.teach-option {
    border: 1px solid black;
    background-color: transparent;
}

.nos {
    -webkit-touch-callout: none; /* iOS Safari */
      -webkit-user-select: none; /* Safari */
       -khtml-user-select: none; /* Konqueror HTML */
         -moz-user-select: none; /* Old versions of Firefox */
          -ms-user-select: none; /* Internet Explorer/Edge */
              user-select: none; /* Non-prefixed version, currently
                                    supported by Chrome, Edge, Opera and Firefox */
  }

.tts {
    cursor: pointer;
}

.video-error {
  padding: 12px;
  border: 1px solid #ddd;
  background: #fafafa;
  font-weight: 600;
  text-align: center;
}

.strict-page-shell {
    width: 100%;
    max-width: 1000px;
    min-height: 900px;
    margin: 0 auto;
}

body.strict-game-task-mode .page {
    display: block;
    max-width: none;
    width: 100%;
    margin: 0;
}

body.strict-game-task-mode #content {
    margin: 0 !important;
    max-width: none !important;
    min-height: 0 !important;
    width: 100% !important;
    background: white;
}

body.strict-game-task-mode .strict-page-shell {
    max-width: none;
    min-height: 0;
    margin: 0;
}

body.strict-game-task-mode .problemArea {
    width: 100%;
}

body.strict-game-task-mode .strict-game-shell {
    margin-left: calc(50% - 50vw);
    width: 100vw;
}

.strict-game-shell {
    position: relative;
    display: flex;
    flex-direction: column;
    background: white;
}

.strict-game-header-row {
    flex: 0 0 auto;
    display: flex;
    justify-content: center;
    padding: 0 20px;
}

.strict-game-header-inner {
    width: 100%;
    border-bottom: 1px solid gainsboro;
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 20px;
}

.strict-game-back {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 5px;
    color: dodgerblue;
    text-decoration: none;
    cursor: pointer;
}

.strict-game-title {
    flex: 2;
    min-width: 0;
    text-align: center;
    font-weight: 600;
    font-size: 1.1em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.strict-game-points {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 5px;
}

.strict-game-points .material-icons {
    font-size: 1.25em;
}

.strict-game-frame-wrap {
    flex: 0 0 auto;
    display: flex;
    min-height: 750px;
    margin-top: 20px;
    width: 100vw;
}

#strict-game-frame {
    flex: 1;
    width: 100%;
    height: 100%;
    border: 0;
    background: white;
}

#strict-top-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: whitesmoke;
    border-top: 1px solid gainsboro;
    z-index: 1000;
}

#strict-top-bar .strict-top-bar-inner {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    align-items: stretch;
    flex-wrap: wrap;
    gap: 40px;
}

.strict-progress-panel {
    flex: 1 1 260px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: min(260px, 100%);
}

.strict-progress-row {
    display: flex;
    justify-content: space-between;
    gap: 5px;
    min-width: 0;
    white-space: nowrap;
}

#strict-progress-bar {
    flex: 0 0 15px;
    display: flex;
    gap: 2px;
    height: 15px;
    overflow: hidden;
}

.strict-progress-chunk {
    flex: 1;
    height: 15px;
    background: gainsboro;
    position: relative;
    overflow: hidden;
}

.strict-progress-chunk:first-child {
    border-radius: 10px 0 0 10px;
}

.strict-progress-chunk:last-child {
    border-radius: 0 10px 10px 0;
}

.strict-progress-chunk.filled {
    background: dodgerblue;
}

.strict-progress-chunk.chunk-fill-animate::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: dodgerblue;
    animation: chunkSweepFill 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes chunkSweepFill {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.strict-header-actions {
    display: flex;
    gap: 10px;
}

.strict-header-tool {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    color: dodgerblue;
    text-decoration: none;
    cursor: pointer;
}

.strict-header-tool-icon {
    flex: 1;
    width: 30px;
    background: white;
    border: 2px solid dodgerblue;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.strict-header-tool-icon .material-icons {
    font-size: 1.25em;
}

.strict-header-tool b {
    margin-bottom:-2px;
    font-size: 0.5em;
    line-height: 100%;
}

.strict-header-tool.strict-header-tool-off {
    opacity: 0.45;
}

#strict-top-bar #returnHome {
    cursor: pointer;
    display: flex;
    gap: 5px;
}

#strict-top-bar #returnHome .material-icons {
    font-size: 1.25em;
}

@media (max-width: 700px) {

    .strict-progress-panel {
        flex-basis: 100%;
    }
}

#asmContainer {
    z-index: 100;
    background: rgb(238, 238, 238);
    position: sticky;
    bottom: 0;
    left: 0;
    right: 0;
    margin-top: 1em;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-top: 1px solid lightgray;
    text-align: center;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    width: 100%;
}

#asmNav {
    display: flex;
    flex-direction: row;
    gap: 20px;
    height: 30px;
    justify-content: center;
    align-items: center;
    font-size: 1em;
    border-bottom: 1px solid black;
    width: 100%;
}

.asmNavElement {
    display: flex;
    align-items: center;
    gap: 10px;
}

#asmMain {
    display: flex;
    height: 100%;
    width: 100%;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 15px;
}

.asmNumDivider {
    width:1px;
    background:rgba(0, 0, 0, 0.25)
}

#asmDirections {
    color: white;
    font-weight: bold;
    flex: 1;
    height: 65px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.asmQuestion {
    font-size: 3vw;
    white-space: nowrap;
    padding-bottom: 10px;
}

@media screen and (min-width: 1065px) {
    .asmQuestion {
        font-size: 2em;
        white-space: nowrap;
        padding-bottom: 10px;
    }
}

.asmMainContainer {
    display: flex;
    gap: 15px;
    margin: 0px;
}

.asmItemList.asm-select-list {
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
    gap: 36px;
    white-space: nowrap;
}

.asm-select-option {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.asm-answer-row {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.inputPlaceholder {
    font-size: 0.75em;
    height: 0px;
}

.nextStepItem:hover, .nextProblemItem:hover, .reviewItem:hover {
    --hover-color: #0c95b3;
    border-color: var(--hover-color);
    color: var(--hover-color);
}

.selectedChoiceItem {
    --hover-color: #f0932b;
    border-color: var(--hover-color);
    color: var(--hover-color);
}

.focusedInputItem {
    --hover-color: #f0932b;
    border-color: var(--hover-color) !important;
}

.correct {
    --correct-color: #00a651;
    background: var(--correct-color) !important;
    border-color: var(--correct-color) !important;
    color: white !important;
    accent-color: var(--correct-color);
}

.selectItem.incorrect {
    accent-color: var(--incorrect-color);
}

.incorrect {
    --incorrect-color: #ee5253;
    background: var(--incorrect-color) !important;
    border-color: var(--incorrect-color) !important;
    color: white !important;
    animation-duration: 0.2s;
    animation-iteration-count: 3;
    animation-name: bounce;
    animation-timing-function: linear;
}

@keyframes bounce {
    0% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(8px);
    }

    100% {
        transform: translateX(0);
    }
}

.nonChoiceItem {
    display: flex;
    justify-content: center;
    align-items: center;
}

#asmMainButton:hover,
.asm-primary-action:hover,
.nextStepItem:hover,
.choiceItem:hover,
.nonChoiceItem:hover,
.correct:hover,
.incorrect:hover,
.nextProblemItem:hover,
.reviewItem:hover,
.asmItem:hover {
    opacity: 0.85;
}

#asmContainer.strict-asm-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    width: 100%;
    margin-top: 0;
    background: whitesmoke;
    box-shadow: 0 0 5px 1px gainsboro;
    border-top: 0;
    align-items: stretch;
}

#asmContainer.strict-asm-container #teacher-step-nav {
    padding: 8px 20px 0;
}

#asmContainer.strict-asm-container #asmMain {
    height: auto;
    padding: 20px;
    gap: 20px;
    justify-content: center;
    align-items: center;
}

#asmContainer.strict-asm-container .asmQuestion {
    max-width: min(1000px, 100%);
    padding-bottom: 0;
    font-size: 2em;
    line-height: 1.2;
    white-space: normal;
    text-align: center;
}

#asmContainer.strict-asm-container .asm-answer-row {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

#asmContainer.strict-asm-container .asmMainContainer {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 0;
}

#asmContainer.strict-asm-container .asmItemList {
    max-width: 100%;
}

#asmContainer.strict-asm-container .asmItemList.asm-select-list {
    gap: 36px;
}

#asmContainer.strict-asm-container .asmItem {
    min-width: 150px;
}

#asmContainer.strict-asm-container #asmMainButton,
#asmContainer.strict-asm-container .asm-primary-action {
    transition-duration: 0.2s;
}

#asmContainer.strict-asm-container #asmMainButton:empty {
    display: none !important;
}

#asmContainer.strict-asm-container #asmMainButton,
#asmContainer.strict-asm-container .asmBoldButton,
#asmContainer.strict-asm-container .choiceItem,
#asmContainer.strict-asm-container .inputItem,
#asmContainer.strict-asm-container .asm-select-option,
#asmContainer.strict-asm-container .selectItem,
#asmContainer.strict-asm-container #showAnswerButton:not(:disabled),
#asmContainer.strict-asm-container #teacher-step-nav button:not(:disabled),
#asmContainer.strict-asm-container .asm-primary-action {
    cursor: pointer !important;
}

#asmContainer.strict-asm-container .nonChoiceItem:not([style*="not-allowed"]) {
    cursor: pointer !important;
}

#asmContainer.strict-asm-container .choiceItem {
    border: 1px solid gainsboro;
    color: black;
}

#asmContainer.strict-asm-container .inputItem {
    font: inherit;
    text-align: center;
    border: 1px solid gainsboro;
    color: black;
}

#asmContainer.strict-asm-container .inputPlaceholder {
    margin: 4px 0 0;
}

#asmContainer.strict-asm-container .selectedChoiceItem {
    border-color: #f0932b;
    color: #f0932b;
}

#asmContainer.strict-asm-container #asmBottom {
    background: white;
    padding: 2px;
    gap: 2px;
    font-size: 2em;
    max-width: 1200px;
    width: 100%;
    margin: 0px auto;
}

#asmContainer.strict-asm-container .asmNumDivider {
    display: none;
}

#asmContainer.strict-asm-container .asmNumPadButton {
    flex:1;
    background:dodgerblue;
    color:white;
    padding:10px;
    gap:1in;
    display:flex;
    justify-content:center;
    align-items:center;
    cursor: pointer;
}

#asmContainer.strict-asm-container #asmDirections {
    height: auto;
    min-height: 54px;
    padding: 10px;
    background: dodgerblue;
    color: white;
}

#strict-video-player {
    background-color: none !important;
}

@keyframes firework {
    0% {
        transform: translate(var(--x), var(--initialY));
        width: var(--initialSize);
        opacity: 1;
    }

    50% {
        width: 0.5vmin;
        opacity: 1;
    }

    100% {
        width: var(--finalSize);
        opacity: 0;
    }
}

.firework {
    --initialSize: 0.6vmin;
    --finalSize: 65vmin;
    --particleSize: 0.6vmin;
    --color1: #0abde3;;
    --color2: #f0932b;
    --y: -20vmin;
    --x: -50%;
    --initialY: 0vmin;
    content: "";
    animation: firework 1s;
    position: absolute;
    bottom: 0%;
    left: 50%;
    transform: translate(-50%, var(--y));
    width: var(--initialSize);
    aspect-ratio: 1;
    background:

        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 50% 0%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 100% 50%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 50% 100%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 0% 50%,

        /* bottom right */
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 80% 90%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 95% 90%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 90% 70%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 100% 60%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 55% 80%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 70% 77%,

        /* bottom left */
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 22% 90%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 45% 90%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 33% 70%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 10% 60%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 31% 80%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 28% 77%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 13% 72%,

        /* top left */
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 80% 10%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 95% 14%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 90% 23%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 100% 43%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 85% 27%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 77% 37%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 60% 7%,

        /* top right */
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 22% 14%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 45% 20%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 33% 34%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 10% 29%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 31% 37%,
        radial-gradient(circle, var(--color1) var(--particleSize), #0000 0) 28% 7%,
        radial-gradient(circle, var(--color2) var(--particleSize), #0000 0) 13% 42%;
    background-size: var(--initialSize) var(--initialSize);
    background-repeat: no-repeat;
}

.firework::before {
    --x: -50%;
    --y: -50%;
    --initialY: -50%;
    /*   transform: translate(-20vmin, -2vmin) rotate(40deg) scale(1.3) rotateY(40deg); */
    transform: translate(-50%, -50%) rotate(40deg) scale(1.3) rotateY(40deg);
    /*   animation: fireworkPseudo 2s infinite; */
}

.firework::after {
    --x: -50%;
    --y: -50%;
    --initialY: -50%;
    /*   transform: translate(44vmin, -50%) rotate(170deg) scale(1.15) rotateY(-30deg); */
    transform: translate(-50%, -50%) rotate(170deg) scale(1.15) rotateY(-30deg);
    /*   animation: fireworkPseudo 2s infinite; */
}