/* ===== Site Header / Topbar ===== */

.topbar{
  position: sticky;
  top: 0;
  z-index: 2000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 22px;
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0,0,0,.05);
}

.left-box{
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.logo-link{
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.main-logo{
  width: 46px;
  height: 46px;
  object-fit: contain;
  display: block;
  border-radius: 12px;
}

.title-wrap{
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.main-title{
  font-size: 1.1rem;
  font-weight: 700;
  color: #1C1C1E;
}

.sub-title{
  font-size: .82rem;
  color: #6b7280;
  margin-top: 2px;
}

.right-box{
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  text-decoration: none;
  font-size: .92rem;
  font-weight: 600;
  color: #5b34b4;
  background: rgba(122, 62, 240, 0.08);
  border: 1px solid rgba(122, 62, 240, 0.14);
}

.hamburger{
  width: 42px;
  height: 42px;
  border: none;
  background: rgba(255,255,255,.7);
  border-radius: 12px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0 10px;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,.04);
}

.hamburger span{
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: #2c2c2e;
}

.sidebar{
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  max-width: 82vw;
  height: 100vh;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: -10px 0 30px rgba(0,0,0,.08);
  z-index: 2100;
  transition: right .28s ease;
  display: flex;
  flex-direction: column;
}

.sidebar.active{
  right: 0;
}

.sidebar-header{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 20px 16px;
  font-size: 1rem;
  font-weight: 700;
  color: #1C1C1E;
  border-bottom: 1px solid rgba(0,0,0,.05);
}

.close-sidebar{
  border: none;
  background: transparent;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  color: #333;
}

.sidebar ul{
  list-style: none;
  margin: 0;
  padding: 16px 0;
}

.sidebar li{
  margin: 0;
  padding: 0;
}

.sidebar a{
  display: block;
  padding: 14px 22px;
  color: #1f2937;
  text-decoration: none;
  font-size: .98rem;
  transition: background .2s ease, color .2s ease;
}

.sidebar a:hover{
  background: rgba(122,62,240,.06);
  color: #5b34b4;
}

.sidebar-mask{
  position: fixed;
  inset: 0;
  background: rgba(17,24,39,.24);
  opacity: 0;
  visibility: hidden;
  transition: .24s ease;
  z-index: 2050;
}

.sidebar-mask.active{
  opacity: 1;
  visibility: visible;
}

body.menu-open{
  overflow: hidden;
}

@media (max-width: 768px){
  .topbar{
    padding: 12px 14px;
  }

  .main-logo{
    width: 40px;
    height: 40px;
  }

  .main-title{
    font-size: 1rem;
  }

  .sub-title{
    font-size: .76rem;
  }
}