/* =========================================================================
   zerovectorapps.com — studio landing page
   ZVA corporate scope: pure black, Oxanium display, red→gold used sparingly.
   Calm and plain — a studio page, not a sales funnel.
   Depends on css/colors_and_type.css for design tokens.
   ========================================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; background: var(--zva-black); color: var(--fg1);
  font-family: var(--font-body); -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
.wrap { width: min(100% - 48px, 1080px); margin-inline: auto; }
.seam { height: 3px; background: var(--zva-gradient); width: 100%; }

/* ---- nav ---- */
header.nav {
  position: sticky; top: 0; z-index: 30;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand img { width: 30px; height: 30px; display: block; }
.brand .name {
  font-family: var(--font-display); font-weight: 700; font-size: 15px;
  letter-spacing: 3px; text-transform: uppercase; color: var(--fg1);
}
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { font-size: 14px; font-weight: 600; color: var(--fg2); transition: color var(--dur-fast) var(--ease-out); }
.nav-links a:hover { color: var(--fg1); }

/* ---- hero ---- */
.hero { padding: 124px 0 88px; position: relative; }
.hero-glow {
  position: absolute; top: -140px; left: 50%; transform: translateX(-50%);
  width: 720px; height: 720px; pointer-events: none; z-index: 0;
  background: radial-gradient(circle, rgba(225,66,60,0.11) 0%, rgba(242,202,48,0.05) 38%, transparent 66%);
}
.hero .wrap { position: relative; z-index: 1; }
.hero-mark { width: 60px; height: 60px; margin-bottom: 34px; display: block; }
.eyebrow {
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg3); margin-bottom: 22px;
}
h1.hero-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(38px, 6vw, 64px); line-height: 1.05; letter-spacing: -0.01em;
  margin: 0 0 26px; max-width: 17ch; color: var(--fg1);
}
.hero-title .grad {
  background: var(--zva-gradient); -webkit-background-clip: text;
  background-clip: text; color: transparent;
}
.hero-sub { font-size: clamp(17px, 2vw, 20px); line-height: 1.55; color: var(--fg2); max-width: 58ch; margin: 0; }
.hero-meta {
  margin-top: 38px; display: flex; gap: 30px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 12.5px; color: var(--fg3); letter-spacing: 0.02em;
}
.hero-meta div b { display: block; color: var(--fg1); font-weight: 700; font-size: 21px; line-height: 1.2; font-family: var(--font-display); margin-bottom: 5px; }

/* ---- section scaffolding ---- */
.section-label {
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg3);
  display: flex; align-items: center; gap: 14px; margin-bottom: 34px;
}
.section-label::after { content: ''; flex: 1; height: 1px; background: var(--line); }

/* ---- products ---- */
.products { padding: 24px 0 16px; }
.product-grid { display: grid; gap: 20px; grid-template-columns: 1fr 1fr; }
.product {
  position: relative; background: linear-gradient(180deg, #0c0c0d 0%, #070707 100%);
  border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: 32px 30px 28px; display: flex; flex-direction: column; overflow: hidden;
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.product::before {
  content: ''; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: var(--accent-line, transparent); opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}
.product:hover { transform: translateY(-3px); border-color: var(--line-strong); }
.product:hover::before { opacity: 1; }
.product.tt  { --accent-line: linear-gradient(90deg, var(--zva-blue), var(--zva-light-blue)); }
.product.ssl { --accent-line: var(--zva-gradient); }

.product-top { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.product-icon { width: 46px; height: 46px; border-radius: 11px; display: block; flex-shrink: 0; }
.product-icon.markwrap { display: grid; place-items: center; border: 1px solid var(--line); background: #050505; }
.product-icon.markwrap svg { width: 30px; height: 30px; }
.product-name { font-family: var(--font-display); font-weight: 700; font-size: 23px; color: var(--fg1); }
.product-kicker { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg3); margin-top: 2px; }
.product-lead { font-size: 16.5px; line-height: 1.5; color: var(--fg1); font-weight: 500; margin: 0 0 12px; }
.product-body { font-size: 14.5px; line-height: 1.6; color: var(--fg2); margin: 0 0 20px; }
.product-note { font-size: 12.5px; line-height: 1.55; color: var(--fg3); border-left: 1px solid var(--line-strong); padding-left: 12px; margin: 0 0 22px; }

.setups { display: flex; flex-wrap: wrap; gap: 7px; margin: 0 0 22px; }
.setup-pill {
  font-family: var(--font-mono); font-size: 11.5px; font-weight: 500; color: var(--fg2);
  background: var(--surface-inset); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 5px 9px;
}
.stat-row { display: flex; gap: 26px; margin: 0 0 24px; }
.stat .n { font-family: var(--font-display); font-weight: 700; font-size: 20px; color: var(--fg1); }
.stat .l { font-size: 11.5px; color: var(--fg3); margin-top: 2px; }

.product-foot { margin-top: auto; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-display);
  font-weight: 700; font-size: 14px; border-radius: var(--r-pill); padding: 12px 22px;
  cursor: pointer; border: 1px solid transparent;
  transition: background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--zva-blue); color: #fff; }
.btn-primary:hover { background: rgba(84,153,219,0.82); }
.btn .arrow { transition: transform var(--dur-fast) var(--ease-out); }
.btn:hover .arrow { transform: translateX(3px); }

.store-row { display: flex; flex-wrap: wrap; gap: 10px; }
.store-btn {
  display: inline-flex; align-items: center; gap: 11px; border: 1px solid var(--line-strong);
  border-radius: 12px; padding: 9px 16px; cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.store-btn:hover { border-color: var(--fg2); background: rgba(255,255,255,0.03); }
.store-btn svg { width: 21px; height: 21px; flex-shrink: 0; }
.store-btn .t { line-height: 1.15; }
.store-btn .t small { display: block; font-size: 9px; color: var(--fg3); letter-spacing: 0.05em; text-transform: uppercase; }
.store-btn .t span { display: block; font-size: 14px; font-weight: 700; color: var(--fg1); font-family: var(--font-display); }

/* ---- relationship ---- */
.relationship { padding: 64px 0; }
.rel-card {
  border: 1px solid var(--line); border-radius: var(--r-2xl);
  background: radial-gradient(circle at 0% 0%, rgba(84,153,219,0.07), transparent 44%),
              radial-gradient(circle at 100% 100%, rgba(242,202,48,0.06), transparent 44%), #070707;
  padding: 44px; display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px; align-items: center;
}
.rel-stage .k { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg3); margin-bottom: 10px; }
.rel-stage .v { font-family: var(--font-display); font-weight: 700; font-size: 18px; color: var(--fg1); margin-bottom: 8px; }
.rel-stage .d { font-size: 13.5px; color: var(--fg2); line-height: 1.5; max-width: 30ch; }
.rel-arrow { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line); color: var(--fg3); }
.rel-arrow svg { width: 22px; height: 22px; }

/* ---- studio ---- */
.studio { padding: 56px 0 72px; }
.studio-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: start; }
.studio h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(26px, 3.4vw, 36px); line-height: 1.12; letter-spacing: -0.01em; margin: 0; color: var(--fg1); }
.studio-body p { font-size: 15.5px; line-height: 1.65; color: var(--fg2); margin: 0 0 16px; }
.studio-body p:last-child { margin-bottom: 0; }
.principles { display: flex; flex-direction: column; gap: 2px; margin-top: 26px; }
.principle { display: flex; gap: 14px; padding: 16px 0; border-top: 1px solid var(--line); }
.principle:last-child { border-bottom: 1px solid var(--line); }
.principle .idx { font-family: var(--font-mono); font-size: 12px; color: var(--fg3); padding-top: 2px; min-width: 26px; }
.principle .pt { font-family: var(--font-display); font-weight: 700; font-size: 15px; color: var(--fg1); margin-bottom: 4px; }
.principle .pd { font-size: 13.5px; line-height: 1.5; color: var(--fg2); }

/* ---- disclaimer ---- */
.disclaimer { padding: 8px 0 64px; }
.disclaimer .wrap {
  border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 24px 26px; background: var(--surface-inset);
}
.disclaimer p { font-size: 12.5px; line-height: 1.6; color: var(--fg3); margin: 0; max-width: 90ch; }
.disclaimer p + p { margin-top: 10px; }
.disclaimer b { color: var(--fg2); font-weight: 600; }

/* ---- footer ---- */
footer.site {
  border-top: 1px solid var(--line); padding: 44px 0 56px;
  background: #050505;
}
.foot-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.foot-brand { display: inline-flex; align-items: center; gap: 11px; }
.foot-brand img { width: 26px; height: 26px; }
.foot-brand .name { font-family: var(--font-display); font-weight: 700; font-size: 13px; letter-spacing: 2.5px; text-transform: uppercase; color: var(--fg2); }
.foot-links { display: flex; gap: 24px; flex-wrap: wrap; }
.foot-links a { font-size: 13.5px; color: var(--fg2); transition: color var(--dur-fast) var(--ease-out); }
.foot-links a:hover { color: var(--fg1); }
.foot-copy { font-family: var(--font-mono); font-size: 11.5px; color: var(--fg3); letter-spacing: 0.04em; margin-top: 26px; }

/* ---- reveal ---- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out); }
  .reveal.in { opacity: 1; transform: none; }
}

/* ---- responsive ---- */
@media (max-width: 860px) {
  .product-grid { grid-template-columns: 1fr; }
  .studio-grid { grid-template-columns: 1fr; gap: 32px; }
  .rel-card { grid-template-columns: 1fr; gap: 28px; text-align: center; }
  .rel-stage .d { max-width: none; }
  .rel-arrow { transform: rotate(90deg); justify-self: center; }
  .nav-links { gap: 18px; }
}
@media (max-width: 560px) {
  .hero { padding: 92px 0 64px; }
  .nav-links a.nav-extra { display: none; }
  .hero-meta { gap: 22px; }
}