@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=DM+Serif+Display&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --bg: #fcfbf9;
  --fg: #1a1a1a;
  --muted: #7a7a7a;
  --light-muted: #aaa;
  --border: #ece9e3;
  --card: #fff;
  /* 6-axis color system */
  --teal: #4a9ab5;
  --teal-light: #e8f4f8;
  --lavender: #8a65b8;
  --lavender-light: #f0eaf6;
  --ocean: #2a6a9a;
  --ocean-light: #e8f0f8;
  --sunset: #d06848;
  --sunset-light: #fceee8;
  --forest: #3a8a5a;
  --forest-light: #eaf6f0;
  --rose: #b8507a;
  --rose-light: #f8eaf0;

  /* Semantic aliases (for backwards compat) */
  --accent: var(--teal);
  --accent-light: var(--teal-light);
  --green: var(--forest);
  --green-light: var(--forest-light);
  --blue: var(--ocean);
  --blue-light: var(--ocean-light);
  --purple: var(--lavender);
  --purple-light: var(--lavender-light);
  --gold: #d4a017;
  --gold-light: #fdf8eb;
  --nav-height: 64px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
}

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

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ─── Navigation ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(252,251,249,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; height: 100%;
  gap: 32px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: 'DM Serif Display', serif;
  font-size: 1.15rem; font-weight: 400;
  white-space: nowrap;
}
.nav-logo .logo-dots {
  display: grid; grid-template-columns: repeat(3, 8px); gap: 3px;
}
.nav-logo .logo-dots span {
  width: 8px; height: 8px; border-radius: 50%;
}
.nav-logo .dot-accent { background: var(--teal); }
.nav-logo .dot-green { background: var(--forest); }
.nav-logo .dot-blue { background: var(--ocean); }
.nav-logo .dot-purple { background: var(--lavender); }
.nav-logo .dot-sunset { background: var(--sunset); }
.nav-logo .dot-rose { background: var(--rose); }
.nav-links {
  display: flex; gap: 6px; flex: 1;
}
.nav-links a {
  padding: 8px 14px; border-radius: 8px;
  font-size: 0.88rem; font-weight: 500;
  color: var(--muted); transition: all 0.15s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--fg); background: rgba(0,0,0,0.03);
}
.nav-cta {
  margin-left: auto;
  padding: 9px 20px; border-radius: 8px;
  background: var(--fg); color: #fff;
  font-size: 0.88rem; font-weight: 600;
  transition: all 0.15s; white-space: nowrap;
}
.nav-cta:hover { background: #333; transform: translateY(-1px); }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--fg); margin: 4px 0; transition: 0.2s; }

@media (max-width: 768px) {
  .nav-toggle { display: block; margin-left: auto; }
  .nav-links { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); flex-direction: column; padding: 12px; }
  .nav-links.open { display: flex; }
  .nav-cta { display: none; }
}

/* ─── Layout ─── */
.container { max-width: 900px; margin: 0 auto; padding: 0 24px; }
.wide { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.page-top { padding-top: calc(var(--nav-height) + 40px); }

/* ─── Typography ─── */
h1 { font-family: 'DM Serif Display', serif; font-size: clamp(2.2rem,5vw,3.4rem); line-height: 1.1; }
h2 { font-family: 'DM Serif Display', serif; font-size: clamp(1.6rem,3.5vw,2.2rem); line-height: 1.2; }
h3 { font-family: 'DM Serif Display', serif; font-size: 1.3rem; line-height: 1.3; }
.mono { font-family: 'JetBrains Mono', monospace; }
.muted { color: var(--muted); }
.lead { font-size: 1.1rem; color: var(--muted); line-height: 1.7; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 10px;
  font-family: 'DM Sans', sans-serif; font-size: 0.95rem; font-weight: 600;
  border: none; cursor: pointer; transition: all 0.15s;
}
.btn-primary { background: var(--fg); color: #fff; }
.btn-primary:hover { background: #333; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary { background: #fff; color: var(--fg); border: 1.5px solid var(--border); }
.btn-secondary:hover { border-color: var(--muted); transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #d44a30; transform: translateY(-1px); }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: 12px; }

/* ─── Cards ─── */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px;
  transition: all 0.2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* ─── Axis color system ─── */
.axis-1 { --ax-color: var(--accent); --ax-light: var(--accent-light); }
.axis-2 { --ax-color: var(--green); --ax-light: var(--green-light); }
.axis-3 { --ax-color: var(--blue); --ax-light: var(--blue-light); }
.axis-4 { --ax-color: var(--purple); --ax-light: var(--purple-light); }

/* ─── Quadrant colors (using valence axis colors) ─── */
.quad-dd { --q-color: var(--forest); --q-light: var(--forest-light); }
.quad-dh { --q-color: var(--teal); --q-light: var(--teal-light); }
.quad-id { --q-color: var(--sunset); --q-light: var(--sunset-light); }
.quad-ih { --q-color: var(--rose); --q-light: var(--rose-light); }

/* ─── Pills / Tags ─── */
.pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 12px; border-radius: 20px;
  font-size: 0.78rem; font-weight: 500;
  background: #fff; border: 1px solid var(--border);
}
.letter-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px;
  font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 1.1rem;
  color: #fff;
}

/* ─── Divider ─── */
.divider { width: 60px; height: 3px; border-radius: 2px; background: var(--accent); margin: 32px 0; }

/* ─── Footer ─── */
.footer {
  margin-top: 80px; padding: 48px 0 32px;
  border-top: 1px solid var(--border);
  background: #fff;
}
.footer-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px; margin-bottom: 32px;
}
.footer-col h4 {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); margin-bottom: 12px; font-weight: 600;
}
.footer-col a {
  display: block; font-size: 0.88rem; color: var(--fg);
  padding: 3px 0; transition: color 0.15s;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  font-size: 0.8rem; color: var(--muted);
}

/* ─── Animations ─── */
@keyframes fadeUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes pulse { 0%,100% { transform:scale(1); } 50% { transform:scale(1.3); } }
.fade-up { animation: fadeUp 0.5s ease both; }
.fade-in { animation: fadeIn 0.4s ease both; }
.reveal-animate { animation: fadeUp 0.5s ease both; }

/* ─── Returning user banner ─── */
.return-banner {
  background: var(--blue-light); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; max-width: 600px; margin: 16px auto;
  font-size: 0.88rem; flex-wrap: wrap;
  animation: fadeUp 0.5s ease both;
}
.return-banner a { font-weight: 600; color: var(--blue); }
.return-banner .dismiss { background: none; border: none; cursor: pointer; color: var(--muted); font-size: 1.2rem; padding: 4px; }

/* ─── Utility ─── */
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.gap-1 { gap: 8px; } .gap-2 { gap: 16px; }
.flex { display: flex; } .flex-col { flex-direction: column; } .items-center { align-items: center; } .justify-center { justify-content: center; }
.grid { display: grid; }

/* ─── Responsive ─── */
@media (max-width: 640px) {
  .container, .wide { padding: 0 16px; }
  .card { padding: 18px; }
}