/* Header */
.site-header {
    padding: 10px 0;
    background: #fff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    position: relative;
    z-index: 1000;
}

.site-header .beisen-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 16px;
}

.site-logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.site-logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--beisen-dark);
    letter-spacing: -0.5px;
    position: relative;
    line-height: 1;
}

.logo-type-both .site-logo-text {
    padding-left: 16px;
    border-left: 1px solid #e2e8f0;
}

.logo-type-text .site-logo-text {
    font-size: 32px;
    color: var(--beisen-primary);
    letter-spacing: -1.5px;
    font-weight: 800;
}

/* Navigation Menus */
.main-navigation {
    flex-grow: 1;
    margin: 0 40px;
}

.primary-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 30px;
}

.primary-menu li a {
    text-decoration: none;
    color: #1A1A1A;
    font-size: 15px;
    font-weight: 400;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    letter-spacing: -0.4px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.primary-menu li a:hover {
    color: var(--beisen-primary);
}

.primary-menu li.current-menu-item a {
    color: var(--beisen-primary);
}

/* Header Button */
.header-btn {
    padding: 10px 24px !important;
    font-size: 14px !important;
    border-radius: 6px !important;
}

/* Mobile Toggle - Hidden by default */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 32px;
    height: 32px;
    background: rgba(var(--beisen-primary-rgb), 0.05);
    border: 1px solid rgba(var(--beisen-primary-rgb), 0.1);
    border-radius: 8px;
    cursor: pointer;
    padding: 7px;
    z-index: 1001;
    transition: all 0.3s;
}

.mobile-menu-toggle:hover {
    background: rgba(var(--beisen-primary-rgb), 0.1);
}

.mobile-menu-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--beisen-primary);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav-drawer.active {
    visibility: visible;
}

.drawer-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-nav-drawer.active .drawer-overlay {
    opacity: 1;
}

.drawer-content {
    position: absolute;
    top: 0;
    right: -320px;
    width: 320px;
    height: 100%;
    background: #fff;
    padding: 30px;
    display: flex;
    flex-direction: column;
    transition: right 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: -10px 0 40px rgba(0,0,0,0.1);
}

.mobile-nav-drawer.active .drawer-content {
    right: 0;
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid #f1f5f9;
}

.drawer-logo .logo-text {
    font-size: 20px;
    font-weight: 800;
    color: var(--beisen-primary);
    letter-spacing: -0.5px;
}

.drawer-close {
    width: 32px;
    height: 32px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    color: #64748b;
    transition: all 0.3s;
}

.drawer-close:hover {
    background: #ef4444;
    color: #fff;
    border-color: #ef4444;
}

.mobile-navigation {
    flex-grow: 1;
    overflow-y: auto;
}

.mobile-primary-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-primary-menu li {
    margin-bottom: 5px;
}

.mobile-primary-menu li a {
    text-decoration: none;
    color: var(--beisen-text);
    font-size: 16px;
    font-weight: 600;
    display: block;
    padding: 12px 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-primary-menu li a:hover,
.mobile-primary-menu li.current-menu-item a {
    color: var(--beisen-primary);
    background: rgba(var(--beisen-primary-rgb), 0.05);
}

.drawer-footer {
    padding-top: 25px;
    border-top: 1px solid #f1f5f9;
}

.drawer-btn {
    display: block;
    text-align: center;
    width: 100%;
    border-radius: 50px !important;
}

/* Responsiveness */
@media (max-width: 1024px) {
    .main-navigation {
        display: none;
    }
    
    .header-actions .header-btn {
        display: none; /* Hide button on mobile, show in drawer */
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .site-header .beisen-container {
        padding: 0 20px;
    }
}

@media (max-width: 768px) {
    .site-logo-text { font-size: 22px; }
}

@media (max-width: 480px) {
    .site-logo-text { font-size: 18px; }
    .drawer-content { width: 85%; right: -85%; }
}