style.css

:root[data-theme="dark"] {
  --background-image: url(images/bg-dark.png);
  --navbar-text: #ffffff;
  --main-text: #f2f2f2;
  --muted-text: #a4a4a4;
  --main-bg: #121212;
  --reason-bg: #38384f;
  --navbar-bg: #000000cc;
  --navbar-hover-bg: #ffffff90;
  --navbar-hover-text: #000;
  --scrollbar-track: #3d3d3d;
  --scrollbar-thumb: #717171;
  --about-text: var(--main-text);
  --about-muted: var(--muted-text);
  --switcher-color: invert(100%) sepia(2%) saturate(122%) hue-rotate(243deg)
    brightness(113%) contrast(90%);
  --highlight-color: #4ede00;
  --highlight2-color: #007f04;
}

:root[data-theme="light"] {
  --background-image: url(images/bg-light.png);
  --main-text: #fff;
  --muted-text: #9c9c9c;
  --reason-text: #fff;
  --navbar-text: #303030;
  --main-bg: #fff;
  --reason-bg: #5a5a6b;
  --navbar-bg: #f5f5f7cc;
  --navbar-hover-bg: #00000090;
  --navbar-hover-text: #fff;
  --scrollbar-track: #6c6c6c;
  --scrollbar-thumb: #b0b0b0;
  --about-text: #2a2a2a;
  --about-muted: #808080;
  --switcher-color: invert(6%) sepia(1%) saturate(751%) hue-rotate(314deg)
    brightness(101%) contrast(71%);
  --highlight-color: #0066ff;
  --highlight2-color: #143398;
}

:root {
  --default-transition: color 0.3s ease-in-out,
    background-color 0.4s ease-in-out, border-color 0.3s ease-in-out,
    fill 0.3s ease-in-out, transform 0.3s ease-in-out;
}

html {
  scroll-behavior: smooth;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
}

body {
  transition: var(--default-transition);
  margin: 0px;
  font-family: "Fira Sans", sans-serif;
}

.main {
  background: var(--background-image);
  position: relative;
  align-items: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  display: flex;
  flex-direction: column;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  min-height: 100vh;
  min-width: 100%;
  top: 0;
  left: 0;
}

.main h1 {
  color: var(--main-text);
}

.main h3 {
  color: var(--muted-text);
}

.main button {
  background-image: linear-gradient(
    92.88deg,
    #455eb5 9.16%,
    #5643cc 43.89%,
    #673fd7 64.72%
  );
  border-radius: 12px;
  margin: 5px;
  border-style: none;
  box-sizing: border-box;
  color: var(--main-text);
  cursor: pointer;
  flex-shrink: 0;
  font-family:
    "Inter UI",
    "SF Pro Display",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Oxygen,
    Ubuntu,
    Cantarell,
    "Open Sans",
    "Helvetica Neue",
    sans-serif;
  font-size: 16px;
  font-weight: 500;
  height: 4rem;
  padding: 0 1.6rem;
  text-align: center;
  text-shadow: rgba(0, 0, 0, 0.25) 0 3px 8px;
  transition: all 1s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  width: 50%;
  min-height: 7vh;
  height: 9vh;
  text-decoration: none;
}

.main button:hover {
  box-shadow: rgba(80, 63, 205, 0.5) 0 1px 30px;
  transition-duration: 0.5s;
}

@media (min-width: 768px) {
  .button-36 {
    padding: 0 2.6rem;
  }
}

.main img {
  width: 10vh;
}

.next__slide {
  transition: var(--default-transition);
  padding: 20px;
  text-align: center;
  color: var(--about-text);
  background-color: var(--main-bg);
  min-height: 60vh;
}

.reasons {
  flex-wrap: wrap;
  gap: 20px;
  display: flex;
  justify-content: space-between;
  justify-content: center;
  text-align: center;
  color: var(--reason-text);
}

.reason {
  text-decoration: none;
  text-align: center;
  width: 250px;
  height: 270px;
  border: 2px solid;
  border-color: #22ff88;
  background-color: var(--reason-bg);
  border-radius: 10px;
  padding: 20px;
  transition-duration: 0.5s;
  font-size: 16px;
  opacity: 0;
  transition: all 1s;
  transform: translateX(-100%);
}

.reason p {
  color: #d5d5d5;
}

@media (orientation: landscape) {
  .reason:nth-child(2) {
    transition-delay: 100ms;
  }

  .reason:nth-child(3) {
    transition-delay: 200ms;
  }
}

.show {
  opacity: 1;
  transform: translateX(0);
}

.reason:hover {
  border-color: #ff95d6;
  color: #ff95d6;
  font-size: 17.6px;
  height: 280px;
  width: 270px;
  margin-left: 0px;
  margin-right: 0px;
  margin-bottom: 10px;
}

.navbar-left,
.navbar-right {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar {
  transition: var(--default-transition);
  justify-content: space-between;
  display: flex;
  align-items: center;
  display: flex;
  align-items: center;
  backdrop-filter: blur(5px);
  z-index: 1;
  overflow: hidden;
  background-color: var(--navbar-bg);
  position: fixed;
  top: 0;
  width: 100%;
}

.navbar a {
  transition: 1s 5ms;
  float: left;
  display: block;
  color: var(--navbar-text);
  text-align: center;
  text-decoration: none;
}

.navbar .text {
  padding: 20px;
}

.navbar img {
  padding: 8px 10px 8px 10px;
  height: 40px;
  width: 40px;
}

.navbar a:hover {
  background: var(--navbar-hover-bg);
  color: var(--navbar-hover-text);
}

#switcher {
  transition: 0.3s 5ms;
  filter: var(--switcher-color);
  float: right;
  width: 25px;
  margin: 2px;
  cursor: pointer;
}

.about {
  transition: var(--default-transition);
  background-color: var(--main-bg);
  color: var(--about-text);
  padding: 1px;
  text-align: center;
}

.about p {
  color: var(--about-muted);
  margin-left: 20vh;
  margin-right: 20vh;
}

@media (max-width: 1000px) {
  .about p {
    margin-left: 5vh;
    margin-right: 5vh;
  }
}

.warning {
  color: var(--about-text);
  padding-top: 30px;
}

.policy {
  color: var(--about-text);
  text-align: left;
  padding-left: 20px;
  padding-right: 20px;
  padding-top: 50px;
  background-color: var(--main-bg);
}

.policy a:link {
  color: var(--highlight-color);
}

.policy a:visited {
  color: var(--highlight2-color);
}