/* ThinkingNative brand tokens — from branding/ logo system */
:root {
  --brand-primary: #0054a6;
  --brand-accent: #009bff;
  --brand-mid: #8fa0b3;
  --brand-light: #e6e9ee;
  --brand-dark: #1a2a44;

  /* Compat aliases used across existing pages */
  --ink: var(--brand-dark);
  --muted: #5f7088;
  --paper: #f4f6f9;
  --line: #c5cdd8;
  --accent: var(--brand-accent);
  --accent-deep: var(--brand-primary);
  --radius: 10px;
  --shadow: 0 18px 50px rgba(26, 42, 68, 0.1);

  --font-sans: "Plus Jakarta Sans", "Segoe UI", system-ui, sans-serif;
  --font-display: "Plus Jakarta Sans", "Segoe UI", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(1100px 560px at 8% -12%, #d9ecff 0%, transparent 55%),
    radial-gradient(900px 480px at 100% 0%, #e8eef6 0%, transparent 50%),
    linear-gradient(180deg, #eef3f9 0%, var(--paper) 42%, #e7edf4 100%);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-deep);
}

.site-nav,
nav.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  width: min(980px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-nav .links,
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 1.5rem;
  align-items: center;
  font-size: 0.9rem;
}

.site-nav .links a,
.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav .links a:hover,
.nav-links a:hover {
  color: var(--ink);
}

.site-nav .links a.cta,
.nav-cta {
  color: var(--accent-deep);
  font-weight: 600;
}

/* Logo lockup in nav / headers */
.brand-link,
a.brand,
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--ink);
  line-height: 0;
}

.brand-link img,
a.brand img,
.brand-logo img {
  display: block;
  height: 2rem;
  width: auto;
}

.brand-link .wordmark,
a.brand .wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  line-height: 1;
}

.brand-link .wordmark .thinking,
a.brand .wordmark .thinking {
  color: var(--brand-primary);
}

.brand-link .wordmark .native,
a.brand .wordmark .native {
  color: var(--brand-accent);
}

.brand-hero {
  display: block;
  width: min(28rem, 100%);
  height: auto;
  margin: 0;
}

.brand-tagline {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.55;
  max-width: 28rem;
}

/* Display headings use brand sans (was Literata) */
h1,
h2,
h3,
.hero .brand,
.hero h2,
.section h3,
.mode h4 {
  font-family: var(--font-display);
}

@keyframes tn-rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}