/* =========================
   Unified Premium Hero
========================= */

.hero-optitech {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  min-height: 78vh;

  color: #e6f6ff;

  background:
    linear-gradient(120deg, rgba(15,23,42,0.94), rgba(30,58,138,0.85)),
    url("../assets/img/linq2it-home.png") center right / cover no-repeat;
}

/* Soft light accent */
.hero-optitech::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 45%, rgba(255,255,255,0.08), transparent 60%);
  pointer-events: none;
}

/* Subtle tech grain */
.hero-optitech::before {
  content:"";
  position:absolute;
  inset:0;
  background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity:.22;
  pointer-events:none;
}

.hero-optitech .container {
  position: relative;
  z-index: 2;
  padding-top: 4rem;
  padding-bottom: 4rem;
}

/* -------------------------
   Typography & content
------------------------- */

.hero-title{
  font-size: clamp(2.6rem, 5vw, 3.85rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color:#e6f6ff;
  margin-bottom:1.4rem;
}

.hero-underline {
  position: relative;
  color: #ffffff;
}

.hero-underline:after{
  content:"";
  position:absolute;
  left:0;
  bottom:-8px;
  width:100%;
  height:5px;
  border-radius:4px;
  background: linear-gradient(90deg,#38bdf8,#0b5ed7);
}

.hero-subtext{
  max-width:560px;
  font-size:1.12rem;
  color:rgba(230,246,255,.78);
  margin-bottom:2.4rem;
}

.hero-actions{
  display:flex;
  gap:1.5rem;
  align-items:center;
  flex-wrap:wrap;
}

.hero-video-link{
  display:inline-flex;
  gap:.6rem;
  align-items:center;
  font-weight:600;
  color:#e6f6ff;
  text-decoration:none;
}

.play-icon{
  width:46px;
  height:46px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(230,246,255,.15);
  backdrop-filter: blur(6px);
  color:#ffffff;
  font-size:.85rem;
  box-shadow:0 10px 28px rgba(0,0,0,.25);
}

/* Navbar CTA polish */
.navbar .btn-primary{
  border-radius:999px;
  padding:.65rem 1.7rem;
  font-weight:600;
}

/* -------------------------
   Mobile optimization
------------------------- */

@media (max-width: 991px){
  .hero-optitech{
    min-height: auto;
    background:
      linear-gradient(120deg, rgba(15,23,42,0.97), rgba(30,58,138,0.92)),
      url("../assets/img/linq2it-home.png") center / cover no-repeat;
  }

  .hero-optitech .container{
    padding-top: 5rem;
    padding-bottom: 5rem;
  }

  .hero-title{
    font-size: 2.3rem;
  }
}

/* ===== Premium Glass Navbar ===== */

.nav-glass {
  background: transparent;
  padding: 1rem 0;
  transition: all .35s ease;
  z-index: 1000;
}

.nav-glass .navbar-brand {
  font-weight: 700;
  letter-spacing: .2px;
  color: #ffffff;
}

.nav-glass .nav-link {
  color: rgba(255,255,255,.85);
  font-weight: 500;
}

.nav-glass .nav-link:hover {
  color: #ffffff;
}

.nav-glass .btn-primary {
  box-shadow: 0 10px 25px rgba(11,94,215,.35);
}

/* On scroll */
.nav-glass.scrolled {
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0,0,0,.08);
}

.nav-glass.scrolled .navbar-brand,
.nav-glass.scrolled .nav-link {
  color: #0f172a;
}

.nav-glass.scrolled .nav-link:hover {
  color: #0b5ed7;
}

.nav-glass.scrolled .navbar-toggler {
  filter: invert(1);
}

/* Mobile menu polish */
@media (max-width: 991px) {
  .nav-glass {
    background: rgba(15,23,42,.95);
    backdrop-filter: blur(8px);
  }

  .nav-glass .navbar-collapse {
    padding-top: 1rem;
  }
}