/* Elektrotechnik E-Blitz – Stylesheet
   Keine externen Fonts (DSGVO), System-Schriften. */

:root {
  --navy: #213864;
  --navy-dark: #172849;
  --navy-light: #2e4a80;
  --volt: #f5b800;
  --volt-dark: #d99f00;
  --ink: #1d2433;
  --muted: #5b6475;
  --line: #e3e7ee;
  --bg: #ffffff;
  --bg-soft: #f4f6fa;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(23, 40, 73, .08);
  --max: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy-light); }
a:hover { color: var(--navy); }
h1, h2, h3, h4 { line-height: 1.2; color: var(--navy); margin: 0 0 .6em; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 750; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; }

.container { width: min(var(--max), 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: #fff; padding: 8px 12px; }

/* ---------- Topbar & Header ---------- */
.topbar { background: var(--navy-dark); color: #cfd8ea; font-size: .88rem; }
.topbar .container { display: flex; gap: 24px; justify-content: flex-end; padding: 6px 0; flex-wrap: wrap; }
.topbar a { color: #fff; text-decoration: none; }

.header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); backdrop-filter: blur(6px); }
.header .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; }
.logo img { width: 260px; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  text-decoration: none; color: var(--ink); font-weight: 650; font-size: .95rem;
  padding: 10px 14px; border-radius: 8px; text-transform: uppercase; letter-spacing: .04em;
}
.nav a:hover { background: var(--bg-soft); color: var(--navy); }
.nav a[aria-current="page"] { background: var(--navy); color: #fff; }
.nav .btn { margin-left: 8px; text-transform: none; letter-spacing: 0; }
.menu-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.menu-toggle span { display: block; width: 26px; height: 3px; background: var(--navy); margin: 5px 0; border-radius: 2px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--volt); color: var(--navy-dark) !important; font-weight: 750;
  text-decoration: none; padding: 13px 22px; border-radius: 8px; border: 0; cursor: pointer;
  font-size: 1rem; transition: background .15s, transform .15s;
}
.btn:hover { background: var(--volt-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; color: #fff !important; border: 2px solid rgba(255,255,255,.7); }
.btn-outline:hover { background: rgba(255,255,255,.12); }
.btn-navy { background: var(--navy); color: #fff !important; }
.btn-navy:hover { background: var(--navy-dark); }

/* ---------- Hero ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: var(--navy-dark) center/cover no-repeat;
}
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(23,40,73,.94) 0%, rgba(23,40,73,.78) 50%, rgba(23,40,73,.35) 100%); }
.hero .container { position: relative; padding: 110px 0 120px; }
.hero h1 { color: #fff; max-width: 720px; }
.hero p.lead { font-size: 1.2rem; max-width: 620px; color: #e1e7f3; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.eyebrow { display: inline-block; font-size: .85rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--volt); margin-bottom: 14px; }

.page-hero { background: var(--navy) center/cover no-repeat; position: relative; color: #fff; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: rgba(23,40,73,.82); }
.page-hero .container { position: relative; padding: 70px 0 64px; }
.page-hero h1 { color: #fff; margin-bottom: .3em; }
.page-hero p { color: #dbe3f1; max-width: 680px; font-size: 1.1rem; margin: 0; }
.breadcrumb { font-size: .88rem; margin-bottom: 14px; color: #b7c4dc; }
.breadcrumb a { color: #fff; text-decoration: none; }

/* ---------- Sections ---------- */
.section { padding: 84px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head p { color: var(--muted); font-size: 1.08rem; }
.center { text-align: center; margin-inline: auto; }

/* USP-Leiste */
.usps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); margin-top: -50px; position: relative; z-index: 2; }
.usp { padding: 26px 24px; border-right: 1px solid var(--line); }
.usp:last-child { border-right: 0; }
.usp strong { display: block; color: var(--navy); font-size: 1.05rem; }
.usp span { color: var(--muted); font-size: .93rem; }
.usp .ico { display: block; width: 34px; height: 34px; color: var(--volt-dark); margin-bottom: 8px; }
.usp .ico svg { width: 100%; height: 100%; }

/* Leistungs-Karten */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  display: flex; flex-direction: column; text-decoration: none; color: inherit; transition: transform .2s, box-shadow .2s;
}
a.card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(23,40,73,.14); color: inherit; }
.card img { aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.card .body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.card p { color: var(--muted); font-size: .97rem; flex: 1; }
.card .more { font-weight: 700; color: var(--navy-light); }
.card .more::after { content: " →"; }

/* Zweispalter */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split img { border-radius: var(--radius); box-shadow: var(--shadow); }
.checklist { list-style: none; padding: 0; margin: 0 0 1.2em; }
.checklist li { position: relative; padding-left: 32px; margin-bottom: 10px; }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: .32em; width: 20px; height: 20px; border-radius: 50%;
  background: var(--volt) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3 3 7-7' fill='none' stroke='%23172849' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat;
}
.cols-2 { columns: 2; column-gap: 32px; }

/* Leistungsdetails */
.services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.service { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; scroll-margin-top: 100px; }
.service h3 { display: flex; align-items: center; gap: 10px; }
.service h3::before { content: ""; width: 10px; height: 22px; background: var(--volt); clip-path: polygon(40% 0, 100% 0, 60% 45%, 100% 45%, 0 100%, 30% 55%, 0 55%); flex: none; }
.service p:last-child { margin-bottom: 0; }
.service ul { margin: 0; color: var(--muted); }

/* Zitat */
.quote { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 44px 48px; position: relative; }
.quote blockquote { margin: 0 0 18px; font-size: 1.18rem; line-height: 1.7; font-style: italic; color: #e6ecf7; }
.quote cite { font-style: normal; font-weight: 700; }
.quote cite span { display: block; font-weight: 400; color: #b7c4dc; font-size: .92rem; }
.quote::before { content: "“"; position: absolute; top: -18px; left: 28px; font-size: 7rem; line-height: 1; color: var(--volt); font-family: Georgia, serif; }

/* Partner */
.partners { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 22px; }
.partner { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-decoration: none; color: inherit; display: flex; flex-direction: column; gap: 12px; }
.partner .logo-box { height: 70px; display: flex; align-items: center; }
.partner .logo-box img { max-height: 70px; width: auto; max-width: 100%; object-fit: contain; }
.partner strong { color: var(--navy); }
.partner span { color: var(--muted); font-size: .92rem; }
a.partner:hover { border-color: var(--navy-light); }

/* CTA */
.cta { background: linear-gradient(120deg, var(--navy-dark), var(--navy-light)); color: #fff; }
.cta .container { display: flex; justify-content: space-between; align-items: center; gap: 30px; padding: 60px 0; flex-wrap: wrap; }
.cta h2 { color: #fff; margin-bottom: .2em; }
.cta p { margin: 0; color: #d7e0ef; }
.cta .actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Kontakt */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; align-items: start; }
.info-list { list-style: none; padding: 0; margin: 0 0 28px; }
.info-list li { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.info-list svg { width: 24px; height: 24px; color: var(--navy-light); flex: none; margin-top: 2px; }
.info-list strong { display: block; color: var(--navy); }
.form { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: block; font-weight: 650; font-size: .93rem; margin-bottom: 6px; color: var(--navy); }
.form input, .form textarea, .form select {
  width: 100%; font: inherit; padding: 12px 14px; border: 1px solid #cdd4e0; border-radius: 8px; background: #fbfcfe; margin-bottom: 16px;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--volt); border-color: var(--volt); }
.form textarea { min-height: 150px; resize: vertical; }
.form .consent { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; color: var(--muted); margin-bottom: 18px; }
.form .consent input { width: auto; margin: 4px 0 0; }
.hp { position: absolute !important; left: -9999px !important; }
.notice { padding: 14px 18px; border-radius: 8px; margin-bottom: 20px; }
.notice.ok { background: #e7f6ec; color: #1d5b33; }
.notice.err { background: #fdecec; color: #8a1f1f; }

/* Rechtstexte */
.legal { max-width: 820px; }
.legal h2 { font-size: 1.4rem; margin-top: 1.8em; }
.legal h3 { font-size: 1.1rem; margin-top: 1.4em; }

/* Leistungs-Kacheln (Startseite) */
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.tile {
  display: flex; flex-direction: column; gap: 4px; padding: 22px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); text-decoration: none; color: var(--ink); transition: border-color .15s, box-shadow .15s, transform .15s;
}
.tile:hover { border-color: var(--navy-light); box-shadow: var(--shadow); transform: translateY(-2px); color: var(--ink); }
.tile-ico { width: 46px; height: 46px; border-radius: 10px; background: #fff6d6; color: var(--navy); display: grid; place-items: center; margin-bottom: 10px; }
.tile-ico svg { width: 24px; height: 24px; }
.tile strong { color: var(--navy); font-size: 1.05rem; }
.tile span:last-child { color: var(--muted); font-size: .92rem; }
.more-link { margin: 28px 0 0; font-weight: 700; }
.more-link a { text-decoration: none; }
.more-link a::after { content: " →"; }
@media (max-width: 1020px) { .tiles { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 420px) { .tiles { grid-template-columns: 1fr; } }

/* Feedback (aufklappbar) */
.feedback { margin-top: 8px; }
.feedback > summary { list-style: none; display: inline-flex; }
.feedback > summary::-webkit-details-marker { display: none; }
.feedback > summary::after { content: "▾"; margin-left: 6px; transition: transform .2s; }
.feedback[open] > summary::after { transform: rotate(180deg); }
.feedback > summary:focus-visible { outline: 3px solid var(--volt); outline-offset: 3px; }
.feedback-panel { margin-top: 18px; }
.feedback-panel .form { box-shadow: var(--shadow); }
.feedback-panel textarea { min-height: 120px; }

/* ---------- Footer ---------- */
.footer { background: #111c33; color: #b9c3d6; font-size: .95rem; }
.footer .container { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding: 64px 0 40px; }
.footer h4 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.footer a { color: #dfe6f3; text-decoration: none; }
.footer a:hover { color: var(--volt); }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 8px; }
.footer .brand img { width: 230px; background: #fff; padding: 10px 12px; border-radius: 8px; margin-bottom: 16px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); }
.footer-bottom .container { display: flex; justify-content: space-between; padding: 18px 0; font-size: .85rem; grid-template-columns: none; flex-wrap: wrap; gap: 10px; }

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .usps { grid-template-columns: repeat(2, 1fr); }
  .usp:nth-child(2) { border-right: 0; }
  .usp:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .footer .container { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch;
    padding: 12px 16px 20px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); display: none;
  }
  .nav.open { display: flex; }
  .nav .btn { margin: 8px 0 0; justify-content: center; }
  .split, .contact-grid, .services { grid-template-columns: 1fr; gap: 32px; }
  .split .media { order: -1; }
  .logo img { width: 200px; }
  .topbar .hide-sm { display: none; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .cards, .usps { grid-template-columns: 1fr; }
  .usp { border-right: 0; border-bottom: 1px solid var(--line); }
  .usp:last-child { border-bottom: 0; }
  .section { padding: 60px 0; }
  .hero .container { padding: 70px 0 90px; }
  .form { padding: 22px; }
  .form .row { grid-template-columns: 1fr; gap: 0; }
  .quote { padding: 36px 26px; }
  .cols-2 { columns: 1; }
  .footer .container { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }