/* TerraTransfer · Nitrat-Messstation (produkte/nitrat.html und Sprachversionen)
 * Baut auf aquatos-ltx.css auf (ltx-hero, ltx-section, ltx-nav, ltx-form). Hier nur die seitenspezifischen Bausteine.
 * Außerdem der Hinweiskasten .ni-teaser für die Anwendungsseiten Gewässer und Trinkwasser.
 */
.ni-page .ltx-device img{object-fit:cover;height:330px}
.ni-page .ltx-mini-screen img{object-position:center 55%}

/* Problem */
.ni-limits{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.6rem 0 0;padding:0;list-style:none}
.ni-limits li{font-size:.8rem;padding:.35rem .75rem;border:1px solid var(--ltx-border);border-radius:999px;color:var(--ink-700);background:var(--white)}

/* System */
.ni-system{display:grid;grid-template-columns:1fr 1.15fr;gap:3rem;align-items:start}
.ni-steps{list-style:none;margin:0;padding:0;counter-reset:ni}
.ni-steps li{position:relative;padding:1.05rem 0 1.05rem 3.2rem;border-bottom:1px solid var(--ltx-border)}
.ni-steps li:first-child{border-top:1px solid var(--ltx-border)}
.ni-steps li>span{position:absolute;left:0;top:1.1rem;width:2.1rem;height:2.1rem;border-radius:50%;display:grid;place-items:center;font-size:.74rem;font-weight:700;font-family:var(--font-mono);color:var(--ltx-accent);border:1.5px solid var(--ltx-accent);background:var(--white)}
.ni-steps strong{display:block;font-size:1.02rem;color:var(--ink-900);margin-bottom:.2rem}
.ni-steps p{font-size:.93rem;margin:0}
.ni-steps a{font-weight:600;font-size:.86rem;color:var(--brand-700);text-decoration:none;white-space:nowrap}
.ni-steps a:hover{text-decoration:underline}
.ni-photo{border:1px solid var(--ltx-border);border-radius:16px;overflow:hidden;background:#fff;position:sticky;top:calc(var(--ltx-header,72px) + 70px)}
.ni-photo img{display:block;width:100%;height:auto}
.ni-photo figcaption{font-size:.78rem;color:#536474;padding:.9rem 1.2rem}
.ni-extend{margin-top:1.4rem;padding:1rem 1.2rem;border-left:3px solid var(--ltx-accent);background:var(--white);font-size:.92rem;color:var(--ink-700)}

/* Einbau */
.ni-variants{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5rem}
.ni-variant{border:1px solid var(--ltx-border);border-radius:14px;padding:1.6rem;background:var(--white);display:flex;flex-direction:column}
.ni-variant svg{width:100%;height:110px;margin-bottom:1rem;color:var(--ltx-accent)}
.ni-variant svg .w{fill:color-mix(in srgb,var(--ltx-accent) 14%,transparent);stroke:none}
.ni-variant svg .s{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ni-variant svg .f{fill:currentColor}
.ni-variant svg .g{fill:none;stroke:var(--ink-400,#8a97a6);stroke-width:1.5;stroke-dasharray:4 4}
.ni-variant h3{margin-bottom:.5rem}
.ni-variant p{font-size:.93rem}
.ni-variant .ni-for{margin-top:auto;font-size:.8rem;color:var(--ink-500);border-top:1px solid var(--ltx-border);padding-top:.8rem;margin-bottom:0}
.ni-variant .ltx-text-link{font-size:.86rem;margin-bottom:.9rem;display:inline-block}

/* Ganglinie */
.ni-chart-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:2.5rem;align-items:center}
.ni-chart-card{border:1px solid var(--ltx-border);border-radius:16px;background:var(--white);padding:1.2rem 1.2rem .6rem}
.ni-chart{display:block;width:100%;height:auto;font-family:var(--font-sans,inherit)}
.ni-chart .ni-grid{stroke:var(--ink-100);stroke-width:1}
.ni-chart .ni-base{stroke:var(--ink-300);stroke-width:1}
.ni-chart .ni-ax{font-size:11px;fill:var(--ink-500)}
.ni-chart .ni-ax-title{font-size:12px;font-weight:600;fill:var(--ink-700)}
.ni-chart .ni-line{fill:none;stroke:var(--ltx-accent);stroke-width:2.4;stroke-linejoin:round}
.ni-chart .ni-area{fill:color-mix(in srgb,var(--ltx-accent) 12%,transparent)}
.ni-chart .ni-rain{fill:#5b8fc7;opacity:.75}
.ni-chart .ni-thresh{stroke:#c2410c;stroke-width:1.5;stroke-dasharray:6 5}
.ni-chart .ni-alarm{fill:#c2410c;stroke:var(--white);stroke-width:2}
.ni-chart .ni-sample{fill:var(--white);stroke:var(--ink-700);stroke-width:2}
.ni-chart .ni-note{font-size:11.5px;fill:var(--ink-700);font-weight:500}
.ni-chart .ni-note-thresh,.ni-chart .ni-note-alarm{fill:#c2410c;font-weight:600}
.ni-legend{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem;list-style:none;margin:.6rem 0 0;padding:.7rem 0 .2rem;border-top:1px solid var(--ltx-border);font-size:.76rem;color:var(--ink-700)}
.ni-legend i{display:inline-block;width:16px;height:10px;margin-right:.4rem;vertical-align:-1px;border-radius:2px}
.ni-legend .l1{background:var(--ltx-accent);height:3px;vertical-align:2px}
.ni-legend .l2{width:9px;height:9px;border:2px solid var(--ink-700);transform:rotate(45deg);border-radius:0;background:var(--white)}
.ni-legend .l3{border-top:2px dashed #c2410c;height:0;border-radius:0;vertical-align:3px}
.ni-legend .l4{background:#5b8fc7;opacity:.75}
.ni-badge{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:.25rem .6rem;border-radius:999px;background:var(--ink-100);color:var(--ink-700);margin-bottom:.8rem}
.ni-reading{list-style:none;padding:0;margin:1.2rem 0}
.ni-reading li{position:relative;padding:.55rem 0 .55rem 2rem;font-size:.94rem;color:var(--ink-700);border-bottom:1px solid var(--ltx-border)}
.ni-reading li>b{position:absolute;left:0;top:.6rem;font-family:var(--font-mono);font-size:.75rem;color:var(--ltx-accent)}

/* Referenz */
.ni-ref{display:grid;grid-template-columns:.85fr 1.15fr;gap:3rem;align-items:center}
.ni-ref figure{border-radius:16px;overflow:hidden;border:1px solid var(--ltx-border)}
.ni-ref img{display:block;width:100%;height:440px;object-fit:cover;object-position:center 55%}
.ni-ref figcaption{font-size:.76rem;color:var(--ink-500);padding:.7rem 1rem;background:var(--white)}
.ni-ref-facts{display:grid;grid-template-columns:1fr 1fr;gap:0 2rem;margin:1.6rem 0}
.ni-ref-facts div{padding:.8rem 0;border-bottom:1px solid var(--ltx-border)}
.ni-ref-facts dt{font-size:.76rem;color:var(--ink-500);margin-bottom:.15rem}
.ni-ref-facts dd{margin:0;font-weight:600;color:var(--ink-900);font-size:.95rem}

/* 3D */
.ni-3d{display:grid;grid-template-columns:1.1fr .9fr;gap:2.5rem;align-items:center;padding:2.4rem;border-radius:20px;background:linear-gradient(135deg,#0f2a44,#123b4f);color:#fff}
.ni-page .ni-3d h2{color:#fff}
.ni-page .ni-3d p{color:#d5e3ef}
.ni-page .ni-3d .ltx-kicker{color:#8fe0d8}
.ni-3d .btn{background:#fff;color:#0f2a44;border-color:#fff}
.ni-3d .btn:hover{background:#e6f2f5}
.ni-3d-visual{position:relative;display:block;border-radius:14px;overflow:hidden;aspect-ratio:830/565;background:#0b2033;transition:transform .2s}
.ni-3d-visual:hover{transform:translateY(-3px)}
.ni-3d-visual picture,.ni-3d-visual img{display:block;width:100%;height:100%;object-fit:cover}
.ni-3d-visual span{position:absolute;left:1rem;bottom:1rem;font-size:.75rem;font-weight:600;color:#fff;background:rgba(15,42,68,.75);padding:.35rem .7rem;border-radius:999px}
.ni-3d-hint{font-size:.78rem;margin-top:.9rem}

/* FAQ */
.ni-faq details{border-bottom:1px solid var(--ltx-border)}
.ni-faq details:first-of-type{border-top:1px solid var(--ltx-border)}
.ni-faq summary{cursor:pointer;padding:1.1rem 0;font-weight:600;color:var(--ink-900)}
.ni-faq details p{max-width:46rem}

/* Hinweiskasten auf Anwendungsseiten */
.ni-teaser{display:grid;grid-template-columns:240px 1fr auto;gap:1.6rem;align-items:center;padding:1.2rem;border:1px solid var(--ink-200);border-radius:16px;background:var(--white)}
.ni-teaser img{width:100%;height:150px;object-fit:cover;border-radius:10px;display:block}
.ni-teaser .eyebrow{margin-bottom:.3rem}
.ni-teaser h3{margin:.2rem 0 .4rem;font-size:1.25rem}
.ni-teaser p{margin:0;color:var(--ink-700);font-size:.95rem}
.ni-teaser .btn{white-space:nowrap}

[data-theme="dark"] .ni-variant,[data-theme="dark"] .ni-chart-card,[data-theme="dark"] .ni-extend,[data-theme="dark"] .ni-limits li,[data-theme="dark"] .ni-ref figcaption,[data-theme="dark"] .ni-teaser{background:#14243a}
[data-theme="dark"] .ni-steps li>span{background:#14243a}
[data-theme="dark"] .ni-chart .ni-grid{stroke:#24364d}
[data-theme="dark"] .ni-chart .ni-ax,[data-theme="dark"] .ni-chart .ni-note{fill:#b8c6d6}
[data-theme="dark"] .ni-chart .ni-ax-title{fill:#dbe6f0}
[data-theme="dark"] .ni-chart .ni-sample,[data-theme="dark"] .ni-legend .l2{fill:#14243a;background:#14243a;stroke:#dbe6f0;border-color:#dbe6f0}
[data-theme="dark"] .ni-chart .ni-alarm{stroke:#14243a}
[data-theme="dark"] .ni-chart .ni-thresh,[data-theme="dark"] .ni-legend .l3{stroke:#fb923c;border-top-color:#fb923c}
[data-theme="dark"] .ni-chart .ni-alarm{fill:#fb923c}
[data-theme="dark"] .ni-chart .ni-note-thresh,[data-theme="dark"] .ni-chart .ni-note-alarm{fill:#fb923c}
[data-theme="dark"] .ni-steps a{color:#a6c8e8}
[data-theme="dark"] .ni-badge{background:#24364d;color:#dbe6f0}

[data-contrast="high"] .ni-3d{background:#fff;color:#000;border:2px solid #000}
[data-contrast="high"] .ni-page .ni-3d :is(h2,p,.ltx-kicker){color:#000}
[data-contrast="high"] .ni-3d .btn{background:#000!important;color:#fff!important}
[data-contrast="high"] .ni-chart .ni-line,[data-contrast="high"] .ni-chart .ni-thresh{stroke:#000}
[data-contrast="high"] .ni-chart .ni-area{fill:none}
[data-contrast="high"] .ni-chart :is(.ni-ax,.ni-note){fill:#000}
[data-contrast="high"] .ni-chart .ni-rain,[data-contrast="high"] .ni-chart .ni-alarm{fill:#000}
[data-contrast="high"] :is(.ni-variant,.ni-chart-card,.ni-teaser,.ni-extend){background:#fff;border-color:#000}

@media(max-width:1000px){
  .ni-system,.ni-chart-grid,.ni-ref,.ni-3d{grid-template-columns:1fr;gap:1.8rem}
  .ni-photo{position:static}
  .ni-variants{grid-template-columns:1fr}
  .ni-ref img{height:320px}
  .ni-teaser{grid-template-columns:1fr}
  .ni-teaser img{height:180px}
}
@media(max-width:560px){
  .ni-3d{padding:1.5rem}
  .ni-ref-facts{grid-template-columns:1fr}
  .ni-chart-card{padding:.7rem .5rem .4rem}
  .ni-page .ltx-device img{height:240px}
}
@media(max-width:560px){.ni-chart-card{overflow-x:auto}.ni-chart{min-width:540px}}
/* 2026-10-27: vier Einbauvarianten (Grundwasserrohr dazu) im 2 x 2 Raster, Messboje als „auf Anfrage“ markiert */
.ni-variants{grid-template-columns:repeat(2,minmax(0,1fr))}
.ni-tag{display:inline-block;vertical-align:middle;margin-left:.5rem;font-size:.68rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:.2rem .55rem;border-radius:999px;background:var(--ink-100);color:var(--ink-700)}
[data-theme="dark"] .ni-tag{background:#24364d;color:#dbe6f0}
@media(max-width:1000px){.ni-variants{grid-template-columns:1fr}}