:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e5e7eb;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-primary: #031a85;       /* Indigo Akzent (Brand) */
  --color-primary-soft: #eef2ff;  /* Heller Indigo-Hintergrund */
}

.nav-toggle { color: #fff; background: transparent; border: none; }
.btn-primary { box-shadow: 0 8px 22px rgba(79, 70, 229, 0.25); }
.btn-secondary { color: #fff; }
.btn-secondary:hover { background-color: var(--color-primary); }
.header .logo { letter-spacing: -0.01em; }


/* --- Wollnitzke Header & Navigation (Optimiert) --- */

/* Grundzustand: Header ist über dem Hero-Bild (Absolute) */
.header--wollnitzke.is-home {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  border-bottom: none;
}

/* Sticky-Zustand: Wenn gescrollt wurde */
.header--wollnitzke.header--scrolled {
  position: fixed;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid var(--color-border);
}

/* Header-Höhen konsistent mit Basis-Theme */
.header--wollnitzke .container {
  height: 90px;
  display: flex;
  align-items: center;
  transition: height 0.3s ease;
}

.header--wollnitzke.header--scrolled .container {
  height: 75px; /* Etwas kompakter beim Scrollen */
}

/* Logo-Größen */
.hero-welding__logo img {
  display: block;
  max-height: 72px;
  width: auto;
  transition: max-height 0.3s ease;
}

.header--scrolled .hero-welding__logo img {
  max-height: 60px;
}

/* Logo-Switch: Hell auf Hero, Dunkel auf Sticky */
.hero-welding__logo .logo-dark { display: none; }
.hero-welding__logo .logo-light { display: block; }

.header--scrolled .logo-light { display: none; }
.header--scrolled .logo-dark { display: block; }

/* Textfarben-Wechsel */
.header--wollnitzke .hero-welding__menu a,
.header--wollnitzke .hero-welding__lang-link,
.header--wollnitzke .nav-toggle {
  color: #fff;
  transition: color 0.3s ease;
}

.header--scrolled .hero-welding__menu a,
.header--scrolled .hero-welding__lang-link,
.header--scrolled .nav-toggle {
  color: var(--color-text);
}

/* Legal Pages: Header ist nicht absolut (da kein Hero) */
.header--wollnitzke.is-legal {
  position: sticky;
  top: 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}

.header--wollnitzke.is-legal .hero-welding__menu a,
.header--wollnitzke.is-legal .hero-welding__lang-link,
.header--wollnitzke.is-legal .nav-toggle {
  color: var(--color-text);
}

.header--wollnitzke.is-legal .logo-light { display: none; }
.header--wollnitzke.is-legal .logo-dark { display: block; }


/* --- Hero Sektion (Wollnitzke Spezifisch) --- */

.hero-welding {
  position: relative;
  min-height: clamp(520px, 85vh, 900px);
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}

@supports (height: 100dvh) {
  .hero-welding { min-height: clamp(520px, 85dvh, 900px); }
}

.hero-welding__inner {
  width: 100%;
  padding-top: 100px; /* Platz für den absoluten Header */
  padding-bottom: 4rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

/* --- Mobile Anpassungen (Hero & Content) --- */

@media (max-width: 900px) {
  .hero-welding__bg { background-position: center 35%; }
}

@media (max-width: 640px) {
  .hero-welding { 
    min-height: 500px; 
    overflow: visible; 
  }
  .hero-welding__bg { background-position: center 30%; }
  
  .hero-welding__inner { 
    padding-top: 85px; 
    padding-bottom: 3.5rem; 
    gap: 2rem;
  }
  
  .hero-welding__title { font-size: 1.85rem; }
  .hero-welding__features { row-gap: 1.25rem; }
}

/* Footer */
.footer-logo img { max-height: 100px; }

/* Wollnitzke: Desktop-Hero-Menü auf Mobil ausblenden */
.hero-welding__menu { display: none; }
@media (min-width: 900px) {
  .hero-welding__menu { display: flex; }
}

/* Mobile: Remove margin-left from hero actions to prevent overflow */
@media (max-width: 899px) {
  .hero-welding__actions { margin-left: 0; }
  .hero-welding__feature { padding-inline: 0.5rem; }
}

/* Mobile: Stack features grid earlier */
@media (max-width: 640px) {
  .hero-welding__features { grid-template-columns: 1fr; }
}

/* --- Mobile NAV Optimierung für Wollnitzke --- */
/* Ziel: Logo links, rechts daneben Menütoggle und Sprachumschalter ganz nach rechts */
@media (max-width: 899px) {
  .hero-welding__nav {
    display: flex;
    flex-direction: row !important;
    align-items: center !important;
    width: 100%;
  }

  .nav-toggle {
    display: flex !important; /* Stellt sicher, dass der Toggle im gesamten mobilen Bereich sichtbar ist */
    margin-left: auto;
    align-items: center;
  }

  .hero-welding__actions {
    display: flex;
    align-items: center;
    margin-left: 0.5rem;
    margin-right: -0.5rem; /* Rückt die Sprachauswahl bündig an den rechten Rand */
  }
}

/* Spezifische Verkleinerungen für kleine Handys */
@media (max-width: 640px) {
  .header--wollnitzke .container {
    height: 70px;
    padding-inline: 1rem;
  }
  .hero-welding__logo img {
    max-height: 52px;
  }
}

/* --- Premium Animations, UX & Hover --- */
.hero-welding__content [data-animate] {
    transform: translateY(30px);
    transition-duration: 0.8s;
}

/* Button Pulse Effekt */
@keyframes btn-pulse {
    0% { box-shadow: 0 0 0 0 rgba(3, 26, 133, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(3, 26, 133, 0); }
    100% { box-shadow: 0 0 0 0 rgba(3, 26, 133, 0); }
}

.hero-welding__buttons .btn-primary {
    animation: btn-pulse 2s infinite;
}

.hero-welding__buttons .btn-primary:hover {
    animation: none;
    transform: translateY(-2px);
}

/* Karten & Interaktionen */
.usp-card {
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.usp-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 4px; height: 0;
    background: var(--color-primary);
    transition: height 0.3s ease;
}

.usp-card:hover {
    background: #fff;
    border-color: var(--color-primary);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.usp-card:hover::before {
    height: 100%;
}

.portfolio-item {
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    border-radius: var(--radius-lg);
    padding: 1rem;
    margin: -1rem;
}

.portfolio-item:hover {
    background: var(--color-bg-alt);
}

.portfolio-item__image img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s ease;
}

.portfolio-item:hover .portfolio-item__image img {
    transform: scale(1.03) translateY(-5px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.12);
}

/* Anwendungsbeispiele Cards */
.application-card {
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.application-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.application-card__image {
    overflow: hidden;
}

.application-card__image img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.application-card:hover .application-card__image img {
    transform: scale(1.1);
}

/* Formular UX */
.contact-form .form-row input:focus,
.contact-form .form-row textarea:focus {
    transform: translateY(-2px);
    transition: all 0.3s ease;
}

/* --- Scroll-Reveal Animationen (Wollnitzke Spezifisch) --- */
[data-animate] {
    opacity: 0;
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, opacity;
}

/* Standard: Slide Up */
[data-animate],
[data-animate="slide-up"] {
    transform: translateY(40px);
}

/* Slide von links */
[data-animate="slide-left"] {
    transform: translateX(-30px);
}

/* Slide von rechts */
[data-animate="slide-right"] {
    transform: translateX(30px);
}

/* Zoom In */
[data-animate="zoom-in"] {
    transform: scale(0.92);
}

/* In-View Zustand für alle */
[data-animate].in-view {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}

/* Bild-Reveal Effekt */
.portfolio-item__image, .application-card__image, .cta-image {
    overflow: hidden;
    border-radius: var(--radius-md);
}

[data-animate] img {
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate].in-view img {
    transform: scale(1);
}

[data-animate="zoom-in"] img {
    transform: scale(1.15);
}

/* Parallax für Hero-Hintergrund */
.hero-welding__bg {
    will-change: transform;
    transition: transform 0.1s linear; /* Sanfte Bewegung */
}