/* TechnicalIQ — public site. Dark, high-contrast, neon-mint (mirrors app/lib/core/theme/app_theme.dart). */
:root {
  --bg: #0A0C10;
  --surface: #141A22;
  --surface-alt: #1B222C;
  --border: #242D38;
  --accent: #16E29B;
  --accent-2: #13B7C4;
  --buy: #16C784;
  --sell: #EA3943;
  --warn: #F0B90B;
  --text: #EAECEF;
  --muted: #8A97A6;
  --ink: #04120C;
  --radius: 14px;
  --maxw: 1120px;
  --grad: linear-gradient(135deg, #16E29B 0%, #13B7C4 100%);
  --font: "Segoe UI", Roboto, system-ui, -apple-system, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { opacity: .85; }
img { max-width: 100%; display: block; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; font-weight: 800; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.3rem); }
p { margin: 0 0 1rem; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.center { text-align: center; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.4rem; border-radius: 10px; font-weight: 700; font-size: .98rem;
  border: 1px solid transparent; cursor: pointer; transition: transform .12s ease, opacity .12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--grad); color: var(--ink); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-sm { padding: .55rem 1rem; font-size: .9rem; }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.5rem;
  padding: 14px 20px; max-width: var(--maxw); margin: 0 auto;
  backdrop-filter: blur(8px);
}
.site-header::before {
  content: ""; position: absolute; inset: 0; background: rgba(10,12,16,.72);
  border-bottom: 1px solid var(--border); z-index: -1;
}
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 800; font-size: 1.15rem; color: var(--text); letter-spacing: -.02em; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 7px; background: var(--grad);
  display: grid; place-items: center; color: var(--ink); font-size: .85rem; font-weight: 900;
}
.nav { display: flex; gap: 1.4rem; margin-left: auto; }
.nav a { color: var(--muted); font-weight: 600; font-size: .95rem; }
.nav a:hover, .nav a.active { color: var(--text); }
.header-cta { margin-left: 1rem; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 1.5rem; margin-left: auto; cursor: pointer; }

/* ---- Hero ---- */
.hero { padding: clamp(3rem, 8vw, 6rem) 0 3rem; position: relative; overflow: hidden; }
.hero::after {
  content: ""; position: absolute; top: -30%; right: -10%; width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(22,226,155,.18), transparent 65%); filter: blur(20px); z-index: 0;
}
.hero .container { position: relative; z-index: 1; max-width: 820px; }
.eyebrow {
  display: inline-block; padding: .35rem .8rem; border: 1px solid var(--border); border-radius: 999px;
  color: var(--accent); font-size: .8rem; font-weight: 700; letter-spacing: .03em; margin-bottom: 1.2rem;
}
.hero p.lead { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--muted); max-width: 640px; }
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.8rem; }
.hero-note { margin-top: 1rem; font-size: .85rem; color: var(--muted); }

/* ---- Sections ---- */
section { padding: clamp(3rem, 7vw, 5rem) 0; }
.section-head { max-width: 640px; margin-bottom: 2.5rem; }
.section-head.center { margin-left: auto; margin-right: auto; }

/* ---- Cards / grids ---- */
.grid { display: grid; gap: 1.1rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem;
}
.card h3 { font-size: 1.15rem; }
.card .ico { width: 42px; height: 42px; border-radius: 10px; background: var(--surface-alt); display: grid; place-items: center; margin-bottom: 1rem; font-size: 1.3rem; }
.step-num { color: var(--accent); font-weight: 800; font-size: .85rem; letter-spacing: .05em; }

/* ---- Markets pills ---- */
.pill { display: inline-flex; align-items: center; gap: .4rem; padding: .3rem .7rem; border-radius: 999px; background: var(--surface-alt); border: 1px solid var(--border); font-size: .85rem; font-weight: 600; }

/* ---- Pricing ---- */
.price-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; max-width: 760px; margin: 0 auto; }
.price-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; position: relative; }
.price-card.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.price-badge { position: absolute; top: -12px; right: 20px; background: var(--grad); color: var(--ink); font-size: .72rem; font-weight: 800; padding: .25rem .7rem; border-radius: 999px; }
.price { font-size: 2.4rem; font-weight: 800; letter-spacing: -.03em; }
.price small { font-size: .95rem; color: var(--muted); font-weight: 600; }
.price-card ul { list-style: none; padding: 0; margin: 1.2rem 0; }
.price-card li { padding: .35rem 0 .35rem 1.6rem; position: relative; color: var(--text); }
.price-card li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }

/* ---- Legal / long-form ---- */
.prose { max-width: 760px; margin: 0 auto; }
.prose h2 { margin-top: 2.2rem; font-size: 1.4rem; }
.prose h3 { margin-top: 1.5rem; font-size: 1.1rem; }
.prose ul { padding-left: 1.2rem; }
.prose li { margin: .3rem 0; }
.updated { color: var(--muted); font-size: .9rem; }

/* ---- Disclaimer strip ---- */
.disclaimer-strip { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.2rem; display: flex; gap: .7rem; align-items: flex-start; color: var(--muted); font-size: .9rem; }
.disclaimer-strip .ico { color: var(--warn); }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--border); margin-top: 2rem; padding: 3rem 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer-grid h4 { color: var(--text); font-size: .95rem; margin: 0 0 .8rem; }
.footer-grid a { display: block; color: var(--muted); font-weight: 500; padding: .2rem 0; }
.footer-grid a:hover { color: var(--text); }
.footer-disclaimer { color: var(--muted); font-size: .82rem; border-top: 1px solid var(--border); padding-top: 1.5rem; }
.footer-legal { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin-top: 1rem; color: var(--muted); font-size: .82rem; }

/* ---- Responsive ---- */
@media (max-width: 820px) {
  .nav, .header-cta { display: none; }
  .nav-toggle { display: block; }
  .site-header.open { flex-wrap: wrap; }
  .site-header.open .nav { display: flex; flex-direction: column; width: 100%; gap: .4rem; margin: 1rem 0 .4rem; }
  .site-header.open .header-cta { display: inline-flex; }
  .grid-3, .grid-2, .price-grid, .footer-grid { grid-template-columns: 1fr; }
}