/* Canvas background - fixed behind everything */
#whitehole-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Main content wrapper */
.content-wrapper {
  position: relative;
  z-index: 1;
}

/* Section base styles */
.section {
  position: relative;
  width: 100%;
  overflow: hidden;
}

/* Event Horizon - hero */
#event-horizon {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* Singularity - manifesto */
#singularity {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
}

#singularity::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    rgba(13, 11, 26, 0.75) 0%,
    rgba(13, 11, 26, 0.4) 50%,
    transparent 80%
  );
  pointer-events: none;
}

/* Emission zone - projects */
#emission-zone {
  padding: var(--space-xl) 0;
}

.project-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-lg) var(--space-md);
  position: relative;
  overflow: hidden; /* Clip GSAP-animated projects that start outside their section */
}

/* Dark vignette behind projects for text readability */
.project-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    rgba(13, 11, 26, 0.88) 0%,
    rgba(13, 11, 26, 0.65) 40%,
    transparent 75%
  );
  pointer-events: none;
}

/* Origin - footer */
#origin {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
  position: relative;
}

/* Scroll progress beam */
.scroll-beam {
  position: fixed;
  top: 0;
  right: 0;
  width: 2px;
  height: 0%;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--warm-white) 20%,
    var(--pulse-gold) 50%,
    var(--flare-peach) 80%,
    transparent
  );
  z-index: 100;
  pointer-events: none;
  box-shadow: 0 0 8px var(--pulse-gold), 0 0 20px var(--flare-peach);
  transition: opacity 0.3s;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: var(--space-sm) var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  mix-blend-mode: difference;
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
  opacity: 0.85;
  animation: pulse-opacity 4s ease-in-out infinite;
}

@keyframes pulse-opacity {
  0%, 100% { opacity: 0.85; }
  50% { opacity: 1; }
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.nav-link {
  position: relative;
  padding: 0.25em 0;
  cursor: none;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--warm-white);
  box-shadow: 0 0 6px var(--warm-white);
  transition: width 0.4s var(--ease-out-expo);
}

.nav-link:hover::after {
  width: 100%;
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    padding: var(--space-xs) var(--space-sm);
  }

  .nav-links {
    gap: var(--space-sm);
  }

  .project-section {
    min-height: auto;
    padding: var(--space-lg) var(--space-sm);
  }
}