/* ============================================
   GLOBAL — Internationalization showcase (dark card)
   ============================================ */

.section--global {
  padding: var(--space-2xl) var(--container-padding);
  position: relative;
  min-height: auto;
}

/* Floating dark card */
.global-card {
  background: var(--color-bg-dark);
  border-radius: 20px;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
  color: var(--color-text-dark);
  overflow: hidden;
  position: relative;
  box-shadow: 0 4px 60px rgba(0, 0, 0, 0.1);
}

/* Subtle grid texture inside card */
.global-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.03) var(--grid-line-width), transparent var(--grid-line-width)),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) var(--grid-line-width), transparent var(--grid-line-width));
  background-size: var(--grid-gap) var(--grid-gap);
  border-radius: 20px;
  pointer-events: none;
  z-index: 0;
}

.global-card .section-label {
  color: rgba(255, 255, 255, 0.5);
  border-bottom-color: rgba(255, 255, 255, 0.2);
}

.global-header {
  text-align: center;
  margin: 0 auto var(--space-xl);
  position: relative;
  z-index: 1;
}

.global-heading {
  font-family: var(--font-header);
  font-size: clamp(36px, 5vw, 72px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--color-text-dark);
  margin-top: var(--space-md);
}

.global-content {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  z-index: 1;
}

/* Languages column */
.global-languages {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.global-languages-label {
  margin-bottom: var(--space-sm);
  color: rgba(255, 255, 255, 0.6);
}

.global-lang {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s var(--ease-out-expo),
              transform 0.6s var(--ease-out-expo);
}

.global-lang.is-revealed {
  opacity: 1;
  transform: translateX(0);
}

.global-lang:last-child {
  border-bottom: none;
}

.global-lang-native {
  font-family: var(--font-header);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-dark);
  min-width: 100px;
}

.global-lang-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
}

/* Vertical divider */
.global-divider {
  width: 1px;
  background: rgba(255, 255, 255, 0.15);
}

/* Units column */
.global-units {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.global-units-label {
  margin-bottom: var(--space-sm);
  color: rgba(255, 255, 255, 0.6);
}

.global-unit-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.6s var(--ease-out-expo),
              transform 0.6s var(--ease-out-expo);
}

.global-unit-group.is-revealed {
  opacity: 1;
  transform: translateX(0);
}

.global-unit-type {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
}

.global-unit-options {
  display: flex;
  gap: var(--space-sm);
}

.global-unit-option {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-dark);
  padding: 8px 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  transition: border-color 0.3s, color 0.3s, background 0.3s;
}

.global-unit-option:hover,
.global-unit-option.is-active {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.global-unit-option.is-active {
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
}

/* Responsive */
@media (max-width: 768px) {
  .section--global {
    padding: var(--space-xl) var(--container-padding);
  }

  .global-card {
    padding: var(--space-xl) var(--space-lg);
    border-radius: 16px;
  }

  .global-content {
    grid-template-columns: 1fr;
  }

  .global-divider {
    width: 100%;
    height: 1px;
  }

  .global-languages,
  .global-units {
    padding: var(--space-lg);
  }

  .global-lang-native {
    font-size: 20px;
  }
}