/* ==========================================================
   BVX — brandvent.digital
   Palette: plaster (physical) / ultramarine deep (digital)
   ========================================================== */

:root {
  --plaster: #d7d9cf;
  --plaster-deep: #c4c8ba;
  --graphite: #22252a;
  --ultradeep: #0a1235;
  --signal: #5b4bff;
  --chalk: #f4f4ef;

  --font-display: "Bricolage Grotesque", "Arial Black", system-ui, sans-serif;
  --font-body: "Instrument Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "DM Mono", ui-monospace, "SFMono-Regular", monospace;

  --gutter: clamp(1.25rem, 5vw, 5rem);
  --rule: 1px solid color-mix(in srgb, var(--graphite) 22%, transparent);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--plaster);
  color: var(--graphite);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--graphite);
  color: var(--chalk);
  padding: 0.75rem 1rem;
  z-index: 50;
}
.skip:focus { left: 0; }

/* ---------- shared bits ---------- */

.label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--graphite) 62%, transparent);
  margin: 0;
}
.label--light { color: color-mix(in srgb, var(--chalk) 62%, transparent); }

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.85rem 1.4rem;
  border: 1px solid var(--graphite);
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}
.btn--solid { background: var(--graphite); color: var(--plaster); }
.btn--ghost { background: transparent; color: var(--graphite); }
a.btn:hover { transform: translateY(-2px); }
a.btn--ghost:hover { background: var(--graphite); color: var(--plaster); }

/* ---------- topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem var(--gutter);
  border-bottom: var(--rule);
}
.topbar__mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--graphite);
  text-decoration: none;
}
.topbar__domain {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--graphite) 58%, transparent);
}
.topbar__cta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1px solid var(--signal);
  padding-bottom: 2px;
}

/* ==========================================================
   HERO — the signature. Two materials, one object.
   ========================================================== */

.hero {
  position: relative;
  height: clamp(30rem, 82svh, 54rem);
  overflow: hidden;
  touch-action: pan-y;
  cursor: ew-resize;
  border-bottom: 1px solid var(--graphite);
}

.hero__layer {
  position: absolute;
  inset: 0;
  user-select: none;
}

.hero__layer--physical {
  background-color: var(--plaster);
  background-image: radial-gradient(circle at 1px 1px,
    color-mix(in srgb, var(--graphite) 16%, transparent) 1px, transparent 0);
  background-size: 9px 9px;
  color: var(--graphite);
}

.hero__layer--digital {
  background-color: var(--ultradeep);
  background-image:
    radial-gradient(60% 55% at 72% 30%,
      color-mix(in srgb, var(--signal) 42%, transparent), transparent 70%),
    linear-gradient(to right,
      color-mix(in srgb, var(--chalk) 8%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom,
      color-mix(in srgb, var(--chalk) 8%, transparent) 1px, transparent 1px);
  background-size: 100% 100%, 46px 46px, 46px 46px;
  color: var(--chalk);
  clip-path: inset(0 0 0 var(--seam, 50%));
}

.hero__inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 var(--gutter);
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
  opacity: 0.72;
}

.hero__word {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4.5rem, 19vw, 15rem);
  line-height: 0.82;
  letter-spacing: -0.045em;
  margin: 0;
}

.hero__line {
  font-size: clamp(1.05rem, 0.9rem + 0.8vw, 1.6rem);
  max-width: 22ch;
  margin: 1.4rem 0 0;
  font-weight: 500;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* the digital copy of the wordmark carries a faint signal glow */
.hero__layer--digital .hero__word {
  color: var(--chalk);
  text-shadow: 0 0 42px color-mix(in srgb, var(--signal) 85%, transparent);
}
.hero__layer--digital .btn { border-color: var(--chalk); }
.hero__layer--digital .btn--solid { background: var(--chalk); color: var(--ultradeep); }
.hero__layer--digital .btn--ghost { color: var(--chalk); }

.hero__tag {
  position: absolute;
  bottom: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.7;
}
.hero__tag--left { left: var(--gutter); }
.hero__tag--right { right: var(--gutter); }

/* the divider itself */
.seam {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--seam, 50%);
  width: 2px;
  margin-left: -1px;
  background: var(--signal);
  cursor: ew-resize;
  z-index: 3;
}
.seam__grip {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 46px;
  height: 46px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--signal) 22%, transparent);
}
.seam__grip::before,
.seam__grip::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 7px;
  height: 7px;
  border-top: 2px solid var(--chalk);
  border-right: 2px solid var(--chalk);
}
.seam__grip::before { left: 12px; transform: translateY(-50%) rotate(-135deg); }
.seam__grip::after { right: 12px; transform: translateY(-50%) rotate(45deg); }
.seam:focus-visible { outline: none; }
.seam:focus-visible .seam__grip {
  box-shadow: 0 0 0 4px var(--chalk), 0 0 0 8px var(--signal);
}

.hero__hint {
  position: absolute;
  top: 1.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--chalk);
  background: var(--signal);
  padding: 0.4rem 0.8rem;
  transition: opacity 0.4s ease;
}
.hero__hint.is-gone { opacity: 0; }

/* ==========================================================
   BANDS
   ========================================================== */

.band {
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
  border-bottom: var(--rule);
}
.band__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.9rem, 1.2rem + 3vw, 3.9rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0.8rem 0 2.5rem;
  max-width: 18ch;
}
.band__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: 1.5rem clamp(2rem, 6vw, 5rem);
  max-width: 68rem;
}
.band__cols p { margin: 0; }

/* ---------- pairs ---------- */

.make {
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
  border-bottom: var(--rule);
}
.make__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.9rem, 1.2rem + 3vw, 3.9rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0.8rem 0 3rem;
  max-width: 18ch;
}

.pairs { border-top: 1px solid var(--graphite); }

.pairs__head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 clamp(1.5rem, 5vw, 4rem);
  padding: 0.9rem 0;
  border-bottom: var(--rule);
}
.pairs__head--right { text-align: right; }

.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 clamp(1.5rem, 5vw, 4rem);
  border-bottom: var(--rule);
  position: relative;
}
.pair::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  border-left: 1px dashed color-mix(in srgb, var(--signal) 55%, transparent);
}
.pair__side {
  padding: 1.35rem 0;
  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.3rem);
  font-weight: 500;
}
.pair__side--digital {
  text-align: right;
  color: color-mix(in srgb, var(--ultradeep) 88%, var(--signal));
}

.pair--span { grid-template-columns: 1fr; }
.pair--span::before { display: none; }
.pair__side--span {
  display: grid;
  gap: 0.6rem;
  max-width: 52rem;
  font-weight: 400;
  color: color-mix(in srgb, var(--graphite) 82%, transparent);
}

/* ---------- process ---------- */

.steps {
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
  border-bottom: var(--rule);
}
.steps__list {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: clamp(1.75rem, 4vw, 3rem);
}
.step {
  border-top: 1px solid var(--graphite);
  padding-top: 1rem;
}
.step__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--signal);
}
.step__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.015em;
  margin: 0.5rem 0 0.5rem;
}
.step__body {
  margin: 0;
  font-size: 0.97rem;
  color: color-mix(in srgb, var(--graphite) 80%, transparent);
}

/* ---------- contact: the page ends on the digital side ---------- */

.contact {
  background-color: var(--ultradeep);
  background-image:
    radial-gradient(55% 60% at 20% 20%,
      color-mix(in srgb, var(--signal) 38%, transparent), transparent 70%),
    linear-gradient(to right,
      color-mix(in srgb, var(--chalk) 7%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom,
      color-mix(in srgb, var(--chalk) 7%, transparent) 1px, transparent 1px);
  background-size: 100% 100%, 46px 46px, 46px 46px;
  color: var(--chalk);
  padding: clamp(4.5rem, 12vw, 9rem) var(--gutter);
}
.contact__inner { max-width: 46rem; }
.contact__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 1.2rem + 3.4vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0.8rem 0 1.2rem;
}
.contact__body {
  margin: 0 0 2.2rem;
  color: color-mix(in srgb, var(--chalk) 82%, transparent);
  max-width: 38rem;
}
.contact__mail {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 1rem + 1.8vw, 2.4rem);
  letter-spacing: -0.02em;
  color: var(--chalk);
  text-decoration: none;
  border-bottom: 2px solid var(--signal);
  padding-bottom: 0.15rem;
}
.contact__mail:hover { color: color-mix(in srgb, var(--chalk) 70%, var(--signal)); }
.contact__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--chalk) 55%, transparent);
  margin: 2rem 0 0;
}

/* ---------- footer ---------- */

.foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.5rem;
  padding: 1.4rem var(--gutter);
  background: var(--ultradeep);
  color: color-mix(in srgb, var(--chalk) 60%, transparent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  border-top: 1px solid color-mix(in srgb, var(--chalk) 14%, transparent);
}
.foot__mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--chalk);
}

/* ---------- reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- narrow screens ---------- */

@media (max-width: 640px) {
  .topbar__domain { display: none; }

  .pairs__head { grid-template-columns: 1fr; gap: 0.3rem; }
  .pairs__head--right { text-align: left; }

  .pair { grid-template-columns: 1fr; }
  .pair::before { display: none; }
  .pair__side { padding: 1rem 0 0.35rem; }
  .pair__side--digital {
    text-align: left;
    padding: 0 0 1rem 1rem;
    border-left: 1px dashed color-mix(in srgb, var(--signal) 55%, transparent);
  }
  .pair__side--span { padding: 1.35rem 0; }

  .hero__tag { font-size: 0.62rem; letter-spacing: 0.14em; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  a.btn:hover { transform: none; }
}