/* ==========================================================================
   Product pages — Data Intelligence and Decision Intelligence.
   Builds on css/core/system.css.
   ========================================================================== */

/* ---------- Product hero: copy beside a diagram ---------- */

.hero--product {
  min-height: 0;
}

.hero--product .hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  align-items: center;
  gap: 72px;
  padding-top: 176px;
  padding-bottom: 112px;
}

.hero--product .hero-title {
  font-size: clamp(44px, 5vw, 74px);
}

.hero--product .hero-shade {
  background:
    linear-gradient(90deg, rgba(19, 18, 15, 0.95) 0%, rgba(19, 18, 15, 0.82) 45%, rgba(19, 18, 15, 0.6) 100%),
    linear-gradient(180deg, rgba(19, 18, 15, 0.6) 0%, rgba(19, 18, 15, 0) 30%, rgba(19, 18, 15, 0.85) 100%);
}

/* Architecture diagram — sources, the five layers, uses */
.arch {
  margin: 0;
}

.arch svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.arch text {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  fill: var(--on-night);
}

.arch .arch-head {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  fill: var(--on-night-2);
}

.arch rect {
  fill: rgba(28, 26, 22, 0.85);
  stroke: var(--line-night-2);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.arch .arch-frame {
  fill: rgba(226, 194, 154, 0.04);
  stroke: var(--tan);
  stroke-opacity: 0.7;
}

.arch-stack rect:not(.arch-frame) {
  fill: rgba(226, 194, 154, 0.08);
  stroke: rgba(226, 194, 154, 0.35);
}

.arch-stack text {
  fill: var(--tan);
}

/* Data flows along the links as moving dashes */
.arch-flow path {
  fill: none;
  stroke: var(--tan);
  stroke-opacity: 0.5;
  stroke-width: 1;
  stroke-dasharray: 3 6;
  vector-effect: non-scaling-stroke;
  animation: archFlow 1.6s linear infinite;
}

@keyframes archFlow {
  to { stroke-dashoffset: -18; }
}

.hero.is-paused .arch-flow path {
  animation-play-state: paused;
}

.js .arch .arch-src > *,
.js .arch .arch-stack > *,
.js .arch .arch-use > *,
.js .arch .arch-flow,
.js .arch .arch-head {
  opacity: 0;
  animation: heroFade 1s var(--ease) forwards;
}

.js .arch .arch-head { animation-delay: 0.3s; }
.js .arch .arch-src > * { animation-delay: 0.45s; }
.js .arch .arch-flow { animation-delay: 0.9s; }
.js .arch .arch-stack > * { animation-delay: 0.65s; }
.js .arch .arch-use > * { animation-delay: 1.1s; }

/* ---------- Two-column split: copy beside a panel ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  align-items: center;
  gap: 80px;
}

.split-copy {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.split-copy .marker {
  margin-bottom: 8px;
}

.split-copy p:not(.lead):not(.marker) {
  color: var(--ink-2);
}

.section--night .split-copy p:not(.lead):not(.marker) {
  color: var(--on-night-2);
}

/* ---------- Data Intelligence 01: the word "closed" ---------- */

.closed {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  align-items: stretch;
  gap: 72px;
}

.closed-copy {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding-top: 8px;
}

.closed-copy p:not(.label) {
  color: var(--ink-2);
}

.closed-copy .closed-statement {
  font-family: var(--serif);
  font-size: clamp(24px, 2.2vw, 31px);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.closed-copy .closed-close {
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-family: var(--serif);
  font-size: 22px;
  color: var(--ink);
}

.closed-panel {
  display: flex;
  flex-direction: column;
  padding: 40px 44px;
}

.closed-word {
  font-family: var(--sans);
  font-size: clamp(52px, 5.6vw, 80px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.045em;
  color: var(--bronze);
}

.closed-defs {
  margin: 36px 0 28px;
  border-top: 1px solid var(--ink);
}

.closed-defs div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  align-items: baseline;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.closed-defs dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.closed-defs dd {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: -0.01em;
}

.js .closed-defs div {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s var(--ease), transform 0.7s var(--ease);
  transition-delay: calc(0.4s + var(--k) * 0.15s);
}

.js .closed.visible .closed-defs div {
  opacity: 1;
  transform: none;
}

.closed-note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

/* ---------- Spec list — numbered rows on a hairline grid ---------- */

.spec {
  list-style: none;
  border-top: 1px solid var(--line-night-2);
}

.spec-row {
  display: grid;
  grid-template-columns: 80px minmax(0, 5fr) minmax(0, 6fr);
  align-items: baseline;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line-night);
}

.spec-num {
  font-size: 12px;
  color: var(--tan);
}

.spec-name {
  font-family: var(--sans);
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.spec-row p {
  max-width: 560px;
  color: var(--on-night-2);
}

.js .spec-row {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s var(--ease), transform 0.7s var(--ease);
  transition-delay: calc(var(--k) * 0.09s);
}

.js .spec.visible .spec-row {
  opacity: 1;
  transform: none;
}

/* ---------- Data Intelligence 03: one refund request, two views ---------- */

.case {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  align-items: center;
  gap: 72px;
}

.case-table {
  overflow: hidden;
}

.case-row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.case-row:last-child {
  border-bottom: none;
}

.case-row--head {
  padding-top: 16px;
  padding-bottom: 16px;
  background: var(--paper);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.case-src {
  font-weight: 500;
}

.case-yes,
.case-no {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.case-yes {
  color: var(--ink);
}

.case-yes::before {
  content: '';
  width: 11px;
  height: 11px;
  background: var(--bronze);
  -webkit-mask: var(--check) center / contain no-repeat;
  mask: var(--check) center / contain no-repeat;
}

.case-no {
  color: var(--ink-3);
}

.case-no::before {
  content: '';
  width: 10px;
  height: 1px;
  background: currentColor;
}

/* The connected column fills in row by row once revealed */
.js .case .case-row:not(.case-row--head) > :last-child {
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  transition-delay: calc(0.5s + var(--k) * 0.18s);
}

.js .case.visible .case-row > :last-child {
  opacity: 1;
}

.case-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.case-copy p:not(.lead) {
  color: var(--ink-2);
}

.evidence {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  gap: 72px;
  margin-top: 96px;
  padding-top: 56px;
  border-top: 1px solid var(--line-2);
}

.stat--compact {
  padding: 0;
  border: none;
}

.stat--compact .stat-figure {
  font-size: clamp(88px, 9vw, 136px);
}

.measures {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-top: 4px;
}

.measures-list {
  list-style: none;
  border-top: 1px solid var(--ink);
}

.measures-list li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--sans);
  font-size: 20px;
  letter-spacing: -0.015em;
}

.measures-list .mono {
  font-size: 12px;
  color: var(--bronze);
}

/* ---------- Data Intelligence 04: execution log ---------- */

.code-lines {
  list-style: none;
  padding: 20px 24px 24px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
}

.code-lines li {
  display: grid;
  grid-template-columns: 22px 150px minmax(0, 1fr);
  align-items: baseline;
  padding: 7px 0;
  color: var(--on-night);
}

.code-lines li::before {
  content: '';
  grid-column: 1;
}

.code-lines .code-gap {
  height: 1px;
  margin: 10px 0;
  padding: 0;
  background: var(--line-night);
}

.code-key {
  grid-column: 2;
  color: var(--on-night-2);
}

.code-ok::before,
.code-rec::before {
  width: 11px;
  height: 11px;
  background: var(--sage-light);
  -webkit-mask: var(--check) center / contain no-repeat;
  mask: var(--check) center / contain no-repeat;
}

.code-flag,
.code-flag .code-key {
  color: var(--ember);
}

.code-flag::before {
  width: 7px;
  height: 7px;
  margin-left: 2px;
  border-radius: 50%;
  background: var(--ember);
}

.code-route,
.code-route .code-key {
  color: var(--tan);
}

.code-route::before {
  width: 12px;
  height: 10px;
  background: var(--tan);
  -webkit-mask: var(--arrow) center / contain no-repeat;
  mask: var(--arrow) center / contain no-repeat;
}

/* Lines print one by one once the panel is revealed */
.js .code .code-lines li:not(.code-gap) {
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease);
  transition-delay: calc(0.3s + var(--k) * 0.22s);
}

.js .code.visible .code-lines li {
  opacity: 1;
  transform: none;
}

/* ---------- Data Intelligence 05: the same data, a new use ---------- */

.reuse {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
}

.reuse-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 36px 40px 44px 0;
  border-right: 1px solid var(--line);
}

.reuse-col + .reuse-col {
  padding-left: 40px;
}

.reuse-col:last-child {
  border-right: none;
  padding-right: 0;
}

.reuse-name {
  min-height: 2.3em;
  font-family: var(--sans);
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.reuse-arrow {
  width: 28px;
  height: 14px;
  background: var(--bronze);
  -webkit-mask: var(--arrow) left center / contain no-repeat;
  mask: var(--arrow) left center / contain no-repeat;
  transform: rotate(90deg);
  transform-origin: 7px 7px;
}

.reuse-col p:not(.label) {
  font-size: 18px;
  font-weight: 300;
  line-height: 1.45;
}

.note-band {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 7fr) auto;
  align-items: start;
  gap: 40px;
  margin-top: 80px;
  padding: 40px 44px;
}

.note-band p:not(.label) {
  max-width: 640px;
  color: var(--ink-2);
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .hero--product .hero-inner,
  .split,
  .closed,
  .case,
  .evidence {
    grid-template-columns: 1fr;
  }

  .hero--product .hero-inner {
    gap: 56px;
    padding-top: 140px;
    padding-bottom: 80px;
  }

  .arch {
    max-width: 620px;
  }

  .spec-row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 12px 20px;
  }

  .spec-row p {
    grid-column: 2;
  }

  .reuse {
    grid-template-columns: 1fr;
  }

  .reuse-col,
  .reuse-col + .reuse-col,
  .reuse-col:last-child {
    padding: 32px 0;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .note-band {
    grid-template-columns: 1fr;
    gap: 18px;
  }

}

@media (max-width: 600px) {
  .hero--product .hero-inner {
    padding-top: 120px;
    padding-bottom: 64px;
  }

  .closed-panel {
    padding: 28px 22px;
  }

  .closed-defs div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .case-row {
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 6px 12px;
    padding: 16px;
    font-size: 14px;
  }

  .case-row > :nth-child(2) {
    grid-column: 1 / -1;
    grid-row: 2;
    color: var(--ink-2);
  }

  .case-row--head > :nth-child(2) {
    display: none;
  }

  .evidence {
    margin-top: 64px;
    gap: 48px;
  }

  .code-lines {
    padding: 16px;
    font-size: 12px;
  }

  .code-lines li {
    grid-template-columns: 20px minmax(0, 1fr);
  }

  .code-lines li > span:last-child {
    grid-column: 2;
  }

  .note-band {
    padding: 28px 22px;
  }

}