/* ===== HERO ===== */
.hero {
  position: relative;
  height: 80vh;
  background: url("images/home/hero.jpg") center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
}

.hero-content {
  position: relative;
  text-align: center;
  color: #fff;
}

.hero-content h1 {
  font-size: 48px;
  margin-bottom: 10px;
}

.hero-content p {
  font-size: 18px;
  letter-spacing: 1px;
}

/* ===== CONTENT ===== */
.home-content {
  padding: 80px 10%;
}

.content-section {
  margin-bottom: 100px;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.content-grid.reverse {
  direction: rtl;
}
.content-grid.reverse > * {
  direction: ltr;
}

.content-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 16px;
}

.content-text h2 {
  color: #d4af37;
  font-size: 26px;
  margin-bottom: 16px;
}

.content-text p {
  line-height: 1.8;
  margin-bottom: 10px;
}

/* ===== MOBILE ===== */
@media (max-width: 900px) {
  .hero {
    height: 60vh;
  }

  .content-grid {
    grid-template-columns: 1fr;
  }

  .content-image img {
    height: 260px;
  }
}
header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 70px;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  z-index: 999;
}
body {
  padding-top: 70px;
}
.lang a {
  margin-left: 10px;
  font-size: 13px;
  color: #d4af37;
  text-decoration: none;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
}
.hero * {
  position: relative;
}
/* animation base */
.content-section {
  opacity: 0;
  transform: translateY(60px);
  transition: all 0.8s ease;
}

.content-section.show {
  opacity: 1;
  transform: translateY(0);
}
header nav a {
  margin-left: 32px;
  letter-spacing: 0.8px;
}
header .container {
  padding: 0 60px;
}
header .logo {
  margin-right: 60px;
}
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(6px);
  z-index: 999;
}

header .container {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  padding: 0 80px;

  display: flex;
  align-items: center;
  justify-content: space-between;
}
header .logo {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 1.2px;
  white-space: nowrap;
}
header nav {
  display: flex;
  align-items: center;
}

header nav a {
  margin-left: 36px;          /* 👈 GIÃN RÕ */
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1.5px;
  color: #fff;
  opacity: 0.85;
  transition: all 0.3s ease;
}

header nav a:hover {
  opacity: 1;
}
header .lang {
  display: flex;
  align-items: center;
}

header .lang a {
  margin-left: 16px;
  font-size: 12px;
  letter-spacing: 1px;
  opacity: 0.7;
}

header .lang a:hover {
  opacity: 1;
}
body {
  padding-top: 72px;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
}

.hamburger span {
  width: 26px;
  height: 2px;
  background: #fff;
  transition: 0.3s;
}
@media (max-width: 768px) {

  header nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background: rgba(0,0,0,0.95);

    flex-direction: column;
    justify-content: center;
    align-items: center;

    transform: translateX(100%);
    transition: transform 0.4s ease;
  }

  header nav.active {
    transform: translateX(0);
  }

  header nav a {
    margin: 20px 0;
    font-size: 18px;
    letter-spacing: 2px;
  }

  .hamburger {
    display: flex;
  }
}
.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}
header.scrolled {
  background: rgba(0,0,0,0.95);
  box-shadow: 0 2px 12px rgba(0,0,0,0.4);
}
@media (max-width: 768px) {
  header .lang {
    position: absolute;
    bottom: 40px;
    display: flex;
    gap: 24px;
  }

  header .lang a {
    font-size: 14px;
    letter-spacing: 2px;
    opacity: 0.85;
  }
}