/* Ironmark marketing site — barebones, deep-space/neon. Static; no build.
   The REAL marketing site is a planned Next build (S6). */
:root {
  --void: #070b16;
  --panel: #0b1322;
  --edge: rgba(34, 211, 238, 0.18);
  --cyan: #22d3ee;
  --sky: #7dd3fc;
  --purple: #a855f7;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --dim: #64748b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: radial-gradient(1200px 600px at 50% -10%, rgba(34,211,238,0.07), transparent 60%), var(--void);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* header — sticky so the logo + nav stay reachable while scrolling */
header.site {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0; border-bottom: 1px solid var(--edge);
  background: rgba(7, 11, 22, 0.9); backdrop-filter: blur(8px);
}
.back-home { color: var(--muted); font-size: 14px; }
.back-home:hover { color: var(--cyan); }
.brand { display: flex; align-items: center; gap: 10px; }
.brand .mark {
  width: 30px; height: 30px; display: grid; place-items: center;
  border: 1px solid rgba(34,211,238,0.5); border-radius: 8px;
  background: rgba(34,211,238,0.1); color: var(--cyan);
  font-weight: 800; box-shadow: 0 0 18px rgba(34,211,238,0.25);
}
.brand .name { font-weight: 800; letter-spacing: 0.04em; }
.brand .name small { color: var(--dim); font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: 0.3em; margin-left: 6px; }
.nav-links { display: flex; align-items: center; gap: 18px; }
/* :not(.btn) so the nav-link color doesn't override the CTA button's dark label */
.nav-links a:not(.btn) { color: var(--muted); font-size: 14px; }
.nav-links a:not(.btn):hover { color: var(--cyan); }

/* buttons */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px; font-weight: 700; font-size: 15px;
  border: 1px solid var(--edge); transition: all .15s ease;
}
.btn-primary {
  /* All stops kept light (cyan → sky → light lavender) so the dark label stays
     readable across the whole button — a cyan→deep-purple fill made the right half
     unreadable. */
  background: linear-gradient(120deg, #22d3ee, #7dd3fc 50%, #c4b5fd);
  color: #06121f; font-weight: 800; border: none;
  box-shadow: 0 0 24px rgba(34,211,238,0.3);
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost { color: var(--text); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* hero */
.hero { padding: 80px 0 56px; text-align: center; }
.hero h1 { font-size: clamp(32px, 6vw, 56px); line-height: 1.1; letter-spacing: -0.02em; font-weight: 800; }
.hero h1 .grad { background: linear-gradient(120deg, var(--cyan), var(--sky), var(--purple)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.sub { color: var(--muted); font-size: clamp(16px, 2.4vw, 20px); max-width: 620px; margin: 22px auto 0; }
.hero .cta { display: flex; gap: 14px; justify-content: center; margin-top: 34px; flex-wrap: wrap; }
.hero .disclaimer { color: var(--dim); font-size: 12px; margin-top: 22px; }

/* features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; padding: 24px 0 72px; }
.card { background: var(--panel); border: 1px solid var(--edge); border-radius: 14px; padding: 22px; }
.card h3 { color: var(--cyan); font-size: 16px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14px; }
/* On mobile, collapse the landing's secondary links — but KEEP the CTA button and
   the legal-page "← Back to home" link visible. */
@media (max-width: 720px) { .features { grid-template-columns: 1fr; } .nav-links a:not(.btn):not(.back-home) { display: none; } }

/* legal pages */
.legal { padding: 56px 0 80px; }
.legal h1 { font-size: 32px; margin-bottom: 6px; }
.legal .updated { color: var(--dim); font-size: 13px; margin-bottom: 28px; }
.legal h2 { color: var(--cyan); font-size: 18px; margin: 28px 0 8px; }
.legal p, .legal li { color: var(--muted); font-size: 15px; margin-bottom: 10px; }
.legal ul { padding-left: 22px; }
.legal .callout { background: var(--panel); border: 1px solid var(--edge); border-radius: 12px; padding: 16px 18px; margin: 20px 0; color: var(--text); font-size: 14px; }

/* footer */
footer.site { border-top: 1px solid var(--edge); padding: 28px 0; color: var(--dim); font-size: 13px; }
footer.site .row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
footer.site a { color: var(--muted); }
footer.site a:hover { color: var(--cyan); }