/* ---------- Tokens (mirrors apps/web DESIGN.md) ---------- */
:root {
  --color-bg: #f7f7f5;
  --color-surface: #ffffff;
  --color-surface-2: #fbfbfa;
  --color-surface-inset: #f1f1ef;
  --color-border: #e6e4df;
  --color-border-strong: #d7d3cc;
  --color-text: #1c1b19;
  --color-text-muted: #6b6862;
  --color-text-subtle: #706d66;
  --color-accent: #2e6fc7;
  --color-accent-strong: #245aa3;
  --color-accent-fg: #ffffff;
  --color-accent-text: #2e6fc7;
  --brand-orange: #f26522;
  --color-ok: #2f7d4f;
  --color-warning: #b57d18;
  --color-danger: #b4453a;

  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-5: 20px; --space-6: 24px; --space-8: 32px; --space-10: 40px; --space-12: 56px;

  --r-sm: 5px; --r-md: 9px; --r-lg: 14px; --r-xl: 18px; --r-pill: 999px;
  --r-flick: 26px 26px 26px 6px;

  --shadow-sm: 0 1px 2px rgba(28,27,25,.06), 0 1px 3px rgba(28,27,25,.04);
  --shadow-md: 0 2px 6px rgba(28,27,25,.07), 0 8px 24px -8px rgba(28,27,25,.12);
  --shadow-lg: 0 12px 40px -12px rgba(28,27,25,.22);

  /* One typeface site-wide — body matches the display face used for
     headings (see landing/index.html). Only --font-mono stays separate,
     for tabular numeric figures. */
  --font-display: "Poppins", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font: var(--font-display);
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;

  --text-small: 12px;
  --text-micro: 10px;
  --text-lead: 16px;
  --text-hero: clamp(36px, 5vw, 58px);
  --text-section-title: clamp(26px, 3.2vw, 34px);
  --feature-num-tint: 24%;

  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #141416;
    --color-surface: #1c1c1f;
    --color-surface-2: #1a1a1d;
    --color-surface-inset: #171719;
    --color-border: #2e2e34;
    --color-border-strong: #3d3d45;
    --color-text: #ededec;
    --color-text-muted: #a3a19b;
    --color-text-subtle: #8a867d;
    /* Brand fills stay at their light-mode depth so white button text
       keeps AA contrast — only surfaces and text lighten for dark mode. */
    --color-accent: #2e6fc7;
    --color-accent-strong: #245aa3;
    --color-accent-fg: #ffffff;
    --color-accent-text: #7aa8e6;
    --brand-orange: #ff7b3d;
    --color-ok: #2f7d4f;
    --color-warning: #d9a53d;
    --color-danger: #c7746b;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4), 0 1px 3px rgba(0,0,0,.3);
    --shadow-md: 0 2px 6px rgba(0,0,0,.45), 0 8px 24px -8px rgba(0,0,0,.55);
    --shadow-lg: 0 12px 40px -12px rgba(0,0,0,.7);
    --feature-num-tint: 100%;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font);
  font-size: var(--text-lead);
  font-weight: 450;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; }
.wrap { max-width: 1080px; margin: 0 auto; padding-inline: var(--space-5); }

/* ---------- Header ---------- */
header.site {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(16px) saturate(1.6);
  background: color-mix(in srgb, var(--color-bg) 78%, transparent);
  border-bottom: 1px solid var(--color-border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: var(--space-5); }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand-logo { height: 28px; width: auto; display: block; }

nav.primary { display: flex; align-items: center; gap: var(--space-6); }
nav.primary a { font-size: 14px; font-weight: 550; color: var(--color-text-muted); text-decoration: none; }
nav.primary a:hover { color: var(--color-text); }
.nav-actions { display: flex; align-items: center; gap: var(--space-3); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  border-radius: var(--r-pill); font-family: var(--font); font-size: 14px; font-weight: 620;
  padding: 10px 20px; text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: background .15s ease, border-color .15s ease; white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-accent) 95%, white), var(--color-accent));
  color: var(--color-accent-fg);
  box-shadow: 0 1px 0 color-mix(in srgb, white 25%, transparent) inset, var(--shadow-sm);
}
.btn-primary:hover { background: linear-gradient(180deg, var(--color-accent), var(--color-accent-strong)); }
.btn-secondary { background: var(--color-surface); color: var(--color-text); border-color: var(--color-border-strong); }
.btn-secondary:hover { border-color: var(--color-accent); color: var(--color-accent-text); }
.btn-ghost { background: transparent; color: var(--color-text-muted); }
.btn-ghost:hover { color: var(--color-text); }
.btn-lg { padding: 13px 24px; }

/* ---------- Footer (fixed dark ink band, like the CTA band — not theme-swapped) ---------- */
:root { --footer-bg: #10151f; --footer-text: #f2f3f5; --footer-muted: #a7adba; --footer-border: #272e3d; }
footer.site { background: var(--footer-bg); padding: var(--space-10) 0 var(--space-6); }
.foot-top { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-8); flex-wrap: wrap; margin-bottom: var(--space-10); }
.foot-brand p { font-size: var(--text-small); color: var(--footer-muted); max-width: 260px; margin: var(--space-3) 0 0; }
.foot-cols { display: flex; gap: var(--space-10); flex-wrap: wrap; }
.foot-col h5 { font-size: 11px; font-weight: 620; letter-spacing: .05em; text-transform: uppercase; color: var(--footer-muted); margin: 0 0 var(--space-3); }
.foot-col a { display: block; font-size: var(--text-small); color: var(--footer-text); opacity: .82; text-decoration: none; margin-bottom: var(--space-2); }
.foot-col a:hover { opacity: 1; color: var(--color-accent-text); }
.foot-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-3); padding-top: var(--space-6); border-top: 1px solid var(--footer-border); }
.foot-copy { font-size: var(--text-small); color: var(--footer-muted); }

/* ---------- Mobile nav ---------- */
.menu-btn {
  display: none; width: 40px; height: 40px; border-radius: var(--r-md, 10px);
  align-items: center; justify-content: center;
  background: var(--color-surface); border: 1px solid var(--color-border-strong); color: var(--color-text); cursor: pointer;
}
.menu-btn svg { width: 20px; height: 20px; }
.nav-mobile-only { display: none; }

@media (max-width: 720px) {
  nav.primary, .nav-actions .btn-secondary, .nav-actions .btn-primary, .nav-actions .btn-ghost { display: none; }
  .menu-btn { display: inline-flex; }
}
body.menu-open nav.primary {
  display: flex; position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: flex-start;
  gap: 0; background: var(--color-bg); border-bottom: 1px solid var(--color-border); padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow-lg); z-index: 39; max-height: calc(100vh - 64px); overflow-y: auto;
}
body.menu-open nav.primary a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--color-border); }
body.menu-open .nav-mobile-only { display: block; }
body.menu-open nav.primary a.nav-mobile-only.btn-primary {
  border-bottom: none; margin-top: var(--space-3); text-align: center; padding: 12px;
}