:root {
  --main-bg-color: #FAFAFA;
  --secondary-bg-color: #FFFFFF; 
  --main-text-color: #333333;
  --secondary-text-color: #555555;
  --accent-color: #EEEEEE;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);

  --github-link-hover: rgba(0, 0, 0, 0.70);
  --github-link-active: rgba(0, 0, 0, 0.50);

  --github-modal-link-active: rgba(0, 0, 0, 0.05);
}

.dark {
  --main-bg-color: #121212;
  --secondary-bg-color: #1E1E1E;
  --main-text-color: #EAEAEA;
  --secondary-text-color: #858585;
  --shadow-color: #000000;
  --accent-color: #292929;

  --shadow-sm: 
    0 1px 2px rgba(0, 0, 0, 0.40),
    0 0 1px rgba(255, 255, 255, 0.03);
  --shadow-md:
    0 2px 4px rgba(0, 0, 0, 0.55),
    0 1px 2px rgba(255, 255, 255, 0.04);
  --shadow-lg:
    0 4px 12px rgba(0, 0, 0, 0.65),
    0 1px 4px rgba(255, 255, 255, 0.05);

  --github-link-hover: rgba(255, 255, 255, 0.10);
  --github-link-active: rgba(255, 255, 255, 0.30);

  --github-modal-link-active: rgba(255, 255, 255, 0.80);
}

body {
  font-family: "Segoe UI", Roboto, sans-serif;
  background-color: var(--main-bg-color);
  color: var(--main-text-color);
  padding: 1.5rem;
  transition: background-color 0.3s, color 0.3s;
}

a {
  color: var(--theme-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.main-container,
.header-container,
.social-media-container,
footer
{
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease-in-out;
}

.content-loaded {
  opacity: 1 !important;
  visibility: visible !important;
}

.main-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
}

/* scrollbar */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--secondary-bg-color);
  border-radius: 8px;
}

::-webkit-scrollbar-thumb {
  background-color: var(--theme-color);
  border-radius: 8px;
  border: 3px solid var(--secondary-bg-color);
}

::-webkit-scrollbar-thumb:hover {
  background-color: var(--theme-color);
  opacity: 0.8;
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--theme-color) var(--secondary-bg-color); 
}