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

/* Variables */
:root {
  --max-width: 600px;
  --font-family: 'Inter', sans-serif;
  --padding: 1rem;
  --header-margin-bottom: 1rem;
  --line-height: 2;
  --font-size: 16px;

  --primary-color-light: #ffffff;
  --background-color-light: #f0f0f0;
  --text-color-light: #333;
  --link-color-light: #1a73e8;
  --bio-color-light: #666;

  --primary-color-dark: #1e1e1e;
  --background-color-dark: #121212;
  --text-color-dark: #e0e0e0;
  --link-color-dark: #8ab4f8;
  --bio-color-dark: #aaa;
}

/* Light Theme */
@media (prefers-color-scheme: light) {
  :root {
    --primary-color: var(--primary-color-light);
    --background-color: var(--background-color-light);
    --text-color: var(--text-color-light);
    --link-color: var(--link-color-light);
    --bio-color: var(--bio-color-light);
  }
}

/* Dark Theme */
@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: var(--primary-color-dark);
    --background-color: var(--background-color-dark);
    --text-color: var(--text-color-dark);
    --link-color: var(--link-color-dark);
    --bio-color: var(--bio-color-dark);
  }
}

/* Global Styles */
html {
  font-family: var(--font-family);
  font-size: var(--font-size);
  line-height: var(--line-height);
}

body {
  max-width: var(--max-width);
  min-height: 100vh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--background-color);
  color: var(--text-color);
  padding: var(--padding);
}

/* Header Styles */
header {
  padding: var(--padding) 0;
  margin-bottom: var(--header-margin-bottom);
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-color);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 24px;
  margin-bottom: 0.5rem;
}

.bio {
  font-size: 14px;
  color: var(--bio-color);
  margin-bottom: 1rem;
}

/* Main Content Styles */
main {
  width: 100%;
  flex: 1;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
  overflow-y: auto;
  max-height: 400px;
}

.link-item {
  display: block;
  padding: 16px 20px;
  text-decoration: none;
  color: var(--link-color);
  background: var(--primary-color);
  border-radius: 12px;
  border: 1px solid var(--link-color);
  transition: background-color 0.25s, color 0.25s;
}

.link-item:hover,
.link-item:focus {
  background-color: var(--link-color);
  color: var(--primary-color);
}

.link-item p {
  line-height: 1.5;
  font-weight: 500;
}

/* Footer Styles */
footer {
  width: 100%;
  text-align: center;
  padding: 1rem 0;
  font-size: 14px;
  gap: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ScrollBar */
::-webkit-scrollbar {
  width: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: transparent;
}

::-webkit-scrollbar-thumb:hover {
  background: transparent;
}