:root {
  --bg: #fafaf8;
  --fg: #222;
  --header-bg: #f3f3f0;
  --header-fg: #222;
  --card-bg: #fff;
  --card-fg: #222;
  --footer-bg: #f3f3f0;
  --footer-fg: #222;
  --border: 3px solid #222;
  --link: #0070c0;
  --link-hover: #005080;
  --radius: 18px;
  --font-family: 'Indie Flower', cursive, sans-serif;
}

body {
  background: var(--bg);
  color: var(--fg);
  margin: 0;
  font-family: var(--font-family);
  transition: background 0.2s, color 0.2s;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--header-bg);
  color: var(--header-fg);
  padding: 1.4em 2em;
  border: var(--border);
  border-radius: var(--radius);
  margin: 12px;
}

.header-left {
  font-size: 2em;
}

nav {
  display: flex;
  align-items: center;
  gap: 2em;
}

nav a {
  color: var(--link);
  text-decoration: none;
  font-size: 1.3em;
  font-family: inherit;
  font-weight: bold;
  transition: color 0.2s;
}
nav a:hover {
  color: var(--link-hover);
}

#mode-toggle {
  background: none;
  border: none;
  font-size: 1.5em;
  cursor: pointer;
  margin-left: 1em;
  color: var(--header-fg);
}

main {
  margin: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  padding: 2rem 1.5rem;
  align-items: stretch;
  background: var(--bg);
  border: var(--border);
  border-radius: var(--radius);
  min-height: 100%;
  flex: 1;
}

.project-card {
  background: var(--card-bg, #fff);
  color: inherit;
  padding: 1.25rem 1rem;
  border: 1px solid rgba(0, 0, 0, .08);
  border-radius: 14px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, .06);
  display: flex;
  flex-direction: column;
  gap: .6rem;
  transition: box-shadow .25s, transform .25s, border-color .25s;
}

.dark .project-card {
  background: var(--card-bg-dark, #1e1e1e);
  border-color: rgba(255, 255, 255, .12);
  box-shadow: 0 2px 6px rgba(0, 0, 0, .5);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .15);
}

.dark .project-card:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, .7);
}

.project-logo {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .08);
}

.dark .project-logo {
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .15);
}

.project-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: .5px;
}

.project-desc {
  margin: 0 0 .5rem;
  line-height: 1.35;
  font-size: .85rem;
  flex-grow: 1;
}

.project-link {
  align-self: flex-start;
  text-decoration: none;
  font-size: .8rem;
  font-weight: 600;
  padding: .4rem .75rem;
  border-radius: 20px;
  border: 1px solid currentColor;
  transition: background .25s, color .25s;
  color: #000; /* light mode link color */
}

.project-link:hover,
.project-link:focus {
  background: currentColor;
  color: #fff;
}

.dark .project-link:hover,
.dark .project-link:focus {
  color: #000;
}

.project-link:focus {
  outline: 2px solid #4d90fe;
  outline-offset: 2px;
}

.dark .project-link {
  color: #fff; /* dark mode link color */
}

footer {
  margin: 24px 12px 12px 12px;
  background: var(--footer-bg);
  color: var(--footer-fg);
  border: var(--border);
  border-radius: var(--radius);
  text-align: center;
  padding: 1em;
  font-size: 1.2em;
}

.site {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site > main {
  flex: 1 0 auto;
}

.site > footer {
  margin-top: auto;
}

@media (max-width: 900px) {
  .projects {
    flex-direction: column;
    gap: 1em;
    padding: 1em;
  }
  .project-card {
    margin: 0.5em 0;
  }
}

@media (max-width: 600px) {
  .projects {
    grid-template-columns: 1fr;
  }
  .project-card {
    padding: 1rem;
  }
}

/* Dark mode */
body.dark {
  --bg: #23272a;
  --fg: #e6e6e6;
  --header-bg: #181a1b;
  --header-fg: #e6e6e6;
  --card-bg: #23272a;
  --card-fg: #e6e6e6;
  --footer-bg: #181a1b;
  --footer-fg: #e6e6e6;
  --link: #66aaff;
  --link-hover: #98c9ff;
  --border: 3px solid #e6e6e6;
}