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

:root {
  --bg: #f8f9fa;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --border: #d2d2d7;
  --accent: #73a942;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max: 760px;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ANIMATED BACKGROUND */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.bg-blob {
  position: absolute;
  border-radius: 50%;
  will-change: transform;
}

.bg-blob--1 {
  width: 75vw;
  height: 75vw;
  background: radial-gradient(circle at center, rgba(115,169,66,0.10), transparent 70%);
  filter: blur(70px);
  top: -20%;
  left: -15%;
  animation: drift1 50s ease-in-out infinite;
}

.bg-blob--2 {
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle at center, rgba(168,209,122,0.08), transparent 70%);
  filter: blur(90px);
  bottom: -15%;
  right: -10%;
  animation: drift2 60s ease-in-out infinite;
}

.bg-blob--3 {
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle at center, rgba(74,122,34,0.07), transparent 70%);
  filter: blur(80px);
  top: 35%;
  left: 45%;
  animation: drift3 42s ease-in-out infinite;
}

/* Grain-Overlay */
.bg-layer::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
  pointer-events: none;
}

@keyframes drift1 {
  0%, 100% { transform: translate(0, 0); }
  25%       { transform: translate(4%, 7%); }
  50%       { transform: translate(8%, 3%); }
  75%       { transform: translate(2%, 9%); }
}

@keyframes drift2 {
  0%, 100% { transform: translate(0, 0); }
  30%       { transform: translate(-5%, -4%); }
  60%       { transform: translate(-9%, 4%); }
  80%       { transform: translate(-3%, -7%); }
}

@keyframes drift3 {
  0%, 100% { transform: translate(0, 0); }
  40%       { transform: translate(-7%, 6%); }
  70%       { transform: translate(5%, -5%); }
}

@media (prefers-reduced-motion: reduce) {
  .bg-blob { animation: none; }
}

/* NAV */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 3rem;
  height: 64px;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

nav.scrolled {
  background: rgba(248, 249, 250, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-name {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  transition: opacity 0.2s;
}

.nav-name:hover {
  opacity: 0.5;
}

.nav-links {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--text);
}

.nav-link.active {
  color: var(--accent);
  font-weight: 500;
}

/* SHARED SECTION BASE */
.leistungen,
.vorteile,
.projekte,
.cta {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.divider {
  max-width: 1100px;
  margin: 0 auto;
  height: 1px;
  background: var(--border);
}

/* VORTEILE */
.vorteile-header {
  margin-bottom: 2.5rem;
}

.vorteile-sub {
  font-size: 1rem;
  font-weight: 300;
  color: var(--muted);
  max-width: 560px;
  margin-top: 0.5rem;
  line-height: 1.7;
}

.vorteile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.vorteil {
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.vorteil:hover {
  border-color: rgba(115,169,66,0.35);
  box-shadow: 0 2px 16px rgba(115,169,66,0.08);
}

.vorteil-icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.vorteil h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.vorteil p {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.65;
}

/* LEISTUNGEN */
.leistungen-header {
  margin-bottom: 2.5rem;
}

.leistungen-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

/* PROJEKTE */
.projekte-header {
  margin-bottom: 2rem;
}

.projekte-note {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--muted);
  margin-top: 0.25rem;
}

.projekte-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}

/* CTA */
.cta-content {
  text-align: center;
}

.cta-content h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.cta-text {
  font-size: 1rem;
  font-weight: 300;
  color: var(--muted);
  margin-bottom: 1.75rem;
}

.label {
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 2rem;
}

/* HERO */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 9rem 2rem 5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-visual {
  width: 100%;
}

.abstract-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 24px;
  background: linear-gradient(145deg, #edf5e4 0%, #f4f7f0 50%, #f0f2ec 100%);
  overflow: hidden;
  border: 1px solid var(--border);
}

.av-orb {
  position: absolute;
  width: 130%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 42%, rgba(115,169,66,0.22) 0%, transparent 55%);
  top: -40%;
  left: -15%;
}

.av-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,0,0,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.06) 1px, transparent 1px);
  background-size: 36px 36px;
}

.av-ring {
  position: absolute;
  width: 55%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(115,169,66,0.2);
  bottom: -15%;
  right: -10%;
}

.av-accent-line {
  position: absolute;
  background: rgba(115,169,66,0.35);
  border-radius: 2px;
}

.av-line-1 {
  width: 38%;
  height: 2px;
  bottom: 32%;
  left: 12%;
}

.av-line-2 {
  width: 20%;
  height: 2px;
  bottom: 26%;
  left: 12%;
  opacity: 0.5;
}

.av-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
  bottom: 32%;
  left: calc(12% - 16px);
  transform: translateY(50%);
}

.eyebrow {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 1rem;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.btn {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 400;
  color: #ffffff;
  background: var(--accent);
  padding: 0.65rem 1.4rem;
  border-radius: 980px;
  text-decoration: none;
  transition: background 0.2s;
}

.btn:hover {
  background: #245501;
}

/* CARDS */
.card {
  padding: 1.75rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: rgba(115,169,66,0.35);
  box-shadow: 0 2px 16px rgba(115,169,66,0.08);
}

.card-num {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.65;
}

.card-desc {
  margin-bottom: 1rem;
}

.card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.card-list li {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--muted);
  padding-left: 1rem;
  position: relative;
}

.card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

/* PROJECTS */

.project {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: center;
  background: transparent;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: background 0.15s;
}

.project:hover {
  background: rgba(115,169,66,0.03);
}

.project-img {
  width: 100%;
  aspect-ratio: 16/9;
  background: #eaeaf0;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-img span {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--muted);
  text-align: center;
  padding: 0 12px;
  letter-spacing: 0.03em;
}

.project-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.project-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.project-type {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
}

.project-title {
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--text);
}

.project-desc {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.6;
}


/* FOOTER */
footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem 2rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}

footer a {
  color: var(--muted);
  text-decoration: none;
}

footer a:hover {
  color: var(--text);
}

/* REVEAL ANIMATIONS */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hamburger-Button: auf Desktop versteckt */
.nav-toggle {
  display: none;
}

/* RESPONSIVE */
@media (max-width: 680px) {
  body {
    font-size: 16px;
  }

  /* NAV: Hamburger-Menü */
  nav {
    padding: 0 1.25rem;
    grid-template-columns: 1fr auto;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 6px 4px;
    background: none;
    border: none;
    cursor: pointer;
    align-items: center;
    justify-content: center;
  }

  .nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }

  nav.open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  nav.open .nav-toggle span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }
  nav.open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    transform: none;
    flex-direction: column;
    gap: 0;
    background: rgba(248, 249, 250, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1.5rem 1rem;
    z-index: 99;
  }

  nav.open .nav-links {
    display: flex;
  }

  .nav-link {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 1rem;
    color: var(--text);
  }

  .nav-links .nav-link:last-child {
    border-bottom: none;
  }

  /* HERO */
  .hero {
    grid-template-columns: 1fr;
    padding: 5.5rem 1.25rem 3rem;
  }

  .hero-visual {
    display: none;
  }

  /* SECTIONS */
  .leistungen,
  .vorteile,
  .projekte,
  .cta {
    padding: 3rem 1.25rem;
  }

  .vorteile-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .leistungen-cards {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .project {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1.75rem 0;
  }

  .divider {
    margin-left: 1.25rem;
    margin-right: 1.25rem;
  }

  footer {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}