/* ========================================
   Vengo AI — About (Enterprise)
   ======================================== */

body.about-page {
  background: #070708;
}

.about-page .about-hero,
.about-section {
  position: relative;
  overflow: hidden;
}

.about-container {
  width: min(1180px, calc(100% - 3rem));
  margin: 0 auto;
}

/* ----- Hero ----- */
.about-hero {
  min-height: 88vh;
  padding: calc(80px + 4.5rem) 0 5rem;
  display: flex;
  align-items: center;
  background:
    radial-gradient(ellipse 75% 50% at 68% 22%, rgba(124, 105, 255, 0.2), transparent 62%),
    radial-gradient(ellipse 60% 45% at 12% 78%, rgba(255, 255, 255, 0.04), transparent 58%),
    linear-gradient(180deg, #070708 0%, #0a0a0d 55%, #070708 100%);
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 38%, #000 20%, transparent 72%);
}

.about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(340px, 1.08fr);
  gap: clamp(2rem, 4.5vw, 4.5rem);
  align-items: center;
}

.about-hero__copy .enterprise-title {
  max-width: 16ch;
}

/* ----- Infrastructure visual ----- */
.about-infra-visual {
  position: relative;
  min-height: clamp(24rem, 36vw, 30rem);
  animation: about-float 7s ease-in-out infinite;
}

.about-infra-visual::before {
  content: "";
  position: absolute;
  inset: 8% 0 0 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 55% 40% at 50% 45%, rgba(124, 105, 255, 0.32), transparent 70%);
  filter: blur(12px);
  animation: about-glow 4.5s ease-in-out infinite;
}

@keyframes about-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

@keyframes about-glow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.95; }
}

.about-infra-hub {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 3;
  width: clamp(7rem, 14vw, 9.5rem);
  height: clamp(7rem, 14vw, 9.5rem);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  color: #f7f7f8;
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.2), transparent 45%),
    linear-gradient(145deg, #5b4fdf, #7c69ff 55%, #3d3580);
  border: 1px solid rgba(200, 190, 255, 0.45);
  box-shadow:
    0 0 60px rgba(124, 105, 255, 0.45),
    0 24px 60px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  animation: about-hub-pulse 3s ease-in-out infinite;
}

.about-infra-hub strong {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.9;
}

.about-infra-hub span {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

@keyframes about-hub-pulse {
  0%, 100% { box-shadow: 0 0 50px rgba(124, 105, 255, 0.35), 0 24px 60px rgba(0, 0, 0, 0.5); }
  50% { box-shadow: 0 0 80px rgba(124, 105, 255, 0.55), 0 28px 70px rgba(0, 0, 0, 0.55); }
}

.about-infra-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.about-infra-lines svg {
  width: 100%;
  height: 100%;
}

.about-infra-line {
  fill: none;
  stroke: rgba(155, 140, 255, 0.35);
  stroke-width: 1.5;
  stroke-dasharray: 6 8;
  animation: about-dash 12s linear infinite;
}

@keyframes about-dash {
  to { stroke-dashoffset: -120; }
}

.about-infra-docs {
  position: absolute;
  left: 0;
  top: 18%;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  width: min(9rem, 28%);
}

.about-doc-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.65rem;
  border-radius: 0.65rem;
  font-size: 0.68rem;
  font-weight: 600;
  color: rgba(232, 232, 236, 0.88);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  animation: about-doc-in 0.8s ease backwards;
}

.about-doc-chip:nth-child(2) { animation-delay: 0.15s; }
.about-doc-chip:nth-child(3) { animation-delay: 0.3s; }
.about-doc-chip:nth-child(4) { animation-delay: 0.45s; }

.about-doc-chip i {
  color: #9b8cff;
  font-size: 0.85rem;
}

@keyframes about-doc-in {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: translateX(0); }
}

.about-infra-panel {
  position: absolute;
  z-index: 4;
  width: min(11.5rem, 34%);
  padding: 0.75rem 0.85rem;
  border-radius: 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    rgba(8, 8, 10, 0.92);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.about-infra-panel__label {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(196, 196, 205, 0.85);
}

.about-infra-panel--search {
  right: 0;
  top: 6%;
}

.about-infra-panel--agent {
  right: 4%;
  bottom: 8%;
}

.about-infra-panel--analytics {
  left: 28%;
  bottom: 4%;
  width: min(12rem, 36%);
}

.about-mini-bubble {
  padding: 0.4rem 0.5rem;
  margin-bottom: 0.35rem;
  border-radius: 0.55rem;
  font-size: 0.62rem;
  line-height: 1.4;
  color: rgba(232, 232, 236, 0.9);
  background: rgba(124, 105, 255, 0.15);
  border: 1px solid rgba(124, 105, 255, 0.22);
}

.about-mini-bubble--user {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
}

.about-mini-cite {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.35rem;
  padding: 0.35rem 0.45rem;
  border-radius: 0.45rem;
  font-size: 0.58rem;
  color: rgba(200, 190, 255, 0.95);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(124, 105, 255, 0.2);
}

.about-mini-stat {
  display: flex;
  justify-content: space-between;
  font-size: 0.62rem;
  color: rgba(232, 232, 236, 0.78);
  margin-bottom: 0.25rem;
}

.about-mini-stat strong {
  color: #f7f7f8;
}

.about-mini-bars {
  display: flex;
  align-items: flex-end;
  gap: 0.25rem;
  height: 2rem;
  margin-top: 0.4rem;
}

.about-mini-bars span {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, #9b8cff, #5b4fdf);
  animation: about-bar 2.4s ease-in-out infinite;
}

.about-mini-bars span:nth-child(1) { height: 45%; animation-delay: 0s; }
.about-mini-bars span:nth-child(2) { height: 72%; animation-delay: 0.2s; }
.about-mini-bars span:nth-child(3) { height: 58%; animation-delay: 0.4s; }
.about-mini-bars span:nth-child(4) { height: 88%; animation-delay: 0.6s; }

@keyframes about-bar {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

/* ----- Sections ----- */
.about-section {
  padding: 5.5rem 0;
  background: #070708;
}

.about-section--alt {
  background: linear-gradient(180deg, #0b0b0e 0%, #070708 100%);
}

.about-section--mist {
  background: linear-gradient(180deg, #f0f0f3 0%, #e7e7eb 100%);
  color: #121214;
}

.about-section--mist .enterprise-section-title,
.about-section--mist h3 {
  color: #101014;
}

.about-section--mist .enterprise-section-lead,
.about-section--mist p,
.about-section--mist li {
  color: #3f3f49;
}

.about-section--mist .about-philosophy-card,
.about-section--mist .about-principle-card,
.about-section--mist .metric-card {
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(0, 0, 0, 0.06);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.08);
}

.about-section--mist .metric-card strong {
  color: #101014;
}

.about-section-header {
  max-width: 46rem;
  margin: 0 auto 2.75rem;
  text-align: center;
}

.about-section-header--left {
  margin-left: 0;
  margin-right: 0;
  text-align: left;
  max-width: 40rem;
}

.about-philosophy-grid,
.about-build-grid,
.about-principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.about-philosophy-card,
.about-principle-card {
  padding: 1.35rem;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.about-philosophy-card:hover,
.about-principle-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 105, 255, 0.32);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.38), 0 0 36px rgba(124, 105, 255, 0.08);
}

.about-philosophy-card h3,
.about-principle-card h3 {
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
  line-height: 1.3;
  color: var(--lux-white);
}

.about-section--mist .about-philosophy-card h3,
.about-section--mist .about-principle-card h3 {
  color: #101014;
}

.about-philosophy-card p,
.about-principle-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.65;
  color: rgba(232, 232, 236, 0.75);
}

.about-build-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.about-build-card {
  padding: 1.4rem;
  border-radius: 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02)),
    rgba(8, 8, 10, 0.9);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.4);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.about-build-card:hover {
  transform: translateY(-3px);
  border-color: rgba(124, 105, 255, 0.35);
}

.about-build-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  color: var(--lux-white);
}

.about-build-card > p {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  line-height: 1.6;
  color: rgba(232, 232, 236, 0.76);
}

.about-ui-preview {
  min-height: 7.5rem;
  padding: 0.85rem;
  border-radius: 0.75rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.about-ui-preview .mini-line {
  display: block;
  height: 0.45rem;
  margin-bottom: 0.4rem;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(124, 105, 255, 0.35), rgba(255, 255, 255, 0.08));
}

.about-ui-preview .mini-line:nth-child(2) { width: 78%; }
.about-ui-preview .mini-line:nth-child(3) { width: 62%; }

.about-ui-preview--agent .about-ui-chat {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.about-ui-preview--search .about-ui-answer {
  font-size: 0.72rem;
  line-height: 1.45;
  color: rgba(232, 232, 236, 0.85);
  margin-bottom: 0.5rem;
}

.about-ui-preview--infra {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
}

.about-ui-node {
  padding: 0.5rem;
  border-radius: 0.5rem;
  text-align: center;
  font-size: 0.58rem;
  font-weight: 700;
  color: #c4b8ff;
  background: rgba(124, 105, 255, 0.12);
  border: 1px solid rgba(124, 105, 255, 0.25);
}

.about-ui-preview--analytics .about-mini-bars {
  margin-top: 0;
}

/* Why we exist */
.about-why-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}

.about-why-copy {
  max-width: 36rem;
}

.about-why-copy p {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(232, 232, 236, 0.78);
}

.about-why-copy p:last-child {
  margin-bottom: 0;
}

/* Architecture diagram */
.about-arch-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.35rem;
  margin-top: 2.5rem;
  padding: 2rem 1.5rem;
  border-radius: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
    rgba(8, 8, 10, 0.88);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.45);
}

.about-arch-node {
  flex: 0 1 auto;
  min-width: 7.5rem;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.35;
  color: #f7f7f8;
  background: rgba(124, 105, 255, 0.18);
  border: 1px solid rgba(155, 140, 255, 0.35);
}

.about-arch-node--core {
  background: linear-gradient(135deg, rgba(91, 79, 223, 0.5), rgba(124, 105, 255, 0.35));
  box-shadow: 0 0 28px rgba(124, 105, 255, 0.25);
}

.about-arch-arrow {
  color: rgba(155, 140, 255, 0.7);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.about-arch-split {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  width: 100%;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
}

/* Positioning */
.about-positioning {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2.5rem;
  align-items: center;
}

.about-positioning ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.about-positioning li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: rgba(232, 232, 236, 0.82);
}

.about-positioning li i {
  margin-top: 0.2rem;
  color: #9b8cff;
}

.about-stack-visual {
  display: grid;
  gap: 0.65rem;
}

.about-stack-layer {
  padding: 1rem 1.1rem;
  border-radius: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(232, 232, 236, 0.9);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.about-stack-layer:hover {
  border-color: rgba(124, 105, 255, 0.35);
  transform: translateX(4px);
}

.about-stack-layer span {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(196, 196, 205, 0.75);
}

/* Metrics */
.about-metrics-note {
  margin: 1.25rem auto 0;
  max-width: 42rem;
  text-align: center;
  font-size: 0.82rem;
  line-height: 1.5;
  color: rgba(196, 196, 205, 0.65);
}

.about-section--mist .about-metrics-note {
  color: #5a5a66;
}

.about-proof-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.about-proof-card {
  padding: 1.25rem;
  border-radius: 1rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.04);
}

.about-proof-card i {
  display: block;
  margin-bottom: 0.65rem;
  font-size: 1.35rem;
  color: #9b8cff;
}

.about-proof-card strong {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
  color: var(--lux-white);
}

.about-proof-card span {
  font-size: 0.8rem;
  line-height: 1.45;
  color: rgba(232, 232, 236, 0.7);
}

.about-section--mist .about-proof-card {
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(0, 0, 0, 0.06);
}

.about-section--mist .about-proof-card strong {
  color: #101014;
}

.about-section--mist .about-proof-card span {
  color: #3f3f49;
}

/* CTA */
.about-cta {
  text-align: center;
  padding: 5rem 0 6rem;
  background:
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(124, 105, 255, 0.2), transparent 65%),
    #070708;
}

.about-cta .enterprise-section-title {
  margin-bottom: 0.75rem;
}

.about-cta .enterprise-section-lead {
  margin: 0 auto 2rem;
  max-width: 36rem;
}

/* Responsive */
@media (max-width: 1100px) {
  .about-philosophy-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-principles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-proof-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 960px) {
  .about-hero__inner {
    grid-template-columns: 1fr;
  }

  .about-infra-visual {
    min-height: 22rem;
    max-width: 28rem;
    margin: 0 auto;
  }

  .about-why-grid,
  .about-positioning {
    grid-template-columns: 1fr;
  }

  .about-build-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .about-philosophy-grid,
  .about-principles-grid,
  .about-proof-row {
    grid-template-columns: 1fr;
  }

  .about-arch-flow {
    flex-direction: column;
    align-items: stretch;
  }

  .about-arch-arrow {
    transform: rotate(90deg);
    align-self: center;
  }

  .about-infra-panel {
    width: 42%;
  }

  .about-infra-panel--analytics {
    left: 8%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-infra-visual,
  .about-infra-hub,
  .about-doc-chip,
  .about-infra-line,
  .about-mini-bars span {
    animation: none;
  }
}