@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Inter:wght@400;500&display=swap');

:root {
  --bg: #f0edf6;
  --surface: #e8e3f0;
  --text: #1a1a2e;
  --text-muted: #6b6880;
  --accent: #7c6fa0;
  --sidebar-width: 160px;
}

[data-theme="dark"] {
  --bg: #13111a;
  --surface: #1e1b27;
  --text: #e8e3f0;
  --text-muted: #9992b0;
  --accent: #a899cc;
}

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
  line-height: 1.6;
  transition: background-color 0.2s, color 0.2s;
}

/* ── Header ── */
header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--surface);
}

header h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* ── Theme toggle ── */
#theme-toggle {
  background: none;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
}

/* ── Layout ── */
.container {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: sticky;
  top: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sidebar-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1rem;
  border: 2px solid var(--accent);
}

.sidebar ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sidebar ul ul {
  margin-top: 0.3rem;
  margin-left: 0.8rem;
}

.sidebar a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
}

.sidebar a:hover,
.sidebar a.active {
  color: var(--accent);
}

.sidebar a.active {
  font-weight: 700;
}

/* ── Main content ── */
main {
  flex: 1;
  min-width: 0;
}

main h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}

main p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

main p:last-child {
  margin-bottom: 0;
}

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

main a:hover {
  text-decoration: underline;
}

/* ── Footer ── */
footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--surface);
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.social-icon {
  color: var(--text-muted);
  transition: color 0.2s;
}

.social-icon:hover {
  color: var(--accent);
}