.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 56px;
    background-color: rgba(var(--header-bg-rgb), 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: background-color 0.3s ease;
}

.site-header.scrolled {
    background-color: rgba(var(--header-bg-rgb), 0.95);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-family: var(--font-heading);
    font-size: 22px;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    text-transform: uppercase;
    font-weight: 600;
}

.brand-logo:hover {
    color: var(--color-accent-2);
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    list-style: none;
    display: flex;
    gap: 32px;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
    display: flex;
    align-items: center;
}

.nav-link {
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--color-text-muted);
    text-transform: uppercase;
    padding: 8px 0;
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width 0.2s ease;
}

.nav-link:hover, .nav-item.active .nav-link {
    color: var(--color-accent);
}

.nav-link:hover::after, .nav-item.active .nav-link::after {
    width: 100%;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.open {
    background-color: var(--color-open);
    box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7);
    animation: pulse 2s infinite;
}

.status-dot.closed {
    background-color: var(--color-closed);
}

/* Dropdown */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: rgba(var(--header-bg-rgb), 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
}

.nav-item.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 8px 16px;
    font-size: 12px;
    color: var(--color-text);
    text-transform: none;
    letter-spacing: 0.05em;
}

.dropdown-menu a:hover {
    background-color: var(--color-surface-2);
    color: var(--color-accent);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
}

@media (max-width: 768px) {
    .site-header {
        height: 52px;
    }
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: rgba(var(--header-bg-rgb), 0.98);
        flex-direction: column;
        justify-content: center;
        transition: right 0.3s ease;
        z-index: 999;
    }
    .main-nav.active {
        right: 0;
    }
    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }
    .nav-link {
        font-size: 14px;
    }
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: transparent;
        border: none;
        text-align: center;
        display: none;
    }
    .nav-item.has-dropdown:hover .dropdown-menu {
        display: block;
    }
}

/* Mobile drawer upgrade: Steam mobile inspired */
.mobile-drawer-head,
.mobile-drawer-foot {
    display: none;
}

@media (max-width: 768px) {
    .site-header {
        height: 58px;
        background:
            linear-gradient(180deg, rgba(var(--header-bg-rgb), .86), rgba(var(--header-bg-rgb), .64));
        border-bottom: 1px solid color-mix(in srgb, var(--color-accent) 18%, transparent);
        box-shadow: 0 10px 30px rgba(0,0,0,.28);
    }
    .header-container {
        padding: 0 18px;
    }
    .brand-logo {
        font-size: 20px;
        letter-spacing: .18em;
        text-shadow: 0 0 24px color-mix(in srgb, var(--color-accent) 24%, transparent);
    }
    .mobile-menu-toggle {
        width: 42px;
        height: 42px;
        border-radius: 12px;
        border: 1px solid color-mix(in srgb, var(--color-accent) 14%, transparent);
        background: rgba(255,255,255,.035);
        backdrop-filter: blur(10px);
        z-index: 1002;
        transition: transform .2s ease, background .2s ease;
    }
    .mobile-menu-toggle:active {
        transform: scale(.96);
    }
    .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: min(86vw, 390px);
        height: 100svh;
        padding: 82px 22px 26px;
        justify-content: flex-start;
        align-items: stretch;
        background:
            radial-gradient(circle at 85% 10%, color-mix(in srgb, var(--color-accent) 13%, transparent), transparent 30%),
            linear-gradient(180deg, rgba(var(--header-bg-rgb), .88), rgba(0,0,0,.92));
        border-left: 1px solid color-mix(in srgb, var(--color-accent) 18%, transparent);
        box-shadow: -30px 0 90px rgba(0,0,0,.68);
        backdrop-filter: blur(22px) saturate(130%);
        -webkit-backdrop-filter: blur(22px) saturate(130%);
        transform: translateX(105%);
        transition: transform .38s cubic-bezier(.22,1,.36,1);
        z-index: 1001;
    }
    .main-nav::before {
        content: '';
        position: fixed;
        inset: 0 100% 0 auto;
        width: 100vw;
        background: rgba(0,0,0,.42);
        opacity: 0;
        pointer-events: none;
        transition: opacity .3s ease;
    }
    .main-nav.active {
        right: 0;
        transform: translateX(0);
    }
    .main-nav.active::before {
        opacity: 1;
    }
    .mobile-drawer-head,
    .mobile-drawer-foot {
        display: block;
    }
    .mobile-drawer-head {
        margin-bottom: 28px;
        padding-bottom: 18px;
        border-bottom: 1px solid rgba(255,255,255,.08);
    }
    .mobile-drawer-head .drawer-kicker {
        display: block;
        color: var(--color-accent-2);
        font-size: 10px;
        letter-spacing: .2em;
        text-transform: uppercase;
        margin-bottom: 6px;
    }
    .mobile-drawer-head strong {
        display: block;
        color: var(--color-text);
        font-family: var(--font-heading);
        font-size: 30px;
        letter-spacing: .12em;
        text-transform: uppercase;
    }
    .nav-list {
        align-items: stretch;
        gap: 10px;
        width: 100%;
    }
    .nav-item {
        width: 100%;
    }
    .nav-link {
        width: 100%;
        min-height: 52px;
        padding: 0 16px;
        justify-content: space-between;
        border-radius: 10px;
        color: var(--color-text);
        background: linear-gradient(90deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
        border: 1px solid rgba(255,255,255,.055);
        font-size: 12px;
        letter-spacing: .15em;
        box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
    }
    .nav-link::after {
        display: none;
    }
    .nav-link:hover,
    .nav-item.active .nav-link {
        color: var(--color-accent);
        border-color: color-mix(in srgb, var(--color-accent) 28%, transparent);
        background: linear-gradient(90deg, color-mix(in srgb, var(--color-accent) 10%, transparent), rgba(255,255,255,.022));
    }
    .status-dot {
        width: 7px;
        height: 7px;
        margin-left: auto;
    }
    .dropdown-menu {
        display: grid;
        gap: 8px;
        margin: 8px 0 0 14px;
        padding: 0;
        text-align: left;
    }
    .dropdown-menu a {
        border-left: 1px solid rgba(255,255,255,.1);
        color: var(--color-text-muted);
        padding: 8px 12px;
        font-size: 11px;
        background: transparent;
    }
    .mobile-drawer-foot {
        margin-top: auto;
        padding-top: 18px;
        color: var(--color-text-muted);
        font-size: 11px;
        letter-spacing: .08em;
        text-transform: uppercase;
        border-top: 1px solid rgba(255,255,255,.08);
    }
    .mobile-drawer-foot small {
        display: block;
        margin-top: 4px;
        color: var(--color-accent-2);
    }
    body.mobile-nav-open {
        overflow: hidden;
    }
}