/* Singoldwerk – Demo "Elektro Muster"
   Reines CSS, keine externen Ressourcen, keine Webfonts.
   Eigenes Rasterprinzip: scharfe Kanten, sichtbare Linien, Monospace-
   Kennungen — bewusst anders als die Dachdecker-Demo (dort Rundungen,
   Sans-Uppercase-Labels, Terrakotta/Anthrazit). */

:root {
  --stahl: #0f1c2b;
  --stahl-hell: #1c3049;
  --blau: #1c4e80;
  --blau-hell: #2f6ba8;
  --blaugrau: #eef1f5;
  --blaugrau-dunkel: #dde3ea;
  --linie: #c4ccd6;
  --text: #101820;
  --text-leise: #4c5a68;
  --amber: #e8930f;
  --amber-dunkel: #b56f06;
  --weiss: #ffffff;
  --max: 72rem;
  --schrift: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono",
    Consolas, monospace;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--schrift);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--weiss);
  -webkit-text-size-adjust: 100%;
}

h1, h2, h3 {
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.02em;
  margin: 0 0 .6em;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.375rem; text-transform: uppercase; letter-spacing: .01em; }
h3 { font-size: 1.0625rem; }
p { margin: 0 0 1em; }
a { color: var(--blau); }
img, svg { max-width: 100%; height: auto; display: block; }

:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 1.15rem; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--stahl); color: #fff; padding: .7rem 1rem; z-index: 100;
}
.skip:focus { left: .5rem; top: .5rem; }

.kennung {
  display: inline-block; font-family: var(--mono); font-size: .8125rem;
  color: var(--blau-hell); letter-spacing: .04em; margin-bottom: .6rem;
}
.kennung::before { content: "// "; color: var(--linie); }

/* --- Hinweisbanner --- */
.hinweis {
  background: var(--stahl);
  color: #dbe4ee;
  font-size: .8125rem;
  line-height: 1.45;
  padding: .55rem 1.15rem;
  text-align: center;
}
.hinweis strong { color: #fff; }

/* --- Kopf --- */
.kopf {
  position: sticky; top: 0; z-index: 50;
  background: var(--weiss);
  border-bottom: 2px solid var(--stahl);
}
.kopf .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: .75rem; min-height: 3.5rem; padding-top: .5rem; padding-bottom: .5rem;
}
.marke {
  display: flex; align-items: center; gap: .55rem;
  font-weight: 800; color: var(--stahl); text-decoration: none;
  font-size: 1rem; letter-spacing: -.01em;
}
.marke svg { width: 1.85rem; height: 1.85rem; flex: 0 0 auto; }
.marke small {
  display: block; font-family: var(--mono); font-size: .625rem;
  font-weight: 400; color: var(--text-leise); letter-spacing: .04em;
}

.nav { display: none; }
@media (min-width: 56rem) {
  .nav { display: flex; gap: 1.35rem; margin-left: auto; margin-right: 1.25rem; }
  .nav a {
    color: var(--stahl); text-decoration: none; font-weight: 700;
    font-size: .9375rem; padding: .25rem 0; border-bottom: 2px solid transparent;
  }
  .nav a:hover { border-bottom-color: var(--amber); }
}

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .8rem 1.15rem; border-radius: 2px;
  font-weight: 700; font-size: 1rem; text-decoration: none;
  border: 2px solid transparent; cursor: pointer; min-height: 48px;
}
.btn svg { width: 1.15rem; height: 1.15rem; flex: 0 0 auto; }
.btn-strom { background: var(--amber); color: var(--stahl); }
.btn-strom:hover { background: var(--amber-dunkel); color: #fff; }
.btn-hell { background: var(--weiss); color: var(--stahl); border-color: var(--stahl); }
.btn-hell:hover { background: var(--blaugrau); }
.kopf .btn { padding: .6rem .85rem; font-size: .9375rem; white-space: nowrap; }

/* --- Hero --- */
.hero {
  background: var(--stahl);
  color: #eef1f5;
  padding: 1.75rem 0 2.25rem;
}
.hero .kennung { color: var(--amber); }
.hero h1 { color: #fff; max-width: 20ch; }
.hero p.lead { font-size: 1.0625rem; color: #b9c4d0; max-width: 34rem; }
.hero-aktionen { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.1rem; }
.hero-aktionen .btn { flex: 1 1 14rem; }
.stoerung {
  margin-top: 1.25rem; padding: .85rem 1rem;
  background: var(--stahl-hell); border-left: 3px solid var(--amber);
  font-size: .9375rem; color: #dbe4ee;
}
.stoerung strong { color: #fff; }
.hero-bild {
  border: 1px solid var(--stahl-hell); background: var(--stahl-hell);
  margin-top: 1.5rem;
}
@media (min-width: 58rem) {
  .hero { padding: 3.25rem 0 3.5rem; }
  .hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2.75rem; align-items: center; }
  .hero-bild { margin-top: 0; }
  h1 { font-size: 3rem; }
}

/* --- Vertrauensleiste --- */
.vertrauen { background: var(--blaugrau); border-bottom: 1px solid var(--linie); }
.vertrauen ul {
  list-style: none; margin: 0; padding: 1.1rem 0;
  display: grid; gap: .6rem;
}
.vertrauen li {
  display: flex; align-items: baseline; gap: .5rem; font-weight: 700;
  font-family: var(--mono); font-size: .9375rem; color: var(--stahl);
}
.vertrauen li span.platzhalter {
  font-weight: 400; font-family: var(--schrift); color: var(--text-leise);
  font-size: .875rem;
}
@media (min-width: 46rem) {
  .vertrauen ul { grid-template-columns: repeat(3, 1fr); padding: 1.35rem 0; }
}

/* --- Abschnitte --- */
section { padding: 2.5rem 0; border-top: 1px solid var(--linie); }
.sektionskopf { max-width: 42rem; margin-bottom: 1.75rem; }
.sektionskopf p { color: var(--text-leise); margin-bottom: 0; }
@media (min-width: 48rem) { section { padding: 3.75rem 0; } }

/* --- Leistungen: Zeilen statt Karten --- */
.leistungen { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--linie); }
.leistung {
  display: grid; gap: .35rem .25rem; padding: 1.25rem 0;
  border-bottom: 1px solid var(--linie);
  grid-template-columns: 1fr;
}
.leistung .nr { font-family: var(--mono); font-size: .8125rem; color: var(--blau-hell); }
.leistung h3 { margin-bottom: .2rem; }
.leistung p { margin-bottom: 0; color: var(--text-leise); font-size: .9875rem; }
@media (min-width: 40rem) {
  .leistung {
    grid-template-columns: 3.5rem 1fr;
    align-items: baseline;
  }
  .leistung h3 { grid-column: 2; }
  .leistung p { grid-column: 2; }
}

/* --- Ablauf --- */
.schritte { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
@media (min-width: 48rem) { .schritte { grid-template-columns: repeat(3, 1fr); } }
.schritt {
  padding: 1.25rem 1.25rem 1.25rem 0;
  border-top: 2px solid var(--stahl);
}
.schritt .nr {
  font-family: var(--mono); font-size: 1.5rem; font-weight: 700;
  color: var(--amber-dunkel); display: block; margin-bottom: .5rem;
}
.schritt p { color: var(--text-leise); margin-bottom: 0; font-size: .9875rem; }

/* --- Region --- */
.orte { list-style: none; margin: 0 0 1rem; padding: 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.orte li {
  background: var(--blaugrau); border: 1px solid var(--linie);
  padding: .4rem .9rem; font-weight: 700; font-size: .9375rem; color: var(--stahl);
}
.region-hinweis { color: var(--text-leise); font-size: .9375rem; margin-bottom: 0; }

/* --- Kontakt --- */
.kontakt-raster { display: grid; gap: 1.75rem; }
@media (min-width: 52rem) { .kontakt-raster { grid-template-columns: 1fr 1.25fr; gap: 2.5rem; } }

.kontaktdaten { list-style: none; margin: 0 0 1.5rem; padding: 0; }
.kontaktdaten li { display: flex; gap: .7rem; margin-bottom: .9rem; }
.kontaktdaten svg { width: 1.25rem; height: 1.25rem; color: var(--amber-dunkel); flex: 0 0 auto; margin-top: .25rem; }
.kontaktdaten b {
  display: block; font-family: var(--mono); font-size: .75rem;
  text-transform: uppercase; letter-spacing: .04em; color: var(--text-leise);
  font-weight: 400;
}
.kontaktdaten a { font-weight: 700; text-decoration: none; font-size: 1.0625rem; color: var(--stahl); }
.kontaktdaten a:hover { text-decoration: underline; }

.zeiten { border-collapse: collapse; width: 100%; max-width: 22rem; font-size: .9375rem; }
.zeiten caption { text-align: left; font-weight: 700; margin-bottom: .5rem; }
.zeiten th, .zeiten td { text-align: left; padding: .35rem 0; border-bottom: 1px solid var(--linie); font-weight: 400; }
.zeiten th { font-weight: 700; }

form { background: var(--blaugrau); border: 1px solid var(--linie); padding: 1.25rem; }
.feld { margin-bottom: 1rem; }
.feld label { display: block; font-weight: 700; margin-bottom: .35rem; font-size: .9375rem; }
.feld .pflicht { color: var(--amber-dunkel); }
.feld input, .feld textarea, .feld select {
  width: 100%; padding: .7rem .8rem; font: inherit; font-size: 1rem;
  color: var(--text); background: var(--weiss);
  border: 1px solid #a3aebb; border-radius: 2px; min-height: 48px;
}
.feld textarea { min-height: 7rem; resize: vertical; }
.feld input:focus, .feld textarea:focus, .feld select:focus { border-color: var(--stahl); }
.hinweis-klein { font-size: .8125rem; color: var(--text-leise); margin: .9rem 0 0; }
form .btn { width: 100%; background: var(--stahl); color: #fff; }
form .btn:hover { background: var(--blau); }

/* --- Fuß --- */
.fuss { background: var(--stahl); color: #b9c4d0; padding: 2rem 0 1.25rem; font-size: .9375rem; }
.fuss a { color: #fff; }
.fuss-raster { display: grid; gap: 1.25rem; margin-bottom: 1.5rem; }
@media (min-width: 44rem) { .fuss-raster { grid-template-columns: repeat(3, 1fr); } }
.fuss h2 { font-size: .8125rem; text-transform: uppercase; letter-spacing: .06em; color: #fff; margin-bottom: .6rem; font-family: var(--mono); font-weight: 400; }
.fuss ul { list-style: none; margin: 0; padding: 0; }
.fuss li { margin-bottom: .3rem; }
.fuss-unten { border-top: 1px solid var(--stahl-hell); padding-top: 1rem; font-size: .8125rem; }
.fuss-unten p { margin: 0 0 .35rem; }

/* --- Impressum --- */
.inhalt { padding: 2rem 0 3rem; }
.inhalt .wrap { max-width: 44rem; }
.inhalt h2 { font-size: 1.125rem; margin-top: 2rem; text-transform: none; }
.inhalt dl { margin: 0 0 1rem; }
.inhalt dt { font-weight: 700; margin-top: .75rem; }
.inhalt dd { margin: 0; }
.kasten {
  background: var(--blaugrau); border-left: 3px solid var(--amber);
  padding: 1rem 1.15rem; margin-bottom: 1.5rem;
}
.kasten p:last-child { margin-bottom: 0; }