/* KND Design System – site-v2 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --primary: #0f3d3a;
  --primary-hover: #0a2f2c;
  --accent: #059669;
  --accent-soft: #d1fae5;
  --bg: #ffffff;
  --bg-muted: #f8f9f8;
  --text: #111827;
  --text-muted: #4b5563;
  --border: #e5e7eb;
  --shadow: 0 20px 25px -5px rgb(0 0 0 / 0.06);
  --radius: 1rem;
  --header-h: 5rem;
  --font: 'Inter', system-ui, sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;
}

[data-theme='dark'] {
  --bg: #0b1211;
  --bg-muted: #111a19;
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --border: #1f2937;
  --accent-soft: #064e3b;
  --shadow: 0 20px 25px -5px rgb(0 0 0 / 0.35);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--primary); color: #fff; padding: .75rem 1rem;
}
.skip-link:focus { left: 0; }

.container { width: min(1280px, 100% - 3rem); margin-inline: auto; }

/* Banner */
.site-banner {
  text-align: center; padding: .65rem 1rem; font-size: .875rem; font-weight: 500;
  border-bottom: 1px solid var(--border);
}
.site-banner--construction { background: linear-gradient(to right, #fefce8, #fef9c3); color: #713f12; }
.site-banner--promotion { background: linear-gradient(to right, #ecfdf5, #d1fae5); color: #065f46; }
.site-banner a { color: #047857; font-weight: 600; text-decoration: underline; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--header-h);
}
.brand { display: flex; align-items: center; gap: .75rem; }
.brand__logo {
  width: 2.75rem; height: 2.75rem; border-radius: 1rem;
  background: var(--primary); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 1.1rem;
}
.brand__name { font-family: var(--font-heading); font-weight: 600; font-size: 1.35rem; color: var(--primary); }
[data-theme='dark'] .brand__name { color: #6ee7b7; }

.nav-desktop { display: none; gap: 1.5rem; font-size: .9rem; font-weight: 500; }
.header-actions { display: flex; align-items: center; gap: .5rem; }
.lang-select-wrap { display: inline-flex; align-items: center; }
.lang-select {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: .8rem;
  font-weight: 500;
  padding: .35rem .5rem;
  border-radius: .65rem;
  cursor: pointer;
  max-width: 7.5rem;
}
.lang-select:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.premium-lang-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.premium-lang-bar__inner {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: .5rem;
  padding: .5rem 0;
}
.mobile-menu__lang { margin-bottom: 1rem; }
.mobile-menu__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.icon-btn {
  border: 1px solid var(--border); background: var(--bg);
  width: 2.5rem; height: 2.5rem; border-radius: .75rem;
  cursor: pointer; color: var(--text);
  display: inline-grid; place-items: center;
  font-size: 1.1rem; line-height: 1;
  transition: background .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease;
}
.icon-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: var(--bg-muted);
}
.icon-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Tagmodus: Theme-Umschalter deutlicher absetzen */
.theme-toggle {
  border: 2px solid color-mix(in srgb, var(--primary) 40%, var(--border));
  background: var(--accent-soft);
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 600;
  box-shadow: 0 1px 3px rgb(15 61 58 / 0.12);
}
.theme-toggle:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 18%, #fff);
  color: var(--primary-hover);
  box-shadow: 0 2px 6px rgb(15 61 58 / 0.16);
}

[data-theme='dark'] .theme-toggle {
  border: 2px solid color-mix(in srgb, #6ee7b7 35%, var(--border));
  background: color-mix(in srgb, var(--primary) 55%, var(--bg-muted));
  color: #fde68a;
  box-shadow: 0 1px 4px rgb(0 0 0 / 0.35);
}
[data-theme='dark'] .theme-toggle:hover {
  border-color: #6ee7b7;
  background: color-mix(in srgb, var(--primary) 70%, var(--bg-muted));
  color: #fef3c7;
}

.menu-btn { display: inline-grid; }

@media (min-width: 900px) {
  .nav-desktop { display: flex; }
  .menu-btn { display: none; }
}

/* Mobile menu */
.mobile-menu {
  position: fixed; inset: 0; z-index: 60;
  background: rgb(0 0 0 / .55);
  display: none;
}
.mobile-menu.is-open { display: flex; }
.mobile-menu__panel {
  width: min(18rem, 85vw); height: 100%;
  background: var(--bg); padding: 1.5rem;
  border-right: 1px solid var(--border);
}
.mobile-menu__nav { display: flex; flex-direction: column; gap: .75rem; font-size: 1.05rem; }

/* Hero */
.hero {
  position: relative; min-height: clamp(320px, 55vh, 520px);
  display: grid; align-items: end; overflow: hidden;
}
.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    to top,
    rgb(15 61 58 / .95) 0%,
    rgb(15 61 58 / .78) 35%,
    rgb(15 61 58 / .35) 65%,
    transparent 100%
  );
}
.hero__content {
  position: relative; z-index: 1; padding: 2.5rem 0 3rem;
}
.hero__text-panel {
  max-width: 44rem;
  padding: 1.5rem 1.75rem;
  border-radius: 1.25rem;
  background: rgb(15 61 58 / .72);
  backdrop-filter: blur(6px);
  border: 1px solid rgb(255 255 255 / .12);
  box-shadow: 0 1rem 2.5rem rgb(0 0 0 / .25);
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.05; letter-spacing: -.03em; margin: 0 0 1rem;
  color: #fff;
  text-shadow: 0 2px 12px rgb(0 0 0 / .35);
}
.hero p {
  color: #f3f4f6;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  max-width: 42rem;
  margin: 0;
  line-height: 1.55;
  text-shadow: 0 1px 8px rgb(0 0 0 / .4);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.hero .btn { min-width: 11.5rem; padding: .9rem 1.5rem; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .9rem 1.5rem; border-radius: 1rem; font-weight: 600; font-size: .95rem;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-secondary { border: 1.5px solid #fff; color: #fff; }
.btn-secondary:hover { background: rgb(255 255 255 / .12); color: #fff; }
.btn-ghost { border: 1.5px solid var(--primary); color: var(--primary); }

/* Sections */
.section { padding: 4rem 0; }
.section--muted { background: var(--bg-muted); border-block: 1px solid var(--border); }
.section h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  letter-spacing: -.03em; margin: 0 0 .5rem;
}
.lead { color: var(--text-muted); font-size: 1.1rem; }

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
@media (min-width: 768px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat strong { display: block; font-size: 1.5rem; color: var(--primary); }
[data-theme='dark'] .stat strong { color: #6ee7b7; }

.cards { display: grid; gap: 1.25rem; }
@media (min-width: 768px) { .cards--3 { grid-template-columns: repeat(3, 1fr); } }
.card {
  border: 1px solid var(--border); border-radius: 1.25rem;
  padding: 1.75rem; background: var(--bg);
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card h3 { margin: 0 0 .5rem; font-size: 1.35rem; }
.card p { margin: 0; color: var(--text-muted); }
.card__link { margin-top: 1rem; display: inline-block; color: var(--accent); font-weight: 600; }

/* Article */
.article { padding: 2.5rem 0 4rem; }
.article__meta { color: var(--text-muted); font-size: .9rem; margin-bottom: 1rem; }
.article__tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.5rem; }
.tag {
  font-size: .75rem; font-weight: 600; padding: .25rem .65rem;
  border-radius: 999px; background: var(--accent-soft); color: #047857;
}
.tag--link {
  display: inline-flex; align-items: center;
  font-size: .9rem; padding: .55rem 1.1rem;
  border: 1.5px solid var(--primary); background: var(--bg);
  color: var(--primary); text-decoration: none;
  border-radius: 999px; cursor: pointer;
  transition: background .15s ease, color .15s ease, transform .15s ease;
}
.tag--link:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }
.tag--link.is-active { background: var(--primary); color: #fff; }
[data-theme='dark'] .tag--link { color: #6ee7b7; border-color: #6ee7b7; }
[data-theme='dark'] .tag--link:hover,
[data-theme='dark'] .tag--link.is-active { background: #065f46; color: #fff; }
.wissen-bereich {
  display: none;
  margin-top: 1rem;
  scroll-margin-top: 6rem;
}
.wissen-bereich.is-visible { display: block; }
.wissen-bereich__head {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: .75rem; margin-bottom: .5rem;
}
.wissen-bereich__head h3 { margin: 0; font-size: 1.2rem; }
.article h1 { font-family: var(--font-heading); font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.15; }
.article h2 { margin-top: 2rem; font-family: var(--font-heading); }
.article p, .article li { color: var(--text-muted); }
.article .teaser-x {
  border-left: 4px solid var(--primary); padding: 1rem 1.25rem;
  background: var(--bg-muted); border-radius: 0 1rem 1rem 0; margin: 1.5rem 0;
  font-style: italic;
}
.article figure { margin: 2rem 0; }
.article figcaption { font-size: .8rem; color: var(--text-muted); margin-top: .5rem; }
.video-card {
  display: block; margin-top: 1.25rem; border-radius: 1rem; overflow: hidden;
  border: 1px solid var(--border); text-decoration: none; color: inherit;
  transition: transform .15s ease, box-shadow .15s ease;
}
.video-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); color: inherit; }
.video-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.video-card__bar {
  display: flex; align-items: center; gap: .75rem; padding: .9rem 1rem;
  background: var(--bg-muted); font-weight: 600; font-size: .95rem;
}
.video-card__play {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.25rem; height: 2.25rem; border-radius: 999px;
  background: #b91c1c; color: #fff; font-size: .75rem; flex-shrink: 0;
}
.resource-list { list-style: none; padding: 0; }
.resource-list li { padding: .75rem 0; border-bottom: 1px solid var(--border); }

/* Premium teaser */
.premium-box {
  margin-top: 3rem; padding: 1.5rem; border-radius: 1rem;
  border: 1px dashed var(--border); background: var(--bg-muted);
}
.premium-box h3 { margin-top: 0; }

/* Premium door landing */
.premium-door {
  display: grid; gap: 2rem; margin: 2rem 0 3rem;
  align-items: center;
}
@media (min-width: 768px) {
  .premium-door { grid-template-columns: minmax(220px, 280px) 1fr; gap: 3rem; }
}
.premium-door__visual {
  display: flex; justify-content: center;
}
.premium-door__frame {
  position: relative; width: min(240px, 70vw); aspect-ratio: 3 / 5;
  border: 6px solid #8b7355;
  border-radius: .35rem .35rem 0 0;
  background: linear-gradient(180deg, #4a3728 0%, #2d2118 100%);
  box-shadow: inset 0 0 0 3px #c4a574, 0 1.5rem 2.5rem rgb(0 0 0 / .2);
}
.premium-door__panel {
  position: absolute; inset: 12% 10% 8%;
  border: 3px solid #6b5344;
  border-radius: .2rem;
  background: linear-gradient(145deg, #5c4033, #3d2b22);
}
.premium-door__panel::before,
.premium-door__panel::after {
  content: '';
  position: absolute; left: 12%; right: 12%;
  height: 3px; background: rgb(196 165 116 / .45);
}
.premium-door__panel::before { top: 28%; }
.premium-door__panel::after { top: 58%; }
.premium-door__knob {
  position: absolute; right: 18%; top: 50%;
  width: 1.1rem; height: 1.1rem; border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, #f5d76e, #b8860b);
  box-shadow: 0 2px 4px rgb(0 0 0 / .35);
}
.premium-door__keyhole {
  position: absolute; left: 50%; bottom: 22%;
  width: .55rem; height: .9rem;
  background: #1a1410; border-radius: 999px 999px 2px 2px;
  transform: translateX(-50%);
}
.premium-door__keyhole::after {
  content: '';
  position: absolute; left: 50%; bottom: -.35rem;
  width: .25rem; height: .35rem; background: #1a1410;
  transform: translateX(-50%);
}
.premium-door__copy h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 .75rem;
}
.premium-door__price {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 1rem;
}
[data-theme='dark'] .premium-door__price { color: #6ee7b7; }
.premium-door__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }

.payment-grid {
  display: grid; gap: 1rem; margin-top: 1.5rem;
}
@media (min-width: 640px) {
  .payment-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .payment-grid { grid-template-columns: repeat(3, 1fr); }
}
.payment-card {
  border: 1px solid var(--border); border-radius: 1.25rem;
  padding: 1.5rem; background: var(--bg);
  display: flex; flex-direction: column;
}
.payment-card .btn { margin-top: auto; width: 100%; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border); padding: 2rem 0;
  font-size: .875rem; color: var(--text-muted);
}
.footer-grid {
  display: grid; gap: 1.5rem;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; align-items: start; }
  .footer-grid--2 { grid-template-columns: 2fr 1fr; }
}
.social-links { display: flex; gap: 1rem; margin-top: .75rem; }
.social-links a { color: var(--accent); font-weight: 500; }
.social-links__pending { color: var(--text-muted); font-size: .9rem; }

/* FAQ Assistant */
.faq-fab {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 40;
  width: 3.25rem; height: 3.25rem; border-radius: 999px;
  background: var(--primary); color: #fff; border: none; cursor: pointer;
  box-shadow: var(--shadow);
}
.faq-panel {
  position: fixed; right: 1rem; bottom: 4.75rem; z-index: 40;
  width: min(22rem, calc(100vw - 2rem));
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 1rem; padding: 1rem; display: none;
  box-shadow: var(--shadow);
}
.faq-panel.is-open { display: block; }
.faq-panel button.topic {
  display: block; width: 100%; text-align: left;
  margin-bottom: .5rem; padding: .6rem .75rem;
  border: 1px solid var(--border); border-radius: .6rem;
  background: var(--bg-muted); cursor: pointer;
}
.faq-answer { font-size: .9rem; color: var(--text-muted); margin-top: .75rem; }

/* Print */
@media print {
  .site-header, .site-banner, .faq-fab, .faq-panel, .menu-btn, .icon-btn { display: none !important; }
  body { color: #000; }
  a { text-decoration: underline; }
}

/* Subpages */
.back-link { display: inline-block; margin-bottom: 1rem; color: var(--accent); font-weight: 600; }
.page-hero {
  background: var(--primary); color: #fff; padding: 3.5rem 0; text-align: center;
}
.page-hero h1 { font-family: var(--font-heading); font-size: clamp(2rem, 4vw, 3rem); margin: 0 0 .75rem; color: #fff; }
.page-hero p { color: #d1fae5; max-width: 40rem; margin: 0 auto; }

.cta-box {
  margin-top: 2.5rem; padding: 2rem; border-radius: 1.25rem;
  background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}
.cta-box h3 { margin-top: 0; }

.grid-2 { display: grid; gap: 1.25rem; }
@media (min-width: 768px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
.grid-3 { display: grid; gap: 1.25rem; }
@media (min-width: 768px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }
.grid-4 { display: grid; gap: 1.25rem; }
@media (min-width: 900px) { .grid-4 { grid-template-columns: repeat(4, 1fr); } }

.profile-grid { display: grid; gap: 2rem; margin-top: 2rem; }
@media (min-width: 768px) { .profile-grid { grid-template-columns: 2fr 3fr; align-items: start; } }
.profile-grid img { border-radius: 1.25rem; box-shadow: var(--shadow); object-fit: contain; max-height: 520px; }

.software-grid { display: grid; gap: 1.25rem; margin-top: 1.5rem; }
@media (min-width: 700px) { .software-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .software-grid { grid-template-columns: repeat(3, 1fr); } }
.software-item img { border-radius: .75rem; margin-bottom: .75rem; }

.vision-card { border: 1px solid var(--border); border-radius: 1.25rem; overflow: hidden; }
.vision-card img { width: 100%; height: 12rem; object-fit: cover; }
.vision-card__body { padding: 1.25rem; }
.vision-card h3 { margin: 0 0 .5rem; font-size: 1rem; }
.vision-card--link {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.vision-card--link:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 24px rgb(0 0 0 / .08);
  transform: translateY(-2px);
}
.vision-card--link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.vision-card--link p { color: var(--text-muted); }

.legal h2 { font-family: var(--font-heading); font-size: 1.25rem; margin-top: 2rem; }
.legal h3 { font-size: 1rem; margin-top: 1.25rem; }
.legal p, .legal li { color: var(--text-muted); }

.contact-layout { display: grid; gap: 2rem; margin-top: 2rem; }
@media (min-width: 900px) { .contact-layout { grid-template-columns: 3fr 2fr; } }

.form-field { display: grid; gap: .35rem; margin-bottom: 1rem; }
.form-field label { font-size: .9rem; font-weight: 500; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: .75rem 1rem; border: 1px solid var(--border);
  border-radius: .75rem; background: var(--bg); color: var(--text); font: inherit;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--primary); outline: none;
}
.form-row { display: grid; gap: 1rem; }
@media (min-width: 600px) { .form-row { grid-template-columns: 1fr 1fr; } }

.alert { padding: 1rem 1.25rem; border-radius: .75rem; margin: 1rem 0; }
.alert--success { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; }
.alert--error { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }

.error-page {
  min-height: 70vh; display: grid; place-items: center; text-align: center; padding: 2rem;
}
.error-page__code {
  font-family: var(--font-heading); font-size: clamp(4rem, 12vw, 7rem);
  color: var(--primary); line-height: 1;
}
[data-theme='dark'] .error-page__code { color: #6ee7b7; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}