/* ==========================================================================
   Header / Navigation — glass pill nav, Material style
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  padding-top: 14px;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid rgba(255,255,255,.6);
  border-radius: var(--r-pill);
  padding: 10px 12px 10px 20px;
  box-shadow: var(--el-2);
  transition: box-shadow .3s ease, padding .3s ease, background .3s ease;
}

.site-header.is-scrolled .site-header__inner {
  box-shadow: var(--el-3);
  background: rgba(255,255,255,.92);
}

.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.brand::before {
  content: "D";
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-sm);
  background: var(--grad-primary);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  box-shadow: var(--el-glow-primary);
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--clr-ink-900);
  display: block;
}

.brand__di { color: var(--clr-primary-600); }
.brand__india { color: var(--clr-accent-500); }

.brand__tagline {
  margin-top: 1px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--clr-ink-400);
  text-transform: uppercase;
  display: block;
}

.main-nav {
  min-width: 0;
  flex-shrink: 0;
}

.main-nav ul {
  display: flex;
  gap: 2px;
  background: var(--clr-surface-alt);
  padding: 5px;
  border-radius: var(--r-pill);
}

.main-nav li { flex-shrink: 0; }

.main-nav a {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--clr-ink-600);
  padding: 9px 14px;
  border-radius: var(--r-pill);
  display: block;
  white-space: nowrap;
  transition: background .2s ease, color .2s ease;
}

.main-nav a:hover { color: var(--clr-primary-600); }

.main-nav a.active {
  background: #fff;
  color: var(--clr-primary-700);
  box-shadow: var(--el-1);
}

.header-cta { padding: 12px 22px; font-size: 13.5px; flex-shrink: 0; white-space: nowrap; }

.brand__tagline { white-space: nowrap; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-xs);
}
.nav-toggle span {
  width: 20px; height: 2px;
  background: var(--clr-ink-900);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }