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

/* Base */
html {
  height: 100%;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #ffffff;
  color: #111;
}

body {
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s ease, color 0.3s ease;
}

/* Layout */
.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

/* Typography */
h1 {
  font-size: 2.5rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

p {
  font-size: 1rem;
color: var(--muted);
}

footer {
  position: fixed;
  bottom: 24px;
  width: 100%;
  text-align: center;
  font-size: 0.9rem;
}

footer a {
  color: var(--muted);
}

:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
}

body.dark {
  --bg: #0f0f0f;
  --text: #eaeaea;
  --muted: #aaaaaa;
}

#theme-toggle {
  position: fixed;
  top: 20px;
  left: 20px;
  background: none;
  border: 1px solid var(--muted);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.9rem;
  opacity: 0.6;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

#theme-toggle:hover {
  opacity: 1;
  transform: scale(1.05);
}