/* ============================================
   NAVIGATION - Header, Dropdowns, Mobile Menu
   Depends on: variables.css
   ============================================ */

/* ========== HEADER ========== */
.site-header {
    position: relative;
    z-index: var(--z-header);
    padding: var(--spacing-header-y) var(--spacing-header-x);
    transition: background var(--transition-fast);
}

.site-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
}

/* Header backgrounds by theme - transparent to blend with page */
.theme-dark .site-header {
    background: transparent;
}

.theme-light .site-header {
    background: transparent;
}

.theme-beige .site-header {
    background: transparent;
}

.theme-ivory .site-header {
    background: transparent;
}

/* ========== LOGO ========== */
.site-logo {
    font-family: var(--font-family-body);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.5px;
    transition: opacity var(--transition-fast);
}

.site-logo:hover {
    opacity: 0.8;
}

.theme-dark .site-logo {
    color: var(--color-text-primary);
}

:is(.theme-light, .theme-beige, .theme-ivory) .site-logo {
    color: var(--current-text);
}

.theme-maroon .site-logo {
    color: var(--current-text);
}

/* ========== NAV LEFT GROUP ========== */
.nav-left {
    display: flex;
    align-items: center;
    gap: 40px;
}

/* ========== MAIN NAVIGATION ========== */
.nav-main {
    display: flex;
    gap: 25px;
    align-items: center;
}

/* ========== NAV ITEM (dropdown container) ========== */
.nav-item {
    position: relative;
}

.nav-item > a {
    font-family: var(--font-family-nav);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.5px;
    padding-bottom: 4px;
    position: relative;
    transition: color var(--transition-fast);
}


/* Dark theme nav links */
.theme-dark .nav-item > a {
    color: var(--color-text-muted);
}

.theme-dark .nav-item > a:hover,
.theme-dark .nav-item > a.active {
    color: var(--color-text-primary);
}

/* Light theme nav links */
:is(.theme-light, .theme-beige, .theme-ivory) .nav-item > a {
    color: var(--current-text-muted);
}

:is(.theme-light, .theme-beige, .theme-ivory) .nav-item > a:hover,
:is(.theme-light, .theme-beige, .theme-ivory) .nav-item > a.active {
    color: var(--current-text);
}

/* Maroon theme nav links */
.theme-maroon .nav-item > a {
    color: var(--current-text-muted);
}

.theme-maroon .nav-item > a:hover,
.theme-maroon .nav-item > a.active {
    color: var(--current-text);
}

/* ========== DROPDOWN MENU ========== */
.nav-dropdown {
    position: absolute;
    top: calc(100% + 15px);
    left: -15px;
    min-width: 220px;
    padding: 15px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-fast),
                transform var(--transition-fast),
                visibility var(--transition-fast);
    z-index: var(--z-dropdown);
}

/* Show dropdown on hover */
.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Dropdown backgrounds by theme */
.theme-dark .nav-dropdown {
    background: rgba(0, 0, 0, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

:is(.theme-light, .theme-beige, .theme-ivory) .nav-dropdown {
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--current-border);
    box-shadow: var(--shadow-dropdown);
}

.theme-maroon .nav-dropdown {
    background: rgba(46, 17, 20, 0.95);
    border: 1px solid var(--current-border);
}

/* Dropdown links */
.nav-dropdown a {
    display: block;
    padding: 10px 20px;
    font-family: var(--font-family-body);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.5px;
    transition: color var(--transition-fast),
                padding-left var(--transition-fast);
}

.theme-dark .nav-dropdown a {
    color: var(--color-text-muted);
}

.theme-dark .nav-dropdown a:hover {
    color: var(--color-text-primary);
    padding-left: 25px;
}

:is(.theme-light, .theme-beige, .theme-ivory) .nav-dropdown a {
    color: var(--current-text-muted);
}

:is(.theme-light, .theme-beige, .theme-ivory) .nav-dropdown a:hover {
    color: var(--current-text);
    padding-left: 25px;
}

.theme-maroon .nav-dropdown a {
    color: var(--current-text-muted);
}

.theme-maroon .nav-dropdown a:hover {
    color: var(--current-text);
    padding-left: 25px;
}

/* ========== SOCIAL LINKS ========== */
.nav-social {
    display: flex;
    gap: 15px;
    align-items: center;
}

.nav-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-fast),
                transform 0.3s var(--ease-spring);
}

.nav-social a svg {
    width: 20px;
    height: 20px;
}

.theme-dark .nav-social a {
    color: var(--color-text-primary);
    opacity: 0.7;
}

.theme-dark .nav-social a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

:is(.theme-light, .theme-beige, .theme-ivory) .nav-social a {
    color: var(--current-text);
    opacity: 0.7;
}

:is(.theme-light, .theme-beige, .theme-ivory) .nav-social a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.theme-maroon .nav-social a {
    color: var(--current-text);
    opacity: 0.7;
}

.theme-maroon .nav-social a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

/* ========== MOBILE MENU TOGGLE ========== */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 30px;
    height: 30px;
    padding: 0;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    transition: transform var(--transition-fast),
                opacity var(--transition-fast);
}

.theme-dark .mobile-menu-toggle span {
    background: var(--color-text-primary);
}

:is(.theme-light, .theme-beige, .theme-ivory) .mobile-menu-toggle span {
    background: var(--current-text);
}

.theme-maroon .mobile-menu-toggle span {
    background: var(--current-text);
}

/* Hamburger to X animation */
.site-header.nav-open .mobile-menu-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.site-header.nav-open .mobile-menu-toggle span:nth-child(2) {
    opacity: 0;
}

.site-header.nav-open .mobile-menu-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========== MOBILE RESPONSIVE ========== */
@media (max-width: 768px) {
    .site-header {
        padding: var(--spacing-header-y) var(--spacing-header-x);
    }

    .site-header-inner {
        position: relative;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-left {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
    }

    .site-logo {
        margin-bottom: 0;
    }

    /* Mobile nav menu */
    .nav-main {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-medium);
        z-index: var(--z-mobile-menu);
    }

    .theme-dark .nav-main {
        background: rgba(0, 0, 0, 0.98);
    }

    .theme-light .nav-main {
        background: rgba(245, 245, 245, 0.98);
    }

    .theme-beige .nav-main {
        background: rgba(241, 240, 235, 0.98);
    }

    .theme-ivory .nav-main {
        background: rgba(255, 255, 240, 0.98);
    }

    .site-header.nav-open .nav-main {
        max-height: 80vh;
        overflow-y: auto;
    }

    /* Mobile nav items */
    .nav-item {
        width: 100%;
        border-bottom: 1px solid rgba(128, 128, 128, 0.15);
    }

    .nav-item > a {
        display: block;
        padding: 18px var(--spacing-header-x);
        border-bottom: none;
    }

    .nav-item > a:hover,
    .nav-item > a.active {
        border-bottom: none;
    }

    /* Mobile dropdowns */
    .nav-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: transparent !important;
        border: none !important;
        box-shadow: none !important;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-fast);
    }

    .nav-item.dropdown-open .nav-dropdown {
        max-height: 500px;
        padding-bottom: 15px;
    }

    .nav-dropdown a {
        padding: 12px var(--spacing-header-x) 12px calc(var(--spacing-header-x) + 15px);
    }

    .nav-dropdown a:hover {
        padding-left: calc(var(--spacing-header-x) + 20px);
    }

    /* Hide social on mobile header - show in menu */
    .nav-social {
        display: none;
    }

    .site-header.nav-open .nav-social {
        display: flex;
        justify-content: center;
        padding: 20px;
        border-top: 1px solid rgba(128, 128, 128, 0.15);
    }
}