/* ============================================
   mobile-nav.css — 移动端汉堡菜单（<900px 启用）
   ============================================ */

.mobile-nav{
  position:fixed;top:0;left:0;right:0;z-index:10000;
  background:rgba(244,236,216,0.95);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--gold-light);
  padding:14px 20px;
  display:none;align-items:center;justify-content:space-between;
}
.mobile-nav-logo{
  font-family:'Cinzel Decorative',serif;font-size:18px;font-weight:700;letter-spacing:0.3em;
  background:linear-gradient(180deg,var(--gold-pale),var(--gold-bright),var(--gold));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  outline:none;-webkit-tap-highlight-color:transparent;
}
.mobile-nav-toggle{
  position:relative;z-index:2;width:36px;height:36px;display:flex;flex-direction:column;justify-content:center;gap:5px;
  background:none;border:1px solid var(--gold-light);padding:0 8px;cursor:pointer;
  transition:all 0.3s;
  outline:none;-webkit-tap-highlight-color:transparent;
}
.mobile-nav-toggle:hover{border-color:var(--gold-bright)}
.mobile-nav-toggle:focus{outline:none;box-shadow:0 0 8px var(--gold-bright)}
.mobile-nav-toggle:focus:not(:focus-visible){box-shadow:none}
.mobile-nav-toggle:focus-visible{outline:none;box-shadow:0 0 10px var(--gold-bright),0 0 18px rgba(var(--gold-rgb), 0.4)}
.mobile-nav-toggle span{display:block;height:2px;background:var(--ink);transition:all 0.3s}
.mobile-nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mobile-nav-toggle.active span:nth-child(2){opacity:0}
.mobile-nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-nav-menu{
  position:fixed;top:64px;left:0;right:0;z-index:9999;
  background:var(--ivory);border-bottom:1px solid var(--gold-light);
  padding:20px;display:none;flex-direction:column;gap:0;
  max-height:calc(100vh - 64px);overflow-y:auto;
  box-shadow:0 20px 40px rgba(var(--gold-deep-rgb), 0.15);
}
.mobile-nav-menu.open{display:flex}
.mobile-nav-menu a{
  display:block;padding:14px 16px;font-family:'Cinzel',serif;font-size:13px;letter-spacing:0.3em;
  color:var(--ink);text-transform:uppercase;border-bottom:1px solid var(--gold-light);
  transition:all 0.3s;
}
.mobile-nav-menu a:last-child{border-bottom:none}
.mobile-nav-menu a:hover,.mobile-nav-menu a.active{color:var(--gold-deep);background:rgba(var(--gold-rgb), 0.05);padding-left:24px}
.mobile-nav-menu a:focus,.mobile-nav-menu a:focus-visible{outline:none;box-shadow:inset 3px 0 0 var(--gold-bright)}

@media(max-width:900px){
  .mobile-nav{display:flex}
  .mobile-nav-logo{font-size:14px;letter-spacing:0.2em}
  .mobile-nav-toggle{width:32px;height:32px;padding:0 6px}
}

/* ============================================
   v7.1.12 mobile-nav 暗色增强
   ============================================ */
:root[data-theme="dark"] .mobile-nav {
  background: rgba(15, 27, 42, 0.95);
  border-bottom-color: var(--gold-light);
}
:root[data-theme="dark"] .mobile-nav-toggle {
  border-color: var(--gold-light);
}
:root[data-theme="dark"] .mobile-nav-toggle span {
  background: var(--text-light);
}
:root[data-theme="dark"] .mobile-nav-menu {
  background: #0F1B2A;
  border-bottom-color: var(--gold-light);
}
:root[data-theme="dark"] .mobile-nav-menu a {
  color: var(--text-light);
  border-bottom-color: var(--gold-light);
}
:root[data-theme="dark"] .mobile-nav-menu a:hover,
:root[data-theme="dark"] .mobile-nav-menu a.active {
  color: var(--gold-bright);
  background: rgba(168, 192, 216, 0.06);
}