:root {
  --bg:      #ffffff;
  --text:    #000000;
  --link:    #0000cc;
  --subtle:  #555555;
  --border:  #cccccc;
  --heading: #622424;
}
[data-theme="dark"] {
  --bg:      #1a1a1a;
  --text:    #e0e0e0;
  --link:    #88aaff;
  --subtle:  #aaaaaa;
  --border:  #444444;
  --heading: #622424;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg:      #1a1a1a;
    --text:    #e0e0e0;
    --link:    #88aaff;
    --subtle:  #aaaaaa;
    --border:  #444444;
    --heading: #622424;
  }
}
[data-theme="light"] {
  --bg:      #ffffff;
  --text:    #000000;
  --link:    #0000cc;
  --subtle:  #555555;
  --border:  #cccccc;
  --heading: #622424;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background-color: var(--bg);
  color: var(--text);
  font-family: sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}
a { color: var(--link); }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--heading);
  outline-offset: 2px;
}

/* Topbar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

/* Header: image floats left, h1 + bio text flow alongside */
header {
  margin-bottom: 1rem;
  overflow: hidden;
}
header img {
  float: left;
  width: auto;
  max-width: 100%;
  height: auto;
  margin: 0 1.5rem 0.5rem 0;
}
h1 { font-size: 1.5rem; margin-bottom: 0.4rem; color: var(--heading); }
h2 { font-size: 1.1rem; margin: 1.5rem 0 0.4rem; color: var(--heading); }
header p { margin-top: 0.9rem; }
header p:first-of-type { margin-top: 0; }
hr { border: none; border-top: 1px solid var(--border); margin: 1.2rem 0; }
ul { padding-left: 1.5rem; margin-top: 0.5rem; margin-bottom: 0.8rem; }
ul li { margin-bottom: 0.35rem; }
.lang { font-style: italic; font-size: 0.9rem; }
.fortune { font-style: italic; color: var(--subtle); margin: 0.5rem 0; }
footer { margin-top: 1.5rem; font-size: 0.8rem; color: var(--subtle); }

/* Theme toggle buttons */
.theme-toggle {
  display: flex;
  gap: 0.3rem;
}
.theme-toggle button {
  background: none;
  border: 1px solid var(--border);
  color: var(--subtle);
  cursor: pointer;
  font-size: 0.75rem;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
}
.theme-toggle button.active {
  border-color: var(--heading);
  color: var(--heading);
  font-weight: bold;
}

@media (max-width: 500px) {
  header img { float: none; display: block; margin: 0 0 1rem 0; }
  .topbar { flex-direction: column; align-items: flex-start; }
}