/* ==============================================================================
   File: css/about.css
   Project: FAM AI Connect
   Version: 1.0.0
   Date: 2026-09-18

   About Carey — MACAS™ and CAaaS™ (page-specific styles)
   Loads after css/styles.css and css/pages.css. Every rule is scoped to
   body.about-page so nothing here leaks into other pages.
   ============================================================================== */

.about-page {
  --about-max: 1440px;
  --about-gutter: 44px;
  --about-soft: #e7f4f3;
  --about-ink: #526c74;
  --about-border: rgba(7, 57, 70, 0.14);
  --about-accent: #087f7e;
  --about-radius: 28px;
  --font-display: Manrope, Inter, Arial, sans-serif;
  --font-body: Inter, Manrope, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  font-family: var(--font-body);
  background: #ffffff;
}

.about-page :focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 3px;
}

/* ---------------------------------------------------------------
   Navigation (Carey nav variant)
--------------------------------------------------------------- */

.about-page .nav {
  max-width: var(--about-max);
  padding: 18px var(--about-gutter);
}

.about-page .brand {
  gap: 16px;
}

.about-page .brand img {
  height: 38px;
  width: auto;
  max-width: 150px;
}

.about-page .brand-divider {
  width: 1px;
  height: 34px;
  background: var(--about-border);
}

.about-page .brand-product {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--about-accent);
}

.about-page .links {
  gap: 4px;
  font-weight: 500;
}

.about-page .links a:not(.btn) {
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--muted);
  font-size: 1.03rem;
  white-space: nowrap;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.about-page .links a:not(.btn):hover {
  color: var(--teal-dark);
  background: rgba(14, 167, 165, 0.07);
}

.about-page .links a.is-active {
  color: var(--text);
  background: var(--soft);
}

.about-page .links .btn {
  margin-left: 14px;
}

/* ---------------------------------------------------------------
   Shared primitives
--------------------------------------------------------------- */

.about-page .wrap {
  max-width: var(--about-max);
  margin: 0 auto;
}

.about-page .btn {
  padding: 17px 28px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.about-page .links .btn {
  padding: 14px 24px;
  font-size: 1rem;
}

.btn-arrow {
  margin-left: 0.3em;
  font-family: var(--font-body);
  font-weight: 600;
}

.about-eyebrow,
.about-pill,
.model-tag,
.step-num,
.about-fineprint,
.service-label {
  font-family: var(--font-mono);
}

.about-eyebrow {
  margin: 0 0 14px;
  color: var(--about-ink);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.about-title {
  max-width: 1060px;
  margin-bottom: 42px;
}

.about-title.is-wide {
  max-width: none;
}

.about-title h2,
.about-cta h2 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 3.2vw, 3.1rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.about-title > p:not(.about-eyebrow) {
  max-width: 900px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 1.51vw, 1.44rem);
  line-height: 1.62;
}

.about-fineprint {
  margin: 40px 0 0;
  color: var(--about-ink);
  font-size: 0.875rem;
  line-height: 1.7;
}

.about-section {
  padding: 112px var(--about-gutter);
  border-top: 1px solid rgba(7, 57, 70, 0.1);
  background: #ffffff;
}

.about-section.is-cream {
  background: var(--cream);
}

.about-section.is-soft {
  background: var(--about-soft);
}

/* ---------------------------------------------------------------
   Hero
--------------------------------------------------------------- */

.about-hero {
  padding: 126px var(--about-gutter);
  background:
    radial-gradient(circle at 78% 12%, rgba(14, 167, 165, 0.16), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, var(--cream) 100%);
}

.about-hero-inner {
  max-width: var(--about-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 80px;
  align-items: center;
}

.about-pill {
  display: inline-flex;
  align-items: center;
  margin: 0 0 34px;
  padding: 12px 20px;
  border: 1px solid rgba(14, 167, 165, 0.32);
  border-radius: 999px;
  background: rgba(14, 167, 165, 0.1);
  color: var(--teal-dark);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.about-hero h1 {
  margin: 0;
  color: var(--navy);
  font-family: var(--font-display);
  font-size: clamp(3.1rem, 6.27vw, 6rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.about-hero h1 span {
  display: block;
  color: var(--teal);
}

.about-lead {
  max-width: 740px;
  margin: 30px 0 28px;
  color: var(--muted);
  font-size: clamp(1.1rem, 1.51vw, 1.44rem);
  line-height: 1.62;
}

/* Diagram card */

.spine-diagram {
  position: relative;
  margin: 0;
  aspect-ratio: 590 / 446;
  overflow: hidden;
  border: 1px solid rgba(7, 57, 70, 0.1);
  border-radius: var(--about-radius);
  background:
    radial-gradient(circle at 20% 10%, rgba(14, 167, 165, 0.12), transparent 45%),
    linear-gradient(160deg, #eef8f6 0%, #f7fcfb 55%, #ffffff 100%);
  box-shadow: var(--shadow);
}

.spine-rings {
  position: absolute;
  inset: 0;
}

.spine-rings .ring,
.spine-core {
  position: absolute;
  left: 50%;
  top: 60%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  aspect-ratio: 1;
}

.spine-rings .ring {
  border: 1px solid rgba(14, 167, 165, 0.3);
}

.spine-rings .ring-1 {
  width: 39.5%;
}

.spine-rings .ring-2 {
  width: 51.5%;
  border-color: rgba(14, 167, 165, 0.24);
}

.spine-rings .ring-3 {
  width: 64%;
  border-color: rgba(14, 167, 165, 0.18);
}

.spine-core {
  width: 30.6%;
  display: grid;
  place-content: center;
  gap: 26px;
  text-align: center;
  color: #ffffff;
  background: linear-gradient(160deg, var(--teal) 0%, var(--teal-dark) 100%);
  box-shadow: 0 22px 46px rgba(8, 127, 126, 0.3);
}

.spine-core strong {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2vw, 1.9rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.spine-core small {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.spine-callout {
  position: absolute;
  width: 30%;
  max-width: 190px;
  padding: 16px 18px;
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 14px 36px rgba(7, 57, 70, 0.12);
}

.spine-callout strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 600;
}

.spine-callout span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.callout-cloud {
  top: 9%;
  right: 4.8%;
}

.callout-device {
  left: 4.8%;
  bottom: 16.5%;
}

/* ---------------------------------------------------------------
   Two service classes
--------------------------------------------------------------- */

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.service-card {
  position: relative;
  overflow: hidden;
  padding: 48px 52px;
  border: 1px solid var(--about-border);
  border-radius: var(--about-radius);
  background: var(--cream);
}

.service-card::after {
  content: "";
  position: absolute;
  right: -96px;
  bottom: -118px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(14, 167, 165, 0.14);
  pointer-events: none;
}

.service-mark {
  margin: 0 0 30px;
  color: var(--about-accent);
  font-family: var(--font-display);
  font-size: clamp(3rem, 5.1vw, 4.9rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.06em;
}

.service-label {
  margin: 0 0 24px;
  color: var(--about-ink);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.service-role {
  margin: 0 0 20px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.service-desc {
  margin: 0 0 16px;
  color: var(--text);
  font-size: 1.36rem;
  line-height: 1.6;
}

.service-card ul {
  margin: 0;
  padding-left: 22px;
}

.service-card li {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 1.12rem;
  line-height: 1.5;
}

.service-card li:last-child {
  margin-bottom: 0;
}

.service-card li::marker {
  color: var(--muted);
}

/* ---------------------------------------------------------------
   The spine: five governed steps
--------------------------------------------------------------- */

.spine-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.spine-step {
  position: relative;
  padding: 30px 26px 24px;
  border: 1px solid var(--about-border);
  border-radius: 24px;
  background: #ffffff;
}

.spine-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -23px;
  z-index: 2;
  width: 30px;
  height: 14px;
  transform: translateY(-50%);
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 14' fill='none' stroke='%23087f7e' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 7h27M22.5 1.5 28 7l-5.5 5.5'/%3E%3C/svg%3E") center / contain no-repeat;
  pointer-events: none;
}

.step-num {
  display: block;
  margin-bottom: 10px;
  color: var(--teal-dark);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.spine-step h3 {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 1.17rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.spine-step p {
  margin: 0;
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.6;
}

/* ---------------------------------------------------------------
   Why this changes the model
--------------------------------------------------------------- */

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.model-card {
  padding: 32px 32px 28px;
  border-radius: 24px;
  background: var(--cream);
}

.model-tag {
  display: block;
  margin: 0 0 11px;
  padding: 7px 14px;
  border: 1px solid rgba(7, 57, 70, 0.14);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.model-card h3,
.control-card h3 {
  margin: 0 0 10px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.36rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.model-card p:last-child,
.control-card p {
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* ---------------------------------------------------------------
   Grounded in participant control
--------------------------------------------------------------- */

.control-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.control-card {
  padding: 32px 32px 28px;
  border: 1px solid var(--about-border);
  border-top: 3px solid var(--teal);
  border-radius: 24px;
  background: var(--cream);
}

.about-notice {
  margin: 40px 0 0;
  padding: 22px 26px;
  border: 1px solid #fbd491;
  border-radius: 12px;
  background: #fff3db;
  color: var(--text);
  font-size: 1.15rem;
  line-height: 1.7;
}

.about-notice strong {
  font-weight: 700;
}

/* ---------------------------------------------------------------
   Closing CTA
--------------------------------------------------------------- */

.about-cta {
  padding: 112px var(--about-gutter);
  border-top: 1px solid rgba(7, 57, 70, 0.1);
  background: var(--cream);
}

.about-cta-inner {
  max-width: 820px;
  margin: 0 auto;
}

.about-cta .about-eyebrow {
  margin-bottom: 28px;
}

.about-cta-lead {
  max-width: 820px;
  margin: 28px 0 30px;
  color: var(--muted);
  font-size: clamp(1.1rem, 1.51vw, 1.44rem);
  line-height: 1.62;
}

.about-cta .about-fineprint {
  max-width: 760px;
  margin-top: 30px;
}

/* ---------------------------------------------------------------
   Footer (Carey variant)
--------------------------------------------------------------- */

.about-footer {
  position: relative;
  padding: 60px var(--about-gutter) 52px;
  border-top: 1px solid rgba(7, 57, 70, 0.12);
  background: var(--about-soft);
  color: var(--muted);
}

.about-footer::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--teal);
}

.about-footer-inner {
  max-width: var(--about-max);
  margin: 0 auto;
}

.about-footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(7, 57, 70, 0.1);
}

.about-footer-col h3 {
  margin: 0 0 22px;
  color: var(--about-ink);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.about-footer-col p {
  max-width: 340px;
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.6;
}

.about-footer-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-footer-col li {
  margin: 0 0 10px;
}

.about-footer-col li:last-child {
  margin-bottom: 0;
}

.about-footer-col a {
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.6;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.about-footer-col a:hover {
  color: var(--teal-dark);
}

.about-footer-legal {
  padding-top: 36px;
}

.about-footer-legal p {
  margin: 0 0 14px;
  color: var(--about-ink);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}

.about-footer-legal p:last-child {
  margin-bottom: 0;
}

.about-footer-legal strong {
  font-weight: 600;
}

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

@media (max-width: 1360px) {
  .about-page .links {
    gap: 2px;
  }

  .about-page .links a:not(.btn) {
    padding: 10px 10px;
    font-size: 0.95rem;
  }

  .about-page .links .btn {
    margin-left: 8px;
    padding: 12px 20px;
    font-size: 0.95rem;
  }
}

@media (max-width: 1140px) {
  /* Same pattern styles.css uses below 980px: brand row on top, links scroll */
  .about-page .nav {
    flex-wrap: wrap;
    padding-top: 12px;
    padding-bottom: 6px;
  }

  .about-page .links {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding: 4px 0 8px;
    scrollbar-width: thin;
  }

  .about-hero {
    padding: 84px var(--about-gutter) 88px;
  }

  .about-hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .spine-diagram {
    max-width: 590px;
  }

  .spine-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .spine-step:not(:last-child)::after {
    display: none;
  }

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

@media (max-width: 980px) {
  .about-page {
    --about-gutter: 28px;
  }

  .about-hero {
    padding: 72px var(--about-gutter) 80px;
  }

  .about-section {
    padding: 84px var(--about-gutter);
  }

  .service-grid,
  .model-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    padding: 40px 36px 38px;
  }

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

  .about-cta {
    padding: 88px var(--about-gutter) 100px;
  }

  .about-footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px 28px;
  }
}

@media (max-width: 620px) {
  .about-page {
    --about-gutter: 20px;
  }

  .about-page .brand img {
    height: 32px;
  }

  .about-page .brand-divider {
    height: 26px;
  }

  .about-hero {
    padding: 56px var(--about-gutter) 64px;
  }

  .about-pill {
    padding: 10px 16px;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-align: left;
  }

  .about-hero h1 {
    font-size: clamp(2.6rem, 11.5vw, 3.6rem);
  }

  .about-lead {
    margin: 22px 0 28px;
  }

  .about-page .btn {
    padding: 15px 22px;
    font-size: 1rem;
  }

  /* Square diagram on phones so the callouts clear the core circle */
  .spine-diagram {
    aspect-ratio: 1 / 1.02;
    border-radius: 22px;
  }

  .spine-rings .ring,
  .spine-core {
    top: 50%;
  }

  .spine-rings .ring-1 {
    width: 52%;
  }

  .spine-rings .ring-2 {
    width: 68%;
  }

  .spine-rings .ring-3 {
    width: 84%;
  }

  .spine-core {
    width: 36%;
    gap: 12px;
  }

  .spine-core strong {
    font-size: 1.35rem;
  }

  .spine-core small {
    font-size: 0.55rem;
    letter-spacing: 0.12em;
  }

  .spine-callout {
    width: 46%;
    max-width: none;
    padding: 12px 14px;
    border-radius: 12px;
  }

  .spine-callout strong {
    margin-bottom: 4px;
    font-size: 0.95rem;
  }

  .spine-callout span {
    font-size: 0.8rem;
    line-height: 1.4;
  }

  .callout-cloud {
    top: 4.5%;
    right: 4.5%;
  }

  .callout-device {
    left: 4.5%;
    bottom: 4.5%;
  }

  .about-section {
    padding: 64px var(--about-gutter);
  }

  .about-title {
    margin-bottom: 36px;
  }

  .service-card {
    padding: 32px 24px 30px;
    border-radius: 22px;
  }

  .service-desc {
    font-size: 1.15rem;
  }

  .spine-steps,
  .control-grid {
    grid-template-columns: 1fr;
  }

  .spine-step,
  .model-card,
  .control-card {
    padding: 26px 22px;
  }

  .about-notice {
    padding: 18px 20px;
    font-size: 1rem;
  }

  .about-cta {
    padding: 72px var(--about-gutter) 80px;
  }

  .about-footer {
    padding: 56px var(--about-gutter) 44px;
  }

  .about-footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* Editorial line breaks in the big headlines (desktop and tablet only) */
@media (max-width: 720px) {
  .br-lg {
    display: none;
  }
}