/* ============================================================
   scadUP — landing.css
   Additive styles for the hero proof list, the interactive demo
   suite, the pricing calculator and the verification badges.
   Uses ONLY the tokens already defined in css/styles.css, so both
   themes come for free. Nothing here overrides existing rules.
   ============================================================ */

/* ---------- Hero additions ---------- */
.hero-proof {
  list-style: none;
  display: grid;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
  max-width: 60ch;
}
.hero-proof li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .55rem;
  color: var(--ink-muted);
  font-size: .95rem;
  line-height: 1.5;
}
.hero-proof-k {
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .18rem .55rem;
  white-space: nowrap;
}
.hero-jump {
  margin-top: var(--space-3);
  font-size: .9rem;
}
.hero-jump a {
  color: var(--ink-muted);
  text-decoration-color: var(--line);
  text-underline-offset: 4px;
  display: inline-block;
  padding: .5rem 0;
  min-height: 24px;
}
.hero-jump a:hover { color: var(--ink); }

/* ---------- Demo suite ---------- */
.demo-tabs { margin-top: var(--space-5); }

.demo-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}
.demo-tab {
  appearance: none;
  background: transparent;
  color: var(--ink-muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .7rem 1.1rem;
  min-height: 44px;
  font: inherit;
  font-size: .92rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.demo-tab:hover { color: var(--ink); border-color: var(--accent); }
.demo-tab[aria-selected="true"] {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: var(--accent);
}
.demo-tab-n { font-size: .72rem; opacity: .8; }

.demo-panel { padding: var(--space-4); }
.demo-panel:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; }
.demo-panel-head {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}
.demo-panel-head h3 { font-size: 1.25rem; line-height: 1.3; }
.demo-panel-sub { color: var(--ink-muted); font-size: .93rem; margin-top: .4rem; max-width: 60ch; }
.demo-play { min-height: 44px; white-space: nowrap; }
.demo-foot {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: .88rem;
  line-height: 1.6;
}

.demo-stage {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
}
@media (min-width: 860px) {
  .demo-stage { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); align-items: start; }
}

.demo-sheet {
  width: 100%;
  height: auto;
  display: block;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.dsheet-grid { color: var(--accent); }
.dsheet-ink { color: var(--ink); }
.dsheet-duct { color: var(--accent-2); opacity: .85; }
.dsheet-foot { color: var(--gold); opacity: .9; }
.dsheet-sweep { fill: var(--accent); opacity: 0; }
.dsheet-sweep.is-scanning {
  opacity: .28;
  animation: dsweep 1.6s var(--ease) forwards;
}
@keyframes dsweep {
  from { transform: translateX(0); }
  to   { transform: translateX(310px); }
}
.dsheet-region {
  fill: var(--accent);
  stroke: var(--accent);
  stroke-width: 1.2;
  opacity: 0;
  transition: opacity .35s var(--ease);
}
.dsheet-region.is-found { opacity: .16; }
.dsheet-region.is-active { opacity: .34; stroke-width: 2; }
@media (prefers-reduced-motion: reduce) {
  .dsheet-sweep.is-scanning { animation: none; opacity: 0; }
  .dsheet-region { transition: none; }
}

.demo-cap { margin-top: .6rem; font-size: .78rem; color: var(--ink-muted); }
.demo-side-h { font-size: .72rem; letter-spacing: .12em; color: var(--ink-muted); margin-bottom: .6rem; }

.qty-list { list-style: none; display: grid; gap: .5rem; }
.qty-item {
  width: 100%;
  min-height: 44px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: .75rem;
  text-align: left;
  padding: .7rem .85rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.qty-item:hover { border-color: var(--accent); }
.qty-item[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--surface-strong);
  box-shadow: inset 3px 0 0 var(--accent);
}
.qty-code { font-size: .72rem; color: var(--accent); }
.qty-desc { font-size: .88rem; }
.qty-val { font-size: .85rem; color: var(--ink); white-space: nowrap; }
.qty-val abbr { text-decoration: none; border-bottom: 1px dotted var(--line); }

.qty-source {
  margin-top: var(--space-3);
  padding: var(--space-3);
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.qty-source-h { font-size: .7rem; letter-spacing: .12em; color: var(--accent); }
.qty-crop {
  width: 100%;
  height: auto;
  margin: .6rem 0;
  color: var(--ink);
}
.qty-crop-bg { fill: var(--surface-strong); }
.qty-crop-box { fill: none; stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 4 3; }
.qty-source-meta { font-size: .75rem; color: var(--ink-muted); line-height: 1.6; }

/* ---------- Demo 2: walkthrough ---------- */
.walk-steps { list-style: none; display: grid; gap: .75rem; }
.walk-step {
  padding: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  opacity: .5;
  transition: opacity .25s var(--ease), border-color .25s var(--ease);
}
.walk-step.is-active {
  opacity: 1;
  border-color: var(--accent);
  background: var(--surface-strong);
  box-shadow: inset 3px 0 0 var(--accent);
}
.walk-step.is-done { opacity: .78; }
.walk-k { font-size: .72rem; letter-spacing: .1em; color: var(--accent); }
.walk-t { font-size: 1.02rem; margin: .35rem 0 .3rem; }
.walk-b { font-size: .88rem; color: var(--ink-muted); line-height: 1.6; }
.walk-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.walk-bar .btn { min-height: 44px; }
.walk-pos { font-size: .8rem; color: var(--ink-muted); }

/* ---------- Demo 3: attestation gates ---------- */
.attest-flow { display: grid; gap: .6rem; }
.attest-gate {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 0;
}
.attest-gate > summary {
  cursor: pointer;
  list-style: none;
  padding: .85rem var(--space-3);
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .95rem;
}
.attest-gate > summary::-webkit-details-marker { display: none; }
.attest-gate > summary::after {
  content: "\25BE";
  margin-left: auto;
  color: var(--ink-muted);
  transition: transform .2s var(--ease);
}
.attest-gate[open] > summary::after { transform: rotate(180deg); }
.attest-gate > summary:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: -2px; border-radius: var(--radius-sm); }
.attest-n { font-size: .7rem; letter-spacing: .1em; color: var(--accent); }
.attest-gate p {
  padding: 0 var(--space-3) var(--space-3);
  color: var(--ink-muted);
  font-size: .89rem;
  line-height: 1.65;
}
.st { white-space: nowrap; }
.st-draft { color: var(--ink-muted); }
.st-review { color: var(--gold-strong); }
.st-ok { color: var(--accent-2); }

/* ---------- Pricing calculator ---------- */
.calc { margin-top: var(--space-5); padding: var(--space-4); }
.calc-head h3 { font-size: 1.3rem; }
.calc-sub { color: var(--ink-muted); font-size: .93rem; margin-top: .4rem; max-width: 62ch; }
.calc-form { margin-top: var(--space-4); display: grid; gap: var(--space-4); }
@media (min-width: 900px) {
  .calc-form { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); align-items: start; }
  .calc-field:first-of-type { grid-row: span 2; }
}
.calc-field { border: 0; }
.calc-label {
  display: block;
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--ink-muted);
  margin-bottom: .6rem;
  padding: 0;
}
.calc-tiers { display: grid; gap: .5rem; }
@media (min-width: 620px) { .calc-tiers { grid-template-columns: 1fr 1fr; } }

.calc-tier { display: block; cursor: pointer; }
.calc-tier input {
  position: absolute;
  width: 1px; height: 1px;
  opacity: 0;
  pointer-events: none;
}
.calc-tier-body {
  display: grid;
  gap: .2rem;
  min-height: 44px;
  padding: .8rem .9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.calc-tier:hover .calc-tier-body { border-color: var(--accent); }
.calc-tier input:checked + .calc-tier-body {
  border-color: var(--accent);
  background: var(--surface-strong);
  box-shadow: inset 3px 0 0 var(--accent);
}
.calc-tier input:focus-visible + .calc-tier-body { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
.calc-tier-name { font-size: .74rem; letter-spacing: .1em; color: var(--accent); }
.calc-tier-price { font-size: 1.05rem; color: var(--ink); }
.calc-tier-note { font-size: .8rem; color: var(--ink-muted); }

.calc-qty { display: flex; align-items: center; gap: .5rem; }
.calc-step {
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}
.calc-step:hover { border-color: var(--accent); }
#calc-projects {
  width: 5.5rem;
  min-height: 44px;
  text-align: center;
  font: inherit;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: .5rem;
}
.calc-hint { font-size: .78rem; color: var(--ink-muted); margin-top: .5rem; }

.calc-out {
  padding: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
}
.calc-out-k { font-size: .72rem; letter-spacing: .12em; color: var(--ink-muted); }
/* `.section p` in styles.css is more specific than a single class, so the
   high-emphasis strings below re-assert --ink at matching specificity. */
#calc .calc-out p.calc-total { font-size: clamp(1.8rem, 5vw, 2.4rem); color: var(--ink); margin: .3rem 0; line-height: 1.1; }
.demos .walk-step p.walk-t { color: var(--ink); }
.demo-panel .qty-desc { color: var(--ink); }
.attest-gate p .st-review { color: var(--gold-strong); }
.attest-gate p .st-ok { color: var(--accent-2); }
.calc-breakdown { font-size: .85rem; color: var(--ink-muted); line-height: 1.5; }

.calc-cta {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}
.calc-note { font-size: .82rem; color: var(--ink-muted); flex: 1 1 22ch; }

/* ---------- Verification badges ---------- */
.verify-badges {
  list-style: none;
  margin-top: var(--space-5);
  display: grid;
  gap: var(--space-3);
}
@media (min-width: 800px) { .verify-badges { grid-template-columns: repeat(3, 1fr); } }
.verify-badge {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-3);
}
.verify-badge > span:last-child { display: grid; gap: .4rem; }
.verify-badge strong { font-size: .74rem; letter-spacing: .1em; color: var(--accent); }
.verify-badge span span { font-size: .87rem; color: var(--ink-muted); line-height: 1.6; }
.verify-ic { flex: 0 0 auto; color: var(--accent); }
.verify-ic svg { width: 26px; height: 26px; display: block; }

/* ---------- 320px reflow guard ---------- */
@media (max-width: 400px) {
  .qty-item { grid-template-columns: 1fr; gap: .3rem; }
  .qty-val { justify-self: start; }
  .demo-panel, .calc { padding: var(--space-3); }
  .walk-bar { flex-direction: column; align-items: stretch; }
  .walk-bar .btn { width: 100%; }
  .walk-pos { text-align: center; }
}