/* ============================================================
   VibeX — design tokens
   ============================================================ */
:root {
  --bg: #06070b;
  --bg-elev: #0c0e15;
  --surface: rgba(255, 255, 255, 0.025);
  --surface-hover: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text: #eceef5;
  --text-dim: #a6adc0;
  --text-faint: #6f7789;

  --accent: #7c5cff;
  --accent-2: #29d3ee;
  --accent-soft: rgba(124, 92, 255, 0.14);

  --radius: 16px;
  --radius-sm: 10px;
  --container: 1140px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;   /* iOS Safari must not inflate text on its own in landscape */
  scroll-behavior: smooth;
  scroll-padding-top: 88px;         /* anchors must not slide under the sticky header */
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;                 /* insurance against horizontal scroll on mobile */
}

img, svg, video { max-width: 100%; height: auto; display: block; }

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

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--accent); color: #fff; }

/* ============================================================
   Layout primitives
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(3.5rem, 7vw, 6rem); }
.section--tight { padding-block: clamp(3rem, 5.5vw, 4.5rem); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ============================================================
   Typography
   ============================================================ */
h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 620;
  text-wrap: balance;
}

h1 { font-size: clamp(2.4rem, 1.4rem + 4.6vw, 4.5rem); }
h2 { font-size: clamp(1.85rem, 1.3rem + 2.4vw, 2.9rem); }
h3 { font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.35rem); }

p { margin: 0 0 1.1em; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: clamp(1.05rem, 0.98rem + 0.5vw, 1.3rem);
  color: var(--text-dim);
  max-width: 60ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 1.1rem;
}
.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.gradient-text {
  background: linear-gradient(103deg, var(--text) 18%, var(--accent) 52%, var(--accent-2) 88%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --btn-bg: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;                 /* tap target >= 44px, WCAG 2.5.8 */
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--btn-bg);
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 550;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease),
    border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.btn:hover { transform: translateY(-1px); border-color: var(--border-strong); }
.btn:active { transform: translateY(0); }

.btn--primary {
  --btn-bg: linear-gradient(103deg, var(--accent), #5b7cff 55%, var(--accent-2));
  border-color: transparent;
  color: #06070b;
  font-weight: 640;
  box-shadow: 0 8px 30px -12px rgba(124, 92, 255, 0.9);
}
.btn--primary:hover { box-shadow: 0 14px 40px -12px rgba(124, 92, 255, 0.95); }

.btn--ghost { background: var(--surface); }
.btn--ghost:hover { background: var(--surface-hover); }

/* ============================================================
   Header / navigation
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}
.header[data-scrolled="true"] {
  border-bottom-color: var(--border);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 68px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 660;
  letter-spacing: -0.03em;
  font-size: 1.08rem;
  margin-right: auto;
  padding-block: 0.5rem;
}
.logo__mark {
  width: 26px;
  height: 26px;
  flex: none;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid;
  place-items: center;
  color: #06070b;
  font-size: 0.85rem;
  font-weight: 800;
}

.nav { display: flex; align-items: center; gap: 0.35rem; }
.nav__link {
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 0.94rem;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.nav__link:hover { color: var(--text); background: var(--surface-hover); }

.header__actions { display: flex; align-items: center; gap: 0.5rem; }

.burger {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
.burger__bars, .burger__bars::before, .burger__bars::after {
  content: "";
  display: block;
  width: 17px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.24s var(--ease), opacity 0.18s var(--ease);
}
.burger__bars::before { transform: translateY(-5.5px); }
.burger__bars::after { transform: translateY(4px); }
.burger[aria-expanded="true"] .burger__bars { background: transparent; }
.burger[aria-expanded="true"] .burger__bars::before { transform: rotate(45deg); }
.burger[aria-expanded="true"] .burger__bars::after { transform: rotate(-45deg) translateY(0); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding-block: clamp(3rem, 7vw, 6.5rem) clamp(2rem, 4vw, 3rem);
  overflow: clip;
}
.hero__glow {
  position: absolute;
  inset: -30% -10% auto;
  height: 640px;
  background:
    radial-gradient(52% 60% at 22% 30%, rgba(124, 92, 255, 0.30), transparent 70%),
    radial-gradient(46% 55% at 78% 20%, rgba(41, 211, 238, 0.18), transparent 70%);
  filter: blur(30px);
  pointer-events: none;
  z-index: -1;
}
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(85% 60% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(85% 60% at 50% 0%, #000 20%, transparent 78%);
  pointer-events: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.9rem 0.4rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}
.badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.18);
}

.hero h1 { max-width: 16ch; }
.hero__lead { margin-top: 1.4rem; font-size: clamp(1.05rem, 0.95rem + 0.6vw, 1.35rem); }

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.stat { background: var(--bg); padding: 1.4rem 1.5rem; }
.stat__value {
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  font-weight: 660;
  letter-spacing: -0.035em;
  line-height: 1.1;
}
.stat__label {
  margin-top: 0.3rem;
  font-size: 0.85rem;
  color: var(--text-faint);
}

/* ============================================================
   Cards / grids
   ============================================================ */
.section__head { max-width: 62ch; margin-bottom: clamp(2.25rem, 5vw, 3.5rem); }

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}
/* Four-card sections read as a 2x2 block on wide screens; auto-fit would
   leave a lone orphan card on the second row. */
@media (min-width: 861px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
}

.card {
  min-width: 0;                     /* without this, long words tear the grid on mobile */
  position: relative;
  padding: clamp(1.4rem, 3vw, 1.9rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.22s var(--ease), background-color 0.22s var(--ease),
    transform 0.22s var(--ease);
}
.card:hover {
  border-color: var(--border-strong);
  background: var(--surface-hover);
  transform: translateY(-2px);
}
.card__icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid rgba(124, 92, 255, 0.24);
  margin-bottom: 1.1rem;
  color: var(--accent-2);
}
.card__icon svg { width: 20px; height: 20px; }
.card h3 { margin-bottom: 0.45rem; }
.card p { color: var(--text-dim); font-size: 0.95rem; }

.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1.1rem; }
.tag {
  font-size: 0.76rem;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-faint);
  white-space: nowrap;
}

/* Work cards */
.work { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
@media (min-width: 861px) {
  .work { grid-template-columns: repeat(2, 1fr); }
}
.work__item {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface), transparent);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}
.work__item:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.work__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  flex-wrap: wrap;
}
.work__name { font-size: 1.2rem; font-weight: 620; letter-spacing: -0.03em; }
.work__desc { color: var(--text-dim); font-size: 0.95rem; }

/* Stage badge on a venture card. Status is a fact, so it gets its own colour. */
.status {
  flex: none;
  align-self: center;
  font-size: 0.72rem;
  font-weight: 640;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  white-space: nowrap;
}
.status--building {
  color: #c4b5ff;
  border-color: rgba(124, 92, 255, 0.45);
  background: rgba(124, 92, 255, 0.12);
}
.status--early {
  color: #8ce7f7;
  border-color: rgba(41, 211, 238, 0.4);
  background: rgba(41, 211, 238, 0.1);
}
.status--oss {
  color: #86e3bd;
  border-color: rgba(52, 211, 153, 0.38);
  background: rgba(52, 211, 153, 0.1);
}

/* Process */
.steps { counter-reset: step; display: grid; gap: 1px; background: var(--border);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.step {
  background: var(--bg);
  padding: clamp(1.4rem, 3vw, 1.9rem);
  display: grid;
  gap: 0.35rem 1.5rem;
  grid-template-columns: auto 1fr;
  align-items: start;
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  padding-top: 0.35rem;
  grid-row: span 2;
}
.step h3 { margin: 0; }
.step p { color: var(--text-dim); font-size: 0.95rem; grid-column: 2; }

/* ============================================================
   CTA + footer
   ============================================================ */
.cta {
  position: relative;
  overflow: clip;
  border: 1px solid var(--border);
  border-radius: clamp(var(--radius), 3vw, 28px);
  padding: clamp(2.25rem, 6vw, 4.5rem);
  background:
    radial-gradient(90% 140% at 12% 0%, rgba(124, 92, 255, 0.20), transparent 60%),
    radial-gradient(70% 120% at 92% 100%, rgba(41, 211, 238, 0.13), transparent 60%),
    var(--bg-elev);
  text-align: center;
}
.cta h2 { max-width: 20ch; margin-inline: auto; }
.cta .lead { margin-inline: auto; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; margin-top: 2rem; }

.footer { border-top: 1px solid var(--border); padding-block: clamp(2.5rem, 6vw, 4rem) 2rem; }
.footer__grid {
  display: grid;
  gap: 2.25rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
  margin-bottom: 2.5rem;
}
.footer__brand { max-width: 34ch; }
.footer__brand p { color: var(--text-faint); font-size: 0.9rem; margin-top: 0.9rem; }
.footer__title {
  font-size: 0.78rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.9rem;
  font-weight: 620;
}
.footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.15rem; }
.footer__list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;                 /* tap target >= 44px, WCAG 2.5.8 */
  padding-block: 0.35rem;
  color: var(--text-dim);
  font-size: 0.92rem;
}
.footer__list a:hover { color: var(--text); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 0.85rem;
}
.footer__bottom a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--text-dim);
}
.footer__bottom a:hover { color: var(--text); }

/* ============================================================
   Legal / content pages
   ============================================================ */
.prose { max-width: 74ch; }
.prose h2 { font-size: clamp(1.35rem, 1.15rem + 0.8vw, 1.75rem); margin-top: 2.5rem; }
.prose h3 { margin-top: 1.75rem; }
.prose p, .prose li { color: var(--text-dim); }
.prose ul, .prose ol { padding-left: 1.25rem; display: grid; gap: 0.4rem; margin-bottom: 1.2em; }
.prose a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 3px; }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-hover);
  padding: 0.1em 0.4em;
  border-radius: 5px;
  overflow-wrap: anywhere;
}
.meta { color: var(--text-faint); font-size: 0.88rem; }

.notfound { display: grid; place-items: center; min-height: 64vh; text-align: center; }

/* ============================================================
   Reveal animation
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 980px) {
  .burger { display: inline-flex; }

  .nav {
    position: fixed;
    inset: 68px 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem var(--gutter) 1.5rem;
    /* Opaque, not translucent: backdrop-filter is unreliable, and a menu you
       can read the page through is a menu you cannot read. */
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 24px 40px -24px rgba(0, 0, 0, 0.9);
    max-height: calc(100dvh - 68px);
    overflow-y: auto;
    /* A closed menu is removed from the flow and from the a11y tree entirely. */
    display: none;
  }
  .nav[data-open="true"] { display: flex; }
  .nav__link {
    padding: 0.95rem 0.5rem;
    font-size: 1.05rem;
    border-radius: var(--radius-sm);
    border-bottom: 1px solid var(--border);
  }
  .nav__link:last-child { border-bottom: 0; }

  .header__actions .btn--primary { display: none; }
  .step { grid-template-columns: 1fr; gap: 0.35rem; }
  .step::before { grid-row: auto; padding-top: 0; }
  .step p { grid-column: 1; }
}

@media (max-width: 480px) {
  .hero__actions .btn { width: 100%; }
  .footer__bottom { justify-content: flex-start; }
  .work__top { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .status { align-self: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .header, .footer, .hero__glow, .hero__grid, .cta { display: none !important; }
  body { background: #fff; color: #000; }
}

.eyebrow--center { justify-content: center; }