/* ============================================
   LANDING PAGE - NAVIGATION
   Full Dark Mode - Interactive Scroll Dots
   ============================================ */

.progress-nav {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem 0;
}

/* Progress line connecting dots */
.progress-nav::before {
  content: '';
  position: absolute;
  top: 1.5rem;
  bottom: 1.5rem;
  right: 4px;
  width: 2px;
  background: var(--color-gray-600);
  border-radius: 1px;
  z-index: -1;
}

/* Active progress line overlay */
.progress-nav-line {
  position: absolute;
  top: 1.5rem;
  right: 4px;
  width: 2px;
  height: 0;
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  border-radius: 1px;
  z-index: -1;
  transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px var(--color-accent-glow);
}

.progress-nav-item {
  position: relative;
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-text-subtle);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

/* Dot base styles */
.progress-nav-item::before {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-gray-500);
  background: var(--color-bg);
  transition: all 0.15s ease-out;
  position: relative;
  z-index: 2;
}

/* Outer ring for active state */
.progress-nav-item::after {
  content: '';
  position: absolute;
  right: -5px;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: transparent;
  border: 2px solid transparent;
  transition: all 0.15s ease-out;
  opacity: 0;
  transform: scale(0.5);
}

/* Active dot state */
.progress-nav-item.active::before {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: scale(1.4);
  box-shadow: 0 0 12px var(--color-accent-glow);
}

.progress-nav-item.active::after {
  border-color: var(--color-accent);
  opacity: 0.4;
  transform: scale(1);
  animation: pulse-ring 2s ease-out infinite;
}

/* Pulse animation for active dot - only runs when not scrolling */
@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 0.4;
  }

  50% {
    transform: scale(1.3);
    opacity: 0;
  }

  100% {
    transform: scale(1);
    opacity: 0;
  }
}

/* Pause CSS animations during scroll to reduce compositor work */
.lenis-scrolling .progress-nav-item.active::after {
  animation-play-state: paused;
}

/* Visited/passed dots */
.progress-nav-item.visited::before {
  background: var(--color-accent);
  border-color: var(--color-accent);
  opacity: 0.6;
}

/* Label styles */
.progress-nav-label {
  position: absolute;
  right: 2rem;
  white-space: nowrap;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  background: rgba(22, 22, 22, 0.95);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0;
  transform: translateX(10px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

/* Show label on hover */
.progress-nav-item:hover .progress-nav-label,
.progress-nav-item:focus .progress-nav-label,
.progress-nav-item.active .progress-nav-label {
  opacity: 1;
  transform: translateX(0) scale(1);
}

/* Hover state for dots */
.progress-nav-item:hover::before,
.progress-nav-item:focus::before {
  transform: scale(1.3);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-glow);
}

/* Click feedback */
.progress-nav-item:active::before {
  transform: scale(1.1);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .progress-nav {
    right: 1rem;
    gap: 1.25rem;
    padding: 1rem 0;
  }

  .progress-nav::before {
    top: 1rem;
    bottom: 1rem;
    right: 3px;
  }

  .progress-nav-line {
    top: 1rem;
    right: 3px;
  }

  .progress-nav-item::before {
    width: 8px;
    height: 8px;
  }

  .progress-nav-item::after {
    width: 16px;
    height: 16px;
    right: -4px;
  }

  .progress-nav-label {
    display: none;
  }
}

@media (max-width: 480px) {
  .progress-nav {
    right: 0.75rem;
    gap: 1rem;
  }

  .progress-nav-item::before {
    width: 6px;
    height: 6px;
  }

  .progress-nav-item::after {
    width: 14px;
    height: 14px;
    right: -4px;
  }
}