.engineer-docs {
  background: var(--color-white);
  padding: var(--section-padding) 0;
}

.engineer-docs__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.engineer-docs__header {
  max-width: 780px;
  margin-bottom: 44px;
}

.engineer-docs__header .section-title {
  margin: 0;
  text-align: left;
}

.engineer-docs__groups {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.engineer-docs__group {
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  padding-top: 20px;
}

.engineer-docs__group-title {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 20px;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-dark);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.engineer-docs__group-title::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--color-accent);
}

.engineer-docs__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--color-gray-100);
}

.engineer-docs__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-sizing: border-box;
  min-width: 0;
  min-height: 220px;
  padding: 22px 22px 20px;
  background: var(--color-white);
  border-right: 1px solid var(--color-gray-100);
  transition: background 0.25s ease;
}

.engineer-docs__card:nth-child(3n) {
  border-right: none;
}

.engineer-docs__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.engineer-docs__card:hover {
  background: #f8f9fb;
}

.engineer-docs__card:hover::before {
  transform: scaleX(1);
}

.engineer-docs__card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  min-width: 0;
}

.engineer-docs__card-info {
  flex: 1;
  min-width: 0;
}

.engineer-docs__card-name {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.45;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.engineer-docs__card-meta {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--color-gray-400);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.engineer-docs__card-badge {
  flex-shrink: 0;
  box-sizing: border-box;
  min-width: 52px;
  height: 36px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  border: 1px solid currentColor;
}

.engineer-docs__card-badge--pdf {
  color: var(--color-accent);
  background: rgba(229, 65, 65, 0.06);
}

.engineer-docs__card-badge--dwg {
  color: var(--color-primary);
  background: rgba(24, 45, 151, 0.06);
}

.engineer-docs__download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  align-self: flex-start;
  margin-top: auto;
  min-height: 42px;
  padding: 10px 18px;
  background: transparent;
  border: 1px solid var(--color-dark);
  color: var(--color-dark);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
  max-width: 100%;
  box-sizing: border-box;
}

.engineer-docs__download-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

.engineer-docs__animate {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.engineer-docs__animate--visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .engineer-docs__grid {
    grid-template-columns: 1fr;
  }

  .engineer-docs__card {
    min-height: 0;
    border-right: none;
    border-bottom: 1px solid var(--color-gray-100);
  }

  .engineer-docs__card:last-child {
    border-bottom: none;
  }
}

@media (max-width: 600px) {
  .engineer-docs {
    padding: var(--section-padding-sm) 0;
  }

  .engineer-docs__container {
    padding: 0 var(--container-padding-mobile);
  }

  .engineer-docs__header {
    margin-bottom: 32px;
  }
}