/* Old Money — shared styles (tech / AI aesthetic v2)
   Dark, high-signal, model-card energy. */

:root {
  --bg: #0A0A0B;
  --bg-1: #111113;
  --bg-2: #17171A;
  --bg-3: #1E1E22;
  --line: rgba(255,255,255,0.08);
  --line-2: rgba(255,255,255,0.14);
  --line-3: rgba(255,255,255,0.24);
  --fg: #F5F5F4;
  --fg-dim: #A8A8A5;
  --fg-mute: #6C6C68;
  --accent: oklch(82% 0.19 142);
  --accent-2: oklch(72% 0.17 260);
  --warn: oklch(78% 0.18 60);
  --accent-rgb: 138, 233, 170;

  --display: "Space Grotesk", "Inter Tight", ui-sans-serif, system-ui, sans-serif;
  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, monospace;

  --max: 1280px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px),
    radial-gradient(ellipse at 20% -10%, rgba(var(--accent-rgb), 0.08), transparent 50%);
  background-size: 56px 56px, 56px 56px, auto;
}

a { color: var(--fg); text-decoration: none; }
a:hover { color: var(--accent); }

::selection { background: var(--accent); color: var(--bg); }

/* ---------- Nav ---------- */
.nav {
  border-bottom: 1px solid var(--line);
  background: rgba(10,10,11,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 20;
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--fg); }
.brand-glyph {
  width: 26px; height: 26px; display: block;
}
.brand-mark {
  font-family: var(--display); font-weight: 600; font-size: 16px;
  letter-spacing: -0.01em;
}
.brand-tag {
  font-family: var(--mono); font-size: 10px;
  color: var(--fg-mute); letter-spacing: 0.02em;
  padding: 3px 8px; border: 1px solid var(--line-2); border-radius: 4px;
}
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  font-family: var(--mono); font-size: 12px;
  color: var(--fg-dim); padding: 8px 14px;
  border-radius: 6px;
}
.nav-links a:hover { background: var(--bg-2); color: var(--fg); }
.nav-links a.active { background: var(--bg-2); color: var(--accent); }
.nav-cta {
  font-family: var(--mono); font-size: 12px;
  padding: 8px 14px; border-radius: 6px;
  background: var(--accent); color: var(--bg);
  display: inline-flex; align-items: center; gap: 6px;
}
.nav-cta:hover { background: var(--fg); color: var(--bg); }
.nav-toggle {
  display: none;
  background: transparent; border: 1px solid var(--line-2);
  border-radius: 6px; padding: 8px;
  width: 36px; height: 36px;
  cursor: pointer;
}
.nav-toggle span {
  display: block; width: 18px; height: 1.5px;
  background: var(--fg); margin: 3px auto;
  transition: transform 0.2s, opacity 0.2s;
}
.nav.is-open .nav-toggle span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav.is-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.is-open .nav-toggle span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }
.nav-links-cta { display: none; }

/* ---------- Shell ---------- */
.shell { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Eyebrow */
.eyebrow {
  font-family: var(--mono); font-size: 11px;
  color: var(--accent); letter-spacing: 0.02em;
  display: inline-flex; align-items: center; gap: 8px;
}
.eyebrow::before {
  content: ""; width: 6px; height: 6px; background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.6);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; } 50% { opacity: 0.4; }
}

/* Mono labels */
.mono-label {
  font-family: var(--mono); font-size: 11px;
  color: var(--fg-mute); letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 20px;
  font-family: var(--mono); font-size: 13px;
  text-decoration: none; cursor: pointer;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--bg);
  border-radius: 8px;
  transition: all 140ms ease;
  font-weight: 500;
  white-space: nowrap;
}
.btn:hover { background: var(--fg); border-color: var(--fg); color: var(--bg); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--line-2); }
.btn-ghost:hover { background: var(--bg-2); color: var(--accent); border-color: var(--accent); transform: translateY(-1px); }

/* Inputs */
.field {
  font-family: var(--mono); font-size: 14px;
  color: var(--fg); background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: 8px; padding: 13px 16px; width: 100%;
  outline: none; transition: border-color 140ms ease;
}
.field:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.12); }
.field::placeholder { color: var(--fg-mute); }

/* Section header */
.sec-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin: 0 0 28px; padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.sec-head h2 {
  font-family: var(--display); font-weight: 500;
  font-size: 28px; margin: 0; letter-spacing: -0.02em;
}
.sec-head .mono-label { padding-top: 10px; }

/* Card */
.card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  transition: border-color 140ms ease, background 140ms ease;
}
.card:hover { border-color: var(--line-2); }

/* Tag pill */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10px;
  color: var(--fg-dim);
  padding: 4px 9px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
}
.pill.accent { color: var(--accent); border-color: rgba(var(--accent-rgb), 0.35); background: rgba(var(--accent-rgb), 0.06); }
.pill.warn { color: var(--warn); border-color: color-mix(in oklch, var(--warn) 35%, transparent); }
a.pill { text-decoration: none; cursor: pointer; transition: color 120ms ease, border-color 120ms ease, background 120ms ease, transform 120ms ease; }
a.pill:hover { color: var(--accent); border-color: rgba(var(--accent-rgb), 0.45); background: rgba(var(--accent-rgb), 0.08); transform: translateY(-1px); }
a.pill:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Footer */
.foot {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding: 48px 0 32px;
  font-family: var(--mono); font-size: 12px;
  color: var(--fg-mute);
}
.foot .shell { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.foot h4 {
  font-family: var(--mono); font-size: 11px;
  color: var(--fg); margin: 0 0 14px;
  letter-spacing: 0.02em;
}
.foot a { color: var(--fg-dim); display: block; margin-bottom: 8px; }
.foot a:hover { color: var(--accent); }
.foot .disclaim { max-width: 48ch; line-height: 1.6; font-family: var(--sans); }
.foot .disclaim.compliance { margin-top: 14px; font-size: 11px; color: var(--fg-mute); }
.colophon {
  grid-column: 1 / -1;
  margin-top: 16px;
  border-top: 1px solid var(--line); padding-top: 22px;
  display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11px; color: var(--fg-mute); letter-spacing: 0.02em;
}
.colophon .foot-legal { display: inline-flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.colophon .foot-legal a { color: var(--fg-dim); display: inline; margin: 0; }
.colophon .foot-legal a:hover { color: var(--accent); }
.colophon .status-dot {
  display: inline-flex; align-items: center; gap: 8px;
}
.colophon .status-dot::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px rgba(var(--accent-rgb), 0.6);
}

/* Legal pages (privacy / terms) */
.legal {
  max-width: 760px; margin: 0 auto;
  padding: 72px 24px 96px;
}
.legal h1 {
  font-family: var(--display); font-weight: 500;
  font-size: clamp(40px, 5vw, 64px); letter-spacing: -0.03em;
  line-height: 1.02; margin: 20px 0 12px;
}
.legal .updated {
  font-family: var(--mono); font-size: 11px;
  color: var(--fg-mute); letter-spacing: 0.02em;
  margin-bottom: 40px;
}
.legal h2 {
  font-family: var(--display); font-weight: 500;
  font-size: 22px; letter-spacing: -0.015em;
  margin: 40px 0 14px; padding-top: 24px;
  border-top: 1px solid var(--line);
}
.legal p, .legal ul {
  color: var(--fg-dim); font-size: 15px; line-height: 1.65;
  margin: 0 0 14px;
}
.legal ul { padding-inline-start: 20px; }
.legal ul li { margin-bottom: 6px; }
.legal strong { color: var(--fg); font-weight: 600; }
.legal a { color: var(--accent); border-bottom: 1px dotted rgba(var(--accent-rgb), 0.4); }
.legal a:hover { border-bottom-color: var(--accent); }
.legal .compliance-note {
  margin: 32px 0;
  padding: 18px 20px;
  border: 1px solid var(--line-2); border-radius: 10px;
  background: rgba(var(--accent-rgb), 0.04);
  font-family: var(--mono); font-size: 13px; color: var(--fg);
  line-height: 1.55;
}

/* Placeholder */
.placeholder {
  background:
    repeating-linear-gradient(45deg,
      rgba(255,255,255,0.04) 0 10px,
      rgba(255,255,255,0.01) 10px 20px);
  border: 1px solid var(--line-2);
  border-radius: 8px;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 10px;
  color: var(--fg-mute); letter-spacing: 0.05em; text-transform: uppercase;
  padding: 12px;
}

/* Grid backdrop for heros */
.grid-bg {
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Mono counter strip */
.ticker {
  display: flex; gap: 32px; overflow: hidden;
  font-family: var(--mono); font-size: 11px;
  color: var(--fg-mute);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
  white-space: nowrap;
}
.ticker span { display: inline-flex; align-items: center; gap: 8px; }
.ticker b { color: var(--fg); font-weight: 500; }
.ticker .up { color: var(--accent); }

@media (max-width: 900px) {
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute; top: 100%; inset-inline: 0;
    flex-direction: column; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 16px 16px;
  }
  .nav.is-open .nav-links { display: flex; }
  .nav-links a { padding: 12px 14px; font-size: 14px; }
  .nav-links-cta {
    display: inline-flex !important; align-items: center; justify-content: center;
    margin-top: 8px; padding: 12px 14px !important;
    background: var(--accent); color: var(--bg) !important;
    border-radius: 6px;
  }
  .nav-links-cta:hover { background: var(--fg); color: var(--bg) !important; }
  .foot .shell { grid-template-columns: 1fr 1fr; }
  .foot .disclaim { grid-column: 1 / -1; }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; inset-inline-start: 8px; top: -40px;
  background: var(--fg); color: var(--bg); padding: 8px 12px;
  border-radius: 6px; z-index: 1000; text-decoration: none;
  font-family: var(--mono); font-size: 13px;
}
.skip-link:focus { top: 8px; outline: 2px solid var(--accent); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.btn:focus-visible,
.field:focus-visible,
.nav-links a:focus-visible,
.nav-cta:focus-visible,
.tool:focus-visible,
.pill:focus-visible,
.foot a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.form-error {
  color: #ff6b6b;
  font-family: var(--mono);
  font-size: 12px;
  margin-top: 8px;
  margin-bottom: 0;
}
.field[aria-invalid="true"] {
  border-color: #ff6b6b;
}