/* ============================================================
   Landing page
   ============================================================ */

/* --- top bar ------------------------------------------------ */
.top {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  padding: 1.1rem 0;
  transition: background .4s var(--ease), border-color .4s var(--ease),
              padding .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.top.stuck {
  background: rgba(4, 6, 13, .72);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line-0);
  padding: .75rem 0;
}
.top .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.top nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-left: auto;
}
.top nav a.link {
  font-family: var(--font-mono);
  font-size: var(--t-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-2);
  position: relative;
  padding-block: .25rem;
  transition: color .25s var(--ease);
}
.top nav a.link::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--ir-cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.top nav a.link:hover { color: var(--ink-0); }
.top nav a.link:hover::after { transform: scaleX(1); }
@media (max-width: 760px) { .top nav a.link { display: none; } }

/* --- hero --------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  isolation: isolate;
}
.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  /* The surface is positioned to bleed past the right edge. Clip it here so it
     doesn't widen the document — `overflow-x: hidden` on body would hide the
     symptom while the page stayed 74px too wide on a phone. */
  overflow: hidden;
}
#vol-surface {
  position: absolute;
  top: 50%;
  right: -4%;
  translate: 0 -50%;
  width: 76%;
  height: 110%;
  opacity: .95;
  mask-image: radial-gradient(ellipse 70% 62% at 62% 50%, #000 45%, transparent 88%);
  -webkit-mask-image: radial-gradient(ellipse 70% 62% at 62% 50%, #000 45%, transparent 88%);
}
/* a cold pool of light under the surface */
.hero-canvas::before {
  content: '';
  position: absolute;
  right: 4%; top: 46%;
  width: 46vw; height: 46vw;
  translate: 0 -50%;
  background: radial-gradient(circle, rgba(19,55,245,.20), transparent 62%);
  filter: blur(30px);
}
@media (max-width: 980px) {
  #vol-surface { right: -22%; width: 120%; height: 74%; top: 26%; opacity: .55; }
  .hero { min-height: auto; padding: 7.5rem 0 3rem; }
}

.hero-copy { max-width: 40rem; position: relative; }
.hero h1 { margin: 1.4rem 0 0; }
.hero h1 .accent {
  background: linear-gradient(105deg, var(--ir-cyan-lit), var(--ir-blue-lit) 55%, var(--ir-blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero h1 .cursor {
  display: inline-block;
  width: .42ch; height: .78em;
  translate: 0 .04em;
  background: var(--ir-orange);
  box-shadow: 0 0 18px var(--ir-orange);
  animation: blink 1.15s steps(2, start) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero .lede { margin-top: 1.6rem; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 2.3rem;
}

/* readout under the hero copy: describes what's actually rendered */
.readout {
  margin-top: 3.2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  border: 1px solid var(--line-0);
  border-radius: var(--r-sm);
  background: linear-gradient(180deg, rgba(11,16,32,.55), rgba(11,16,32,.18));
  backdrop-filter: blur(6px);
  max-width: 34rem;
}
.readout div {
  padding: .78rem .95rem;
  border-right: 1px solid var(--line-0);
}
.readout div:last-child { border-right: 0; }
.readout dt {
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.readout dd {
  margin: .3rem 0 0;
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--ink-0);
  font-variant-numeric: tabular-nums;
}
.readout dd .u { color: var(--ir-cyan-lit); }

/* --- tape --------------------------------------------------- */
.tape {
  position: relative;
  z-index: 2;
  border-block: 1px solid var(--line-0);
  background: rgba(7, 10, 20, .6);
  overflow: hidden;
  padding: .7rem 0;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.tape-track {
  display: flex;
  width: max-content;
  gap: 3rem;
  animation: tape 46s linear infinite;
}
.tape:hover .tape-track { animation-play-state: paused; }
.tape span {
  font-family: var(--font-mono);
  font-size: var(--t-mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 3rem;
}
.tape span::after {
  content: '';
  width: 4px; height: 4px;
  background: var(--ir-blue-lit);
  rotate: 45deg;
}
@keyframes tape { to { transform: translateX(-50%); } }

/* --- generic section ---------------------------------------- */
.section { padding: 7.5rem 0; position: relative; }
.section-head { max-width: 46rem; margin-bottom: 3.5rem; }
.section-head h2 { margin-top: 1.1rem; }
.section-head p { margin-top: 1.1rem; }

/* --- dashboard cards ---------------------------------------- */
.cards {
  display: grid;
  /* auto-FIT, not auto-fill: with three dashboards and room for four, auto-fill
     leaves an empty bordered track that reads as a broken card. */
  grid-template-columns: repeat(auto-fit, minmax(295px, 1fr));
  gap: 1px;
  background: var(--line-0);
  border: 1px solid var(--line-0);
  border-radius: var(--r-md);
  overflow: hidden;
}
.card {
  --accent: var(--ir-blue);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.8rem 1.7rem 1.7rem;
  background: var(--bg-1);
  min-height: 230px;
  overflow: hidden;
  transition: background .4s var(--ease);
}
.card::before {
  /* accent wash that only shows on hover */
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 12% 0%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 62%);
  opacity: 0;
  transition: opacity .45s var(--ease);
}
.card > * { position: relative; }
.card:hover { background: var(--bg-2); }
.card:hover::before { opacity: 1; }

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}
.card:hover .glyph {
  box-shadow: 0 0 26px -6px var(--accent);
  transform: translateY(-2px);
}
.card h3 { margin-bottom: .35rem; }
.card p { color: var(--ink-2); font-size: .92rem; line-height: 1.55; }
.card-foot {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line-0);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* --- how access works --------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem 2rem;
  counter-reset: step;
}
.step { position: relative; padding-top: 2.6rem; counter-increment: step; }
.step::before {
  content: '0' counter(step);
  position: absolute;
  top: 0; left: 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .22em;
  color: var(--ir-blue-lit);
}
.step::after {
  content: '';
  position: absolute;
  top: 1.55rem; left: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, var(--line-2), transparent);
}
.step h3 { margin-bottom: .6rem; }
.step p { color: var(--ink-2); font-size: .93rem; }

/* --- closing band ------------------------------------------- */
.band {
  position: relative;
  border: 1px solid var(--line-1);
  border-radius: var(--r-lg);
  padding: clamp(2.5rem, 5vw, 4.5rem);
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 130% at 100% 0%, rgba(19,55,245,.28), transparent 60%),
    linear-gradient(180deg, var(--bg-2), var(--bg-1));
  text-align: center;
}
.band::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(126,152,232,.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(126,152,232,.06) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse 70% 100% at 50% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 100% at 50% 50%, #000, transparent 75%);
}
.band > * { position: relative; }
.band .eyebrow { justify-content: center; }
.band h2 { margin: 1.2rem auto 0; max-width: 22ch; }
.band .lede { margin: 1.2rem auto 0; text-align: center; }
.band .hero-actions { justify-content: center; }