/* ============================================================
   sections/hero.css – Hero chuẩn doanh nghiệp, uy tín & tinh tế
   ============================================================ */

.hero {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: center;
  padding-top: 96px;
  padding-bottom: 70px;
  overflow: hidden;
  background-color: var(--brand-navy-dark);
}

/* Background Image & Overlay */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  transform: scale(1.02);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(7, 26, 78, 0.94) 0%,
    rgba(10, 37, 107, 0.84) 45%,
    rgba(15, 23, 42, 0.86) 100%
  );
}

/* Hero Content */
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

/* Headline */
.hero-title {
  font-family: var(--font-sans);
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-title .highlight {
  color: #38BDF8;
  position: relative;
  display: inline;
  font-weight: 800;
  text-shadow: 0 0 30px rgba(56, 189, 248, 0.35);
}

/* Subtitle */
.hero-sub {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: #E2E8F0;
  margin-bottom: 36px;
  max-width: 720px;
}

/* CTA Row */
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

/* Scroll Hint Indicator */
.hero-scroll-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0.7;
}

.hero-scroll-hint span {
  display: block;
  width: 20px;
  height: 32px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 12px;
  position: relative;
}

.hero-scroll-hint span::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 6px;
  background: #38BDF8;
  border-radius: 2px;
  animation: scroll-bounce 1.8s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0% { transform: translate(-50%, 0); opacity: 1; }
  50% { transform: translate(-50%, 8px); opacity: 0.4; }
  100% { transform: translate(-50%, 0); opacity: 1; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (min-width: 768px) {
  .hero {
    min-height: 90vh;
    padding-top: 110px;
    padding-bottom: 80px;
  }

  .hero-title {
    font-size: 44px;
    line-height: 1.22;
  }

  .hero-sub {
    font-size: 18px;
  }
}

@media (min-width: 1024px) {
  .hero {
    min-height: 92vh;
    padding-top: 130px;
  }

  .hero-title {
    font-size: 50px;
    letter-spacing: -0.025em;
  }
}