/* ==========================================================================
   PORTFOLIO MOTION AND VISUAL EFFECTS CSS
   ========================================================================== */

/* Fixed Background Canvas */
#background-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

.ambient-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: var(--accent-glow);
  pointer-events: none;
  transition: background 0.5s ease;
}

/* Scroll Fade In reveal classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Avatar spin ring */
@keyframes spin {
  100% {
    transform: rotate(360deg);
  }
}

/* Image Zoom overlays (Certs) */
.cert-zoom-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  color: #ffffff;
  transition: var(--transition);
}

.cert-img-container:hover .cert-zoom-overlay {
  opacity: 1;
}

/* Lightbox overlay modal */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  display: flex;
  opacity: 1;
}

.lightbox-content {
  max-width: 90%;
  max-height: 85vh;
  object-fit: contain;
  box-shadow: var(--shadow-lg);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.lightbox.active .lightbox-content {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  color: #ffffff;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  transition: var(--transition);
}

.lightbox-close:hover {
  opacity: 1;
  transform: scale(1.1);
}