:root {
  --blue: #60b5ff;
  --orange: #ff9149;
  --ink: #0a0a0a;
  --cream: #fdfaf2;
  --bg: #fdfaf2;
  --surface: #ffffff;
  --text: #0a0a0a;
  --text-muted: #555;
  --border: 3px solid var(--ink);
  --border-thick: 4px solid var(--ink);
  --shadow: 5px 5px 0px var(--ink);
  --shadow-lg: 7px 7px 0px var(--ink);
  --shadow-sm: 3px 3px 0px var(--ink);
  --transition:
    background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease,
    box-shadow 0.25s ease;
}

body.dark-mode {
  --bg: #111318;
  --surface: #1c1f27;
  --text: #f0ece0;
  --text-muted: #aaa;
  --ink: #f0ece0;
  --shadow: 5px 5px 0px #f0ece0;
  --shadow-lg: 7px 7px 0px #f0ece0;
  --shadow-sm: 3px 3px 0px #f0ece0;
  --border: 3px solid #f0ece0;
  --border-thick: 4px solid #f0ece0;
}

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

body {
  font-family: "Space Mono", monospace;
  background-color: var(--bg);
  color: var(--text);
  padding: 48px 20px;
  min-height: 100vh;
  background-image:
    linear-gradient(var(--ink) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: -1px -1px;
  transition: var(--transition);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: var(--bg);
  opacity: 0.88;
  transition: background-color 0.25s ease;
}

.container {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  background-color: var(--blue);
  border: var(--border-thick);
  box-shadow: var(--shadow-lg);
  padding: 16px 24px;
  transition: var(--transition);
}

h1 {
  font-family: "Archivo Black", sans-serif;
  font-size: clamp(1.4rem, 4vw, 2rem);
  text-transform: uppercase;
  letter-spacing: -0.5px;
  color: var(--ink);
  transition: color 0.25s ease;
}

#toggleBtn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: "Archivo Black", sans-serif;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  background-color: var(--orange);
  color: var(--ink);
  border: var(--border);
  box-shadow: var(--shadow);
  transition:
    transform 0.1s,
    box-shadow 0.1s,
    background-color 0.25s ease,
    color 0.25s ease;
}

#toggleBtn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

#toggleBtn:active {
  transform: translate(4px, 4px);
  box-shadow: 1px 1px 0px var(--ink);
}

body.dark-mode #toggleBtn {
  background-color: var(--orange);
  color: #0a0a0a;
  border-color: #f0ece0;
  box-shadow: 5px 5px 0px #f0ece0;
}

.demo-card {
  background-color: var(--surface);
  border: var(--border-thick);
  box-shadow: var(--shadow-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: var(--transition);
}

.card-label {
  font-family: "Archivo Black", sans-serif;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  transition: color 0.25s ease;
}

.demo-card h2 {
  font-family: "Archivo Black", sans-serif;
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  text-transform: uppercase;
  color: var(--text);
  transition: color 0.25s ease;
}

.demo-card p {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.75;
  color: var(--text-muted);
  transition: color 0.25s ease;
}

.card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-family: "Archivo Black", sans-serif;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 10px;
  border: var(--border);
  background-color: var(--blue);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

body.dark-mode .tag {
  background-color: #1e3a5f;
  color: var(--text);
}

footer {
  position: relative;
  z-index: 1;
  margin-top: 16px;
  padding: 14px 24px;
  border: var(--border-thick);
  box-shadow: var(--shadow);
  background-color: var(--orange);
  font-family: "Space Mono", monospace;
  font-size: 13px;
  color: #0a0a0a;
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  transition:
    box-shadow 0.25s ease,
    border-color 0.25s ease;
}

footer i.fa-heart {
  color: #cc0000;
}

footer strong {
  font-family: "Archivo Black", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-socials {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.social-link {
  font-family: "Space Mono", monospace;
  font-size: 12px;
  color: #0a0a0a;
  text-decoration: none;
  padding: 5px 12px;
  border: 3px solid #0a0a0a;
  box-shadow: 3px 3px 0px #0a0a0a;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition:
    transform 0.1s,
    box-shadow 0.1s;
}

.social-link.twitter {
  background-color: var(--blue);
}

.social-link.github {
  background-color: var(--cream);
}

.social-link:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px #0a0a0a;
}

.social-link:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0px #0a0a0a;
}