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

html, body {
  height: 100%;
  background: #0a0a0a;
  color: #fff;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Lenis braucht das */
html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

.lenis.lenis-scrolling iframe {
  pointer-events: none;
}

/* ===== SCROLL PROGRESS ===== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #fff, #888);
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 999;
  will-change: transform;
}

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 40px;
  z-index: 900;
  background: linear-gradient(180deg, rgba(10, 10, 10, 0.7) 0%, transparent 100%);
  backdrop-filter: blur(4px);
}

.nav-brand {
  font-weight: 900;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}

.nav-cta {
  font-size: 0.95rem;
  padding: 10px 22px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 100px;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-cta:hover {
  background: #fff;
  color: #0a0a0a;
  border-color: #fff;
}

/* ===== SECTION LABEL ===== */
.section-label {
  display: block;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.45;
  margin-bottom: 1.2rem;
}

/* ===== HERO ===== */
.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  background: radial-gradient(circle at 50% 50%, #1a1a1a 0%, #0a0a0a 70%);
  perspective: 1000px;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translate(-50%, -50%);
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 45%, rgba(10, 10, 10, 0.35) 0%, rgba(10, 10, 10, 0.75) 70%),
    linear-gradient(180deg, rgba(10, 10, 10, 0.55) 0%, rgba(10, 10, 10, 0.4) 50%, rgba(10, 10, 10, 0.85) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  will-change: transform;
}

.hero-title {
  font-size: clamp(3.5rem, 12vw, 9rem);
  font-weight: 900;
  line-height: 0.9;
  text-align: center;
  letter-spacing: -0.04em;
}

.hero-subtitle {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  opacity: 0.5;
  letter-spacing: 0.05em;
  text-align: center;
  opacity: 0;
}

.scroll-hint {
  position: absolute;
  bottom: 40px;
  z-index: 2;
  font-size: 0.9rem;
  opacity: 0.4;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ===== ALLGEMEINE SECTIONS ===== */
.section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 80px 40px;
  position: relative;
}

/* ===== INTRO TEXT REVEAL ===== */
.reveal-section {
  background: #111;
  perspective: 800px;
}

.big-text {
  font-size: clamp(2.6rem, 9vw, 7rem);
  font-weight: 800;
  line-height: 1.05;
  text-align: center;
  letter-spacing: -0.03em;
}

/* ===== SERVICES / CARDS ===== */
.cards-section {
  gap: 30px;
  background: #0d0d0d;
  perspective: 1200px;
}

.card {
  width: min(560px, 90vw);
  padding: 40px 50px;
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 20px;
  text-align: left;
  transform-style: preserve-3d;
  will-change: transform;
  transition: box-shadow 0.4s ease, border-color 0.4s ease;
}

.card:hover {
  border-color: #555;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6), 0 0 40px rgba(255, 255, 255, 0.06);
}

.card-index {
  display: block;
  font-size: 0.9rem;
  opacity: 0.4;
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
}

.card-title {
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.card-desc {
  font-size: 1.05rem;
  line-height: 1.5;
  opacity: 0.65;
}

/* ===== PROZESS / STICKY ===== */
.sticky-section {
  height: 200vh;
  background: #111;
  align-items: flex-start;
  padding-top: 30vh;
}

.sticky-box {
  position: sticky;
  top: 30vh;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  will-change: transform, filter;
}

.sticky-box h2 {
  font-size: clamp(2.2rem, 5.5vw, 4.5rem);
  margin-bottom: 1rem;
  line-height: 1.1;
}

.sticky-box p {
  font-size: 1.25rem;
  opacity: 0.6;
  line-height: 1.5;
}

/* ===== USP / HORIZONTAL SCROLL ===== */
.horizontal-section {
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  background: #0a0a0a;
}

.horizontal-track {
  display: flex;
  gap: 80px;
  padding: 0 10vw;
  will-change: transform;
}

.horizontal-item {
  flex-shrink: 0;
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 900;
  white-space: nowrap;
  letter-spacing: -0.03em;
  will-change: transform, opacity, filter;
}

/* ===== KONTAKT / FINALE ===== */
.finale {
  background: #111;
  perspective: 800px;
  justify-content: space-between;
}

.finale-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: auto 0;
}

.finale-text {
  font-size: clamp(2.6rem, 8vw, 6rem);
  font-weight: 900;
  text-align: center;
  line-height: 1.05;
  margin-bottom: 2.2rem;
}

.cta-button {
  display: inline-block;
  font-size: 1.2rem;
  font-weight: 600;
  padding: 18px 40px;
  border: 1px solid #fff;
  border-radius: 100px;
  transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

.cta-button:hover {
  background: #fff;
  color: #0a0a0a;
  transform: translateY(-3px);
}

.social-row {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
}

.social-link {
  font-size: 0.95rem;
  opacity: 0.5;
  letter-spacing: 0.05em;
  transition: opacity 0.3s ease;
}

.social-link:hover {
  opacity: 1;
}

.footer {
  font-size: 0.85rem;
  opacity: 0.3;
  padding-bottom: 30px;
  text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .nav {
    padding: 20px 24px;
  }

  .card {
    padding: 32px 30px;
  }
}