/* === PCU PAGES CSS ===
   Page-specific styles for index, technology, architecture, etc.
*/

/* ── INDEX: PROBLEM STATEMENT ── */
.pcu-problem {
  padding: var(--pcu-section-pad) 0;
  background: var(--pcu-bg-dark-alt);
}

.pcu-problem__header {
  text-align: center;
  margin-bottom: 56px;
}

.pcu-problem__headline {
  font-family: var(--pcu-font-mono);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  color: var(--pcu-fg-dark-primary);
  margin-bottom: 16px;
}

.pcu-problem__intro {
  font-size: 1.05rem;
  color: var(--pcu-fg-dark-secondary);
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto;
}

/* ── INDEX: CTA BAND ── */
.pcu-cta-band {
  background: var(--pcu-bg-dark);
  padding: 80px 0;
  border-top: 1px solid var(--pcu-border-dark);
  text-align: center;
}

.pcu-cta-band__headline {
  font-family: var(--pcu-font-mono);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--pcu-fg-dark-primary);
  margin-bottom: 12px;
}

.pcu-cta-band__subhead {
  font-size: 1rem;
  color: var(--pcu-fg-dark-secondary);
  margin-bottom: 32px;
}

/* ── PLATFORM STACK DIAGRAM ── */
.pcu-stack {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
}

.pcu-stack__layer {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 2px;
}

.pcu-stack__box {
  flex: 1;
  background: var(--pcu-bg-dark-surface);
  border: 1px solid rgba(249,115,22,0.2);
  border-radius: 8px;
  padding: 16px 20px;
}

.pcu-stack__box-label {
  font-family: var(--pcu-font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pcu-fg-dark-primary);
  margin-bottom: 4px;
}

.pcu-stack__box-desc {
  font-size: 0.75rem;
  color: var(--pcu-fg-dark-secondary);
}

.pcu-stack__connector {
  display: flex;
  justify-content: center;
  padding: 6px 0;
}

.pcu-stack__connector::before {
  content: '';
  display: block;
  width: 2px;
  height: 20px;
  background: rgba(249,115,22,0.4);
}

.pcu-stack__highlight {
  border-color: var(--pcu-accent) !important;
  background: rgba(249,115,22,0.06) !important;
}

.pcu-stack__highlight .pcu-stack__box-label {
  color: var(--pcu-accent);
}

/* ── PROCESS PIPELINE (index-what-we-do) ── */
.pcu-process-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.pcu-process-flow::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(12.5% + 20px);
  right: calc(12.5% + 20px);
  height: 2px;
  background: linear-gradient(to right, rgba(249,115,22,0.5), rgba(249,115,22,0.2));
  z-index: 0;
}

.pcu-process-step {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 16px;
}

.pcu-process-step__icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: var(--pcu-bg-dark-surface);
  border: 2px solid rgba(249,115,22,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  position: relative;
  z-index: 2;
}

.pcu-process-step__num {
  font-family: var(--pcu-font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--pcu-accent);
}

.pcu-process-step__title {
  font-family: var(--pcu-font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--pcu-fg-dark-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}

.pcu-process-step__body {
  font-size: 0.8rem;
  color: var(--pcu-fg-dark-secondary);
  line-height: 1.5;
}

/* ── TECHNOLOGY PAGE ── */
.pcu-tech-prose {
  max-width: 720px;
}

.pcu-tech-prose h3 {
  font-family: var(--pcu-font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--pcu-fg-dark-primary);
  margin-bottom: 12px;
}

.pcu-tech-prose p {
  color: var(--pcu-fg-dark-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.pcu-tech-prose ul {
  list-style: none;
  margin-bottom: 16px;
}

.pcu-tech-prose ul li {
  color: var(--pcu-fg-dark-secondary);
  padding-left: 18px;
  position: relative;
  margin-bottom: 6px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.pcu-tech-prose ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--pcu-accent);
  font-family: var(--pcu-font-mono);
}

.pcu-tech-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

/* ── ARCHITECTURE PAGE ── */
.pcu-arch-spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.pcu-arch-spec-item {
  background: var(--pcu-bg-dark-surface);
  border: 1px solid var(--pcu-border-dark);
  border-radius: 8px;
  padding: 20px;
}

.pcu-arch-spec-item__key {
  font-family: var(--pcu-font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--pcu-fg-dark-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.pcu-arch-spec-item__value {
  font-family: var(--pcu-font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--pcu-accent);
}

/* ── EVALUATION PAGE ── */
.pcu-eval-process {
  max-width: 680px;
  margin: 0 auto;
}

/* ── CUSTOMERS PAGE ── */
.pcu-use-case-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 60px 0;
  border-bottom: 1px solid var(--pcu-border-light);
}

.pcu-use-case-section:last-child { border-bottom: none; }

.pcu-use-case-section:nth-child(even) .pcu-use-case__image {
  order: -1;
}

.pcu-use-case__label {
  font-family: var(--pcu-font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--pcu-accent-aa-light);
  margin-bottom: 12px;
}

.pcu-use-case__title {
  font-family: var(--pcu-font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--pcu-fg-light-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.pcu-use-case__body p {
  font-size: 0.9rem;
  color: var(--pcu-fg-light-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.pcu-use-case__image {
  border-radius: 12px;
  overflow: hidden;
  background: var(--pcu-bg-light-alt);
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── ABOUT PAGE ── */
.pcu-mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.pcu-mission-text h3 {
  font-family: var(--pcu-font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--pcu-fg-dark-primary);
  margin-bottom: 16px;
}

.pcu-mission-text p {
  font-size: 0.95rem;
  color: var(--pcu-fg-dark-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}

.pcu-mission-image {
  border-radius: 12px;
  overflow: hidden;
}

.pcu-mission-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── CULTURE PILLARS ── */
.pcu-culture-pillar {
  background: var(--pcu-bg-white);
  border: 1px solid var(--pcu-border-light);
  border-radius: 12px;
  padding: 32px;
  border-left: 4px solid var(--pcu-accent-aa-light);
}

.pcu-culture-pillar__title {
  font-family: var(--pcu-font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--pcu-fg-light-primary);
  margin-bottom: 8px;
}

.pcu-culture-pillar__body {
  font-size: 0.875rem;
  color: var(--pcu-fg-light-secondary);
  line-height: 1.6;
}

/* ── CONTACT MAP PLACEHOLDER ── */
.pcu-map-placeholder {
  background: var(--pcu-bg-light-alt);
  border-radius: 12px;
  overflow: hidden;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--pcu-border-light);
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .pcu-process-flow { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .pcu-process-flow::before { display: none; }
  .pcu-tech-split { grid-template-columns: 1fr; }
  .pcu-arch-spec-grid { grid-template-columns: repeat(2, 1fr); }
  .pcu-use-case-section { grid-template-columns: 1fr; }
  .pcu-use-case-section:nth-child(even) .pcu-use-case__image { order: 0; }
  .pcu-mission-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .pcu-process-flow { grid-template-columns: 1fr; }
  .pcu-arch-spec-grid { grid-template-columns: 1fr; }
}