/* Corthix – one-pager styles
   Design "Orchestrierung": dunkle Leitstand-Flächen, leuchtender Verlauf aus
   den Corthix-Farben (Hellblau -> Grün), helle Abschnitte dazwischen, Zeitleiste,
   Terminal, Glaskarten, laufendes Werkzeug-Band, sanftes Einblenden. */

/* ---------- Fonts (self-hosted, GDPR-safe) ---------- */
@font-face {
  font-family: "Lato";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/lato-400.woff2") format("woff2");
}
@font-face {
  font-family: "Lato";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/lato-700.woff2") format("woff2");
}
@font-face {
  font-family: "Lato";
  font-style: normal;
  font-weight: 900;
  font-display: swap;
  src: url("../fonts/lato-900.woff2") format("woff2");
}

/* ---------- Design tokens ---------- */
:root {
  /* Markenfarben (aus der Original-Website, siehe CLAUDE.md) */
  --color-text: #161212;
  --color-primary: #196b8d;
  --color-primary-light: #6ec1e4;
  --color-accent: #61ce70;
  --color-muted: #54595f;

  --color-bg: #ffffff;
  --color-bg-alt: #fafafa;
  --color-tint: #f1f8fb;
  --color-bg-dark: #161212;
  --color-night: #0b1419;
  --color-night-2: #10222b;
  --color-night-3: #163240;
  --color-text-inverse: #ffffff;
  --color-on-dark: #dbe7ec;
  --color-on-dark-muted: #93a9b3;
  --color-border: #e6ecef;

  --grad: linear-gradient(95deg, var(--color-primary-light) 0%, var(--color-accent) 100%);
  --grad-deep: linear-gradient(135deg, #0f3a4c 0%, var(--color-primary) 55%, #2a9d8f 100%);

  --font-base: "Lato", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --container: 1180px;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 10px rgba(11, 20, 25, 0.06);
  --shadow-md: 0 24px 50px -24px rgba(11, 20, 25, 0.35);
  --glow: 0 30px 80px -30px rgba(110, 193, 228, 0.55);
  --space-section: clamp(4rem, 8vw, 7rem);
  --transition: 180ms ease;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 1.0625rem;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); }
code { font-family: var(--font-mono); font-size: 0.9em; background: var(--color-tint); padding: 0.1em 0.4em; border-radius: 6px; }

h1, h2, h3 { line-height: 1.12; margin: 0 0 0.6em; font-weight: 900; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.75rem); }
h3 { font-size: 1.2rem; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

section { padding-block: var(--space-section); position: relative; }
section[id] { scroll-margin-top: 88px; }

.grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-size: 0.8rem; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: ""; width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-accent); box-shadow: 0 0 0 4px rgba(97, 206, 112, 0.2);
}

.lede { font-size: 1.15rem; color: var(--color-muted); max-width: 62ch; }

.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;
}

/* ---------- Section backgrounds ---------- */
.section-alt, .section-tint { background: var(--color-tint); }
.section-dark {
  background:
    radial-gradient(50% 60% at 90% 10%, rgba(110, 193, 228, 0.16), transparent 70%),
    radial-gradient(40% 50% at 0% 100%, rgba(97, 206, 112, 0.12), transparent 70%),
    var(--color-night);
  color: var(--color-on-dark);
}
.section-gradient { background: var(--grad-deep); color: #e8f5f9; }
.section-dark h2, .section-dark h3, .section-gradient h2, .section-gradient h3 { color: #fff; }
.section-dark .lede { color: var(--color-on-dark-muted); }
.section-gradient .lede, .section-gradient p { color: #d7ecf3; }
.section-dark .eyebrow, .section-gradient .eyebrow { color: var(--color-primary-light); }
.section-gradient .eyebrow { color: #fff; }

/* ---------- Skip link ---------- */
/* Fully off-screen + invisible + non-interactive until focused: translateY
   (relative to the element's own height) hides it regardless of its
   rendered size, unlike a fixed negative "top" offset. */
.skip-link {
  position: absolute; left: 1rem; top: 1rem; z-index: 1000;
  background: var(--color-bg-dark); color: var(--color-text-inverse);
  padding: 0.75rem 1.25rem; border-radius: var(--radius-sm);
  transform: translateY(-150%); opacity: 0; pointer-events: none;
  transition: transform var(--transition), opacity var(--transition);
}
.skip-link:focus { transform: translateY(0); opacity: 1; pointer-events: auto; }

/* ---------- Focus states ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: inherit; font-weight: 900; font-size: 1rem;
  padding: 1rem 1.6rem; border-radius: 999px; border: 0; cursor: pointer;
  text-decoration: none; transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}
.btn:hover { transform: translateY(-2px); }
.btn-hero {
  background: var(--grad); color: var(--color-night);
  box-shadow: 0 16px 34px -14px rgba(97, 206, 112, 0.75);
}
.btn-hero:hover { filter: brightness(1.06); }
.btn-icon { width: 20px; height: 20px; }

/* ---------- Header (dark, glass) ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11, 20, 25, 0.72);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.is-scrolled { background: rgba(11, 20, 25, 0.95); box-shadow: 0 10px 30px -18px rgba(0, 0, 0, 0.8); }

.header-inner {
  max-width: var(--container); margin-inline: auto;
  padding: 0.6rem clamp(1.25rem, 4vw, 2.5rem);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.logo-link { display: inline-flex; align-items: center; }
.logo-link img { height: 46px; width: auto; }

.nav-toggle {
  display: none; align-items: center; justify-content: center;
  width: 44px; height: 44px; background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14); border-radius: var(--radius-sm); cursor: pointer;
}
.nav-toggle-icon, .nav-toggle-icon::before, .nav-toggle-icon::after {
  display: block; width: 20px; height: 2px; background: #fff; position: relative;
  transition: transform var(--transition);
}
.nav-toggle-icon::before, .nav-toggle-icon::after { content: ""; position: absolute; }
.nav-toggle-icon::before { top: -6px; }
.nav-toggle-icon::after { top: 6px; }

.main-nav ul { list-style: none; display: flex; align-items: center; gap: clamp(0.5rem, 1.6vw, 1.5rem); margin: 0; padding: 0; }
.main-nav a {
  color: var(--color-on-dark); font-weight: 700; font-size: 0.95rem; text-decoration: none;
  padding: 0.45rem 0.2rem; position: relative;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; border-radius: 2px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform var(--transition);
}
.main-nav a:hover, .main-nav a:focus-visible { color: #fff; }
.main-nav a:hover::after { transform: scaleX(1); }

.nav-cta {
  font-family: inherit; font-size: 0.95rem; font-weight: 900; border: none;
  background: var(--grad); color: var(--color-night) !important;
  padding: 0.6rem 1.25rem; border-radius: 999px; cursor: pointer;
  transition: filter var(--transition), transform var(--transition);
}
.nav-cta:hover { filter: brightness(1.08); transform: translateY(-1px); }

/* The <nav> always carries the `hidden` attribute in markup (JS toggles it
   only below the breakpoint); above the breakpoint it must render regardless,
   since the hamburger that would ever remove `hidden` is display:none there. */
@media (min-width: 861px) {
  .main-nav[hidden] { display: block; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-night); border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-md);
  }
  .main-nav[hidden] { display: none; }
  .main-nav ul { flex-direction: column; align-items: stretch; padding: 1rem clamp(1.25rem, 4vw, 2.5rem) 1.5rem; gap: 0.25rem; }
  .main-nav a { display: block; padding: 0.7rem 0; }
  .main-nav li:has(.nav-cta) { margin-top: 0.5rem; }
  .main-nav .nav-cta { width: 100%; padding: 0.8rem 1rem; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; isolation: isolate;
  background:
    radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(170deg, var(--color-night) 0%, var(--color-night-2) 60%, var(--color-night-3) 100%);
  color: var(--color-on-dark);
  padding-block: clamp(3.5rem, 8vw, 6.5rem) clamp(4rem, 9vw, 7rem);
}
.hero-decor { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.hero-decor::before, .hero-decor::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(80px);
}
.hero-decor::before {
  width: 38rem; height: 38rem; top: -16rem; right: -10rem;
  background: radial-gradient(circle, rgba(110, 193, 228, 0.55), transparent 65%);
  animation: drift 18s ease-in-out infinite alternate;
}
.hero-decor::after {
  width: 30rem; height: 30rem; bottom: -16rem; left: -10rem;
  background: radial-gradient(circle, rgba(97, 206, 112, 0.4), transparent 65%);
  animation: drift 22s ease-in-out infinite alternate-reverse;
}
@keyframes drift { to { transform: translate(-50px, 40px) scale(1.1); } }

.hero-inner {
  max-width: var(--container); margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 5vw, 4rem); align-items: center;
}
.hero h1 { color: #fff; }
.hero .lede { color: #b9cdd5; font-size: 1.22rem; }
.hero .eyebrow { color: var(--color-primary-light); }

.hero-ctas { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.75rem; margin-top: 2rem; }
.phone-link { display: inline-flex; align-items: center; gap: 0.8rem; text-decoration: none; color: inherit; }
.phone-icon {
  width: 48px; height: 48px; border-radius: 50%; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(110, 193, 228, 0.14); color: var(--color-primary-light);
  border: 1px solid rgba(110, 193, 228, 0.35);
}
.phone-icon svg { width: 22px; height: 22px; }
.phone-text { display: flex; flex-direction: column; line-height: 1.25; }
.phone-label { font-size: 0.8rem; color: var(--color-on-dark-muted); }
.phone-number { font-size: 1.2rem; font-weight: 900; color: #fff; }
.phone-link:hover .phone-number { text-decoration: underline; text-underline-offset: 4px; }

.hero-badges { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.5rem; }
.hero-badge {
  display: flex; align-items: center; gap: 0.8rem;
  background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px; padding: 0.45rem 1.1rem 0.45rem 0.45rem;
}
.hero-badge img { width: 44px; height: 44px; object-fit: contain; }
.hero-badge p { margin: 0; }
.hero-badge-title { font-weight: 900; color: #fff; font-size: 0.95rem; }
.hero-badge-caption { font-size: 0.8rem; color: var(--color-on-dark-muted); }

.hero-media { position: relative; }
.hero-card {
  background: #fff; border-radius: var(--radius); padding: 0.75rem;
  box-shadow: var(--glow), 0 40px 80px -40px rgba(0, 0, 0, 0.8);
  transform: perspective(1400px) rotateY(-7deg) rotateX(3deg);
  transition: transform 0.4s ease;
}
.hero-card:hover { transform: perspective(1400px) rotateY(-2deg); }
.hero-card img { border-radius: 12px; }
.hero-chip {
  position: absolute; z-index: 2;
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.85rem; font-weight: 900; white-space: nowrap;
  padding: 0.6rem 1rem; border-radius: 999px;
  box-shadow: 0 16px 36px -14px rgba(0, 0, 0, 0.6);
  animation: float-y 5s ease-in-out infinite;
}
.hero-chip--a { top: -1rem; left: 1.5rem; background: var(--color-night-3); color: #fff; border: 1px solid rgba(110, 193, 228, 0.4); }
.hero-chip--a .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 4px rgba(97, 206, 112, 0.25); animation: pulse 1.6s ease-in-out infinite; }
.hero-chip--b { bottom: -1.1rem; right: 1.5rem; background: var(--grad); color: var(--color-night); animation-delay: -2.5s; }
@keyframes float-y { 0%, 100% { translate: 0 0; } 50% { translate: 0 -8px; } }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(97, 206, 112, 0); } }

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-card { transform: none; }
}
@media (max-width: 480px) {
  .hero-chip { font-size: 0.74rem; padding: 0.45rem 0.8rem; }
  .hero-badge { padding-right: 0.8rem; }
}

/* ---------- Tool marquee ---------- */
.tool-band { background: var(--color-night); padding: 1.6rem 0 2rem; border-top: 1px solid rgba(255, 255, 255, 0.06); }
.tool-band-label {
  text-align: center; margin: 0 0 1rem; padding-inline: 1rem;
  font-size: 0.78rem; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-on-dark-muted);
}
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track { display: flex; width: max-content; animation: marquee 36s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee ul { display: flex; align-items: center; gap: 0.9rem; list-style: none; margin: 0; padding: 0 0.45rem; }
.marquee li {
  font-family: var(--font-mono); font-size: 0.95rem; font-weight: 700; white-space: nowrap;
  color: var(--color-on-dark); padding: 0.55rem 1.1rem; border-radius: 999px;
  background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.1);
}
.marquee li:nth-child(3n+1) { border-color: rgba(110, 193, 228, 0.45); }
.marquee li:nth-child(3n+2) { border-color: rgba(97, 206, 112, 0.45); }
@keyframes marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; flex-wrap: wrap; width: auto; justify-content: center; }
  .marquee-track > ul[aria-hidden] { display: none; }
  .marquee ul { flex-wrap: wrap; justify-content: center; row-gap: 0.6rem; }
}

/* ---------- Explainer: Zeitleiste ---------- */
.two-col {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 6vw, 5rem); align-items: center;
}
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; } }

.steps-card {
  background: var(--color-bg); border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.4rem); box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border); position: relative; overflow: hidden;
}
.steps-card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 5px; background: var(--grad); }
.steps-list { list-style: none; counter-reset: step; margin: 1.5rem 0; padding: 0; position: relative; }
.steps-list::before {
  content: ""; position: absolute; left: 19px; top: 10px; bottom: 10px; width: 2px;
  background: linear-gradient(var(--color-primary-light), var(--color-accent));
}
.steps-list li {
  counter-increment: step; position: relative; padding: 0.55rem 0 0.55rem 3.4rem; min-height: 2.8rem;
  display: flex; align-items: center;
}
.steps-list li::before {
  content: counter(step);
  position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; color: #fff; background: var(--color-primary);
  box-shadow: 0 0 0 5px var(--color-bg), 0 10px 20px -8px rgba(25, 107, 141, 0.7);
}
.steps-list li:last-child::before { background: var(--color-accent); color: var(--color-night); }

/* ---------- Einstieg: Schrittkarten ---------- */
.einstieg-layout {
  display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 6vw, 5rem); align-items: start;
}
@media (max-width: 960px) { .einstieg-layout { grid-template-columns: 1fr; } }
.einstieg-intro { position: sticky; top: 110px; }
@media (max-width: 960px) { .einstieg-intro { position: static; } }


.einstieg-steps { list-style: none; margin: 0; padding: 0; counter-reset: es; display: grid; gap: 1rem; }
.einstieg-steps li {
  counter-increment: es; position: relative;
  background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius); padding: 1.4rem 1.5rem 1.4rem 4.6rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.einstieg-steps li:hover { background: rgba(255, 255, 255, 0.07); border-color: rgba(110, 193, 228, 0.35); transform: translateX(4px); }
.einstieg-steps li::before {
  content: counter(es, decimal-leading-zero);
  position: absolute; left: 1.4rem; top: 1.3rem;
  font-family: var(--font-mono); font-weight: 700; font-size: 1.05rem;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.einstieg-steps p { margin: 0; color: var(--color-on-dark); }
.einstieg-steps code { background: rgba(110, 193, 228, 0.15); color: var(--color-primary-light); }

/* ---------- Carousel (Funktionen) ---------- */
#funktionen h2 { max-width: 22ch; }
.carousel { position: relative; margin-top: 2.5rem; }
.carousel-track {
  position: relative; overflow: hidden; border-radius: var(--radius);
  background: var(--color-bg); box-shadow: var(--shadow-md); padding: clamp(1.5rem, 4vw, 3rem);
}
.carousel-slide { display: none; }
.carousel-slide[data-active="true"] {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem); align-items: center;
  animation: slide-in 0.4s ease;
}
@keyframes slide-in { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: none; } }
@media (max-width: 860px) { .carousel-slide[data-active="true"] { grid-template-columns: 1fr; } }
.carousel-slide ul { list-style: none; padding: 0; margin: 1rem 0 0; display: grid; gap: 0.8rem; }
.carousel-slide li { position: relative; padding-left: 2rem; }
.carousel-slide li::before {
  content: ""; position: absolute; left: 0; top: 0.35em; width: 1.2rem; height: 1.2rem; border-radius: 50%;
  background: var(--grad);
}
.carousel-media img { filter: drop-shadow(0 24px 30px rgba(11, 20, 25, 0.25)); }

.carousel-controls { display: flex; align-items: center; justify-content: center; gap: 1.25rem; margin-top: 1.75rem; }
.carousel-btn {
  width: 48px; height: 48px; border-radius: 50%; border: 0;
  background: var(--color-night); color: #fff; cursor: pointer; font-size: 1.3rem;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform var(--transition), background var(--transition);
}
.carousel-btn:hover { background: var(--color-primary); transform: scale(1.06); }
.carousel-dots { display: flex; gap: 0.6rem; }
.carousel-dot { width: 12px; height: 12px; border-radius: 999px; border: none; background: #c9d6dc; cursor: pointer; padding: 0; transition: width var(--transition), background var(--transition); }
.carousel-dot[aria-current="true"] { width: 32px; background: var(--color-primary); }

/* ---------- Architecture (Glaskarten auf Verlauf) ---------- */
.architecture { overflow: hidden; }
.architecture::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px) 0 0 / 26px 26px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 70%);
          mask-image: linear-gradient(180deg, #000, transparent 70%);
  pointer-events: none;
}
.architecture .container { position: relative; }
.architecture-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.25rem, 3vw, 2.5rem);
  margin-top: 3rem; counter-reset: arch;
}
@media (max-width: 860px) { .architecture-grid { grid-template-columns: 1fr; } }
.architecture-card {
  counter-increment: arch; position: relative;
  background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.22);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-radius: var(--radius); padding: 2rem 1.75rem 1.75rem;
  transition: transform var(--transition), background var(--transition);
}
.architecture-card:hover { transform: translateY(-4px); background: rgba(255, 255, 255, 0.15); }
.architecture-card::before {
  content: counter(arch, decimal-leading-zero);
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 14px; margin-bottom: 1.2rem;
  font-weight: 900; color: var(--color-night); background: #fff;
}
.architecture-card:nth-child(3)::before { background: var(--color-accent); }
@media (min-width: 861px) {
  .architecture-card:not(:last-child)::after {
    content: "→"; position: absolute; right: calc(-1 * clamp(1.25rem, 3vw, 2.5rem) / 2 - 0.6rem); top: 2.6rem;
    font-size: 1.4rem; font-weight: 900; color: #fff; opacity: 0.8;
  }
}
.architecture-card h3 { color: #fff; }
.architecture-card p { margin: 0; color: #d7ecf3; }

/* ---------- Use cases ---------- */
#use-cases > .container > h2 { margin-bottom: 1rem; }
.use-case {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem); align-items: center;
  padding-block: clamp(2.5rem, 5vw, 4rem);
}
.use-case:not(:last-child) { border-bottom: 1px solid var(--color-border); }
.use-case:nth-of-type(even) .use-case-copy { order: 2; }
@media (max-width: 860px) {
  .use-case { grid-template-columns: 1fr; }
  .use-case:nth-of-type(even) .use-case-copy { order: 0; }
}
.use-case-number {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-weight: 900; font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-primary); margin-bottom: 0.8rem;
}
.use-case-number::before {
  content: ""; width: 34px; height: 4px; border-radius: 4px; background: var(--grad);
}
.use-case-copy > ul:not(.benefit-list) { list-style: none; padding: 0; margin: 1rem 0 1.5rem; counter-reset: uc; display: grid; gap: 0.5rem; }
.use-case-copy > ul:not(.benefit-list) li { counter-increment: uc; position: relative; padding-left: 2.3rem; }
.use-case-copy > ul:not(.benefit-list) li::before {
  content: counter(uc); position: absolute; left: 0; top: 0.1em;
  width: 1.6rem; height: 1.6rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 900; color: var(--color-primary); background: var(--color-tint);
  border: 1px solid rgba(25, 107, 141, 0.25);
}
.use-case-copy > p strong { color: var(--color-primary); }
.benefit-list {
  list-style: none; margin: 0.5rem 0 0; padding: 1.1rem 1.25rem;
  display: grid; gap: 0.55rem;
  background: linear-gradient(135deg, rgba(97, 206, 112, 0.12), rgba(110, 193, 228, 0.12));
  border-radius: var(--radius-sm); border: 1px solid rgba(97, 206, 112, 0.3);
}
.benefit-list li { position: relative; padding-left: 1.9rem; font-weight: 700; }
.benefit-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0.05em;
  width: 1.3rem; height: 1.3rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; color: #fff; background: var(--color-accent);
}
.use-case-media {
  background: #fff; border-radius: var(--radius); padding: clamp(0.75rem, 2vw, 1.5rem);
  box-shadow: var(--shadow-md); border: 1px solid var(--color-border);
  position: relative;
}
.use-case-media::after {
  content: ""; position: absolute; inset: auto -12px -12px auto; width: 60%; height: 60%;
  border-radius: var(--radius); background: var(--grad); opacity: 0.18; z-index: -1;
}
.use-case { position: relative; z-index: 0; }

/* ---------- FAQ (zweispaltig) ---------- */
.faq-layout { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.faq-head { position: sticky; top: 110px; }
@media (max-width: 860px) { .faq-layout { grid-template-columns: 1fr; } .faq-head { position: static; } }
.faq-list { display: grid; gap: 0.85rem; }
.faq-item {
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  padding: 0 1.4rem; box-shadow: var(--shadow-sm); transition: box-shadow var(--transition);
}
.faq-item[open] { box-shadow: var(--shadow-md); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 1.15rem 0; font-weight: 900;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; flex-shrink: 0; width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: var(--color-primary); background: var(--color-tint);
  transition: transform var(--transition), background var(--transition);
}
.faq-item[open] summary::after { transform: rotate(45deg); background: var(--color-accent); color: var(--color-night); }
.faq-item p { margin: 0 0 1.2rem; color: var(--color-muted); }

/* ---------- Kontakt-Band ---------- */
.cta-band {
  background:
    radial-gradient(50% 80% at 100% 0%, rgba(97, 206, 112, 0.35), transparent 60%),
    radial-gradient(50% 80% at 0% 100%, rgba(110, 193, 228, 0.35), transparent 60%),
    var(--color-night);
  color: var(--color-on-dark);
}
.cta-band-inner {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 2.5rem; align-items: center;
  background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: calc(var(--radius) + 8px); padding: clamp(2rem, 5vw, 3.5rem);
}
@media (max-width: 860px) { .cta-band-inner { grid-template-columns: 1fr; } }
.cta-band h2 { color: #fff; }
.cta-band .lede { color: var(--color-on-dark-muted); }
.cta-band .eyebrow { color: var(--color-primary-light); }
.cta-band .hero-ctas { margin-top: 0; flex-direction: column; align-items: flex-start; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-bg-dark); color: rgba(255, 255, 255, 0.78); padding-block: 3.5rem 2.5rem; }
.footer-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; align-items: start; }
.footer-intro { grid-column: 1 / -1; margin: 0 0 1rem; color: rgba(255, 255, 255, 0.9); }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-org img { height: 44px; width: auto; margin-bottom: 0.8rem; }
.footer-org .f-title { font-weight: 900; margin: 0 0 0.25rem; color: #fff; }
.footer-org address { font-style: normal; font-size: 0.92rem; }
.footer-brand img { height: 52px; width: auto; margin-bottom: 1rem; }
.footer-legal { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-legal a { color: rgba(255, 255, 255, 0.85); }
.footer-legal a:hover { color: var(--color-accent); }

/* ---------- Reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }
@media (max-width: 600px) {
  .einstieg-steps li { padding: 1.2rem 1.2rem 1.3rem; }
  .einstieg-steps li::before { position: static; display: block; margin-bottom: 0.4rem; }
}

/* ---------- Legal dialog (Datenschutz) ---------- */
.footer-legal-btn, .legal-link {
  background: none; border: 0; padding: 0; font: inherit; cursor: pointer;
  color: rgba(255, 255, 255, 0.85); text-decoration: underline; text-underline-offset: 3px;
}
.footer-legal-btn:hover { color: var(--color-accent); }
.legal-link { color: var(--color-primary); }
dialog.legal-dialog {
  border: 0; border-radius: var(--radius); padding: 0; width: min(760px, 92vw); max-height: 88vh;
  background: var(--color-bg); color: var(--color-text); box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.6);
}
dialog.legal-dialog::backdrop { background: rgba(11, 20, 25, 0.75); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.legal-dialog-header {
  position: sticky; top: 0; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.1rem 1.5rem; background: var(--color-night); color: #fff;
}
.legal-dialog-header h2 { margin: 0; font-size: 1.3rem; color: #fff; }
.legal-dialog-close {
  width: 36px; height: 36px; border-radius: 50%; border: 0; cursor: pointer; flex-shrink: 0;
  background: var(--grad); color: var(--color-night); font-size: 1.2rem; font-weight: 900;
}
.legal-dialog-body { padding: 1.5rem; overflow-y: auto; max-height: calc(88vh - 70px); }
.legal-dialog-body h3 { font-size: 1.05rem; margin: 1.6rem 0 0.5rem; }
.legal-dialog-body p { font-size: 0.95rem; color: #2b3338; }
.legal-meta { color: var(--color-muted) !important; font-size: 0.85rem !important; }