reduce glow opacity
reduce glow opacity

file:b/README.md (new)
  # 2048
  A small clone of [1024](https://play.google.com/store/apps/details?id=com.veewo.a1024), based on [Saming's 2048](saming.fr/p/2048/) (also a clone).
 
  Made just for fun.
 
  [![Screenshot](http://pictures.gabrielecirulli.com/2048-20140305-170629.png)](http://pictures.gabrielecirulli.com/2048-20140305-170629.png)
 
file:a/index.html -> file:b/index.html
<!DOCTYPE html> <!DOCTYPE html>
<html> <html>
<head> <head>
<meta charset="utf-8"> <meta charset="utf-8">
<title>2048</title> <title>2048</title>
   
<link href="style/style.css" rel="stylesheet" type="text/css"> <link href="style/main.css" rel="stylesheet" type="text/css">
</head> </head>
<body> <body>
<div class="container"> <div class="container">
<h1>2048</h1> <h1>2048</h1>
   
<div class="game-container"> <div class="game-container">
<div class="grid-container"> <div class="grid-container">
<div class="grid-row"> <div class="grid-row">
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
</div> </div>
<div class="grid-row"> <div class="grid-row">
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
</div> </div>
<div class="grid-row"> <div class="grid-row">
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
</div> </div>
<div class="grid-row"> <div class="grid-row">
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
<div class="grid-cell"></div> <div class="grid-cell"></div>
</div> </div>
</div> </div>
   
<div class="tile-container"> <div class="tile-container">
<div class="tile tile-2 tile-position-1-1"> <div class="tile tile-2 tile-position-1-1">
2 2
</div> </div>
<div class="tile tile-4 tile-position-2-3"> <div class="tile tile-4 tile-position-2-1">
4 4
  </div>
  <div class="tile tile-8 tile-position-3-1">
  8
  </div>
  <div class="tile tile-16 tile-position-4-1">
  16
  </div>
  <div class="tile tile-32 tile-position-1-2">
  32
  </div>
  <div class="tile tile-64 tile-position-2-2">
  64
  </div>
  <div class="tile tile-128 tile-position-3-2">
  128
  </div>
  <div class="tile tile-256 tile-position-4-2">
  256
  </div>
  <div class="tile tile-512 tile-position-1-3">
  512
  </div>
  <div class="tile tile-1024 tile-position-2-3">
  1024
  </div>
  <div class="tile tile-2048 tile-position-3-3">
  2048
</div> </div>
</div> </div>
</div> </div>
</div> </div>
</body> </body>
</html> </html>
   
  // Exponent
  // From: https://github.com/Team-Sass/Sassy-math/blob/master/sass/math.scss#L36
 
  @function exponent($base, $exponent) {
  // reset value
  $value: $base;
  // positive intergers get multiplied
  @if $exponent > 1 {
  @for $i from 2 through $exponent {
  $value: $value * $base; } }
  // negitive intergers get divided. A number divided by itself is 1
  @if $exponent < 1 {
  @for $i from 0 through -$exponent {
  $value: $value / $base; } }
  // return the last value written
  @return $value;
  }
 
  @function pow($base, $exponent) {
  @return exponent($base, $exponent);
  }
 
  // Transition mixins
  @mixin transition($args...) {
  -webkit-transition: $args;
  -moz-transition: $args;
  }
 
  @mixin transition-property($args...) {
  -webkit-transition-property: $args;
  -moz-transition-property: $args;
  }
 
file:b/style/main.css (new)
  @import url(fonts/clear-sans.css);
  html, body {
  margin: 0;
  padding: 0;
  background: #faf8ef;
  color: #776e65;
  font-family: "Clear Sans", "Helvetica Neue", Arial, sans-serif; }
 
  body {
  margin: 80px 0; }
 
  h1 {
  font-size: 80px;
  font-weight: bold;
  margin: 0; }
 
  .container {
  width: 500px;
  margin: 0 auto; }
 
  .game-container {
  margin-top: 50px;
  position: relative;
  padding: 15px;
  cursor: default;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  background: #bbada0;
  border-radius: 6px;
  width: 500px;
  height: 500px;
  box-sizing: border-box; }
 
  .grid-container {
  position: absolute;
  z-index: 1; }
 
  .grid-row {
  margin-bottom: 15px; }
  .grid-row:last-child {
  margin-bottom: 0; }
  .grid-row:after {
  content: "";
  display: block;
  clear: both; }
 
  .grid-cell {
  width: 106.25px;
  height: 106.25px;
  margin-right: 15px;
  float: left;
  border-radius: 3px;
  background: rgba(238, 228, 218, 0.35); }
  .grid-cell:last-child {
  margin-right: 0; }
 
  .tile-container {
  position: absolute;
  z-index: 2; }
 
  .tile {
  background: red;
  width: 106.25px;
  height: 106.25px;
  border-radius: 3px;
  background: #eee4da;
  text-align: center;
  line-height: 116.25px;
  font-size: 55px;
  font-weight: bold;
  -webkit-transition: 200ms ease;
  -moz-transition: 200ms ease;
  -webkit-transition-property: top, left;
  -moz-transition-property: top, left; }
  .tile.tile-position-1-1 {
  position: absolute;
  left: 0px;
  top: 0px; }
  .tile.tile-position-1-2 {
  position: absolute;
  left: 0px;
  top: 121.25px; }
  .tile.tile-position-1-3 {
  position: absolute;
  left: 0px;
  top: 242.5px; }
  .tile.tile-position-1-4 {
  position: absolute;
  left: 0px;
  top: 363.75px; }
  .tile.tile-position-2-1 {
  position: absolute;
  left: 121.25px;
  top: 0px; }
  .tile.tile-position-2-2 {
  position: absolute;
  left: 121.25px;
  top: 121.25px; }
  .tile.tile-position-2-3 {
  position: absolute;
  left: 121.25px;
  top: 242.5px; }
  .tile.tile-position-2-4 {
  position: absolute;
  left: 121.25px;
  top: 363.75px; }
  .tile.tile-position-3-1 {
  position: absolute;
  left: 242.5px;
  top: 0px; }
  .tile.tile-position-3-2 {
  position: absolute;
  left: 242.5px;
  top: 121.25px; }
  .tile.tile-position-3-3 {
  position: absolute;
  left: 242.5px;
  top: 242.5px; }
  .tile.tile-position-3-4 {
  position: absolute;
  left: 242.5px;
  top: 363.75px; }
  .tile.tile-position-4-1 {
  position: absolute;
  left: 363.75px;
  top: 0px; }
  .tile.tile-position-4-2 {
  position: absolute;
  left: 363.75px;
  top: 121.25px; }
  .tile.tile-position-4-3 {
  position: absolute;
  left: 363.75px;
  top: 242.5px; }
  .tile.tile-position-4-4 {
  position: absolute;
  left: 363.75px;
  top: 363.75px; }
  .tile.tile-2 {
  background: #eee4da;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0); }
  .tile.tile-4 {
  background: #ede0c8;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0); }
  .tile.tile-8 {
  background: #edddb7;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0); }
  .tile.tile-16 {
  background: #edd9a6;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0); }
  .tile.tile-32 {
  background: #edd695;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.07937), inset 0 0 0 1px rgba(255, 255, 255, 0.04762); }
  .tile.tile-64 {
  background: #edd384;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.15873), inset 0 0 0 1px rgba(255, 255, 255, 0.09524); }
  .tile.tile-128 {
  background: #edcf72;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.2381), inset 0 0 0 1px rgba(255, 255, 255, 0.14286);
  font-size: 45px; }
  .tile.tile-256 {
  background: #edcc61;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.31746), inset 0 0 0 1px rgba(255, 255, 255, 0.19048);
  color: #ede9e5;
  font-size: 45px; }
  .tile.tile-512 {
  background: #edc850;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.39683), inset 0 0 0 1px rgba(255, 255, 255, 0.2381);
  color: #f9f6f2;
  font-size: 45px; }
  .tile.tile-1024 {
  background: #edc53f;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.47619), inset 0 0 0 1px rgba(255, 255, 255, 0.28571);
  color: #f9f6f2;
  font-size: 35px; }
  .tile.tile-2048 {
  background: #edc22e;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.55556), inset 0 0 0 1px rgba(255, 255, 255, 0.33333);
  color: #f9f6f2;
  font-size: 35px; }
 
file:b/style/main.scss (new)
  @import "helpers";
  @import "fonts/clear-sans.css";
 
  $field-width: 500px;
  $grid-spacing: 15px;
  $grid-row-cells: 4;
  $tile-size: ($field-width - $grid-spacing * ($grid-row-cells + 1)) / $grid-row-cells;
  $tile-border-radius: 3px;
 
  $text-color: #776E65;
  $gold-text-color: #f9f6f2;
 
  $tile-color: #eee4da;
  $tile-gold-color: #edc22e;
  $tile-gold-glow-color: lighten($tile-gold-color, 15%);
 
  html, body {
  margin: 0;
  padding: 0;
 
  background: #faf8ef;
  color: $text-color;
  font-family: "Clear Sans", "Helvetica Neue", Arial, sans-serif;
  }
 
  body {
  margin: 80px 0;
  }
 
  h1 {
  font-size: 80px;
  font-weight: bold;
  margin: 0;
  }
 
  .container {
  width: $field-width;
  margin: 0 auto;
  }
 
  .game-container {
  margin-top: 50px;
  position: relative;
  padding: $grid-spacing;
 
  cursor: default;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
 
  background: #bbada0;
  border-radius: $tile-border-radius * 2;
  width: $field-width;
  height: $field-width;
  box-sizing: border-box;
  }
 
  .grid-container {
  position: absolute;
  z-index: 1;
  }
 
  .grid-row {
  margin-bottom: $grid-spacing;
 
  &:last-child {
  margin-bottom: 0;
  }
 
  &:after {
  content: "";
  display: block;
  clear: both;
  }
  }
 
  .grid-cell {
  width: $tile-size;
  height: $tile-size;
  margin-right: $grid-spacing;
  float: left;
 
  border-radius: $tile-border-radius;
 
  background: rgba($tile-color, .35);
 
  &:last-child {
  margin-right: 0;
  }
  }
 
  .tile-container {
  position: absolute;
  z-index: 2;
  }
 
  .tile {
  background: red;
  width: $tile-size;
  height: $tile-size;
  border-radius: $tile-border-radius;
 
  background: $tile-color;
  text-align: center;
  line-height: $tile-size + 10px;
  font-size: 55px;
  font-weight: bold;
 
  @include transition(200ms ease);
  @include transition-property(top, left);
 
  @for $x from 1 through $grid-row-cells {
  @for $y from 1 through $grid-row-cells {
  &.tile-position-#{$x}-#{$y} {
  position: absolute;
  left: ($tile-size + $grid-spacing) * ($x - 1);
  top: ($tile-size + $grid-spacing) * ($y - 1);
  }
  }
  }
 
  $base: 2;
  $exponent: 1;
  $limit: 11;
 
  @while $exponent <= $limit {
  $power: pow($base, $exponent);
 
  $gold-percent: ($exponent - 1) / ($limit - 1) * 100;
 
  $gold-text-percent: min($exponent + 2, $limit) / ($limit) * 100;
 
  $glow-opacity: max($exponent - 4, 0) / ($limit - 4);
 
  &.tile-#{$power} {
  background: mix($tile-gold-color, $tile-color, $gold-percent);
 
  box-shadow: 0 0 30px 10px rgba($tile-gold-glow-color, $glow-opacity / 1.8),
  inset 0 0 0 1px rgba(white, $glow-opacity / 3);
 
  @if $exponent >= 8 {
  color: mix($gold-text-color, $text-color, $gold-text-percent);
  }
 
  @if $power >= 100 and $power < 1000 {
  font-size: 45px;
  } @else if $power >= 1000 {
  font-size: 35px;
  }
  }
 
  $exponent: $exponent + 1;
  }
  }
 
 
 
file:a/style/style.css (deleted)
@import url(fonts/clear-sans.css);  
html, body {  
margin: 0;  
padding: 0;  
background: #faf8ef;  
color: #776E65;  
font-family: "Clear Sans", "Helvetica Neue", Arial, sans-serif; }  
 
body {  
margin: 80px 0; }  
 
h1 {  
font-size: 80px;  
font-weight: bold;  
margin: 0; }  
 
.container {  
width: 500px;  
margin: 0 auto; }  
 
.game-container {  
margin-top: 50px;  
position: relative;  
padding: 15px;  
background: #bbada0;  
border-radius: 6px;  
width: 500px;  
height: 500px;  
box-sizing: border-box; }  
 
.grid-container {  
position: absolute;  
z-index: 1; }  
 
.grid-row {  
margin-bottom: 15px; }  
.grid-row:last-child {  
margin-bottom: 0; }  
.grid-row:after {  
content: "";  
display: block;  
clear: both; }  
 
.grid-cell {  
width: 106.25px;  
height: 106.25px;  
margin-right: 15px;  
float: left;  
border-radius: 3px;  
background: rgba(238, 228, 218, 0.35); }  
.grid-cell:last-child {  
margin-right: 0; }  
 
.tile-container {  
position: absolute;  
z-index: 2; }  
 
.tile {  
background: red;  
width: 106.25px;  
height: 106.25px;  
border-radius: 3px;  
background: #eee4da;  
text-align: center;  
line-height: 116.25px;  
font-size: 60px;  
font-weight: bold; }  
.tile.tile-position-1-1 {  
position: absolute;  
left: 0px;  
top: 0px; }  
.tile.tile-position-1-2 {  
position: absolute;  
left: 0px;  
top: 121.25px; }  
.tile.tile-position-1-3 {  
position: absolute;  
left: 0px;  
top: 242.5px; }  
.tile.tile-position-1-4 {  
position: absolute;  
left: 0px;  
top: 363.75px; }  
.tile.tile-position-2-1 {  
position: absolute;  
left: 121.25px;  
top: 0px; }  
.tile.tile-position-2-2 {  
position: absolute;  
left: 121.25px;  
top: 121.25px; }  
.tile.tile-position-2-3 {  
position: absolute;  
left: 121.25px;  
top: 242.5px; }  
.tile.tile-position-2-4 {  
position: absolute;  
left: 121.25px;  
top: 363.75px; }  
.tile.tile-position-3-1 {  
position: absolute;  
left: 242.5px;  
top: 0px; }  
.tile.tile-position-3-2 {  
position: absolute;  
left: 242.5px;  
top: 121.25px; }  
.tile.tile-position-3-3 {  
position: absolute;  
left: 242.5px;  
top: 242.5px; }  
.tile.tile-position-3-4 {  
position: absolute;  
left: 242.5px;  
top: 363.75px; }  
.tile.tile-position-4-1 {  
position: absolute;  
left: 363.75px;  
top: 0px; }  
.tile.tile-position-4-2 {  
position: absolute;  
left: 363.75px;  
top: 121.25px; }  
.tile.tile-position-4-3 {  
position: absolute;  
left: 363.75px;  
top: 242.5px; }  
.tile.tile-position-4-4 {  
position: absolute;  
left: 363.75px;  
top: 363.75px; }  
 
file:a/style/style.scss (deleted)
@import "fonts/clear-sans.css";  
 
$field-width: 500px;  
$grid-spacing: 15px;  
$grid-row-cells: 4;  
$tile-size: ($field-width - $grid-spacing * ($grid-row-cells + 1)) / $grid-row-cells;  
$tile-border-radius: 3px;  
 
$tile-color: #eee4da;  
 
html, body {  
margin: 0;  
padding: 0;  
 
background: #faf8ef;  
color: #776E65;  
font-family: "Clear Sans", "Helvetica Neue", Arial, sans-serif;  
}  
 
body {  
margin: 80px 0;  
}  
 
h1 {  
font-size: 80px;  
font-weight: bold;  
margin: 0;  
}  
 
.container {  
width: $field-width;  
margin: 0 auto;  
}  
 
.game-container {  
margin-top: 50px;  
position: relative;  
padding: $grid-spacing;  
 
background: #bbada0;  
border-radius: $tile-border-radius * 2;  
width: $field-width;  
height: $field-width;  
box-sizing: border-box;  
}  
 
.grid-container {  
position: absolute;  
z-index: 1;  
}  
 
.grid-row {  
margin-bottom: $grid-spacing;  
 
&:last-child {  
margin-bottom: 0;  
}  
 
&:after {  
content: "";  
display: block;  
clear: both;  
}  
}  
 
.grid-cell {  
width: $tile-size;  
height: $tile-size;  
margin-right: $grid-spacing;  
float: left;  
 
border-radius: $tile-border-radius;  
 
background: rgba($tile-color, .35);  
 
&:last-child {  
margin-right: 0;  
}  
}  
 
.tile-container {  
position: absolute;  
z-index: 2;  
}  
 
.tile {  
background: red;  
width: $tile-size;  
height: $tile-size;  
border-radius: $tile-border-radius;  
 
background: $tile-color;  
text-align: center;  
line-height: $tile-size + 10px;  
font-size: 60px;  
font-weight: bold;  
 
@for $x from 1 through $grid-row-cells {  
@for $y from 1 through $grid-row-cells {  
&.tile-position-#{$x}-#{$y} {  
position: absolute;  
left: ($tile-size + $grid-spacing) * ($x - 1);  
top: ($tile-size + $grid-spacing) * ($y - 1);  
}  
}  
}  
}  
 
 
 
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