* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  background: #ffffff;
  color: #393939;
}

/* ================= NAVBAR ================= */

.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  height: 72px;
  padding: 0 60px;
  background:#f9f9f9;
  color: #000000;
  display: flex;
  align-items: center;
  z-index: 1000; /* ABOVE OVERLAY */
  border-bottom: 1px solid rgb(218, 218, 218);
}

/* LOGO */
.nav-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 46px;
  height: 46px;
  background: #31546c;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  border-radius: 8px;
}


.brand-text {
  font-family: 'Poppins', sans-serif;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #1f2933;
}


/* ================= NAV MENU ================= */

.nav-menu {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 34px;
  z-index: 1100; /* 👈 ALWAYS ABOVE OVERLAY */
}

/* NAV ITEM */
.nav-item {
  position: relative;
  color: #000000;
  text-decoration: none;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
}


/* UNDERLINE */
.nav-item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: #0ea5a4;
  transition: width 0.25s ease;
}

.nav-item:hover::after,
.nav-item.active::after {
  width: 100%;
}

/* ================= HAMBURGER ================= */

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  margin-left: auto;
  cursor: pointer;
}

.hamburger span {
  width: 26px;
  height: 2px;
  background: #000000;
  display: block;
  transition: transform 0.3s ease, opacity 0.2s ease;
}

/* PERFECT X */
.hamburger.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ================= HERO ================= */

.hero {
  height: 100vh;
  background: #101010;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 120px;
  padding: 0 80px;
}

.hero-left {
  max-width: 560px;
  border-left: 3px solid rgba(14,165,164,0.6);
}

.hero-content {
  padding: 44px 0 44px 32px;
}

.tag {
  display: inline-block;
  font-size: 14px;
  opacity: 0.8;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 52px;
  line-height: 1.15;
  margin-bottom: 26px;
}

.hero-desc {
  margin-bottom: 38px;
}

.hero-desc p {
  font-size: 16px;
  line-height: 1.85;
}

.hero-buttons {
  display: flex;
  gap: 22px;
}

.btn {
  padding: 14px 28px;
  font-size: 15px;
  cursor: pointer;
}

.btn.primary {
  background: #31546c;
  border: none;
  color: #ffffff;
}

.btn.secondary {
  background: transparent;
  border: 1px solid #ffffff;
  color: #ffffff;
}

.hero-right {
  display: flex;
  justify-content: center;
}

.hero-gif {
  width: min(55vw, 620px);
  height: min(55vw, 620px);
  background: url("../assets/gif/NPHI.gif") center / contain no-repeat;
}

/* ================= OVERLAY ================= */

.menu-overlay {
  position: fixed;
  top: 72px;          /* 👈 START BELOW NAVBAR */
  left: 0;
  width: 100%;
  height: calc(100vh - 72px); /* 👈 REST OF SCREEN */
  background: rgba(0,0,0,0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease;
  z-index: 900;       /* below navbar & menu */
  
}

.menu-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* ICONS (DESKTOP) */
.nav-item .material-symbols-outlined {
  font-size: 20px;
  color: #777;
  transition: color 0.2s ease;
}

.nav-item:hover .material-symbols-outlined,
.nav-item.active .material-symbols-outlined {
  color: #0ea5a4;
}





/* ================= MOBILE ================= */
@media (max-width: 900px) {

  /* NAV ITEM (TEXT) */
  .nav-item {
    position: relative;
    text-decoration: none;
    font-size: 13px;          /* ✅ reduced text size */
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;                 /* tighter spacing */
    padding: 20px 0;
    color: white;
  }

  /* TEXT COLOR ONLY */
  .nav-item .nav-text {
    color: #e4e4e4;
  }

  /* ICON ONLY */
  .nav-item .material-symbols-outlined {
  font-size: 16px;   /* ✅ correct */
  color: #cccccc;
  transition: color 0.2s ease;
}


  /* ICON hover / active */
  .nav-item:hover .material-symbols-outlined,
  .nav-item.active .material-symbols-outlined {
    color: #2d6480;
  }

  /* NAVBAR */
  .navbar {
    padding: 0 20px;
  }

  /* HAMBURGER */
  .hamburger {
    display: flex;
  }

  /* MOBILE MENU */
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: #0f0f0f;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 32px;
    gap: 16px;
    display: none;
  }

  .nav-menu.open {
    display: flex;
  }

  /* HERO SECTION FIXES */
  .hero {
    flex-direction: column;
    gap: 40px;
    padding: 120px 24px 40px;
    height: auto;
  }

  .hero-left {
    border-left: none;
  }

  .hero-content {
    padding: 0;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-gif {
    width: 80vw;
    height: 80vw;
  }
}