/*******************************/
/* global document body styles */
/*******************************/

body {
  background: black;
  color:      #CCC;
  user-select: none;
  font-family: 'Orbitron', sans-serif;
  overflow: hidden;
}

/**************************/
/* unique id-based styles */
/**************************/

#delta   { margin: 2em auto; position: relative; background: black; border: 1px solid grey; }
#booting { position: absolute; width: 6%; left: 47%; top: 47%;      } 
#canvas  { display: inline-block; width: 100%; height: 100%; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; position: absolute; }

h1         { margin: 0px; font-weight: bold;   color: white; display: block; width: 100%; text-align: center; vertical-align: center; z-index: 1; position: absolute;           }
h2         { margin: 0px; font-weight: normal; color: white; display: block; width: 100%; text-align: center; vertical-align: center; z-index: 1; position: absolute; top: 8em; }
h1#title   { font-size: 10em; }
h1#prepare { font-size: 2em;  color: #C0A0A0; }
h2#start   { font-size: 1em;  color: #A0A0FF; }

#scoreboard               { position: absolute; top: -1.5em; vertical-align: top; line-height: 1.5em; width: 100%; font-size: 1.2em; color: white; }
#scoreboard .lives        { visibility: hidden; }
#scoreboard .lives .label { padding: 0 0.5em; color: #808080; }
#scoreboard .lives  img   { margin-right: 0.5em; }
#scoreboard .score        { position: absolute; right: 0.5em; }
#scoreboard .score .label { padding: 0 0.5em; color: #808080; }
#scoreboard .score .value { display: inline-block; width: 4em; }

#scoreboard .lives.zero img.one   { display: none; }
#scoreboard .lives.zero img.two   { display: none; }
#scoreboard .lives.zero img.three { display: none; }
#scoreboard .lives.one  img.two   { display: none; }
#scoreboard .lives.one  img.three { display: none; }
#scoreboard .lives.two  img.three { display: none; }

#instructions { position: absolute; bottom: -1.5em; text-align: right; line-height: 1em; width: 100%; color: #A0A0A0; }

#sound     { width: 24px; height: 24px; background: url(../images/mute.png); display: inline-block; cursor: pointer; position: absolute; left: -2.5em; }
#sound.on  { background-position:   0   0; }
#sound.off { background-position: -24px 0; }

#delta.preparing #scoreboard .lives   { visibility: visible; }
#delta.playing   #scoreboard .lives   { visibility: visible; }

h2#start {
  -webkit-animation: pulsate 1s ease-out infinite;
     -moz-animation: pulsate 1s ease-out infinite;
       -o-animation: pulsate 1s ease-out infinite;
          animation: pulsate 1s ease-out infinite;
}

@-webkit-keyframes pulsate { 0% { opacity: 0.0; } 50% { opacity: 1.0; } 100% { opacity: 0.0; } }
   @-moz-keyframes pulsate { 0% { opacity: 0.0; } 50% { opacity: 1.0; } 100% { opacity: 0.0; } }
     @-o-keyframes pulsate { 0% { opacity: 0.0; } 50% { opacity: 1.0; } 100% { opacity: 0.0; } }
        @keyframes pulsate { 0% { opacity: 0.0; } 50% { opacity: 1.0; } 100% { opacity: 0.0; } }

/*****************************/
/* @media query based layout */
/*****************************/

@media screen and (min-width:    0px) and (min-height:    0px) { #delta { width:  512px; height: 384px; line-height: 384px; font-size:  7pt; } }
@media screen and (min-width:  840px) and (min-height:  550px) { #delta { width:  640px; height: 480px; line-height: 480px; font-size:  9pt; } }
@media screen and (min-width:  968px) and (min-height:  646px) { #delta { width:  768px; height: 576px; line-height: 576px; font-size: 11pt; } }
@media screen and (min-width: 1096px) and (min-height:  742px) { #delta { width:  896px; height: 672px; line-height: 672px; font-size: 13pt; } }
@media screen and (min-width: 1224px) and (min-height:  838px) { #delta { width: 1024px; height: 768px; line-height: 768px; font-size: 15pt; } }
@media screen and (min-width: 1480px) and (min-height: 1030px) { #delta { width: 1280px; height: 960px; line-height: 960px; font-size: 17pt; } }