/*!
 * wpv-core — Wärmepumpen-Rechner (standard + PV)
 * Extracted verbatim from the verified heizlast-rechner.html / heizlast-rechner-pv.html.
 * Scoped under .wpv-calc so it stays theme-independent and does not collide with the theme.
 * Logic and visual design unchanged.
 */

.wpv-calc {
  --fg: #16323f;
  --muted: #50697a;
  --line: rgba(255, 255, 255, .55);
  --glass: rgba(255, 255, 255, .42);
  --glass-strong: rgba(255, 255, 255, .74);
  --field-bg: rgba(255, 255, 255, .92);
  --accent-a: #2f7fd6;
  --accent-b: #d3722b;
  --accent: #2f7fd6;
  /* Darker accent for small text (eyebrow, slider value) on light backgrounds (>=4.5:1). */
  --accent-text: #1f5fa8;
  --ok: #1f9d72;
  --ok-text: #157a52;
  --warn: #c9821a;
  --warn-text: #8a5a12;
  --bad: #d24a3f;
  --bad-text: #bb2d22;
  --sun: #e8a32a;
  --sun-text: #8a5a12;
  --btn: linear-gradient(135deg, #2563c9, #1f6fae);
  --radius: 22px;
  --maxw: 820px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  font-family: var(--font);
  line-height: 1.5;
}

.wpv-calc * { box-sizing: border-box; }
.wpv-calc [hidden] { display: none !important; }

@media (prefers-color-scheme: dark) {
  .wpv-calc {
    --fg: #eaf2f7;
    --muted: #a7bcc8;
    --line: rgba(255, 255, 255, .14);
    --glass: rgba(22, 38, 48, .5);
    --glass-strong: rgba(22, 38, 48, .72);
    --field-bg: rgba(13, 24, 31, .78);
    --accent-a: #6db1f2;
    --accent-b: #f0a35a;
    --accent: #6db1f2;
    --accent-text: #6db1f2;
    --ok-text: #34c58c;
    --warn-text: #e0a44a;
    --bad-text: #f0685c;
    --sun: #f0b84a;
    --sun-text: #f0b84a;
    --btn: linear-gradient(135deg, #3b82f6, #2f7fd6);
  }
}

.wpv-calc .wpv { max-width: var(--maxw); margin: 0 auto; padding: clamp(18px, 4vw, 40px); }
.wpv-calc .head { text-align: center; margin-bottom: clamp(20px, 4vw, 34px); }
.wpv-calc .eyebrow { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; color: var(--accent-text); }
.wpv-calc .calc-title { font-size: clamp(1.7rem, 5vw, 2.6rem); margin: .2em 0 .25em; letter-spacing: -.01em; line-height: 1.1; }
.wpv-calc .calc-title .grad { background: linear-gradient(90deg, var(--accent-a), var(--accent-b)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.wpv-calc .lead { color: var(--muted); margin: 0 auto; max-width: 54ch; }

.wpv-calc form { display: grid; gap: 1.1rem; }
.wpv-calc .card {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1rem, 3vw, 1.5rem);
  -webkit-backdrop-filter: blur(18px) saturate(140%); backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 10px 30px -12px rgba(40, 70, 110, .28), inset 0 1px 0 rgba(255, 255, 255, .45);
}
@media (prefers-reduced-transparency: reduce) {
  .wpv-calc .card { background: var(--glass-strong); -webkit-backdrop-filter: none; backdrop-filter: none; }
}
.wpv-calc fieldset { border: 0; padding: 0; margin: 0; }
/* Legende aus der Rahmen-Notch herausnehmen (Safari/Firefox): floaten + Clearfix,
   damit der Titel sauber im Kartenkopf sitzt statt auf der oberen Kante. */
.wpv-calc fieldset.card::after { content: ""; display: block; clear: both; }
.wpv-calc legend { float: left; width: 100%; font-weight: 700; font-size: 1.05rem; padding: 0; margin: 0 0 .9rem; display: flex; align-items: center; gap: .5rem; }
/* Inhalt unter die gefloatete Legende zwingen (sonst stellen sich Grid/Flex daneben) */
.wpv-calc legend + * { clear: both; }
.wpv-calc legend .dot { width: 8px; height: 8px; border-radius: 50%; background: linear-gradient(135deg, var(--accent-a), var(--accent-b)); }
.wpv-calc legend .dot.sun { background: var(--sun); }

.wpv-calc .field { display: grid; gap: .35rem; margin-top: .9rem; }
.wpv-calc label { font-weight: 600; }
.wpv-calc .hint { color: var(--muted); font-size: .85rem; }
.wpv-calc input:not([type="checkbox"]):not([type="radio"]):not([type="range"]),
.wpv-calc select {
  font: inherit; color: inherit; background: var(--field-bg);
  border: 1px solid rgba(120, 140, 160, .4); border-radius: 12px; padding: .65rem .8rem; width: 100%; min-height: 46px;
}
.wpv-calc .legend-opt { font-weight: 500; font-size: .78rem; color: var(--muted); }
.wpv-calc .sliders { display: grid; gap: 1.1rem; margin-top: .9rem; }
.wpv-calc .slider label { display: flex; justify-content: space-between; gap: 1rem; font-weight: 600; }
.wpv-calc .slider b { color: var(--accent-text); font-variant-numeric: tabular-nums; white-space: nowrap; }
.wpv-calc input[type="range"] { width: 100%; accent-color: var(--accent); min-height: 28px; margin: .3rem 0 0; cursor: pointer; }
.wpv-calc input[type="range"]:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.wpv-calc input:focus-visible, .wpv-calc select:focus-visible, .wpv-calc button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.wpv-calc .row { display: grid; gap: .9rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 540px) { .wpv-calc .row { grid-template-columns: 1fr; } }

.wpv-calc .seg { display: inline-flex; background: var(--field-bg); border: 1px solid rgba(120, 140, 160, .4); border-radius: 999px; padding: 3px; gap: 2px; }
.wpv-calc .seg label { position: relative; }
.wpv-calc .seg input { position: absolute; opacity: 0; pointer-events: none; }
.wpv-calc .seg span { display: flex; align-items: center; min-height: 40px; padding: .4rem 1.1rem; border-radius: 999px; cursor: pointer; font-weight: 600; color: var(--muted); }
.wpv-calc .seg input:checked + span { background: var(--btn); color: #fff; box-shadow: 0 6px 16px -6px rgba(31, 90, 160, .6); }
.wpv-calc .seg input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 2px; }

.wpv-calc .field input[type="checkbox"] { width: 22px; height: 22px; accent-color: var(--accent); }
.wpv-calc .check { display: flex; align-items: center; gap: .55rem; font-weight: 600; cursor: pointer; }

.wpv-calc .submit { display: flex; justify-content: center; margin-top: .3rem; }
.wpv-calc button.primary { font: inherit; font-weight: 700; cursor: pointer; color: #fff; border: 0; border-radius: 999px; padding: .9rem 1.8rem; min-height: 52px; font-size: 1.05rem; background: var(--btn); box-shadow: 0 14px 34px -12px rgba(31, 90, 160, .7); }
.wpv-calc button.primary:hover { filter: brightness(1.06); }

.wpv-calc .result { margin-top: 1.2rem; scroll-margin-top: 1rem; }
.wpv-calc .result .big { display: flex; flex-wrap: wrap; gap: 1.2rem 2rem; align-items: center; justify-content: space-between; }
.wpv-calc .result .power .num { font-size: clamp(2.4rem, 9vw, 3.6rem); font-weight: 800; line-height: 1; background: linear-gradient(135deg, var(--accent-a), var(--accent-b)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.wpv-calc .result .power .cap { color: var(--muted); font-weight: 600; }

.wpv-calc .kpis { display: grid; gap: .7rem; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); margin: 1.2rem 0 0; padding: 0; list-style: none; }
.wpv-calc .kpis li { background: var(--glass-strong); border: 1px solid var(--line); border-radius: 14px; padding: .8rem .9rem; }
.wpv-calc .kpis .k { font-size: .78rem; color: var(--muted); font-weight: 600; }
.wpv-calc .kpis .v { font-weight: 700; font-size: 1.25rem; margin-top: .15rem; }
.wpv-calc .kpis .v small { font-size: .8rem; font-weight: 600; color: var(--muted); }
.wpv-calc .kpis li.save { background: linear-gradient(135deg, rgba(31, 157, 114, .16), rgba(31, 157, 114, .06)); border-color: rgba(31, 157, 114, .3); }
.wpv-calc .kpis li.save .v { color: var(--ok-text); }
.wpv-calc .kpis li.save.neg { background: linear-gradient(135deg, rgba(210, 74, 63, .16), rgba(210, 74, 63, .05)); border-color: rgba(210, 74, 63, .32); }
.wpv-calc .kpis li.save.neg .v { color: var(--bad-text); }
.wpv-calc .kpis li.pv { background: linear-gradient(135deg, rgba(232, 163, 42, .16), rgba(232, 163, 42, .05)); border-color: rgba(232, 163, 42, .32); }
.wpv-calc .kpis li.pv .v { color: var(--sun-text); }

.wpv-calc .badge { display: inline-flex; align-items: center; gap: .4rem; font-size: .92rem; font-weight: 700; padding: .4rem .8rem; border-radius: 999px; }
.wpv-calc .badge.ok { background: rgba(31, 157, 114, .16); color: var(--ok-text); }
.wpv-calc .badge.warn { background: rgba(201, 130, 26, .2); color: var(--warn-text); }
.wpv-calc .badge.bad { background: rgba(210, 74, 63, .16); color: var(--bad-text); }

.wpv-calc .winter { margin-top: 1rem; background: rgba(232, 163, 42, .12); border: 1px solid rgba(232, 163, 42, .34); border-radius: 14px; padding: .8rem 1rem; font-size: .88rem; color: var(--fg); display: flex; gap: .6rem; }

.wpv-calc .notes { margin: 1.2rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: .9rem; display: grid; gap: .3rem; }
.wpv-calc .cta { margin-top: 1.3rem; }
.wpv-calc .disclaimer { color: var(--muted); font-size: .78rem; margin: 1rem 0 0; }
.wpv-calc details { margin-top: .6rem; }
.wpv-calc summary { cursor: pointer; color: var(--muted); font-size: .85rem; font-weight: 600; }