/* ============================================================
   ElektroCheck Stuttgart — style.css
   Brand: Konzept C (Schaltplan-Grid)
   IA: X3 (Pflichten-Check Self-Discovery)
   Mobile-first, vanilla CSS, zero dependencies
   ============================================================ */

/* ---- 1. FONT-FACE (self-hosted WOFF2, SIL OFL 1.1) ---------- */
/* Files expected under ./fonts/ — Claude Code Phase 5 will run subsetting.
   Target after Latin+DE-Umlaut subset: ≤80KB total for all three. */

@font-face {
  font-family: "Space Grotesk";
  src: url("./fonts/SpaceGrotesk-Variable.subset.woff2") format("woff2-variations"),
       url("./fonts/SpaceGrotesk-Variable.subset.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Public Sans";
  src: url("./fonts/PublicSans-Variable.subset.woff2") format("woff2-variations"),
       url("./fonts/PublicSans-Variable.subset.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Space Mono";
  src: url("./fonts/SpaceMono-Regular.subset.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Space Mono";
  src: url("./fonts/SpaceMono-Bold.subset.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---- 2. DESIGN TOKENS --------------------------------------- */

:root {
  /* Colour: Brand C — Schaltplan-Grid, Kalkstein-paper × graphite × schematic-signal */
  --paper-50:       #FFFFFF;
  --kalkstein-100:  #F2EFE8;
  --kalkstein-200:  #E8E3D7;
  --graphite-900:   #1A1A1A;
  --graphite-700:   #333333;
  --graphite-500:   #5A6066;
  --graphite-300:   #9DA3A8;

  /* Signal — W-02: NEVER use these alone. Always pair with icon + text label.
     ⚠ NON-TEXT ONLY — both fail WCAG AA 4.5:1 against paper-50.
        --erde-green = 3.99:1 (UI 3:1 ✅ / text ❌, darken to #2F7A47 for text-use)
        --warn-amber = 3.29:1 (UI 3:1 ✅ / text ❌, darken to #8E5A0E for text-use) */
  --spannung-red:   #D9342B;  /* Schematic DIN: Phase / Warning / Error — 4.67:1 (text ✅) */
  --erde-green:     #3F8F5A;  /* Schematic DIN: Schutzleiter / Success / Geprüft — non-text-only */
  --warn-amber:     #C67A12;  /* Risiko-Block / Achtung — non-text-only */

  /* Grid-line tones for leitmotiv */
  --grid-line:      rgba(26, 26, 26, 0.06);   /* DIN-grid bg dots */
  --rule-line:      rgba(26, 26, 26, 0.18);   /* dividers, hairlines */
  --junction-bg:    rgba(26, 26, 26, 0.04);   /* hover surfaces */

  /* Semantic borders — added Phase 5 to consolidate ad-hoc declarations */
  --border-subtle:  var(--hairline) solid var(--rule-line);
  --border-input:   var(--hairline) solid var(--graphite-500);    /* 6.36:1 ✅ AA UI */
  --border-strong:  var(--line-thick) solid var(--graphite-900);

  /* Touch targets — WCAG 2.5.8 ≥24, BFSG-comfortable ≥44/48 */
  --touch-min:          44px;
  --touch-comfortable:  48px;
  --touch-large:        56px;

  /* Typography — scale 1.25 (minor third) */
  --font-display: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-body:    "Public Sans",   system-ui, -apple-system, sans-serif;
  --font-mono:    "Space Mono",    ui-monospace, "SFMono-Regular", monospace;

  --text-xs:   12px;
  --text-sm:   14px;
  --text-base: 16px;   /* BFSG minimum body */
  --text-lg:   20px;
  --text-xl:   25px;
  --text-2xl:  31px;
  --text-3xl:  39px;
  --text-4xl:  49px;

  --leading-tight:  1.15;
  --leading-base:   1.55;

  --tracking-tight: -0.01em;
  --tracking-wide:  0.04em;

  /* Spacing — 8pt grid */
  --space-1:   4px;
  --space-2:   8px;
  --space-3:   12px;
  --space-4:   16px;
  --space-5:   24px;
  --space-6:   32px;
  --space-7:   48px;
  --space-8:   64px;
  --space-9:   96px;

  /* Layout */
  --container-max: 1200px;
  --content-max:   720px;   /* prose width */
  --form-max:      560px;

  /* Borders, radii */
  --hairline:      1px;
  --line-thick:    2px;
  --radius-sm:     2px;
  --radius-md:     4px;
  --radius-full:   50%;

  /* Motion */
  --duration-fast:    120ms;
  --duration-base:    200ms;
  --ease-base:        cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index scale */
  --z-sticky-bar:    20;
  --z-header:        30;
  --z-skip-link:     50;
}

/* ---- 3. RESET + BASE ---------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

/* Disable native mobile tap-highlight (iOS/Android blue) — use our own focus styles instead */
* { -webkit-tap-highlight-color: transparent; }
/* iOS Safari can draw blue focus ring around fieldset/legend — kill it */
fieldset:focus,
legend:focus,
fieldset { outline: none; }
fieldset:focus-within > legend { outline: none; }
/* Keep our own focus-visible styles intact (declared per-element below) */

html {
  /* CSS smooth-scroll for anchor links — respects prefers-reduced-motion via @media below */
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-base);
  color: var(--graphite-900);
  background: var(--paper-50);
  /* DIN-grid pattern background — Schaltplan-leitmotiv */
  background-image: radial-gradient(circle, var(--grid-line) 1px, transparent 1px);
  background-size: 8px 8px;
  background-position: 0 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Disable grid bg on mobile to keep performance + visual cleanliness */
@media (max-width: 767.98px) {
  body { background-image: none; }
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin: 0;
  /* IMPORTANT: typografie rule — NO period at end of headings.
     Enforced editorially in HTML, this CSS just sets shape. */
}

p { margin: 0 0 var(--space-4); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--graphite-900);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { text-decoration-thickness: 2px; }
a:focus-visible {
  outline: 2px solid var(--graphite-900);
  outline-offset: 2px;
}

img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; }

/* Skip link (a11y) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  padding: var(--space-2) var(--space-4);
  background: var(--graphite-900);
  color: var(--paper-50);
  text-decoration: none;
  z-index: var(--z-skip-link);
}
.skip-link:focus { top: 0; }

/* Visually-hidden but available to screen readers */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ---- 4. LAYOUT PRIMITIVES ----------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container { padding-left: var(--space-6); padding-right: var(--space-6); }
}

.section {
  padding: var(--space-7) 0;
}
@media (min-width: 768px) {
  .section { padding: var(--space-9) 0; }
}

.section--tight { padding: var(--space-6) 0; }

.section__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}
@media (min-width: 1024px) {
  .section__title { font-size: var(--text-3xl); }
}

/* Schaltplan-style hr — dimension-rule with junction-dot */
.rule {
  border: 0;
  border-top: var(--hairline) solid var(--rule-line);
  margin: 0;
}

/* ---- 5. HEADER ---------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--paper-50);
  border-bottom: var(--hairline) solid var(--rule-line);
  /* Respect grid bg under header by tinting bg slightly opaque */
  backdrop-filter: saturate(140%);
  -webkit-backdrop-filter: saturate(140%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--touch-large);
  gap: var(--space-4);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--graphite-900);
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  font-size: var(--text-base);
  text-transform: lowercase;
  min-height: var(--touch-min);    /* QW-5 — ensure tap-target ≥44px */
  padding: var(--space-1) 0;
}
.site-header__brand-mark { width: 24px; height: 24px; flex: 0 0 24px; }

.site-header__nav {
  display: none;
}
@media (min-width: 1024px) {
  .site-header__nav {
    display: flex;
    gap: var(--space-5);
  }
  .site-header__nav a {
    text-decoration: none;
    font-size: var(--text-sm);
    color: var(--graphite-700);
  }
  .site-header__nav a:hover { color: var(--graphite-900); }
}

/* T6 HL-05 — Desktop header-CTA (Option A): persistent re-engagement path */
.site-header__cta {
  display: none;
}
@media (min-width: 1024px) {
  .site-header__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 36px;
    padding: var(--space-2) var(--space-4);
    background: var(--graphite-900);
    color: var(--paper-50);
    border: var(--border-strong);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    transition: background var(--duration-fast) var(--ease-base),
                transform var(--duration-fast) var(--ease-base);
  }
  .site-header__cta:hover  { background: var(--graphite-700); }
  .site-header__cta:active { transform: translateY(1px); }   /* W-04 */
  .site-header__cta:focus-visible {
    outline: 2px solid var(--graphite-900);
    outline-offset: 2px;
  }
}

.site-header__menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--touch-min); min-height: var(--touch-min);
  background: transparent;
  border: var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--graphite-900);
}
@media (min-width: 1024px) {
  .site-header__menu-toggle { display: none; }
}

/* Mobile menu drawer (CSS-only via [aria-expanded] state set by JS) */
.site-header__nav-mobile {
  display: none;
  padding: var(--space-4) 0;
  border-top: var(--hairline) solid var(--rule-line);
}
.site-header__nav-mobile[data-open="true"] { display: block; }
.site-header__nav-mobile a {
  display: block;
  padding: var(--space-3) 0;
  text-decoration: none;
  color: var(--graphite-900);
  font-size: var(--text-base);
  border-bottom: var(--hairline) solid var(--rule-line);
}
.site-header__nav-mobile a:last-child { border-bottom: 0; }

/* ---- 6. HERO + WORDMARK ------------------------------------- */

.hero {
  padding-top: var(--space-7);
  padding-bottom: var(--space-7);
}
@media (min-width: 1024px) {
  .hero {
    padding-top: var(--space-9);
    padding-bottom: var(--space-9);
  }
  .hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: var(--space-8);
    align-items: start;
  }
}

.wordmark {
  display: inline-block;
  font-family: var(--font-display);
  text-transform: lowercase;
  letter-spacing: var(--tracking-tight);
  color: var(--graphite-900);
}
.wordmark__line-1 {
  display: block;
  font-size: var(--text-2xl);          /* T5 — smaller on mobile to free fold-space */
  font-weight: 500;
  line-height: var(--leading-tight);
}
@media (min-width: 768px) {
  .wordmark__line-1 { font-size: var(--text-3xl); }
}
/* T4 — keep wordmark at --text-3xl on desktop so it does not visually
   outweight H1 (was --text-4xl, caused three-way tie in Hero) */
.wordmark__junction {
  display: inline-block;
  width: 0.7em;
  text-align: center;
  font-weight: 500;
  /* `┼` Unicode char looks identical across DE fonts; alt: inline SVG */
}
.wordmark__line-2 {
  display: block;
  margin-top: var(--space-1);          /* T5 — tightened from space-2 */
  font-size: var(--text-base);
  color: var(--graphite-500);
  font-weight: 400;
}
.wordmark__line-2::before {
  content: "── ";
  letter-spacing: -0.1em;
}
.wordmark__line-2::after {
  content: " ────";
  letter-spacing: -0.1em;
}
.wordmark__sub {
  display: none;                       /* T5 — hidden on mobile to free fold-space */
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--graphite-500);
  text-transform: uppercase;
  font-family: var(--font-mono);
}
@media (min-width: 768px) {
  .wordmark__sub { display: block; }
}

.hero__lead {
  margin-top: var(--space-4);          /* T5 — tightened from space-5 */
}
@media (min-width: 768px) {
  .hero__lead { margin-top: var(--space-5); }
}
.hero__h1 {
  font-size: var(--text-xl);           /* T5 — tightened H1 mobile from text-2xl */
  margin-bottom: var(--space-3);
}
@media (min-width: 768px) {
  .hero__h1 { font-size: var(--text-2xl); margin-bottom: var(--space-4); }
}
@media (min-width: 1024px) {
  .hero__h1 { font-size: var(--text-3xl); }
}
.hero__sub {
  font-size: var(--text-base);
  color: var(--graphite-700);
  max-width: 38ch;
}

/* Hero-side Pflichten-Check container */
.hero__check {
  margin-top: var(--space-6);
}
@media (min-width: 1024px) {
  .hero__check { margin-top: 0; }
}

/* ---- 7. PFLICHTEN-CHECK ------------------------------------- */

.check-card {
  background: var(--kalkstein-100);
  border: var(--hairline) solid var(--rule-line);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
@media (min-width: 768px) {
  .check-card { padding: var(--space-6); }
}

.check-progress {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--graphite-500);
  margin-bottom: var(--space-5);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}
.check-progress__dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: transparent;
  border: var(--line-thick) solid var(--graphite-300);
}
.check-progress__dot[data-state="active"] {
  background: var(--graphite-900);
  border-color: var(--graphite-900);
}
.check-progress__dot[data-state="done"] {
  background: var(--erde-green);
  border-color: var(--erde-green);
}
.check-progress__line {
  flex: 1;
  height: 1px;
  background: var(--rule-line);
}

.check-frage {
  display: none;
}
.check-frage[data-active="true"] { display: block; }

.check-frage__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
  font-weight: 500;
}
.check-frage__hint {
  font-size: var(--text-sm);
  color: var(--graphite-500);
  margin-bottom: var(--space-4);
}

/* Radio / checkbox groups disguised as buttons */
.check-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: 0 0 var(--space-5);
  padding: 0;
  border: 0;
  list-style: none;
}
.check-option {
  position: relative;
}
.check-option input {
  position: absolute;
  opacity: 0;
  inset: 0;
  width: 100%; height: 100%;
  margin: 0;
  cursor: pointer;
}
.check-option__label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  min-height: var(--touch-comfortable);
  background: var(--paper-50);
  border: var(--border-input);          /* T2 — was --rule-line 1.6:1, now graphite-500 6.36:1 ✅ */
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--graphite-900);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-base),
              border-color var(--duration-fast) var(--ease-base),
              transform var(--duration-fast) var(--ease-base);
}
.check-option__indicator {
  flex: 0 0 24px;                       /* QW-6 — was 18px (WCAG 2.5.8 ≥24 target) */
  width: 24px; height: 24px;
  border: var(--line-thick) solid var(--graphite-500);
  border-radius: var(--radius-full);
  position: relative;
}
.check-option--multi .check-option__indicator {
  border-radius: var(--radius-sm);
}
.check-option input:checked + .check-option__label {
  background: var(--kalkstein-200);
  border-color: var(--graphite-900);
}
.check-option input:checked + .check-option__label .check-option__indicator {
  background: var(--graphite-900);
  border-color: var(--graphite-900);
}
.check-option input:checked + .check-option__label .check-option__indicator::after {
  content: "";
  position: absolute;
  inset: 4px;                          /* QW-6 — proportional to 24px outer (was 3px for 18px outer) */
  background: var(--paper-50);
  border-radius: inherit;
}
.check-option input:focus-visible + .check-option__label {
  outline: 2px solid var(--graphite-900);
  outline-offset: 2px;
}
/* W-04 — touch tactile */
.check-option__label:active { transform: translateY(1px); }

.check-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ---- 8. BUTTONS --------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--touch-comfortable);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  border: var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--graphite-900);
  color: var(--paper-50);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-base),
              transform var(--duration-fast) var(--ease-base);
}
.btn:hover  { background: var(--graphite-700); }
.btn:active { transform: translateY(1px); }  /* W-04 */
.btn:focus-visible {
  outline: 2px solid var(--graphite-900);
  outline-offset: 2px;
}
.btn[disabled],
.btn[aria-disabled="true"] {
  background: var(--graphite-300);
  border-color: var(--graphite-300);
  cursor: not-allowed;
}

.btn--outline {
  background: transparent;
  color: var(--graphite-900);
}
.btn--outline:hover { background: var(--junction-bg); }

.btn--small {
  min-height: 36px;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--block { width: 100%; }

.btn__icon {
  width: 16px; height: 16px;
  flex: 0 0 16px;
}

/* ---- 9. PFLICHTEN-CHECK OUTPUT ------------------------------ */

.check-output {
  display: none;
  scroll-margin-top: var(--space-5);
  scroll-margin-bottom: 80px;          /* QW-10 — clear sticky-bar 56px + safe-inset */
}
.check-output[data-active="true"] { display: block; }

.output-card {
  background: var(--paper-50);
  border: var(--line-thick) solid var(--graphite-900);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
}
@media (min-width: 768px) {
  .output-card { padding: var(--space-6); }
}

.output-verdict {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: var(--hairline) solid var(--rule-line);
}
.output-verdict__icon {
  flex: 0 0 32px;
  width: 32px; height: 32px;
}
.output-verdict__text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
}

/* W-02 — verdict colour ALWAYS combined with icon + text label */
.output-verdict[data-verdict="ja"] .output-verdict__icon { color: var(--erde-green); }
.output-verdict[data-verdict="ja"] .output-verdict__text { color: var(--graphite-900); }
.output-verdict[data-verdict="nein"] .output-verdict__icon { color: var(--graphite-500); }
.output-verdict[data-verdict="nein"] .output-verdict__text { color: var(--graphite-900); }
.output-verdict[data-verdict="vermutlich"] .output-verdict__icon { color: var(--warn-amber); }
.output-verdict[data-verdict="vermutlich"] .output-verdict__text { color: var(--graphite-900); }

.output-block {
  margin-bottom: var(--space-4);
}
.output-block__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--graphite-500);
  margin-bottom: var(--space-2);
}
.output-block__body {
  font-size: var(--text-base);
}
.output-block__body ul {
  margin: 0;
  padding-left: var(--space-5);
}

.output-block--risk {
  background: var(--kalkstein-100);
  border-left: var(--line-thick) solid var(--warn-amber);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
}
.output-block--risk .output-block__label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--graphite-900);
}

.output-disclaimer {
  margin-top: var(--space-5);
  padding: var(--space-4);
  background: var(--kalkstein-100);
  border-left: var(--line-thick) solid var(--graphite-500);
  font-size: var(--text-sm);
  color: var(--graphite-700);
  border-radius: var(--radius-sm);
}
.output-disclaimer strong { color: var(--graphite-900); }

.output-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* QW-7 — mobile-only sticky-bottom CTA inside long Pflicht-Outputs.
   Brings primary "Termin anfragen" within thumb-reach on small screens. */
@media (max-width: 767.98px) {
  .check-output[data-active="true"] .output-actions {
    position: sticky;
    bottom: 64px;                      /* clears mobile sticky-bar 56px + 8px gap */
    background: var(--paper-50);
    padding: var(--space-3) 0;
    margin-top: var(--space-5);
    box-shadow: 0 -4px 12px rgba(26, 26, 26, 0.08);
    z-index: var(--z-sticky-bar);
  }
}

/* Contact-passive block (Nein-case) — visually softer, no CTA buttons */
.output-passive-contact {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: var(--hairline) solid var(--rule-line);
  font-size: var(--text-sm);
  color: var(--graphite-700);
}
.output-passive-contact a {
  color: var(--graphite-900);
}

/* ---- 10. TRUST-BAR ------------------------------------------ */

.trust-bar {
  background: var(--kalkstein-100);
  border-top: var(--hairline) solid var(--rule-line);
  border-bottom: var(--hairline) solid var(--rule-line);
}
.trust-bar__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  padding-top: var(--space-5);
  padding-bottom: var(--space-5);
}
@media (min-width: 768px) {
  .trust-bar__inner {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-5);
  }
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}
.trust-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background: var(--paper-50);
  border: var(--hairline) solid var(--graphite-900);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--graphite-900);
  text-transform: uppercase;
}
.trust-region {
  font-size: var(--text-sm);
  color: var(--graphite-700);
}
.trust-disclaimer {
  font-size: var(--text-xs);
  color: var(--graphite-500);
  max-width: 60ch;
}

/* ---- 11. LEISTUNGEN ----------------------------------------- */

.leistungen-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .leistungen-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .leistungen-grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
}

.leistung-card {
  background: var(--kalkstein-100);
  border: var(--hairline) solid var(--rule-line);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.leistung-card__icon {
  width: 32px; height: 32px;
  color: var(--graphite-900);
}
.leistung-card__title {
  font-size: var(--text-lg);
  font-weight: 500;
}
.leistung-card__body {
  font-size: var(--text-sm);
  color: var(--graphite-700);
  line-height: var(--leading-base);
}

/* ---- 12. ABLAUF --------------------------------------------- */

.ablauf {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
@media (min-width: 1024px) {
  .ablauf {
    flex-direction: row;
    gap: 0;
    align-items: stretch;
    position: relative;
  }
  .ablauf::before {
    content: "";
    position: absolute;
    top: 32px; left: 0; right: 0;
    height: 1px;
    background: var(--graphite-900);
    z-index: 0;
  }
}

.ablauf-step {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: row;
  gap: var(--space-3);
  padding: 0;
}
@media (min-width: 1024px) {
  .ablauf-step {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0 var(--space-3);
    background: var(--paper-50);
  }
}

.ablauf-step__node {
  width: 32px; height: 32px;
  flex: 0 0 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--paper-50);
  border: var(--line-thick) solid var(--graphite-900);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--graphite-900);
  position: relative;
  z-index: 1;
}

.ablauf-step__body { flex: 1; }
.ablauf-step__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  margin: 0 0 var(--space-1);
}
.ablauf-step__hint {
  font-size: var(--text-sm);
  color: var(--graphite-500);
}

/* mobile vertical bus-line */
@media (max-width: 1023.98px) {
  .ablauf { position: relative; }
  .ablauf::before {
    content: "";
    position: absolute;
    left: 15px; top: 0; bottom: 0;
    width: 1px;
    background: var(--rule-line);
  }
  .ablauf-step { padding-left: 0; }
}

/* ---- 13. ÜBER / FAQ ----------------------------------------- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }
}

.about-figure {
  background: var(--kalkstein-100);
  border: var(--hairline) solid var(--rule-line);
  border-radius: var(--radius-md);
  aspect-ratio: 4 / 3;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.about-figure img,
.about-figure picture {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.about-figure picture img {
  width: 100%; height: 100%;
}

.about-content h3 {
  font-size: var(--text-xl);
  margin: 0 0 var(--space-3);
}
.about-qualifications {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.about-qualifications li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
}
.about-qualifications li::before {
  content: "┼";
  font-family: var(--font-mono);
  color: var(--graphite-500);
  flex: 0 0 12px;
}

/* FAQ */
.faq {
  max-width: var(--content-max);
}
.faq details {
  border-bottom: var(--hairline) solid var(--rule-line);
}
.faq details:first-of-type {
  border-top: var(--hairline) solid var(--rule-line);
}
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-4) 0;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: var(--touch-comfortable);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--graphite-500);
  transition: transform var(--duration-fast) var(--ease-base);
  flex: 0 0 auto;
  line-height: 1;
}
.faq details[open] summary::after {
  content: "−";
}
.faq summary:focus-visible {
  outline: 2px solid var(--graphite-900);
  outline-offset: 2px;
}
.faq summary:active { transform: translateY(1px); }   /* W-04 */
.faq__body {
  padding: 0 0 var(--space-5);
  font-size: var(--text-base);
  color: var(--graphite-700);
  max-width: 60ch;
}

/* ---- 14. FORM ----------------------------------------------- */

.form {
  max-width: var(--form-max);
}
.form__prefill {
  margin-bottom: var(--space-5);
  padding: var(--space-4);
  background: var(--kalkstein-100);
  border: var(--hairline) solid var(--rule-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
}
.form__prefill[hidden] { display: none; }
.form__prefill-label {
  display: flex;                       /* QW: icon + text alignment */
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--graphite-500);
  margin-bottom: var(--space-2);
}
.form__prefill-icon {
  flex: 0 0 14px;
  color: var(--erde-green);            /* non-text-only ✓ — paired with text label */
}
.form__prefill-value {
  color: var(--graphite-900);
}
.form__prefill-edit {
  margin-left: var(--space-2);
  font-size: var(--text-xs);
}

.form__field {
  margin-bottom: var(--space-4);
}
.form__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--graphite-900);
}
.form__label .required {
  color: var(--spannung-red);
  margin-left: var(--space-1);
  font-weight: 400;
}
.form__input,
.form__textarea {
  width: 100%;
  min-height: var(--touch-comfortable);
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--graphite-900);
  background: var(--paper-50);
  border: var(--border-input);
  border-radius: var(--radius-sm);
}
.form__textarea {
  min-height: 120px;
  resize: vertical;
}
.form__input:focus,
.form__textarea:focus {
  outline: 2px solid var(--graphite-900);
  outline-offset: 2px;
  border-color: var(--graphite-900);
}

/* W-02: validation always uses border-colour + icon + text — never colour alone */
.form__field--invalid .form__input,
.form__field--invalid .form__textarea {
  border-color: var(--spannung-red);
  border-width: var(--line-thick);
}
.form__error {
  display: none;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--spannung-red);
  align-items: center;
  gap: var(--space-2);
}
.form__error[data-visible="true"] { display: flex; }
.form__error-icon { width: 16px; height: 16px; flex: 0 0 16px; }

.form__consent {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  margin-bottom: var(--space-5);
  font-size: var(--text-sm);
}
.form__consent input {
  margin-top: 2px;
  width: 18px; height: 18px;
  flex: 0 0 18px;
}

.form__success {
  display: none;
  padding: var(--space-5);
  border: var(--line-thick) solid var(--erde-green);
  background: var(--paper-50);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}
.form__success[data-visible="true"] { display: block; }
.form__success-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-bottom: var(--space-3);
}
.form__success-icon { color: var(--erde-green); width: 24px; height: 24px; flex: 0 0 24px; }

/* ---- 15. KONTAKT-DIREKT ------------------------------------- */

.kontakt-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .kontakt-grid { grid-template-columns: repeat(2, 1fr); }
}

.kontakt-item {
  padding: var(--space-4);
  background: var(--kalkstein-100);
  border: var(--hairline) solid var(--rule-line);
  border-radius: var(--radius-sm);
}
.kontakt-item__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--graphite-500);
  margin-bottom: var(--space-2);
}
.kontakt-item__value {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--graphite-900);
}
.kontakt-item__value a { color: inherit; }

/* ---- 16. FOOTER --------------------------------------------- */

.site-footer {
  border-top: var(--hairline) solid var(--rule-line);
  padding: var(--space-6) 0 var(--space-9);    /* extra-bottom for mobile sticky-bar clearance */
  font-size: var(--text-sm);
  color: var(--graphite-500);
  background: var(--paper-50);
}
@media (min-width: 768px) {
  .site-footer { padding-bottom: var(--space-6); }
}
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}
.site-footer__links a {
  text-decoration: none;
  color: var(--graphite-700);
}
.site-footer__links a:hover { text-decoration: underline; }
.site-footer__legal {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

/* ---- 17. STICKY MOBILE BAR ---------------------------------- */

.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky-bar);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule-line);
  border-top: var(--hairline) solid var(--rule-line);
  /* Safari iOS safe area */
  padding-bottom: env(safe-area-inset-bottom, 0);
}
@media (min-width: 768px) {
  .sticky-bar { display: none; }
}
.sticky-bar a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-large);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  background: var(--paper-50);
  color: var(--graphite-900);
  gap: var(--space-2);
}
.sticky-bar a:nth-child(2) {
  background: var(--graphite-900);
  color: var(--paper-50);
}
.sticky-bar a:active { transform: translateY(1px); }
.sticky-bar__icon { width: 18px; height: 18px; }

/* ---- 18. LEGAL PAGES (impressum / datenschutz) -------------- */

.legal-page {
  padding-top: var(--space-7);
  padding-bottom: var(--space-9);
}
.legal-page h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-5);
}
.legal-page h2 {
  font-size: var(--text-lg);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}
.legal-page p,
.legal-page li {
  font-size: var(--text-base);
  line-height: var(--leading-base);
  max-width: var(--content-max);
}
.legal-page ul {
  padding-left: var(--space-5);
  margin: 0 0 var(--space-4);
}
.legal-back {
  display: inline-block;
  margin-bottom: var(--space-5);
  font-size: var(--text-sm);
}

/* ---- 19. PREFERS-REDUCED-MOTION ----------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- 20. PRINT (Pflicht-Output printable) ------------------- */

@media print {
  body {
    background: #fff !important;
    color: #000 !important;
    font-size: 11pt;
  }
  /* T3 fix — was using class-selectors (.leistungen / .ablauf / .form / .kontakt-direkt
     etc.) that don't match HTML structure (sections use class="section" id="leistungen").
     Now uses ID-selectors that actually target the sections. */
  .site-header, .site-footer, .sticky-bar,
  .hero__lead, .trust-bar,
  #leistungen, #ablauf, #ueber, #faq, #kontakt, #direkt { display: none !important; }

  /* Only Pflicht-output prints when user uses browser-print on output state */
  .check-output[data-active="true"] {
    display: block !important;
    page-break-inside: avoid;
  }
  .check-output[data-active="true"]::before {
    content: "DGUV V3 — Pflicht-Statement (ElektroCheck Stuttgart) — Ausdruck vom " attr(data-print-date);
    display: block;
    font-family: var(--font-mono);
    font-size: 9pt;
    margin-bottom: 12pt;
    color: #555;
  }
  .output-card {
    border: 1pt solid #000 !important;
    padding: 8pt !important;
    box-shadow: none !important;
  }
  .output-disclaimer {
    border-left: 2pt solid #555 !important;
    background: #f5f5f5 !important;
  }
  .output-actions { display: none !important; }
  a::after { content: " (" attr(href) ")"; font-size: 9pt; color: #555; }
}