/* ============================================
   DIFFERENTIALS — LJR Digital Studio
============================================ */

.differentials {
  padding: var(--section-gap) 0;
  background: var(--white);
}

.differentials__inner {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 80px;
  align-items: start;
}

/* ——— Intro Esquerda ——— */
.differentials__intro {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

@media (min-width: 1025px) {
  .differentials__intro {
    position: sticky;
    top: 108px;
  }
}

.differentials__headline {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--black);
  line-height: 1.15;
  letter-spacing: -0.5px;
  max-width: var(--title-max-width);
  margin-bottom: 20px;
  margin-top: 16px;
}

.differentials__sub {
  font-size: 16px;
  color: var(--gray-text);
  line-height: 1.65;
  max-width: var(--sub-max-width);
  margin-bottom: 36px;
}

/* ——— Grid de Cards ——— */
.differentials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
  align-items: stretch;
}

/* ——— Diff Card ——— */
.diff-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  border: 1px solid rgba(15, 23, 42, 0.07);
  border-bottom: 3px solid rgba(37, 99, 235, 0.30);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 0;
  height: 100%;
  transition: transform var(--trans-slow),
              box-shadow var(--trans-slow),
              border-color var(--trans-slow),
              border-bottom-color var(--trans-slow);
  cursor: default;
  position: relative;
  overflow: hidden;
}

/* Glow no hover */
.diff-card::after {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  background: var(--gradient-glow);
  opacity: 0;
  transition: opacity var(--trans-slow);
  pointer-events: none;
}

.diff-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(37, 99, 235, 0.12);
  border-bottom-color: var(--blue);
}

.diff-card:hover::after {
  opacity: 1;
}

/* ——— Ícone ——— */
.diff-card__icon {
  width: 48px;
  height: 48px;
  background: rgba(37, 99, 235, 0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--blue);
  transition: background var(--trans-base), transform var(--trans-base);
}

.diff-card__icon svg {
  width: 22px;
  height: 22px;
}

.diff-card:hover .diff-card__icon {
  background: var(--blue);
  color: var(--white);
  transform: scale(1.05);
}

/* ——— Título ——— */
.diff-card__title {
  font-size: var(--font-h3);
  font-weight: var(--weight-h3);
  color: var(--black);
  margin-bottom: 10px;
  line-height: var(--lh-h3);
  letter-spacing: var(--ls-h3);
}

/* ——— Descrição ——— */
.diff-card__desc {
  font-size: var(--font-body);
  font-weight: var(--weight-body);
  color: var(--gray-text);
  line-height: var(--lh-body);
}