/* =========================================================================
   43 IT GmbH — KI-Workshop Landingpage (ai.43.gmbh)
   Selbst gehostet, keine externen Fonts/Tracker (DSGVO).
   Markenpalette aus dem 43IT-Logo.
   ========================================================================= */

:root {
  --navy:        #2D2E5C;
  --navy-700:    #24254a;
  --blue:        #0062A9;
  --blue-600:    #0a558e;
  --cyan:        #00AEEF;
  --ink:         #1c1d2e;
  --muted:       #5a5d70;
  --line:        #e3e5ec;
  --bg:          #ffffff;
  --bg-alt:      #f5f6f8;
  --bg-navy:     #2D2E5C;
  --white:       #ffffff;

  --maxw: 1120px;
  --radius: 14px;
  --shadow-sm: 0 1px 3px rgba(28,29,46,.08), 0 1px 2px rgba(28,29,46,.06);
  --shadow-md: 0 10px 30px rgba(28,29,46,.10);

  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ----- Reset / base ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
/* scroll-padding-top hält Sprungziele unterhalb der sticky Kopfzeile (68px);
   ohne das verdeckt der Header die erste Zeile des angesprungenen Abschnitts. */
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { color: var(--navy); line-height: 1.2; font-weight: 700; margin: 0 0 .5em; }
h2 { font-size: clamp(1.6rem, 1.1rem + 1.8vw, 2.3rem); letter-spacing: -.01em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; display: block; }
ul { margin: 0 0 1rem; padding-left: 1.2rem; }
li { margin-bottom: .35rem; }
strong { color: var(--navy-700); }

/* ----- Layout helpers --------------------------------------------------- */
.container { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }
.section { padding: clamp(3rem, 2rem + 5vw, 5.5rem) 0; }
.section--alt { background: var(--bg-alt); }
.section--navy { background: var(--bg-navy); color: #e7e8f2; }
.section--navy h2, .section--navy h3 { color: #fff; }
.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .09em;
  text-transform: uppercase; color: var(--blue); margin-bottom: .6rem;
}
.section--navy .eyebrow { color: var(--cyan); }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 60ch; }
.section--navy .lead { color: #c9cbe0; }
.center { text-align: center; }
.center .lead { margin-inline: auto; }

/* ----- Skip link -------------------------------------------------------- */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--navy); color: #fff; padding: .7rem 1rem; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ----- Buttons ---------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-weight: 600; font-size: 1rem; line-height: 1;
  padding: .85rem 1.4rem; border-radius: 999px; border: 2px solid transparent;
  cursor: pointer; transition: background .15s ease, color .15s ease, border-color .15s ease, transform .05s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn--primary:hover { background: var(--blue-600); border-color: var(--blue-600); }
.btn--ghost { background: transparent; color: var(--navy); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--navy); }
.btn--onnavy { background: var(--cyan); color: var(--navy); border-color: var(--cyan); }
.btn--onnavy:hover { background: #2bc0fb; border-color: #2bc0fb; }
.btn--lg { padding: 1rem 1.7rem; font-size: 1.05rem; }

/* ----- Focus visibility ------------------------------------------------- */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--cyan); outline-offset: 2px; border-radius: 4px;
}

/* ----- Header / nav ----------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92); backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 68px; }
.nav__brand { display: flex; align-items: center; gap: .6rem; }
.nav__brand img { height: 34px; width: auto; }
.nav__sub {
  white-space: nowrap;
  font-size: .72rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--blue); border-left: 2px solid var(--line); padding-left: .6rem;
}
.nav__links { display: flex; align-items: center; gap: 1.4rem; list-style: none; margin: 0; padding: 0; }
/* :not(.btn) — sonst schlägt die Spezifität von `.nav__links a` die
   .btn--*-Klassen und der CTA bekäme navy Text auf blauem Grund. */
.nav__links a { white-space: nowrap; }
.nav__links a:not(.btn) { color: var(--navy); font-weight: 500; font-size: .95rem; }
.nav__links a:not(.btn):hover { color: var(--blue); text-decoration: none; }
.nav__cta { margin-left: .4rem; }
.nav__toggle { display: none; background: none; border: 0; padding: .4rem; cursor: pointer; }
.nav__toggle span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; transition: .2s; }

/* Language switcher: two plain links, the current one marked. Separated from
   the section links by a rule so it does not read as another nav item. */
.nav__lang > nav { display: flex; align-items: center; gap: .5rem; }
.nav__lang { padding-left: .9rem; border-left: 1px solid var(--line); }
.nav__links .nav__lang-link {
  font-size: .82rem; font-weight: 700; letter-spacing: .06em;
  color: var(--muted);
}
.nav__links .nav__lang-link:hover { color: var(--blue); }
.nav__links .nav__lang-link.is-active { color: var(--navy); }

/* Between the drawer and the full row the nav has to give way somewhere: the
   sub-brand goes first, then the gaps and the type. Windows this wide are
   usually a browser on half a large screen, where the links are still worth
   more than the hamburger. */
@media (max-width: 1024px) and (min-width: 861px) {
  .nav__sub { display: none; }
  .nav__links { gap: 1rem; }
  .nav__links a:not(.btn) { font-size: .9rem; }
  .nav__cta { margin-left: .2rem; }
  .nav__cta .btn { font-size: .92rem; padding: .75rem 1.1rem; }
  .nav__lang { padding-left: .7rem; }
}

@media (max-width: 860px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: .5rem 1.25rem 1.25rem; box-shadow: var(--shadow-md);
    display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links li { width: 100%; }
  .nav__links a:not(.btn) { display: block; padding: .8rem 0; border-bottom: 1px solid var(--line); }
  .nav__cta { margin: .8rem 0 0; }
  .nav__cta .btn { width: 100%; justify-content: center; }
  /* In the drawer the two codes sit side by side on one row, not stacked. */
  .nav__lang { padding-left: 0; border-left: 0; }
  .nav__lang > nav { gap: 1.2rem; }
  .nav__links .nav__lang-link { display: inline-block; border-bottom: 0; padding: .8rem 0; }
}

/* ----- Hero ------------------------------------------------------------- */
/* Achtung: in clamp()/calc() müssen + und - von Leerzeichen umgeben sein –
   ohne sie ist die Deklaration ungültig und fällt ersatzlos weg. */
.hero { background: linear-gradient(180deg, #fff 0%, var(--bg-alt) 100%); padding: clamp(3rem, 2rem + 6vw, 6rem) 0 clamp(2.5rem, 2rem + 4vw, 4.5rem); }
.hero__grid { display: grid; grid-template-columns: 1.25fr .9fr; gap: clamp(2rem, 1rem + 4vw, 4rem); align-items: center; }
.hero h1 { font-size: clamp(2rem, 1.3rem + 3.4vw, 3.3rem); letter-spacing: -.015em; }
.hero h1 .accent { color: var(--blue); }
.hero__sub { font-size: 1.18rem; color: var(--muted); max-width: 52ch; margin-bottom: 1.6rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 1.3rem; }
.hero__trust { font-size: .95rem; color: var(--muted); display: flex; align-items: center; gap: .5rem; }
.hero__trust svg { flex: none; }

/* Hero day-split visual */
.daysplit { display: grid; gap: 1rem; }
.daycard {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem 1.5rem; box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
}
.daycard::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; }
.daycard--1::before { background: var(--blue); }
.daycard--2::before { background: var(--cyan); }
.daycard__tag { font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.daycard--2 .daycard__tag { color: #018fc4; }
.daycard h3 { margin: .25rem 0 .4rem; font-size: 1.15rem; }
.daycard p { margin: 0; color: var(--muted); font-size: .98rem; }

@media (max-width: 800px) {
  .hero__grid { grid-template-columns: 1fr; }
}

/* ----- Generic cards / grids ------------------------------------------- */
.grid { display: grid; gap: 1.25rem; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 820px) { .grid--2, .grid--3 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem 1.6rem; box-shadow: var(--shadow-sm); height: 100%;
}
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

/* Problem cards with icon */
.icon-card { display: flex; flex-direction: column; gap: .6rem; }
.icon-card .ic {
  width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(0,98,169,.10); color: var(--blue); flex: none;
}
.icon-card .ic svg { width: 24px; height: 24px; }

/* ----- Concept banner --------------------------------------------------- */
.banner {
  margin-top: 1.5rem; background: rgba(0,174,239,.08); border: 1px solid rgba(0,174,239,.35);
  border-radius: var(--radius); padding: 1.1rem 1.3rem; color: var(--navy-700); font-size: 1rem;
}
.banner strong { color: var(--blue-600); }

/* ----- Module list (Tag 1 / Tag 2) ------------------------------------- */
.modules { display: grid; gap: 1rem; margin-top: 1.8rem; counter-reset: mod; }
.module {
  display: grid; grid-template-columns: auto 1fr; gap: 1.1rem; align-items: start;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.2rem 1.4rem; box-shadow: var(--shadow-sm);
}
.module__num {
  counter-increment: mod; width: 40px; height: 40px; border-radius: 50%;
  background: var(--navy); color: #fff; font-weight: 700; display: grid; place-items: center; flex: none;
}
.module__num::before { content: counter(mod); }
.module h3 { margin: .15rem 0 .35rem; font-size: 1.08rem; }
.module p { margin: 0; color: var(--muted); font-size: .98rem; }

.pill {
  display: inline-block; margin-top: 1.6rem; background: var(--navy); color: #fff;
  font-size: .92rem; font-weight: 500; padding: .55rem 1rem; border-radius: 999px;
}
.pill::before { content: "✓"; color: var(--cyan); font-weight: 700; margin-right: .5rem; }

/* ----- Pipeline (Tag 2) ------------------------------------------------- */
.pipeline { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; gap: .6rem; margin: 1.8rem 0 .5rem; }
.pipe-step {
  background: #fff; border: 1px solid var(--line); border-top: 4px solid var(--blue);
  border-radius: 12px; padding: 1.1rem 1.2rem; box-shadow: var(--shadow-sm);
}
.pipe-step span { display: block; font-size: .76rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.pipe-step strong { display: block; font-size: 1.1rem; color: var(--navy); margin: .2rem 0 .3rem; }
.pipe-step p { margin: 0; font-size: .9rem; color: var(--muted); }
.pipe-arrow { display: grid; place-items: center; color: var(--cyan); font-size: 1.5rem; font-weight: 700; }
@media (max-width: 820px) {
  .pipeline { grid-template-columns: 1fr; }
  .pipe-arrow { transform: rotate(90deg); padding: .2rem 0; }
}

/* ----- Methodik / Datenschutz cards on navy --------------------------- */
.feature { background: var(--navy-700); border: 1px solid rgba(255,255,255,.10); border-radius: var(--radius); padding: 1.5rem 1.6rem; }
.feature h3 { display: flex; align-items: center; gap: .6rem; font-size: 1.1rem; }
.feature h3 svg { color: var(--cyan); flex: none; }
.feature p { color: #c9cbe0; margin: 0; font-size: .98rem; }

/* ----- Referent --------------------------------------------------------- */
.referent { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(1.5rem, 1rem + 3vw, 3rem); align-items: start; }
.referent__photo { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); border: 1px solid var(--line); background: var(--bg-alt); }
.referent__photo img { width: 100%; height: auto; display: block; }
.referent__name { font-size: 1.5rem; margin-bottom: .15rem; }
.referent__role { color: var(--blue); font-weight: 600; margin-bottom: 1.1rem; }
.creds { display: grid; gap: .7rem; margin: 0 0 1.3rem; padding: 0; list-style: none; }
.creds li { display: grid; grid-template-columns: auto 1fr; gap: .7rem; align-items: start; margin: 0; }
.creds .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); margin-top: .55rem; flex: none; }
.creds b { color: var(--navy-700); }
.referent__firm { font-size: .98rem; color: var(--muted); }
@media (max-width: 760px) {
  .referent { grid-template-columns: 1fr; row-gap: 2rem; }
  .referent__photo { max-width: 320px; }
}

/* ----- Testimonial (geplant – standardmäßig versteckt) ------------------ */
/* Zum Veröffentlichen: hidden-Attribut am <section id="stimmen"> entfernen
   und Zitat/Person/Org befüllen. Layout ist vollständig vorbereitet. */
.testimonial { max-width: 760px; margin-inline: auto; text-align: center; }
.testimonial blockquote {
  font-size: clamp(1.2rem, 1rem + 1vw, 1.6rem); color: var(--navy); line-height: 1.4;
  margin: 0 0 1.2rem; font-weight: 500;
}
.testimonial blockquote::before { content: "„"; color: var(--cyan); font-size: 1.4em; line-height: 0; vertical-align: -.2em; }
.testimonial cite { font-style: normal; color: var(--muted); font-size: 1rem; }
.testimonial cite b { display: block; color: var(--navy-700); }

/* ----- Faktenbox -------------------------------------------------------- */
.facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); }
.fact { padding: 1.3rem 1.5rem; border-bottom: 1px solid var(--line); }
.fact:nth-child(odd) { border-right: 1px solid var(--line); }
.fact dt { font-size: .82rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--blue); margin-bottom: .25rem; }
.fact dd { margin: 0; color: var(--navy-700); font-size: 1.02rem; }
@media (max-width: 620px) {
  .facts { grid-template-columns: 1fr; }
  .fact:nth-child(odd) { border-right: 0; }
}

/* ----- FAQ -------------------------------------------------------------- */
.faq { max-width: 800px; margin-inline: auto; }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: #fff; margin-bottom: .8rem; box-shadow: var(--shadow-sm); }
.faq summary {
  cursor: pointer; list-style: none; padding: 1.1rem 1.3rem; font-weight: 600; color: var(--navy);
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--blue); font-size: 1.4rem; font-weight: 700; flex: none; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > p { padding: 0 1.3rem 1.2rem; margin: 0; color: var(--muted); }

/* ----- CTA -------------------------------------------------------------- */
.cta { text-align: center; }
.cta h2 { color: #fff; }
.cta .lead { color: #c9cbe0; margin-bottom: 1.8rem; margin-inline: auto; }
.cta__actions { display: flex; flex-wrap: wrap; gap: .9rem; justify-content: center; align-items: center; }
.cta__direct { margin-top: 1.4rem; font-size: 1rem; color: #c9cbe0; }
.cta__direct a { color: #fff; font-weight: 600; }

/* ----- Kontaktformular (auf Navy) -------------------------------------- */
.contact-form { max-width: 640px; margin: 2.2rem auto 0; text-align: left; display: grid; gap: 1.1rem; }
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.contact-form .field { display: grid; gap: .35rem; }
.contact-form label { font-weight: 600; color: #fff; font-size: .95rem; }
.contact-form .req { color: var(--cyan); }
.contact-form input, .contact-form select, .contact-form textarea {
  font: inherit; width: 100%; padding: .72rem .85rem; border-radius: 10px;
  border: 1px solid rgba(255,255,255,.28); background: rgba(255,255,255,.08); color: #fff;
}
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: #aeb0cc; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: 2px solid var(--cyan); outline-offset: 1px; border-color: transparent;
}
.contact-form select option { color: var(--ink); } /* Dropdown-Liste auf hellem Systemhintergrund */
.contact-form .consent { display: flex; gap: .6rem; align-items: flex-start; font-size: .92rem; color: #c9cbe0; font-weight: 400; }
.contact-form .consent input { width: auto; flex: none; margin-top: .3rem; }
.contact-form .consent a { color: #fff; font-weight: 600; }
.contact-form .form-actions { display: flex; justify-content: center; margin-top: .3rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 560px) { .contact-form .row { grid-template-columns: 1fr; } }

/* ----- Footer ----------------------------------------------------------- */
.site-footer { background: #1f203f; color: #b9bbd4; font-size: .92rem; padding: 3rem 0 2rem; }
.site-footer a { color: #d8d9ec; }
.footer__grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.site-footer img { height: 38px; margin-bottom: .9rem; }
.site-footer h4 { color: #fff; font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: .8rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .4rem; }
.footer__legal { border-top: 1px solid rgba(255,255,255,.12); padding-top: 1.3rem; display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; justify-content: space-between; color: #8d8fb0; }
@media (max-width: 760px) { .footer__grid { grid-template-columns: 1fr; gap: 1.5rem; } }

[hidden] { display: none !important; }