  padding:10px 12px;border-radius:12px;
  background:var(--plate);
  border:1px solid var(--plate-line);
  box-shadow:0 1px 2px rgba(15,23,42,.05);
}
.brand-img{width:100%;height:auto;display:block}
.brand-mark{width:34px;height:34px;color:var(--accent);flex:0 0 auto;margin:0 auto;display:block}
.brand-txt{display:flex;flex-direction:column;line-height:1.2}
.brand-txt strong{font-size:16px;letter-spacing:-.2px}
.brand-txt span{font-size:11.5px;color:var(--muted)}

.search-wrap{padding:0 14px 12px}
#search{
  width:100%;padding:9px 12px;border-radius:var(--radius-s);
  border:1px solid var(--line-2);background:var(--panel-2);color:var(--txt);
  font-size:13px;outline:none;transition:border-color .15s, box-shadow .15s;
}
#search:focus{border-color:var(--accent-2);box-shadow:0 0 0 3px var(--accent-soft)}

.nav{flex:1;overflow-y:auto;padding:0 10px 10px;scrollbar-width:thin}
.nav-cat{
  font-size:10.5px;font-weight:700;letter-spacing:.09em;color:var(--muted);
  text-transform:uppercase;padding:14px 8px 6px;
}
.nav-item{
  display:flex;align-items:center;gap:9px;width:100%;text-align:left;
  padding:8px 10px;border-radius:9px;border:1px solid transparent;background:none;
  cursor:pointer;color:var(--txt-2);font-size:13.2px;line-height:1.3;
  transition:background .12s,color .12s;
}
.nav-item:hover{background:var(--panel-3);color:var(--txt)}
.nav-item.on{background:var(--accent-soft);color:var(--accent);font-weight:600;border-color:color-mix(in srgb,var(--accent) 22%, transparent)}
.nav-ico{width:20px;text-align:center;font-size:14px;flex:0 0 auto}
.nav-empty{padding:16px 10px;color:var(--muted);font-size:12.5px}

.side-foot{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 14px calc(12px + env(safe-area-inset-bottom,0px));
  border-top:1px solid var(--line);
}
.ver{font-size:11px;color:var(--muted)}

.ghost{
  border:1px solid var(--line-2);background:var(--panel-2);color:var(--txt-2);
  padding:6px 11px;border-radius:8px;cursor:pointer;font-size:12.5px;
  transition:background .12s,border-color .12s,color .12s;
}
.ghost:hover{background:var(--panel-3);color:var(--txt);border-color:var(--accent-2)}
.icon-btn{border:1px solid var(--line-2);background:var(--panel-2);border-radius:8px;padding:5px 10px;cursor:pointer;font-size:15px}

.main{min-width:0;display:flex;flex-direction:column}
.topbar{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;
  padding:calc(10px + env(safe-area-inset-top,0px)) 22px 10px;
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar-title{font-size:13px;color:var(--muted);font-weight:600}
.spacer{flex:1}
.only-mobile{display:none}

.view{padding:22px;max-width:1220px;width:100%}
.foot{
  margin-top:auto;padding:22px 22px calc(26px + env(safe-area-inset-bottom,0px));
  max-width:1220px;color:var(--muted);font-size:11.5px;line-height:1.6;
}
.foot-dim{opacity:.75;margin-top:4px}

.scrim{position:fixed;inset:0;background:rgba(8,11,18,.45);z-index:25;border:0}

/* ---------- tool head ---------- */
.tool-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px}
.tool-icon{
  width:46px;height:46px;flex:0 0 auto;border-radius:13px;
  display:grid;place-items:center;font-size:22px;
  background:var(--accent-soft);color:var(--accent);
  border:1px solid color-mix(in srgb,var(--accent) 18%, transparent);
}
.chip{
  display:inline-block;font-size:10.5px;font-weight:700;letter-spacing:.06em;
  color:var(--accent);background:var(--accent-soft);padding:2px 8px;border-radius:999px;margin-bottom:5px;
}
.tool-head h1{font-size:21px;letter-spacing:-.4px;line-height:1.25}
.tool-head p{color:var(--txt-2);font-size:13px;margin-top:3px;max-width:70ch}

/* ---------- cards ---------- */
.grid2{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:18px;align-items:start}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.card-h{
  display:flex;align-items:center;gap:10px;padding:13px 16px;
  border-bottom:1px solid var(--line);background:var(--panel-2);
}
.card-h h2{font-size:13px;font-weight:700;letter-spacing:.02em}
.card-b{padding:16px}
.result-card{position:sticky;top:74px}
.mini{
  margin-left:auto;border:1px solid var(--line-2);background:var(--panel);
  color:var(--txt-2);border-radius:7px;padding:4px 9px;font-size:11.5px;cursor:pointer;
}
.mini:hover{color:var(--accent);border-color:var(--accent-2)}

/* ---------- fields ---------- */
.fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(178px,1fr));gap:13px}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field.full{grid-column:1/-1}
.field label{font-size:11.5px;font-weight:600;color:var(--txt-2);display:flex;gap:5px;align-items:baseline}
.field .u{color:var(--muted);font-weight:500}
.field input,.field select,.field textarea{
  width:100%;padding:8px 11px;border-radius:9px;border:1px solid var(--line-2);
  background:var(--panel-2);color:var(--txt);font:inherit;font-size:13.5px;outline:none;
  font-variant-numeric:tabular-nums;transition:border-color .15s, box-shadow .15s;
}
.field textarea{font-family:var(--mono);font-size:12.5px;resize:vertical;min-height:84px;line-height:1.5}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent-2);box-shadow:0 0 0 3px var(--accent-soft)}
.field .hint{font-size:10.8px;color:var(--muted);line-height:1.4}
.field-check{grid-column:1/-1;display:flex;align-items:center;gap:8px;font-size:12.8px;color:var(--txt-2)}
.field-check input{width:15px;height:15px;accent-color:var(--accent-2)}
.group-title{
  grid-column:1/-1;font-size:11px;font-weight:700;letter-spacing:.07em;color:var(--muted);
  text-transform:uppercase;padding-top:6px;border-top:1px dashed var(--line-2);margin-top:2px;
}
.group-title.first{border-top:0;padding-top:0;margin-top:0}

/* 입력 카드 최상단 — 제품·조건 저장 바 */
.profile-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  padding:9px 11px;margin-bottom:16px;
  background:var(--panel-2);border:1px solid var(--line);border-radius:11px;
}
.profile-bar select{
  flex:1 1 150px;min-width:0;padding:6px 9px;border-radius:8px;
  border:1px solid var(--line-2);background:var(--panel);color:var(--txt);
  font:inherit;font-size:12.5px;outline:none;
}
.profile-bar input{
  flex:1 1 120px;min-width:0;padding:6px 9px;border-radius:8px;
  border:1px solid var(--line-2);background:var(--panel);color:var(--txt);
  font:inherit;font-size:12.5px;outline:none;
}
.profile-bar select:focus,.profile-bar input:focus{
  border-color:var(--accent-2);box-shadow:0 0 0 3px var(--accent-soft);
}
.profile-bar .mini{margin-left:0;flex:0 0 auto}
#profSave{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 35%, var(--line-2));font-weight:600}
#profDel:hover{color:var(--bad);border-color:var(--bad)}

.presets{display:flex;flex-wrap:wrap;gap:6px;margin-left:auto;justify-content:flex-end}
.preset{
  border:1px solid var(--line-2);background:var(--panel);color:var(--txt-2);
  border-radius:999px;padding:3px 10px;font-size:11.5px;cursor:pointer;white-space:nowrap;
}
.preset:hover{border-color:var(--accent-2);color:var(--accent);background:var(--accent-soft)}

/* ---------- results ---------- */
.kpi{display:grid;grid-template-columns:repeat(auto-fit,minmax(142px,1fr));gap:10px;margin-bottom:14px}
.kpi-i{
  background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:11px 12px;min-width:0;
}
.kpi-i.good{background:var(--good-soft);border-color:color-mix(in srgb,var(--good) 28%, transparent)}
.kpi-i.warn{background:var(--warn-soft);border-color:color-mix(in srgb,var(--warn) 32%, transparent)}
.kpi-i.bad{background:var(--bad-soft);border-color:color-mix(in srgb,var(--bad) 30%, transparent)}
.kpi-i.hero{background:linear-gradient(135deg,var(--accent-soft),transparent 120%);border-color:color-mix(in srgb,var(--accent) 24%, transparent)}
.kpi-l{font-size:11px;color:var(--muted);font-weight:600;margin-bottom:2px}
.kpi-v{font-size:21px;font-weight:700;letter-spacing:-.5px;font-variant-numeric:tabular-nums;word-break:break-all;line-height:1.2}
.kpi-i.hero .kpi-v{color:var(--accent)}
.kpi-i.good .kpi-v{color:var(--good)}
.kpi-i.warn .kpi-v{color:var(--warn)}
.kpi-i.bad .kpi-v{color:var(--bad)}
.kpi-u{font-size:11.5px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}
.kpi-s{font-size:10.8px;color:var(--muted);margin-top:3px}

.rows{display:flex;flex-direction:column}
.row{
  display:flex;align-items:baseline;gap:10px;padding:7px 2px;
  border-bottom:1px dashed var(--line);font-size:13px;
}
.row:last-child{border-bottom:0}
.row-l{color:var(--txt-2);flex:1;min-width:0}
.row-r{text-align:right}
.row-v{font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap}
.row-v i{font-style:normal;font-weight:500;color:var(--muted);font-size:11.5px;margin-left:3px}
.row-h{font-size:10.8px;color:var(--muted);font-weight:400;display:block}
.row-sec{
  font-size:10.5px;font-weight:700;letter-spacing:.08em;color:var(--muted);
  text-transform:uppercase;padding:14px 2px 5px;
}
.row-sec.first{padding-top:2px}

.note{
  margin-top:13px;padding:10px 12px;border-radius:10px;font-size:12.2px;line-height:1.55;
  background:var(--panel-3);color:var(--txt-2);border:1px solid var(--line);
}
.note.warn{background:var(--warn-soft);border-color:color-mix(in srgb,var(--warn) 30%,transparent);color:var(--warn)}
.note.bad{background:var(--bad-soft);border-color:color-mix(in srgb,var(--bad) 30%,transparent);color:var(--bad)}
.empty{color:var(--muted);font-size:13px;padding:26px 4px;text-align:center}

/* formula card */
.formula-card{margin-top:18px}
details.formula{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);box-shadow:var(--shadow)}
details.formula>summary{
  padding:13px 16px;cursor:pointer;font-size:13px;font-weight:700;list-style:none;
  display:flex;align-items:center;gap:8px;
}
details.formula>summary::-webkit-details-marker{display:none}
details.formula>summary::before{content:'\25B8';color:var(--muted);transition:transform .15s}
details.formula[open]>summary::before{transform:rotate(90deg)}
.formula-b{padding:0 16px 16px;border-top:1px solid var(--line);padding-top:14px}
.formula-b ul{margin:0;padding-left:18px}
.formula-b li{font-family:var(--mono);font-size:12.3px;color:var(--txt-2);margin:6px 0;line-height:1.6;word-break:break-word}
.formula-b .ref{margin-top:12px;font-size:11.5px;color:var(--muted);font-family:var(--font);line-height:1.6}

/* ---------- 웨이퍼 맵 (페이지 상단) ---------- */
#topArea:not(:empty){margin-bottom:18px}
.map-card .card-h{flex-wrap:wrap}
.map-meta{font-size:11.5px;color:var(--muted);font-variant-numeric:tabular-nums;margin-left:auto}

/* 맵 툴바 */
.map-tools{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  padding-bottom:14px;margin-bottom:16px;border-bottom:1px solid var(--line);
}
.map-tools .mini{margin-left:0}
.tool-lab{font-size:11px;color:var(--muted);font-weight:600;margin-right:2px}
.tool-sp{flex:1 1 0;min-width:0}
.map-tools .seg button{padding:5px 12px}
.map-body{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:20px;align-items:start}
@media (max-width:900px){ .map-body{grid-template-columns:minmax(0,1fr)} }

.map-wrap{display:flex;flex-direction:column;align-items:center;gap:7px}
#waferMap{
  width:100%;max-width:300px;height:auto;aspect-ratio:1;border-radius:50%;
  background:var(--panel-2);cursor:crosshair;touch-action:manipulation;
}
.map-cap{font-size:11px;color:var(--muted);text-align:center;line-height:1.5}

/* 선택한 칩 목록 */
.sel-empty{
  color:var(--muted);font-size:12.5px;line-height:1.6;padding:18px 14px;text-align:center;
  border:1px dashed var(--line-2);border-radius:12px;background:var(--panel-2);
}
.sel-head{
  display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;
  font-size:12.5px;color:var(--txt-2);margin-bottom:8px;
}
.sel-head strong{color:var(--accent);font-size:14px}
.sel-sub{font-size:10.8px;color:var(--muted);margin-left:5px;font-weight:400}
.sel-note{font-size:10.8px;color:var(--muted);margin-top:8px;line-height:1.5}
.sel-scroll{max-height:430px;overflow:auto}
.sel-scroll thead th{
  position:sticky;top:0;z-index:1;background:var(--panel);
  box-shadow:inset 0 -1px 0 var(--line-2);
}
table.sel-tbl{font-size:12px}
table.sel-tbl th,table.sel-tbl td{padding:5px 8px;white-space:nowrap}
table.sel-tbl td.sel-n{
  font-weight:700;color:var(--accent);text-align:left;
  font-variant-numeric:tabular-nums;
}
table.sel-tbl td:nth-child(-n+5),table.sel-tbl th:nth-child(-n+5){text-align:left}
table.sel-tbl tr.r-part td{background:color-mix(in srgb,var(--bad) 8%, transparent)}
table.sel-tbl tr.r-part td.sel-n{color:var(--bad)}
.tag-good,.tag-part{
  display:inline-block;font-size:10px;font-weight:700;letter-spacing:.02em;
  padding:1px 6px;border-radius:999px;
}
.tag-good{color:var(--good);background:var(--good-soft)}
.tag-part{color:var(--bad);background:var(--bad-soft)}
.sel-x{
  border:1px solid var(--line-2);background:var(--panel);color:var(--muted);
  width:19px;height:19px;line-height:1;border-radius:5px;cursor:pointer;
  font-size:13px;padding:0;
}
.sel-x:hover{color:var(--bad);border-color:var(--bad)}

/* charts */
.bars{display:block;width:100%;height:auto;margin-top:12px;overflow:visible}
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.conv{width:100%;border-collapse:collapse;font-size:13px}
table.conv th,table.conv td{padding:7px 10px;border-bottom:1px dashed var(--line);text-align:right;white-space:nowrap}
table.conv th{font-size:11px;color:var(--muted);font-weight:600}
table.conv td:first-child,table.conv th:first-child{text-align:left}
table.conv td.val{font-weight:600;font-variant-numeric:tabular-nums}
table.conv tr.hi td{background:var(--accent-soft);color:var(--accent)}

/* ---------- scientific calculator ---------- */
.calc{display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
.calc-screen{
  background:var(--panel-2);border:1px solid var(--line-2);border-radius:12px;padding:12px 14px;
}
.calc-in{
  width:100%;border:0;background:transparent;color:var(--txt);outline:none;
  font-family:var(--mono);font-size:19px;text-align:right;padding:2px 0;
}
.calc-out{text-align:right;font-family:var(--mono);font-size:14px;color:var(--muted);min-height:20px;margin-top:4px;word-break:break-all}
.calc-out.err{color:var(--bad);font-size:12px}
.calc-bar{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-bottom:2px}
.seg{display:inline-flex;border:1px solid var(--line-2);border-radius:8px;overflow:hidden}
.seg button{border:0;background:var(--panel);padding:4px 11px;font-size:11.5px;cursor:pointer;color:var(--txt-2)}
.seg button.on{background:var(--accent);color:#fff}
.pad{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}
.pad button{
  padding:11px 4px;border-radius:10px;border:1px solid var(--line);background:var(--panel-2);
  cursor:pointer;font-size:14px;font-weight:600;transition:transform .05s, background .12s;
  font-variant-numeric:tabular-nums;
}
.pad button:hover{background:var(--panel-3)}
.pad button:active{transform:scale(.96)}
.pad button.fn{font-size:12px;font-weight:500;color:var(--accent);background:var(--panel)}
.pad button.op{color:var(--accent);font-size:15px}
.pad button.eq{background:var(--accent);color:#fff;border-color:var(--accent)}
.pad button.del{color:var(--bad)}
/* 계산기 + 항상 우측에 붙는 이력 패널 */
.calc-grid{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(230px,330px);
  gap:18px;align-items:start;
}
.calc-log{
  position:sticky;top:74px;align-self:start;
  display:flex;flex-direction:column;max-height:calc(100vh - 96px);
}
.calc-log .card-b{flex:1;min-height:0;display:flex;flex-direction:column}
.calc-log .hist{flex:1;min-height:120px;max-height:none}

.hist{display:flex;flex-direction:column;gap:4px;max-height:230px;overflow-y:auto}
.hist-i{
  display:flex;flex-direction:column;padding:7px 10px;border-radius:9px;background:var(--panel-2);
  border:1px solid var(--line);cursor:pointer;font-family:var(--mono);font-size:12px;
}
.hist-i:hover{border-color:var(--accent-2)}
.hist-e{color:var(--muted);font-size:11.5px;word-break:break-all}
.hist-r{font-weight:700;text-align:right;font-size:13.5px}
.consts{display:flex;flex-wrap:wrap;gap:6px}
.consts button{
  border:1px solid var(--line-2);background:var(--panel-2);border-radius:999px;
  padding:4px 10px;font-size:11.5px;cursor:pointer;font-family:var(--mono);color:var(--txt-2);
}
.consts button:hover{border-color:var(--accent-2);color:var(--accent)}

/* toast */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(12px);
  background:var(--txt);color:var(--bg);padding:9px 16px;border-radius:999px;font-size:12.5px;
  opacity:0;pointer-events:none;transition:opacity .2s, transform .2s;z-index:60;box-shadow:var(--shadow);
}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .grid2{grid-template-columns:minmax(0,1fr)}
  .result-card{position:static}
}
/* 이력 패널을 접는 구간:
   - 861~940px : 사이드바(272px)가 보여 본문이 좁아지는 구간
   - ~660px    : 사이드바가 숨겨져도 두 단이 안 들어가는 구간 */
@media (min-width:861px) and (max-width:940px){
  .calc-grid{grid-template-columns:minmax(0,1fr)}
  .calc-log{position:static;max-height:none}
  .calc-log .hist{max-height:240px;min-height:0}
}
@media (max-width:660px){
  .calc-grid{grid-template-columns:minmax(0,1fr)}
  .calc-log{position:static;max-height:none}
  .calc-log .hist{max-height:240px;min-height:0}
}
@media (max-width:860px){
  .app{grid-template-columns:minmax(0,1fr)}
  .sidebar{
    position:fixed;left:0;top:0;bottom:0;width:284px;transform:translateX(-102%);
    transition:transform .22s ease;box-shadow:var(--shadow);
  }
  .app.open .sidebar{transform:none}
  .only-mobile{display:inline-block}
  .view{padding:16px}
  .topbar{padding-left:14px;padding-right:14px}
  .foot{padding-left:16px;padding-right:16px}
}
@media (max-width:860px){
  /* 좁은 화면에서는 웨이퍼를 아래쪽으로 내려 본문과 겹치지 않게 */
  body::before{right:-20vw;top:auto;bottom:3vh;width:min(44vh,330px)}
}
@media (max-width:420px){
  body::before{opacity:calc(var(--wafer-op) * .7)}
  .fields{grid-template-columns:minmax(0,1fr)}
  .kpi{grid-template-columns:repeat(auto-fit,minmax(126px,1fr))}
  .pad{gap:5px}
  .pad button{padding:10px 2px;font-size:13px}
}
@media print{
  body::before,body::after{display:none}
  .sidebar,.topbar,.presets,.mini,.foot{display:none!important}
  .app{grid-template-columns:1fr}
  .card{box-shadow:none;break-inside:avoid}
}

/* ---------- Wafer_calc 전용 ---------- */
.wafer-cv{
  width:100%;max-width:320px;height:auto;aspect-ratio:1;border-radius:50%;
  background:var(--panel-2);
}
.bow-wrap{display:flex;flex-direction:column;align-items:center;gap:9px}
.bow-cv{
  width:100%;max-width:640px;height:auto;aspect-ratio:900/420;
  border-radius:var(--radius-s);background:var(--panel-2);
}

/* 존 / 면적 구성 범례 */
.zone-list{display:flex;flex-direction:column;gap:0}
.zone-head{
  font-size:11px;font-weight:700;color:var(--muted);letter-spacing:.02em;
  padding-bottom:8px;border-bottom:1px solid var(--line);margin-bottom:4px;
}
.zone-row{
  display:grid;grid-template-columns:16px minmax(0,1fr) auto auto;
  align-items:center;gap:10px;padding:7px 2px;font-size:12.5px;
  border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums;
}
.zone-row:last-child{border-bottom:0}
.zone-sw{
  width:14px;height:14px;border-radius:4px;background:var(--accent);
  border:1px solid color-mix(in srgb,var(--txt) 14%, transparent);
}
.zone-sw.warn{background:var(--warn)}
.zone-sw.mute{background:var(--muted)}
.zone-nm{color:var(--txt);font-weight:600}
.zone-rg{color:var(--muted);font-size:11.5px}
.zone-ct{color:var(--txt-2);font-weight:600;min-width:46px;text-align:right}

/* 노광 샷 목록 */
.shot-wrap{
  max-height:520px;overflow:auto;
  border:1px solid var(--line);border-radius:var(--radius-s);background:var(--panel-2);
}
.shot-tbl{width:100%;border-collapse:collapse;font-size:12px;font-variant-numeric:tabular-nums}
.shot-tbl thead th{
  position:sticky;top:0;z-index:1;background:var(--panel-3);
  padding:8px 10px;text-align:right;white-space:nowrap;
  font-size:11px;font-weight:700;color:var(--muted);
  border-bottom:1px solid var(--line-2);
}
.shot-tbl td{
  padding:6px 10px;text-align:right;white-space:nowrap;
  color:var(--txt);border-bottom:1px solid var(--line);
}
.shot-tbl th:first-child,.shot-tbl th:nth-child(2),
.shot-tbl td:first-child,.shot-tbl td:nth-child(2){text-align:left}
.shot-tbl th:last-child,.shot-tbl td:last-child{text-align:center}
.shot-tbl tbody tr:last-child td{border-bottom:0}
.shot-tbl tbody tr:hover td{background:var(--panel-3)}
.shot-tbl td.dim{color:var(--muted)}
.shot-tbl td.em{font-weight:700}
.shot-badge{
  display:inline-block;padding:1px 8px;border-radius:999px;
  font-size:10.5px;font-weight:700;letter-spacing:.02em;
}
.shot-badge.full{background:var(--accent-soft);color:var(--accent)}
.shot-badge.partial{background:var(--warn-soft);color:var(--warn)}