/* ==========================================================================
   Kfz-Sachverständigenbüro Belz — Design-System
   Leitidee: die Website liest sich wie ein sauber geführtes Prüfprotokoll –
   Messraster, Aktenzeichen-Typografie und ein wiederkehrendes Prüfsiegel-Motiv
   statt generischer Dienstleister-Optik.
   ========================================================================== */

/* Schriftarten werden lokal gehostet (assets/fonts/) statt von Google
   nachgeladen -- dadurch entsteht beim Seitenaufruf keine Verbindung zu
   Google-Servern und keine unnötige IP-Übertragung. */

/* ibm-plex-mono-regular - latin */
@font-face {
  font-display: swap;
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/ibm-plex-mono-v20-latin-regular.woff2') format('woff2');
}
/* ibm-plex-mono-500 - latin */
@font-face {
  font-display: swap;
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  src: url('../fonts/ibm-plex-mono-v20-latin-500.woff2') format('woff2');
}
/* source-sans-3-regular - latin */
@font-face {
  font-display: swap;
  font-family: 'Source Sans 3';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/source-sans-3-v19-latin-regular.woff2') format('woff2');
}
/* source-sans-3-500 - latin */
@font-face {
  font-display: swap;
  font-family: 'Source Sans 3';
  font-style: normal;
  font-weight: 500;
  src: url('../fonts/source-sans-3-v19-latin-500.woff2') format('woff2');
}
/* source-sans-3-600 - latin */
@font-face {
  font-display: swap;
  font-family: 'Source Sans 3';
  font-style: normal;
  font-weight: 600;
  src: url('../fonts/source-sans-3-v19-latin-600.woff2') format('woff2');
}
/* oswald-regular - latin */
@font-face {
  font-display: swap;
  font-family: 'Oswald';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/oswald-v57-latin-regular.woff2') format('woff2');
}
/* oswald-500 - latin */
@font-face {
  font-display: swap;
  font-family: 'Oswald';
  font-style: normal;
  font-weight: 500;
  src: url('../fonts/oswald-v57-latin-500.woff2') format('woff2');
}
/* oswald-600 - latin */
@font-face {
  font-display: swap;
  font-family: 'Oswald';
  font-style: normal;
  font-weight: 600;
  src: url('../fonts/oswald-v57-latin-600.woff2') format('woff2');
}
/* oswald-700 - latin */
@font-face {
  font-display: swap;
  font-family: 'Oswald';
  font-style: normal;
  font-weight: 700;
  src: url('../fonts/oswald-v57-latin-700.woff2') format('woff2');
}

:root {
  /* Farben */
  --graphit: #1F2A33;
  --stahlblau: #2C4A63;
  --stahlblau-hell: #3E6689;
  --signalorange: #E2611B;
  --signalorange-dunkel: #C24E10;
  --papier: #F5F3EE;
  --papier-karte: #FFFFFF;
  --nebel: #6B7680;
  --rasterlinie: #DAD5C9;

  /* Typografie */
  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  /* Abstände */
  --spacing-xs: 0.5rem;
  --spacing-s: 1rem;
  --spacing-m: 1.75rem;
  --spacing-l: 3rem;
  --spacing-xl: 5rem;

  --radius: 4px;
  --max-width: 1120px;
}

/* -------------------------------------------------------------------- */
/* Reset & Grundlagen                                                    */
/* -------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--graphit);
  background: var(--papier);
}
img { max-width: 100%; display: block; }
a { color: var(--stahlblau); }
a:hover { color: var(--signalorange); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--graphit);
  line-height: 1.15;
  margin: 0 0 var(--spacing-s);
}
h1 { font-size: clamp(2.1rem, 4vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 var(--spacing-s); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-m);
}

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

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

/* -------------------------------------------------------------------- */
/* Kopfleiste "Aktenzeichen"                                             */
/* -------------------------------------------------------------------- */
.aktenleiste {
  background: var(--graphit);
  color: #C9D2D8;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
.aktenleiste .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.4rem;
  padding-bottom: 0.4rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.aktenleiste a { color: #C9D2D8; text-decoration: none; }
.aktenleiste a:hover { color: #fff; }

/* -------------------------------------------------------------------- */
/* Hauptnavigation                                                       */
/* -------------------------------------------------------------------- */
.site-header {
  background: var(--papier-karte);
  border-bottom: 1px solid var(--rasterlinie);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-s);
  padding-bottom: var(--spacing-s);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.brand .siegel { width: 42px; height: 42px; flex-shrink: 0; }
.brand-siegel-img {
  height: 100%;
  max-height: 44px;
  width: auto;
  max-width: 240px;
  flex-shrink: 0;
  object-fit: contain;
}
.brand-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--graphit);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.15;
}
.brand-text small {
  display: block;
  font-family: var(--font-body);
  text-transform: none;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--nebel);
  letter-spacing: 0;
}

nav.main-nav { display: flex; align-items: center; gap: var(--spacing-m); }
nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-m);
  margin: 0;
  padding: 0;
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
nav.main-nav a { text-decoration: none; color: var(--graphit); }
nav.main-nav a:hover { color: var(--signalorange); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--rasterlinie);
  border-radius: var(--radius);
  padding: 0.4rem 0.6rem;
  font-family: var(--font-display);
  cursor: pointer;
}

@media (max-width: 780px) {
  nav.main-nav { display: none; }
  nav.main-nav.open {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--papier-karte);
    border-bottom: 1px solid var(--rasterlinie);
    padding: var(--spacing-s) var(--spacing-m);
  }
  nav.main-nav.open ul { flex-direction: column; gap: 0.9rem; }
  .nav-toggle { display: inline-block; }
}

.btn-call {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.85rem;
  background: var(--signalorange);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.6rem 1.1rem;
  text-decoration: none;
  white-space: nowrap;
}
.btn-call:hover { background: var(--signalorange-dunkel); color: #fff; }

/* -------------------------------------------------------------------- */
/* Hero                                                                  */
/* -------------------------------------------------------------------- */
.hero {
  position: relative;
  background:
    linear-gradient(180deg, rgba(31,42,51,0.94), rgba(31,42,51,0.94)),
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.05) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.05) 40px);
  color: #EDEFF1;
  padding: var(--spacing-xl) 0;
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: var(--spacing-l);
  align-items: center;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--signalorange);
  text-transform: uppercase;
  margin-bottom: var(--spacing-s);
}
.hero h1 { color: #fff; }
.hero-sub { font-size: 1.15rem; color: #C9D2D8; max-width: 46ch; }
.hero-actions { display: flex; gap: var(--spacing-s); margin-top: var(--spacing-m); flex-wrap: wrap; }
.btn-secondary-hero {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.85rem;
  color: #EDEFF1;
  border: 1px solid #4B5C68;
  border-radius: var(--radius);
  padding: 0.6rem 1.1rem;
  text-decoration: none;
}
.btn-secondary-hero:hover { border-color: var(--signalorange); color: var(--signalorange); }

.siegel-hero { justify-self: center; }
.siegel-hero svg { width: 190px; height: 190px; }

@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; text-align: left; }
  .siegel-hero { display: none; }
}

/* -------------------------------------------------------------------- */
/* Prüfsiegel (Signature-Element, SVG inline erzeugt)                    */
/* -------------------------------------------------------------------- */
.siegel { color: var(--signalorange); }
.siegel .ring { fill: none; stroke: currentColor; }
.siegel text { font-family: var(--font-mono); fill: currentColor; }

/* -------------------------------------------------------------------- */
/* Abschnitte allgemein                                                  */
/* -------------------------------------------------------------------- */
section { padding: var(--spacing-xl) 0; }
section.alt { background: var(--papier-karte); border-top: 1px solid var(--rasterlinie); border-bottom: 1px solid var(--rasterlinie); }
.section-heading { max-width: 62ch; margin-bottom: var(--spacing-l); }
.section-heading .eyebrow {
  font-family: var(--font-mono);
  color: var(--stahlblau);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 0.4rem;
}

/* -------------------------------------------------------------------- */
/* Leistungs-/Prüfkarten                                                 */
/* -------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-m);
}
.pruef-card {
  background: var(--papier-karte);
  border: 1px solid var(--rasterlinie);
  border-radius: var(--radius);
  padding: var(--spacing-m);
  position: relative;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.pruef-card:hover { transform: translateY(-3px); border-color: var(--stahlblau); }
.pruef-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--nebel);
  border: 1px solid var(--rasterlinie);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  margin-bottom: var(--spacing-s);
  text-transform: uppercase;
}
.pruef-card h3 { margin-bottom: 0.5rem; }
.pruef-card p { color: var(--nebel); font-size: 0.97rem; margin-bottom: var(--spacing-s); }
.pruef-card .mehr { font-family: var(--font-display); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; text-decoration: none; }

/* -------------------------------------------------------------------- */
/* Vertrauens-/Kennzahlenleiste                                          */
/* -------------------------------------------------------------------- */
.kennzahlen {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--spacing-m);
  border-top: 1px solid var(--rasterlinie);
  border-bottom: 1px solid var(--rasterlinie);
  padding: var(--spacing-m) 0;
}
.kennzahl { text-align: left; }
.kennzahl .zahl {
  font-family: var(--font-mono);
  font-size: 2rem;
  color: var(--stahlblau);
  display: block;
}
.kennzahl .label { font-size: 0.85rem; color: var(--nebel); }

/* -------------------------------------------------------------------- */
/* Bewertungen                                                           */
/* -------------------------------------------------------------------- */
.review-card {
  background: var(--papier-karte);
  border: 1px solid var(--rasterlinie);
  border-radius: var(--radius);
  padding: var(--spacing-m);
}
.review-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-m);
}
.review-avatar {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--stahlblau);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  text-transform: uppercase;
}
.review-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.review-body { flex: 1; min-width: 0; }
.review-name { font-family: var(--font-display); font-size: 0.92rem; font-weight: 600; line-height: 1.2; }
.review-name a { color: inherit; text-decoration: none; }
.review-name a:hover { text-decoration: underline; }
.review-meta { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8rem; color: var(--nebel); margin-top: 0.15rem; margin-bottom: 0.5rem; }
.review-stars { color: #FBBC04; font-family: var(--font-mono); letter-spacing: 0.1em; font-size: 0.85rem; }
.review-time { font-size: 0.78rem; color: var(--nebel); }
.review-text { color: var(--tinte, var(--nebel)); font-size: 0.95rem; line-height: 1.5; }
.review-hinweis { font-size: 0.8rem; color: var(--nebel); margin-top: var(--spacing-m); }
.review-grid { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }

@media (max-width: 560px) {
  .review-card { flex-direction: column; align-items: flex-start; }
  .review-avatar { width: 48px; height: 48px; font-size: 1.15rem; }
}

/* -------------------------------------------------------------------- */
/* Blog / Ratgeber                                                       */
/* -------------------------------------------------------------------- */
.blog-list { display: grid; gap: var(--spacing-m); }
.blog-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-m);
  background: var(--papier-karte);
  border: 1px solid var(--rasterlinie);
  border-radius: var(--radius);
  padding: var(--spacing-m);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.blog-item:hover { transform: translateY(-2px); border-color: var(--stahlblau); }
.blog-item-media {
  flex: 0 0 72px;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--stahlblau);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  text-transform: uppercase;
}
.blog-item-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.blog-item-body { flex: 1; min-width: 0; }
.blog-item-body h3 { margin-bottom: 0.25rem; }
.blog-item-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--nebel);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
}
.blog-item-body p {
  color: var(--nebel);
  font-size: 0.97rem;
  margin-bottom: var(--spacing-s);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-item-body .mehr { font-family: var(--font-display); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; text-decoration: none; }

@media (max-width: 560px) {
  .blog-item { flex-direction: column; align-items: flex-start; }
  .blog-item-media { width: 56px; height: 56px; font-size: 1.2rem; }
}
.blog-item h3 { margin: 0.4rem 0; }
article.blog-post { max-width: 68ch; margin: 0 auto; }
article.blog-post h2 { margin-top: var(--spacing-l); }

/* -------------------------------------------------------------------- */
/* Formulare                                                             */
/* -------------------------------------------------------------------- */
form.kontaktformular { max-width: 60ch; }
.feld { margin-bottom: var(--spacing-s); }
.feld label { display: block; font-family: var(--font-display); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.02em; margin-bottom: 0.3rem; }
.feld input, .feld textarea {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--rasterlinie);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--papier-karte);
}
.feld textarea { min-height: 140px; resize: vertical; }
.btn-submit {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--stahlblau);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.75rem 1.4rem;
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-submit:hover { background: var(--stahlblau-hell); }

/* -------------------------------------------------------------------- */
/* Footer                                                                */
/* -------------------------------------------------------------------- */
.site-footer {
  background: var(--graphit);
  color: #B7C0C7;
  padding: var(--spacing-l) 0 var(--spacing-m);
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-m);
  margin-bottom: var(--spacing-m);
}
.site-footer h4 { color: #fff; font-size: 0.9rem; margin-bottom: var(--spacing-s); }
.site-footer a { color: #B7C0C7; text-decoration: none; }
.site-footer a:hover { color: var(--signalorange); }
.footer-bottom {
  border-top: 1px solid #3A4650;
  padding-top: var(--spacing-s);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--nebel);
}

/* -------------------------------------------------------------------- */
/* Reveal-on-scroll (dezent, respektiert reduced motion)                 */
/* -------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* Social-Links im Footer (Prüfsiegel-Stil, Signal-Orange) */
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-top: 8px;
  border: 1.5px solid var(--signalorange);
  border-radius: 4px;
  color: var(--signalorange);
  transition: background-color 0.15s ease, color 0.15s ease;
}
.social-link:hover,
.social-link:focus-visible {
  background-color: var(--signalorange);
  color: #fff;
}
.social-link svg {
  display: block;
}