/* Drone Process Section — scoped under .dproc-root */

.dproc-root {
  --dproc-accent: #e60012;
  --dproc-text: #111111;
  --dproc-muted: #555555;
  --dproc-white: #ffffff;
  --dproc-border: #ebebeb;
  --dproc-icon-bg: #f0f0f0;
  --dproc-radius: 14px;
  --dproc-card-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  --dproc-gap: 12px;
  --dproc-arrow-size: 28px;
  --dproc-icon-circle: 88px;
  --dproc-icon-inner: 56px;
  --dproc-number-size: 2rem;
  --dproc-title-size: 1rem;
  --dproc-desc-size: 0.8125rem;
  --dproc-footer-size: 0.9375rem;
  --dproc-padding-y: 56px;
  --dproc-padding-x: 40px;
  --dproc-fade-distance: 1.25rem;
  --dproc-fade-duration: 0.55s;
  --dproc-fade-stagger: 0.1s;

  width: 100%;
  max-width: 100%;
  padding: var(--dproc-padding-y) var(--dproc-padding-x);
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--dproc-text);
  line-height: 1.5;
  background: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

.dproc-root *,
.dproc-root *::before,
.dproc-root *::after {
  box-sizing: border-box;
}

.dproc-root h3,
.dproc-root p {
  margin: 0;
  padding: 0;
}

.dproc-root img {
  display: block;
  max-width: 100%;
  border: 0;
}

.dproc-root .dproc-inner {
  width: 100%;
  max-width: 100%;
}

/* ── Track (cards + arrows) ── */
.dproc-root .dproc-track {
  display: flex;
  align-items: stretch;
  width: 100%;
  gap: 0;
}

/* ── Step card ── */
.dproc-root .dproc-step {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  min-width: 0;
  padding: 28px 16px 24px;
  text-align: center;
  background: var(--dproc-white);
  border: 1px solid var(--dproc-border);
  border-radius: var(--dproc-radius);
  box-shadow: var(--dproc-card-shadow);
  opacity: 0;
  transform: translateY(var(--dproc-fade-distance));
  transition:
    opacity var(--dproc-fade-duration) ease,
    transform var(--dproc-fade-duration) ease;
  transition-delay: var(--dproc-fade-delay, 0s);
  will-change: opacity, transform;
}

.dproc-root .dproc-step.dproc-step--visible {
  opacity: 1;
  transform: translateY(0);
}

.dproc-root .dproc-step:nth-child(1) { --dproc-fade-delay: calc(var(--dproc-fade-stagger) * 0); }
.dproc-root .dproc-step:nth-child(3) { --dproc-fade-delay: calc(var(--dproc-fade-stagger) * 1); }
.dproc-root .dproc-step:nth-child(5) { --dproc-fade-delay: calc(var(--dproc-fade-stagger) * 2); }
.dproc-root .dproc-step:nth-child(7) { --dproc-fade-delay: calc(var(--dproc-fade-stagger) * 3); }
.dproc-root .dproc-step:nth-child(9) { --dproc-fade-delay: calc(var(--dproc-fade-stagger) * 4); }

@media (prefers-reduced-motion: reduce) {
  .dproc-root .dproc-step {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── Step number ── */
.dproc-root .dproc-step__head {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 20px;
}

.dproc-root .dproc-step__number {
  font-size: var(--dproc-number-size);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--dproc-accent);
}

.dproc-root .dproc-step__number-line {
  display: block;
  width: 28px;
  height: 2px;
  margin-top: 8px;
  background: var(--dproc-accent);
  border-radius: 1px;
}

/* ── Icon circle ── */
.dproc-root .dproc-step__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: var(--dproc-icon-circle);
  height: var(--dproc-icon-circle);
  margin-bottom: 18px;
  background: var(--dproc-icon-bg);
  border-radius: 50%;
}

.dproc-root .dproc-step__icon img {
  width: var(--dproc-icon-inner);
  height: var(--dproc-icon-inner);
  object-fit: contain;
}

/* ── Text ── */
.dproc-root .dproc-step__title {
  font-size: var(--dproc-title-size);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.03em;
  color: var(--dproc-text);
  word-break: keep-all;
}

.dproc-root .dproc-step__desc {
  margin-top: 10px;
  font-size: var(--dproc-desc-size);
  font-weight: 400;
  line-height: 1.65;
  color: var(--dproc-muted);
  word-break: keep-all;
}

/* ── Arrow connector ── */
.dproc-root .dproc-arrow {
  position: relative;
  flex: 0 0 var(--dproc-arrow-size);
  align-self: center;
  width: var(--dproc-arrow-size);
  height: var(--dproc-arrow-size);
  margin: 0 4px;
  background: var(--dproc-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

.dproc-root .dproc-arrow::after {
  content: "›";
  position: absolute;
  top: 50%;
  left: 50%;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1;
  color: var(--dproc-white);
  transform: translate(-42%, -54%);
}

/* ── Footer ── */
.dproc-root .dproc-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 40px;
  text-align: center;
}

.dproc-root .dproc-footer__chevron {
  display: block;
  margin-bottom: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
  color: var(--dproc-accent);
  letter-spacing: -0.15em;
}

.dproc-root .dproc-footer__chevron::before {
  content: "››";
  display: inline-block;
  transform: rotate(90deg);
}

.dproc-root .dproc-footer__text {
  max-width: 640px;
  font-size: var(--dproc-footer-size);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: -0.02em;
  color: var(--dproc-muted);
  word-break: keep-all;
}

/* ── Tablet ── */
@media (max-width: 1100px) {
  .dproc-root {
    --dproc-padding-x: 28px;
    --dproc-number-size: 1.75rem;
    --dproc-icon-circle: 80px;
    --dproc-icon-inner: 50px;
    --dproc-title-size: 0.9375rem;
    --dproc-desc-size: 0.8125rem;
  }

  .dproc-root .dproc-track {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .dproc-root .dproc-step {
    flex: 1 1 calc(33.333% - 16px);
    min-width: 200px;
    max-width: calc(33.333% - 12px);
  }

  .dproc-root .dproc-arrow {
    display: none;
  }
}

/* ── Mobile ── */
@media (max-width: 680px) {
  .dproc-root {
    --dproc-padding-y: 40px;
    --dproc-padding-x: 20px;
    --dproc-number-size: 1.625rem;
    --dproc-icon-circle: 76px;
    --dproc-icon-inner: 48px;
    --dproc-title-size: 1rem;
    --dproc-desc-size: 0.875rem;
    --dproc-footer-size: 0.875rem;
  }

  .dproc-root .dproc-track {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .dproc-root .dproc-step {
    flex: none;
    width: 100%;
    max-width: 360px;
    padding: 24px 20px 22px;
  }

  .dproc-root .dproc-arrow {
    display: flex;
    flex: none;
    margin: 10px 0;
    transform: rotate(90deg);
  }

  .dproc-root .dproc-footer {
    margin-top: 32px;
  }
}

@media (max-width: 400px) {
  .dproc-root .dproc-step {
    max-width: 100%;
  }
}