:root {
  --main-color1: #00B300;
  --main-text-color1: #FFF;
  --main-color2: #00AFFF;
  --main-color3: #FF2972;
  --main-color1-hover: #007C00;
  --main-color2-hover: #007BC6;
  --main-color3-hover: #BF0043;
  --control-color: #979696;
  --copyright-color: #000;
  --page-color: #F4FFFA;
  --button-color: #DDD;
  --button-color-hover: #CCC;
  --button-text: #000;

  --card-color: #FFF;
  --card-bordercolor: #CFCFCF;
  --card-bordercolor-hover: #777;

  --card-textcolor: #000;

  --correct-border-color: #12E100;
  --correct-background-color: #C7FDC2;
  --typo-border-color: #FFC61A;
  --typo-background-color: #FFFED6;
  --wrong-border-color: #FF1A1A;
  --wrong-background-color: #FFD6D6;

  --even-background-color: #ECECEC;
  --odd-background-color: #EEE;;

  --font-basic: Arial, sans-serif;

}


body {
  background-color: var(--page-color);
  font-family: var(--font-basic);
}

h1 {
  font-size: 2rem;
}


#mem-flipcard-slidr {
}

/* page blocks ***************/
#block-cardslider {
  width: 100%;
  max-width:600px;
  margin: auto;
  margin-top:1.5rem;
}


#block-controls {
  margin: 1.5rem 7%;
  margin-bottom:0;
  color: var(--control-color);
}
#block-controls:after {
  content: "";
  display: table;
  clear: both;
}

#block-left, #block-right {
  float: left;
  width:60%;
}
#block-right {
  text-align: right;
  width:40%;
}

#block-right button {
  margin-left: 0.1rem;
  padding: 0.3rem 0.5rem;
  padding:0;
  background-color: #FFF;
  border-radius: 3px;
  box-shadow: rgba(50, 50, 93, 0.25) 0px 2px 5px -1px, rgba(0, 0, 0, 0.3) 0px 1px 3px -1px;
}
#block-right button svg {
  width:1.5rem;
  height:1.5rem;
  margin-top: 0.2rem;
  margin-left: 0.2rem;
}

#block-right button.on .ison {
  display:inline-block;
}
#block-right button.on .isoff {
  display:none;
}
#block-right button.off .isoff {
  display:inline-block;
}
#block-right button.off .ison {
  display:none;
}
#block-right button.on .isactive {
  display:none;
}
#block-right button.off .isactive {
  display:none;
}

#block-right button.isactive .isoff {
  display:none;
}
#block-right button.isactive .ison {
  display:none;
}
#block-right button.isactive .isactive {
  display:inline-block;
}

#btn-play svg.isoff {
  margin-left: 0.1rem;
  margin-right: 0.1rem;
}
#btn-help svg {
  width:1.1rem !important;
  margin-left: 0.3rem !important;
  margin-right: 0.3rem !important;
}
#btn-print svg {
  width: 1.2rem !important;
  margin-left: 0.4rem !important;
  margin-right: 0.35rem !important;
  margin-top: 0.3rem !important;
}
.btn-ico-blick0 {
  color:#bfbfbf;
}


/* FlipCards ********************/
.cardcontainer {
  position: relative;
  width: 100%;
  height: 300px;
  background: none;
}



.card {
    position: absolute;
    /*top: 50%;
    //left: 50%;*/
    height: 400px;
    width: 300px;
    /*transform: translate(-50%, -50%);*/
}

.card, .card-nobackside {
  position: relative;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  perspective: 700px;
  transition: .3s;
  cursor:pointer;
}
.card .front, .card .back, .card-nobackside .front {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 15px;
  backface-visibility: hidden;
  overflow: hidden;
  background: var(--card-color);
  color: var(--card-textcolor);
  box-shadow: rgba(99, 99, 99, 0.2) 0px 2px 8px 0px;
}

.cardcontent, .cardcontent-smaller, .cardcontent-smallest {
  position: absolute;
  width:85%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.5rem;
  overflow-wrap: break-word;
  overflow: hidden;
  text-align: center;
}
.cardcontent-smaller {
  font-size: 2rem;
}
.cardcontent-smallest {
  font-size: 1.5rem;
}


.cardcontent:first-line {
}
.front {
  transform: rotateX(0deg);
  transition: .3s;
}

.back {
  transform: rotateX(180deg);
  transition: .3s;
}

.flip-card .front {
  transform: rotateX(-180deg);
}
.flip-card .back {
  transform: rotateX(0deg);
}

/* Slidr *******************/
@media (min-width: 400px) {
  .cardslider {
    margin-left: 30px;
    margin-right: 30px;
  }

  .slidr-control.left {
    left: -30px !important;
  }

  .slidr-control.right {
    right: -30px !important;
  }
}
.slidr-control.down, .slidr-control.up {
  display: none;
}


/*progress ***********/
#progressbar {
  display: inline-block;
  height: 0.5rem;
  width: 40%;
  border: 1px solid var(--control-color);

}
#progressbar-finished {
  display: block;
  height: 100%;
  width: 100%;
  background-color: var(--control-color);;
}

/* buttons **********/
button {
  border-radius: 0.2rem;
  cursor: pointer;
  background-color: var(--button-color);
  color: var(--button-text);
  padding: 0.6rem 2rem;
  font-size: 1rem;
  border: none;
}
button.small {
  border-radius: 0.2rem;
  cursor: pointer;
  background-color: var(--button-color);
  color: var(--button-text);
  padding: 0.3rem 1rem;
  font-size: 0.8rem;
  border: none;
}
button:hover {
  background-color: var(--button-color-hover);
}
#btn-again, .error-again {
  background-color: var(--main-color2);
  color:#FFF;
}
#btn-again:hover, .error-again:hover {
  background-color: var(--main-color2-hover);
  color:#FFF;
}
#btn-close, .button-main {
  background-color: var(--main-color1);
  color:#FFF;
}
#btn-close:hover, .button-main:hover {
  background-color: var(--main-color1-hover);
  color:#FFF;
}

/* other ************/
#copyright {
  color: var(--copyright-color);
  text-align: center;
}
#copyright a {
  color: var(--copyright-color);
}


/* loading and start overlay *****/
#container {
    width: 100%;
    margin: 0 auto;
}
#overlay {
/*
  opacity:1;
  filter: alpha(opacity = 1);
*/
  position:absolute;
  top:0; bottom:0; left:0; right:0;
  display:block;
  z-index:2000;
  background: var(--page-color);
  display: flex;
  /* align-items: center; */
  justify-content: center;
}
#overlay_top {
  position:absolute;
  top:0; bottom:0; left:0; right:0;
  display:block;
  z-index:2000;
  background: var(--page-color);
}
body {
  position: relative;
}
#start {
  display: none;
  width: 50%;
  max-width: 370px;
  min-width: 280px;
}
#overlay_top #start {
  margin:auto;
  margin-top:2rem;
}
#start-buton, #start-close {
  text-align: center;
}
#btn-start {
  background-color: var(--main-color2);
  color:#FFF;
  font-size:
}
#btn-start:hover {
  background-color: var(--main-color2-hover);
  color:#FFF;
}
#start-close {
  margin-top:2em;
}
#btn-close {
  background-color: var(--button-color);
  color: var(--button-text);
}
#btn-close:hover {
  background-color: var(--button-color-hover);
  color: var(--button-text);
}
#start-setting {
  text-align: center;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}
#start-help {
  text-align: left;
  margin-top: 1rem;
}
#start-help kbd {
  font-size: 1rem;
  font-family: var(--font-basic);
}
#start-help .row {
  margin-bottom: 0.3rem;
}

#start.center #start-setting {
  text-align: center;
  margin-top: 1.5rem;
}
#start.center #start-help {
  text-align: center;
  margin-bottom: 1rem;
}

/* Match ********************/
#match-board {
  display: grid;
  grid-column-gap: 5px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));

}

.match-tile {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50px;
  overflow: hidden;
  text-align:center;

  background: var(--card-color);
  border: 1px solid var(--card-bordercolor);
  border-radius: 2px;
  padding:0.5em;
  margin-bottom: 5px;

  cursor: pointer;

  opacity: 1;
}

@media (min-width: 500px) {
  .match-tile {
    height: 30px;
   }
}


.match-tile:hover {
  box-shadow: rgba(99, 99, 99, 0.5) 0px 2px 8px 0px;
}
.match-tile-selected {
  border-color: #00AFFF;
  background-color: #D3F1FF;
  box-shadow: rgba(99, 99, 99, 0.5) 0px 2px 8px 0px;
}
.match-tile-correct {
  border-color: var(--correct-border-color);
  background-color: var(--correct-background-color);
  box-shadow: rgba(99, 99, 99, 0.5) 0px 2px 8px 0px;
}
.match-tile-wrong {
  border-color: var(--wrong-border-color);
  background-color: var(--wrong-background-color);
  box-shadow: rgba(99, 99, 99, 0.5) 0px 2px 8px 0px;

  animation: shake 0.5s;
  animation-iteration-count: infinite;
}

#match-stopwatch {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--card-textcolor);
}

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

#match-result h1 {
  text-align: center;
}
#match-result h2 {
  text-align: center;
}
#match-result-leaderboard .loading,
#board  .loading
 {
  text-align: center;
  margin-top: 5rem;
  margin-bottom: 5rem;
}
#match-result-leaderboard .loading img {
  width: 1.5rem;
  height: 1.5rem;
  position: relative;
  top: 0.35rem;
}
#board .loading img {
  width: 1em;
  height: 1em;
  position: relative;
  top: 0.35rem;
}
#match-result-againclose {
  text-align: center;
}
#match-result-againclose button {
  margin: 1rem;
}

/* RightChoice *********************/
#choice-instruction {
  margin: 1.5rem 0.2rem 0rem 0.2rem;
  font-size: 0.8rem;
}

#choice-options {
  margin-top: 0.5rem;
}

.choice-column {
  min-width: 200px;
}
.choice-option {
  margin: 0.2rem;
  padding: 0.7rem;
  background-color: var(--card-color);
  border: 2px solid var(--card-bordercolor);
  border-radius: 0.5rem;
  text-align: left;
  cursor: pointer;
}
@media (hover: hover) {
  .choice-option:hover {
    border-color: var(--card-bordercolor-hover);
  }
}


.choice-option-correct {
  border-color: var(--correct-border-color) !important;
  background-color: var(--correct-background-color) !important;
}
.choice-option-typo {
  border-color: var(--typo-border-color) !important;
  background-color: var(--typo-background-color) !important;
}
.choice-option-wrong {
  border-color: var(--wrong-border-color) !important;
  background-color: var(--wrong-background-color) !important;
}
.choice-option-wrong-anim {
  animation: shake 0.5s;
  animation-iteration-count: infinite;
}


/* Flash review ************************/
#flashreview-terms {
  overflow: scroll;
}
.flashreview-terms-row {
  margin-bottom: 0.5rem;
  border-radius: 0.5rem;
  padding:0.5rem;
  background-color: var(--odd-background-color);
}
.flashreview-terms-row:hover {
  background-color: var(--wrong-background-color);
}
.flashreview-terms-column {
  margin:0.1rem;
  padding:1rem;
  border:1px solid var(--card-bordercolor);
  border-radius: 0.5rem;
  background-color: var(--card-color);
}
.flashreview-terms-column:hover {
  border-color: var(--card-bordercolor-hover);
  cursor: pointer;
}

.flashreview-terms-column-active {
  border-color: var(--correct-border-color);
  background-color: var(--correct-background-color);
}
.flashreview-terms-column svg {
  width:1rem;
  height: 1rem;
  padding-top:0.1rem;
  padding-right: 0.7rem;
  float:left;
}

#flashreview-bottombuttons {
  text-align: center;
}
#flashreview-bottombuttons button {
  margin:1rem;
}
#flashreview-bottombuttons #block-left {
  width:90%;
}
#flashreview-bottombuttons #block-right {
  width:10%;
  min-width: 60px;
}
/* Write It ***************************/
#wiriteit-instruction, .wi-answer-correct-text {
  margin-top:1rem;
  margin-bottom: 0.5rem;
}
#wi-youranswer #answer, #wi-wronganswer-correct-correct, #wi-wronganswer-correcttoo-correct, #wi-noanswer-correct-correct, #wi-typoanswer-correct-correct, #wi-typoanswer-correcttoo-correct {
  font-size: 1.5rem;
  padding: 0.3rem 0.5rem;
  width: calc(100% - 1rem);
  border: 1px solid var(--card-bordercolor);
  border-radius: 0.4rem;
  background-color: var(--card-color);
  color: var(--card-textcolor);
}
.wi-answer-buttons {
  margin-top: 0.4rem;
  text-align: right;
}
.wi-answer-buttons button {
  margin-left: 0.5rem;
  font-size: 1rem;
  padding: 0.3rem 1rem;
}
.wi-answer-buttons button svg {
  position: relative;
  top: 0.15rem;
}
#answer-play, #answer-donotknow, #wronganswer-knowit, #typoanswer-mistake {
  font-size: 0.85rem !important;
}
.wi-answer {
  margin-top: 2rem;
  margin-bottom: 1rem;
}
.wi-answer-correct {
  margin-top: 1rem;
}
.wi-correct {
  border-color: var(--correct-border-color) !important;
  background-color: var(--correct-background-color) !important;
}
.wi-answer-resulttext {
  text-align: center;
  font-weight: bold;
}
.wi-answer-corrected {
  animation: shake 0.5s;
  animation-iteration-count: infinite;
}
#wi-correctanswer-resulttext {
  font-weight: bold;
}

/* general ******************/
.visible {
  visibility: visible !important;
}

.row {
  display: block;
  clear:both;
}
.row:after {
  content: "";
  display: table;
  clear: both;
}

.column {
  float: left;
  width: 50%;
}
.column-3 {
  float: left;
  width: 30%;
}
.column-4 {
  float: left;
  width: 40%;
}
.column-6 {
  float: left;
  width: 60%;
}
.column-7 {
  float: left;
  width: 70%;
}
@media screen and (max-width: 600px) {
  .column, .column-3, .column-4, .column-6, .column-7 {
    width: 100%;
  }
}

.center {
  text-align: center;
}
.alignright {
  text-align: right;
}
.alignleft {
  text-align: left;
}
.bold {
  font-weight:bolder;
}
.margintop1 {
  margin-top: 1rem;
}

.nowrap {
  white-space: nowrap;
}

table {
  border-collapse: collapse;
  /*box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);*/
  border:1px solid var(--control-color);

}
table td {
  padding: 0.4rem 2rem;
}
table.centered {
  margin:0 auto;
}
table.lined tr {
  /*background-color: var(--card-color);
  border-bottom:1px solid var(--page-color);*/
  border-bottom:1px solid var(--control-color);
}
table tr.active-row {
    font-weight: bold;
}

.window-header {
  position:sticky;
  top:0;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.window-title {
  margin-left:1rem;
}
.window-close {
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.1rem 0.6rem;
  border-radius: 5px;
  color: var(--main-text-color1);
  background-color: var(--main-color1);
  font-weight: 400;
  line-height: 1.7;
  display: inline-block
}