/* ===============================
   STEPPER / TIMELINE COMPONENT
   =============================== */

.stepper {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: var(--spacing-2xl);
}

.stepper::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.stepper__item {
  position: relative;
  padding-bottom: var(--spacing-2xl);
}

.stepper__item:last-child {
  padding-bottom: 0;
}

.stepper__dot {
  position: absolute;
  left: calc(-1 * var(--spacing-2xl) + 7px);
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  border: 3px solid var(--color-background);
  z-index: 1;
  transition:
    background var(--transition-normal),
    box-shadow var(--transition-normal);
}

.stepper__item--active .stepper__dot {
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.2);
}

.stepper__item--completed .stepper__dot {
  background: var(--color-success);
}

.stepper__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.stepper__desc {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Horizontal variant */
.stepper--horizontal {
  flex-direction: row;
  padding-left: 0;
  justify-content: space-between;
}

.stepper--horizontal::before {
  left: 0;
  right: 0;
  top: 15px;
  bottom: auto;
  width: auto;
  height: 2px;
}

.stepper--horizontal .stepper__item {
  flex: 1;
  padding-bottom: 0;
  padding-top: var(--spacing-2xl);
  text-align: center;
}

.stepper--horizontal .stepper__dot {
  left: 50%;
  top: calc(-1 * var(--spacing-2xl) + 7px);
  transform: translateX(-50%);
}

@media (max-width: 768px) {
  .stepper--horizontal {
    flex-direction: column;
    padding-left: var(--spacing-2xl);
  }

  .stepper--horizontal::before {
    left: 15px;
    right: auto;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
  }

  .stepper--horizontal .stepper__item {
    padding-top: 0;
    padding-bottom: var(--spacing-2xl);
    text-align: left;
  }

  .stepper--horizontal .stepper__dot {
    left: calc(-1 * var(--spacing-2xl) + 7px);
    top: 4px;
    transform: none;
  }
}