/* ===== 404 Physics Playground ===== */

#not-found-main {
  z-index: 12;
  padding: 0 1rem;
  gap: 1.5rem;
  max-width: 480px;
  width: 100%;
  pointer-events: auto;
}

/* --- Title --- */

#nf-title-container {
  min-height: 4rem;
}

#nf-title {
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  text-align: center;
  transition: opacity 0.15s ease;
}

#nf-title.shattered {
  opacity: 0;
  pointer-events: none;
  position: absolute;
}

/* --- Flavor text + visitor counter --- */

#nf-flavor {
  font-size: clamp(0.85rem, 2.5vw, 1rem);
  opacity: 0.7;
  text-align: center;
  letter-spacing: 0.05em;
}

#nf-visitor {
  font-size: 0.7rem;
  opacity: 0.35;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-align: center;
  min-height: 1rem;
}

/* --- Breadcrumb cards --- */

#nf-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.nf-card {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.nf-card:hover,
.nf-card:focus-visible {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.06);
}

/* --- Egg corner easter egg --- */

#nf-egg-corner {
  position: fixed;
  bottom: 0;
  right: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  cursor: default;
  z-index: 60;
  opacity: 0.08;
  transition: opacity 0.3s ease;
  user-select: none;
  -webkit-user-select: none;
}

#nf-egg-corner:hover {
  opacity: 0.35;
}

/* --- Egg particles (burst) --- */

.nf-egg {
  position: fixed;
  font-size: 1.6rem;
  z-index: 500;
  pointer-events: none;
  animation: nf-egg-fall var(--egg-dur, 1s) ease-in forwards;
}

@keyframes nf-egg-fall {
  0% {
    opacity: 1;
    transform: translate(0, 0) rotate(0deg) scale(1);
  }
  60% {
    opacity: 1;
    transform: translate(var(--egg-dx, -60px), var(--egg-dy, -120px)) rotate(var(--egg-rot, 180deg)) scale(1.1);
  }
  100% {
    opacity: 0;
    transform: translate(var(--egg-dx2, -80px), 60vh) rotate(var(--egg-rot2, 360deg)) scale(0.6);
  }
}

/* --- Crack overlay (shell fragments) --- */

.nf-crack-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  overflow: hidden;
}

.nf-shell-fragment {
  position: absolute;
  inset: 0;
  background: #111;
  animation: nf-shard-fall var(--shard-dur, 0.9s) var(--shard-delay, 0s) cubic-bezier(0.4, 0, 1, 1) forwards;
  transform-origin: var(--shard-ox, 50%) var(--shard-oy, 50%);
}

@keyframes nf-shard-fall {
  0% {
    opacity: 1;
    transform: translate(0, 0) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translate(var(--shard-tx, 0px), var(--shard-ty, 600px)) rotate(var(--shard-rot, 25deg));
  }
}

/* --- Canvas (motion trails) --- */

#nf-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
}

/* --- Ghost --- */

#nf-ghost {
  position: fixed;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  z-index: 50;
  user-select: none;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

#nf-ghost.armed {
  opacity: 1;
  pointer-events: auto;
}

@keyframes nf-ghost-drift {
  from {
    left: -80px;
  }

  to {
    left: calc(100vw + 80px);
  }
}

/* --- Mini-game overlay --- */

#nf-game-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#nf-game-overlay[hidden] {
  display: none !important;
}

#nf-game-hud {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 2rem;
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  font-weight: 300;
  z-index: 310;
}

#nf-game-score::before {
  content: 'score ';
  font-size: 0.65rem;
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

#nf-game-timer::before {
  content: 'time ';
  font-size: 0.65rem;
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

#nf-game-close {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  color: #fff;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  z-index: 310;
  transition: border-color 0.2s ease;
}

#nf-game-close:hover {
  border-color: #fff;
}

.nf-game-ghost {
  position: fixed;
  font-size: 1.8rem;
  cursor: pointer;
  user-select: none;
  pointer-events: auto;
  z-index: 305;
  transition: transform 0.15s ease;
  line-height: 1;
}

.nf-game-ghost:hover {
  transform: scale(1.2);
}

#nf-game-result {
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-align: center;
  max-width: 280px;
}

/* --- Reduced motion --- */

@media (prefers-reduced-motion: reduce) {

  #nf-ghost,
  .nf-game-ghost,
  .nf-egg,
  .nf-shell-fragment {
    animation-duration: 0.01ms !important;
    transition: none;
  }
}