/* =============================================================
   FABIAN PINGEL – KI-Ingenieur Website
   Stil: Professionell, modern, DSGVO-konform (keine externen CDNs)

   Schriftart & Design-Tokens: ausgelagert nach ../brand/tokens.css
   (zentrale Markendatei, wird in den HTML-Seiten vor dieser Datei
   eingebunden). Hier nur noch website-spezifische Komponenten-Stile.
   ============================================================= */

/* ---- Reset -------------------------------------------------  */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

img { max-width: 100%; height: auto; display: block; }
a   { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul  { list-style: none; }
address { font-style: normal; }

/* ---- Hilfklassen ------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section-heading {
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.section-sub {
  color: var(--color-muted);
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
}

/* ---- Buttons ----------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background-color 0.2s, box-shadow 0.2s, transform 0.1s;
}
.btn:hover  { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--color-accent-dark); box-shadow: var(--shadow-md); }

.btn--secondary {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}
.btn--secondary:hover { background: var(--color-accent); color: #fff; }

/* =============================================================
   NAVIGATION
   ============================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav__logo img { height: 36px; width: auto; }

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav__link:hover { color: var(--color-accent); text-decoration: none; }

.nav__link--cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 0.45rem 1.1rem;
  border-radius: 0.4rem;
}
.nav__link--cta:hover { background: var(--color-accent-dark); }

/* Hamburger-Button (nur mobil sichtbar) */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav__toggle span {
  display: block;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* Hamburger → X */
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* =============================================================
   HERO
   ============================================================= */
.hero {
  padding-block: var(--space-xl) var(--space-lg);
  background: linear-gradient(135deg, #182145 0%, #243668 100%);
  color: #fff;
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-lg);
}

.hero__eyebrow {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #e8c97a;   /* Hero eyebrow: aufgehelltes Gold */
  margin-bottom: var(--space-sm);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  color: #fff;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: #cbd5e1;
  max-width: 500px;
  margin-bottom: var(--space-md);
}

.hero__visual img {
  /* Platzhalter-Illustration */
  opacity: 0.85;
  margin-inline: auto;
}

/* =============================================================
   LEISTUNGEN
   ============================================================= */
.services {
  padding-block: var(--space-lg) var(--space-xl);
  background: var(--color-bg);
}

.services > .container > .section-heading,
.services > .container > .section-sub {
  text-align: center;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}

/* ---- Werte-Sektion ----------------------------------------- */
.values-section {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

/* ---- Werte-Streifen ---------------------------------------- */
.values-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-primary);
  border-radius: var(--radius);
  margin-block: var(--space-md);
}

.values-strip__item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  text-align: center;
}

.values-strip__label {
  font-size: 1.1rem;
  font-weight: 800;
  color: #e8c97a;
  letter-spacing: 0.04em;
}

.values-strip__text {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.5;
}

/* ---- Karten ------------------------------------------------ */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.card__icon {
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.card__text {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

.card__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.card__list li {
  font-size: 0.9rem;
  padding-left: 1.25rem;
  position: relative;
  color: var(--color-text);
}
.card__list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* =============================================================
   REFERENZEN
   ============================================================= */
.references {
  padding-block: var(--space-xl);
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

/* Logo-Wall: responsives Raster, Logos in Graustufen, bei Hover farbig */
.logo-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.logo-wall__item {
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-wall__logo {
  max-height: 64px;
  width: auto;
  object-fit: contain;
  transition: transform 0.25s ease;
}

/* Logos in Originalfarbe, bei Hover dezent vergrößert */
.logo-wall__logo:hover {
  transform: scale(1.08);
}

/* =============================================================
   PROZESS
   ============================================================= */
.process {
  padding-block: var(--space-xl);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.process > .container > .section-heading,
.process > .container > .section-sub {
  text-align: center;
}

.process__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
  list-style: none;
  counter-reset: none;
}

.process__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-sm);
}

.process__number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #e8c97a;
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.process__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.process__text {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

@media (max-width: 768px) {
  .process__steps {
    grid-template-columns: 1fr;
  }
  .process__step { text-align: left; flex-direction: row; align-items: flex-start; }
  .process__content { flex: 1; }
}

/* =============================================================
   ÜBER MICH
   ============================================================= */
.about {
  padding-block: var(--space-xl);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-lg);
}

.about__image img {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.about__text p {
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
  max-width: 580px;
}

.about__text .btn { margin-top: var(--space-xs); }

/* =============================================================
   KONTAKT
   ============================================================= */
.contact {
  padding-block: var(--space-xl);
  background: linear-gradient(135deg, #182145 0%, #243668 100%);
  color: #fff;
  text-align: center;
}

.contact .section-heading { color: #fff; }
.contact .section-sub     { color: #94a3b8; }

.contact__location {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #94a3b8;
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.contact__details {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.contact__item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #e2e8f0;
  font-size: 1.05rem;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 0.5rem;
  transition: background 0.2s, border-color 0.2s;
}
.contact__item:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.3);
  text-decoration: none;
  color: #fff;
}

/* =============================================================
   FOOTER
   ============================================================= */
.site-footer {
  background: var(--color-primary);
  color: #64748b;
  padding-block: var(--space-md);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__copy { font-size: 0.875rem; }

.footer__social {
  display: flex;
  gap: var(--space-sm);
}
.footer__social a {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: #94a3b8;
  font-size: 0.875rem;
  transition: color 0.2s;
}
.footer__social a:hover { color: #fff; text-decoration: none; }

.footer__links {
  display: flex;
  gap: var(--space-md);
}
.footer__links a {
  color: #94a3b8;
  font-size: 0.875rem;
  transition: color 0.2s;
}
.footer__links a:hover { color: #fff; text-decoration: none; }

/* =============================================================
   RESPONSIVE
   ============================================================= */
@media (max-width: 900px) {
  .services__grid {
    grid-template-columns: 1fr;
  }
  .values-strip {
    grid-template-columns: 1fr;
  }
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__visual { display: none; }
  .about__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .about__image img { margin-inline: auto; }
  .about__text .btn { display: block; width: fit-content; margin-inline: auto; }
}

@media (max-width: 768px) {
  /* Mobile Navigation */
  .nav__toggle { display: flex; }

  .nav__menu {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);

    /* Ausgeblendet per Standard */
    display: none;
    gap: 0.25rem;
  }
  .nav__menu.is-open {
    display: flex;
  }
  .nav__link { padding: 0.6rem var(--space-sm); }
  .nav__link--cta { text-align: center; }
}

@media (max-width: 600px) {
  :root {
    --space-xl: 4rem;
    --space-lg: 2.5rem;
  }

  .services__grid { grid-template-columns: 1fr; }
  .values-strip { grid-template-columns: 1fr; padding: var(--space-sm); }

  .footer__inner { flex-direction: column; text-align: center; }
  .contact__details { flex-direction: column; align-items: center; }
}

/* =============================================================
   IMPRESSUM / DATENSCHUTZ – Legal-Seiten
   ============================================================= */
.legal-page {
  max-width: 780px;
  padding-block: var(--space-lg) var(--space-xl);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
  transition: color 0.2s;
}
.back-link:hover { color: var(--color-accent); text-decoration: none; }

.legal-page h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border);
}

.legal-page h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

.legal-page h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-sm);
  margin-bottom: 0.25rem;
}

.legal-page p,
.legal-page li {
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.legal-page a {
  color: var(--color-accent);
}

/* Inhaltsverzeichnis */
.legal-toc {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-md);
}
.legal-toc h2 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-top: 0;
  margin-bottom: 0.5rem;
}
.legal-toc ol {
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.legal-toc li { font-size: 0.9rem; }
.legal-toc a  { color: var(--color-text); }
.legal-toc a:hover { color: var(--color-accent); }

.legal-source {
  margin-top: var(--space-lg);
  font-size: 0.85rem;
  color: var(--color-border);
}

/* =============================================================
   BARRIEREFREIHEIT – Fokus-Styles
   ============================================================= */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* Skip-Link für Tastaturnutzer */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: 0 0 0.5rem 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  z-index: 200;
  text-decoration: none;
  transition: top 0.1s;
}
.skip-link:focus {
  top: 0;
}

/* Links in Fließtext (Impressum/Datenschutz) – besserer Kontrast */
.legal-page a {
  color: var(--color-primary);
  text-decoration: underline;
}
.legal-page a:hover {
  color: var(--color-accent);
}