/* ============================================
   SHARED GAME STYLES
   All individual games inherit from this
   ============================================ */

/* CSS Variables - Game Theme */
:root {
  /* Primary Colors */
  --bg-dark: #0f0f1a;
  --bg-darker: #080810;
  --bg-gradient: linear-gradient(135deg, #0f0f1a 0%, #1a1025 50%, #0f0f1a 100%);

  /* Accent Colors */
  --primary: #00d4ff;
  --primary-glow: #00f0ff;
  --secondary: #10b981;
  --accent-gold: #fbbf24;
  --accent-red: #ef4444;
  --accent-purple: #a855f7;
  --accent-pink: #ec4899;
  --accent-orange: #f97316;
  --accent-cyan: #06b6d4;
  --accent-green: #22c55e;

  /* Queue Colors */
  --queue-front: #00d4ff;
  --queue-back: #a855f7;
  --queue-item: linear-gradient(135deg, #00d4ff 0%, #0ea5e9 100%);

  /* Stack Colors */
  --stack-color: linear-gradient(135deg, #f97316 0%, #ef4444 100%);

  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* UI */
  --border-color: rgba(0, 212, 255, 0.3);
  --card-bg: rgba(15, 15, 30, 0.9);
  --glass-bg: rgba(255, 255, 255, 0.05);

  /* Fonts */
  --font-display: 'Bebas Neue', sans-serif;
  --font-ui: 'Rajdhani', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Reset */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-ui);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
}

/* ============================================
   GAME LAYOUT
   ============================================ */
.game-container {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-gradient);
}

/* Header */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background: rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.back-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
}

.back-btn:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: var(--primary);
  transform: translateX(-5px);
}

.game-title {
  text-align: center;
}

.game-title h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.1em;
  color: var(--game-color, var(--primary));
  text-shadow: 0 0 30px var(--game-glow, rgba(0, 212, 255, 0.5));
}

.game-title p {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 0.2em;
}

.game-stats {
  display: flex;
  gap: 20px;
}

.stat-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
}

.stat-box .icon {
  font-size: 1.2rem;
}

.stat-box .value {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-box .label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Main Content */
.game-main {
  flex: 1;
  display: grid;
  grid-template-columns: 300px 1fr 300px;
  gap: 20px;
  padding: 20px;
  min-height: 0;
  overflow: hidden;
}

/* Side Panels */
.side-panel {
  display: flex;
  flex-direction: column;
  gap: 15px;
  overflow-y: auto;
}

.panel-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 20px;
}

.panel-card h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--primary);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Code Display */
.code-block {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 10px;
  padding: 15px;
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--secondary);
  line-height: 1.8;
}

.code-line {
  display: block;
}

.code-line.highlight {
  background: rgba(0, 212, 255, 0.2);
  margin: 0 -15px;
  padding: 0 15px;
}

.code-keyword {
  color: var(--accent-pink);
}
.code-function {
  color: var(--accent-gold);
}
.code-string {
  color: var(--secondary);
}
.code-number {
  color: var(--accent-orange);
}
.code-comment {
  color: var(--text-muted);
  font-style: italic;
}

/* Center Game Area */
.game-center {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 0;
}

.game-arena {
  flex: 1;
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 20px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.arena-header {
  padding: 15px 20px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.arena-title {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.arena-status {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-gold);
}

.arena-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px;
  gap: 30px;
  overflow: auto;
}

/* Controls */
.game-controls {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

.control-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--accent-cyan) 100%
  );
  border: none;
  border-radius: 12px;
  color: var(--bg-dark);
  cursor: pointer;
  transition: all 0.3s ease;
}

.control-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.control-btn:active {
  transform: translateY(-1px);
}

.control-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.control-btn.secondary {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.control-btn.secondary:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: var(--primary);
}

.control-btn.danger {
  background: linear-gradient(135deg, var(--accent-red) 0%, #dc2626 100%);
}

.control-btn.success {
  background: linear-gradient(135deg, var(--secondary) 0%, #059669 100%);
}

/* Input Controls */
.input-group {
  display: flex;
  gap: 10px;
  align-items: center;
}

.input-field {
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 1rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  outline: none;
  width: 150px;
  transition: all 0.3s ease;
}

.input-field:focus {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.input-field::placeholder {
  color: var(--text-muted);
}

/* ============================================
   QUEUE VISUALIZATION
   ============================================ */
.queue-visualization {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 20px;
  min-height: 120px;
}

.queue-container {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid var(--border-color);
  border-radius: 15px;
  padding: 15px 20px;
  min-width: 400px;
  min-height: 100px;
  position: relative;
}

.queue-items {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: nowrap;
}

.queue-item {
  width: 70px;
  height: 70px;
  background: var(--queue-item);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--bg-dark);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
  animation: itemEnter 0.4s ease-out;
  position: relative;
}

.queue-item.front {
  box-shadow: 0 0 25px var(--queue-front);
}

.queue-item.back {
  box-shadow: 0 0 25px var(--queue-back);
}

.queue-item.removing {
  animation: itemExit 0.4s ease-out forwards;
}

.queue-item .index {
  position: absolute;
  bottom: -25px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

@keyframes itemEnter {
  from {
    transform: translateX(50px) scale(0.5);
    opacity: 0;
  }
  to {
    transform: translateX(0) scale(1);
    opacity: 1;
  }
}

@keyframes itemExit {
  to {
    transform: translateX(-50px) scale(0.5);
    opacity: 0;
  }
}

.queue-label {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 5px 10px;
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.5);
}

.queue-label.front {
  left: -10px;
  top: -30px;
  color: var(--queue-front);
  border: 1px solid var(--queue-front);
}

.queue-label.back {
  right: -10px;
  top: -30px;
  color: var(--queue-back);
  border: 1px solid var(--queue-back);
}

.queue-empty {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 1rem;
}

.queue-arrow {
  font-size: 2rem;
  color: var(--primary);
  margin: 0 15px;
  animation: arrowPulse 1s ease-in-out infinite;
}

@keyframes arrowPulse {
  0%,
  100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}

/* ============================================
   STACK VISUALIZATION
   ============================================ */
.stack-visualization {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: 8px;
  padding: 20px;
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid var(--border-color);
  border-radius: 15px;
  min-height: 250px;
  min-width: 120px;
  position: relative;
}

.stack-item {
  width: 100px;
  height: 50px;
  background: var(--stack-color);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
  animation: stackPush 0.3s ease-out;
}

.stack-item.top {
  box-shadow: 0 0 25px var(--accent-gold);
}

.stack-item.popping {
  animation: stackPop 0.3s ease-out forwards;
}

@keyframes stackPush {
  from {
    transform: translateY(-30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes stackPop {
  to {
    transform: translateY(-30px);
    opacity: 0;
  }
}

.stack-base {
  width: 120px;
  height: 10px;
  background: var(--border-color);
  border-radius: 5px;
  margin-top: auto;
}

.stack-label {
  position: absolute;
  top: -30px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-gold);
}

/* ============================================
   LINKED LIST VISUALIZATION
   ============================================ */
.linkedlist-visualization {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.ll-node {
  display: flex;
  align-items: center;
  animation: nodeSlide 0.4s ease-out;
}

@keyframes nodeSlide {
  from {
    transform: translateX(-30px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.node-box {
  display: flex;
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid var(--primary);
  border-radius: 10px;
  overflow: hidden;
}

.node-data {
  width: 60px;
  height: 50px;
  background: var(--queue-item);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bg-dark);
}

.node-pointer {
  width: 30px;
  height: 50px;
  background: rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1rem;
}

.node-arrow {
  width: 30px;
  height: 3px;
  background: var(--primary);
  position: relative;
}

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

.node-null {
  padding: 10px 15px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.head-pointer,
.tail-pointer {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-gold);
  padding: 3px 8px;
  background: rgba(251, 191, 36, 0.2);
  border-radius: 5px;
}

/* ============================================
   DEQUE VISUALIZATION
   ============================================ */
.deque-visualization {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 30px;
}

.deque-container {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid var(--border-color);
  border-radius: 15px;
  padding: 20px;
  min-width: 500px;
  min-height: 100px;
  position: relative;
}

.deque-items {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: 0 auto;
}

.deque-item {
  width: 70px;
  height: 70px;
  background: linear-gradient(
    135deg,
    var(--accent-purple) 0%,
    var(--accent-pink) 100%
  );
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: white;
  box-shadow: 0 4px 15px rgba(168, 85, 247, 0.4);
}

.deque-item.first {
  box-shadow: 0 0 25px var(--accent-pink);
}

.deque-item.last {
  box-shadow: 0 0 25px var(--accent-purple);
}

.deque-end-marker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 8px 15px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
}

.deque-end-marker.front {
  color: var(--accent-pink);
  border: 1px solid var(--accent-pink);
}

.deque-end-marker.back {
  color: var(--accent-purple);
  border: 1px solid var(--accent-purple);
}

.deque-arrows {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 500px;
}

.deque-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.deque-arrow .arrow {
  font-size: 1.5rem;
}

.deque-arrow.front .arrow {
  color: var(--accent-pink);
}
.deque-arrow.back .arrow {
  color: var(--accent-purple);
}

/* ============================================
   OUTPUT DISPLAY
   ============================================ */
.output-panel {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 10px;
  padding: 15px;
}

.output-panel h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.output-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-align: center;
}

.output-array {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.output-array span {
  padding: 5px 12px;
  background: rgba(251, 191, 36, 0.2);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-gold);
}

/* ============================================
   LOG DISPLAY
   ============================================ */
.log-panel {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 10px;
  padding: 15px;
  max-height: 200px;
  overflow-y: auto;
}

.log-panel h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  position: sticky;
  top: 0;
  background: rgba(0, 0, 0, 0.8);
  padding: 5px 0;
}

.log-entry {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 5px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  gap: 10px;
}

.log-entry .time {
  color: var(--text-muted);
  font-size: 0.7rem;
}

.log-entry.add {
  color: var(--secondary);
}
.log-entry.remove {
  color: var(--accent-red);
}
.log-entry.peek {
  color: var(--accent-cyan);
}
.log-entry.info {
  color: var(--accent-gold);
}
.log-entry.error {
  color: var(--accent-red);
}

/* ============================================
   MESSAGES & MODALS
   ============================================ */
.message-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.message-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.message-box {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  max-width: 500px;
  text-align: center;
  animation: messagePopIn 0.4s ease-out;
}

@keyframes messagePopIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.message-box .icon {
  font-size: 4rem;
  margin-bottom: 20px;
}

.message-box h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.1em;
  margin-bottom: 15px;
}

.message-box.success h2 {
  color: var(--secondary);
}
.message-box.error h2 {
  color: var(--accent-red);
}
.message-box.info h2 {
  color: var(--primary);
}

.message-box p {
  color: var(--text-secondary);
  margin-bottom: 25px;
  line-height: 1.6;
}

.message-box .stars {
  font-size: 2.5rem;
  margin-bottom: 25px;
}

.message-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
}

/* ============================================
   TUTORIAL TOOLTIPS
   ============================================ */
.tooltip {
  position: absolute;
  background: var(--card-bg);
  border: 1px solid var(--primary);
  border-radius: 10px;
  padding: 15px;
  max-width: 250px;
  z-index: 500;
  animation: tooltipFade 0.3s ease-out;
}

@keyframes tooltipFade {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tooltip::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--primary);
}

.tooltip p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

/* ============================================
   LEVEL INDICATOR
   ============================================ */
.level-indicator {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 20px;
}

.level-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
}

.level-dot.completed {
  background: var(--secondary);
  border-color: var(--secondary);
}

.level-dot.current {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--primary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1200px) {
  .game-main {
    grid-template-columns: 250px 1fr 250px;
  }
}

@media (max-width: 992px) {
  .game-main {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }

  .side-panel {
    flex-direction: row;
    overflow-x: auto;
  }

  .panel-card {
    min-width: 250px;
  }
}

@media (max-width: 768px) {
  .game-header {
    flex-direction: column;
    gap: 15px;
    padding: 15px;
  }

  .game-title h1 {
    font-size: 1.5rem;
  }

  .game-stats {
    flex-wrap: wrap;
    justify-content: center;
  }

  .game-main {
    padding: 10px;
  }

  .queue-container,
  .deque-container {
    min-width: 100%;
    overflow-x: auto;
  }
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.hidden {
  display: none !important;
}

.shake {
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px);
  }
  75% {
    transform: translateX(10px);
  }
}

.pulse {
  animation: pulseEffect 0.5s ease-out;
}

@keyframes pulseEffect {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

.glow {
  animation: glowEffect 1s ease-in-out infinite;
}

@keyframes glowEffect {
  0%,
  100% {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.8);
  }
}