/* ==========================================================================
       CSS Reset & Design-Variablen (Forest & Moss Green Palette)
       ========================================================================== */
:root {
  --forest-green: #2d6a4f;
  /* Primary Accent */
  --moss-green: #4a5d4e;
  /* Secondary / Muted Text & Borders */
  --deep-green: #063b00;
  /* Dark Text & Contrast Backgrounds */
  --leaf-green: #266210;
  /* Buttons & Interactive Elements */
  --lime-green: #90b800;
  /* Highlights & Badges */
  --yellow-accent: #e1e100;
  /* High Contrast Focus States */
  --bg-light: #f4f7f4;
  /* Soft Light Background */
  --white: #ffffff;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  color: var(--deep-green);
  background-color: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ==========================================================================
       Barrierefreiheit (WCAG 2.1 AA Focus & Accessibility Stile)
       ========================================================================== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--yellow-accent) !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 0 5px var(--deep-green) !important;
}

.skip-link {
  position: absolute;
  top: -60px;
  left: 1rem;
  background: var(--yellow-accent);
  color: var(--deep-green);
  padding: 0.75rem 1.25rem;
  font-weight: 800;
  z-index: 1001;
  border-radius: 6px;
  text-decoration: none;
  transition: top 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.skip-link:focus {
  top: 1rem;
}

.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;
}

/* ==========================================================================
       Header & Navigation (Mobile First)
       ========================================================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-b: 2px solid rgba(45, 106, 79, 0.15);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  height: 70px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--deep-green);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--forest-green);
}

.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 24px;
  z-index: 1002;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--deep-green);
  border-radius: 3px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(10.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-10.5px) rotate(-45deg);
}

nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  transition: right 0.4s ease-in-out;
  box-shadow: -5px 0 25px rgba(6, 59, 0, 0.15);
  z-index: 1001;
}

nav.active {
  right: 0;
}

nav a {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--deep-green);
  text-decoration: none;
  transition: var(--transition);
  padding: 0.5rem 1rem;
}

nav a:hover,
nav a:focus {
  color: var(--forest-green);
}

/* ==========================================================================
       Hero Section
       ========================================================================== */
.hero {
  margin-top: 70px;
  min-height: calc(100vh - 70px);
  display: flex;
  flex-direction: column;
}

.hero-split-container {
  display: flex;
  flex-direction: column;
  width: 100%;
  flex: 1;
}

.hero-half-left {
  position: relative;
  width: 100%;
  min-height: 320px;
  background-color: var(--forest-green);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-svg-illustration {
  width: 100%;
  max-width: 480px;
  height: auto;
  padding: 2rem;
}

.hero-image-caption {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  background: var(--deep-green);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--lime-green);
}

.hero-half-right {
  width: 100%;
  background: var(--white);
  padding: 3rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-light);
  color: var(--leaf-green);
  padding: 0.4rem 1rem;
  font-size: 0.875rem;
  font-weight: 800;
  border-radius: 50px;
  width: fit-content;
  border: 1.5px solid var(--lime-green);
}

h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--deep-green);
  line-height: 1.25;
}

h1 span {
  color: var(--forest-green);
  text-decoration: underline;
  text-decoration-color: var(--lime-green);
}

.hero-text {
  color: var(--moss-green);
  font-size: 1.1rem;
}

/* ==========================================================================
       Buttons & Call to Actions
       ========================================================================== */
.btn-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 1.75rem;
  font-size: 1.05rem;
  font-weight: 800;
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
  min-height: 48px;
}

.btn-primary {
  background-color: var(--leaf-green);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(38, 98, 16, 0.35);
}

.btn-primary:hover {
  background-color: var(--deep-green);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--leaf-green);
  border: 2px solid var(--leaf-green);
}

.btn-secondary:hover {
  background-color: var(--leaf-green);
  color: var(--white);
}

/* ==========================================================================
       Sections & Card Layouts
       ========================================================================== */
section {
  padding: 4.5rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--deep-green);
  margin-bottom: 0.75rem;
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--moss-green);
  margin-bottom: 3rem;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.05rem;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.card {
  background: var(--white);
  padding: 2.25rem;
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(6, 59, 0, 0.05);
  border: 1px solid rgba(74, 93, 78, 0.2);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(6, 59, 0, 0.12);
}

.card h3 {
  font-size: 1.3rem;
  color: var(--forest-green);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card p {
  color: var(--deep-green);
}

/* ==========================================================================
       Purchasing Process / Steps
       ========================================================================== */
.steps-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.step-item {
  display: flex;
  gap: 1.5rem;
  background: var(--white);
  padding: 1.5rem;
  border-radius: 14px;
  border: 1px solid rgba(74, 93, 78, 0.2);
  align-items: flex-start;
}

.step-number {
  background: var(--leaf-green);
  color: var(--white);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.step-item h3 {
  color: var(--deep-green);
  margin-bottom: 0.25rem;
}

.step-item p {
  color: var(--moss-green);
}

/* ==========================================================================
       Contact & Offer Form (Strict Accessibility & Contrast)
       ========================================================================== */
.contact-form-wrapper {
  background: var(--white);
  padding: 2.5rem 1.5rem;
  border-radius: 20px;
  box-shadow: 0 12px 32px rgba(6, 59, 0, 0.08);
  border: 2px solid var(--deep-green);
  max-width: 720px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.75rem;
}

.form-group label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--deep-green);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.95rem;
  border: 2px solid var(--deep-green) !important;
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  background-color: var(--white);
  color: var(--deep-green);
  min-height: 48px;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.95rem;
}

.checkbox-group input[type="checkbox"] {
  width: 28px;
  height: 28px;
  min-width: 28px;
  min-height: 28px;
  margin-top: 2px;
  accent-color: var(--leaf-green);
  cursor: pointer;
}

.checkbox-group label {
  font-weight: 500;
  color: var(--deep-green);
  cursor: pointer;
}

/* ==========================================================================
       Scroll to Top Button
       ========================================================================== */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--leaf-green);
  color: var(--white);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  background-color: var(--deep-green);
  transform: translateY(-3px);
}

/* ==========================================================================
       Footer Layout
       ========================================================================== */
.site-footer {
  background-color: var(--deep-green);
  color: var(--white);
  padding: 3rem 1.5rem;
  border-top: 4px solid var(--lime-green);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
  text-align: center;
}

.footer-text {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
}

.footer-text a {
  color: var(--lime-green);
  text-decoration: underline;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 0;
}

.footer-icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--white);
  transition: var(--transition);
  text-decoration: none;
}

.footer-icon-link:hover,
.footer-icon-link:focus-visible {
  background-color: var(--lime-green);
  color: var(--deep-green);
  border-color: var(--lime-green);
  transform: translateY(-3px);
}

/* ==========================================================================
       Desktop Responsive Enhancements (min-width: 992px)
       ========================================================================== */
@media (min-width: 992px) {
  .hero-split-container {
    flex-direction: row;
  }

  .hero-half-left,
  .hero-half-right {
    width: 50%;
    min-height: calc(100vh - 70px);
  }

  .hero-half-right {
    padding: 4rem 3.5rem;
  }

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

  .btn-group {
    flex-direction: row;
  }

  header {
    padding: 1rem 3rem;
  }

  .contact-form-wrapper {
    padding: 3rem;
  }
}