/*
 * AH Digital — Homepage Interactive Expertise
 */

.ah-expertise {
  position: relative;
  padding-block: clamp(96px, 11vw, 168px);
  background: var(--ah-color-bg);
}

.ah-expertise__heading {
  max-width: 900px;
}

.ah-expertise__workspace {
  display: grid;
  grid-template-columns: minmax(260px, 0.38fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
  margin-block-start: clamp(56px, 7vw, 92px);
}

.ah-expertise__tabs {
  display: grid;
  align-content: start;
  border-block-start: 1px solid var(--ah-color-border);
}

.ah-expertise-tab {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  min-height: 84px;
  align-items: center;
  gap: 14px;
  border-block-end: 1px solid var(--ah-color-border);
  color: var(--ah-color-text-secondary);
  padding: 14px 4px;
  text-align: start;
  transition:
    color var(--ah-duration-base) var(--ah-ease-standard),
    padding-inline var(--ah-duration-base) var(--ah-ease-standard);
}

.ah-expertise-tab:hover,
.ah-expertise-tab:focus-visible {
  color: var(--ah-color-text);
}

.ah-expertise-tab.is-active {
  color: var(--ah-color-text);
  padding-inline-start: 10px;
}

.ah-expertise-tab__number {
  color: var(--ah-color-text-muted);
  font-family: var(--ah-font-mono);
  font-size: 0.6rem;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.ah-expertise-tab.is-active .ah-expertise-tab__number {
  color: var(--ah-color-brand);
}

.ah-expertise-tab__label {
  font-size: 0.9rem;
  font-weight: 680;
  letter-spacing: -0.01em;
}

.ah-expertise-tab__arrow {
  color: var(--ah-color-text-muted);
  opacity: 0;
  transform: translateX(-4px);
  transition:
    opacity var(--ah-duration-fast) var(--ah-ease-standard),
    transform var(--ah-duration-fast) var(--ah-ease-standard);
}

.ah-expertise-tab.is-active .ah-expertise-tab__arrow {
  opacity: 1;
  transform: none;
}

.ah-expertise__preview {
  min-width: 0;
}

.ah-expertise-panel {
  display: grid;
  min-height: 520px;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  align-items: stretch;
  gap: clamp(34px, 5vw, 66px);
  border: 1px solid var(--ah-color-border);
  border-radius: var(--ah-radius-xl);
  background:
    linear-gradient(
      145deg,
      color-mix(in srgb, var(--ah-color-brand) 3%, var(--ah-color-surface)),
      var(--ah-color-surface) 50%
    );
  padding: clamp(28px, 4vw, 52px);
}

.ah-expertise-panel[hidden] {
  display: none;
}

.ah-expertise-panel__copy {
  display: grid;
  align-content: center;
}

.ah-expertise-panel__kicker {
  margin-block-end: 18px;
  color: var(--ah-color-brand);
  font-family: var(--ah-font-mono);
  font-size: 0.6rem;
  font-weight: 650;
  letter-spacing: 0.1em;
}

.ah-expertise-panel h3 {
  max-width: 14ch;
  font-size: clamp(2rem, 3.4vw, 3.35rem);
  letter-spacing: -0.05em;
  line-height: 1.04;
}

.ah-expertise-panel__copy > p {
  max-width: 52ch;
  margin-block-start: 20px;
  color: var(--ah-color-text-secondary);
  font-size: 0.98rem;
  line-height: 1.72;
}

.ah-expertise-panel__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-block-start: 28px;
}

.ah-expertise-panel__tags span {
  border: 1px solid var(--ah-color-border);
  border-radius: var(--ah-radius-pill);
  color: var(--ah-color-text-secondary);
  font-family: var(--ah-font-mono);
  font-size: 0.57rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 7px 9px;
}

.ah-expertise-panel__system {
  align-self: center;
  overflow: hidden;
  min-height: 340px;
  border: 1px solid var(--ah-color-border);
  border-radius: var(--ah-radius-lg);
  background: var(--ah-color-surface-soft);
  box-shadow: var(--ah-shadow-md);
}

.ah-expertise-system__top {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-block-end: 1px solid var(--ah-color-border);
  color: var(--ah-color-text-muted);
  font-family: var(--ah-font-mono);
  font-size: 0.56rem;
  font-weight: 650;
  letter-spacing: 0.075em;
  padding-inline: 18px;
}

.ah-expertise-system__body {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  min-height: 285px;
}

.ah-expertise-system__rail {
  display: grid;
  grid-template-rows: 12px 1fr 12px 1fr 12px;
  align-items: center;
  justify-items: center;
  border-inline-end: 1px solid var(--ah-color-border);
  padding-block: 30px;
}

.ah-expertise-system__rail span {
  width: 9px;
  height: 9px;
  border: 1px solid var(--ah-color-border-strong);
  border-radius: 50%;
  background: var(--ah-color-surface);
}

.ah-expertise-system__rail span.is-active {
  border-color: var(--ah-color-brand);
  background: var(--ah-color-brand);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--ah-color-brand) 10%, transparent);
}

.ah-expertise-system__rail i {
  width: 1px;
  height: 100%;
  background: var(--ah-color-border);
}

.ah-expertise-system__content {
  display: grid;
  align-content: center;
  gap: 7px;
  padding: 30px;
}

.ah-expertise-system__content small {
  color: var(--ah-color-text-muted);
  font-family: var(--ah-font-mono);
  font-size: 0.52rem;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.ah-expertise-system__content strong {
  max-width: 22ch;
  color: var(--ah-color-text);
  font-size: 0.92rem;
  letter-spacing: -0.015em;
  line-height: 1.4;
}

.ah-expertise-system__line {
  width: 100%;
  height: 1px;
  margin-block: 15px;
  background: linear-gradient(
    90deg,
    var(--ah-color-border-strong),
    transparent
  );
}

.ah-expertise-system__line--signal {
  background: linear-gradient(
    90deg,
    var(--ah-color-brand),
    var(--ah-color-intelligence),
    transparent
  );
}

.ah-expertise__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-block-start: 32px;
  border-block-start: 1px solid var(--ah-color-border);
  padding-block-start: 24px;
}

.ah-expertise__footer p {
  max-width: 66ch;
  color: var(--ah-color-text-secondary);
  font-size: 0.9rem;
}

@media (max-width: 1023px) {
  .ah-expertise__workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .ah-expertise__tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border: 1px solid var(--ah-color-border);
    border-radius: var(--ah-radius-md);
    overflow: hidden;
  }

  .ah-expertise-tab {
    min-height: 72px;
    grid-template-columns: 1fr;
    gap: 5px;
    border: 0;
    border-inline-end: 1px solid var(--ah-color-border);
    padding: 12px;
  }

  .ah-expertise-tab:last-child {
    border-inline-end: 0;
  }

  .ah-expertise-tab.is-active {
    background: var(--ah-color-surface-soft);
    padding-inline-start: 12px;
  }

  .ah-expertise-tab__arrow {
    display: none;
  }

  .ah-expertise-panel {
    min-height: 470px;
    grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  }
}

@media (max-width: 767px) {
  .ah-expertise {
    padding-block: 78px;
  }

  .ah-expertise__workspace {
    margin-block-start: 48px;
  }

  .ah-expertise__tabs {
    display: flex;
    overflow-x: auto;
    border-radius: var(--ah-radius-md);
    scrollbar-width: thin;
  }

  .ah-expertise-tab {
    min-width: 150px;
    flex: 0 0 auto;
    border-inline-end: 1px solid var(--ah-color-border);
  }

  .ah-expertise-panel {
    min-height: 0;
    grid-template-columns: minmax(0, 1fr);
    border-radius: var(--ah-radius-lg);
    padding: 26px;
  }

  .ah-expertise-panel__system {
    min-height: 300px;
  }

  .ah-expertise__footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@supports not (color: color-mix(in srgb, black, white)) {
  .ah-expertise-panel {
    background: var(--ah-color-surface);
  }

  .ah-expertise-system__rail span.is-active {
    box-shadow: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ah-expertise-tab,
  .ah-expertise-tab__arrow {
    transition: none;
  }
}
/*
 * AH Digital — Interactive Expertise sticky desktop rail
 * Keeps the capability selector visible while the user moves through the section.
 */

@media (min-width: 1024px) {
  .ah-expertise__workspace {
    align-items: start;
  }

  .ah-expertise__tabs {
    position: sticky;
    inset-block-start: 116px;
    align-self: start;
    z-index: 2;
  }

  .ah-expertise__preview {
    align-self: start;
  }
}

/* Disable sticky where the layout becomes horizontal / touch-oriented. */
@media (max-width: 1023px) {
  .ah-expertise__tabs {
    position: static;
    inset-block-start: auto;
  }
}