.site-header{position:sticky;top:16px;z-index:50;margin-top:16px}
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:12px 14px 12px 32px;border:1px solid rgba(255,255,255,.08);
  background:rgba(35,47,65,.85);backdrop-filter:blur(24px);
  border-radius:999px;box-shadow:0 20px 60px rgba(0,0,0,.4)
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand b{font-size:17px;letter-spacing:2px;line-height:1}
.brand span{font-size:10px;color:rgba(255,255,255,.5);letter-spacing:2px;margin-top:6px}
.menu{display:flex;gap:32px;flex-wrap:wrap;justify-content:center}
.menu a{color:rgba(255,255,255,.8);font-size:15px;font-weight:500;transition:.2s;white-space:nowrap}
.menu a:hover,.menu a.active{color:#fff}
.actions{display:flex;align-items:center;gap:16px}

.lang-selector-wrap{position:relative}
.lang-selector{
  width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.1);
  display:grid;place-items:center;border:1px solid rgba(255,255,255,.15);cursor:pointer;
  transition:.2s;position:relative;z-index:2;
}
.lang-selector:hover{background:rgba(255,255,255,.15)}
.lang-selector img{width:20px;border-radius:2px;pointer-events:none}
.lang-dropdown{
  position:absolute;top:120%;right:0;background:rgba(35,47,65,.95);
  backdrop-filter:blur(24px);border:1px solid rgba(255,255,255,.1);
  border-radius:16px;padding:8px;display:flex;flex-direction:column;
  gap:4px;width:130px;opacity:0;visibility:hidden;
  transform:translateY(-10px);transition:.2s;z-index:100;
  box-shadow:0 10px 40px rgba(0,0,0,.4);
}
.lang-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}
.lang-dropdown a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;
  color:#fff;font-size:14px;text-decoration:none;border-radius:10px;transition:.2s;font-weight:400;
}
.lang-dropdown a:hover{background:rgba(255,255,255,.1)}
.lang-dropdown img{width:20px;border-radius:2px}

.btn-blue{
  display:inline-flex;align-items:center;justify-content:center;
  border:0;border-radius:999px;padding:14px 32px;font-weight:700;cursor:pointer;
  background:linear-gradient(90deg,#39bdf8,#0b8fcf);color:#fff;
  box-shadow:0 12px 30px rgba(11,143,207,.3);font-size:15px;transition:.2s
}
.btn-blue:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(11,143,207,.4)}

/* Hamburger */
.hamburger{
  display:none;width:42px;height:42px;border:1px solid rgba(255,255,255,.15);
  background:rgba(255,255,255,.08);border-radius:12px;cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:.2s
}
.hamburger:hover{background:rgba(255,255,255,.15)}
.hamburger span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile menu drawer */
.mobile-menu{
  display:none;position:absolute;top:calc(100% + 12px);left:0;right:0;
  background:rgba(35,47,65,.97);backdrop-filter:blur(24px);
  border:1px solid rgba(255,255,255,.1);border-radius:24px;
  padding:18px;flex-direction:column;gap:6px;
  box-shadow:0 20px 60px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(-10px);transition:.25s;
  max-height:calc(100vh - 120px);overflow-y:auto;
}
.mobile-menu.open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-menu a{
  color:rgba(255,255,255,.85);padding:14px 18px;border-radius:14px;
  font-size:16px;font-weight:500;transition:.2s;text-decoration:none
}
.mobile-menu a:hover,.mobile-menu a.active{background:rgba(255,255,255,.08);color:#fff}
.mobile-menu .mobile-book{
  text-align:center;margin-top:8px;color:#fff;font-weight:700;
  background:linear-gradient(90deg,#39bdf8,#0b8fcf);
  box-shadow:0 8px 24px rgba(11,143,207,.3)
}

@media(max-width:900px){
  .menu{display:none}
  .book-btn{display:none}
  .hamburger{display:flex}
  .mobile-menu{display:flex}
  .site-header{top:10px;margin-top:10px}
  .nav{padding:8px 10px 8px 16px;gap:10px}
  .brand-text{display:none}
  .brand img{height:40px}
  .actions{gap:10px}
}

@media(max-width:480px){
  .site-header{top:8px;margin-top:8px}
  .nav{padding:6px 8px 6px 12px;gap:8px;border-radius:18px}
  .brand img{height:34px}
  .lang-selector{width:34px;height:34px}
  .lang-selector img{width:18px}
  .hamburger{width:38px;height:38px}
  .actions{gap:8px}
  .mobile-menu{border-radius:18px;padding:14px}
  .mobile-menu a{font-size:15px;padding:12px 14px}
}