/* YOU++ */
:root {
  --bg: #0a0a0a;
  --fg: #e8e8e8;
  --accent: #4fc3f7;
  --muted: #888;
  --code-bg: #1a1a1a;
  --max-w: 680px;
}

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

body {
  font-family: -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  padding: 2rem 1.5rem;
}

main {
  max-width: var(--max-w);
  margin: 0 auto;
}

h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 0.3em;
  letter-spacing: -0.02em;
}

h1 span.plus { color: var(--accent); }

h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-top: 2em;
  margin-bottom: 0.5em;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 1.5em;
  margin-bottom: 0.4em;
}

p { margin-bottom: 1em; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.subtitle {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 2em;
}

.nav {
  max-width: var(--max-w);
  margin: 0 auto 2em;
  padding-bottom: 1em;
  border-bottom: 1px solid #222;
  display: flex;
  gap: 0.6em 1.2em;
  flex-wrap: wrap;
  align-items: baseline;
}

.nav a { font-size: 0.82rem; }
.nav .logo { font-weight: 700; font-size: 1.1rem; width: 100%; margin-bottom: 0.3em; }
.nav .logo span { color: var(--accent); }

code {
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

pre {
  background: var(--code-bg);
  padding: 1.2em;
  border-radius: 6px;
  overflow-x: auto;
  margin: 1em 0;
  font-size: 0.85em;
  line-height: 1.5;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

ul, ol {
  margin: 0.5em 0 1em 1.5em;
}

li { margin-bottom: 0.4em; }

blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1em;
  color: var(--muted);
  margin: 1em 0;
  font-style: italic;
}

.card {
  background: var(--code-bg);
  border: 1px solid #222;
  border-radius: 8px;
  padding: 1.5em;
  margin: 1em 0;
}

.card h3 { margin-top: 0; }

.footer {
  max-width: var(--max-w);
  margin: 4em auto 0;
  padding-top: 1.5em;
  border-top: 1px solid #222;
  color: var(--muted);
  font-size: 0.8rem;
}

.callout {
  background: #1c1c0e;
  border: 1px solid #4a4520;
  border-left: 3px solid #e6c619;
  border-radius: 6px;
  padding: 1em 1.2em;
  margin: 1.5em 0;
  font-size: 0.95rem;
}

.callout strong { color: #e6c619; }

details {
  background: var(--code-bg);
  border: 1px solid #222;
  border-radius: 6px;
  padding: 1em 1.2em;
  margin: 1em 0;
}

details summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

details summary:hover { text-decoration: underline; }

details[open] summary { margin-bottom: 1em; }

table.breakdown {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.95rem;
}

table.breakdown td {
  padding: 0.6em 0.8em;
  border-bottom: 1px solid #222;
  vertical-align: top;
}

table.breakdown td:first-child {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 1.1em;
  white-space: nowrap;
  width: 4em;
  color: var(--accent);
}

.disclosure {
  margin-top: 3em;
  padding-top: 1em;
  border-top: 1px solid #222;
  color: var(--muted);
  font-size: 0.8rem;
}