* {
  -webkit-tap-highlight-color: transparent;
  box-sizing: border-box;
}

body {
  font-family: 'Space Grotesk', sans-serif;
  background: #F0F0E8;
  color: #1A1A1A;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 噪点纹理背景 */
.noise-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-color: #F0F0E8;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(255, 230, 0, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(255, 107, 157, 0.06) 0%, transparent 50%);
}

.noise-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
}

/* 新粗野主义核心样式 */
.brutal-card {
  background: #FFFFFF;
  border: 3px solid #1A1A1A;
  box-shadow: 6px 6px 0px 0px #1A1A1A;
  transition: all 0.15s ease;
}

.brutal-btn {
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 3px solid #1A1A1A;
  box-shadow: 4px 4px 0px 0px #1A1A1A;
  transition: all 0.1s ease;
  cursor: pointer;
  user-select: none;
}

.brutal-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0px 0px #1A1A1A;
}

.brutal-btn:active {
  transform: translate(4px, 4px);
  box-shadow: 0px 0px 0px 0px #1A1A1A;
}

.brutal-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: 4px 4px 0px 0px #1A1A1A !important;
}

/* 游戏网格 */
.game-grid {
  background: #1A1A1A;
  border: 4px solid #1A1A1A;
  box-shadow: 8px 8px 0px 0px #1A1A1A;
  position: relative;
}

.grid-cell {
  background: #E0E0D8;
  border: 2px solid #1A1A1A;
  aspect-ratio: 1;
}

#grid-background {
  height: 100%;
  width: 100%;
}

/* 方块样式 */
.tile {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Archivo Black', sans-serif;
  border: 3px solid #1A1A1A;
  transition: all 0.12s ease-in-out;
  font-weight: 900;
}

.tile-2 { background: #FFFFFF; color: #1A1A1A; box-shadow: 3px 3px 0px 0px #1A1A1A; }
.tile-4 { background: #FFE600; color: #1A1A1A; box-shadow: 3px 3px 0px 0px #1A1A1A; }
.tile-8 { background: #FF8C42; color: #1A1A1A; box-shadow: 3px 3px 0px 0px #1A1A1A; }
.tile-16 { background: #FF4757; color: #FFFFFF; box-shadow: 3px 3px 0px 0px #1A1A1A; }
.tile-32 { background: #FF6B9D; color: #1A1A1A; box-shadow: 3px 3px 0px 0px #1A1A1A; }
.tile-64 { background: #9B5DE5; color: #FFFFFF; box-shadow: 3px 3px 0px 0px #1A1A1A; }
.tile-128 { background: #4D9DE0; color: #1A1A1A; box-shadow: 3px 3px 0px 0px #1A1A1A; font-size: 0.8em; }
.tile-256 { background: #7FD858; color: #1A1A1A; box-shadow: 3px 3px 0px 0px #1A1A1A; font-size: 0.8em; }
.tile-512 { background: #00BBF9; color: #1A1A1A; box-shadow: 3px 3px 0px 0px #1A1A1A; font-size: 0.8em; }
.tile-1024 { background: #1A1A1A; color: #FFE600; box-shadow: 3px 3px 0px 0px #FFE600; font-size: 0.65em; }
.tile-2048 {
  background: #FFE600; color: #1A1A1A; border: 4px solid #1A1A1A;
  box-shadow: 3px 3px 0px 0px #1A1A1A, 6px 6px 0px 0px #FF4757, 9px 9px 0px 0px #1A1A1A;
  font-size: 0.65em;
  animation: tile2048Pulse 1.5s ease-in-out infinite;
}

@keyframes tile2048Pulse {
  0%, 100% { box-shadow: 3px 3px 0px 0px #1A1A1A, 6px 6px 0px 0px #FF4757, 9px 9px 0px 0px #1A1A1A; }
  50% { box-shadow: 3px 3px 0px 0px #1A1A1A, 6px 6px 0px 0px #9B5DE5, 9px 9px 0px 0px #1A1A1A; }
}

.tile-super {
  background: #1A1A1A; color: #FFE600; border: 4px solid #FFE600;
  box-shadow: 3px 3px 0px 0px #FFE600, 6px 6px 0px 0px #FF4757, 9px 9px 0px 0px #9B5DE5;
  font-size: 0.55em;
  animation: tileSuperShake 0.5s ease-in-out infinite;
}

@keyframes tileSuperShake {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(-1px, 1px) rotate(-1deg); }
  75% { transform: translate(1px, -1px) rotate(1deg); }
}

/* 特殊方块 - 炸弹 */
.tile-bomb {
  background: #1A1A1A;
  color: #FF4757;
  border: 3px solid #FF4757;
  box-shadow: 3px 3px 0px 0px #FF4757;
  animation: bombPulse 0.8s ease-in-out infinite;
}

@keyframes bombPulse {
  0%, 100% { box-shadow: 3px 3px 0px 0px #FF4757; }
  50% { box-shadow: 3px 3px 0px 0px #FF4757, 0 0 20px rgba(255, 71, 87, 0.6); }
}

/* 特殊方块 - 倍数 */
.tile-multiplier {
  background: #9B5DE5;
  color: #FFE600;
  border: 3px dashed #FFE600;
  box-shadow: 3px 3px 0px 0px #1A1A1A;
  animation: multiplierSpin 3s linear infinite;
}

@keyframes multiplierSpin {
  0% { border-style: dashed; }
  50% { border-style: dotted; }
  100% { border-style: dashed; }
}

/* 特殊方块 - 彩虹 */
.tile-rainbow {
  background: conic-gradient(from 0deg, #FF4757, #FF8C42, #FFE600, #7FD858, #00BBF9, #9B5DE5, #FF4757);
  color: #FFFFFF;
  border: 3px solid #1A1A1A;
  box-shadow: 3px 3px 0px 0px #1A1A1A;
  animation: rainbowRotate 2s linear infinite;
  text-shadow: 2px 2px 0px #1A1A1A;
}

@keyframes rainbowRotate {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(360deg); }
}

/* 特殊方块 - 冰冻 */
.tile-freeze {
  background: #00BBF9;
  color: #FFFFFF;
  border: 3px solid #FFFFFF;
  box-shadow: 3px 3px 0px 0px #1A1A1A, inset 0 0 10px rgba(255,255,255,0.5);
  animation: freezePulse 1.5s ease-in-out infinite;
}

@keyframes freezePulse {
  0%, 100% { box-shadow: 3px 3px 0px 0px #1A1A1A; }
  50% { box-shadow: 3px 3px 0px 0px #1A1A1A, 0 0 15px rgba(0, 187, 249, 0.7); }
}

/* 特殊方块 - 消行 */
.tile-rowclear {
  background: #FF8C42;
  color: #FFFFFF;
  border: 3px solid #FFFFFF;
  box-shadow: 3px 3px 0px 0px #1A1A1A;
  animation: rowclearPulse 1s ease-in-out infinite;
}

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

/* 特殊方块 - 消列 */
.tile-colclear {
  background: #9B5DE5;
  color: #FFFFFF;
  border: 3px solid #FFFFFF;
  box-shadow: 3px 3px 0px 0px #1A1A1A;
  animation: colclearPulse 1s ease-in-out infinite;
}

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

/* 特殊方块 - 合并 */
.tile-mergeall {
  background: #7FD858;
  color: #1A1A1A;
  border: 3px solid #1A1A1A;
  box-shadow: 3px 3px 0px 0px #1A1A1A;
  animation: mergeallSpin 2s linear infinite;
}

@keyframes mergeallSpin {
  0% { border-radius: 0; }
  50% { border-radius: 50%; }
  100% { border-radius: 0; }
}

/* 冰冻格子效果 */
.grid-cell.frozen {
  background: #00BBF9 !important;
  border-color: #FFFFFF !important;
  animation: frozenShimmer 2s ease-in-out infinite;
}

@keyframes frozenShimmer {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* 方块动画 */
.tile-new {
  animation: tileAppear 0.3s ease-out;
}

@keyframes tileAppear {
  0% { scale: 0; opacity: 0; }
  100% { scale: 1; opacity: 1; }
}

.tile-merged {
  animation: tileMerge 0.3s ease-out;
  z-index: 10;
}

@keyframes tileMerge {
  0% { scale: 1; rotate: 0deg; }
  50% { scale: 1.3; rotate: 5deg; }
  100% { scale: 1; rotate: 0deg; }
}

/* 爆炸效果 */
.explosion {
  position: absolute;
  pointer-events: none;
  z-index: 100;
}

.explosion-particle {
  position: absolute;
  width: 8px;
  height: 8px;
  background: #FF4757;
  border: 2px solid #1A1A1A;
  animation: particleFly 0.6s ease-out forwards;
}

@keyframes particleFly {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  100% { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

/* 分数弹出 */
.score-popup {
  position: absolute;
  font-family: 'Archivo Black', sans-serif;
  font-size: 1.8rem;
  color: #FF4757;
  text-shadow: 2px 2px 0px #1A1A1A;
  pointer-events: none;
  animation: scorePopup 0.8s ease-out forwards;
  z-index: 100;
}

@keyframes scorePopup {
  0% { transform: translateY(0) scale(0.5); opacity: 0; }
  20% { transform: translateY(-15px) scale(1.3); opacity: 1; }
  100% { transform: translateY(-60px) scale(1); opacity: 0; }
}

/* 连击显示 */
.combo-display {
  position: absolute;
  top: -20px;
  right: -10px;
  font-family: 'Archivo Black', sans-serif;
  font-size: 2rem;
  color: #FFE600;
  text-shadow: 3px 3px 0px #1A1A1A, -1px -1px 0px #FF4757;
  pointer-events: none;
  z-index: 200;
  animation: comboShow 1s ease-out forwards;
}

@keyframes comboShow {
  0% { transform: scale(0) rotate(-20deg); opacity: 0; }
  30% { transform: scale(1.5) rotate(10deg); opacity: 1; }
  70% { transform: scale(1) rotate(0deg); opacity: 1; }
  100% { transform: scale(1.2) rotate(-5deg); opacity: 0; }
}

/* 屏幕震动 */
.screen-shake {
  animation: screenShake 0.4s ease-in-out;
}

@keyframes screenShake {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-5px, -3px); }
  20% { transform: translate(5px, 3px); }
  30% { transform: translate(-4px, 2px); }
  40% { transform: translate(4px, -2px); }
  50% { transform: translate(-3px, -3px); }
  60% { transform: translate(3px, 3px); }
  70% { transform: translate(-2px, 1px); }
  80% { transform: translate(2px, -1px); }
  90% { transform: translate(-1px, 0px); }
}

/* 游戏遮罩 */
.game-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(26, 26, 26, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

/* 方向键 */
.dpad-btn {
  background: #FFFFFF;
  border: 3px solid #1A1A1A;
  box-shadow: 3px 3px 0px 0px #1A1A1A;
  transition: all 0.1s ease;
  cursor: pointer;
  user-select: none;
}

.dpad-btn:hover { background: #FFE600; }
.dpad-btn:active { transform: translate(3px, 3px); box-shadow: 0px 0px 0px 0px #1A1A1A; }

/* 成就通知 */
.achievement-toast {
  position: fixed;
  top: 20px;
  right: -400px;
  background: #FFE600;
  border: 3px solid #1A1A1A;
  box-shadow: 6px 6px 0px 0px #1A1A1A;
  padding: 12px 20px;
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  z-index: 1000;
  transition: right 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  max-width: 350px;
}

.achievement-toast.show {
  right: 20px;
}

/* 标签样式 */
.brutal-tag {
  display: inline-block;
  padding: 2px 10px;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 2px solid #1A1A1A;
  background: #FFE600;
  color: #1A1A1A;
}

/* 进度条 */
.progress-bar {
  height: 20px;
  background: #E0E0D8;
  border: 3px solid #1A1A1A;
  position: relative;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: repeating-linear-gradient(
    45deg,
    #FFE600,
    #FFE600 10px,
    #FF8C42 10px,
    #FF8C42 20px
  );
  transition: width 0.3s ease;
}

/* 闪烁动画 */
.blink {
  animation: blink 1s steps(2) infinite;
}

@keyframes blink {
  0% { opacity: 1; }
  50% { opacity: 0; }
}

/* 装饰元素 */
.decoration {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

/* 模式切换按钮 */
.mode-btn {
  padding: 8px 12px;
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  border: 3px solid #1A1A1A;
  cursor: pointer;
  transition: all 0.1s ease;
}

.mode-btn.active {
  background: #1A1A1A;
  color: #FFE600;
}

.mode-btn:not(.active) {
  background: #FFFFFF;
  color: #1A1A1A;
}

/* 响应式 */
@media (max-width: 640px) {
  .brutal-title { font-size: 3rem; }
  
  /* 移动端优化 */
  .brutal-card {
    box-shadow: 4px 4px 0px 0px #1A1A1A;
  }
  
  .brutal-btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  .dpad-btn {
    min-height: 48px;
    min-width: 48px;
  }
  
  .mode-btn {
    min-height: 40px;
    padding: 6px 10px;
    font-size: 0.7rem;
  }
  
  /* 防止移动端缩放 */
  input, textarea, select {
    font-size: 16px;
  }
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
  .brutal-btn:hover {
    transform: none;
    box-shadow: 4px 4px 0px 0px #1A1A1A;
  }
  
  .brutal-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px 0px #1A1A1A;
  }
  
  .dpad-btn:hover {
    background: #FFFFFF;
  }
  
  .dpad-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0px 0px #1A1A1A;
    background: #FFE600;
  }
}

/* 防止文字选择 */
.no-select {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

/* 防止iOS弹性滚动 */
html, body {
  overscroll-behavior: none;
}

/* 游戏区域触摸优化 */
#game-board {
  touch-action: none;
  -webkit-touch-callout: none;
}