/* ==========================================================================
   CAD-Flow — home page
   ========================================================================== */

.skip {
  position: absolute;
  left: 50%;
  top: -100px;
  z-index: calc(var(--z-nav) + 1);
  transform: translateX(-50%);
  transition: top var(--fast) var(--ease);
}
.skip:focus-visible { top: 12px; }

/* ------------------------------------------------------------ old vs new */

.compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--s-5);
  align-items: stretch;
}

.compare-col {
  padding: var(--s-6);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
}
.compare-old { border-style: dashed; background: rgba(255, 255, 255, .012); }
.compare-new {
  border-color: rgba(59, 158, 255, .3);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(59, 158, 255, .1), transparent 62%),
    linear-gradient(180deg, var(--surface), var(--bg-2));
  box-shadow: 0 24px 60px -30px rgba(37, 99, 235, .5);
}

.compare-tag {
  display: inline-block;
  padding: 5px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.compare-tag.is-new {
  border-color: rgba(59, 158, 255, .4);
  background: var(--blue-soft);
  color: var(--blue);
}

.steps {
  counter-reset: s;
  list-style: none;
  margin: var(--s-5) 0 0;
  padding: 0;
  display: grid;
  gap: var(--s-3);
}
.steps li {
  counter-increment: s;
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  color: var(--ink-2);
}
.steps li::before {
  content: counter(s);
  position: absolute;
  left: 0; top: 1px;
  display: grid;
  place-items: center;
  width: 22px; height: 22px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
}
.compare-new .steps li { color: var(--ink); }
.compare-new .steps li::before {
  border-color: rgba(59, 158, 255, .45);
  background: var(--blue-soft);
  color: var(--blue);
}
.steps code {
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, .06);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink);
}
.compare-new .steps code { background: var(--blue-soft); color: var(--blue); }

.compare-note {
  margin-top: var(--s-5);
  padding-top: var(--s-5);
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-3);
}

.compare-arrow {
  display: grid;
  place-items: center;
  width: 44px;
  color: var(--blue);
  opacity: .5;
}

/* ------------------------------------------------------ the AutoCAD mock */

.demo-section { position: relative; overflow: hidden; }

.acad {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  background: var(--bg-2);
  overflow: hidden;
  box-shadow: 0 50px 100px -40px rgba(0, 0, 0, .9),
              0 0 0 1px rgba(59, 158, 255, .06);
}

.acad-chrome {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 var(--s-4);
  height: 40px;
  background: #0C1018;
  border-bottom: 1px solid var(--line);
}
.acad-dot { width: 9px; height: 9px; border-radius: 50%; background: #2A3346; }
.acad-title { margin-left: var(--s-4); font-size: 11px; color: var(--ink-3); letter-spacing: .04em; text-transform: none; }

.acad-body { display: grid; grid-template-columns: 260px 1fr; min-height: 430px; }

/* palette */
.palette {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: #0C1018;
}
.palette-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  font-weight: 600;
}
.palette-search {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: var(--s-3);
  padding: 9px 11px;
  border: 1px solid rgba(59, 158, 255, .35);
  border-radius: var(--r-sm);
  background: rgba(59, 158, 255, .06);
  font-size: 13px;
  color: var(--ink);
}
.palette-search svg { color: var(--blue); flex-shrink: 0; }
.typed { white-space: nowrap; }

.caret {
  display: inline-block;
  width: 1.5px;
  height: 15px;
  background: var(--blue);
  vertical-align: text-bottom;
  animation: blink 1.1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.palette-results { flex: 1; padding: 0 var(--s-2); display: grid; align-content: start; gap: 2px; }
.res {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  transition: opacity 400ms var(--ease), transform 400ms var(--ease), background var(--fast) var(--ease);
}
.js .res { opacity: 0; transform: translateY(6px); }
.js .res.is-in { opacity: 1; transform: none; }
.res:first-child { background: rgba(59, 158, 255, .12); box-shadow: inset 2px 0 0 var(--blue); }
.res-thumb {
  width: 30px; height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background:
    linear-gradient(90deg, rgba(59, 158, 255, .45) 1px, transparent 1px) 0 0 / 7px 7px,
    linear-gradient(rgba(59, 158, 255, .45) 1px, transparent 1px) 0 0 / 7px 7px,
    #0F1420;
}
.res:first-child .res-thumb { border-color: rgba(59, 158, 255, .5); }
.res-t { font-size: 12.5px; color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.res:first-child .res-t { color: var(--ink); }
.res-m { font-size: 9.5px; color: var(--ink-3); letter-spacing: .06em; }
.res:first-child .res-m { color: var(--blue); }

.palette-foot {
  padding: var(--s-3) var(--s-4);
  border-top: 1px solid var(--line);
  font-size: 10px;
  letter-spacing: .08em;
}

/* the drawing area */
.acad-canvas {
  position: relative;
  background:
    radial-gradient(ellipse at 60% 40%, rgba(59, 158, 255, .05), transparent 70%),
    #0A0D14;
  display: flex;
  flex-direction: column;
}
.plan { flex: 1; width: 100%; height: auto; }

.plan-grid path { stroke: rgba(255, 255, 255, .045); stroke-width: 1; fill: none; }

.plan-walls path,
.plan-door path,
.plan-dim path {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
/* the self-drawing effect — only when JS can undo it */
.js .plan-walls path,
.js .plan-door path,
.js .plan-dim path {
  stroke-dasharray: var(--len, 2000);
  stroke-dashoffset: var(--len, 2000);
}
.plan-walls path { stroke: #8FCBFF; stroke-width: 3.5; }
.plan-door path { stroke: rgba(143, 203, 255, .55); stroke-width: 1.6; }
.plan-dim path  { stroke: var(--amber); stroke-width: 1.2; opacity: .8; }

.plan.is-drawn .plan-walls path,
.plan.is-drawn .plan-door path,
.plan.is-drawn .plan-dim path {
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1400ms var(--ease);
}
.plan.is-drawn .plan-door path { transition-delay: 700ms; }
.plan.is-drawn .plan-dim path  { transition-delay: 1000ms; }

.plan-dim text {
  font-family: var(--mono);
  font-size: 11px;
  fill: var(--amber);
  opacity: .85;
}
.js .plan-dim text { opacity: 0; }
.plan.is-drawn .plan-dim text { opacity: .85; transition: opacity 500ms var(--ease) 1600ms; }

/* the asset drops in last — this is the payoff */
.js .plan-asset { opacity: 0; }
.plan.is-placed .plan-asset {
  opacity: 1;
  animation: drop 700ms var(--ease) both;
}
@keyframes drop {
  from { opacity: 0; transform: translate(440px, 130px) scale(.86); }
  to   { opacity: 1; transform: translate(440px, 150px) scale(1); }
}

.asset-halo { fill: rgba(255, 159, 69, .1); stroke: rgba(255, 159, 69, .35); stroke-width: 1; }
.plan.is-placed .asset-halo { animation: ping 1.6s var(--ease) .3s 2; }
@keyframes ping {
  0%   { r: 30; opacity: .9; }
  100% { r: 46; opacity: 0; }
}
.asset-lines path, .asset-lines circle { fill: none; stroke: var(--amber); stroke-width: 2; stroke-linejoin: round; }
.asset-tag { font-family: var(--mono); font-size: 10px; fill: var(--amber); letter-spacing: .08em; }

.acad-cmd {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px var(--s-4);
  border-top: 1px solid var(--line);
  background: #0C1018;
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: none;
  color: var(--ink);
}
.acad-cmd-p { color: var(--ink-3); }

/* ------------------------------------------------------------------- cta */

.cta-section { position: relative; overflow: hidden; }
.cta-box {
  position: relative;
  display: grid;
  gap: var(--s-5);
  justify-items: center;
  max-width: 760px;
  margin-inline: auto;
  padding: var(--s-9) var(--s-6);
  text-align: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  background: linear-gradient(180deg, rgba(21, 27, 43, .85), rgba(15, 20, 32, .85));
  backdrop-filter: blur(10px);
}

/* -------------------------------------------------------------- responsive */

@media (max-width: 1024px) {
  .compare { grid-template-columns: 1fr; }
  .compare-arrow { width: auto; height: 40px; transform: rotate(90deg); }
  .acad-body { grid-template-columns: 220px 1fr; }
}

@media (max-width: 768px) {
  .acad-body { grid-template-columns: 1fr; min-height: 0; }
  .palette { border-right: 0; border-bottom: 1px solid var(--line); }
  .palette-results { padding-bottom: var(--s-2); }
  .acad-title { display: none; }
}