/* ───────────────────────────────────────────────────────────────────
 * site-chrome.css — shared nav + theme toggle for all Stack sites
 * Token system mirrors apps/stackx-web/products-finx.html.
 * Pages opt in by including this file and dropping the markup
 * placeholders <div id="site-nav"></div> + <div id="site-theme"></div>.
 * ─────────────────────────────────────────────────────────────────── */

html {
  scroll-behavior: smooth;
  /* Sticky nav is ~70px tall — leave room so anchored sections aren't hidden behind it. */
  scroll-padding-top: 80px;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

:root {
  --sx-ink: #0a0a10; --sx-ink-2: #11121a; --sx-ink-3: #0d0e15;
  --sx-line: rgba(255,255,255,0.10); --sx-line-2: rgba(255,255,255,0.06);
  --sx-fg: #fff; --sx-fg-75: rgba(255,255,255,0.75); --sx-fg-55: rgba(255,255,255,0.55); --sx-fg-35: rgba(255,255,255,0.35);
  --sx-surface-soft: rgba(255,255,255,0.04);
  --sx-surface-soft-strong: rgba(255,255,255,0.08);
  --sx-switcher-bg: rgba(20,20,30,0.85);
  --sx-nav-bg: rgba(10,10,16,0.7);
  --sx-on-accent: #0a0a14;
  --sx-emerald: oklch(0.72 0.18 155);
  --sx-teal:    oklch(0.75 0.14 210);
  --sx-violet:  oklch(0.65 0.20 300);
  --sx-sans: 'Space Grotesk', sans-serif;
  --sx-mono: 'JetBrains Mono', monospace;
  --sx-accent: var(--sx-emerald);
  --sx-accent-soft: oklch(0.72 0.18 155 / 0.18);
  --sx-accent-faint: oklch(0.72 0.18 155 / 0.06);
}

html[data-theme="light-warm"] {
  --sx-ink: #f6f1e8; --sx-ink-2: #ede5d4; --sx-ink-3: #f0eadd;
  --sx-line: rgba(28,24,20,0.14); --sx-line-2: rgba(28,24,20,0.07);
  --sx-fg: #1c1814; --sx-fg-75: rgba(28,24,20,0.75); --sx-fg-55: rgba(28,24,20,0.58); --sx-fg-35: rgba(28,24,20,0.32);
  --sx-surface-soft: rgba(28,24,20,0.04);
  --sx-surface-soft-strong: rgba(28,24,20,0.08);
  --sx-switcher-bg: rgba(246,241,232,0.85);
  --sx-nav-bg: rgba(246,241,232,0.78);
  --sx-on-accent: #f6f1e8;
  --sx-emerald: oklch(0.50 0.16 155);
  --sx-teal:    oklch(0.55 0.14 210);
  --sx-violet:  oklch(0.48 0.20 300);
  --sx-accent-soft: oklch(0.50 0.16 155 / 0.18);
  --sx-accent-faint: oklch(0.50 0.16 155 / 0.07);
}

html[data-theme="light-cool"] {
  --sx-ink: #ffffff; --sx-ink-2: #f4f5f7; --sx-ink-3: #fafafc;
  --sx-line: rgba(14,15,20,0.10); --sx-line-2: rgba(14,15,20,0.05);
  --sx-fg: #0e0f14; --sx-fg-75: rgba(14,15,20,0.75); --sx-fg-55: rgba(14,15,20,0.58); --sx-fg-35: rgba(14,15,20,0.32);
  --sx-surface-soft: rgba(14,15,20,0.03);
  --sx-surface-soft-strong: rgba(14,15,20,0.07);
  --sx-switcher-bg: rgba(255,255,255,0.85);
  --sx-nav-bg: rgba(255,255,255,0.78);
  --sx-on-accent: #ffffff;
  --sx-emerald: oklch(0.52 0.16 155);
  --sx-teal:    oklch(0.55 0.14 210);
  --sx-violet:  oklch(0.50 0.21 300);
  --sx-accent-soft: oklch(0.52 0.16 155 / 0.16);
  --sx-accent-faint: oklch(0.52 0.16 155 / 0.06);
}

/* HealthX pages flip accent to teal */
body[data-product="healthx"] {
  --sx-accent: var(--sx-teal);
  --sx-accent-soft: oklch(0.75 0.14 210 / 0.18);
  --sx-accent-faint: oklch(0.75 0.14 210 / 0.06);
}
html[data-theme="light-warm"] body[data-product="healthx"] {
  --sx-accent-soft: oklch(0.55 0.14 210 / 0.18);
  --sx-accent-faint: oklch(0.55 0.14 210 / 0.07);
}
html[data-theme="light-cool"] body[data-product="healthx"] {
  --sx-accent-soft: oklch(0.55 0.14 210 / 0.16);
  --sx-accent-faint: oklch(0.55 0.14 210 / 0.06);
}

/* ── Theme toggle (bottom-center, all viewports) ────────────── */
.sx-theme-toggle {
  position: fixed; bottom: 18px; left: 50%; z-index: 1000;
  transform: translateX(-50%);
  background: var(--sx-switcher-bg);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  border: 1px solid var(--sx-line); border-radius: 999px;
  padding: 4px; display: flex; gap: 2px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.30);
}
.sx-theme-toggle button {
  width: 30px; height: 30px; border-radius: 50%; border: 0; padding: 0;
  background: transparent; color: var(--sx-fg-55); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background-color .2s ease, color .2s ease;
}
.sx-theme-toggle button:hover { color: var(--sx-fg); }
.sx-theme-toggle button[aria-pressed="true"] {
  background: var(--sx-fg); color: var(--sx-ink);
}
.sx-theme-toggle svg { width: 14px; height: 14px; display: block; }

/* ── Nav ─────────────────────────────────────────────────────── */
nav.sx-nav, .sx-nav {
  /* Defensive overrides — some legacy pages style the bare `nav` tag with
     display:flex / fixed positioning / fixed height. Reset to known state. */
  display: block;
  position: -webkit-sticky;
  position: sticky;
  top: 0; left: auto; right: auto;
  width: 100%; height: auto; min-height: 0; padding: 0;
  z-index: 50;
  background: var(--sx-nav-bg);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--sx-line);
  font-family: var(--sx-sans);
}
.sx-nav-inner {
  width: 100%; max-width: 1280px; margin: 0 auto; padding: 18px 40px;
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px; align-items: center;
  color: var(--sx-fg);
}
.sx-nav-inner > .sx-brand        { justify-self: start; }
.sx-nav-inner > .sx-nav-links    { justify-self: center; }
.sx-nav-inner > .sx-nav-cta-wrap { justify-self: end; }
.sx-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: inherit;
}
.sx-brand-mark { overflow: visible; flex-shrink: 0; color: var(--sx-fg); }
.sx-brand-mark .accent-dot { fill: var(--sx-accent); }
.sx-brand-text { display: flex; flex-direction: column; line-height: 1; }
.sx-brand-name { font-size: 16px; font-weight: 500; letter-spacing: -0.3px; color: var(--sx-fg); }
.sx-brand-by { font-family: var(--sx-mono); font-size: 10px; letter-spacing: 1.5px; color: var(--sx-fg-35); text-transform: uppercase; margin-top: 4px; }
.sx-brand-by::before { content: '· '; }

.sx-nav-links { display: flex; gap: 28px; justify-content: center; align-items: center; list-style: none; padding: 0; margin: 0; }
.sx-nav-links a, .sx-nav-trigger {
  color: var(--sx-fg-55); font-size: 13.5px; text-decoration: none;
  transition: color .2s; background: transparent; border: 0;
  font-family: var(--sx-sans); cursor: pointer; padding: 0;
  display: inline-flex; align-items: center; gap: 4px;
}
.sx-nav-links a:hover, .sx-nav-trigger:hover { color: var(--sx-fg); }
.sx-nav-disabled {
  color: var(--sx-fg-35);
  font-size: 13.5px; font-family: var(--sx-sans);
  cursor: not-allowed;
}
.sx-nav-trigger .caret { transition: transform .2s; font-size: 10px; }
.sx-nav-trigger[aria-expanded="true"] .caret { transform: rotate(180deg); }
.sx-nav-trigger[aria-expanded="true"] { color: var(--sx-fg); }

.sx-products { position: relative; }
.sx-products-menu {
  position: absolute; top: calc(100% + 12px); left: 50%; transform: translateX(-50%);
  background: var(--sx-ink-2); border: 1px solid var(--sx-line); border-radius: 12px;
  padding: 8px; min-width: 280px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5);
  display: none; flex-direction: column; gap: 2px;
}
.sx-products-menu.open { display: flex; }
.sx-products-menu a {
  display: flex; flex-direction: column; gap: 2px;
  padding: 10px 12px; border-radius: 8px;
  color: var(--sx-fg); text-decoration: none;
  transition: background .15s;
}
.sx-products-menu a:hover { background: var(--sx-surface-soft-strong); }
.sx-products-menu a .product-name {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 500; letter-spacing: -0.2px;
}
.sx-products-menu a .product-dot {
  width: 8px; height: 8px; border-radius: 4px;
}
.sx-products-menu a.finx    .product-dot { background: var(--sx-emerald); }
.sx-products-menu a.healthx .product-dot { background: var(--sx-teal); }
.sx-products-menu a .product-tag {
  font-family: var(--sx-mono); font-size: 10px; letter-spacing: 1px;
  color: var(--sx-fg-55); text-transform: uppercase; padding-left: 16px;
}

.sx-nav-cta-wrap { display: flex; align-items: center; gap: 12px; }
.sx-nav-link-ghost {
  color: var(--sx-fg-75); font-size: 13px;
  text-decoration: none; font-family: var(--sx-sans);
  padding: 8px 4px; transition: color .2s;
}
.sx-nav-link-ghost:hover { color: var(--sx-fg); }
.sx-nav-cta {
  background: var(--sx-accent); color: var(--sx-on-accent);
  padding: 9px 16px; border-radius: 999px; text-decoration: none;
  font-family: var(--sx-sans); font-size: 13px; font-weight: 600; letter-spacing: -0.1px;
  border: 0; cursor: pointer;
}
.sx-nav-cta:hover { opacity: 0.88; }

/* Active state for current page link */
.sx-nav-links a[aria-current="page"] { color: var(--sx-fg); }
.sx-products-menu a[aria-current="page"] { background: var(--sx-accent-faint); }

.sx-nav-mobile-btn { display: none; }

/* ── Mobile: brand top-left, CTA top-right, links centered row 2 ─ */
@media (max-width: 720px) {
  .sx-nav-inner {
    padding: 14px 20px 10px;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    column-gap: 12px;
    row-gap: 6px;
    align-items: center;
  }
  .sx-brand { grid-column: 1; grid-row: 1; justify-self: start; }
  .sx-brand-by { display: none; }
  .sx-nav-cta-wrap { grid-column: 2; grid-row: 1; justify-self: end; }
  .sx-nav-links {
    grid-column: 1 / -1; grid-row: 2;
    justify-content: center;
    gap: 18px;
    padding: 0;
    flex-wrap: nowrap;
  }
  .sx-nav-links a, .sx-nav-trigger { font-size: 13px; }
  .sx-products-menu {
    left: 50%; right: auto; transform: translateX(-50%);
    min-width: 220px; top: calc(100% + 8px);
  }
}