/* Raumklima-Check – shared design system for all calculator pages.
   The homepage (index.html) keeps its own inline styles; these rules only
   add the shared header/nav + hub components there and fully style the
   secondary tool pages. */
:root{
  --ink:#15242b;
  --mist:#e7eff1;
  --paper:#fcfeff;
  --line:#d3e0e3;
  --teal:#2b8499;
  --teal-deep:#1c5a69;
  --amber:#d98a1f;
  --good:#2c9a6b;
  --bad:#c2504c;
  --muted:#5f767d;
  --shadow:0 1px 2px rgba(21,36,43,.04), 0 8px 28px rgba(21,36,43,.07);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:"Inter",system-ui,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(120% 80% at 80% -10%, #f4f9fa 0%, transparent 55%),
    radial-gradient(120% 90% at -10% 110%, #fdf4e6 0%, transparent 50%),
    var(--mist);
  line-height:1.55;
  min-height:100vh;
  padding:clamp(12px,3vw,28px) clamp(14px,4vw,24px) 64px;
}
.wrap{max-width:760px;margin:0 auto}
a{color:var(--teal-deep)}

/* ---------- shared header / tool nav ---------- */
.site-head{max-width:760px;margin:0 auto clamp(20px,4vw,32px)}
.head-inner{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;justify-content:space-between}
.brand{
  display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);
  font-family:"Bricolage Grotesque",sans-serif;font-weight:800;font-size:18px;letter-spacing:-.01em;
}
.brand-mark{width:22px;height:22px;display:block;flex:none}
.toolnav{display:flex;gap:6px;flex-wrap:wrap}
.toolnav a{
  text-decoration:none;color:var(--muted);font-size:13px;font-weight:600;
  padding:6px 11px;border-radius:999px;border:1px solid transparent;white-space:nowrap;
}
.toolnav a:hover{background:var(--paper);border-color:var(--line);color:var(--ink)}
.toolnav a.active{background:var(--teal);color:#fff}

/* ---------- page header ---------- */
header.page-head{margin-bottom:26px}
.eyebrow{
  font-family:"Space Mono",monospace;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--teal-deep);display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--teal-deep);opacity:.5}
h1{
  font-family:"Bricolage Grotesque",sans-serif;font-weight:800;
  font-size:clamp(30px,6vw,50px);line-height:1;letter-spacing:-.02em;margin-bottom:14px;
}
.lede{font-size:clamp(15px,2.4vw,17px);color:var(--muted);max-width:68ch}
.lede b{color:var(--ink);font-weight:600}

/* ---------- panels / fields ---------- */
.inputs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:26px 0 6px}
.inputs.one{grid-template-columns:1fr}
.panel{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:20px 18px 18px;box-shadow:var(--shadow)}
.panel-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:18px}
.panel-title{font-family:"Bricolage Grotesque",sans-serif;font-weight:700;font-size:19px}
.panel-tag{font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--teal)}
.panel.inside .panel-tag{color:var(--amber)}
.panel.inside{border-top:3px solid var(--amber)}
.panel.outside{border-top:3px solid var(--teal)}

.field{margin-bottom:16px}
.field:last-child{margin-bottom:0}
.field-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:7px}
.field label{font-size:13px;font-weight:500;color:var(--muted)}
.val{font-family:"Space Mono",monospace;font-weight:700;font-size:15px;display:flex;align-items:center;gap:2px}
.val input{
  width:64px;border:1px solid var(--line);border-radius:8px;
  font-family:"Space Mono",monospace;font-weight:700;font-size:15px;color:var(--ink);
  text-align:right;padding:3px 5px;background:#fff;
}
.val .unit{color:var(--muted);font-weight:400;font-size:13px}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:6px;
  background:linear-gradient(90deg,var(--track-fill,var(--teal)) var(--pct,50%),#e3ebed var(--pct,50%));cursor:pointer;
}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:#fff;border:2px solid var(--thumb,var(--teal));box-shadow:0 1px 4px rgba(0,0,0,.18)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#fff;border:2px solid var(--thumb,var(--teal));box-shadow:0 1px 4px rgba(0,0,0,.18)}
.panel.inside input[type=range]{--track-fill:var(--amber);--thumb:var(--amber)}
input:focus-visible{outline:2px solid var(--teal-deep);outline-offset:3px}

/* ---------- verdict ---------- */
.verdict{margin-top:18px;border-radius:20px;padding:24px;color:#fff;box-shadow:var(--shadow);transition:background .45s ease;background:var(--muted)}
.verdict[data-state="go"],.verdict[data-state="good"]{background:linear-gradient(135deg,var(--good),#1f7d54)}
.verdict[data-state="meh"],.verdict[data-state="warn"]{background:linear-gradient(135deg,var(--amber),#b56f12)}
.verdict[data-state="stop"],.verdict[data-state="bad"]{background:linear-gradient(135deg,var(--bad),#9c3a37)}
.verdict-label{font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;opacity:.8;margin-bottom:8px}
.verdict-headline{font-family:"Bricolage Grotesque",sans-serif;font-weight:800;font-size:clamp(24px,5vw,36px);line-height:1.02;letter-spacing:-.015em}
.verdict-sub{margin-top:12px;font-size:15px;max-width:62ch;opacity:.95}
.verdict-sub b{font-weight:600}

/* ---------- readouts ---------- */
.readouts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.readouts.three{grid-template-columns:1fr 1fr 1fr}
.stat{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:15px 16px}
.stat-k{font-size:12px;color:var(--muted);font-weight:500;display:flex;align-items:center;gap:6px}
.stat-v{font-family:"Space Mono",monospace;font-weight:700;font-size:21px;margin-top:5px}
.stat-v small{font-size:13px;color:var(--muted);font-weight:400}
.stat .hint{font-size:12px;color:var(--muted);margin-top:4px;line-height:1.4}
.badge{display:inline-block;font-size:11px;font-family:"Space Mono",monospace;padding:1px 7px;border-radius:20px;margin-left:auto}
.badge.ok{background:#e3f3ec;color:var(--good)}
.badge.risk{background:#f7e3e2;color:var(--bad)}
.badge.warn{background:#faefdc;color:var(--amber)}

/* ---------- segmented chooser (rooms / modes) ---------- */
.seg{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 22px}
.seg button{
  font:inherit;font-size:14px;font-weight:600;cursor:pointer;
  padding:9px 15px;border-radius:999px;border:1px solid var(--line);background:var(--paper);color:var(--muted);
}
.seg button[aria-pressed="true"]{background:var(--teal);border-color:var(--teal);color:#fff}

/* ---------- explainer / footer ---------- */
.why{margin-top:34px}
.why h2{font-family:"Bricolage Grotesque",sans-serif;font-weight:700;font-size:22px;margin-bottom:12px}
.why p{font-size:15px;color:#33474e;margin-bottom:12px;max-width:74ch}
.why p b{color:var(--ink)}
footer{margin-top:36px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;max-width:74ch}
footer a{color:var(--muted)}

/* ---------- hub / tool grid ---------- */
.hub{margin-top:40px}
.hub h2{font-family:"Bricolage Grotesque",sans-serif;font-weight:700;font-size:22px;margin-bottom:16px}
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tool-card{
  display:block;text-decoration:none;background:var(--paper);border:1px solid var(--line);
  border-radius:16px;padding:18px;box-shadow:var(--shadow);transition:transform .15s ease,border-color .15s ease;
}
.tool-card:hover{transform:translateY(-2px);border-color:var(--teal)}
.tool-card h3{font-family:"Bricolage Grotesque",sans-serif;font-weight:700;font-size:17px;color:var(--ink);margin-bottom:4px}
.tool-card p{font-size:13px;color:var(--muted)}

@media (max-width:560px){
  .inputs,.readouts,.readouts.three,.tool-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}