/* ===================================================================
   Site Header · Navigation · Mobile Toggle
   =================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid rgba(255, 255, 255, 0.35);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.5) inset,
        0 4px 24px var(--color-shadow);
    transition: background var(--transition-base),
                box-shadow var(--transition-base),
                padding var(--transition-base);
}

.site-header.scrolled {
    padding: var(--space-sm) 0;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(28px) saturate(1.6);
    -webkit-backdrop-filter: blur(28px) saturate(1.6);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.6) inset,
        0 4px 30px var(--color-shadow-md);
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

body .site-nav__brand {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-charcoal);
    letter-spacing: 0.02em;
    text-decoration: none;
    transition: color var(--transition-fast);
}

body .site-nav__brand:hover {
    color: var(--color-accent);
}

.site-nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    list-style: none;
    margin: 0;
    padding: 0;
}

body .site-nav__link {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-charcoal-soft);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.site-nav__link i {
    font-size: 1em;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.site-nav__link:hover i,
.site-nav__link.active i {
    opacity: 1;
}

.site-nav__link:hover,
.site-nav__link.active {
    color: var(--color-charcoal);
    background: var(--color-white-40);
}

/* Toggle: hidden by default, shown on mobile */
.site-nav__toggle {
    display: none;
}

@media (max-width: 768px) {
    .site-nav__toggle {
        display: block;
    }
}

/* Dropdown Menu Styles */
.site-nav__dropdown {
    position: relative;
}

.dropdown-trigger {
    background: none;
    border: none;
    cursor: pointer;
    text-transform: uppercase;
}

.dropdown-trigger__text {
    color: var(--color-accent);
}

.dropdown-arrow {
    font-size: 0.7em;
    opacity: 0.5;
    margin-left: 0.2em;
    transition: transform var(--transition-fast);
}

.site-nav__dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    margin: 0;
    padding: var(--space-sm);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px var(--color-shadow-lg);
    list-style: none;
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    z-index: 1001;
}

.site-nav__dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item-link {
    display: flex;
    align-items: center;
    gap: 0.8em;
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-charcoal-soft);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: none;
    letter-spacing: normal;
    background: none;
    border: none;
    border-radius: var(--radius-md);
    text-align: left;
    transition: all var(--transition-fast);
}

.dropdown-item-link i {
    opacity: 0.7;
    width: 1.25em;
    text-align: center;
}

.dropdown-item-link:hover {
    color: var(--color-charcoal);
    background: var(--color-rose-soft);
}

.dropdown-item-link--logout {
    margin-top: var(--space-xs);
    border-top: 1px solid rgba(0,0,0,0.05);
    padding-top: var(--space-sm);
    color: var(--color-taupe);
}

.dropdown-item-link--logout:hover {
    color: var(--color-accent);
}

/* Mobile Adjustments for Dropdown */
@media (max-width: 768px) {
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: transparent;
        border: none;
        padding-left: var(--space-lg);
        min-width: 0;
    }

    .dropdown-arrow {
        display: none;
    }
}