/* ═══════════════════════════════════════════════════════
   SECTION 1: HERO
   ═══════════════════════════════════════════════════════ */
.hero {
  position: relative;
  background: transparent;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(0, 0, 0, 0.15) 40%,
    rgba(0, 0, 0, 0.5) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100vh;
  padding: 0 5.2083vw;
  transition: opacity 0.3s ease;
}

#sec1.overlay-active .hero-content,
#sec1.overlay-active .hero-bottom {
  opacity: 0;
  pointer-events: none;
}

.hero-text {
  margin-bottom: 3.125vw;
}

.hero-sub {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.0417vw;
  color: rgba(255, 255, 255, 0.7);
  line-height: 2;
  letter-spacing: 0.03em;
}

.hero-brand {
  margin-top: 1.5625vw;
}

.hero-tagline {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.8333vw;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 0.5208vw;
  letter-spacing: 0.1em;
}

.hero-logo-main {
  font-family: var(--font-hero-brand);
  font-weight: 900;
  font-size: 5.2083vw;
  color: var(--text-white);
  letter-spacing: 0.12em;
  line-height: 0.9;
}

.hero-logo-sub {
  font-family: var(--font-hero-brand);
  font-weight: 300;
  font-size: 1.5625vw;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.45em;
  margin-top: 0.2604vw;
}

.hero-bottom {
  position: absolute;
  bottom: 3.5vw;
  right: 5.2083vw;
  z-index: 1;
  transition: opacity 0.3s ease;
}

/* Circular CTA */
.circle-cta {
  display: block;
  width: 7.2917vw;
  height: 7.2917vw;
  position: relative;
  cursor: pointer;
  border-radius: 50%;
  background: transparent;
  transition: background 0.5s ease;
}

.circle-cta:hover {
  background: var(--text-white);
}

.circle-cta-inner {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.circle-text {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  animation: rotateCircle 12s linear infinite;
}

.circle-text text {
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 13.5px;
  fill: var(--text-white);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: fill 0.5s ease;
}

.circle-cta:hover .circle-text text {
  fill: var(--bg-dark);
}

/* 중앙 한글 텍스트 — 기본 표시, 호버 시 숨김 */
.circle-center {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.8333vw;
  color: var(--text-white);
  text-align: center;
  line-height: 1.6;
  letter-spacing: 0.15em;
  position: relative;
  z-index: 1;
  opacity: 1;
  transition: opacity 0.4s ease;
}

.circle-cta:hover .circle-center {
  opacity: 0;
}

/* 중앙 화살표 — 기본 숨김, 호버 시 표시 */
.circle-arrow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.25vw;
  color: var(--bg-dark);
  z-index: 1;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.circle-cta:hover .circle-arrow {
  opacity: 1;
}

@keyframes rotateCircle {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ── Scroll Indicator ── */
.scroll-indicator {
  position: absolute;
  bottom: 4vh;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 5;
}

.scroll-text {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { top: -100%; }
  50% { top: 0; }
  100% { top: 100%; }
}

/* ── MOBILE ── */
@media (max-width: 768px) {
  .hero-content {
    padding: 0 6vw;
    justify-content: flex-end;
    padding-bottom: 20vw;
  }

  .hero-sub {
    font-size: 3.5vw;
    line-height: 1.8;
  }

  .hero-tagline {
    font-size: 2.8vw;
  }

  .hero-logo-main {
    font-size: 14vw;
  }

  .hero-logo-sub {
    font-size: 4.5vw;
  }

  .hero-bottom {
    bottom: 5vw;
    right: 6vw;
  }

  .circle-cta {
    width: 22vw;
    height: 22vw;
  }

  .circle-center {
    font-size: 2.5vw;
  }

  .circle-text text {
    font-size: 11px;
  }

  .scroll-indicator {
    bottom: 2vh;
  }
  .scroll-text {
    font-size: 8px;
    letter-spacing: 2px;
  }
  .scroll-line {
    height: 30px;
  }
}