/* MOBILE-FIRST RESPONSIVE GAME BOARD */

#game-board {
  display: grid;
  grid-template-columns: repeat(var(--board-cols), var(--cell-size));
  grid-template-rows: repeat(var(--board-rows), var(--cell-size));
  gap: var(--gap);
  
  /* Mobile-first responsive sizing */
  width: min-content;
  max-width: 100vw;
  /* Allow full board height; the page will scroll if necessary */
  max-height: none;
  
  /* Center the board */
  margin: 0 auto;
  padding: var(--gap);
  
  /* Styling */
  background: linear-gradient(135deg, #151a32 30%, #1b2d56 100%);
  border-radius: clamp(12px, 3vw, 20px);
  border: clamp(2px, 0.5vw, 3px) solid rgba(0, 226, 255, 0.4);
  
  /* Mobile-optimized shadows */
  box-shadow: 
    0 0 clamp(20px, 5vw, 50px) rgba(0, 226, 255, 0.4), 
    0 0 clamp(15px, 3vw, 30px) rgba(0, 0, 0, 0.8),
    0 0 0 clamp(2px, 0.5vw, 4px) rgba(0, 226, 255, 0.3);
  
  /* Smooth scrolling for overflow */
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  
  /* Prevent unwanted interactions */
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-x pan-y; /* Allow both horizontal and vertical scrolling */
  
  /* Enhanced board glow animation */
  animation: boardGlow 4s ease-in-out infinite;
  
  /* Ensure proper layout */
  position: relative;
  z-index: 1; /* Positive z-index so cells are clickable */
  
  /* ENHANCED CONTAINER ISOLATION FOR PERFORMANCE */
  contain: layout style paint; /* Aggressive containment for performance */
  isolation: isolate; /* Create new stacking context for proper layer management */
  
  /* HARDWARE ACCELERATION HINTS */
  will-change: scroll-position; /* Board can scroll, hint for GPU acceleration */
  transform: translate3d(0, 0, 0); /* Force GPU layer creation */
  backface-visibility: hidden; /* Prevent flicker during transforms */
}

/* 16:9 Mobile Optimization */
@media (max-width: 667px) and (min-aspect-ratio: 16/9) {
  :root {
    --cell-size: clamp(26px, 6.5vw, 38px); /* Smaller cells for 16:9 */
    --gap: clamp(1px, 0.2vw, 2px); /* Tighter gaps */
  }
  
  #game-board {
    /* Reduce padding and margins for more board space */
    padding: clamp(2px, 0.3vw, 4px);
    border-radius: clamp(8px, 2vw, 16px);
    border-width: clamp(1px, 0.3vw, 2px);
    
    /* Optimize shadows for performance */
    box-shadow: 
      0 0 clamp(10px, 3vw, 25px) rgba(0, 226, 255, 0.3), 
      0 0 clamp(8px, 2vw, 16px) rgba(0, 0, 0, 0.6);
    
    /* Center with minimal margin */
    margin: 2px auto;
  }
  
  .cell {
    /* Compact cells */
    font-size: calc(var(--cell-size) * 0.22);
    border-radius: clamp(4px, 1.5vw, 8px);
    border-width: clamp(1px, 0.2vw, 2px);
    
    /* Minimize shadows */
    box-shadow: 
      0 0 clamp(3px, 0.8vw, 6px) rgba(0, 226, 255, 0.15), 
      0 0 clamp(1px, 0.3vw, 2px) rgba(0, 0, 0, 0.4);
  }
  
  /* Reduce animation intensity for performance */
  @keyframes boardGlow {
    0%, 100% {
      box-shadow: 
        0 0 clamp(10px, 3vw, 25px) rgba(0, 226, 255, 0.3), 
        0 0 clamp(8px, 2vw, 16px) rgba(0, 0, 0, 0.6);
    }
    50% {
      box-shadow: 
        0 0 clamp(15px, 4vw, 30px) rgba(0, 226, 255, 0.4), 
        0 0 clamp(10px, 3vw, 20px) rgba(0, 0, 0, 0.7);
    }
  }
  
  /* Compact possible move indicators */
  .cell.possible-move {
    box-shadow:
      0 0 clamp(8px, 2vw, 16px) rgba(0, 226, 255, 0.7),
      0 0 clamp(12px, 3vw, 24px) rgba(0, 226, 255, 0.4);
    transform: scale(1.06);
  }
  
  /* Smaller portal effects */
  .portal-icon {
    font-size: calc(var(--cell-size) * 0.35);
  }
  
  .rock-icon {
    font-size: calc(var(--cell-size) * 0.35);
  }
  
  /* Compact portal cooldown */
  .portal-cooldown-text {
    width: clamp(10px, 3.5vw, 14px);
    height: clamp(10px, 3.5vw, 14px);
    font-size: calc(var(--cell-size) * 0.13);
  }
  
  /* Smaller enemy indicators */
  .enemy-plan-indicator,
  .enemy-attack-indicator,
  .enemy-push-indicator {
    width: clamp(10px, 3vw, 14px);
    height: clamp(10px, 3vw, 14px);
    font-size: calc(var(--cell-size) * 0.2);
  }
  
  .enemy-order {
    width: clamp(12px, 3.5vw, 16px);
    height: clamp(12px, 3.5vw, 16px);
    font-size: calc(var(--cell-size) * 0.2);
  }
}

/* Responsive board glow animation */
@keyframes boardGlow {
  0%, 100% {
    box-shadow: 
      0 0 clamp(20px, 5vw, 50px) rgba(0, 226, 255, 0.4), 
      0 0 clamp(15px, 3vw, 30px) rgba(0, 0, 0, 0.8),
      0 0 0 clamp(2px, 0.5vw, 4px) rgba(0, 226, 255, 0.3);
  }
  50% {
    box-shadow: 
      0 0 clamp(30px, 7vw, 70px) rgba(0, 226, 255, 0.6), 
      0 0 clamp(20px, 4vw, 40px) rgba(0, 0, 0, 0.9),
      0 0 0 clamp(3px, 0.7vw, 5px) rgba(0, 226, 255, 0.5);
  }
}

/* MOBILE-FIRST GAME CELLS */
.cell {
  width: var(--cell-size);
  height: var(--cell-size);
  min-width: var(--mobile-touch-target);
  min-height: var(--mobile-touch-target);
  
  /* Mobile-optimized styling */
  background: linear-gradient(145deg, var(--cell-bg-gradient-1) 70%, var(--cell-bg-gradient-2) 100%);
  border: clamp(1px, 0.3vw, 3px) solid var(--cell-border);
  border-radius: clamp(6px, 2vw, 12px);
  
  /* Layout */
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-sizing: border-box;
  
  /* Typography */
  font-weight: 700;
  font-size: calc(var(--cell-size) * 0.25);
  font-family: 'Audiowide', 'Orbitron', sans-serif;
  
  /* Interactive states */
  cursor: pointer;
  transition: all 0.2s ease;
  overflow: visible; /* Allow animations to extend beyond cell bounds */
  outline: none;
  
  /* Mobile touch optimizations */
  -webkit-tap-highlight-color: transparent;
  touch-action: pan-x pan-y; /* Allow scrolling while maintaining cell interactions */
  
  /* Visual effects */
  box-shadow: 
    0 0 clamp(5px, 1vw, 10px) rgba(0, 226, 255, 0.2), 
    0 0 clamp(2px, 0.5vw, 4px) rgba(0, 0, 0, 0.6);
  
  z-index: 2; /* Positive z-index so cells are clickable */
  
  /* ENHANCED CONTAINER ISOLATION FOR PERFORMANCE */
  contain: layout style; /* Layout containment but allow paint overflow for animations */
  
  /* HARDWARE ACCELERATION HINTS */
  will-change: transform, box-shadow; /* Cells can transform and change shadows */
  transform: translate3d(0, 0, 0); /* Force GPU layer for smooth interactions */
  backface-visibility: hidden; /* Prevent flicker during state changes */
}

/* ENHANCED MOBILE TOUCH FEEDBACK */
.cell:active:not(.rock):not(.portal) {
  transform: scale(1.05);
  box-shadow: 
    0 0 clamp(10px, 3vw, 20px) rgba(0, 226, 255, 0.8), 
    0 0 clamp(5px, 2vw, 10px) rgba(0, 0, 0, 0.9);
  border-color: rgba(58, 68, 134, 0.8);
  transition: all 0.1s ease;
}

/* Touch ripple effect for mobile */
.cell::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 226, 255, 0.6), transparent);
  transform: translate(-50%, -50%);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
}

.cell:active::before {
  animation: touchRipple 0.6s ease-out;
}

@keyframes touchRipple {
  0% {
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    width: 200%;
    height: 200%;
    opacity: 0;
  }
}

/* MOBILE SELECTED/TARGET CELLS */
.cell.selected, .cell.target {
  background: linear-gradient(135deg, 
    rgba(0, 226, 255, 0.15) 0%, 
    rgba(0, 226, 255, 0.25) 100%);
  border-color: #00e2ff;
  box-shadow: 
    0 0 clamp(15px, 4vw, 30px) rgba(0, 226, 255, 0.9), 
    0 0 clamp(25px, 6vw, 50px) rgba(0, 226, 255, 0.4);
  animation: cellSelectPulse 1.5s ease-in-out infinite;
  z-index: 3; /* Above base cells and clickable */
}

@keyframes cellSelectPulse {
  0%, 100% { 
    box-shadow: 
      0 0 clamp(15px, 4vw, 30px) rgba(0, 226, 255, 0.9), 
      0 0 clamp(25px, 6vw, 50px) rgba(0, 226, 255, 0.4);
  }
  50% { 
    box-shadow: 
      0 0 clamp(25px, 6vw, 40px) rgba(0, 226, 255, 0.9), 
      0 0 clamp(15px, 4vw, 25px) rgba(0, 226, 255, 0.9);
  }
}

/* MOBILE POSSIBLE MOVE HIGHLIGHTING */
.cell.possible-move {
  box-shadow:
    0 0 clamp(15px, 4vw, 35px) rgba(0, 226, 255, 0.9),
    0 0 clamp(25px, 6vw, 60px) rgba(0, 226, 255, 0.6),
    inset 0 0 clamp(8px, 2vw, 15px) rgba(0, 226, 255, 0.3);
  border: clamp(2px, 0.5vw, 3px) dashed #00e2ff;
  background: linear-gradient(145deg, #1e2a48 50%, #253555 100%);
  transform: scale(1.1);
  animation: pulsePossibleMove 1.5s infinite ease-in-out;
  position: relative;
}

/* Enhanced possible move indicator */
.cell.possible-move::after {
  content: '';
  position: absolute;
  top: -clamp(2px, 1vw, 5px);
  left: -clamp(2px, 1vw, 5px);
  right: -clamp(2px, 1vw, 5px);
  bottom: -clamp(2px, 1vw, 5px);
  border: clamp(1px, 0.3vw, 2px) solid rgba(0, 226, 255, 0.4);
  border-radius: clamp(8px, 3vw, 15px);
  animation: expandIndicator 1.5s infinite ease-in-out;
}

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

@keyframes pulsePossibleMove {
  0%, 100% { 
    box-shadow:
      0 0 clamp(15px, 4vw, 30px) rgba(0, 226, 255, 0.8),
      0 0 clamp(25px, 6vw, 50px) rgba(0, 226, 255, 0.5);
    transform: scale(1.08);
  }
  50% { 
    box-shadow:
      0 0 clamp(20px, 5vw, 45px) rgba(0, 226, 255, 0.9),
      0 0 clamp(35px, 8vw, 70px) rgba(0, 226, 255, 0.6);
    transform: scale(1.1);
  }
}

/* MOBILE BERSERK MOVEMENT */
.cell.possible-move.berserk-move {
  box-shadow:
    0 0 clamp(15px, 4vw, 35px) rgba(220, 20, 60, 0.9),
    0 0 clamp(25px, 6vw, 60px) rgba(220, 20, 60, 0.6),
    inset 0 0 clamp(8px, 2vw, 15px) rgba(220, 20, 60, 0.3);
  border: clamp(2px, 0.5vw, 3px) dashed #DC143C;
  background: linear-gradient(145deg, #3a1515 50%, #4a2020 100%);
  transform: scale(1.1);
  animation: pulseBerserkMove 1.5s infinite ease-in-out;
}

@keyframes pulseBerserkMove {
  0%, 100% { 
    box-shadow:
      0 0 clamp(15px, 4vw, 30px) rgba(220, 20, 60, 0.8),
      0 0 clamp(25px, 6vw, 50px) rgba(220, 20, 60, 0.5);
    transform: scale(1.08);
  }
  50% { 
    box-shadow:
      0 0 clamp(20px, 5vw, 45px) rgba(220, 20, 60, 0.9),
      0 0 clamp(35px, 8vw, 70px) rgba(220, 20, 60, 0.6);
    transform: scale(1.1);
  }
}

/* MOBILE PORTAL STYLING */
.cell.portal {
  background: linear-gradient(145deg, rgba(0, 226, 255, 0.06) 70%, rgba(0, 226, 255, 0.08) 100%);
  border-color: rgba(0, 226, 255, 0.4);
  box-shadow: 
    0 0 clamp(8px, 2vw, 16px) rgba(0, 226, 255, 0.5), 
    0 0 clamp(15px, 3vw, 30px) rgba(0, 226, 255, 0.3);
  animation: portalPulse 3s ease-in-out infinite;
  z-index: 1; /* Lower than characters/enemies */
}

/* Portal glow pulse - ensure it stays below game pieces */
.cell.portal::before {
  content: '';
  position: absolute;
  top: -clamp(5px, 2vw, 10px);
  left: -clamp(5px, 2vw, 10px);
  right: -clamp(5px, 2vw, 10px);
  bottom: -clamp(5px, 2vw, 10px);
  background: radial-gradient(circle, rgba(0, 145, 255, 0.3), transparent 70%);
  border-radius: 50%;
  animation: portalPulse 2s infinite ease-in-out;
  pointer-events: none;
  z-index: -1; /* Behind everything in the portal cell */
}

@keyframes portalPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.8;
  }
}

@keyframes portalGlow {
  0%, 100% {
    box-shadow: 
      0 0 clamp(20px, 5vw, 40px) rgba(0, 145, 255, 0.7),
      0 0 clamp(30px, 7vw, 60px) rgba(0, 145, 255, 0.5);
  }
  50% {
    box-shadow: 
      0 0 clamp(30px, 7vw, 50px) rgba(0, 145, 255, 0.9),
      0 0 clamp(40px, 10vw, 80px) rgba(0, 145, 255, 0.7);
  }
}

/* MOBILE GREEN PORTAL */
.cell.portal.green {
  background: radial-gradient(ellipse at center, #80ff9b 0%, #3eff6b 45%, #00ad2f 100%);
  border-color: #00ad2f;
  box-shadow: 
    0 0 clamp(15px, 4vw, 30px) rgba(0, 255, 60, 0.6), 
    0 0 clamp(25px, 6vw, 50px) rgba(0, 173, 47, 0.4);
}

/* MOBILE PURPLE PORTAL */
.cell.portal.purple {
  background: radial-gradient(ellipse at center, #c880ff 0%, #a13eff 45%, #6200ad 100%);
  border-color: #6200ad;
  box-shadow: 
    0 0 clamp(15px, 4vw, 30px) rgba(144, 0, 255, 0.6), 
    0 0 clamp(25px, 6vw, 50px) rgba(98, 0, 173, 0.4);
}

/* MOBILE PORTAL ICONS */
.portal-icon {
  position: absolute;
  font-size: calc(var(--cell-size) * 0.4);
  color: #0091ff;
  filter: drop-shadow(0 0 clamp(8px, 2vw, 15px) rgba(255, 255, 255, 0.6));
  text-shadow: 
    0 0 clamp(10px, 3vw, 20px) #00e2ff, 
    0 0 clamp(4px, 1vw, 8px) #fff, 
    0 0 clamp(1px, 0.3vw, 2px) #0091ff;
  pointer-events: none;
  z-index: -2; /* Behind characters and enemies */
  user-select: none;
  animation: portalSwirl 4s infinite linear;
  line-height: 1;
}

@keyframes portalSwirl {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* MOBILE GREEN PORTAL ICON */
.portal.green .portal-icon {
  color: #00ad2f;
  text-shadow: 
    0 0 clamp(10px, 3vw, 20px) #00ff3c, 
    0 0 clamp(4px, 1vw, 8px) #fff, 
    0 0 clamp(1px, 0.3vw, 2px) #00ad2f;
}

/* MOBILE PURPLE PORTAL ICON */
.portal.purple .portal-icon {
  color: #6200ad;
  text-shadow: 
    0 0 clamp(10px, 3vw, 20px) #9000ff, 
    0 0 clamp(4px, 1vw, 8px) #fff, 
    0 0 clamp(1px, 0.3vw, 2px) #6200ad;
}

/* PORTAL COOLDOWN STYLING */
.cell.portal.portal-cooldown {
  background: radial-gradient(ellipse at center, #666 0%, #444 45%, #222 100%);
  border-color: #666;
  box-shadow: 
    0 0 clamp(8px, 2vw, 15px) rgba(102, 102, 102, 0.3),
    0 0 clamp(12px, 3vw, 25px) rgba(102, 102, 102, 0.2);
  animation: none;
  opacity: 0.8; 
}

.cell.portal.portal-cooldown .portal-icon {
  color: #666;
  filter: drop-shadow(0 0 clamp(3px, 1vw, 5px) rgba(102, 102, 102, 0.3));
  text-shadow: 
    0 0 clamp(5px, 2vw, 10px) #666, 
    0 0 clamp(2px, 0.5vw, 4px) #333, 
    0 0 clamp(1px, 0.2vw, 1px) #666;
  animation: none;
}

/* PORTAL COOLDOWN TEXT */
.portal-cooldown-text {
  position: absolute;
  top: clamp(1px, 0.5vw, 2px);
  left: clamp(1px, 0.5vw, 2px);
  width: clamp(14px, 4.5vw, 20px);
  height: clamp(14px, 4.5vw, 20px);
  background: linear-gradient(145deg, #1a4a6b, #0f2f4a);
  color: #ffffff;
  border-radius: clamp(3px, 1vw, 5px);
  font-size: calc(var(--cell-size) * 0.18);
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10; /* Above portal, but characters/enemies have z-index 30 */
  border: clamp(1px, 0.3vw, 2px) solid #3a7fb8;
  box-shadow: 
    0 0 clamp(6px, 1.5vw, 10px) rgba(26, 74, 107, 1),
    0 0 clamp(8px, 2vw, 14px) rgba(127, 199, 255, 0.8),
    inset 0 0 clamp(3px, 0.8vw, 5px) rgba(127, 199, 255, 0.4),
    0 2px 4px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  font-family: 'Audiowide', 'Orbitron', sans-serif;
  text-shadow: 
    0 0 clamp(3px, 0.8vw, 5px) rgba(127, 199, 255, 1),
    0 0 clamp(2px, 0.5vw, 3px) rgba(255, 255, 255, 0.9),
    1px 1px 2px rgba(0, 0, 0, 0.8);
  animation: cooldownFlicker 1.2s infinite ease-in-out;
  opacity: 0.95;
}

/* Green portal cooldown text */
.portal.green .portal-cooldown-text {
  background: linear-gradient(145deg, #1a6b2f, #0f4a1a);
  color: #ffffff;
  border-color: #3ab85a;
  box-shadow: 
    0 0 clamp(6px, 1.5vw, 10px) rgba(26, 107, 47, 1),
    0 0 clamp(8px, 2vw, 14px) rgba(127, 255, 147, 0.8),
    inset 0 0 clamp(3px, 0.8vw, 5px) rgba(127, 255, 147, 0.4),
    0 2px 4px rgba(0, 0, 0, 0.5);
  text-shadow: 
    0 0 clamp(3px, 0.8vw, 5px) rgba(127, 255, 147, 1),
    0 0 clamp(2px, 0.5vw, 3px) rgba(255, 255, 255, 0.9),
    1px 1px 2px rgba(0, 0, 0, 0.8);
}

/* Purple portal cooldown text */
.portal.purple .portal-cooldown-text {
  background: linear-gradient(145deg, #4a1a6b, #2f0f4a);
  color: #ffffff;
  border-color: #b83aa3;
  box-shadow: 
    0 0 clamp(6px, 1.5vw, 10px) rgba(74, 26, 107, 1),
    0 0 clamp(8px, 2vw, 14px) rgba(199, 127, 255, 0.8),
    inset 0 0 clamp(3px, 0.8vw, 5px) rgba(199, 127, 255, 0.4),
    0 2px 4px rgba(0, 0, 0, 0.5);
  text-shadow: 
    0 0 clamp(3px, 0.8vw, 5px) rgba(199, 127, 255, 1),
    0 0 clamp(2px, 0.5vw, 3px) rgba(255, 255, 255, 0.9),
    1px 1px 2px rgba(0, 0, 0, 0.8);
}

@keyframes cooldownFlicker {
  0%, 100% { 
    opacity: 0.95; 
    transform: scale(1);
    box-shadow: 
      0 0 clamp(6px, 1.5vw, 10px) rgba(26, 74, 107, 1),
      0 0 clamp(8px, 2vw, 14px) rgba(127, 199, 255, 0.8),
      inset 0 0 clamp(3px, 0.8vw, 5px) rgba(127, 199, 255, 0.4),
      0 2px 4px rgba(0, 0, 0, 0.5);
  }
  50% { 
    opacity: 1; 
    transform: scale(1.05);
    box-shadow: 
      0 0 clamp(8px, 2vw, 12px) rgba(26, 74, 107, 1),
      0 0 clamp(10px, 2.5vw, 16px) rgba(127, 199, 255, 1),
      inset 0 0 clamp(4px, 1vw, 6px) rgba(127, 199, 255, 0.6),
      0 3px 6px rgba(0, 0, 0, 0.6);
  }
}

/* Green portal cooldown flicker */
.portal.green .portal-cooldown-text {
  animation: greenCooldownFlicker 1.2s infinite ease-in-out;
}

@keyframes greenCooldownFlicker {
  0%, 100% { 
    opacity: 0.95; 
    transform: scale(1);
    box-shadow: 
      0 0 clamp(6px, 1.5vw, 10px) rgba(26, 107, 47, 1),
      0 0 clamp(8px, 2vw, 14px) rgba(127, 255, 147, 0.8),
      inset 0 0 clamp(3px, 0.8vw, 5px) rgba(127, 255, 147, 0.4),
      0 2px 4px rgba(0, 0, 0, 0.5);
  }
  50% { 
    opacity: 1; 
    transform: scale(1.05);
    box-shadow: 
      0 0 clamp(8px, 2vw, 12px) rgba(26, 107, 47, 1),
      0 0 clamp(10px, 2.5vw, 16px) rgba(127, 255, 147, 1),
      inset 0 0 clamp(4px, 1vw, 6px) rgba(127, 255, 147, 0.6),
      0 3px 6px rgba(0, 0, 0, 0.6);
  }
}

/* Purple portal cooldown flicker */
.portal.purple .portal-cooldown-text {
  animation: purpleCooldownFlicker 1.2s infinite ease-in-out;
}

@keyframes purpleCooldownFlicker {
  0%, 100% { 
    opacity: 0.95; 
    transform: scale(1);
    box-shadow: 
      0 0 clamp(6px, 1.5vw, 10px) rgba(74, 26, 107, 1),
      0 0 clamp(8px, 2vw, 14px) rgba(199, 127, 255, 0.8),
      inset 0 0 clamp(3px, 0.8vw, 5px) rgba(199, 127, 255, 0.4),
      0 2px 4px rgba(0, 0, 0, 0.5);
  }
  50% { 
    opacity: 1; 
    transform: scale(1.05);
    box-shadow: 
      0 0 clamp(8px, 2vw, 12px) rgba(74, 26, 107, 1),
      0 0 clamp(10px, 2.5vw, 16px) rgba(199, 127, 255, 1),
      inset 0 0 clamp(4px, 1vw, 6px) rgba(199, 127, 255, 0.6),
      0 3px 6px rgba(0, 0, 0, 0.6);
  }
}

/* MOBILE ROCK OBSTACLES */
.cell.rock {
  background: linear-gradient(145deg, #a1a1e9 20%, #727291 80%);
  border-color: #565684;
  box-shadow: 
    0 0 clamp(8px, 2vw, 15px) rgba(114, 114, 145, 0.4),
    0 0 clamp(4px, 1vw, 8px) rgba(0, 0, 0, 0.6);
  cursor: not-allowed;
}

/* MOBILE ROCK ICON */
.rock-icon {
  position: absolute;
  left: 50%; 
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: calc(var(--cell-size) * 0.4);
  color: #4f4f75;
  filter: drop-shadow(0 0 clamp(5px, 2vw, 10px) rgba(255, 255, 255, 0.3));
  text-shadow: 
    0 0 clamp(8px, 2vw, 15px) #fff, 
    0 0 clamp(3px, 1vw, 5px) #333;
  pointer-events: none;
  z-index: 2;
  user-select: none;
}

/* MOBILE TARGET AVAILABLE STYLING */
.cell.target-available {
  box-shadow:
    0 0 clamp(15px, 4vw, 30px) rgba(255, 0, 170, 0.8),
    0 0 clamp(25px, 6vw, 50px) rgba(255, 0, 170, 0.5);
  border-color: #ff00aa;
  background: linear-gradient(145deg, #2a204d 50%, #35285a 100%);
  transform: scale(1.08);
  animation: pulseTarget 1.8s infinite ease-in-out;
}

@keyframes pulseTarget {
  0%, 100% { 
    box-shadow:
      0 0 clamp(15px, 4vw, 30px) rgba(255, 0, 170, 0.8),
      0 0 clamp(25px, 6vw, 50px) rgba(255, 0, 170, 0.5);
    transform: scale(1.08);
  }
  50% { 
    box-shadow:
      0 0 clamp(20px, 5vw, 40px) rgba(255, 0, 170, 1),
      0 0 clamp(35px, 8vw, 70px) rgba(255, 0, 170, 0.7);
    transform: scale(1.1);
  }
}

/* MOBILE PRAYER TARGET */
.cell.target-available[data-prayer-target="true"] {
  box-shadow:
    0 0 clamp(15px, 4vw, 30px) rgba(255, 215, 0, 0.8),
    0 0 clamp(25px, 6vw, 50px) rgba(255, 215, 0, 0.5);
  border-color: #FFD700;
  background: linear-gradient(145deg, #3a3415 50%, #45401a 100%);
  transform: scale(1.08);
  animation: pulsePrayer 1.8s infinite ease-in-out;
}

@keyframes pulsePrayer {
  0%, 100% { 
    box-shadow:
      0 0 clamp(15px, 4vw, 30px) rgba(255, 215, 0, 0.8),
      0 0 clamp(25px, 6vw, 50px) rgba(255, 215, 0, 0.5);
    transform: scale(1.08);
  }
  50% { 
    box-shadow:
      0 0 clamp(20px, 5vw, 40px) rgba(255, 215, 0, 1),
      0 0 clamp(35px, 8vw, 70px) rgba(255, 215, 0, 0.7);
    transform: scale(1.1);
  }
}

/* MOBILE BERSERK TARGET */
.cell.berserk-target {
  box-shadow:
    0 0 clamp(15px, 4vw, 30px) rgba(139, 0, 0, 0.8),
    0 0 clamp(25px, 6vw, 50px) rgba(139, 0, 0, 0.5);
  border-color: #8B0000;
  background: linear-gradient(145deg, #3a1515 50%, #451a1a 100%);
  transform: scale(1.08);
  animation: pulseBerserk 1.8s infinite ease-in-out;
}

@keyframes pulseBerserk {
  0%, 100% { 
    box-shadow:
      0 0 clamp(15px, 4vw, 30px) rgba(139, 0, 0, 0.8),
      0 0 clamp(25px, 6vw, 50px) rgba(139, 0, 0, 0.5);
    transform: scale(1.08);
  }
  50% { 
    box-shadow:
      0 0 clamp(20px, 5vw, 40px) rgba(139, 0, 0, 1),
      0 0 clamp(35px, 8vw, 70px) rgba(139, 0, 0, 0.7);
    transform: scale(1.1);
  }
}

/* MOBILE ENEMY INDICATORS */
.enemy-plan-indicator {
  position: absolute;
  width: 85%;
  height: 85%;
  border-radius: clamp(6px, 2vw, 12px);
  background: rgba(255, 62, 107, 0.2);
  border: clamp(2px, 0.5vw, 3px) dashed rgba(255, 62, 107, 0.6);
  z-index: 5; /* Below characters/enemies but above portals */
  animation: pulsePlan 2.5s infinite ease-in-out;
  pointer-events: none;
}

.enemy-attack-indicator {
  position: absolute;
  width: 85%;
  height: 85%;
  border-radius: clamp(6px, 2vw, 12px);
  background: rgba(255, 0, 0, 0.2);
  border: clamp(2px, 0.5vw, 3px) dashed rgba(255, 0, 0, 0.7);
  z-index: 5; /* Below characters/enemies but above portals */
  animation: pulseAttack 2.5s infinite ease-in-out;
  pointer-events: none;
}

@keyframes pulsePlan {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

@keyframes pulseAttack {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

/* Persistent move indicator - when enemies move closer despite blocked paths */
.enemy-plan-indicator.persistent-move {
  background: rgba(255, 140, 0, 0.25);
  border: clamp(2px, 0.5vw, 3px) dashed rgba(255, 140, 0, 0.8);
  color: #ff8c00;
  font-size: calc(var(--cell-size) * 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pulsePersistent 2s infinite ease-in-out;
  box-shadow: 
    0 0 clamp(8px, 2vw, 15px) rgba(255, 140, 0, 0.5),
    inset 0 0 clamp(5px, 1vw, 10px) rgba(255, 140, 0, 0.2);
}

@keyframes pulsePersistent {
  0%, 100% { 
    opacity: 0.7; 
    transform: scale(1);
    box-shadow: 
      0 0 clamp(8px, 2vw, 15px) rgba(255, 140, 0, 0.5),
      inset 0 0 clamp(5px, 1vw, 10px) rgba(255, 140, 0, 0.2);
  }
  50% { 
    opacity: 1; 
    transform: scale(1.08);
    box-shadow: 
      0 0 clamp(12px, 3vw, 22px) rgba(255, 140, 0, 0.8),
      inset 0 0 clamp(8px, 2vw, 15px) rgba(255, 140, 0, 0.3);
  }
}

/* MOBILE ENEMY ORDER INDICATOR */
.enemy-order {
  position: absolute;
  top: -8px;
  right: -8px;
  width: clamp(18px, 4vw, 24px);
  height: clamp(18px, 4vw, 24px);
  background: linear-gradient(145deg, #ff3e6b, #e03357);
  color: white;
  border-radius: 50%;
  font-size: clamp(10px, 2.5vw, 14px);
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 35; /* Above enemies to be visible as an overlay */
  border: 2px solid #fff;
  box-shadow: 
    0 0 8px rgba(0, 0, 0, 0.8),
    0 0 4px rgba(255, 62, 107, 0.9);
  pointer-events: none;
  font-family: 'Audiowide', 'Orbitron', sans-serif;
  text-shadow: 0 0 3px rgba(0, 0, 0, 0.9);
  transform-origin: center center;
  animation: orderPulse 2s infinite ease-in-out;
}

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

/* MOBILE IMPACT ANIMATION */
.cell.impact {
  animation: cellImpact 0.3s ease-out;
  z-index: 5;
}

@keyframes cellImpact {
  0% { 
    transform: scale(1); 
    box-shadow: 
      0 0 clamp(10px, 3vw, 20px) rgba(0, 226, 255, 0.5);
  }
  50% { 
    transform: scale(1.15); 
    box-shadow: 
      0 0 clamp(20px, 5vw, 40px) rgba(0, 226, 255, 1),
      0 0 clamp(30px, 7vw, 60px) rgba(255, 255, 255, 0.8);
  }
  100% { 
    transform: scale(1); 
    box-shadow: 
      0 0 clamp(10px, 3vw, 20px) rgba(0, 226, 255, 0.5);
  }
}

/* MOBILE BOARD RESPONSIVENESS */
@media (max-width: 400px) {
  #game-board {
    margin: 15px auto;
    border-radius: 15px;
    border-width: 2px;
  }
  
  .cell {
    border-radius: 10px;
    border-width: 2px;
    font-size: 1.1em;
  }
  
  .portal-icon, .rock-icon {
    font-size: 2em;
  }
  
  .portal-cooldown-text {
    width: 22px;
    height: 14px;
    font-size: 0.65em;
  }
  
  .portal-cooldown-text::after {
    font-size: 0.55em;
    top: -5px;
    left: -5px;
  }
}

@media (max-width: 350px) {
  #game-board {
    margin: 10px auto;
    border-radius: 12px;
  }
  
  .cell {
    border-radius: 8px;
    font-size: 1em;
  }
  
  .portal-icon, .rock-icon {
    font-size: 1.8em;
  }
  
  .portal-cooldown-text {
    width: 20px;
    height: 12px;
    font-size: 0.6em;
  }
  
  .portal-cooldown-text::after {
    font-size: 0.5em;
    top: -4px;
    left: -4px;
  }
}

/* Anti-flicker optimizations for mobile zoom */
@media (hover:none) and (pointer:coarse) {
  /* Disable expensive board glow animation when the browser is zoomed in */
  #game-board {
    animation: none !important;
  }
}

/* Force GPU compositing to reduce flicker */
#game-board, .cell, .player, .enemy {
  backface-visibility: hidden;
  transform: translateZ(0);
  /* Provide explicit rasterization hints so the browser keeps these elements
     on a composite layer, eliminating stray flashes on some GPUs. */
  will-change: transform, opacity;
}

.enemy-push-indicator {
  position: absolute;
  width: 85%;
  height: 85%;
  border-radius: clamp(6px, 2vw, 12px);
  background: rgba(255, 215, 0, 0.25);
  border: clamp(2px, 0.5vw, 3px) dashed rgba(255, 215, 0, 0.7);
  color: #ffd700;
  font-size: calc(var(--cell-size) * 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5; /* Below characters/enemies but above portals */
  animation: pulsePush 2.5s infinite ease-in-out;
  pointer-events: none;
}

/* Offensive push - more aggressive styling */
.enemy-push-indicator.offensive-push {
  background: rgba(255, 65, 0, 0.3);
  border: clamp(2px, 0.5vw, 3px) solid rgba(255, 65, 0, 0.9);
  color: #ff4100;
  animation: pulseOffensivePush 1.8s infinite ease-in-out;
  box-shadow: 
    0 0 clamp(10px, 3vw, 20px) rgba(255, 65, 0, 0.6),
    inset 0 0 clamp(5px, 1.5vw, 10px) rgba(255, 65, 0, 0.2);
}

/* Committed push - persists regardless of target movement */
.enemy-push-indicator.committed-push {
  background: rgba(255, 20, 147, 0.35);
  border: clamp(3px, 0.7vw, 4px) double rgba(255, 20, 147, 1);
  color: #ff1493;
  animation: pulseCommittedPush 1.5s infinite ease-in-out;
  box-shadow: 
    0 0 clamp(12px, 3.5vw, 25px) rgba(255, 20, 147, 0.8),
    inset 0 0 clamp(6px, 1.8vw, 12px) rgba(255, 20, 147, 0.3),
    0 0 clamp(20px, 5vw, 40px) rgba(255, 20, 147, 0.4);
  filter: brightness(1.1) saturate(1.2);
}

@keyframes pulsePush {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

@keyframes pulseOffensivePush {
  0%, 100% { 
    opacity: 0.7; 
    transform: scale(1);
    box-shadow: 
      0 0 clamp(10px, 3vw, 20px) rgba(255, 65, 0, 0.6),
      inset 0 0 clamp(5px, 1.5vw, 10px) rgba(255, 65, 0, 0.2);
  }
  50% { 
    opacity: 1; 
    transform: scale(1.1);
    box-shadow: 
      0 0 clamp(15px, 4vw, 30px) rgba(255, 65, 0, 0.9),
      inset 0 0 clamp(8px, 2vw, 15px) rgba(255, 65, 0, 0.3);
  }
}

@keyframes pulseCommittedPush {
  0%, 100% { 
    opacity: 0.8; 
    transform: scale(1.02);
    box-shadow: 
      0 0 clamp(12px, 3.5vw, 25px) rgba(255, 20, 147, 0.8),
      inset 0 0 clamp(6px, 1.8vw, 12px) rgba(255, 20, 147, 0.3),
      0 0 clamp(20px, 5vw, 40px) rgba(255, 20, 147, 0.4);
  }
  50% { 
    opacity: 1; 
    transform: scale(1.12);
    box-shadow: 
      0 0 clamp(18px, 4.5vw, 35px) rgba(255, 20, 147, 1),
      inset 0 0 clamp(10px, 2.5vw, 18px) rgba(255, 20, 147, 0.4),
      0 0 clamp(30px, 7vw, 60px) rgba(255, 20, 147, 0.6);
  }
}

/* Layer bases */
.enemy, .player { position: relative; }
.enemy { z-index: 30; will-change: transform; }
.player { z-index: 30; will-change: transform; }
.player.jumping { transition: transform 0.2s ease-out; }

/* When browser zoom scale is high add .zoomed class via JS to disable heavy shadows */
#game-board.zoomed {
  animation: none !important;
  box-shadow: none !important;
}

#game-board.zoomed .cell {
  transition: none !important;
  box-shadow: none !important;
}

/* Disable sprite transitions/GPU hints at high zoom */
#game-board.zoomed .enemy,
#game-board.zoomed .player {
  will-change: auto !important;
  transition: none !important;
}
#game-board.zoomed .enemy-plan-indicator,
#game-board.zoomed .enemy-attack-indicator,
#game-board.zoomed .enemy-order {
  animation: none !important;
}

/* MOBILE PUSH TARGET */
.cell.target-available[data-push-target="true"] {
  box-shadow:
    0 0 clamp(15px, 4vw, 30px) rgba(255, 215, 0, 0.8),
    0 0 clamp(25px, 6vw, 50px) rgba(255, 215, 0, 0.5);
  border-color: #FFD700;
  background: linear-gradient(145deg, #3a3415 50%, #45401a 100%);
  transform: scale(1.08);
  animation: pulsePush 1.8s infinite ease-in-out;
}

@keyframes pulsePush {
  0%, 100% { 
    box-shadow:
      0 0 clamp(15px, 4vw, 30px) rgba(255, 215, 0, 0.8),
      0 0 clamp(25px, 6vw, 50px) rgba(255, 215, 0, 0.5);
    transform: scale(1.08);
  }
  50% { 
    box-shadow:
      0 0 clamp(20px, 5vw, 40px) rgba(255, 215, 0, 1),
      0 0 clamp(35px, 8vw, 70px) rgba(255, 215, 0, 0.7);
    transform: scale(1.1);
  }
}

/* PUSHABLE ROCK HIGHLIGHTING */
.cell.pushable-rock {
  box-shadow:
    0 0 clamp(15px, 4vw, 30px) rgba(255, 193, 7, 0.9),
    0 0 clamp(25px, 6vw, 50px) rgba(255, 193, 7, 0.6),
    inset 0 0 clamp(8px, 2vw, 15px) rgba(255, 193, 7, 0.3);
  border: clamp(2px, 0.5vw, 3px) dashed #FFC107;
  background: linear-gradient(145deg, #3a3415 50%, #45401a 100%);
  transform: scale(1.05);
  animation: pulsePushableRock 1.8s infinite ease-in-out;
  position: relative;
}

/* Enhanced pushable rock indicator */
.cell.pushable-rock::after {
  content: '';
  position: absolute;
  top: -clamp(2px, 1vw, 5px);
  left: -clamp(2px, 1vw, 5px);
  right: -clamp(2px, 1vw, 5px);
  bottom: -clamp(2px, 1vw, 5px);
  border: clamp(1px, 0.3vw, 2px) solid rgba(255, 193, 7, 0.4);
  border-radius: clamp(8px, 3vw, 15px);
  animation: expandPushableIndicator 1.8s infinite ease-in-out;
}

@keyframes pulsePushableRock {
  0%, 100% { 
    box-shadow:
      0 0 clamp(15px, 4vw, 30px) rgba(255, 193, 7, 0.9),
      0 0 clamp(25px, 6vw, 50px) rgba(255, 193, 7, 0.6);
    transform: scale(1.05);
  }
  50% { 
    box-shadow:
      0 0 clamp(20px, 5vw, 40px) rgba(255, 193, 7, 1),
      0 0 clamp(35px, 8vw, 70px) rgba(255, 193, 7, 0.8);
    transform: scale(1.08);
  }
}

@keyframes expandPushableIndicator {
  0%, 100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.9;
  }
}

/* Player who has already acted - faded and grayscale */
.player.acted {
  filter: grayscale(100%) brightness(0.7);
  opacity: 0.6;
}

/* Player who still has an action - subtle glow */
.player.ready {
  box-shadow: 0 0 8px rgba(25, 255, 185, 0.6);
}

/* ARCANE BLAST RANGE AND TARGETING INDICATORS */
.cell.arcane-range-indicator {
  box-shadow:
    0 0 clamp(12px, 3vw, 25px) rgba(75, 0, 130, 0.8),
    0 0 clamp(20px, 5vw, 40px) rgba(75, 0, 130, 0.5),
    inset 0 0 clamp(6px, 1.5vw, 12px) rgba(75, 0, 130, 0.3);
  border: clamp(2px, 0.5vw, 3px) dashed #4B0082;
  background: linear-gradient(145deg, #2a1a3a 50%, #3a2050 100%);
  transform: scale(1.05);
  animation: pulseArcaneRange 2s infinite ease-in-out;
  position: relative;
}

.cell.arcane-area-preview {
  box-shadow:
    0 0 clamp(15px, 4vw, 30px) rgba(255, 69, 0, 0.9),
    0 0 clamp(25px, 6vw, 50px) rgba(255, 69, 0, 0.6),
    inset 0 0 clamp(8px, 2vw, 15px) rgba(255, 69, 0, 0.3);
  border: clamp(2px, 0.5vw, 3px) solid #FF4500;
  background: linear-gradient(145deg, #3a2515 50%, #4a3020 100%);
  transform: scale(1.08);
  animation: pulseArcaneArea 1.5s infinite ease-in-out;
  position: relative;
}

/* Arcane range pulse animation */
@keyframes pulseArcaneRange {
  0%, 100% { 
    box-shadow:
      0 0 clamp(12px, 3vw, 25px) rgba(75, 0, 130, 0.8),
      0 0 clamp(20px, 5vw, 40px) rgba(75, 0, 130, 0.5);
    transform: scale(1.05);
  }
  50% { 
    box-shadow:
      0 0 clamp(18px, 4.5vw, 35px) rgba(75, 0, 130, 1),
      0 0 clamp(30px, 7vw, 60px) rgba(75, 0, 130, 0.7);
    transform: scale(1.08);
  }
}

/* Arcane area pulse animation */
@keyframes pulseArcaneArea {
  0%, 100% { 
    box-shadow:
      0 0 clamp(15px, 4vw, 30px) rgba(255, 69, 0, 0.9),
      0 0 clamp(25px, 6vw, 50px) rgba(255, 69, 0, 0.6);
    transform: scale(1.08);
  }
  50% { 
    box-shadow:
      0 0 clamp(22px, 5.5vw, 45px) rgba(255, 69, 0, 1),
      0 0 clamp(35px, 8vw, 70px) rgba(255, 69, 0, 0.8);
    transform: scale(1.12);
  }
}

/* Sinreaper Sweep Targeting */
.cell.target-available[data-sweep-direction] {
  background: radial-gradient(circle, rgba(0, 0, 0, 0.8), rgba(64, 64, 64, 0.4));
  border: 2px solid #000000;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.7);
  animation: sweepDirectionPulse 1.5s ease-in-out infinite;
  position: relative;
}

.cell.target-available[data-sweep-target="true"] {
  background: radial-gradient(circle, rgba(0, 0, 0, 0.6), rgba(64, 64, 64, 0.3));
  border: 1px solid #333333;
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.8);
  animation: sweepAreaGlow 2s ease-in-out infinite;
  position: relative;
}

.cell.sweep-area-preview {
  background: radial-gradient(circle, rgba(0, 0, 0, 0.6), rgba(64, 64, 64, 0.3));
  border: 1px solid #333333;
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.8);
  animation: sweepAreaGlow 2s ease-in-out infinite;
  position: relative;
}

.cell.sweep-direction-indicator {
  background: radial-gradient(circle, rgba(0, 0, 0, 0.8), rgba(64, 64, 64, 0.4));
  border: 2px solid #000000;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.7);
  animation: sweepDirectionPulse 1.5s ease-in-out infinite;
  position: relative;
}

@keyframes sweepDirectionPulse {
  0% { 
    background: radial-gradient(circle, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.3));
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.6);
  }
  50% { 
    background: radial-gradient(circle, rgba(0, 0, 0, 0.9), rgba(64, 64, 64, 0.5));
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
  }
  100% { 
    background: radial-gradient(circle, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.3));
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.6);
  }
}

@keyframes sweepAreaGlow {
  0% { 
    background: radial-gradient(circle, rgba(0, 0, 0, 0.5), rgba(64, 64, 64, 0.2));
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.7);
  }
  50% { 
    background: radial-gradient(circle, rgba(0, 0, 0, 0.7), rgba(64, 64, 64, 0.4));
    box-shadow: inset 0 0 25px rgba(0, 0, 0, 0.9);
  }
  100% { 
    background: radial-gradient(circle, rgba(0, 0, 0, 0.5), rgba(64, 64, 64, 0.2));
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.7);
  }
}