:root {
  --panel: #071019;
  --muted: #9aa3b2;
  --text: #e6eef6;
  --background1: #172D50;
  --background2: #480A71;
  --accent1: #3c78d8;
  --accent2: #9900ff;
  --accent5: #0c3b83;
  --accent6: #241b77;
  --glass: rgba(0, 0, 0, 0.03);
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, 'Courier New', monospace;
  --radius: 12px;
  --card-padding: 1vw;
  --header-height: 70px;
  --header-height-responsive: 7vh;
  --sidebar-width-collapsed: 70px;
  --sidebar-width-collapsed-resonsive: clamp(10px, 10vw, 70px);
  --sidebar-width-expanded: 200px;
  --gradient-primary: linear-gradient(45deg, var(--accent1), var(--accent2));
  --gradient-secondary: linear-gradient(45deg, var(--background1), var(--background2));
  --gradient-tertiary: linear-gradient(45deg, var(--accent5), var(--accent6));
  --gradient-nrb: linear-gradient(45deg, var(--accent1), var(--accent2), var(--accent1));
}

* {
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

html,
body {
  background: linear-gradient(45deg, var(--background1), var(--background2));
  color: var(--text);
}

.intro-screen {
  position: fixed;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: inherit;
  z-index: 50;
  animation: introFadeIn 1s ease forwards;
}

.intro-content {
  text-align: center;
  transform: translateY(0);
}

.intro-logo1,
.intro-logo2,
.intro-logo3 {
  width: 336px;
  height: 336px;
  object-fit: contain;
  margin-bottom: 1rem;
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translate(-50%, -80%);
}

.intro-logo2 {
  animation: rotateRight 3s ease-out forwards;
}

.intro-logo3 {
  animation: rotateLeft 3s ease-out forwards;
}

@keyframes rotateRight {
  from {
    transform: translate(-50%, -80%) rotate(60deg);
  }

  to {
    transform: translate(-50%, -80%) rotate(0deg);
  }
}

@keyframes rotateLeft {
  from {
    transform: translate(-50%, -80%) rotate(-60deg);
  }

  to {
    transform: translate(-50%, -80%) rotate(0deg);
  }
}

.intro-body {
  position: absolute;
  transform: translate(-50%, 30%);
}

.intro-screen h1 {
  font-size: 3rem;
  letter-spacing: 2px;
  margin-bottom: 0.2rem;
  width: max-content;
}

.text-container {
  position: relative;
  display: inline-block;
}

.nrb-outline {
  font-size: 3em;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 2px var(--gradient-secondary);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1;
  pointer-events: none;
}

.nrb-gradient {
  display: inline-block;
  overflow: hidden;
  width: 0;
  white-space: nowrap;
  animation: reveal-gradient 2s cubic-bezier(.7, .2, .3, 1) forwards;
}

.nrb-gradient-fill {
  font-size: 3em;
  font-weight: 700;
  font-family: inherit;
  background: var(--gradient-nrb);
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: gradient-move 2s linear infinite;
}

@keyframes reveal-gradient {
  from {
    width: 0;
  }

  to {
    width: 100%;
  }
}

@keyframes gradient-move {
  to {
    background-position: 200% center;
  }
}

@keyframes introFadeIn {
  from {
    opacity: 0;
    transform: scale(.98);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

.fade-out {
  animation: fadeOut 0.9s ease forwards;
}

@keyframes fadeOut {
  to {
    opacity: 0;
    transform: scale(.95);
  }
}

/* Header */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  z-index: 40;
  transition: opacity .6s ease;
  border-width: 2px;
  border-image: var(--gradient-primary) 3;
}

.logo-area {
  display: flex;
  gap: 12px;
  align-items: center;
}

.logo {
  width: 50px;
  height: 50px;
}

.logo:hover {
  filter: brightness(0) invert(1);
  display: inline-block;
  animation: spin 2.5s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.main-header h1 {
  font-size: 1.1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.logo-letter {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  filter: brightness(0) saturate(100%);
}


.top-nav button {
  margin: 0 0.7rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
  font-size: var(--header-height)-70px;
  border: none;
  font-weight: 500;
}

.top-nav button:hover {
  background: white;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-toggle-responsive {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.8rem;
  cursor: pointer;
  right: 5px;
  z-index: 1200;
}

.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  height: calc(100% - var(--header-height));
  width: clamp(70px, 15vw, 200px);
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: width 0.3s ease, background 0.3s ease;
  overflow: hidden;
  z-index: 90;
}

.sidebar.collapsed {
  width: clamp(50px, 10vw, 70px);
}

.sidebar.collapsed .menu-btn span {
  opacity: 0;
  width: 0;
  pointer-events: none;
}

.toggle-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 15px;
  transition: transform 0.3s ease;
}

.toggle-btn:hover {
  transform: scale(1.1);
}

.brand .title {
  font-weight: 700;
}

.subtitle {
  font-size: 12px;
  color: var(--muted);
}

.menu {
  padding-top: 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 5px;
  padding-bottom: 10px;
}

.menu-btn {
  background: var(--gradient-primary);
  border: none;
  padding: 8px 10px;
  border-radius: 25px;
  width: 90%;
  height: clamp(40px, 5vw, 55px);
  font-size: clamp(12px, 1vw, 16px);
  color: rgb(255, 255, 255);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.5vw, 14px);
  text-align: center;
  transition: all 0.2s ease;
  margin: 5px;
}

.menu-btn .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(15px, 2.5vw, 32px);
  height: clamp(15px, 2.5vw, 32px);
  transition: transform 0.2s ease;
}

.menu-btn .icon img {
  width: clamp(11px, 2.3vw, 24px);
  height: clamp(11px, 2.3vw, 24px);
  object-fit: contain;
  filter: brightness(0) invert(1);
  transition: filter 0.3s ease, transform 0.2s ease;
}

.menu-btn:hover .icon img {
  transform: scale(1.1);
  filter: brightness(1.3);
}

.sidebar.collapsed .menu-btn {
  justify-content: center;
  width: 50px;
  height: 50px;
}

.sidebar.collapsed .menu-btn span {
  display: none;
}

.sidebar.collapsed .menu-btn .icon {
  margin: 0;
}

.menu-btn:hover {
  box-shadow: 0 3px 12px 0 #0000003d;
  transform: scale(1.1);
  color: black;
}

.menu-btn.active {
  box-shadow: 0 0 12px var(--accent2);
  transform: translateY(-1px);
}

.home-content {
  border-radius: 20px;
  border-width: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 30px;
  border-style: solid;
  border-image: var(--gradient-primary) 5;
  width: 60vw;
  height: clamp(200px, 30vh, 400px);
}

.home-panel {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - var(--header-height));
  max-height: 100vh;
  text-align: center;
}

#panel-home {
  overflow: hidden;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.home-title {
  font-size: 42px;
}

#app {
  overflow: hidden;
  padding: 2px;
  padding-top: calc(var(--header-height) + 2px);
  min-height: calc(100vh - var(--header-height));
  margin-left: var(--sidebar-width-expanded);
  transition: margin-left 0.3s ease, opacity 0.4s ease;
}

.sidebar.collapsed~#app {
  margin-left: var(--sidebar-width-collapsed);
}

.panel {
  overflow: hidden;
  margin-bottom: 20px;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.hidden {
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  display: none;
}

.visible-panel {
  overflow: hidden;
  opacity: 1;
  display: block;
}

.card {
  background: var(--gradient-tertiary);
  padding: var(--card-padding);
  border-radius: var(--radius);
  border: 2px solid var(--glass);
  box-shadow: 0 8px 30px var(--glass);
  margin-bottom: 12px;
}

.card h3 {
  margin-bottom: 6px;
}

.muted {
  color: var(--muted);
  font-size: 15px;
}

.quick-links {
  justify-content: center;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.front-btn {
  margin: 5px;
  background: var(--gradient-primary);
  color: white;
  font-size: 25px;
  padding: 10px 16px;
  border-radius: 30px;
  border: none;
  cursor: pointer;
}

.front-btn:hover {
  box-shadow: 0 3px 12px 0 #0000003d;
  transform: scale(1.05);
  color: black;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 10px;
  flex-wrap: wrap;
}

label {
  display: block;
  font-size: 13px;
}

.title {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

input[type="number"],
select,
input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--glass);
  background: #07141c;
  color: var(--text);
  font-family: var(--mono);
  margin-top: 2px;
  line-height:1;
}

input[type="color"] {
  width: 100%;
  padding: 2px;
  border-radius: 25px;
  border: 1px solid var(--glass);
  background: #000000;
  color: var(--text);
  font-family: var(--mono);
}

.btn {
  position: relative;
  background: var(--gradient-secondary);
  color: #fff;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  overflow: hidden;
  z-index: 0;
  transition: transform 0.1s ease, box-shadow 0.2s ease;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: var(--gradient-primary);
  mask: linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
}

.btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 12px var(--glass);
}

.btn:active {
  transform: translateY(1px);
}

.output {
  margin-top: 12px;
  padding: 12px;
  border-radius: 10px;
  background: linear-gradient(180deg, #061018, #041016);
  border: 1px dashed var(--glass);
  min-height: 48px;
  white-space: pre-wrap;
}

.mono {
  font-family: var(--mono);
  font-size: 13px;
}

/* Math Section */

.shapes-2d-hidden {
  display: none;
}

.shapes-2d-visible {
  display: block;
}


/*Chemistry Section*/
.periodic-table {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: clamp(2px, 0.5vw, 8px);
  width: 100% !important;
}

.ptColumn {
  display: flex;
  flex-direction: column;
  gap: clamp(2px, 0.5vw, 8px);
  justify-content: center;
  width: clamp(15px, 4vw, 75px);
}

.element-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: clamp(0.2px, 0.1vw, 1px) solid;
  border-radius: 7px;
  padding: clamp(0.5px, 1.3vw, 2px);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.side-text {
  font-size: clamp(2.25px, 0.6vw, 9px);
  align-content: center;
  transform: none !important;
}

.noElement {
  transform: none !important;
}

.element-box,
.noElement,
.side-text {
  aspect-ratio: 6/7;
  z-index: 1;
  height: clamp(15px, 4.6vw, 75px);
}

@media screen and (max-width: 1200px) {

  .element-box,
  .noElement,
  .side-text {
    height: clamp(15px, 4.7vw, 75px);
  }
}

.element-box:hover:not(.highlighted) {
  transform: scale(2);
  z-index: 10;
  box-shadow: 0 0 12px var(--accent1);
}

.hover-element {
  transform: scale(2);
  z-index: 10;
  box-shadow: 0 0 12px var(--accent1);
}

.element-box.highlighted {
  outline: 1px solid;
  transform: scale(1.1);
  z-index: 5;
}

.element-column {
  font-size: clamp(2.75px, 2vw, 11px);
  text-align: center;
  font-weight: 200;
}

.element-symbol {
  text-align: center;
  font-size: clamp(4px, 1vw, 16px);
  font-weight: 700;
}

.element-name,
.element-mass {
  text-align: center;
  font-size: clamp(2.25px, 0.6vw, 9px);
}

.element-number {
  font-size: clamp(2.25px, 0.6vw, 9px);
  text-align: left;
}

.element-box-legend {
  border: 0.5px solid var(--glass);
  align-content: center;
  width: 180px;
  height: 30px;
  border-radius: clamp(1.75px, 0.466vw, 7px);
  padding: 3px;
  background: #07141c;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.element-box-legend:hover {
  transform: scale(1.03);
  box-shadow: 0 0 12px var(--accent1);
}

.element-type {
  text-align: center;
}

.legend-row {
  display: flex;
  flex-direction: row;
  padding: clamp(2px, 0.333vw, 5px);
  justify-content: space-around;
}

.element-type-gases {
  font-size: clamp(2.25px, 0.6vw, 9px);
  text-align: center;
  background: #fe7676;
  border-radius: clamp(2px, 0.333vw, 5px);
}

.element-type-liquids {
  font-size: clamp(2.25px, 0.6vw, 9px);
  text-align: center;
  background: #76a3fe;
  border-radius: clamp(2px, 0.333vw, 5px);
}

.element-type-solids {
  font-size: clamp(2.25px, 0.6vw, 9px);
  text-align: center;
  background: #fef076;
  border-radius: clamp(2px, 0.333vw, 5px);
}

.element-type-artificial {
  font-size: clamp(2.25px, 0.6vw, 9px);
  text-align: center;
  background: #76feca;
  border-radius: clamp(2px, 0.333vw, 5px);
}

.alkaliMetalsLegend {
  background-color: #d8f8ff;
  border-color: #00758c;
  color: #00758c;
  stroke: #00758c;
}

.metalloidsLegend {
  background-color: #fef7e0;
  border-color: #945700;
  color: #945700;
  stroke: #945700;
}

.actinidesLegend {
  background-color: #ffe6d4;
  border-color: #c73200;
  color: #c73200;
  stroke: #c73200;
}

.alkalineEarthMetalsLegend {
  background-color: #ffe7e7;
  border-color: #d60024;
  color: #d60024;
  stroke: #d60024;
}

.reactiveNonMetalsLegend {
  background-color: #e2eeff;
  border-color: #0060f0;
  color: #0060f0;
  stroke: #0060f0;
}

.unknownElementsLegend {
  background-color: #e7e7ea;
  border-color: #3f374f;
  color: #3f374f;
  stroke: #3f374f;
}

.transitionMetalsLegend {
  background-color: #f3e8fd;
  border-color: #6232ec;
  color: #6232ec;
  stroke: #6232ec;
}

.nobleGasesLegend {
  background-color: #ffe7eb;
  border-color: #cd1d5e;
  color: #cd1d5e;
  stroke: #cd1d5e;
}

.postTransitionMetalsLegend {
  background-color: #d6f9e8;
  border-color: #227754;
  color: #227754;
  stroke: #227754;
}

.lanthanidesLegend {
  background-color: #dff3ff;
  border-color: #003355;
  color: #003355;
  stroke: #003355;
}

.alkaliMetals {
  background-color: #d8f8ff;
  border-color: #00758c;
  color: #00758c;
  stroke: #00758c;
}

.metalloids {
  background-color: #fef7e0;
  border-color: #945700;
  color: #945700;
  stroke: #945700;
}

.actinides {
  background-color: #ffe6d4;
  border-color: #c73200;
  color: #c73200;
  stroke: #c73200;
}

.alkalineEarthMetals {
  background-color: #ffe7e7;
  border-color: #d60024;
  color: #d60024;
  stroke: #d60024;
}

.reactiveNonMetals {
  background-color: #e2eeff;
  border-color: #0060f0;
  color: #0060f0;
  stroke: #0060f0;
}

.unknownElements {
  background-color: #e7e7ea;
  border-color: #3f374f;
  color: #3f374f;
  stroke: #3f374f;
}

.transitionMetals {
  background-color: #f3e8fd;
  border-color: #6232ec;
  color: #6232ec;
  stroke: #6232ec;
}

.nobleGases {
  background-color: #ffe7eb;
  border-color: #cd1d5e;
  color: #cd1d5e;
  stroke: #cd1d5e;
}

.postTransitionMetals {
  background-color: #d6f9e8;
  border-color: #227754;
  color: #227754;
  stroke: #227754;
}

.lanthanides {
  background-color: #dff3ff;
  border-color: #003355;
  color: #003355;
  stroke: #003355;
}

.element-info-out {
  overflow: hidden;
  display: none;
  justify-content: space-evenly;
  gap: 1vw;
  align-items: center;
  padding: 5px;
}

.element-info-out.visible {
  display: flex block;
}

.element-info-out-main {
  padding: 1vw;
  width: 15%;
  aspect-ratio: 3.2 / 4;
  border: 0.3vw solid;
  border-radius: 15px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: center;
  z-index: 2;
}

.element-info-out-display {
  display: none;
}

.element-info-out-display.active {
  display: block;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  width: 75%;
  font-size: 14px;
}

.element-info-out-list {
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  height: 100%;
  gap: 1vw;
  width: 15%;
}

.info-panel {
  display: none;
  width: 70%;
  border: 2px solid;
  border-image: var(--gradient-primary) 3;
  padding: 10px;
  color: #fff;
  opacity: 0;
  transition: all 0.4s ease;
  z-index: 1;
}

.info-panel.active {
  display: flex block;
  opacity: 1;
  z-index: 3;
}

#isotopeContainer {
  display: flex;
  flex-direction: column;
}

.slider-container {
  display: flex;
  align-items: center;
  gap: 5px;
  overflow: auto;
  width: 100%;
}

.slider {
  display: flex;
  flex-direction: row;
  gap: clamp(2px, 0.5vw, 8px);
  overflow-x: auto;
  scroll-behavior: smooth;
  padding: 10px 0;
}

.iso-box {
  aspect-ratio: 6/7;
  z-index: 1;
  border-radius: 5px;
  border: 1px solid;
  height: clamp(15px, 4.6vw, 75px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  text-align: center;
  font-size: clamp(4px, 1vw, 16px);
  font-weight: 700;
  cursor: pointer;
}

.nav-btn {
  background: none;
  border: none;
  color: white;
  font-size: 10px;
  cursor: pointer;
}


.pt-info-line {
  opacity: 0;
  max-height: 0;
  transform: translateY(-10px);
  margin-bottom: 0;
  transition: opacity 0.3s ease-out,
    max-height 0.4s ease-out,
    transform 0.3s ease-out,
    margin-bottom 0.3s ease-out;
}

.pt-line-visible {
  opacity: 1;
  max-height: 3em;
  transform: translateY(0);
  margin-bottom: 6px;
}

.ptInfoBtnHidden {
  display: none;
}

.ptInfoBtnVisible {
  display: visible;
}



/*------ Pi Game ------*/
.pi-restart-hidden {
  display: none;
}

.pi-restart-visible {
  display: block;
}

.pi-start-hidden {
  display: none;
}

.pi-start-visible {
  display: block;
}

.pi-comment-hidden {
  display: none;
}

.pi-comment-visible {
  display: block;
}

.piHidden {
  display: none;
}

.piVisible {
  display: block;
}

.pi-inputs {
  display: flex !important;
  flex-wrap: nowrap !important;
  flex-direction: row !important;
  align-items: flex-start !important;
  justify-content: flex-start !important;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.pi-digit-input {
  min-width: 44px;
  width: 44px;
  height: 35px;
  text-align: center;
  border: 1px solid #ccc;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.3s;
  background: #07141c;
  color: var(--text);
  font-family: var(--mono);
}

.dropdown {
  position: relative;
  display: block;
  margin-top: 10px;
}

.dropdown-button {
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--glass);
  background: rgb(0, 0, 0);
  color: var(--text);
  cursor: pointer;
}

.dropdown-button:focus {
  box-shadow: 0 0 0 3px var(--glass);
  border-color: var(--glass);
}

.dropdown-content {
  display: none;
  position: absolute;
  background: rgb(0, 0, 0);
  border: 1px solid var(--glass);
  border-radius: 8px;
  padding: 8px;
  max-height: 220px;
  overflow: auto;
  z-index: 60;
  box-shadow: 0 10px 30px var(--glass);
}

.dropdown.open .dropdown-content,
.dropdown-content.show,
.dropdown-content[aria-hidden="false"] {
  display: block;
}

.dropdown-content label {
  display: block;
  margin: 6px 0;
}



.toggle-switch-container {
  display: inline-block;
}

.slider-switch {
  position: relative;
  width: 71px;
  height: 35.5px;
  background: var(--gradient-secondary);
  color: #fff;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  overflow: hidden;
  z-index: 0;
  transition: transform 0.1s ease, box-shadow 0.2s ease;
}

.slider-switch::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: var(--gradient-primary);
  mask: linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
}

.slider-switch::after {
  content: "";
  border-radius: 6px;
  width: 25px;
  height: 25px;
  background: var(--gradient-tertiary);
  position: absolute;
  top: 5.25px;
  left: 5.25px;
  transition: transform 0.4s;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.slider-switch:hover {
  box-shadow: 0 0 12px var(--glass);
}

input[type="checkbox"] {
  transition: all 0.4s ease;
}

input[type="checkbox"]:checked+.slider-switch::after {
  transform: translateX(35.5px);
  background: var(--gradient-primary);
}

#ngrc.visible {
  display: flex;
  flex-direction: row;
  justify-content: space-evenly;
  gap: 1vw;
  margin-top: 1vw;
}

.ngrcp {
  display:flex;
  flex-direction:column;
  width:20vw;
  height:49vw;
  justify-content:space-evenly;
}
.ngrcb {
  width: 20vw;
  height: 18vw;
  display: flex;
  flex-direction: column;
  border: 2px solid #333;
  border-radius: 10px;
  background: var(--gradient-secondary);
  overflow: hidden;
  position: relative;
}

.ngrcbn {
  background: var(--gradient-tertiary);
  text-align: center;
  padding: 0.5vw;
  font-weight: bold;
  font-size: 1.3vw;
  position: absolute;
  width: 100%;
  height: 2.5vw;
  top: 0;
}
#ngrccm {
  flex: 1;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 1vh;
  position: absolute;
  width: 100%;
  top: 2.5vw;
  height: 12vw;
  color: black;
  overflow: scroll;
}
.ngrccml {
  padding: 5px 10px;
  border-radius: 8px;
  background-color: var(--gradient-tertiary);
  font-size:1vw;
  width: fit-content;
  height: fit-content;
}
.ngrccml.player {
  background-color: #d1e7dd;
  align-self: flex-end;
}
.ngrccml.opponent {
  background-color: #f8d7da;
  align-self: flex-start;
}
.ngrcci {
  display: flex;
  height: 2.5vw;
  position: absolute;
  width: 100%;
  bottom: 0;
}
#ngrcptl {
  flex: 1;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 1vh;
  position: absolute;
  width: 100%;
  top: 2.5vw;
  height: 12vw;
  color: black;
}
#ngrcptc {
  height: 3vw;
  position: absolute;
  bottom: 0.1vw;
  width: 19vw;
  display:flex;
  justify-content: center;
  margin-left: 0.25vw;
  margin-right: 0.25vw;
}
#ngrcplc {
  position: absolute;
  top:3vw;
}
.ngrcplp {
  width:calc(20vw - (4 * 0.2vw));
  border: 0.2vw solid #000;
  border-radius:0.5vw;
  display:flex;
  flex-direction:row;
  padding: 0.2vw;
  margin: 0.2vw;
}
.ngrcplpn {
  width:80%;
}
.ngrcplpm {
  width:20%;
}

#ngrcglm {
  position: absolute;
  top:2.5vw;
  width:calc(20vw);
  display:flex;
  flex-direction:column-reverse;
  padding: 0.2vw;
  gap:0.2vw;
  height:fit-content;
  max-height:15.5vw;
  overflow-y:scroll;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1), rgba(0,0,0,0.5));
  mask-image: linear-gradient(to bottom, rgba(0,0,0,1), rgba(0,0,0,0.5));
}
.ngrcglml {
  width:calc(20vw - (4 * 0.2vw));
  border: 0.2vw solid #000;
  border-radius:0.5vw;
  display:flex;
  flex-direction:row;
}

#ngb {
  --big: 6.5;
  --small: 4vw;
  position: relative;
  width: 49vw;
  height: 49vw;
  aspect-ratio: 1/1;
  background: var(--gradient-secondary);
  border: 1px solid #000;
  display: grid;
  grid-template-rows: var(--big) var(--small) var(--small) var(--small) var(--small) var(--small) var(--small) var(--small) var(--small) var(--small) var(--big);
  grid-template-columns: var(--big) var(--small) var(--small) var(--small) var(--small) var(--small) var(--small) var(--small) var(--small) var(--small) var(--big);
  border-radius: 2vw;
  font-size: clamp(5px, 1vw, 20px);
  text-align: center;
  justify-content: stretch;
}
.ngbphc>div[id*="ngbpp"]{
  display:flex;
  flex-direction:row;
  justify-content:center;
  align-items:center;
  min-height:2vw;
  height:2vw;
  max-height:2vw;
  width:5vw;
  min-width:2vw;
}
div[id*="ngbpp"]{
  display:flex;
  flex-direction:row;
  justify-content:center;
  align-items:center;
  min-height:2.5vw;
  min-width:2.5vw;
  height:100%;
  width:100%;
  position:absolute;
}
.ngbcpp{
  content:"";
  border-radius:50%;
  width: 1.5vw;
  height:1.5vw;
  position:relative;
  margin-bottom:-0.25vw;
}
.ngbcpp::after {
  content:"●●";
  font-size: 10px;
  font-weight: 1000;
  color: black;
  position:absolute;
  right:20%;
  bottom:5%;
}
.ngbcpp.hl{
  width: 2.5vw;
  height:2.5vw;
}
.ngbcpp.hl::after {
  font-size: 15px;
}
.ngbcpp.red {
  background-color:red;
}
.ngbcpp.blue {
  background-color:blue;
}
.ngbcpp.green {
  background-color:green;
}
.ngbcpp.yellow {
  background-color:yellow;
}
.ngbcpp.orange {
  background-color:orange;
}
.ngbcpp.purple {
  background-color:purple;
}
.ngbcpp.magenta {
  background-color:magenta;
}
.ngbcpp.maroon {
  background-color:maroon;
}
.ngbcpp.cyan {
  background-color:cyan;
}
#ngbst,
#ngbvj,
#ngbwh,
#ngbgj {
  border: 0.2vw solid #9b9b9b79;
  height: 6.5vw;
  width: 6.5vw;
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}
#ngbst {
  border-top-left-radius: 2vw;
}
#ngbvj {
  border-top-right-radius: 2vw;
  position: relative;
}
#ngbgj {
  border-bottom-left-radius: 2vw;
}
#ngbwh {
  border-bottom-right-radius: 2vw;
}
.ngbtp,
.ngbbp,
.ngblp,
.ngbrp {
  border: 0.2vw solid #000;
  padding: 2px;
  position: relative;
}
#ngbphl {
  writing-mode: sideways-rl;
}
#ngbphr {
  writing-mode: sideways-lr;
}
.ngbphr,
.ngbphl,
.ngbpht,
.ngbphb {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: stretch;
  text-align: center;
  height: 100%;
  width: 100%;
  position:relative;
}
.ngbtp,
.ngbbp {
  aspect-ratio: 2/3;
  width: 4vw;
  height: 6.5vw;
}
div[id*="ngbp"]:not(.ngblp):not(.ngbrp):not(.ngbbp):not(.ngbtp) {
  position: absolute;
}
.ngblp,
.ngbrp {
  aspect-ratio: 3/2;
  width: 6.5vw;
  height: 4vw;
}
.ngbph {
  display: flex;
  flex-direction: row;
}
#ngbj {
  height: 4vw;
  width: 4vw;
  position: absolute;
  left: 0;
  bottom: 0;
  border-top-right-radius: 1.5vw;
  overflow: hidden;
  background: black;
  display: flex;
  justify-content: center;
  align-items: center;
}
#ngbj:after {
  content: "";
  display: block;
  width: 4vw;
  height: 4vw;
  position: absolute;
  background: conic-gradient(from 0deg,
      #000 0%,
      #111 10%,
      #000 20%,
      #222 30%,
      #000 40%,
      #333 50%,
      #000 60%,
      #222 70%,
      #000 80%,
      #111 90%,
      #000 100%);
}
#ngbvjv {
  position: absolute;
  top: 0.5vw;
  left: 25%;
}
#ngbvjj {
  writing-mode: sideways-rl;
  position: absolute;
  top: 25%;
  right: 0.5vw;
}
.ngbapngt {
  rotate:180deg; 
  position:absolute;
  top: 1vw;
  
}
.ngbapngr {rotate:-90deg;}
.ngbapngl {rotate:90deg;}
.ngbspss {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
#ngbd1 {
  position: relative;
  perspective: 800px;
  grid-column: 5;
  grid-row: 6;
  transform-style: preserve-3d;
  transform: translate(-50%, -50%) rotateX(-25deg) rotateY(25deg);
}
#ngbd2 {
  position: relative;
  perspective: 800px;
  grid-column: 7;
  grid-row: 6;
  transform-style: preserve-3d;
  transform: translate(-50%, -50%) rotateX(-25deg) rotateY(-25deg);
}
#ngbd1 .cube,
#ngbd2 .cube {
  width: 5vw;
  height: 5vw;
  position: absolute;
  top: 50%;
  left: 50%;
  transform-style: preserve-3d;
}
.cube>div[class*="ngbds"] {
  position: absolute;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 0.5vw;
  box-shadow: inset 0 0 0.5vw rgba(0, 0, 0, 0.25);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2.5vw;
  font-weight: bold;
}
.ngbds1 {
  transform: translateZ(2.5vw);
}
.ngbds2 {
  transform: rotateX(-90deg) translateZ(2.5vw);
}
.ngbds3 {
  transform: rotateY(90deg) translateZ(2.5vw);
}
.ngbds4 {
  transform: rotateY(-90deg) translateZ(2.5vw);
}
.ngbds5 {
  transform: rotateX(90deg) translateZ(2.5vw);
}
.ngbds6 {
  transform: rotateX(180deg) translateZ(2.5vw);
}
.dot {
  width: 0.9vw;
  height: 0.9vw;
  background: var(--gradient-tertiary);
  border-radius: 50%;
  position: absolute;
}
.dot.c {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.dot.tl {
  top: 20%;
  left: 20%;
}
.dot.tr {
  top: 20%;
  right: 20%;
}
.dot.bl {
  bottom: 20%;
  left: 20%;
}
.dot.br {
  bottom: 20%;
  right: 20%;
}
.dot.ml {
  top: 50%;
  left: 20%;
  transform: translateY(-50%);
}
.dot.mr {
  top: 50%;
  right: 20%;
  transform: translateY(-50%);
}

#ngbst {
  grid-column: 1;
  grid-row: 1;
}

#ngbp1 {
  grid-column: 2;
  grid-row: 1;
}

#ngbwc1 {
  grid-column: 3;
  grid-row: 1;
}

#ngbp2 {
  grid-column: 4;
  grid-row: 1;
}

#ngbit {
  grid-column: 5;
  grid-row: 1;
}

#ngba1 {
  grid-column: 6;
  grid-row: 1;
}

#ngbp3 {
  grid-column: 7;
  grid-row: 1;
}

#ngbrc1 {
  grid-column: 8;
  grid-row: 1;
}

#ngbp4 {
  grid-column: 9;
  grid-row: 1;
}

#ngbp5 {
  grid-column: 10;
  grid-row: 1;
}

#ngbvj {
  grid-column: 11;
  grid-row: 1;
}

#ngbp6 {
  grid-column: 11;
  grid-row: 2;
}

#ngbsg {
  grid-column: 11;
  grid-row: 3;
}

#ngbp7 {
  grid-column: 11;
  grid-row: 4;
}

#ngbp8 {
  grid-column: 11;
  grid-row: 5;
}

#ngba2 {
  grid-column: 11;
  grid-row: 6;
}

#ngbp9 {
  grid-column: 11;
  grid-row: 7;
}

#ngbwc2 {
  grid-column: 11;
  grid-row: 8;
}

#ngbp10 {
  grid-column: 11;
  grid-row: 9;
}

#ngbp11 {
  grid-column: 11;
  grid-row: 10;
}

#ngbwh {
  grid-column: 11;
  grid-row: 11;
}

#ngbp12 {
  grid-column: 10;
  grid-row: 11;
}

#ngbp13 {
  grid-column: 9;
  grid-row: 11;
}

#ngbrc2 {
  grid-column: 8;
  grid-row: 11;
}

#ngbp14 {
  grid-column: 7;
  grid-row: 11;
}

#ngba3 {
  grid-column: 6;
  grid-row: 11;
}

#ngbp15 {
  grid-column: 5;
  grid-row: 11;
}

#ngbp16 {
  grid-column: 4;
  grid-row: 11;
}

#ngbhc {
  grid-column: 3;
  grid-row: 11;
}

#ngbp17 {
  grid-column: 2;
  grid-row: 11;
}

#ngbgj {
  grid-column: 1;
  grid-row: 11;
}

#ngbp18 {
  grid-column: 1;
  grid-row: 10;
}

#ngbp19 {
  grid-column: 1;
  grid-row: 9;
}

#ngbwc3 {
  grid-column: 1;
  grid-row: 8;
}

#ngbp20 {
  grid-column: 1;
  grid-row: 7;
}

#ngba4 {
  grid-column: 1;
  grid-row: 6;
}

#ngbrc3 {
  grid-column: 1;
  grid-row: 5;
}

#ngbp21 {
  grid-column: 1;
  grid-row: 4;
}

#ngbpt {
  grid-column: 1;
  grid-row: 3;
}

#ngbp22 {
  grid-column: 1;
  grid-row: 2;
}

#ngbwcp,
#ngbrcp {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid #000;
  background: #fff;
  z-index: 10;
  width: 8vw;
  height: 4vw;
}

#ngbwcp {
  transform: rotate(135deg);
}

#ngbrcp {
  transform: rotate(315deg);
}

#ngbwcp {
  grid-column: 3;
  grid-row: 3;
}

#ngbrcp {
  grid-column: 9;
  grid-row: 9;
}

.ngbps1 {
  background: #b88aff;
}

.ngbps2 {
  background: #87d1ff;
}

.ngbps3 {
  background: #9aff8a;
}

.ngbps4 {
  background: #ffe066;
}

.ngbps5 {
  background: #ffa04e;
}

.ngbps6 {
  background: #ff6f6f;
}
.ngbps7 {
  background: #90c1ff;
}

.ngbps8 {
  background: #c4c4c4;
}
.ngbps1, .ngbps2, .ngbps5, .ngbps6{
  height: 1vw !important;
  width: calc(4vw - 9px);
}
.ngbps3,.ngbps4,.ngbps7,.ngbps8{
  width: 1vw !important;
  height: calc(4vw - 9px);
}
div[class*="ngbps"]{
  position:absolute;
  display:flex;
  flex-direction:row;
  justify-content:center;
}
.ngbps1, .ngbps2{
  bottom:0;
}
.ngbps3, .ngbps4{
  left:0;
}
.ngbps5, .ngbps6{
  top:0;
}
.ngbps7, .ngbps8{
  right:0;
}
.ngbppv {
  position:absolute;
}
#ngba1p{
  width:100%;
  right:0;
  top:0;
}
#ngba2p, 
#ngbp6p,
#ngbp7p,
#ngbp8p,
#ngbp9p,
#ngbp10p,
#ngbp11p{
  height:100%;
  right:0;
  bottom:0;
  writing-mode: sideways-lr;
  display:flex;
  flex-direction:row;
  justify-content:center;
}
#ngba3p, 
#ngbp12p,
#ngbp13p,
#ngbp14p,
#ngbp15p,
#ngbp16p,
#ngbp17p{
  width:100%;
  right:0;
  bottom:0;
  display:flex;
  flex-direction:row;
  justify-content:center;
}
#ngba4p, 
#ngbp18p,
#ngbp19p,
#ngbp20p,
#ngbp21p,
#ngbp22p {
  height:100%;
  left:0;
  bottom:0;
  writing-mode: sideways-rl;
  display:flex;
  flex-direction:row;
  justify-content:center;
}
#ngba1n,
#ngba2n,
#ngba3n,
#ngba4n{
  position:absolute;
  display:flex;
  flex-direction:row;
  justify-content:center;
}
#ngba1n{
  width:100%;
  bottom:0;
  left:0;
}
#ngba2n{
  writing-mode: sideways-lr;
  height:100%;
  left:0;
  bottom:0;
}
#ngba3n{
  width:100%;
  top:0;
  left:0;
}
#ngba4n{
  writing-mode: sideways-rl;
  height:100%;
  right:0;
  bottom:0;
}
#ngbp1n,
#ngbp2n,
#ngbp3n,
#ngbp4n,
#ngbp5n{
  width:100%;
  bottom:1vw;
  left:0;
  display:flex;
  flex-direction:row;
  justify-content:center;
}
#ngbp6n,
#ngbp7n,
#ngbp8n,
#ngbp9n,
#ngbp10n,
#ngbp11n{
  writing-mode: sideways-lr;
  height:100%;
  left:1vw;
  bottom:0;
}
#ngbp12n,
#ngbp13n,
#ngbp14n,
#ngbp15n,
#ngbp16n,
#ngbp17n{
  width:100%;
  top:1vw;
  left:0;
}

#ngbp18n,
#ngbp19n,
#ngbp20n,
#ngbp21n,
#ngbp22n{
  writing-mode: sideways-rl;
  height:100%;
  right:1vw;
  bottom:0;
}
.ngbapng {
  width:4vw;
  height:4vw;
}


/*----- Snake Game ----*/
.snake-game-container {
  justify-content: space-around;
}

.snake-controls {
  display: flex;
  flex-direction: column;
  gap: clamp(0.5rem, 2vw, 1.5rem);
  align-items: center;
}

.snake-canvas {
  width: 65vh;
  height: 65vh;
  overflow: hidden;
  border: 2px solid;
  border-image: var(--gradient-primary) 5;
  background-color: rgb(0, 0, 0);
}

#upSnake {
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
}

#downSnake {
  bottom: 5px;
  left: 50%;
  transform: translateX(-50%);
}

#leftSnake {
  top: 50%;
  left: 5px;
  transform: translateY(-50%);
}

#rightSnake {
  top: 50%;
  right: 5px;
  transform: translateY(-50%);
}

#snakeScore {
  overflow: hidden;
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
}

#snakeHighScore {
  overflow: hidden;
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
}

.game-inputs {
  display: flex;
  flex-direction: column;
  gap: clamp(0.5rem, 2vw, 1.5rem);
  align-items: center;
}

.leaderboard-container {
  width: inherit;
  height: 100%;
  border-width: 2px;
  border-style: solid;
  border-image: var(--gradient-primary) 5;
  padding: 20px;
  overflow: hidden;
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
}

#snakeGameLeaderboard {
  padding: 5%;
  font-size: 12px;
}

.snake-direction-pad {
  min-width: 150px;
  min-height: 150px;
  position: relative;
  width: 16vw;
  height: 16vw;
  display: flex;
  justify-content: center;
  align-items: center;
}

.snake-direction-pad button {
  position: absolute;
  width: clamp(50px, 6vw, 80px);
  height: clamp(50px, 6vw, 80px);
  font-size: clamp(16px, 1.2vw, 22px);
  border-radius: 50%;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  overflow: hidden;
}

.snake-direction-pad button::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  padding: 4px;
  background: var(--gradient-primary);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.snake-direction-pad button:hover {
  transform: scale(1.1);
  box-shadow: 0 0 5px var(--accent1);
}

.snake-direction-pad button:active {
  transform: scale(0.95);
  box-shadow: 0 0 5px var(--accent2);
}

/*----- Jet Shooter Game ----*/
.jet-shooter-game-container {
  justify-content: space-around;
}

.jet-shooter-controls {
  display: flex;
  flex-direction: column;
  gap: clamp(0.5rem, 2vw, 1.5rem);
  align-items: center;
}

.jet-shooter-canvas {
  overflow: hidden;
  border: 2px solid;
  border-image: var(--gradient-primary) 5;
  background-color: #111;
}

#leftJetShooter {
  top: 50%;
  left: 2px;
  transform: translateY(-50%);
}

#shootJetShooter {
  top: 50%;
  transform: translateY(-50%);
}

#rightJetShooter {
  top: 50%;
  right: 2px;
  transform: translateY(-50%);
}

#jetShooterScore {
  overflow: hidden;
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
}

#jetShooterShield {
  overflow: hidden;
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
}

#jetShooterBullets {
  overflow: hidden;
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
}

#jetShooterHighScore {
  overflow: hidden;
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
}

#jetShooterGameLeaderboard {
  padding: 5%;
  font-size: 12px;
}

.jet-shooter-direction-pad {
  min-width: 180px;
  min-height: 50px;
  position: relative;
  width: 20vw;
  height: 5vw;
  display: flex;
  justify-content: center;
  align-items: center;
}

.jet-shooter-direction-pad button {
  position: absolute;
  width: clamp(50px, 6vw, 80px);
  height: clamp(50px, 6vw, 80px);
  font-size: clamp(16px, 1.2vw, 22px);
  border-radius: 50%;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  overflow: hidden;
}

.jet-shooter-direction-pad button::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  padding: 4px;
  background: var(--gradient-primary);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.jet-shooter-direction-pad button:hover {
  transform: scale(1.1);
  box-shadow: 0 0 5px var(--accent1);
}

.jet-shooter-direction-pad button:active {
  transform: scale(0.95);
  box-shadow: 0 0 5px var(--accent2);
}





.sr-only {
  overflow: hidden;
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

.sll-hidden {
  display: none;
  opacity: 0;
  pointer-events: none;
}

.sll-visible {
  display: block;
  justify-content: stretch;
  opacity: 1;
  pointer-events: inherit;
}


.theme-previews {
  padding: 5px;
  display: flex;
  flex-wrap: nowrap;
  overflow-x: scroll;
  gap: 12px;
  justify-content: start;
  -webkit-overflow-scrolling: touch;
}

.theme-btn {
  background: none;
  cursor: pointer;
  border-radius: 12px;
  padding: 8px;
  width: clamp(150px, 15vw, 250px);
  aspect-ratio: 5/3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 2px solid var(--background1);
  flex-shrink: 0;
}

.theme-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.theme-btn span {
  display: block;
  text-align: center;
  word-wrap: nowrap;
  font-size: 0.9rem;
  width: 100%;
  color: var(--text-color, #fff);
}

.preview-box {
  width: 100%;
  width: 95%;
  aspect-ratio: 5/3;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.preview-box::before {
  content: "";
  position: absolute;
  bottom: 10%;
  left: 10%;
  width: 40%;
  height: 35%;
  border-radius: 8px;
  background: var(--card);
  opacity: 0.9;
}

.preview-box::after {
  content: "";
  position: absolute;
  top: 10%;
  right: 10%;
  width: 30%;
  height: 25%;
  border-radius: 6px;
  background: var(--accent);
  opacity: 0.9;
}

.preview-box.neutroxity {
  --background: linear-gradient(45deg, #172D50, #480A71);
  --card: linear-gradient(45deg, #0c3b83, #241b77);
  --accent: linear-gradient(45deg, #3c78d8, #9900ff);
  background: var(--background);
}

.preview-box.aurora {
  --background: linear-gradient(45deg, #141e30, #243b55);
  --card: linear-gradient(45deg, #1e6369, #0072ff);
  --accent: linear-gradient(45deg, #2ae9c0, #2ea6ab);
  background: var(--background);
}

.preview-box.neonDark {
  --background: linear-gradient(45deg, #0f0c29, #24243e);
  --card: linear-gradient(45deg, #302b63, #4134a1);
  --accent: linear-gradient(45deg, #ff00cc, #3333ff);
  background: var(--background);
}

.preview-box.cosmicDawn {
  --background: linear-gradient(45deg, #0b0c10, #1f2833);
  --card: linear-gradient(45deg, #2e3239, #3d3f45);
  --accent: linear-gradient(45deg, #ff6f61, #ff9966);
  background: var(--background);
}

.preview-box.galacticVoid {
  --background: linear-gradient(45deg, #0a0a23, #12122b);
  --card: linear-gradient(45deg, #1a1a40, #2d2d5a);
  --accent: linear-gradient(45deg, #6a11cb, #2575fc);
  background: var(--background);
}


/* ====  Responsive ====  */

@media screen and (max-width:800px) {
  /* html, body {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%; */
  /* } */

  .main-header {
    height: var(--header-height-responsive);
  }

  .sidebar-toggle-responsive {
    display: block;
  }

  .sidebar.open {
    left: 0;
  }

  .logo {
    width: 35px !important;
    height: 35px !important;
  }

  .top-nav {
    display: none;
  }

  .sidebar {
    position: fixed;
    top: var(--header-height-responsive);
    left: calc(0px - var(--sidebar-width-collapsed-resonsive));
    width: var(--sidebar-width-collapsed-resonsive) !important;
    height: calc(100vh - var(--header-height-responsive));
    backdrop-filter: blur(10px);
    transition: left 0.3s ease;
    z-index: 1000;
  }

  .sidebar.collapsed .menu-btn {
    width: calc(var(--sidebar-width-collapsed-resonsive) - 10px);
    height: calc(var(--sidebar-width-collapsed-resonsive) - 10px);
  }

  .toggle-btn {
    display: none !important;
  }

  .icon-img {
    width: clamp(6px, 5vw, 20px) !important;
    height: clamp(6px, 5vw, 20px) !important;
    object-fit: none;
  }

  #app {
    margin-left: 0px !important;
    padding: 1rem;
    min-height: calc(100vh - var(--header-height-responsive));
    padding-top: calc(var(--header-height-responsive) + 2px);
  }

  .home-panel {
    overflow: hidden !important;
    padding: 10px;
  }

  .card {
    padding: 1vw !important;
  }

  .home-content {
    padding: 20px;
    width: 40vh;
    min-height: calc(100vh - var(--header-height-responsive) - 72px);
    gap: 50px;
  }

  .snake-canvas {
    height: calc(100vw - 70px);
    width: calc(100vw - 70px);
  }

  .snake-controls {
    gap: 5px;
  }

  .periodic-table {
    justify-content: center;
  }

  .ptColumn {
    width: clamp(12px, 4vw, 60px);
  }

  .element-box,
  .noElement,
  .side-text {
    gap: 0px !important;
    border-radius: 3px;
    width: clamp(12px, 4vw, 60px);
    height: 4.5vw;
    display: block;
  }

  .element-symbol {
    font-size: 2vw;
    line-height: 1;
  }

  .element-number {
    font-size: 1vw;
    line-height: 1;
  }

  .element-name,
  .element-mass,
  .element-type-gases,
  .element-type-liquids,
  .element-type-solids,
  .element-type-artificial {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .element-box:hover:not(.highlighted) .element-symbol {
    line-height: 0.8;
    font-size: 1.5vw;
    margin-bottom: 1px;
  }

  .element-box:hover:not(.highlighted) .element-number {
    line-height: 1;
    font-size: clamp(2px, 13%, 14px) !important;
    align-items: center;
  }

  .element-box:hover:not(.highlighted) .element-name,
  .element-box:hover:not(.highlighted) .element-mass,
  .element-box:hover:not(.highlighted) .element-type-gases,
  .element-box:hover:not(.highlighted) .element-type-liquids,
  .element-box:hover:not(.highlighted) .element-type-solids,
  .element-box:hover:not(.highlighted) .element-type-artificial {
    padding-bottom: 0.5px;
    line-height: 1;
    border-radius: 1px;
    display: block;
    opacity: 1;
    font-size: clamp(2px, 13%, 14px) !important;
    transition: opacity 0.1s ease, transform 0.1s ease;
  }

  .element-box:hover:not(.highlighted) {
    transform: scale(5);
    padding: 1px !important;
  }

  .hover-element .element-symbol {
    line-height: 0.8;
    font-size: 1.5vw;
    margin-bottom: 1px;
  }

  .hover-element .element-number {
    line-height: 1;
    font-size: clamp(2px, 13%, 14px) !important;
  }

  .hover-element .element-name,
  .hover-element .element-mass,
  .hover-element .element-type-gases,
  .hover-element .element-type-liquids,
  .hover-element .element-type-solids,
  .hover-element .element-type-artificial {
    padding-bottom: 0.2px;
    margin-top: 0.1px;
    line-height: 1;
    border-radius: 1px;
    display: block;
    opacity: 1;
    font-size: clamp(2px, 13%, 14px) !important;
    transition: opacity 0.1s ease, transform 0.1s ease;
  }

  .hover-element {
    transform: scale(5) !important;
    z-index: 10;
    padding: 1px !important
  }

  .element-box-legend {
    width: clamp(45px, 17vw, 180px);
    height: clamp(15px, 4vw, 30px);
  }

  .element-type {
    font-size: 1.5vw;
  }
  #ngb {
    width:80vw;
    height:80vw;
    --big: 8.5vw;
    --small: 7vw;
  }
  .ngbtp, .ngbbp {
    width:7vw;
    height:8.5vw;
  }
  .ngbrp, .ngblp {
    width:8.5vw;
    height:7vw;
  }
  .ngrcp {
    position:relative;
    width:4vw;
    height:80vw;
  }
  .ngrcb {
    width:4vw;
    height:38vw;
  }
  .ngrcbn.r {
    height: 38vw;
    width: 4vw;
    writing-mode: sideways-lr;
  }
  #ngrcgl {
  }
  #ngrcpt {
  }
  #ngrcc {
  }
  #ngrcpl {
  }
}

@media screen and (max-width: 500px) {
  .periodic-table {
    gap: clamp(0px, 0.1vw, 20px);
  }

  .ptColumn {
    gap: clamp(0px, 0.1vw, 20px);
  }
}