/* ============================================
   COOPERATION SECTION
   Light bg, section opener + partner logo grid
   ============================================ */

.cooperation {
  position: relative;
  background: #fff;
  padding: var(--spacing-section) 0;
  overflow: hidden;
}

.cooperation__inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--margin);
}


/* --- Vertical Sidebar Label --- */
.cooperation__sidebar-label {
  position: absolute;
  right: clamp(12px, 2vw, 32px);
  top: 50%;
  transform: rotate(180deg);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-light-gray);
  z-index: 1;
  user-select: none;
}


/* --- Decorative Ring --- */
.cooperation__shapes {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.cooperation__ring {
  position: absolute;
  width: clamp(140px, 20vw, 300px);
  aspect-ratio: 1;
  border: clamp(12px, 2vw, 28px) solid var(--color-teal-blue);
  border-radius: 50%;
  bottom: -8%;
  left: -5%;
  opacity: 0.06;
}


/* --- Section Opener (2-col: title + intro) --- */
.cooperation__opener {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: end;
  margin-bottom: var(--spacing-xxl);
}

.cooperation__title-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.cooperation__label {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-teal-blue);
}

.cooperation__headline {
  display: flex;
  flex-direction: column;
}

.cooperation__headline span {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: clamp(40px, 7vw, 88px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--color-midnight-indigo);
}

.cooperation__intro-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
}

.cooperation__lead {
  font-family: var(--font-sub);
  font-weight: var(--fw-medium);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.3;
  color: var(--color-teal-blue);
}

.cooperation__body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-urban-gray);
  max-width: 480px;
}


/* --- Partner Logo Grid --- */
.cooperation__logos {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.cooperation__logo-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--color-light-gray);
  border-radius: var(--radius-card);
  border: 1px solid transparent;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast);
}

.cooperation__logo-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-light);
  border-color: rgba(10, 158, 157, 0.2);
}

.cooperation__logo-card img {
  width: 100%;
  max-width: 140px;
  height: 100px;
  object-fit: contain;
}

.cooperation__logo-name {
  font-family: var(--font-sub);
  font-weight: var(--fw-medium);
  font-size: 15px;
  color: var(--color-midnight-indigo);
  text-align: center;
}


/* --- Responsive --- */
@media (max-width: 1024px) {
  .cooperation__opener {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .cooperation__sidebar-label {
    display: none;
  }
}

@media (max-width: 768px) {
  .cooperation {
    padding: var(--spacing-xxl) 0;
  }

  .cooperation__logos {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .cooperation__logo-card {
    flex-direction: row;
    padding: var(--spacing-md);
  }

  .cooperation__logo-card img {
    max-width: 80px;
    height: 64px;
  }

  .cooperation__headline span {
    font-size: clamp(36px, 12vw, 56px);
  }
}