/* Periodic Table Modal Styles */

.periodic-table-button {
  background: linear-gradient(135deg, #96009b, #96009b);
  color: white !important;
  border: none;
  border-radius: 12px;
  padding: 8px 15px;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 0 #610064, 0 6px 15px rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  margin: 0 5px;
}

.periodic-table-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 0 #610064, 0 8px 20px rgba(0, 0, 0, 0.3);
}

.periodic-table-button:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #610064, 0 3px 10px rgba(0, 0, 0, 0.2);
}

/* Modal Container */
.periodic-table-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  overflow: auto;
  animation: fadeIn 0.3s ease-in-out;
}

.periodic-table-modal.closing {
  animation: fadeOut 0.3s ease-in-out;
}

.periodic-table-modal.visible {
  display: flex;
  justify-content: center;
  align-items: center;
}

.periodic-table-container {
  background: #111111;
  border-radius: 25px;
  padding: 20px;
  width: 90%;
  max-width: 1400px;
  max-height: 85vh;
  overflow: auto;
  position: relative;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  color: white;
  animation: popOut 0.4s ease-out;
}

.periodic-table-modal.closing .periodic-table-container {
  animation: popIn 0.3s ease-in;
}

.modal-close-button {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 28px;
  font-weight: bold;
  background: none;
  border: none;
  color: #bbbbbb;
  cursor: pointer;
  z-index: 10;
  transition: color 0.2s ease;
}

.modal-close-button:hover {
  color: #ffffff;
}

/* Animation keyframes */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

@keyframes popOut {
  0% {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
  }
  80% {
    transform: scale(1.02) translateY(-5px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes popIn {
  0% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(0.8);
  }
}

/* Periodic Table Grid */
.periodic-table {
  display: grid;
  grid-template-columns: repeat(18, 1fr);
  grid-gap: 3px;
}

.element {
  padding: 0px 8px;
  text-align: center;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 10px;
}

.element:hover {
  transform: scale(1.1);
  z-index: 10;
}

.atomic-number {
  font-size: 15px;
  font-weight: bold;
  position: absolute;
  top: 3px;
  left: 3px;
}

.symbol {
  font-size: 20px;
  font-weight: bold;
  margin: 0;
}

.name {
  font-size: 8px;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Element categories */
.alkali-metal { background-color: #eb004d; }
.alkaline-earth { background-color: #d00031; }
.transition-metal { background-color: #f17700; }
.post-transition { background-color: #cc0078; }
.metalloid { background-color: #f770ff; }
.nonmetal { background-color: #ff6c5a; }
.noble-gas { background-color: #420057; }
.lanthanide { background-color: #38163a; }
.actinide { background-color: #6e0029; }
.unknown { background-color: #303262; }

/* Phase states */
.solid { background-color: #ff7b00; }
.liquid { background-color: #c300ff; }
.gas { background-color: #ff0077; }
.unknown-phase { background-color: #222222; }

/* Temperature control panel in the periodic table */
.temperature-control-cell {
  grid-column: span 10;
  grid-row: span 2;
  background: rgba(29, 29, 29, 0.7);
  border-radius: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  height: 100%;
  max-height: 100%;
  width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

/* Temperature control panel */
.temperature-control {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  height: 100%;
  padding: 20px;
  box-sizing: border-box;
}

.temperature-header {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  margin-bottom: 5px;
  position: relative;
  height: 35px;
}

.temperature-toggle {
  position: absolute;
  left: 0;
  margin: 0;
  padding: 0;
  width: auto;
  display: flex;
  justify-content: flex-start;
}

/* Temperature value container with modern dial look */
.temperature-value-container {
  flex: 0 0 auto;
  width: auto;
  max-width: 120px;
  display: flex;
  justify-content: center;
  background: linear-gradient(145deg, #111111, #0a0a0a);
  border: 1px solid #1b1b1b;
  border-radius: 8px;
  padding: 3px 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  margin: 0 auto;
}

/* New temperature toggle style based on calculator's angle-mode-toggle */
.temp-mode-toggle {
  display: flex;
  margin-right: 10px;
  background: #333;
  border-radius: 16px;
  padding: 2px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2) inset;
}

.temp-mode-btn {
  background: #2a2a2a;
  color: white;
  border: none;
  border-radius: 14px;
  padding: 5px 8px;
  font-size: 12px;
  font-weight: bold;
  margin: 0;
  min-width: 40px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 0 #1a1a1a, 0 4px 10px rgba(0, 0, 0, 0.2);
}

.temp-mode-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 0 #1a1a1a, 0 5px 15px rgba(0, 0, 0, 0.3);
}

.temp-mode-btn.active {
  background: #9c27b0;
  box-shadow: 0 2px 0 #6a1b9a, 0 4px 10px rgba(0, 0, 0, 0.2);
}


.temperature-slider-container {
  width: 110%;
  height: calc(100% - 35px);
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: visible;
  margin-top: 0;
  transition: opacity 0.3s ease;
}

/* Disabled state for the temperature slider container */
.temperature-slider-container.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.temperature-slider {
  width: 90%;
  margin: 2px 0;
  height: 12px;
  transition: opacity 0.3s ease;
  /* Adding styling to the slider */
  -webkit-appearance: none;
  background: transparent;
}

/* Styling the slider track for different browsers */
.temperature-slider::-webkit-slider-runnable-track {
  width: 100%;
  height: 8px;
  cursor: pointer;
  background: linear-gradient(to right, #7612f8, #ff0062);
  border-radius: 10px;
}

/* Styling the slider thumb for different browsers */
.temperature-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: #ffa600;
  cursor: pointer;
  margin-top: -5px; /* Position the thumb vertically */
  transition: all 0.2s ease;
}

.temperature-slider::-moz-range-thumb {
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: #ffa600;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.temperature-slider::-ms-thumb {
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: #ffa600;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

/* Hover effects for slider thumb */
.temperature-slider::-webkit-slider-thumb:hover {
  background: #ffa600;
  transform: scale(1.1);
}

.temperature-slider::-moz-range-thumb:hover {
  background: #ffa600;
  transform: scale(1.1);
  box-shadow: none;
}

.temperature-slider::-ms-thumb:hover {
  background: #ffa600;
  transform: scale(1.1);
  box-shadow: none;
}

.temperature-slider::-moz-range-thumb:hover {
  background: #f8f8f8;
  transform: scale(1.1);
  box-shadow: 0 0 10px rgba(156, 39, 176, 0.7);
}

.temperature-slider::-ms-thumb:hover {
  background: #f8f8f8;
  transform: scale(1.1);
  box-shadow: 0 0 10px rgba(156, 39, 176, 0.7);
}

.temperature-slider:focus {
  outline: none;
}

.temperature-value {
  font-size: 16px;
  font-weight: bold;
  color: white;
  margin: 0;
  white-space: nowrap;
  text-shadow: 0 0 5px rgba(255, 255, 255, 0.3);
  transition: color 0.3s ease;
  display: block;
  text-align: center;
  width: 100%;
}

.temperature-value.disabled {
  color: #666666;
  text-shadow: none;
}

.phase-legend {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
  gap: 18px;
}

.phase-legend-item {
  display: flex;
  align-items: center;
  margin: -20px 20px;
  font-size: 16px;
  font-weight: bold;
}

.phase-indicator {
  width: 14px;
  height: 14px;
  margin-right: 5px;
  border-radius: 2px;
}

.phase-indicator.solid { background-color: #ff7b00; }
.phase-indicator.liquid { background-color: #c300ff; }
.phase-indicator.gas { background-color: #ff0077; }
.phase-indicator.unknown-phase { background-color: #222222; }

/* Placeholders for table layout */
.placeholder {
  grid-column: span 1;
  visibility: hidden;
}

.lanthanide-row, .actinide-row {
  grid-column: span 18;
  height: 20px;
}

/* Legend */
.legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 15px 0;
  gap: 5px;
}

.legend-item {
  display: flex;
  align-items: center;
  margin-right: 15px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  transition: opacity 0.3s ease, filter 0.3s ease;
}

.legend-item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(70%);
}

.legend-color {
  width: 20px;
  height: 20px;
  margin-right: 5px;
  border-radius: 6px;
  border: none;
}

/* Atom Visualization */
.atom-modal {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #161616;
  border-radius: 20px;
  padding: 20px;
  width: 420px;
  z-index: 3000;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  color: white;
  text-align: center;
  opacity: 0;
}

.atom-modal.visible {
  display: block;
  animation: atom-fadeIn 0.3s forwards, atom-scaleIn 0.3s forwards;
}

.atom-modal.closing {
  animation: atom-fadeOut 0.3s forwards, atom-scaleOut 0.3s forwards;
}

@keyframes atom-fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes atom-fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes atom-scaleIn {
  from { transform: translate(-50%, -50%) scale(0.8); }
  to { transform: translate(-50%, -50%) scale(1); }
}

@keyframes atom-scaleOut {
  from { transform: translate(-50%, -50%) scale(1); }
  to { transform: translate(-50%, -50%) scale(0.8); }
}

.atom-container {
  position: relative;
  width: 300px;
  height: 330px;
  margin: 0 auto 50px;
  pointer-events: none;
}

.nucleus {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: #b700ff;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 15px;
  font-weight: bold;
  box-shadow: 0 0 30px rgba(171, 45, 255, 0.5);
  z-index: 10;
  pointer-events: auto;
  transition: all 0.3s ease;
}

.nucleus:hover {
  box-shadow: 0 0 30px rgba(171, 45, 255, 0.8);
  transform: translate(-50%, -50%) scale(1.1);
}

/* Nucleus clone for zoom animation */
#nucleus-clone {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: #b700ff;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 15px;
  font-weight: bold;
  box-shadow: 0 0 30px rgba(171, 45, 255, 0.5);
  z-index: 1000;
  pointer-events: none;
  opacity: 1;
  will-change: transform, opacity;
}

/* Particle clone for zoom animation */
#particle-clone {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  z-index: 1000;
  pointer-events: none;
  opacity: 1;
  will-change: transform, opacity, box-shadow, left, top;
  transition: transform 0.05s linear, opacity 0.05s linear, box-shadow 0.05s linear, left 0.05s linear, top 0.05s linear;
  mix-blend-mode: screen;
}

/* Nucleus structure view styles */
.enlarged-nucleus {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 250px;
  height: 250px;
  background: rgba(183, 0, 255, 0.15);
  border-radius: 50%;
  box-shadow: 0 0 50px rgba(171, 45, 255, 0.5);
  animation: pulsate 4s ease-in-out infinite;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: visible;
  will-change: transform, width, height, opacity;
  transition: width 0.2s ease, height 0.2s ease, opacity 0.2s ease;
}

/* Adding nucleus back button styles */
.nucleus-back-button {
  position: absolute;
  top: 10px;
  left: -40px;
  background: #9c27b0;
  color: white !important;
  border: none;
  border-radius: 16px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: bold;
  cursor: pointer;
  z-index: 5000;
  box-shadow: 0 4px 0 #6a1b9a, 0 6px 15px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  will-change: opacity, transform;
}

.nucleus-back-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 #6a1b9a, 0 8px 20px rgba(0, 0, 0, 0.35);
}

@keyframes pulsate {
  0% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.03); }
  100% { transform: translate(-50%, -50%) scale(1); }
}

.nucleus-title {
  position: absolute;
  top: 10px;
  left: 0;
  right: 0;
  text-align: center;
  color: #ffffff;
  font-size: 16px;
  font-weight: bold;
}

.nuclear-particle {
  position: absolute;
  border-radius: 50%;
  transition: transform 0.2s ease, opacity 0.5s ease;
  opacity: 0.95;
  mix-blend-mode: screen;
  box-sizing: border-box;
  border: 1px solid rgba(255, 255, 255, 0.2);
  pointer-events: auto;
  cursor: pointer;
}

.nuclear-particle.proton {
  background: #ff2a6d;
  box-shadow: 0 0 8px rgba(255, 42, 109, 0.7);
  z-index: 2;
}

.nuclear-particle.neutron {
  background: #05d9e8;
  box-shadow: 0 0 8px rgba(5, 217, 232, 0.7);
  z-index: 1;
}

.nuclear-particle:hover {
  transform: scale(1.3);
  z-index: 10 !important;
  opacity: 1;
}

.nucleus-legend {
  position: absolute;
  bottom: -40px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 20px;
  color: white;
  background: rgba(255, 255, 255, 0.05);
  padding: 10px;
  border-radius: 10px;
  transition: opacity 0.5s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.nucleus-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nucleus-legend-circle {
  width: 14px;
  height: 14px;
  border-radius: 50%;
}

.nucleus-legend-circle.proton {
  background: #ff2a6d;
  box-shadow: 0 0 8px rgba(255, 42, 109, 0.7);
}

.nucleus-legend-circle.neutron {
  background: #05d9e8;
  box-shadow: 0 0 8px rgba(5, 217, 232, 0.7);
}

.electron-shell-with-electrons {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transform-origin: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, opacity 0.3s ease;
  pointer-events: auto;
  background-color: transparent;
  will-change: opacity, transform;
}

/* Remove all extra shell-ring CSS */
.shell-ring {
  display: none;
}

.electron-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: #00ffff;
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0, 255, 255, 0.7);
}

.atom-info {
  margin-top: 45px;
  font-size: 16px;
}

.atom-info h3 {
  margin-bottom: 10px;
  color: #ffffff;
}

.atom-info p {
  margin: 5px 0;
}

/* New styles for the modernized atom info section */
.atom-title {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.atom-icon {
  font-size: 24px;
  margin-right: 10px;
  color: #ff9f43;
}

.atom-info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 5px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

@media (max-width: 600px) {
  .atom-info-grid {
    grid-template-columns: 1fr;
  }
}

.info-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: center;
  padding: 8px 12px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  transition: all 0.2s ease;
}

.info-item:hover {
  background: rgba(255, 255, 255, 0.08);
}

.info-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #232323;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
}

.info-icon i {
  font-size: 16px;
  color: #ffffff;
}

.info-content {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.info-label {
  font-size: 12px;
  color: #b8b8b8;
  margin-bottom: 3px;
}

.info-value {
  font-size: 16px;
  font-weight: bold;
  color: #ffffff;
}

.atom-close-button {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  color: #bbbbbb;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.2s ease;
  line-height: 1;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.atom-close-button:hover {
  color: #ffffff;
}

/* Highlighted shell effect */
.highlight-shell {
  border-color: #00ffff !important;
  box-shadow: 0 0 15px rgba(0, 255, 255, 0.5) !important;
}

/* Orbital tooltip styles */
.orbital-tooltip {
  position: fixed;
  background-color: rgba(73, 0, 97, 0.9);
  color: white;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  z-index: 4000;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  pointer-events: none;
  border: 1px solid #8100b0;
}

.orbital-name {
  font-weight: bold;
  color: #00ffff;
  margin-bottom: 3px;
}

.orbital-electrons {
  font-size: 12px;
}

/* Responsive Adjustments */
@media screen and (max-width: 1024px) {
  .periodic-table-container {
    width: 95%;
    padding: 15px;
  }
  
  .element {
    padding: 4px 2px;
    min-height: 45px;
  }
  
  .symbol {
    font-size: 14px;
  }
  
  .name {
    font-size: 6px;
  }
  
  .atomic-number {
    font-size: 8px;
  }
}

media screen and (max-width: 768px) {
  .periodic-table {
    grid-gap: 2px;
  }
  
  .element {
    min-height: 35px;
  }
  
  .symbol {
    font-size: 12px;
  }
  
  .name {
    display: none;
  }
  
  .legend {
    font-size: 10px;
  }
}

/* Removing the Nucleus configuration panel styles since they're no longer needed */
.nucleus-config-panel,
.config-control,
.config-control label,
.config-control input[type="range"],
.config-control input[type="range"]::-webkit-slider-thumb,
.config-control input[type="range"]::-moz-range-thumb,
.config-control span {
  display: none;
}

/* Element highlighting and dimming styles */
.element-highlighted {
  background-color: #ff8000 !important; /* Orange color */
  z-index: 5;
  transition: background-color 0.3s ease;
}

.element-dimmed {
  background-color: #222222 !important; /* Dark color */
  transition: background-color 0.3s ease;
}

/* Quark View Styles */
.quark-container {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 250px;
  height: 250px;
  transform: translate(-50%, -50%);
  /* border: 1px dashed cyan; */ /* Remove temporary border */
  pointer-events: none; /* Allow clicks to pass through container */
}

.probability-sphere {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(253, 253, 253, 0.1) 0%, rgba(160, 32, 240, 0.3) 50%, rgba(255, 45, 255, 0.404) 70%);
  /* Add animation for oscillation later */
  /* animation: sphere-oscillate 5s ease-in-out infinite; */
  box-shadow: 0 0 60px rgba(160, 32, 240, 0.3);
}

.quark {
  position: absolute;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  font-weight: bold;
  color: white;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.3), inset 0 0 10px rgba(0,0,0,0.4);
  z-index: 10;
}

.quark.up-quark {
  /* background defined inline for now */
  box-shadow: 0 0 15px rgba(255, 58, 58, 0.7), inset 0 0 10px rgba(0,0,0,0.4);
}

.quark.down-quark {
  /* background defined inline for now */
  box-shadow: 0 0 15px rgba(58, 140, 255, 0.7), inset 0 0 10px rgba(0,0,0,0.4);
}

/* Reusing nucleus back button styles, but ensure it's clickable */
.quark-back-button {
  pointer-events: auto;
  position: absolute;
  top: 10px;
  left: -50px;
}

/* Gluon Styles */
.gluon-container {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none;
  overflow: hidden; /* Contain gluons visually */
}

.gluon {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  /* background-color set inline */
  box-shadow: 0 0 5px rgba(255, 255, 255, 0.7);
  z-index: 5; /* Below quarks */
  will-change: left, top;
}

/* Keyframes for probability sphere oscillation */
@keyframes sphere-oscillate {
  0% {
    transform: scale(1);
    opacity: 0.8;
    box-shadow: 0 0 60px rgba(160, 32, 240, 0.3);
  }
  50% {
    transform: scale(1.05);
    opacity: 1;
    box-shadow: 0 0 80px rgba(160, 32, 240, 0.726);
  }
  100% {
    transform: scale(1);
    opacity: 0.8;
    box-shadow: 0 0 60px rgba(160, 32, 240, 0.3);
  }
}

/* Apply animation to the sphere */
.probability-sphere {
  animation: sphere-oscillate 6s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
  transform-origin: center center; /* Ensure scaling happens from the center */
}

/* Quark Legend Styles (Restored and Updated) */
.quark-legend {
  position: absolute;
  bottom: -40px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 15px;
  color: white;
  background: rgba(255, 255, 255, 0.05);
  padding: 10px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: opacity 0.5s ease;
  pointer-events: none; /* Legend doesn't need interaction */
  z-index: 5500; /* Below back button but above other content */
}

.quark-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.quark-legend-circle {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: none;
}

.quark-legend-circle.up-quark {
  background-color: #ff3a3a; /* Red */
  box-shadow: 0 0 8px rgba(255, 58, 58, 0.7);
}

.quark-legend-circle.down-quark {
  background-color: #3a8cff; /* Blue */
  box-shadow: 0 0 8px rgba(58, 140, 255, 0.7);
}

.quark-legend-circle.gluon-legend {
  background-color: #ffff00; /* Yellow */
  box-shadow: 0 0 8px rgba(255, 255, 0, 0.7);
}