:root {
  --container: 860px;
  --radius: 8px;
  --shadow: 0 0 0 1px var(--border) inset;

  /* dark by default */
  --bg: #0d1117;
  --panel: #0b0f14;
  --fg: #e6edf3;
  --muted: #9aa0a6;
  --link: #00e676; /* terminal green */
  --border: #1f2937;
}

html[data-theme="light"] {
  --bg: #f7f7f7;
  --panel: #fff;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --link: #0b7a4b;
  --border: #e5e5e5;
}

* { box-sizing: border-box; }

html, body {
  padding: 0;
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  line-height: 1.6;
  font-size: 15px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px 16px;
}

.site-header, .site-footer {
  display: flex;
  align-items: baseline;
  gap: 16px;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border);
}

.site-footer { border-top: 1px dashed var(--border); border-bottom: none; color: var(--muted); }

.brand { text-decoration: none; color: inherit; display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { display: none; }
.brand-name { font-weight: 700; }

.site-nav { display: flex; align-items: center; gap: 10px; }
.site-nav a { color: var(--fg); text-decoration: none; padding: 4px 8px; border-radius: 6px; }
.site-nav a:hover { background: var(--panel); box-shadow: var(--shadow); }
.site-nav .sep { color: var(--muted); margin: 0 8px; }

h1, h2, h3 { margin: 20px 0 12px; line-height: 1.25; }
h1 { font-size: 24px; }
h2 { font-size: 18px; }

a { color: var(--link); text-underline-offset: 3px; }
a:hover { filter: brightness(1.1); }

.list {
  display: grid;
  gap: 8px;
  margin: 8px 0 24px;
}

.post-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
}

.post-item time { color: var(--muted); }

.muted { color: var(--muted); }

.tags { display: inline-flex; gap: 6px; }
.tag { color: var(--muted); text-decoration: none; }
.tag:hover { text-decoration: underline; }

.lead { margin-top: 6px; color: var(--muted); }

.hr { border-bottom: 1px dashed var(--border); margin: 24px 0; }

/* Prose */
.prose p { margin: 12px 0; }
.prose pre { background: #0b0f14; border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; overflow: auto; box-shadow: var(--shadow); }
.prose code { background: #0b0f14; border: 1px solid var(--border); border-radius: 4px; padding: 2px 4px; }

/* Terminal-styled header */
.terminal .prompt { color: var(--muted); }
.terminal .prompt .user { color: var(--link); }
.terminal .prompt .host { color: #58a6ff; }

/* Toggle */
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--panel);
  box-shadow: var(--shadow);
  color: var(--fg);
  cursor: pointer;
  user-select: none;
}

/* Slider switch */
.switch { position: relative; width: 56px; height: 28px; }
.switch input { position: absolute; inset: 0; opacity: 0; }
.switch .slider {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  cursor: pointer;
}
.switch .icon {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  font-size: 12px; line-height: 1; color: var(--muted);
}
.switch .icon.sun { left: 8px; opacity: .5; }
.switch .icon.moon { right: 8px; opacity: 1; }
.switch .knob {
  position: absolute;
  top: 2px; left: 2px;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--fg);
  border: 1px solid var(--border);
  mix-blend-mode: difference;
  transition: transform 0.2s ease;
}
.switch input:checked + .slider .knob { transform: translateX(28px); }
.switch input:checked + .slider .sun { opacity: 1; }
.switch input:checked + .slider .moon { opacity: .5; }