/* ============================================================
   MAIN.CSS — Reset · Basis · Layout · Komponenten · Utilities
   Design-Werte kommen aus tokens.css (nicht hier hartkodieren).
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { line-height: var(--leading-normal); }
img, picture, svg, video { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; }
p, h1, h2, h3, h4 { overflow-wrap: break-word; }

/* ---------- 2. Fonts (selbst gehostet, DSGVO) ---------- */
@font-face {
  font-family: "Space Grotesk";
  src: url("/assets/fonts/space-grotesk-latin-500-normal.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Space Grotesk";
  src: url("/assets/fonts/space-grotesk-latin-700-normal.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("/assets/fonts/dm-sans-latin-400-normal.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("/assets/fonts/dm-sans-latin-500-normal.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("/assets/fonts/dm-sans-latin-700-normal.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap;
}

/* ---------- 3. Basis ---------- */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-body);
  background: var(--color-bg);
}
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
}
h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-xl); }
a { color: var(--color-accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--color-accent-hover); }
strong { color: var(--color-text); }
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
::selection { background: var(--color-accent-tint); color: var(--color-text); }

.skip-link {
  position: absolute; left: -999px; top: var(--space-2); z-index: 100;
  background: var(--color-surface); color: var(--color-text);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm);
}
.skip-link:focus { left: var(--space-2); }

/* ---------- 4. Layout ---------- */
.container { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--space-5); }
.container--narrow { max-width: var(--container-narrow); }
.section { padding-block: var(--space-12); }
.section--alt { background: var(--color-surface-alt); }
.section--dark { background: var(--color-primary); }
.section--dark h2, .section--dark h3 { color: var(--color-on-primary); }
.section--dark p { color: var(--color-on-primary-muted); }
.section--dark strong { color: #fff; }
.section__kicker {
  display: block; font-family: var(--font-heading); font-weight: 500;
  font-size: var(--text-sm); text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--color-accent); margin-bottom: var(--space-3);
}
.section__intro { max-width: var(--container-narrow); margin-block: var(--space-4) var(--space-8); font-size: var(--text-lg); }
.grid-2, .grid-3 { display: grid; gap: var(--space-5); grid-template-columns: 1fr; }

/* ---------- 5. Header & Navigation ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4); min-height: 4.25rem;
}
.site-logo {
  display: flex; align-items: center; gap: var(--space-3);
  font-family: var(--font-heading); font-weight: 700; font-size: 1.1rem;
  color: var(--color-text); text-decoration: none;
}
.site-logo:hover { color: var(--color-text); }
.site-logo svg { flex: none; }
.site-logo__sub { display: block; font-size: 0.72rem; font-weight: 500; color: var(--color-text-muted); letter-spacing: 0.02em; }
/* KI WERK Logo-Lockup (CSS-Rekonstruktion der Wort-Bild-Marke) */
.logo-box {
  display: inline-flex; flex-direction: column; align-items: flex-start;
  border: 3px solid var(--color-logo-dark); border-radius: 12px;
  padding: 7px 14px 6px; line-height: 1;
}
.logo-word { font-family: var(--font-body); font-weight: 700; font-size: 1.45rem; color: var(--color-logo-dark); letter-spacing: 0.01em; }
.logo-word em { font-style: normal; font-weight: 500; color: var(--color-logo-blue); letter-spacing: 0.08em; margin-left: 0.3rem; }
.logo-tagline { font-family: var(--font-body); font-weight: 700; font-size: 0.55rem; letter-spacing: 0.1em; color: var(--color-logo-dark); margin-top: 5px; text-transform: uppercase; }
.logo-box--invert { border-color: rgba(226, 232, 240, 0.8); }
.logo-box--invert .logo-word { color: #F1F5F9; }
.logo-box--invert .logo-word em { color: #7DD3FC; }
.logo-box--invert .logo-tagline { color: #CBD5E1; }
.site-footer .logo-box { margin-bottom: var(--space-4); }
.site-nav { display: none; }
.site-nav.is-open {
  display: block; position: absolute; top: 100%; left: 0; right: 0;
  background: var(--color-surface); border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md); padding: var(--space-4) var(--space-5) var(--space-6);
}
.site-nav ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: var(--space-2); }
.site-nav a {
  display: block; padding: var(--space-3) var(--space-2);
  font-weight: 500; color: var(--color-text); text-decoration: none;
  border-radius: var(--radius-sm); transition: color var(--transition), background var(--transition);
}
.site-nav a:hover { color: var(--color-accent); background: var(--color-accent-tint); }
.site-nav a[aria-current="page"] { color: var(--color-accent); }
.site-nav .btn { margin-top: var(--space-2); }
.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); background: var(--color-surface);
  cursor: pointer; color: var(--color-text);
}
.header-phone {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); background: var(--color-surface);
  color: var(--color-accent); margin-left: auto;
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 48px; padding: var(--space-3) var(--space-5);
  font-family: var(--font-heading); font-weight: 500; font-size: var(--text-base);
  border-radius: var(--radius-sm); border: 1px solid transparent;
  text-decoration: none; cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.btn--primary { background: var(--color-accent); color: #fff; }
.btn--primary:hover { background: var(--color-accent-hover); color: #fff; transform: translateY(-1px); }
.btn--ghost { border-color: var(--color-border); color: var(--color-text); background: transparent; }
.btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }
.section--dark .btn--ghost, .hero .btn--ghost { border-color: var(--color-border-dark); color: var(--color-on-primary); }
.section--dark .btn--ghost:hover, .hero .btn--ghost:hover { border-color: var(--color-accent); color: #fff; }

/* ---------- 7. Hero ---------- */
.hero {
  background: var(--color-primary);
  background-image: radial-gradient(ellipse 70% 60% at 75% 20%, var(--color-hero-glow), transparent 65%);
  color: var(--color-on-primary);
  padding-block: var(--space-12);
  position: relative; overflow: hidden;
}
.hero__inner { display: grid; gap: var(--space-8); align-items: center; grid-template-columns: 1fr; }
.hero h1 { color: #fff; margin-bottom: var(--space-5); }
.hero h1 em { font-style: normal; color: #7DD3FC; }
.hero__lead { font-size: var(--text-lg); color: var(--color-on-primary-muted); max-width: 38rem; margin-bottom: var(--space-6); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-6); }
.hero__media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.hero__facts {
  display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5);
  list-style: none; padding: 0; font-size: var(--text-sm); color: var(--color-on-primary-muted);
}
.hero__facts li { display: flex; align-items: center; gap: var(--space-2); }
.hero__facts svg { color: #7DD3FC; flex: none; }
.hero--page { padding-block: var(--space-10); }

/* ---------- 8. Trust-Leiste & Badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-tint); color: var(--color-accent-hover);
  border-radius: 999px; font-family: var(--font-heading);
  font-weight: 500; font-size: var(--text-sm);
}
.hero .badge { background: rgba(56, 189, 248, 0.12); color: #7DD3FC; margin-bottom: var(--space-5); }
.stats { display: grid; gap: var(--space-5); grid-template-columns: 1fr 1fr; list-style: none; padding: 0; }
.stats__value { display: block; font-family: var(--font-heading); font-weight: 700; font-size: var(--text-2xl); color: var(--color-text); }
.section--dark .stats__value { color: #fff; }
.stats__label { font-size: var(--text-sm); color: var(--color-text-muted); }
.section--dark .stats__label { color: var(--color-on-primary-muted); }

/* ---------- 9. Cards ---------- */
.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: var(--space-3);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card__icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  background: var(--color-accent-tint); color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
}
.card h3 a { color: var(--color-text); text-decoration: none; }
.card h3 a:hover { color: var(--color-accent); }
.card h3 a::after { content: ""; position: absolute; inset: 0; }
.card { position: relative; }
.card__more { margin-top: auto; font-family: var(--font-heading); font-weight: 500; color: var(--color-accent); }
/* Karten behalten ihre eigenen Textfarben, auch in dunklen Sektionen */
.section--dark .card h3 { color: var(--color-text); }
.section--dark .card p { color: var(--color-text-body); }
.section--dark .card .form__hint { color: var(--color-text-muted); }
.card ul { padding-left: 1.2rem; display: grid; gap: var(--space-2); }

/* ---------- 10. Prozess-Schritte ---------- */
.step-list { list-style: none; padding: 0; display: grid; gap: var(--space-5); counter-reset: steps; }
.step-list li {
  counter-increment: steps; position: relative;
  padding-left: 4.25rem; min-height: 3.25rem;
}
.step-list li::before {
  content: counter(steps, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  width: 3.25rem; height: 3.25rem; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-weight: 700;
  background: var(--color-accent-tint); color: var(--color-accent-hover);
}
.step-list h3 { font-size: var(--text-lg); margin-bottom: var(--space-1); }

/* ---------- 11. FAQ (native details) ---------- */
.faq { display: grid; gap: var(--space-3); }
.faq details {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 0;
}
.faq summary {
  cursor: pointer; list-style: none;
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-heading); font-weight: 500; color: var(--color-text);
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-3);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; font-size: 1.4rem; line-height: 1; color: var(--color-accent);
  transition: transform var(--transition); flex: none;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 var(--space-5) var(--space-5); }
.faq details[open] summary { border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-4); }

/* ---------- 12. CTA-Band ---------- */
.cta-band { background: var(--color-primary); background-image: radial-gradient(ellipse 60% 80% at 20% 100%, var(--color-hero-glow), transparent 60%); }
.cta-band .container { display: grid; gap: var(--space-5); align-items: center; padding-block: var(--space-10); }
.cta-band h2 { color: #fff; }
.cta-band p { color: var(--color-on-primary-muted); max-width: 34rem; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ---------- 13. Footer ---------- */
.site-footer { background: var(--color-primary); color: var(--color-on-primary-muted); padding-block: var(--space-10) var(--space-6); font-size: var(--text-sm); }
.site-footer a { color: var(--color-on-primary); text-decoration: none; }
.site-footer a:hover { color: #7DD3FC; }
.site-footer__grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr; margin-bottom: var(--space-8); }
.site-footer h3 { color: #fff; font-size: var(--text-base); margin-bottom: var(--space-3); }
.site-footer ul { list-style: none; padding: 0; display: grid; gap: var(--space-2); }
.site-footer__legal {
  border-top: 1px solid var(--color-border-dark); padding-top: var(--space-5);
  display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); justify-content: space-between;
}

/* ---------- 14. Formulare ---------- */
.form { display: grid; gap: var(--space-4); }
.form label { font-family: var(--font-heading); font-weight: 500; color: var(--color-text); display: block; margin-bottom: var(--space-1); }
.form input, .form textarea {
  width: 100%; padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-surface); color: var(--color-text);
  transition: border-color var(--transition);
}
.form input:focus, .form textarea:focus { border-color: var(--color-accent); outline: none; box-shadow: 0 0 0 3px var(--color-accent-tint); }
.form__hint { font-size: var(--text-sm); color: var(--color-text-muted); }
.form__error {
  margin-top: var(--space-5); padding: var(--space-4) var(--space-5);
  background: #FEF2F2; border: 1px solid var(--color-error);
  border-radius: var(--radius-sm); color: #991B1B; font-size: var(--text-sm);
}
.form__error a { color: #991B1B; }
.form .hp-field { position: absolute; left: -9999px; opacity: 0; pointer-events: none; }

/* ---------- 15. Blog / Artikel ---------- */
.post-card { position: relative; display: flex; flex-direction: column; gap: var(--space-3); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; transition: border-color var(--transition), box-shadow var(--transition); }
.post-card:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); }
.post-card > div { padding: 0 var(--space-5) var(--space-5); display: flex; flex-direction: column; gap: var(--space-2); flex: 1; }
.post-card h3 { font-size: var(--text-lg); }
.post-card h3 a { color: var(--color-text); text-decoration: none; }
.post-card h3 a::after { content: ""; position: absolute; inset: 0; }
.post-card time { font-size: var(--text-sm); color: var(--color-text-muted); }
.article { max-width: var(--container-narrow); margin-inline: auto; }
.article header { margin-bottom: var(--space-6); }
.article__meta { color: var(--color-text-muted); font-size: var(--text-sm); display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); margin-top: var(--space-3); }
.article h2 { font-size: var(--text-2xl); margin-top: var(--space-8); margin-bottom: var(--space-4); }
.article h3 { margin-top: var(--space-6); margin-bottom: var(--space-3); }
.article p, .article ul, .article ol { margin-bottom: var(--space-4); }
.article ul, .article ol { padding-left: 1.4rem; }
.article li { margin-bottom: var(--space-2); }
.article img { border-radius: var(--radius-md); margin-block: var(--space-5); }
.article blockquote { border-left: 3px solid var(--color-accent); padding-left: var(--space-4); color: var(--color-text); font-family: var(--font-heading); margin-block: var(--space-5); }
.author-box {
  display: flex; gap: var(--space-4); align-items: center;
  background: var(--color-surface-alt); border-radius: var(--radius-md);
  padding: var(--space-5); margin-top: var(--space-8);
}
.author-box img { width: 76px; height: 95px; object-fit: cover; border-radius: var(--radius-sm); flex: none; }
/* Zertifikatsvorschau auf der Über-mich-Seite */
.zertifikat-link { display: block; margin-bottom: var(--space-2); }
.zertifikat-bild {
  width: 100%; max-width: 300px; height: auto; display: block;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: #fff; box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.zertifikat-link:hover .zertifikat-bild { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.zertifikat-link { cursor: zoom-in; }
/* Vergroesserte Ansicht (natives dialog-Element, kein Fremdskript) */
/* margin/position explizit, weil der Reset oben die Browser-Vorgaben des dialog-Elements aufhebt */
.lightbox { border: 0; padding: 0; background: transparent; max-width: 94vw; max-height: 94vh; overflow: visible; margin: auto; position: relative; }
.lightbox::backdrop { background: rgba(15, 23, 42, 0.88); }
.lightbox img { display: block; width: auto; height: auto; max-width: 94vw; max-height: 88vh; border-radius: var(--radius-md); box-shadow: var(--shadow-md); background: #fff; }
.lightbox__close {
  position: absolute; top: var(--space-3); right: var(--space-3);
  width: 44px; height: 44px; border: none; border-radius: 50%;
  background: var(--color-primary); color: #fff;
  font-size: 1.5rem; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
}
.lightbox__close:hover { background: var(--color-accent-hover); }
.breadcrumbs { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-5); }
.breadcrumbs ol { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-1); }
.breadcrumbs li + li::before { content: "›"; margin-inline: var(--space-1); color: var(--color-text-muted); }
.breadcrumbs a { color: var(--color-text-muted); }
.hero .breadcrumbs { margin-bottom: var(--space-4); }
.hero .breadcrumbs a, .hero .breadcrumbs li, .hero .breadcrumbs li + li::before { color: var(--color-on-primary-muted); }

/* ---------- 16. Utilities ---------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

/* ---------- 17. Scroll-Reveal (dezent, JS-gesteuert) ---------- */
.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 380ms ease, transform 380ms ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ---------- 18. Responsive (Breakpoints: 640 / 900 / 1200) ---------- */
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(4, 1fr); }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .hero__inner { grid-template-columns: 1.1fr 0.9fr; }
  .cta-band .container { grid-template-columns: 1.2fr auto; }
  .step-list--row { grid-template-columns: repeat(3, 1fr); }
  .step-list--row li { padding-left: 0; padding-top: 4.25rem; }
  .step-list--row li::before { left: 0; top: 0; }
  .site-footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .nav-toggle, .header-phone { display: none; }
  .site-nav { display: block; position: static; }
  .site-nav ul { flex-direction: row; align-items: center; gap: var(--space-1); }
  .site-nav a { padding: var(--space-2) var(--space-3); }
  .site-nav .btn { margin: 0 0 0 var(--space-3); min-height: 42px; padding-block: var(--space-2); }
}
@media (min-width: 1200px) {
  .section { padding-block: var(--space-16); }
}