/* KGT — Kusenko Gatzsch Technologies
   Dunkles, professionelles Corporate Design */

:root {
  --bg: #0a0a0b;
  --bg-elevated: #131316;
  --surface: #1a1a1e;
  --surface-light: #232329;
  --text: #f4f4f5;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;
  --accent: #5b8cff;
  --accent-hover: #3d74f7;
  --accent-glow: rgba(91, 140, 255, 0.18);
  --cyan: #06b6d4;
  --cyan-bg: rgba(6, 182, 212, 0.1);
  --purple: #a855f7;
  --purple-bg: rgba(168, 85, 247, 0.1);
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.1);
  --orange: #f59e0b;
  --orange-bg: rgba(245, 158, 11, 0.1);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --border: #27272b;
  --border-strong: #3f3f46;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --max-width: 1120px;
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover {
  color: var(--accent);
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

.header {
  position: sticky;
  top: 0;
  background: rgba(10, 10, 11, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.logo span {
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav a:hover {
  color: var(--text);
  background: var(--surface);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
}

.menu-toggle:hover {
  background: var(--surface);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.btn:hover {
  background: var(--surface-light);
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn-subtle {
  background: transparent;
  border-color: var(--border);
  color: var(--text-muted);
}

.btn-subtle:hover {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}

/* Hero */

.hero {
  padding: 110px 0 90px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: "";
  position: absolute;
  top: -140px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  position: relative;
}

.hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.4rem, 6.5vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 22px;
}

.hero h1 span {
  color: var(--accent);
}

.hero .tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 28px;
}

.hero .cta {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-partners {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 70px;
  flex-wrap: wrap;
}

.hero-partner {
  text-align: center;
}

.hero-partner .avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 auto 14px;
}

.hero-partner .name {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 2px;
}

.hero-partner .role {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Sections */

.section {
  padding: 84px 0;
  border-top: 1px solid var(--border);
}

.section-header {
  margin-bottom: 44px;
  max-width: 760px;
}

.section-label {
  display: inline-block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 650;
  margin-bottom: 10px;
}

.section h2 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.section > .container > p,
.section-header p {
  color: var(--text-muted);
  max-width: 720px;
  margin-bottom: 18px;
}

/* Brand Cards (Unternehmen) */

.brand-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 640px) {
  .brand-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .brand-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.brand-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.brand-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

a.brand-card {
  text-decoration: none;
  color: inherit;
}

.brand-card .status {
  align-self: flex-start;
  margin-bottom: 16px;
}

.brand-card h3 {
  font-size: 1.25rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.brand-card p {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}

.brand-meta {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.link-arrow {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
}

a.brand-card:hover .link-arrow {
  color: var(--accent-hover);
}

/* Status badges */

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status-active {
  background: var(--green-bg);
  color: var(--green);
  border-color: rgba(34, 197, 94, 0.25);
}

.status-active::before {
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.status-live {
  background: var(--cyan-bg);
  color: var(--cyan);
  border-color: rgba(6, 182, 212, 0.25);
}

.status-live::before {
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.status-dev {
  background: var(--orange-bg);
  color: var(--orange);
  border-color: rgba(245, 158, 11, 0.25);
}

.status-dev::before {
  background: var(--orange);
  box-shadow: 0 0 8px var(--orange);
}

.status-vision {
  background: var(--purple-bg);
  color: var(--purple);
  border-color: rgba(168, 85, 247, 0.25);
}

.status-vision::before {
  background: var(--purple);
  box-shadow: 0 0 8px var(--purple);
}

.status-partner {
  background: var(--red-bg);
  color: var(--red);
  border-color: rgba(239, 68, 68, 0.25);
}

.status-partner::before {
  background: var(--red);
  box-shadow: 0 0 8px var(--red);
}

/* Value list */

.value-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 32px;
}

@media (min-width: 640px) {
  .value-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.value-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.value-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.value-card h4::before {
  content: "◆";
  color: var(--accent);
  font-size: 0.8rem;
}

.value-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.6;
}

/* Partner cards */

.partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 700px) {
  .partner-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.partner-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
}

.partner-card .avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--surface-light);
  border: 2px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 750;
  color: var(--text);
  margin-bottom: 20px;
}

.partner-card h3 {
  font-size: 1.3rem;
  font-weight: 750;
  margin-bottom: 6px;
}

.partner-card .role {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 14px;
}

.partner-card p {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.partner-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.partner-card .tag {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 5px 10px;
  border-radius: 999px;
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 14px;
  margin-top: 28px;
}

@media (min-width: 640px) {
  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: border-color var(--transition), transform var(--transition);
}

.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.contact-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--accent-glow);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-card .label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 2px;
}

.contact-card .value {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text);
}

.contact-card a {
  color: var(--text);
}

.contact-card a:hover {
  color: var(--accent);
}

.contact-note {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-top: 24px;
}

.contact-note h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.contact-note p {
  color: var(--text-muted);
  font-size: 0.94rem;
  margin-bottom: 0;
}

/* CTA Section */

.cta-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-section .container {
  text-align: center;
  max-width: 780px;
}

.cta-section h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 16px;
}

.cta-section p {
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* Footer */

.footer {
  padding: 44px 0;
  color: var(--text-dim);
  font-size: 0.88rem;
}

.footer .container {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

@media (min-width: 640px) {
  .footer .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer a {
  color: var(--text-muted);
}

.footer a:hover {
  color: var(--accent);
}

.footer .credit a {
  font-weight: 600;
  color: var(--text);
}

/* Legal */

.legal {
  padding: 90px 0;
}

.legal h1 {
  font-size: 2.2rem;
  margin-bottom: 28px;
  letter-spacing: -0.03em;
}

.legal h2 {
  font-size: 1.25rem;
  margin-top: 32px;
  margin-bottom: 14px;
  font-weight: 700;
}

.legal p,
.legal li {
  color: var(--text-muted);
  margin-bottom: 12px;
}

.legal ul {
  margin-left: 22px;
  margin-bottom: 18px;
}

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

.placeholder {
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-style: italic;
  margin: 8px 0;
}

/* Mobile Nav */

@media (max-width: 700px) {
  .menu-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: 18px 24px;
    gap: 4px;
    display: none;
    align-items: stretch;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px 14px;
  }

  .hero-partners {
    gap: 32px;
  }

  .partner-grid {
    grid-template-columns: 1fr;
  }
}

/* Utilities */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}