/* ================= HEADER CORE ================= */
.site-header {
  width: 100%;
  background: #fff;
  border-bottom: 1px solid #eee;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;

  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* BRAND */
.brand {
  text-decoration: none;
  font-family: serif;
  font-size: 20px;
  letter-spacing: 2px;
  color: #000;
}

.brand-the {
  margin-right: 4px;
}

.brand-wann {
  font-weight: bold;
}

/* NAV */
.main-nav .nav-list {
  list-style: none;
  display: flex;
  gap: 24px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  text-decoration: none;
  font-size: 14px;
  color: #000;
}

.main-nav a.active {
  font-weight: bold;
  border-bottom: 2px solid #000;
}

/* ================= MOBILE ================= */
@media (max-width: 768px) {
  .header-inner {
    padding: 12px 16px;
  }

  .brand {
    font-size: 18px;
  }

  .main-nav .nav-list {
    gap: 14px;
    font-size: 13px;
  }
}
/* ================================
   MOBILE HEADER - SYNC ALL PAGES
================================ */
.site-header{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.12);
}

/* same spacing all pages */
.site-header .header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 14px;
}

/* logo left */
.site-header .brand{
  display: flex;
  align-items: baseline;
  gap: 6px;
  text-decoration: none;
  white-space: nowrap;
}

.site-header .brand-the{
  font-size: 14px;
  letter-spacing: .25em;
  opacity: .85;
}

.site-header .brand-wann{
  font-size: 22px;
  letter-spacing: .08em;
  font-weight: 700;
}

/* logo image center (nếu dùng) */
.site-header .header-logo{
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex: 0 0 auto;
}

/* nav right */
.site-header .main-nav{
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.site-header .nav-list{
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header .nav-list a{
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(255,255,255,.85);
  text-decoration: none;
  padding: 6px 0;
}

/* FIX: đẩy nội dung xuống để không bị header đè */
body{
  padding-top: 74px;
}

/* mobile tối ưu cho tất cả trang */
@media (max-width: 768px){
  .site-header .header-inner{
    padding: 12px 12px;
  }

  .site-header .nav-list{
    gap: 12px;
  }

  .site-header .nav-list a{
    font-size: 11px;
    letter-spacing: .18em;
  }
}