/* ============================================================
   SDR Toolkit — hub landing page (dark, self-contained).
   No inline styles/scripts so the strict site-wide CSP passes.
   ============================================================ */
:root {
  --bg: #0d0b14;
  --bg-soft: #14121f;
  --panel: #181527;
  --panel-2: #1f1b30;
  --border: #2a2640;
  --border-soft: #221f33;
  --fg: #f4f2fb;
  --fg-muted: #b9b2d6;
  --fg-faint: #7c7596;
  --accent: #8b6dff;
  --accent-2: #6d4aff;
  --ok: #34d399;
  --radius: 16px;
  --maxw: 1080px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: Inter, -apple-system, system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.mono { font-family: "JetBrains Mono", ui-monospace, monospace; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ── Nav ── */
.nav { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(10px);
  background: rgba(13,11,20,.72); border-bottom: 1px solid var(--border-soft); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 34px; height: 34px; border-radius: 9px; display: block; }
.brand-name { font-weight: 700; font-size: 17px; letter-spacing: .2px; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a { color: var(--fg-muted); font-size: 14px; font-weight: 500; padding: 8px 14px; border-radius: 8px; transition: color .15s, background .15s; }
.nav-links a:hover { color: var(--fg); background: var(--panel); }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 15px;
  padding: 12px 22px; border-radius: 10px; border: 1px solid transparent; cursor: pointer; transition: transform .12s, box-shadow .2s, background .2s, border-color .2s; }
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: linear-gradient(180deg, var(--accent), var(--accent-2)); color: #fff; box-shadow: 0 8px 24px -8px rgba(124,92,255,.7); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 30px -8px rgba(124,92,255,.85); }
.btn-ghost { background: var(--panel); color: var(--fg); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); }

/* ── Hero ── */
.hero { position: relative; overflow: hidden; padding: 96px 0 72px; }
.hero::before { content: ""; position: absolute; inset: 0;
  background: radial-gradient(900px 520px at 75% -10%, rgba(124,92,255,.22), transparent 60%); pointer-events: none; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(820px 540px at 50% 0%, #000, transparent 78%); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; letter-spacing: .4px;
  color: var(--accent); background: rgba(124,92,255,.12); border: 1px solid rgba(124,92,255,.35); padding: 6px 14px; border-radius: 999px; }
.hero h1 { font-size: clamp(40px, 6vw, 68px); line-height: 1.04; letter-spacing: -1.6px; font-weight: 700; margin: 22px 0 0; max-width: 820px; }
.hero h1 .grad { background: linear-gradient(90deg, #a78bfa, #7c5cff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: clamp(17px, 2.2vw, 21px); color: var(--fg-muted); margin: 22px 0 0; max-width: 620px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

/* ── Section headings ── */
.section { padding: 64px 0; }
.section-head { margin-bottom: 34px; }
.section-head h2 { font-size: clamp(26px, 3.6vw, 34px); letter-spacing: -.8px; font-weight: 700; }
.section-head p { color: var(--fg-muted); margin-top: 8px; font-size: 16px; }

/* ── Tool cards ── */
.tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; }
.tool {
  position: relative; display: flex; flex-direction: column; gap: 14px;
  background: linear-gradient(180deg, var(--panel), var(--bg-soft));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 26px;
  transition: border-color .2s, transform .12s, box-shadow .2s;
}
a.tool:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 18px 40px -22px rgba(124,92,255,.8); }
.tool.soon { opacity: .72; }
.tool-icon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(124,92,255,.14); border: 1px solid rgba(124,92,255,.3); color: var(--accent); }
.tool-icon svg { width: 22px; height: 22px; }
.tool h3 { font-size: 18px; font-weight: 650; display: flex; align-items: center; gap: 10px; }
.tool p { color: var(--fg-muted); font-size: 14.5px; flex: 1; }
.badge { font-size: 11px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; padding: 4px 9px; border-radius: 999px; }
.badge.live { color: var(--ok); background: rgba(52,211,153,.13); border: 1px solid rgba(52,211,153,.35); }
.badge.soon { color: var(--fg-faint); background: rgba(255,255,255,.05); border: 1px solid var(--border); }
.tool-go { font-size: 14px; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; }
.tool-go svg { width: 15px; height: 15px; }

/* ── Feature strip ── */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px;
  border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); padding: 48px 0; }
.feature { display: flex; gap: 14px; }
.feature .fi { width: 38px; height: 38px; flex-shrink: 0; border-radius: 10px; display: grid; place-items: center; background: var(--panel); border: 1px solid var(--border); color: var(--accent); }
.feature .fi svg { width: 19px; height: 19px; }
.feature h4 { font-size: 15.5px; font-weight: 650; }
.feature p { color: var(--fg-muted); font-size: 14px; margin-top: 3px; }

/* ── Footer ── */
.footer { border-top: 1px solid var(--border-soft); padding: 40px 0; margin-top: 24px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.footer .brand-name { font-size: 15px; }
.footer-meta { color: var(--fg-faint); font-size: 13px; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--fg-muted); font-size: 14px; }
.footer-links a:hover { color: var(--fg); }

@media (max-width: 560px) {
  .hero { padding: 60px 0 48px; }
  .nav-links a.hide-sm { display: none; }
  .wrap { padding: 0 16px; }
  /* The minmax(320px,…) floors overflow narrow phones — go single column. */
  .tools, .features { grid-template-columns: 1fr; }
  .hero-cta .btn { flex: 1 1 auto; justify-content: center; }
}