/*
 * Gestaltung im Stil klassischer Rechner-Portale: Logo mit Unterzeile, blaue
 * Navigationsleiste, Brotkrumen, Inhalt mit rechter Seitenleiste, Formulare
 * mit Beschriftung links und Feld rechts, Tabellen mit Zebrastreifen.
 * Keine Hero-Bereiche, keine Icons, keine Verläufe.
 */
:root {
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-2: #f4f6f9;
  --color-border: #d9dfe6;
  --color-border-strong: #b9c3ce;
  --color-text: #222a33;
  --color-text-muted: #5f6b77;
  --color-primary: #1d4f91;
  --color-primary-dark: #153b6d;
  --color-primary-soft: #eaf1fa;
  --color-link: #0b57a4;
  --color-accent: #d98e04;
  --color-positive: #2e7d32;
  --color-footer: #28323d;
  --radius: 3px;
  --radius-sm: 3px;
  --shadow-sm: none;
  --shadow-md: 0 4px 12px rgba(20, 30, 45, 0.12);
  --max-width: 1140px;
  --max-width-wide: 1140px;
  --header-h: 0px;
  /* Bewusst Systemschriften: Google Fonts von fremden Servern wären in DE/AT
     ein Datenschutzthema (LG München I, 3 O 17493/20). */
  --font: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: clip;
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  color: #1a232d;
}

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ------------------------------------------------------------------ */
/* Kopfzeile: Logo, Navigationsleiste, Brotkrumen                     */
/* ------------------------------------------------------------------ */
.header-top {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Die Marke ist bewusst KEIN <h1>: das h1 gehört dem Seitenthema (SEO). */
.brand {
  display: flex;
  flex-direction: column;
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.2;
}

.brand:hover {
  text-decoration: none;
}

.brand-name {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1a232d;
}

.brand-name b {
  color: var(--color-primary);
}

.brand-tagline {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 0.15rem;
}

.lang-toggle {
  display: flex;
  align-items: center;
  margin-left: auto;
  font-size: 0.85rem;
}

.lang-toggle a,
.lang-toggle button {
  background: none;
  border: none;
  color: var(--color-link);
  padding: 0.2rem 0.5rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.lang-toggle a + a {
  border-left: 1px solid var(--color-border-strong);
}

.lang-toggle a.active,
.lang-toggle button.active {
  color: var(--color-text);
  pointer-events: none;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
}

.nav-toggle-icon {
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-icon::before {
  top: -5px;
}

.nav-toggle-icon::after {
  top: 5px;
}

/* Blaue Navigationsleiste */
.header-right {
  background: var(--color-primary);
}

nav.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-top {
  max-width: var(--max-width);
  margin: 0 auto !important;
  padding: 0 0.5rem !important;
  display: flex;
  flex-wrap: wrap;
}

.nav-group {
  position: relative;
}

.nav-link,
.nav-group-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.8rem 0.9rem;
  background: none;
  border: none;
  color: #fff;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

.nav-group-btn::after {
  content: "";
  border: 4px solid transparent;
  border-top-color: currentColor;
  border-bottom-width: 0;
  opacity: 0.8;
}

.nav-link:hover,
.nav-group-btn:hover,
.nav-group-btn[aria-expanded="true"],
.nav-group:focus-within > .nav-group-btn,
.nav-group:hover > .nav-group-btn {
  background: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
}

.nav-link[aria-current="page"],
.nav-group.is-current > .nav-group-btn {
  background: var(--color-primary-dark);
}

.nav-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 30;
  min-width: 15rem;
  padding: 0.35rem 0 !important;
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: none;
  box-shadow: var(--shadow-md);
  display: none;
}

.nav-group:hover > .nav-menu,
.nav-group:focus-within > .nav-menu,
.nav-group-btn[aria-expanded="true"] + .nav-menu {
  display: block;
}

.nav-menu a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-text);
  font-size: 0.93rem;
}

.nav-menu a:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  text-decoration: none;
}

.nav-menu a[aria-current="page"] {
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* Brotkrumen */
.breadcrumb {
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
}

.breadcrumb ol {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.55rem 1rem;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  color: var(--color-text-muted);
}

.breadcrumb li + li::before {
  content: "›";
  margin-right: 0.35rem;
  color: var(--color-border-strong);
}

.breadcrumb [aria-current="page"] {
  color: var(--color-text);
}

@media (max-width: 899px) {
  .nav-toggle {
    display: inline-flex;
  }

  .lang-toggle {
    margin-left: auto;
  }

  .header-right {
    display: none;
  }

  .nav-open .header-right {
    display: block;
  }

  .nav-top {
    flex-direction: column;
    padding: 0.25rem 0 0.75rem !important;
  }

  .nav-link,
  .nav-group-btn {
    padding: 0.65rem 1rem;
  }

  .nav-group-btn {
    width: 100%;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.75);
    cursor: default;
    pointer-events: none;
    padding-bottom: 0.25rem;
  }

  .nav-group-btn::after {
    display: none;
  }

  .nav-group.is-current > .nav-group-btn {
    background: none;
  }

  .nav-menu,
  .nav-group:hover > .nav-menu {
    position: static;
    display: block;
    min-width: 0;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0 !important;
  }

  .nav-menu a {
    color: #fff;
    padding: 0.45rem 1rem 0.45rem 1.75rem;
  }

  .nav-menu a:hover,
  .nav-menu a[aria-current="page"] {
    background: var(--color-primary-dark);
    color: #fff;
  }

  .brand-name {
    font-size: 1.35rem;
  }

  .brand-tagline {
    display: none;
  }
}

/* ------------------------------------------------------------------ */
/* Seitenraster: Inhalt + rechte Seitenleiste                         */
/* ------------------------------------------------------------------ */
.page-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  gap: 2.5rem;
  align-items: start;
}

main {
  min-width: 0;
}

.page-layout > main {
  padding: 0;
}

.sidebar {
  display: grid;
  gap: 1.25rem;
  font-size: 0.92rem;
}

.side-box {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.side-box-title {
  margin: 0;
  padding: 0.55rem 0.9rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.92rem;
}

.side-group {
  margin: 0;
  padding: 0.7rem 0.9rem 0.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.side-box ul {
  list-style: none;
  margin: 0;
  padding: 0 0 0.35rem;
}

.side-box li a {
  display: block;
  padding: 0.3rem 0.9rem 0.3rem 1.6rem;
  position: relative;
}

.side-box li a::before {
  content: "›";
  position: absolute;
  left: 0.9rem;
  color: var(--color-text-muted);
}

.side-box li a[aria-current="page"] {
  color: var(--color-text);
  font-weight: 700;
  background: var(--color-primary-soft);
}

.side-note p:not(.side-box-title) {
  margin: 0;
  padding: 0.75rem 0.9rem 0;
  color: var(--color-text-muted);
}

.side-note p:last-child {
  padding-bottom: 0.9rem;
}

@media (max-width: 899px) {
  .page-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ------------------------------------------------------------------ */
/* Seitenkopf der Rechner                                             */
/* ------------------------------------------------------------------ */
.hero {
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: 1.85rem;
  margin: 0 0 0.6rem;
}

.hero p {
  margin: 0;
  color: #3d4751;
}

.hero .page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.page-meta a {
  color: inherit;
  text-decoration: underline;
}

/* ------------------------------------------------------------------ */
/* Startseite                                                         */
/* ------------------------------------------------------------------ */
main.home {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.75rem 1rem 3rem;
}

main.home h1 {
  font-size: 1.9rem;
  margin: 0 0 0.6rem;
}

.lead {
  margin: 0 0 1.75rem;
  max-width: 52rem;
  color: #3d4751;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  align-items: start;
}

.category-box {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.category-box h2 {
  margin: 0;
  padding: 0.65rem 1rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.05rem;
}

.category-desc {
  margin: 0;
  padding: 0.65rem 1rem;
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.calc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.calc-list li {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.calc-list li:last-child {
  border-bottom: none;
}

.calc-list a {
  font-weight: 700;
  font-size: 1rem;
}

.calc-country {
  margin-left: 0.4rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.calc-country::before {
  content: "(";
}

.calc-country::after {
  content: ")";
}

.calc-list p {
  margin: 0.25rem 0 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

main.home .content-block {
  max-width: 52rem;
}

@media (max-width: 899px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
}

/* Toter Schalter im PV-Rechner (siehe CLAUDE.md), per hidden-Attribut aus */
.mode-toggle[hidden] {
  display: none;
}

.mode-toggle {
  display: flex;
  gap: 0.5rem;
  margin: 1.5rem 0 1rem;
}

.mode-toggle button {
  flex: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
}

.mode-toggle button.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.table-scroll {
  overflow-x: auto;
}

/* ------------------------------------------------------------------ */
/* Data visualization (PV chart: investment vs. revenue, amortization) */
/* ------------------------------------------------------------------ */
.viz-root {
  color-scheme: light;
  --viz-surface:    #fcfcfb;
  --viz-text:       #0b0b0b;
  --viz-text-2:     #52514e;
  --viz-muted:      #898781;
  --viz-grid:       #e1e0d9;
  --viz-baseline:   #c3c2b7;
  --viz-series-1:   #2a78d6; /* blue: Eigenverbrauchsersparnis / positive (Gewinn) */
  --viz-series-2:   #eb6834; /* orange: Einspeiseerlös */
  --viz-series-3:   #1baf7a; /* aqua: Ertrag gesamt (Bar-Summe) */
  --viz-series-neg: #e34948; /* red: Investition / negativer Cashflow */
}
/*
 * Hinweis: Hier standen zwei Dark-Mode-Blöcke, die nur die Diagramm-Palette
 * umgestellt haben. Da die Seite sonst keinen Dark Mode hat (kein data-theme
 * wird je gesetzt, Header/Cards/Tabellen bleiben hell), führten sie zu dunklen
 * Diagrammen in weißen Karten. Entfernt, bis es einen Dark Mode für die ganze
 * Seite gibt.
 */

.chart-card {
  position: relative;
  background: var(--viz-surface);
}

.chart-card svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.viz-grid-line {
  stroke: var(--viz-grid);
  stroke-width: 1;
}

.viz-baseline {
  stroke: var(--viz-baseline);
  stroke-width: 1.5;
}

.viz-axis-label {
  fill: var(--viz-muted);
  font-size: 11px;
  font-family: var(--font);
}

.viz-value-label {
  fill: var(--viz-text);
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font);
}

.viz-annotation {
  fill: var(--viz-text-2);
  font-size: 11.5px;
  font-family: var(--font);
}

.viz-bar {
  cursor: pointer;
}

.viz-bar:hover,
.viz-bar:focus {
  filter: brightness(1.08);
  outline: none;
}

.viz-crosshair {
  stroke: var(--viz-baseline);
  stroke-width: 1;
  pointer-events: none;
}

.viz-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.viz-legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.viz-legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

.viz-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--color-text);
  color: #fff;
  font-size: 0.78rem;
  line-height: 1.4;
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
  z-index: 5;
  opacity: 0;
  transition: opacity 0.1s;
  white-space: nowrap;
  transform: translate(-50%, calc(-100% - 10px));
}

.viz-tooltip.visible {
  opacity: 1;
}

.viz-tooltip .viz-tooltip-value {
  font-weight: 700;
}

.viz-tooltip-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.viz-tooltip-key {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .viz-axis-label {
    font-size: 9px;
  }
}

/* ------------------------------------------------------------------ */
/* Förderungscheck (quiz guide)                                       */
/* ------------------------------------------------------------------ */
.guide-progress {
  background: var(--color-border);
  border-radius: 999px;
  height: 6px;
  overflow: hidden;
  margin: 1.25rem 0 0.4rem;
}

.guide-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 999px;
  transition: width 0.2s ease;
  width: 0%;
}

.guide-progress-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: right;
  margin: 0 0 1rem;
}

.guide-question-card h3 {
  margin-top: 0;
  font-size: 1.2rem;
}

.guide-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.guide-option {
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 1.1rem;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--color-text);
  text-align: left;
}

.guide-option:hover {
  border-color: var(--color-primary);
}

.guide-option.selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.guide-option-multi {
  border-radius: var(--radius-sm);
}

.guide-number-input {
  display: block;
  width: 100%;
  max-width: 200px;
  margin-top: 1rem;
  padding: 0.6rem 0.7rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
}

.guide-next-btn {
  margin-top: 1.25rem;
  display: block;
}

.guide-back-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-top: 1.5rem;
  cursor: pointer;
  padding: 0;
}

.guide-back-btn:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.guide-category-heading {
  margin-top: 2rem;
  font-size: 1.15rem;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.35rem;
}

.guide-category-heading:first-of-type {
  margin-top: 1.25rem;
}

.guide-result-card {
  margin-top: 0.9rem;
}

.guide-result-card h4 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.guide-result-card p {
  margin: 0 0 0.6rem;
  color: var(--color-text-muted);
}

.guide-result-link {
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
}

.guide-result-link:hover {
  text-decoration: underline;
}

/* Werbeplätze bleiben im Markup, sind aber bis zur AdSense-Freischaltung
   vollständig ausgeblendet: hidden-Attribut am div entfernen zum Aktivieren. */
.ad-slot[hidden] {
  display: none;
}

.ad-slot {
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-muted);
  text-align: center;
  font-size: 0.8rem;
  padding: 0.75rem;
  margin: 1.5rem auto;
  max-width: var(--max-width);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}

.card + .card,
.card + .ad-slot[hidden] + .card {
  margin-top: 1.25rem;
}

.card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

/* Das Eingabeformular als grau hinterlegter Kasten */
.card:has(> .calc-form) {
  background: var(--color-surface-2);
  border-color: var(--color-border-strong);
}

/*
 * Formular-Layout für alle Rechner: eine Zeile je Feld, Beschriftung links,
 * Eingabe rechts, Hinweis darunter. Wichtig: an der Klasse .calc-form hängen,
 * nicht an einer ID – die Seiten haben verschiedene Formular-IDs.
 */
.calc-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.calc-form .field {
  display: grid;
  grid-template-columns: minmax(0, 42%) minmax(0, 1fr);
  column-gap: 1.25rem;
  row-gap: 0.25rem;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.calc-form .field[hidden] {
  display: none;
}

.calc-form .field > label {
  grid-column: 1;
}

.calc-form .field > :not(label) {
  grid-column: 2;
}

.calc-form label {
  font-size: 0.93rem;
  font-weight: 600;
  color: var(--color-text);
}

.calc-form .hint {
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--color-text-muted);
}

.calc-form input[type="number"],
.calc-form input[type="text"],
.calc-form select {
  width: 100%;
  max-width: 22rem;
  height: 2.4rem;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 0.97rem;
  font-variant-numeric: tabular-nums;
  background-color: #fff;
  color: var(--color-text);
}

.calc-form input[type="number"]:focus,
.calc-form input[type="text"]:focus,
.calc-form select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(29, 79, 145, 0.2);
}

.calc-form input[type="checkbox"] {
  accent-color: var(--color-primary);
}

.calc-form .field.field-inline {
  display: flex;
  gap: 0.5rem;
  padding-left: calc(42% + 1.25rem);
}

.field-inline input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0;
}

.calc-form .field-inline label {
  font-weight: 400;
}

.form-actions {
  grid-column: 1 / -1;
  padding: 1rem 0 0.25rem calc(42% + 1.25rem);
}

button.primary {
  background: var(--color-primary);
  color: #fff;
  border: 1px solid var(--color-primary-dark);
  padding: 0.6rem 1.75rem;
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

button.primary:hover {
  background: var(--color-primary-dark);
}

@media (max-width: 640px) {
  .calc-form .field {
    grid-template-columns: 1fr;
  }
  .calc-form .field > label,
  .calc-form .field > :not(label) {
    grid-column: 1;
  }
  .calc-form input[type="number"],
  .calc-form input[type="text"],
  .calc-form select {
    max-width: none;
  }
  .calc-form .field.field-inline,
  .form-actions {
    padding-left: 0;
  }
}

/* Ergebnisbereiche heißen #ergebnis, #kauf-ergebnis, #miete-ergebnis … */
section[id$="ergebnis"] {
  margin-top: 1.75rem;
}

.netto-highlight {
  background: var(--color-primary-soft);
  border: 1px solid #b8cde6;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.netto-highlight .amount {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary-dark);
}

.netto-highlight .amount-sub {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.93rem;
  color: #3d4751;
}

table.breakdown {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.75rem;
  border: 1px solid var(--color-border);
  font-size: 0.93rem;
}

table.breakdown th,
table.breakdown td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

table.breakdown th {
  background: #e7ecf2;
  color: #2c3640;
  font-weight: 700;
}

table.breakdown tbody tr:nth-child(even) td {
  background: #f8fafc;
}

table.breakdown td:last-child,
table.breakdown th:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

table.breakdown tr.total-row td {
  font-weight: 700;
  background: var(--color-primary-soft);
  border-top: 2px solid var(--color-primary);
}

.disclaimer {
  font-size: 0.85rem;
  color: #4d4535;
  background: #fff8e1;
  border: 1px solid #ecd9a0;
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  margin-top: 1.25rem;
}

section.content-block {
  margin-top: 2.25rem;
}

section.content-block h2 {
  font-size: 1.35rem;
  margin: 0 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-primary);
}

section.content-block h3 {
  font-size: 1.08rem;
  margin: 1.5rem 0 0.4rem;
}

section.content-block p {
  margin: 0 0 0.9rem;
}

.faq {
  margin: 0;
}

.faq dt {
  font-weight: 700;
  margin-top: 1.1rem;
}

.faq dd {
  margin: 0.3rem 0 0;
  color: #3d4751;
}

/* Quellenliste am Ende der Rechnerseiten */
.source-list,
.related-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.source-list li,
.related-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}
.source-list li:last-child,
.related-list li:last-child {
  border-bottom: 0;
}
.source-list a,
.related-list a {
  font-weight: 700;
}
.source-list a::after {
  content: " ↗";
  font-weight: 400;
  color: var(--color-text-muted);
}
.source-list span,
.related-list span {
  display: block;
  margin-top: 0.1rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ------------------------------------------------------------------ */
/* Fußzeile                                                           */
/* ------------------------------------------------------------------ */
footer.site-footer {
  margin-top: 2rem;
  background: var(--color-footer);
  color: #c5ced8;
  font-size: 0.88rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.25rem 1rem 1.5rem;
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) repeat(4, minmax(140px, 1fr));
  gap: 2rem;
}

.footer-about .brand-name {
  color: #fff;
  font-size: 1.3rem;
}

.footer-about .brand-name b {
  color: #8db8ee;
}

.footer-about .brand-tagline {
  display: none;
}

.footer-about p {
  margin: 0.75rem 0 0;
  max-width: 22rem;
  line-height: 1.55;
}

.footer-about .footer-note {
  font-size: 0.8rem;
  color: #95a1ad;
}

.footer-heading {
  margin: 0.2rem 0 0.7rem;
  color: #fff;
  font-weight: 700;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.footer-col a {
  color: #c5ced8;
}

.footer-col a:hover,
.footer-col a[aria-current="page"] {
  color: #fff;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.8rem;
  color: #95a1ad;
}

@media (max-width: 899px) {
  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-about {
    grid-column: 1 / -1;
  }
}

/* ------------------------------------------------------------------ */
/* Rechner-Bausteine: Preset-Auswahl, Regler, KPI-Leiste, Annahmen,    */
/* Szenarien. Eingeführt mit dem Umbau des PV-/Balkonkraftwerk-Rechners.*/
/* ------------------------------------------------------------------ */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --- Anlagentyp-Auswahl --- */
.preset-legend {
  font-size: 0.85rem;
  font-weight: 600;
  margin: 1.5rem 0 0.6rem;
}

.preset-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.preset-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  text-align: left;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  cursor: pointer;
  font: inherit;
  color: var(--color-text);
  transition: border-color 0.15s ease;
}

.preset-card:hover {
  border-color: var(--color-primary);
}

.preset-card[aria-checked="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.preset-title {
  font-weight: 600;
  font-size: 0.98rem;
}

.preset-desc {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.preset-card[aria-checked="true"] .preset-desc {
  color: rgba(255, 255, 255, 0.85);
}

/* --- Regler mit gekoppeltem Zahlenfeld --- */
.slider-row {
  display: grid;
  grid-template-columns: 1fr 5.5rem;
  gap: 0.6rem;
  align-items: center;
}

.calc-form input[type="range"] {
  width: 100%;
  height: 1.6rem;
  accent-color: var(--color-primary);
  touch-action: manipulation;
  cursor: pointer;
}

.calc-form input[type="range"]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* --- Annahmen (progressive Offenlegung) --- */
.assumptions {
  grid-column: 1 / -1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-top: 0.5rem;
  background: var(--color-bg);
}

.assumptions > summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}

.assumptions > summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.assumptions-values {
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.assumptions[open] .assumptions-values {
  display: none;
}

.assumptions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem 1.25rem;
  margin-top: 1rem;
}

/* Felder in den aufklappbaren Annahmen folgen demselben Zeilenlayout */
.calc-form .assumptions-grid {
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 0.5rem;
}

.assumptions {
  background: #fff;
  margin-top: 0.75rem;
}

/* --- Klebende Kennzahlen-Leiste --- */
.kpi-strip {
  position: sticky;
  top: 0;
  z-index: 4;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.25rem 1rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  color: var(--color-text);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.kpi {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.kpi-value {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary-dark);
}

.kpi-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* --- Ergebnissatz in Klartext --- */
.result-sentence {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0 0 1.25rem;
}

.result-sentence strong {
  color: var(--color-text);
}

/* --- Hinweise unter dem Ergebnissatz (Richtwertmiete) --- */
.result-notes {
  margin: -0.5rem 0 1.25rem;
  padding: 0 0 0 1.1rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.result-notes li + li {
  margin-top: 0.35rem;
}

/* --- Szenario-Vergleich (nutzt .calc-grid als Layout) --- */
.scenario-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.scenario-card.is-current {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.scenario-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.scenario-value {
  font-size: 1.35rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.scenario-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.scenario-bar-track {
  height: 6px;
  border-radius: 999px;
  background: var(--color-border);
  overflow: hidden;
}

.scenario-bar {
  height: 100%;
  border-radius: 999px;
  background: var(--color-primary);
}

.scenario-apply {
  align-self: flex-start;
  margin-top: 0.35rem;
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
}

.scenario-apply:hover {
  text-decoration: underline;
}

/* --- Donut-Beschriftung --- */
.viz-donut-center {
  font-size: 26px;
  font-weight: 700;
  fill: var(--viz-text);
}

.viz-donut-sub {
  font-size: 11px;
  fill: var(--viz-text-2);
}

@media (max-width: 600px) {
  main {
    padding-top: 1.5rem;
  }
  .card {
    padding: 1.25rem;
  }
  .home-hero {
    padding: 2.25rem 0 1.5rem;
  }
  .features {
    padding: 1.5rem;
  }
  .kpi-strip {
    position: static;
  }
  .kpi-value {
    font-size: 1.35rem;
  }
  .slider-row {
    grid-template-columns: 1fr 4.5rem;
  }
}