/*index.html*/
@font-face {
  font-family: "LXGWWenKai";
  src: url("fonts/LXGWWenKai.woff") format("woff");
  font-display: swap;
}

:root {
  --color-black: #000000;
  --color-darkest: #1a1a1a;
  --color-darker: #333333;
  --color-dark: #4d4d4d;
  --color-mid-dark: #666666;
  --color-mid: #808080;
  --color-mid-light: #999999;
  --color-light: #b3b3b3;
  --color-lighter: #cccccc;
  --color-lightest: #e6e6e6;
  --color-white: #ffffff;
}

@keyframes gradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 60px;
  font-size: 16px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

header {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 30px 0 20px;
  font-size: 25px;
  background: linear-gradient(135deg, var(--color-darkest), var(--color-darker), var(--color-dark), var(--color-mid-dark), var(--color-mid), var(--color-mid-light), var(--color-light),
  var(--color-lighter), var(--color-lightest));
  background-size: 800% 800%;
  animation: gradient 6s ease-in-out infinite;
}

body {
  font-family: "LXGWWenKai", system-ui, sans-serif;
  line-height: 1.6;
  background-color: var(--color-lightest);
}

header h1 {
  animation: bounce 3s ease-in-out infinite;
}

header p {
  animation: bounce 3s ease-in-out infinite;
  animation-delay: 0.2s;
}

.main_nav {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background-color: var(--color-darker);
}

.main_nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 0 auto;
  padding: 15px 0;
  list-style: none;
  font-size: 20px;
  text-align: center;
}

.main_nav a {
  padding: 10px 20px;
  text-decoration: none;
  color: var(--color-lighter);
}

.main_nav a:hover {
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-white);
}

.images_scene {
  margin: 10px;
}

.images_scene img {
  width: 100%;
  height: auto;
  border: 10px solid var(--color-lightest);
  border-radius: 20px;
  box-shadow: 0 0 20px var(--color-black);
}

section {
  margin: 32px auto;
  padding: 32px;
  border-radius: 20px;
  background-color: var(--color-white);
  box-shadow: 0 0 20px var(--color-black);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: fadeIn 2s ease-in-out;
}

section:hover {
  transform: translateY(-3px);
  box-shadow: none;
}

h2 {
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 2px solid var(--color-darkest);
}

.jump_btn {
  display: inline-block;
  margin-top: 15px;
  padding: 6px 12px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--color-white);
  background-color: var(--color-darker);
}

.learn_icon, .contact_icon {
  margin: 5px;
  font-size: 24px;
}

footer {
  padding: 10px;
  text-align: center;
  color: var(--color-darker);
  background-color: var(--color-lightest);
}

/*resource.html*/
.back_to_top {
  position: fixed;
  right: 20px;
  bottom: 80px;
  z-index: 999999;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-darker);
  font-size: 24px;
  text-decoration: none;
}

.back_home {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 999999;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-darker);
  font-size: 24px;
  text-decoration: none;
}

h3 {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  border-bottom: 1px solid var(--color-lightest);
}
.resource_card {
  margin-top: 20px;
  padding: 20px;
  border-left: 5px solid var(--color-black);
  border-radius: 15px;
  box-shadow: 0 0px 10px var(--color-black);
}

.resource_card p {
  margin: 5px;
  font-style: italic;
  color: var(--color-mid-light);
}

.tip_tag {
  display: inline-block;
  margin-left: 10px;
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 10px;
  color: var(--color-white);
  background-color: var(--color-black);
}

.stars_container {
  margin: 5px 0;
  color: var(--color-black);
}