/* =====================================================
   REALM-SPECIFIC STYLES
   ===================================================== */

/* =====================================================
   SANDBOX MODE
   ===================================================== */

#sandbox-screen {
  background: var(--color-bg-dark);
  padding: var(--spacing-xl);
}

.sandbox-container {
  flex: 1;
  display: grid;
  grid-template-columns: 300px 1fr 250px;
  gap: var(--spacing-lg);
  overflow: hidden;
}

.sandbox-tools {
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.sandbox-tools h3 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  color: var(--color-fifo);
}

.ds-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
}

.ds-btn {
  background: var(--color-bg-dark);
  border: 2px solid var(--color-bg-light);
  color: var(--text-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.ds-btn:hover,
.ds-btn.active {
  border-color: var(--color-fifo);
  color: var(--color-fifo);
}

.ds-btn.active {
  background: rgba(0, 212, 255, 0.1);
}

.sandbox-controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.sandbox-controls input {
  background: var(--color-bg-dark);
  border: 2px solid var(--color-bg-light);
  color: var(--text-primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  font-size: 1rem;
}

.sandbox-controls input:focus {
  outline: none;
  border-color: var(--color-fifo);
}

#sandbox-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
}

#sandbox-buttons button {
  background: var(--color-bg-light);
  border: 1px solid var(--color-fifo);
  color: var(--color-fifo);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}

#sandbox-buttons button:hover {
  background: var(--color-fifo);
  color: var(--color-bg-dark);
}

.sandbox-code {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.sandbox-code h4 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

#sandbox-code-display {
  flex: 1;
  background: var(--color-bg-dark);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  color: var(--color-success);
  overflow: auto;
  white-space: pre-wrap;
}

.sandbox-viz {
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#sandbox-canvas {
  flex: 1;
  width: 100%;
}

#sandbox-structure {
  padding: var(--spacing-lg);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  min-height: 150px;
}

.sandbox-log {
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
}

.sandbox-log h4 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

#sandbox-log-content {
  flex: 1;
  overflow-y: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
}

.log-entry {
  padding: var(--spacing-xs) var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  border-radius: 4px;
}

.log-entry.success {
  background: rgba(0, 255, 136, 0.1);
  color: var(--color-success);
}

.log-entry.error {
  background: rgba(255, 68, 102, 0.1);
  color: var(--color-error);
}

.log-entry.info {
  background: rgba(0, 212, 255, 0.1);
  color: var(--color-fifo);
}

/* =====================================================
   VISUALIZER MODE
   ===================================================== */

#visualizer-screen {
  background: var(--color-bg-dark);
  padding: var(--spacing-xl);
}

.visualizer-container {
  flex: 1;
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: var(--spacing-lg);
  overflow: hidden;
}

.algo-selector {
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.algo-selector h3 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  color: var(--color-fifo);
  margin-bottom: var(--spacing-md);
}

.algo-btn {
  background: var(--color-bg-dark);
  border: 1px solid var(--color-bg-light);
  color: var(--text-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9rem;
  text-align: left;
  transition: all var(--transition-fast);
}

.algo-btn:hover {
  border-color: var(--color-fifo);
  color: var(--color-fifo);
}

.algo-btn.active {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--color-fifo);
  color: var(--color-fifo);
}

.viz-main {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  overflow: hidden;
}

.viz-canvas-container {
  flex: 1;
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
  overflow: hidden;
}

#visualizer-canvas {
  width: 100%;
  height: 100%;
}

.viz-controls {
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.viz-inputs {
  display: flex;
  gap: var(--spacing-sm);
}

.viz-inputs input {
  background: var(--color-bg-dark);
  border: 1px solid var(--color-bg-light);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  width: 150px;
}

.viz-inputs input:focus {
  outline: none;
  border-color: var(--color-fifo);
}

.viz-playback {
  display: flex;
  gap: var(--spacing-sm);
}

.viz-playback button {
  background: var(--color-bg-dark);
  border: 1px solid var(--color-fifo);
  color: var(--color-fifo);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition-fast);
}

.viz-playback button:hover {
  background: var(--color-fifo);
  color: var(--color-bg-dark);
}

.viz-info {
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  max-height: 200px;
  overflow-y: auto;
}

.step-display {
  font-family: var(--font-display);
  color: var(--color-gold);
  margin-bottom: var(--spacing-md);
}

#viz-explanation {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

#viz-pseudocode {
  font-size: 0.75rem;
}

/* =====================================================
   TIME CHALLENGE MODE
   ===================================================== */

#challenge-screen {
  background: var(--color-bg-dark);
  padding: var(--spacing-xl);
}

.challenge-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.challenge-selector {
  padding: var(--spacing-lg);
}

.challenge-selector h3 {
  font-family: var(--font-title);
  font-size: 1.5rem;
  color: var(--color-fifo);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.challenge-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
}

.challenge-card {
  background: var(--color-bg-medium);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

.challenge-card:hover {
  border-color: var(--color-fifo);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.challenge-card.boss {
  border-color: var(--color-error);
  background: linear-gradient(
    135deg,
    var(--color-bg-medium),
    rgba(233, 30, 99, 0.2)
  );
}

.challenge-card h4 {
  font-family: var(--font-title);
  font-size: 1.3rem;
  margin-bottom: var(--spacing-sm);
}

.challenge-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

.best-time {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--color-gold);
}

#challenge-arena {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

#challenge-arena.hidden {
  display: none;
}

.challenge-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
}

.timer {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--color-error);
}

.challenge-score {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-success);
}

#challenge-canvas {
  flex: 1;
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
}

.challenge-controls {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
}

.challenge-controls input {
  flex: 1;
  background: var(--color-bg-dark);
  border: 2px solid var(--color-bg-light);
  color: var(--text-primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  font-size: 1.1rem;
}

.challenge-controls input:focus {
  outline: none;
  border-color: var(--color-fifo);
}

.challenge-controls button {
  background: var(--color-success);
  border: none;
  color: var(--color-bg-dark);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

#challenge-task {
  padding: var(--spacing-lg);
  background: var(--color-bg-medium);
  border-radius: var(--border-radius);
  text-align: center;
}

#challenge-task h4 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  color: var(--color-gold);
  margin-bottom: var(--spacing-sm);
}

/* =====================================================
   VICTORY SCREEN
   ===================================================== */

#victory-screen {
  background: radial-gradient(
    ellipse at center,
    var(--color-bg-medium) 0%,
    var(--color-bg-dark) 100%
  );
  justify-content: center;
  align-items: center;
}

.victory-content {
  text-align: center;
  max-width: 600px;
  padding: var(--spacing-xl);
}

.victory-content h1 {
  font-family: var(--font-title);
  font-size: 3rem;
  background: linear-gradient(135deg, var(--color-gold), var(--color-fifo));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xl);
  animation: victory-glow 2s ease-in-out infinite;
}

@keyframes victory-glow {
  0%,
  100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.2);
  }
}

.stars-earned {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.big-star {
  font-size: 4rem;
  animation: star-spin 1s ease-out;
}

.big-star:nth-child(1) {
  animation-delay: 0.2s;
}
.big-star:nth-child(2) {
  animation-delay: 0.4s;
}
.big-star:nth-child(3) {
  animation-delay: 0.6s;
}

@keyframes star-spin {
  0% {
    transform: scale(0) rotate(-180deg);
    opacity: 0;
  }
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
}

.victory-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.stat-item {
  background: var(--color-bg-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  min-width: 120px;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-fifo);
}

.concept-learned {
  background: var(--color-bg-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-xl);
  border-left: 4px solid var(--color-success);
}

.concept-learned h3 {
  font-family: var(--font-title);
  font-size: 1rem;
  color: var(--color-success);
  margin-bottom: var(--spacing-sm);
}

#concept-summary {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.victory-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

/* =====================================================
   LINKED LIST VISUALIZATION
   ===================================================== */

.ll-node {
  display: flex;
  align-items: center;
  margin: var(--spacing-sm);
}

.ll-node-content {
  width: 80px;
  height: 60px;
  background: linear-gradient(135deg, var(--realm5-color), #c0392b);
  border-radius: var(--border-radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.ll-node-value {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
}

.ll-node-label {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.7);
}

.ll-arrow {
  width: 40px;
  height: 2px;
  background: var(--color-fifo);
  position: relative;
}

.ll-arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: -5px;
  border: 6px solid transparent;
  border-left-color: var(--color-fifo);
}

.ll-node.head .ll-node-content {
  border: 3px solid var(--color-success);
  box-shadow: 0 0 15px var(--color-success);
}

.ll-node.tail .ll-node-content {
  border: 3px solid var(--color-warning);
  box-shadow: 0 0 15px var(--color-warning);
}

/* Random Pointer Visualization */
.random-arrow {
  position: absolute;
  height: 2px;
  background: var(--color-deque);
  transform-origin: left center;
  z-index: 10;
}

.random-arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: -4px;
  border: 5px solid transparent;
  border-left-color: var(--color-deque);
}

/* =====================================================
   SLIDING WINDOW VISUALIZATION
   ===================================================== */

.window-viz-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

#array-container {
  display: flex;
  gap: 2px;
  padding: var(--spacing-md);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
  position: relative;
  justify-content: center;
}

.array-element {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-light);
  border-radius: var(--border-radius);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  position: relative;
}

.array-element.in-window {
  background: linear-gradient(135deg, var(--realm8-color), #27ae60);
  color: white;
}

.array-element.current-max {
  border: 3px solid var(--color-gold);
  box-shadow: 0 0 20px var(--color-gold);
}

.array-element .index {
  position: absolute;
  bottom: -20px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

#window-frame {
  position: absolute;
  height: calc(100% - 20px);
  border: 3px solid var(--color-fifo);
  border-radius: var(--border-radius);
  background: rgba(0, 212, 255, 0.1);
  transition: all var(--transition-normal);
  pointer-events: none;
}

#window-deque {
  background: rgba(155, 89, 182, 0.2);
  border: 2px solid var(--color-deque);
}

.deque-element {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-deque), #8e44ad);
  border-radius: var(--border-radius);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: white;
}

.deque-element.removing {
  animation: deque-remove 0.3s ease-out forwards;
}

@keyframes deque-remove {
  to {
    transform: translateY(-20px);
    opacity: 0;
  }
}

#window-output {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
  justify-content: center;
}

.output-item {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gold);
  color: var(--color-bg-dark);
  border-radius: var(--border-radius);
  font-family: var(--font-display);
  font-weight: 700;
  animation: output-pop 0.3s ease-out;
}

@keyframes output-pop {
  0% {
    transform: scale(0);
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
  }
}

/* =====================================================
   TWO STACKS VISUALIZATION
   ===================================================== */

.two-stacks-container {
  display: flex;
  gap: var(--spacing-xl);
  justify-content: center;
  align-items: flex-end;
  padding: var(--spacing-xl);
}

.stack-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stack-label {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.stack-items {
  display: flex;
  flex-direction: column-reverse;
  gap: 2px;
  min-height: 200px;
  min-width: 80px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm);
  border-bottom: 4px solid var(--color-fifo);
}

.stack-items.stack1 .stack-element {
  background: linear-gradient(135deg, var(--color-fifo), #0088aa);
}

.stack-items.stack2 .stack-element {
  background: linear-gradient(135deg, var(--color-deque), #8e44ad);
}

.transfer-arrow {
  font-size: 3rem;
  color: var(--color-warning);
  animation: transfer-pulse 1s ease-in-out infinite;
}

@keyframes transfer-pulse {
  0%,
  100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

/* =====================================================
   FREQUENCY MAP VISUALIZATION
   ===================================================== */

.freq-map-container {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.char-stream {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
}

.stream-char {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-light);
  border-radius: var(--border-radius);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
}

.stream-char.processed {
  background: var(--color-fifo);
  color: var(--color-bg-dark);
}

.stream-char.current {
  border: 2px solid var(--color-warning);
  animation: current-pulse 0.5s ease-in-out infinite;
}

@keyframes current-pulse {
  0%,
  100% {
    box-shadow: 0 0 10px var(--color-warning);
  }
  50% {
    box-shadow: 0 0 20px var(--color-warning);
  }
}

.freq-table {
  width: 200px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.freq-table h4 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.freq-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  background: var(--color-bg-light);
  border-radius: 4px;
}

.freq-char {
  font-family: var(--font-display);
  font-weight: 700;
}

.freq-count {
  color: var(--color-fifo);
}

.freq-count.repeated {
  color: var(--color-error);
}

/* =====================================================
   NUMBER GENERATOR (FACTORY) VISUALIZATION
   ===================================================== */

.factory-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.conveyor-belt {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background: linear-gradient(
    to right,
    var(--color-bg-dark),
    var(--color-bg-light),
    var(--color-bg-dark)
  );
  border-radius: var(--border-radius);
  overflow-x: auto;
  min-height: 100px;
  align-items: center;
}

.factory-item {
  min-width: 80px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--realm3-color), #7dcea0);
  border-radius: var(--border-radius);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-bg-dark);
  animation: conveyor-move 0.5s ease-out;
}

@keyframes conveyor-move {
  from {
    transform: translateX(50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.factory-output {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
}

.output-number {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-gold);
  color: var(--color-bg-dark);
  border-radius: var(--border-radius);
  font-family: var(--font-display);
  font-weight: 700;
  animation: output-pop 0.3s ease-out;
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */

@media (max-width: 1200px) {
  #game-screen {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto auto;
  }

  #quest-panel {
    grid-row: auto;
    grid-column: 1;
    flex-direction: row;
  }

  .quest-card,
  .complexity-card {
    flex: 1;
  }
}

@media (max-width: 900px) {
  .sandbox-container {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }

  .visualizer-container {
    grid-template-columns: 1fr;
  }

  .algo-selector {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .game-title .title-queue {
    font-size: 3rem;
  }

  .game-title .title-worlds {
    font-size: 4rem;
  }
}

@media (max-width: 600px) {
  .game-title .title-queue {
    font-size: 2rem;
  }

  .game-title .title-worlds {
    font-size: 2.5rem;
    letter-spacing: 0.1em;
  }

  .menu-buttons {
    padding: 0 var(--spacing-md);
  }

  .realm-grid {
    grid-template-columns: 1fr;
  }

  .action-buttons {
    flex-wrap: wrap;
  }

  .challenge-cards {
    grid-template-columns: 1fr;
  }
}