.value-chain {
  position: relative;
  background-color: var(--color-dark-charcoal);
  overflow-x: clip;
}

.value-chain__header {
  position: relative;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 120px var(--content-padding) 40px;
  text-align: center;
  box-sizing: border-box;
}

.value-chain__heading {
  font-family: 'Lexend Giga', sans-serif;
  font-size: clamp(26px, 2.8vw, 40px);
  font-weight: 500;
  color: var(--color-cyan);
  line-height: normal;
  margin: 0 auto 16px;
  max-width: 732px;
  letter-spacing: -0.09em;
}

.value-chain__subheading {
  font-family: 'Blinker', sans-serif;
  font-size: clamp(16px, 1.4vw, 20px);
  font-weight: 400;
  color: var(--color-white);
  line-height: normal;
  max-width: 732px;
  margin: 0 auto;
}

/* Figma 601:3245 — active 366×51 cyan, inactive 245/306/235 ×44 #5E5C5D */
.value-chain__tabs {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  width: 100%;
  max-width: 1156px;
  margin: 0 auto;
}

.value-chain__tab {
  height: 44px;
  padding: 3px 12px;
  font-family: 'Lexend Giga', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.09em;
  text-transform: uppercase;
  text-align: center;
  background: #5e5c5d;
  color: var(--color-cyan);
  border: none;
  transition: background var(--transition-fast), color var(--transition-fast), height var(--transition-fast);
  cursor: pointer;
  flex: 0 0 auto;
}

.value-chain__tab--mining { width: 366px; }
.value-chain__tab--beneficiation { width: 245px; }
.value-chain__tab--manufacturing { width: 306px; }
.value-chain__tab--delivering { width: 235px; }

.value-chain__tab.active {
  width: 366px;
  height: 51px;
  padding-bottom: 3px;
  font-size: 20px;
  letter-spacing: -0.09em;
  background: var(--color-cyan);
  color: #231f20;
}

.value-chain__tab:hover:not(.active) {
  background: #6c6a6b;
}

.value-chain__content {
  position: relative;
  min-height: 624px;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-dark-charcoal);
}

.value-chain__content-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center;
  display: block;
  z-index: 0;
  transition: opacity var(--transition-medium);
  pointer-events: none;
}

.value-chain__content-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.4) 0%,
    rgba(0, 0, 0, 0.1) 16%,
    transparent 40%,
    transparent 70%,
    rgba(0, 0, 0, 0.35) 100%
  );
  pointer-events: none;
}

.value-chain__description {
  position: relative;
  z-index: 2;
  font-family: 'Blinker', sans-serif;
  font-size: 20px;
  font-weight: 400;
  color: var(--color-white);
  text-align: center;
  max-width: 632px;
  line-height: normal;
  padding: 42px var(--content-padding) 0;
  margin: 0 auto;
  box-sizing: border-box;
}

.value-chain__cta-wrap {
  position: relative;
  z-index: 2;
  margin-top: auto;
  padding: 28px var(--content-padding) 80px;
  width: 100%;
  display: flex;
  justify-content: center;
  box-sizing: border-box;
}

@media (max-width: 1199px) {
  .value-chain__tabs {
    flex-wrap: wrap;
    padding: 0 var(--content-padding);
  }

  .value-chain__tab,
  .value-chain__tab--mining,
  .value-chain__tab--beneficiation,
  .value-chain__tab--manufacturing,
  .value-chain__tab--delivering {
    flex: 1 1 auto;
    width: auto;
  }

  .value-chain__tab.active {
    width: auto;
  }
}

@media (max-width: 1024px) {
  .value-chain__tab {
    padding: 3px 8px;
    font-size: 10px;
    letter-spacing: 0.1em;
  }

  .value-chain__tab.active {
    font-size: 14px;
  }

  .value-chain__content {
    min-height: clamp(420px, 58vh, 640px);
  }
}

@media (max-width: 480px) {
  .value-chain__tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .value-chain__tab {
    font-size: 11px;
    letter-spacing: 0.12em;
  }

  .value-chain__description {
    text-align: left;
    padding-left: var(--content-offset);
    padding-right: var(--content-padding);
    max-width: none;
  }
}