/* ============================================================
   Components — shared across all pages
   ============================================================ */

/* ---- Header / Navigation ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid var(--color-line);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  transition:
    background var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 16px 44px -30px rgba(7, 13, 28, 0.7);
}

/* ---- Promo bar (Partner / Zuitable) ---- */
.promo-bar {
  position: relative;
  z-index: 90;
  background: var(--color-ink);
  color: #fff;
}

.promo-bar[hidden] {
  display: none;
}

.promo-inner {
  position: relative;
  width: min(var(--container-max), calc(100vw - 2 * var(--container-pad)));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  padding: 0.5rem 2.4rem;
  min-height: 2.55rem;
}

.promo-text {
  font-size: var(--text-xs);
  letter-spacing: 0.01em;
  color: rgba(255, 255, 255, 0.82);
}

.promo-text strong {
  color: #fff;
  font-weight: 700;
}

.promo-code {
  font-weight: 800;
  color: var(--color-accent-300);
  letter-spacing: 0.04em;
}

.promo-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-accent-500);
  color: var(--color-ink);
  font-size: var(--text-2xs);
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.34rem 0.9rem;
  border-radius: var(--radius-pill);
  transition: background var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.promo-cta:hover {
  background: var(--color-accent-300);
  transform: translateY(-1px);
}

.promo-close {
  position: absolute;
  right: 0.3rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.75rem;
  height: 1.75rem;
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
  border-radius: var(--radius-xs);
  transition: color var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard);
}

.promo-close:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.nav-shell {
  position: relative;
  width: min(var(--container-max), calc(100vw - 2 * var(--container-pad)));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-block: clamp(0.8rem, 0.6rem + 0.5vw, 1.15rem);
}

.brand {
  margin-right: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}

.brand-mark {
  width: 2.4rem;
  height: 2.4rem;
  flex: none;
  background: url(../images/logo-mark.png) center / contain no-repeat;
  font-size: 0;
  color: transparent;
  user-select: none;
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 0.92rem + 0.45vw, 1.32rem);
  letter-spacing: -0.012em;
  white-space: nowrap;
  color: var(--color-title);
}

.menu-toggle {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  border-radius: var(--radius-xs);
  background: var(--color-secondary-900);
  color: #fff;
  font-weight: 700;
  font-size: var(--text-2xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.72rem 1.05rem;
  min-height: 44px;
}

.menu-toggle::after {
  content: "";
  width: 0.9rem;
  height: 0.5rem;
  border-top: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
}

.site-nav {
  position: absolute;
  inset: calc(100% + 0.55rem) 0 auto auto;
  display: none;
  min-width: 15rem;
  padding: var(--space-3);
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.site-nav.is-open {
  display: grid;
  gap: 0.1rem;
}

.site-nav a {
  position: relative;
  padding: 0.72rem 0.9rem;
  border-radius: var(--radius-xs);
  color: var(--color-secondary-700);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
}

.site-nav a[aria-current="page"],
.site-nav a.is-current {
  color: var(--color-primary-700);
}

.btn.nav-cta {
  display: none;
}

/* ---- Buttons ---- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border-radius: var(--radius-pill);
  padding: 0.95rem 1.6rem;
  min-height: 48px;
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.005em;
  white-space: nowrap;
  transition:
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    background-color var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-3px);
}

.btn:active {
  transform: translateY(-1px);
}

.btn .btn-arrow {
  transition: transform var(--duration-base) var(--ease-out);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary-700) 0%, var(--color-primary-500) 100%);
  box-shadow: 0 18px 38px -14px rgba(23, 51, 117, 0.7);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: 0 26px 50px -16px rgba(23, 51, 117, 0.8);
}

.btn-secondary {
  color: var(--color-primary-700);
  background: var(--color-surface);
  box-shadow: inset 0 0 0 1.5px var(--color-line), var(--shadow-xs);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  color: var(--color-primary-800);
  box-shadow: inset 0 0 0 1.5px var(--color-primary-300), var(--shadow-sm);
}

.btn-ghost {
  color: var(--color-secondary-700);
  background: transparent;
  box-shadow: inset 0 0 0 1.5px var(--color-line);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: var(--color-primary-700);
  box-shadow: inset 0 0 0 1.5px var(--color-primary-300);
}

/* ---- Chips ---- */
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  box-shadow: inset 0 0 0 1px var(--color-line);
  color: var(--color-secondary-700);
  font-size: var(--text-xs);
  font-weight: 700;
}

.chip::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--color-accent-500);
}

.chip.is-plain::before {
  display: none;
}

/* ---- Stats ---- */
.stats-grid {
  display: grid;
  gap: var(--space-4);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-xs);
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 2rem + 3.4vw, 4.4rem);
  font-weight: 800;
  line-height: 0.95;
  color: var(--color-primary-700);
  letter-spacing: var(--tracking-display);
}

.stat-label {
  margin-top: var(--space-3);
  color: var(--color-text-soft);
  font-weight: 500;
  font-size: var(--text-sm);
}

/* ---- Section head ---- */
.section-head {
  display: grid;
  gap: var(--space-4);
  max-width: 56rem;
}

/* ---- Generic card ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-xs);
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card h3 {
  font-family: var(--font-display);
  font-size: var(--display-4);
  line-height: 1.05;
}

.card p {
  margin-top: var(--space-3);
  color: var(--color-text-soft);
}

/* ---- Footer ---- */
.footer {
  margin-top: var(--section-gap);
  padding: var(--space-10) 0 var(--space-8);
  border-top: 1px solid var(--color-line);
  color: var(--color-secondary-500);
  font-size: var(--text-xs);
}

.footer p {
  text-align: center;
}

/* ---- Responsive nav ---- */
@media (min-width: 60rem) {
  .menu-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: inline-flex;
    align-items: center;
    margin-left: auto;
    min-width: 0;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
    gap: 0.15rem;
  }

  .site-nav a {
    padding: 0.55rem 0.95rem;
    border-radius: 0;
    background: none;
  }

  .site-nav a::after {
    content: "";
    position: absolute;
    left: 0.95rem;
    right: 0.95rem;
    bottom: 0.18rem;
    height: 2px;
    background: var(--color-primary-700);
    transform: scaleX(0);
    transform-origin: 0 50%;
    transition: transform var(--duration-base) var(--ease-out);
  }

  .site-nav a:hover,
  .site-nav a:focus-visible {
    background: none;
    color: var(--color-primary-800);
  }

  .site-nav a:hover::after,
  .site-nav a:focus-visible::after,
  .site-nav a.is-current::after,
  .site-nav a[aria-current="page"]::after {
    transform: scaleX(1);
  }

  .btn.nav-cta {
    display: inline-flex;
    padding: 0.72rem 1.4rem;
    min-height: 44px;
  }

  .nav-only-mobile {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============================================================
   Site Footer (einheitlich auf allen Seiten)
   ============================================================ */
.site-footer {
  margin-top: var(--section-gap);
  border-top: 1px solid var(--color-line);
  padding: var(--space-12) 0 var(--space-8);
}

.footer-top {
  display: grid;
  gap: var(--space-8);
}

.footer-brand .brand {
  margin-right: 0;
}

.footer-brand .brand-text {
  font-size: 1.5rem;
}

.footer-brand p {
  margin-top: var(--space-3);
  max-width: 34ch;
  color: var(--color-text-soft);
  font-size: var(--text-sm);
}

.footer-cols {
  display: grid;
  gap: var(--space-6) var(--space-8);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: var(--text-2xs);
  font-weight: 800;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-mute);
}

.footer-col a {
  display: block;
  margin-top: var(--space-3);
  color: var(--color-secondary-700);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: color var(--duration-fast) var(--ease-standard);
}

.footer-col a:hover,
.footer-col a:focus-visible {
  color: var(--color-primary-700);
}

/* Visual upgrade: projects + social links */
.footer-projects a {
  position: relative;
  padding-left: 1rem;
}

.footer-projects a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 999px;
  background: linear-gradient(145deg, var(--color-primary-500), var(--color-primary-700));
  box-shadow: 0 0 0 5px rgba(55, 109, 188, 0.12);
}

.footer-col.footer-social {
  display: grid;
  gap: var(--space-2);
}

.footer-col.footer-social a.social-link {
  margin-top: 0;
  display: grid;
  grid-template-columns: 2.15rem minmax(0, 1fr);
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 0.64rem;
  border-radius: 0.8rem;
  border: 1px solid var(--color-line);
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  box-shadow: 0 10px 18px -20px rgba(25, 73, 138, 0.65);
  color: var(--color-secondary-700);
  transition:
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard);
}

.footer-col.footer-social a.social-link .social-icon {
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 0.64rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid rgba(15, 60, 120, 0.12);
}

.footer-col.footer-social a.social-link .social-icon svg {
  width: 1rem;
  height: 1rem;
}

.footer-col.footer-social a.social-link .social-copy {
  display: grid;
  gap: 0.06rem;
}

.footer-col.footer-social a.social-link .social-platform {
  font-size: var(--text-xs);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-title);
}

.footer-col.footer-social a.social-link .social-sub {
  font-size: var(--text-2xs);
  font-weight: 600;
  color: var(--color-text-mute);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col.footer-social a.social-link.is-linkedin {
  border-color: #d6e6ff;
  background: linear-gradient(180deg, #f7fbff 0%, #eef5ff 100%);
}

.footer-col.footer-social a.social-link.is-linkedin .social-icon {
  color: #0a66c2;
}

.footer-col.footer-social a.social-link.is-instagram {
  border-color: #f3d9eb;
  background: linear-gradient(180deg, #fff9fd 0%, #fff1f8 100%);
}

.footer-col.footer-social a.social-link.is-instagram .social-icon {
  color: #d62976;
}

.footer-col.footer-social a.social-link.is-facebook {
  border-color: #d8e2ff;
  background: linear-gradient(180deg, #f7f9ff 0%, #edf2ff 100%);
}

.footer-col.footer-social a.social-link.is-facebook .social-icon {
  color: #1877f2;
}

.footer-col.footer-social a.social-link:hover,
.footer-col.footer-social a.social-link:focus-visible {
  transform: translateY(-1px);
  border-color: var(--color-primary-300);
  box-shadow: 0 14px 24px -20px rgba(23, 70, 132, 0.65);
}

.footer-bottom {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-line);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  align-items: center;
  justify-content: space-between;
  color: var(--color-text-mute);
  font-size: var(--text-xs);
}

.footer-legal {
  display: flex;
  gap: var(--space-4);
}

.footer-legal a:hover,
.footer-legal a:focus-visible {
  color: var(--color-primary-700);
}

@media (min-width: 48rem) {
  .footer-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 64rem) {
  .footer-top {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  }

  .footer-cols {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}