/* Heizungstausch-Rechner (Folge 32).
 *
 * Grundgeruest aus vermieten-rechner.css uebernommen, damit die Werkzeug-Seiten gleich
 * aussehen. Eigenes ab dem Block "HEIZUNGSTAUSCH" unten: Feldgruppen, Einheiten-Wahl,
 * Beispiel-Knopf, die zwei Varianten nebeneinander und der Verlauf als Linien.
 */
.tool-hero { padding: 64px 0 48px; }
.tool-hero .hero-inner { max-width: 760px; position: relative; }
.privacy-badge {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 22px;
  padding: 10px 18px; background: rgba(201, 168, 95, 0.12);
  border: 1px solid rgba(201, 168, 95, 0.35); border-radius: 2px;
  font-size: 14px; color: rgba(244, 236, 220, 0.92);
}
.privacy-badge svg { width: 18px; height: 18px; flex-shrink: 0; }
.privacy-badge strong { color: var(--gold); font-weight: 600; }

/* ---------- Layout ---------- */
.tool-section { padding: 48px 0 88px; }
.rechner-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 28px; align-items: start; }

.panel-card {
  background: #FFFFFF; border: 1px solid var(--border-subtle);
  border-radius: 3px; padding: 28px;
}
.panel-card h2 {
  font-family: 'Newsreader', serif; font-weight: 500; font-size: 21px;
  color: var(--navy); margin-bottom: 22px;
}
.panel-intro { font-size: 14px; color: var(--ink-soft); line-height: 1.6; margin: -12px 0 22px; }

/* ---------- Regler ---------- */
.control { margin-bottom: 24px; }
.control:last-child { margin-bottom: 0; }
.control-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; gap: 12px; }
.control-head label { font-size: 15px; font-weight: 700; color: var(--navy); }
.control-field {
  display: inline-flex; align-items: center; gap: 4px;
  border: 1px solid var(--border-subtle); border-radius: 2px; padding: 6px 10px; background: var(--white-soft);
}
.control-field input {
  font-family: inherit; font-size: 15px; font-weight: 600; color: var(--navy);
  border: none; background: transparent; outline: none; width: 78px; text-align: right;
}
.control-field .unit { font-size: 14px; color: var(--ink-soft); }

input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 6px;
  background: linear-gradient(to right, var(--gold) 0%, var(--gold) var(--fill, 50%), #E5DCC8 var(--fill, 50%), #E5DCC8 100%);
  border-radius: 2px; outline: none; cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--navy); border: 3px solid var(--gold); cursor: pointer;
  transition: transform 140ms var(--ease);
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.12); }
input[type="range"]::-moz-range-thumb {
  width: 22px; height: 22px; border-radius: 50%; background: var(--navy); border: 3px solid var(--gold); cursor: pointer;
}
.control-hint { margin-top: 8px; font-size: 12.5px; color: var(--ink-soft); }

/* ---------- Kostensaetze, aufklappbar ---------- */
.kosten-details {
  margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--border-subtle);
}
.kosten-details > summary {
  cursor: pointer; list-style: none; font-size: 13px; font-weight: 700;
  letter-spacing: 0.04em; color: var(--gold-ink); display: flex; align-items: center; gap: 8px;
}
.kosten-details > summary::-webkit-details-marker { display: none; }
.kosten-details > summary::after {
  content: '+'; margin-left: auto; font-size: 17px; line-height: 1; color: var(--ink-soft);
}
.kosten-details[open] > summary::after { content: '\2212'; }
.kosten-details-hint { font-size: 12.5px; color: var(--ink-soft); margin: 12px 0 18px; line-height: 1.55; }

/* ---------- Ergebnis ---------- */
.kpi-card--hero {
  background: var(--navy); border: 1px solid var(--border-subtle); border-left: 4px solid var(--gold);
  border-radius: 3px; padding: 22px; display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  margin-bottom: 18px;
}
.kpi-label { font-size: 13px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: rgba(244, 236, 220, 0.7); }
.kpi-value { font-family: 'Newsreader', serif; font-weight: 500; font-size: 40px; color: var(--gold); line-height: 1; }
.kpi-sub { font-size: 13px; color: rgba(244, 236, 220, 0.7); line-height: 1.5; }

.zahlen-paar { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.zahl-box { border: 1px solid var(--border-subtle); border-radius: 3px; padding: 16px 18px; background: var(--white-soft); }
.zahl-box .zb-head { font-size: 12.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-soft); }
.zahl-box .zb-wert { font-family: 'Newsreader', serif; font-weight: 500; font-size: 24px; color: var(--navy); margin: 4px 0 2px; line-height: 1; }
.zahl-box .zb-sub { font-size: 12.5px; color: var(--ink-soft); line-height: 1.5; }

/* ---------- Einordnung ---------- */
.einordnung {
  padding: 16px 20px; border-radius: 3px; font-size: 14px; line-height: 1.55;
  border-left: 4px solid var(--gold); background: var(--ivory); color: var(--ink);
}
.einordnung strong { color: var(--navy); }
.einordnung.ist-darueber { border-left-color: #C06A22; }
.einordnung .eo-titel { display: block; font-weight: 700; color: var(--navy); margin-bottom: 4px; }
.einordnung.ist-darueber .eo-titel { color: #C06A22; }

.hinweis-box {
  margin-top: 18px; padding: 16px 20px; background: rgba(10, 23, 48, 0.04);
  border: 1px solid var(--border-subtle); border-radius: 3px;
  font-size: 13.5px; color: var(--ink-soft); line-height: 1.55;
}
.hinweis-box strong { color: var(--navy); }
.hinweis-box + .hinweis-box { margin-top: 12px; }

.quellenzeile {
  margin-top: 18px; font-size: 12px; color: var(--ink-soft); line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

/* ---------- Disclaimer ---------- */
.disclaimer-band {
  margin-top: 36px; padding: 18px 22px; background: rgba(10, 23, 48, 0.04);
  border: 1px solid var(--border-subtle); border-radius: 3px;
  font-size: 13.5px; color: var(--ink-soft); line-height: 1.55; display: flex; gap: 12px;
}
.disclaimer-band svg { width: 20px; height: 20px; flex-shrink: 0; color: var(--gold-ink); margin-top: 1px; }
.disclaimer-band strong { color: var(--navy); }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .rechner-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 880px) {
  .tool-hero { padding: 48px 0 36px; }
}
@media (max-width: 520px) {
  .zahlen-paar { grid-template-columns: 1fr; }
  .kpi-value { font-size: 34px; }
}

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* Ehepartner-Schalter: tauscht die Bemessungsgrundlage aus (Paragraf 84 Satz 3 und 4 EStG),
   deshalb bewusst abgesetzt vom normalen Reglerblock und nicht als weiterer Regler. */
.partner-schalter {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
}
.ps-zeile {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--navy);
  font-weight: 600;
}
.ps-zeile input[type="checkbox"] {
  flex-shrink: 0;
  width: 17px;
  height: 17px;
  margin-top: 1px;
  accent-color: var(--gold);
  cursor: pointer;
}
.ps-zeile:hover { color: var(--gold-ink, var(--navy)); }
.partner-schalter .control-hint { margin-top: 12px; }

/* ================= HEIZUNGSTAUSCH ================= */

.feldgruppe { border: 0; margin: 0 0 8px; padding: 0; min-width: 0; }
.feldgruppe + .feldgruppe { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--border-subtle); }
.feldgruppe > legend {
  font-family: var(--font-display, inherit);
  font-size: 1.15rem; color: var(--navy); padding: 0; margin-bottom: 14px;
  float: left; width: 100%; /* sonst sitzt die Legende im Trennstrich */
}
.feldgruppe > legend + * { clear: both; }
.feldgruppe .ps-zeile + .ps-zeile { margin-top: 12px; }

.select {
  font-family: inherit; font-size: 14.5px; font-weight: 600; color: var(--navy);
  background: var(--white-soft); border: 1px solid var(--border-subtle); border-radius: 2px;
  padding: 9px 34px 9px 12px; cursor: pointer; max-width: 62%;
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none' stroke='%23B8924A' stroke-width='2'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
}
.select:focus-visible { border-color: var(--gold); outline: 2px solid var(--navy); outline-offset: 2px; }

/* Liter oder kWh: zwei Knoepfe als Schalter, der gewaehlte ist navy hinterlegt. */
.einheit-wahl { display: inline-flex; border: 1px solid var(--border-subtle); border-radius: 2px; overflow: hidden; margin-bottom: 14px; }
.einheit-wahl label { position: relative; }
.einheit-wahl input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.einheit-wahl span { display: block; padding: 7px 16px; font-size: 14px; font-weight: 600; color: var(--navy); background: var(--white-soft); transition: background 150ms ease, color 150ms ease; }
.einheit-wahl input:checked + span { background: var(--navy); color: #F4ECDC; }
.einheit-wahl input:focus-visible + span { outline: 2px solid var(--gold); outline-offset: -3px; }

.beispiel-zeile { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin: 0 0 22px; }
.beispiel-knopf {
  font: inherit; font-size: 14px; font-weight: 600; color: var(--navy);
  background: transparent; border: 1px solid var(--gold); border-radius: 2px;
  padding: 8px 14px; cursor: pointer; transition: background 150ms ease;
}
.beispiel-knopf:hover { background: rgba(201, 168, 95, 0.14); }
.beispiel-knopf:focus-visible { outline: 2px solid var(--navy); outline-offset: 2px; }
.beispiel-hinweis { font-size: 14px; color: var(--ink-soft); margin: 0; }
.ist-beispiel .control-field { box-shadow: inset 0 -2px 0 rgba(201, 168, 95, 0.55); }
.beispiel-marke { display: none; font-size: 13px; color: var(--gold-ink, #8A6A2B); margin-top: 6px; }
.ist-beispiel .beispiel-marke { display: block; }

.optional-details { margin-top: 18px; }
.optional-details > summary { cursor: pointer; font-size: 14.5px; font-weight: 600; color: var(--navy); list-style: none; }
.optional-details > summary::-webkit-details-marker { display: none; }
.optional-details > summary::before { content: "+ "; color: var(--gold); }
.optional-details[open] > summary::before { content: "− "; }
.optional-details > .control:first-of-type { margin-top: 16px; }

/* Die zwei Varianten nebeneinander. Gleiche Gestalt, damit keine Seite vorab gewinnt. */
.varianten { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0 8px; }
.variante { background: rgba(10, 23, 48, 0.035); border-radius: 3px; padding: 16px; }
.variante-name { display: block; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 6px; }
.variante-wert { display: block; font-size: clamp(1.25rem, 0.9rem + 1.2vw, 1.7rem); font-weight: 700; font-variant-numeric: tabular-nums; color: var(--navy); }
.variante-sub { display: block; font-size: 14px; color: var(--ink-soft); margin-top: 4px; }
.variante .linie-farbe { display: inline-block; width: 18px; height: 3px; vertical-align: middle; margin-right: 6px; border-radius: 2px; }
.linie-oel { background: #A0522D; }
.linie-wp { background: var(--gold); }

.verlauf { margin: 18px 0 6px; }
.verlauf svg { width: 100%; height: auto; display: block; }
.verlauf .achse { stroke: rgba(10, 23, 48, 0.25); stroke-width: 1; }
.verlauf .pfad-oel { stroke: #A0522D; stroke-width: 2.5; fill: none; }
.verlauf .pfad-wp { stroke: var(--gold); stroke-width: 2.5; fill: none; }
.verlauf .markierung { fill: var(--navy); }
.verlauf text { font-size: 15px; fill: var(--ink-soft); font-variant-numeric: tabular-nums; }

.block-urteil .ausgleich { font-family: var(--font-display, inherit); font-size: clamp(1.25rem, 1rem + 1.2vw, 1.7rem); line-height: 1.3; margin: 6px 0 10px; color: var(--navy); }
.block-urteil.ist-leer .ausgleich { color: var(--ink-soft); font-style: italic; }

.pflicht-liste { margin: 0; padding-left: 1.1em; }
.pflicht-liste li { font-size: 15px; line-height: 1.6; margin: 6px 0; }

@media (max-width: 360px) {
  .varianten { grid-template-columns: 1fr; }
  .select { max-width: 100%; }
}

/* Ergebnisbloecke, aus vermieten-rechner.css */
.block-rest {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--gold);
  border-radius: 3px;
  padding: 26px;
  margin-bottom: 26px;
}
.block-rest .kpi { font-size: clamp(2.4rem, 1.6rem + 3vw, 3.4rem); line-height: 1.05; margin: 6px 0 8px; }
.block-rest .kpi-unter { font-size: 15px; color: var(--ink-soft); margin-bottom: 22px; }

.aufschluesselung { margin: 0 0 22px; }
.aufschluesselung > div { display: flex; justify-content: space-between; gap: 18px; padding: 9px 0; border-bottom: 1px solid var(--border-subtle); }
.aufschluesselung dt { font-size: 15px; color: var(--ink-soft); margin: 0; }
.aufschluesselung dd { font-size: 15px; margin: 0; font-variant-numeric: tabular-nums; }
.aufschluesselung .summe dt, .aufschluesselung .summe dd { font-weight: 700; color: var(--ink); }
.block-urteil {
  background: rgba(10, 23, 48, 0.045);
  border: 1px dashed rgba(10, 23, 48, 0.28);
  border-radius: 3px;
  padding: 26px;
}
.block-urteil .urteil-begruendung {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0;
}
.block-urteil .urteil-rechnung {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-size: 14px;
  color: var(--ink-soft);
}
.mini-label-abstand { margin-top: 22px; }