/* ===== Dehumidifier Selection — interface styles ===== */
:root{
  --bg:#f4f6f8; --surface:#ffffff; --ink:#16202b; --ink-2:#5b6b7c; --ink-3:#8b9aab;
  --line:#e0e6ec; --line-2:#eef2f5;
  --accent:#0b6b7f; --accent-2:#0e8ba3; --accent-soft:#e5f2f5;
  --good:#1e7a4c; --warn:#a8630a; --bad:#b3261e;
  --radius:10px; --shadow:0 1px 2px rgba(16,32,48,.06),0 4px 16px rgba(16,32,48,.06);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg); color:var(--ink); -webkit-font-smoothing:antialiased;
}
h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.01em}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
small{font-weight:400;color:var(--ink-3);font-size:12px}

/* ---------- auth pages ---------- */
.auth-body{display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:linear-gradient(160deg,#0b6b7f 0%,#0a4757 55%,#08303b 100%);padding:24px}
.auth-card{background:var(--surface);padding:32px;border-radius:14px;max-width:400px;width:100%;
  box-shadow:0 20px 60px rgba(0,0,0,.28)}
.auth-card h1{font-size:20px;margin-bottom:4px}
.auth-card form{margin-top:18px;display:grid;gap:14px}
.brand-mark{width:44px;height:44px;border-radius:11px;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-weight:700;letter-spacing:.5px;margin-bottom:14px}
.brand-mark.sm{width:26px;height:26px;border-radius:7px;font-size:11px;margin:0}
.center{text-align:center}
.muted{color:var(--ink-2)}
.hint{color:var(--ink-3);font-size:12px;margin:8px 0 0}
.alert{background:#fdecea;color:var(--bad);padding:9px 12px;border-radius:8px;font-size:13px;margin:12px 0}
.note{background:var(--accent-soft);color:#08414f;padding:9px 12px;border-radius:8px;font-size:13px;margin:12px 0}

/* ---------- form controls ---------- */
label{display:block;font-size:12px;color:var(--ink-2);font-weight:500}
label.check{display:flex;align-items:center;gap:8px;font-size:13px;align-self:end;padding-bottom:8px}
label.check input{width:auto;margin:0}
input,select{
  width:100%;margin-top:4px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;
  font:inherit;color:var(--ink);background:#fff;transition:border-color .12s,box-shadow .12s
}
input[type=number]{font-variant-numeric:tabular-nums}
input:focus,select:focus{outline:0;border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(14,139,163,.14)}
input:disabled{background:var(--line-2);color:var(--ink-3)}
.u{color:var(--ink-3);font-weight:400}

.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:8px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font:inherit;font-weight:550;cursor:pointer;transition:.12s;white-space:nowrap}
.btn:hover{border-color:var(--ink-3)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-2);border-color:var(--accent-2)}
.btn.ghost{background:transparent}
.btn.danger{color:var(--bad);border-color:#f0c9c6}
.btn.sm{padding:5px 10px;font-size:12px}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:16px;
  background:var(--surface);border-bottom:1px solid var(--line);padding:10px 18px}
.brand{display:flex;align-items:center;gap:9px;font-weight:650}
.topbar-title{flex:1;color:var(--ink-2);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-actions{display:flex;align-items:center;gap:8px}
.user-chip{font-size:12px;color:var(--ink-2);padding-left:10px;border-left:1px solid var(--line)}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:18px;padding:18px;align-items:start;
  max-width:1500px;margin:0 auto}
.panel-col{display:grid;gap:14px;min-width:0}
.result-col{position:sticky;top:66px}
.result-inner{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow);max-height:calc(100vh - 84px);overflow:auto}

/* ---------- cards ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px 18px;box-shadow:var(--shadow)}
.card h2{font-size:14px;color:var(--accent);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card h3{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-3);
  margin:16px 0 8px;font-weight:650}
.card h3:first-of-type{margin-top:4px}
.grid{display:grid;gap:12px}
.grid+.grid{margin-top:12px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card .toggler{cursor:pointer;justify-content:space-between}
.card .chev{transition:transform .15s;color:var(--ink-3)}
.card.collapsed .collapsible{display:none}
.card.collapsed .chev{transform:rotate(-90deg)}

.unitbar{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:8px 12px;box-shadow:var(--shadow)}
.unitbar-label{font-size:12px;color:var(--ink-3);font-weight:600;text-transform:uppercase;letter-spacing:.06em}
.seg input{display:none}
.seg span{display:inline-block;padding:6px 12px;border-radius:7px;font-size:12px;color:var(--ink-2);cursor:pointer;
  border:1px solid transparent}
.seg input:checked+span{background:var(--accent-soft);color:#08414f;border-color:#bfdde4;font-weight:600}

.statebar{margin-top:12px;padding:9px 12px;background:var(--line-2);border-radius:8px;
  font-size:12px;color:var(--ink-2);font-family:var(--mono)}
.footnote{color:var(--ink-3);font-size:11.5px;margin:0 4px 8px;line-height:1.6}

/* ---------- results ---------- */
.headline{text-align:center;padding:6px 0 14px;border-bottom:1px solid var(--line)}
.headline-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3);font-weight:650}
.headline-value{font-size:34px;font-weight:700;letter-spacing:-.02em;color:var(--accent);margin-top:2px;
  font-variant-numeric:tabular-nums}
.headline-sub{font-size:12px;color:var(--ink-2)}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0}
.kpi{background:var(--line-2);border-radius:8px;padding:8px 9px;text-align:center}
.kpi span{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-3);font-weight:600}
.kpi b{font-size:14px;font-variant-numeric:tabular-nums}

.rec{background:var(--accent-soft);border:1px solid #bfdde4;border-radius:9px;padding:12px;margin-bottom:16px}
.rec-label{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#0a5568;font-weight:700}
.rec-model{font-size:20px;font-weight:700;color:#08414f;letter-spacing:-.01em}
.rec-meta{font-size:12px;color:#0a5568;margin-top:2px}
.rec-alt{font-size:11.5px;color:var(--ink-2);margin-top:8px;border-top:1px solid #cfe4e9;padding-top:7px}
.rec.none{background:#fdecea;border-color:#f3c9c5}
.rec.none .rec-model{color:var(--bad);font-size:15px}

.result-inner h3{font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-3);margin:16px 0 7px}
.tbl{width:100%;border-collapse:collapse;font-size:12.5px}
.tbl th{text-align:right;font-weight:600;color:var(--ink-3);font-size:11px;padding:4px 6px;border-bottom:1px solid var(--line)}
.tbl th:first-child,.tbl td:first-child{text-align:left}
.tbl td{padding:5px 6px;border-bottom:1px solid var(--line-2);text-align:right;font-variant-numeric:tabular-nums}
.tbl tr:last-child td{border-bottom:0}
.tbl .tot td{font-weight:700;border-top:1.5px solid var(--line);border-bottom:0;padding-top:7px}
.tbl.mini td:first-child{color:var(--ink-2)}
.tbl.compact input,.tbl.compact select{margin:0;padding:5px 7px;font-size:12.5px}
.tbl.compact td{padding:3px 4px}

.note-box{background:#fff8ec;border:1px solid #f0dcbc;border-radius:8px;padding:10px 12px;font-size:12.5px;margin-top:14px}
.note-box b{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--warn)}
.warn{background:#fdecea;border:1px solid #f3c9c5;color:#8c1d18;border-radius:8px;padding:8px 11px;
  font-size:12px;margin-top:10px}
.ok-chip{color:var(--good)}
.hidden{display:none!important}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;background:rgba(12,24,34,.45);display:grid;place-items:center;z-index:50;padding:20px}
.modal-card{background:#fff;border-radius:12px;padding:20px;width:min(640px,100%);max-height:80vh;
  display:flex;flex-direction:column;gap:12px;box-shadow:0 24px 70px rgba(0,0,0,.3)}
.proj-list{overflow:auto;border:1px solid var(--line);border-radius:8px}
.proj-row{display:flex;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--line-2);cursor:pointer}
.proj-row:last-child{border-bottom:0}
.proj-row:hover{background:var(--line-2)}
.proj-row .pr-main{flex:1;min-width:0}
.proj-row .pr-title{font-weight:600}
.proj-row .pr-sub{font-size:11.5px;color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.modal-actions{display:flex;justify-content:flex-end;gap:8px}

.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;
  padding:10px 18px;border-radius:9px;font-size:13px;z-index:60;box-shadow:0 8px 30px rgba(0,0,0,.25)}

/* ---------- admin ---------- */
.wrap{max-width:1200px;margin:0 auto;padding:18px}
.tbl.data td,.tbl.data th{text-align:left;padding:7px 8px}
.tbl.data td.num,.tbl.data th.num{text-align:right}
.tabs{display:flex;gap:6px;margin-bottom:14px}
.tabs a{padding:7px 14px;border-radius:8px;font-size:13px;color:var(--ink-2)}
.tabs a.on{background:var(--accent);color:#fff}

/* ---------- print sheet ---------- */
.sheet{background:#fff;max-width:820px;margin:18px auto;padding:34px 38px;box-shadow:var(--shadow);
  border-radius:8px;font-size:12.5px}
.sheet h1{font-size:17px;letter-spacing:.02em}
.sheet h2{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);
  border-bottom:1.5px solid var(--accent);padding-bottom:4px;margin:22px 0 9px}
.sheet .co{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;
  border-bottom:2px solid var(--ink);padding-bottom:12px}
.sheet .co-addr{font-size:10.5px;color:var(--ink-2);max-width:340px;text-align:right;line-height:1.45}
.sheet .meta{display:grid;grid-template-columns:repeat(2,1fr);gap:4px 24px;margin-top:12px;font-size:12px}
.sheet .meta div{display:flex;gap:8px}
.sheet .meta b{min-width:96px;color:var(--ink-2);font-weight:600}
.sheet table{width:100%;border-collapse:collapse;font-size:12px}
.sheet table td,.sheet table th{padding:4px 6px;border-bottom:1px solid var(--line-2);text-align:right}
.sheet table td:first-child,.sheet table th:first-child{text-align:left}
.sheet table th{color:var(--ink-3);font-size:10.5px;text-transform:uppercase;letter-spacing:.04em;
  border-bottom:1px solid var(--line)}
.sheet .grand{background:var(--accent-soft);font-weight:700}
.sheet .sig{margin-top:34px;display:flex;justify-content:space-between;font-size:11.5px;color:var(--ink-2)}
.sheet ol{padding-left:18px;font-size:11.5px;color:var(--ink-2);line-height:1.7}
.printbar{max-width:820px;margin:14px auto 0;display:flex;gap:8px;justify-content:flex-end}

@media print{
  body{background:#fff}
  .printbar,.topbar{display:none!important}
  .sheet{box-shadow:none;margin:0;max-width:none;padding:0;border-radius:0}
  .sheet h2{break-after:avoid}
  table{break-inside:avoid}
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .layout{grid-template-columns:1fr}
  .result-col{position:static}
  .result-inner{max-height:none}
}
@media (max-width:760px){
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .topbar{flex-wrap:wrap;gap:8px}
  .topbar-title{order:3;flex-basis:100%}
  .user-chip{border:0;padding:0}
  .kpis{grid-template-columns:1fr}
}
@media (max-width:460px){ .g2,.g3,.g4{grid-template-columns:1fr} }

/* ===================== tabs ===================== */
.tabbar{position:sticky;top:53px;z-index:25;display:flex;gap:4px;background:var(--surface);
  border-bottom:1px solid var(--line);padding:0 18px}
.tab{background:none;border:0;border-bottom:2px solid transparent;padding:11px 16px;font:inherit;
  font-weight:550;color:var(--ink-2);cursor:pointer;transition:.12s}
.tab:hover{color:var(--ink)}
.tab.on{color:var(--accent);border-bottom-color:var(--accent)}
.view{display:grid;gap:14px}
.layout.no-aside{grid-template-columns:minmax(0,1fr)}
.layout.no-aside .result-col{display:none}
.result-col{top:98px}

/* ===================== print menu ===================== */
.menu-wrap{position:relative}
.menu{position:absolute;right:0;top:calc(100% + 6px);background:#fff;border:1px solid var(--line);
  border-radius:9px;box-shadow:0 8px 30px rgba(16,32,48,.16);padding:5px;min-width:186px;z-index:40}
.menu button{display:block;width:100%;text-align:left;background:none;border:0;padding:8px 12px;
  border-radius:6px;font:inherit;color:var(--ink);cursor:pointer}
.menu button:hover{background:var(--accent-soft)}

/* ===================== flow gallery ===================== */
.flow-fam+.flow-fam{margin-top:18px}
.flow-fam h4{margin:0 0 8px;font-size:11px;text-transform:uppercase;letter-spacing:.07em;
  color:var(--ink-3);font-weight:700}
.flow-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px}
.flow-card{display:flex;flex-direction:column;gap:3px;text-align:left;padding:10px 12px;background:#fff;
  border:1px solid var(--line);border-radius:9px;cursor:pointer;font:inherit;transition:.12s}
.flow-card:hover{border-color:var(--accent-2);background:#fbfdfe}
.flow-card.on{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent)}
.fc-name{font-weight:650;font-size:13px;color:var(--ink)}
.fc-desc{font-size:11.5px;color:var(--ink-2);line-height:1.45}
.fc-org{font-size:10px;color:var(--ink-3);font-family:var(--mono)}

/* ===================== flow schematic ===================== */
.flow-wrap{overflow-x:auto;background:#fbfcfd;border:1px solid var(--line);border-radius:9px;padding:10px}
.flowsvg{display:block;width:100%;min-width:900px;height:auto}
.flowsvg .fl-box,.flowsvg .fl-space,.flowsvg .fl-mach,.flowsvg .fl-aux,.flowsvg .fl-part{
  fill:#fff;stroke:var(--ink-2);stroke-width:1.3}
.flowsvg .fl-space{fill:#f7fbfc;stroke:var(--accent);stroke-width:1.6}
.flowsvg .fl-mach{fill:#fcfcfd;stroke:var(--ink);stroke-width:1.6}
.flowsvg .fl-aux{fill:#eef4f7}
.flowsvg .fl-hru{fill:#dceef2;stroke:var(--accent);stroke-width:1.2}
.flowsvg .fl-wheel{fill:#e8eef2;stroke:var(--ink-2);stroke-width:1.3}
.flowsvg .fl-wheel-in{fill:#fff;stroke:var(--ink-3);stroke-width:1}
.flowsvg .fl-blower{fill:#dfe8ee;stroke:var(--ink-2);stroke-width:1.2}
.flowsvg .fl-coil{fill:#e6f0f5;stroke:var(--accent);stroke-width:1.3}
.flowsvg .fl-coil-fin{stroke:var(--accent);stroke-width:.9}
.flowsvg .fl-node{fill:var(--ink);stroke:#fff;stroke-width:1.5}
.flowsvg .fl-duct{fill:none;stroke-width:2;marker-end:url(#ar)}
.flowsvg .fl-p{stroke:#0b6b7f}
.flowsvg .fl-r{stroke:#b3261e}
.flowsvg .fl-f{stroke:#1e7a4c}
.flowsvg .fl-b{stroke:#a8630a;stroke-dasharray:7 4}
.flowsvg .fl-s{stroke:#4c4fbf}
.flowsvg .fl-arrow{fill:currentColor}
.flowsvg .fl-p+.fl-arrow{fill:#0b6b7f}
.flowsvg text{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
.flowsvg .fl-t{font-size:10.5px;fill:var(--ink-2)}
.flowsvg .fl-v{font-size:11px;fill:var(--ink);font-weight:650}
.flowsvg .fl-lbl{font-size:9.5px;fill:var(--ink-3);font-weight:700;letter-spacing:.04em}
.flowsvg .fl-h{font-size:11.5px;fill:var(--accent);font-weight:700;letter-spacing:.06em}
.flow-legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px;font-size:11px;color:var(--ink-3)}
.flow-legend span{display:flex;align-items:center;gap:5px}
.flow-legend .lg{width:16px;height:2.5px;border-radius:2px;display:inline-block}
.flow-legend .lg.p{background:#0b6b7f}.flow-legend .lg.r{background:#b3261e}
.flow-legend .lg.f{background:#1e7a4c}.flow-legend .lg.b{background:#a8630a}
.flow-legend .lg.s{background:#4c4fbf}
.tbl .sec td{background:var(--line-2);font-weight:700;font-size:11px;text-transform:uppercase;
  letter-spacing:.05em;color:var(--ink-2);text-align:left;padding-top:8px}

/* ===================== side calculations ===================== */
.sc-out{margin-top:12px;padding:11px 13px;background:var(--accent-soft);border:1px solid #bfdde4;
  border-radius:8px;font-size:13px;color:#08414f;line-height:1.65}
.sc-out b{color:#063540}

@media (max-width:1180px){ .result-col{top:0} }
@media (max-width:760px){ .tabbar{top:0;position:relative;overflow-x:auto} }

/* ===================== printed calculation sheet ===================== */
.sheet table.calcsheet td{vertical-align:top;padding:6px}
.sheet table.calcsheet td.lab{width:26%;font-weight:600;text-align:left}
.sheet table.calcsheet td.wk{text-align:left;color:var(--ink-2);font-size:11px;line-height:1.7}
.sheet table.calcsheet td.wk span{color:var(--ink-3);font-size:10px}
.sheet table.calcsheet td.res{width:20%;text-align:right;font-weight:700;font-variant-numeric:tabular-nums}
.sheet table.calcsheet tr.grand td{background:var(--accent-soft)}
.flow-print{margin:6px 0 4px;border:1px solid var(--line);border-radius:6px;padding:6px;overflow:hidden}
.flow-print .flowsvg{min-width:0;width:100%}
@media print{ .flow-print{border:0;padding:0;break-inside:avoid} }