/* PLYVBE landing — dark, restrained, B2B. See specs/active/landing-page.md */

:root {
  --bg: #0a0a0f;
  --bg-alt: #101019;
  --surface: #15151f;
  --border: #23232f;
  --text: #ececf1;
  --text-dim: #9a9aab;
  --accent: #b266ff;        /* restrained violet */
  --accent-2: #5de4d0;      /* subtle teal */
  --accent-soft: rgba(178, 102, 255, 0.14);
  --maxw: 1080px;
  --radius: 14px;
  --display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 760px; }
.center { text-align: center; }

a { color: inherit; text-decoration: none; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #0a0a0f; padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 16px 24px;
  background: rgba(10, 10, 15, 0.72);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.wordmark {
  font-family: var(--display); font-weight: 700; letter-spacing: 0.18em;
  font-size: 1.05rem;
}
.wordmark.small { letter-spacing: 0.2em; color: var(--text-dim); }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--text-dim); font-size: 0.92rem; transition: color 0.18s ease; }
.nav a:hover { color: var(--text); }
.nav-cta {
  color: var(--text) !important;
  border: 1px solid var(--border); padding: 8px 16px; border-radius: 999px;
}
.nav-cta:hover { border-color: var(--accent); }

/* ---------- Hero ---------- */
.hero {
  position: relative; padding: clamp(72px, 14vh, 140px) 0 clamp(56px, 10vh, 104px);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 520px; z-index: 0;
  background:
    radial-gradient(60% 80% at 25% 0%, rgba(178,102,255,0.20), transparent 70%),
    radial-gradient(50% 70% at 85% 10%, rgba(93,228,208,0.10), transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.76rem;
  color: var(--accent-2); margin: 0 0 18px;
}
.hero h1 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(2.1rem, 5.2vw, 3.7rem); line-height: 1.08; letter-spacing: -0.01em;
  margin: 0 0 22px; max-width: 16ch;
}
.accent { color: var(--accent); }
.lede { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--text-dim); max-width: 60ch; margin: 0 0 32px; }

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 0.98rem; padding: 13px 24px; border-radius: 999px;
  border: 1px solid transparent; transition: transform 0.12s ease, background 0.18s ease, border-color 0.18s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #0a0a0f; }
.btn-primary:hover { background: #c488ff; }
.btn-ghost { border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-lg { padding: 16px 34px; font-size: 1.05rem; }

/* ---------- Bands ---------- */
.band { padding: clamp(56px, 9vh, 96px) 0; border-top: 1px solid var(--border); }
.band.alt { background: var(--bg-alt); }

.section-title {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem); line-height: 1.15; letter-spacing: -0.01em;
  margin: 0 0 18px;
}
.section-sub { color: var(--text-dim); font-size: 1.08rem; max-width: 62ch; margin: 0 0 36px; }
.prose { color: var(--text-dim); font-size: 1.12rem; margin: 0; }
.prose strong { color: var(--text); }
.prose em { color: var(--accent-2); font-style: normal; }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 24px; transition: border-color 0.18s ease, transform 0.18s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { font-family: var(--display); font-weight: 500; font-size: 1.15rem; margin: 0 0 10px; }
.card p { color: var(--text-dim); margin: 0; font-size: 0.98rem; }

/* ---------- Final CTA ---------- */
.cta-final {
  padding: clamp(72px, 12vh, 128px) 0; border-top: 1px solid var(--border);
  background:
    radial-gradient(60% 120% at 50% 0%, var(--accent-soft), transparent 70%),
    var(--bg-alt);
}
.cta-final .section-sub { margin-left: auto; margin-right: auto; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.footer-meta { color: var(--text-dim); font-size: 0.86rem; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .cards, .cards.two { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .nav { gap: 14px; }
  .nav a:not(.nav-cta) { display: none; }
  .hero h1 { max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .card { transition: none; }
}