@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Source+Serif+4:ital,wght@0,400;0,600;0,700;1,400;1,600&display=swap');

/* ── Variables ───────────────────────────────────────── */
:root {
  --accent:      #A8C5E2;
  --accent-soft: #cfdef0;
  --accent-dark: #7aaacf;
  --bg:          #fafaf7;
  --bg-2:        #f1efe9;
  --fg:          #2b2b2b;
  --muted:       #888;
  --line:        #d6d3cd;
  --line-soft:   #e7e4dd;
}
.dark {
  --bg:        #1f1d1a;
  --bg-2:      #181614;
  --fg:        #ece9e1;
  --muted:     #8a857c;
  --line:      #3a3733;
  --line-soft: #2a2724;
}

/* ── Reset ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  transition: background 0.25s, color 0.25s;
  min-height: 100vh;
}

/* ── Nav ─────────────────────────────────────────────── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px dashed var(--line);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
}
.nav-icon { width: 32px; height: 32px; }

.theme-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.15s, border-color 0.15s;
}
.theme-btn:hover { background: var(--accent); border-color: var(--fg); }

/* ── Divider ─────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1.5px solid var(--fg);
  margin: 0 48px;
}

/* ── Footer ──────────────────────────────────────────── */
footer {
  border-top: 1px dashed var(--line);
  padding: 20px 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 600px) {
  nav    { padding: 16px 20px; }
  .divider { margin: 0 20px; }
  footer { padding: 20px; }
}