/* ============================================================
   Sticky Site Header — sichtbar nach Hero-Ende, Burger-Mobile
   ============================================================ */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-text-strong);
  color: var(--color-white);
  padding: var(--space-xs) var(--space-md);
  z-index: 9999;
  font-family: 'Geist Mono', monospace;
  font-size: var(--fs-mono-sm);
}
.skip-link:focus {
  left: var(--space-md);
  top: var(--space-md);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  /* Durchgehender Stil: Verlauf + Blur + Mask. Nur Farbschema wechselt. */
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  -webkit-mask-image: linear-gradient(to bottom, black 0%, black 75%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 0%, black 75%, transparent 100%);
  border-bottom: 0;
  padding-bottom: 0.4rem;
  transition:
    background 0.5s ease,
    color 0.5s ease;
}

/* Dark-Theme (ueber dunklen Sections): dunkler Verlauf, helle Texte */
.site-header[data-state="dark"] {
  background: linear-gradient(
    to bottom,
    rgba(10, 14, 12, 0.72) 0%,
    rgba(10, 14, 12, 0.45) 40%,
    rgba(10, 14, 12, 0.18) 75%,
    transparent 100%
  );
  color: var(--color-bg-light);
}

/* Light-Theme (ueber hellen Sections): heller Verlauf, dunkle Texte */
.site-header[data-state="light"] {
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.85) 0%,
    rgba(255, 255, 255, 0.55) 40%,
    rgba(255, 255, 255, 0.20) 75%,
    transparent 100%
  );
  color: var(--color-text-strong);
}

/* Wenn Mobile-Menü offen ist: Header tritt zurück.
   Das Panel hat seinen eigenen Brand-Title und Close-Button — Logo
   und Burger im Header werden vom Mobile-Overlay (z=300) verdeckt.
   pointer-events:none auf den Header damit der Header keine Klicks
   abfaengt die fuer den Panel-Close-Button gedacht sind. */
.site-header.is-menu-open {
  background: transparent !important;
  -webkit-mask-image: none;
  mask-image: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  pointer-events: none;
}

.site-header__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 0.85rem var(--container-pad);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-header__logo {
  display: flex;
  align-items: center;
  position: relative;
}

.site-header__logo img {
  height: 36px;
  width: auto;
  transition: opacity 0.4s ease;
}

/* Beide Logos uebereinander, kreuzfaden je nach State */
.site-header__logo-light {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.site-header[data-state="dark"] .site-header__logo-dark { opacity: 0; }
.site-header[data-state="dark"] .site-header__logo-light { opacity: 1; }
.site-header[data-state="light"] .site-header__logo-dark { opacity: 1; }
.site-header[data-state="light"] .site-header__logo-light { opacity: 0; }

/* Wenn Menü offen: immer das helle Logo zeigen (Overlay ist dunkel) */
.site-header.is-menu-open .site-header__logo-dark { opacity: 0; }
.site-header.is-menu-open .site-header__logo-light { opacity: 1; }

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-left: auto;
  margin-right: var(--space-md);
  font-family: 'Geist', sans-serif;
  font-size: 0.9375rem;
  font-weight: 500;
}

.site-header__nav a {
  color: inherit;
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: color 0.2s ease;
}

.site-header__nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.site-header[data-state="light"] .site-header__nav a:hover { color: var(--color-green); }
.site-header[data-state="dark"] .site-header__nav a:hover { color: var(--color-bg-light); opacity: 1; }
.site-header[data-state="dark"] .site-header__nav a { opacity: 0.85; }
.site-header__nav a:hover::after { transform: scaleX(1); }

.site-header__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.7rem 1.2rem;
  font-family: 'Geist', sans-serif;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 2px;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.site-header[data-state="dark"] .site-header__cta {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-bg-light);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.site-header[data-state="dark"] .site-header__cta:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--color-bg-light);
  transform: translateY(-1px);
}

.site-header[data-state="light"] .site-header__cta {
  background: var(--color-green);
  color: var(--color-white);
  border: 1px solid var(--color-green);
}

.site-header[data-state="light"] .site-header__cta:hover {
  background: var(--color-green-deep);
  border-color: var(--color-green-deep);
  transform: translateY(-1px);
}

.site-header__cta span {
  transition: transform 0.3s ease;
}

.site-header__cta:hover span {
  transform: translateX(3px);
}

/* ============================================================
   Burger-Button (Mobile) — schmale Lines, X-Morph beim Open
   ============================================================ */

.site-header__burger {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  margin-left: auto;
  /* Echtes Tap-Target, padding = visuelle Linie kleiner als Box */
  padding: 0;
  z-index: 320; /* ueber dem Mobile-Overlay (z=300) damit Burger immer klickbar */
}

.site-header__burger-line {
  position: absolute;
  left: 50%;
  width: 24px;
  height: 1.75px;
  background: currentColor;
  transform-origin: center;
  transition: transform 0.45s cubic-bezier(0.65, 0, 0.35, 1),
              opacity 0.25s ease,
              top 0.45s cubic-bezier(0.65, 0, 0.35, 1),
              width 0.4s ease;
  border-radius: 2px;
  margin-left: -12px;
}

.site-header__burger-line--top { top: 14px; }
.site-header__burger-line--mid { top: 21.5px; width: 18px; margin-left: -9px; }
.site-header__burger-line--bot { top: 29px; width: 14px; margin-left: -7px; }

.site-header__burger:hover .site-header__burger-line--mid,
.site-header__burger:hover .site-header__burger-line--bot {
  width: 24px;
  margin-left: -12px;
}

/* Burger im offenen Zustand: ausblenden — der explizite Close-Button
   im Panel uebernimmt. Erspart visuelle Doppelung "X" rechts oben. */
.site-header__burger[aria-expanded="true"] {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.85);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

/* ============================================================
   Mobile Menu — Fullscreen-Overlay mit Stagger-Animation
   ============================================================ */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 300; /* unter dem Burger (z=320), ueber allem anderen */
  pointer-events: none;
  display: none; /* nur < 880px sichtbar (siehe MQ unten) */
}

.mobile-menu[data-state="opening"],
.mobile-menu[data-state="open"],
.mobile-menu[data-state="closing"] {
  pointer-events: auto;
}

/* Backdrop: Brand-Tiefe, expandiert per clip-path Circle */
.mobile-menu__backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at top right, rgba(2, 72, 2, 0.5) 0%, transparent 50%),
    radial-gradient(ellipse at bottom left, rgba(28, 138, 62, 0.18) 0%, transparent 60%),
    var(--color-text-strong);
  /* clip-path Animation: Origin = Burger-Position rechts oben */
  clip-path: circle(0% at calc(100% - 32px) 32px);
  transition: clip-path 0.7s cubic-bezier(0.65, 0, 0.35, 1);
  will-change: clip-path;
}

.mobile-menu[data-state="open"] .mobile-menu__backdrop,
.mobile-menu[data-state="opening"] .mobile-menu__backdrop {
  clip-path: circle(150% at calc(100% - 32px) 32px);
}

/* Subtile Korn-Struktur ueber Backdrop fuer Hochwertigkeit */
.mobile-menu__backdrop::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.6'/></svg>");
  opacity: 0.04;
  mix-blend-mode: overlay;
  pointer-events: none;
}

/* Akzent-Strich oben in Brand-Gruen — laeuft beim Open ein */
.mobile-menu__backdrop::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--color-green-glow) 40%, var(--color-green) 70%, transparent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.2s;
}

.mobile-menu[data-state="open"] .mobile-menu__backdrop::after,
.mobile-menu[data-state="opening"] .mobile-menu__backdrop::after {
  transform: scaleX(1);
}

/* Panel: zentrierter Inhalt */
.mobile-menu__panel {
  position: relative;
  height: 100%;
  width: 100%;
  display: flex;
  flex-direction: column;
  padding: 84px var(--container-pad) 2rem;
  overflow-y: auto;
  /* Lenis darf hier nicht greifen */
  overscroll-behavior: contain;
  color: var(--color-bg-light);
}

/* Schließen-Button: oben rechts, Mono-Label + X-Icon */
.mobile-menu__close {
  position: absolute;
  top: 1.05rem;
  right: var(--container-pad);
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 0;
  font-family: 'Geist Mono', monospace;
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(243, 245, 248, 0.8);
  background: transparent;
  border: 0;
  cursor: pointer;
  z-index: 2;
  /* Initial: leicht versetzt, Fade-In passend zum Header */
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.5s ease 0.15s, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1) 0.15s, color 0.25s ease;
}

.mobile-menu[data-state="open"] .mobile-menu__close,
.mobile-menu[data-state="opening"] .mobile-menu__close {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__close:hover,
.mobile-menu__close:focus-visible {
  color: var(--color-bg-light);
  outline: none;
}

.mobile-menu__close-icon {
  position: relative;
  width: 18px;
  height: 18px;
  display: inline-block;
}

.mobile-menu__close-icon span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 1.75px;
  background: currentColor;
  border-radius: 2px;
  transform-origin: center;
  transition: background 0.25s ease;
}

.mobile-menu__close-icon span:first-child {
  transform: translate(-50%, -50%) rotate(45deg);
}

.mobile-menu__close-icon span:last-child {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.mobile-menu__close:hover .mobile-menu__close-icon span,
.mobile-menu__close:focus-visible .mobile-menu__close-icon span {
  background: var(--color-green-glow);
}

/* Auf sehr schmalen Viewports: Label weg, nur X */
@media (max-width: 380px) {
  .mobile-menu__close-label {
    display: none;
  }
}

/* Header im Panel — Eyebrow + Brand */
.mobile-menu__header {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: clamp(2rem, 6vh, 3.5rem);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease 0.1s, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.1s;
}

.mobile-menu[data-state="open"] .mobile-menu__header,
.mobile-menu[data-state="opening"] .mobile-menu__header {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__eyebrow {
  font-family: 'Geist Mono', monospace;
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(243, 245, 248, 0.55);
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}

.mobile-menu__eyebrow-line {
  width: 28px;
  height: 1px;
  background: var(--color-green-glow);
  display: inline-block;
}

.mobile-menu__title {
  font-family: 'Geist', sans-serif;
  font-weight: 500;
  font-size: clamp(1.4rem, 1rem + 1.5vw, 1.85rem);
  letter-spacing: -0.02em;
  color: var(--color-bg-light);
  margin: 0;
}

/* Nav-Links: Stagger via --mm-i */
.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(243, 245, 248, 0.08);
  font-family: 'Geist', sans-serif;
  color: var(--color-bg-light);
  position: relative;
  /* Initial: leicht versetzt + transparent */
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1) calc(0.18s + var(--mm-i, 0) * 0.06s),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1) calc(0.18s + var(--mm-i, 0) * 0.06s),
    color 0.25s ease,
    padding 0.3s ease;
}

.mobile-menu[data-state="open"] .mobile-menu__link,
.mobile-menu[data-state="opening"] .mobile-menu__link {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__link:active,
.mobile-menu__link:focus-visible {
  color: var(--color-green-glow);
  outline: none;
}

.mobile-menu__link:hover {
  padding-left: 0.4rem;
  color: var(--color-green-glow);
}

.mobile-menu__link-num {
  font-family: 'Geist Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: rgba(243, 245, 248, 0.4);
  width: 1.6rem;
  flex-shrink: 0;
  transition: color 0.25s ease;
}

.mobile-menu__link:hover .mobile-menu__link-num,
.mobile-menu__link:focus-visible .mobile-menu__link-num {
  color: var(--color-green-glow);
}

.mobile-menu__link-label {
  flex: 1;
  font-size: clamp(1.5rem, 1rem + 2.5vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.mobile-menu__link-arrow {
  font-size: 1.25rem;
  color: rgba(243, 245, 248, 0.35);
  transform: translateX(0);
  transition: transform 0.3s ease, color 0.25s ease;
}

.mobile-menu__link:hover .mobile-menu__link-arrow,
.mobile-menu__link:focus-visible .mobile-menu__link-arrow {
  transform: translateX(6px);
  color: var(--color-green-glow);
}

/* CTA: gleicher Stagger, aber mit anderer Optik */
.mobile-menu__cta-wrap {
  margin-top: clamp(2rem, 5vh, 3rem);
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1) calc(0.18s + var(--mm-i, 5) * 0.06s),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1) calc(0.18s + var(--mm-i, 5) * 0.06s);
}

.mobile-menu[data-state="open"] .mobile-menu__cta-wrap,
.mobile-menu[data-state="opening"] .mobile-menu__cta-wrap {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1.1rem 1.6rem;
  background: var(--color-green);
  color: var(--color-white);
  font-family: 'Geist', sans-serif;
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.005em;
  border-radius: 2px;
  width: 100%;
  justify-content: center;
  box-shadow: 0 18px 40px -22px rgba(2, 72, 2, 0.65);
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.mobile-menu__cta:active {
  transform: translateY(1px);
  background: var(--color-green-deep);
}

.mobile-menu__cta-arrow {
  transition: transform 0.3s ease;
}

.mobile-menu__cta:active .mobile-menu__cta-arrow,
.mobile-menu__cta:focus-visible .mobile-menu__cta-arrow {
  transform: translateX(4px);
}

/* Footer-Info: Adresse + Slogan */
.mobile-menu__foot {
  margin-top: auto;
  padding-top: clamp(2rem, 5vh, 3rem);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1) calc(0.18s + var(--mm-i, 6) * 0.06s),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1) calc(0.18s + var(--mm-i, 6) * 0.06s);
}

.mobile-menu[data-state="open"] .mobile-menu__foot,
.mobile-menu[data-state="opening"] .mobile-menu__foot {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__foot-line {
  font-family: 'Geist', sans-serif;
  font-size: 0.8125rem;
  color: rgba(243, 245, 248, 0.55);
  margin: 0;
  line-height: 1.5;
}

.mobile-menu__foot-line--mono {
  font-family: 'Geist Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: rgba(243, 245, 248, 0.4);
}

/* Reduced Motion: Animationen aus, Inhalt direkt sichtbar */
@media (prefers-reduced-motion: reduce) {
  .mobile-menu__backdrop {
    transition: opacity 0.2s ease;
    clip-path: none !important;
    opacity: 0;
  }
  .mobile-menu[data-state="opening"] .mobile-menu__backdrop,
  .mobile-menu[data-state="open"] .mobile-menu__backdrop {
    opacity: 1;
  }
  .mobile-menu__header,
  .mobile-menu__link,
  .mobile-menu__cta-wrap,
  .mobile-menu__foot {
    transition: opacity 0.15s ease !important;
    transform: none !important;
  }
  .site-header__burger-line {
    transition: opacity 0.2s ease, top 0.2s ease, transform 0.2s ease !important;
  }
}

/* ============================================================
   Breakpoints: Burger zeigt sich, Desktop-Nav versteckt
   ============================================================ */

@media (max-width: 880px) {
  .site-header__nav,
  .site-header__cta {
    display: none;
  }
  .site-header__burger {
    display: block;
  }
  .site-header__inner {
    justify-content: space-between;
  }
  .site-header__logo {
    margin-right: auto;
  }
  .mobile-menu {
    display: block;
  }
}