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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  background: #060608;
  color: #e0e0e0;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  overflow-x: hidden;
}

/* Fixed page-level tech background */
.bg-container {
  position: fixed;
  top: 0; left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

.bg-canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
}

/* Navigation */
.fixed-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  pointer-events: none;
}

.nav-btn {
  pointer-events: auto;
  color: white;
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  font-weight: 500;
  padding: 0.5rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 100px;
  mix-blend-mode: difference;
  transition: border-color 0.3s, background 0.3s;
}

.nav-btn:hover {
  border-color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.05);
}

/* Hero */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  z-index: 1;
  background: transparent;
}

.hero-image-container {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 14vh;
  gap: 0.4rem;
}

.signature {
  width: min(400px, 50vw);
  opacity: 0.9;
}

.subtitle {
  font-size: clamp(0.6rem, 1vw, 0.8rem);
  letter-spacing: 0.35em;
  color: rgba(0, 0, 0, 0.5);
  font-weight: 400;
}

/* Canvases */
.snow-canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  z-index: 22;
  pointer-events: none;
}

.paint-canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  z-index: 20;
  pointer-events: none;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 25;
  opacity: 0.5;
  animation: scrollBounce 2s ease-in-out infinite;
  transition: opacity 0.4s;
}

.scroll-indicator.hidden {
  opacity: 0;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255, 255, 255, 0.6);
  border-bottom: 2px solid rgba(255, 255, 255, 0.6);
  transform: rotate(45deg);
}

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

/* Mobile */
@media (max-width: 768px) {
  .fixed-nav {
    padding: 1rem 1rem;
  }

  .nav-btn {
    font-size: 0.65rem;
    padding: 0.4rem 0.9rem;
  }

  .hero-overlay {
    padding-top: 10vh;
  }

  .signature {
    width: min(300px, 65vw);
  }

  .subtitle {
    font-size: 0.55rem;
    letter-spacing: 0.25em;
  }

  .scroll-indicator {
    bottom: 1.5rem;
  }
}