/* ==========================================================================
   FPP Global Header Component
   Shared navigation for all /new/* pages
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables (fallbacks for pages without styles.css)
   -------------------------------------------------------------------------- */
:root {
    --color-primary: #0E5BE0;
    --color-accent: #0A4FC4;
    --color-text-light: #3D4F6F;
    --color-text-muted: #5E6E8C;
    --color-background: #FFFFFF;
    --color-background-alt: #F1F4FB;
    --color-border-light: rgba(0,0,0,0.08);
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-xl: 1.25rem;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --border-radius: 8px;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
}

/* --------------------------------------------------------------------------
   Header Base
   -------------------------------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    transition: box-shadow var(--transition-base), background-color var(--transition-base);
}

.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    background-color: rgba(255, 255, 255, 0.99);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1400px !important;
    margin: 0 auto;
    padding: 0 3rem !important;
}

/* --------------------------------------------------------------------------
   Logo
   -------------------------------------------------------------------------- */
.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

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

.logo-img {
    height: 28px;
    width: auto;
    transition: opacity var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Desktop Navigation
   -------------------------------------------------------------------------- */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0;
    margin-left: 1rem !important;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    padding: var(--space-sm) 0.8rem;
    border-radius: var(--border-radius);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-background-alt);
}

.nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-background-alt);
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   Dropdown Menu
   -------------------------------------------------------------------------- */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    padding: var(--space-sm) 0.8rem;
    border-radius: var(--border-radius);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    cursor: pointer;
    background: none;
    border: none;
    text-align: left;
    line-height: 1.3;
}

.nav-dropdown-trigger .nav-text,
.mobile-nav-dropdown-trigger .nav-text {
    display: block;
    line-height: 1.2;
    min-width: 130px !important;
}

.nav-dropdown-trigger:hover,
.nav-dropdown.active .nav-dropdown-trigger {
    color: var(--color-primary);
    background-color: var(--color-background-alt);
}

.nav-dropdown-trigger.active {
    color: var(--color-primary);
    background-color: var(--color-background-alt);
    font-weight: 600;
}

.nav-dropdown-icon {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-fast);
}

.nav-dropdown.active .nav-dropdown-icon {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 260px;
    background-color: var(--color-background);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
    z-index: 1001;
}

/* Two-column mega menu for Recruitment Formats */
.nav-dropdown-menu.mega-menu {
    min-width: 520px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    padding: 0;
}

.nav-dropdown-menu.mega-menu .mega-menu-column {
    padding: var(--space-sm);
}

.nav-dropdown-menu.mega-menu .mega-menu-column:first-child {
    border-right: 1px solid var(--color-border-light);
}

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

.nav-dropdown-link {
    display: flex;
    flex-direction: column;
    padding: var(--space-md);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
    text-decoration: none;
}

.nav-dropdown-link:hover {
    background-color: var(--color-background-alt);
}

.nav-dropdown-link-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.nav-dropdown-link-desc {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    line-height: 1.4;
}

.nav-dropdown-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    padding: var(--space-sm) var(--space-md);
    margin-top: var(--space-xs);
    border-top: 1px solid var(--color-border-light);
}

.nav-dropdown-label:first-child {
    border-top: none;
    margin-top: 0;
}

.nav-dropdown-divider {
    height: 1px;
    background-color: var(--color-border-light);
    margin: var(--space-sm) 0;
}

.nav-cta {
    margin-left: var(--space-md);
    flex-shrink: 0;
}

.nav-cta .btn,
.nav-cta .btn-nav {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-cta .btn-primary {
    background: var(--color-primary, #0E5BE0);
    color: white;
}

.nav-cta .btn-primary:hover {
    background: #0A4FC4;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(14, 91, 224, 0.3);
}

/* --------------------------------------------------------------------------
   Mobile Menu Toggle
   -------------------------------------------------------------------------- */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background-color: var(--color-background-alt);
}

.hamburger {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-primary);
    position: relative;
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: transform var(--transition-base), top var(--transition-base);
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* Hamburger animation when active */
.mobile-menu-toggle.active .hamburger {
    background-color: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
    background-color: var(--color-primary);
}

.mobile-menu-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
    background-color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Mobile Navigation Panel
   -------------------------------------------------------------------------- */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, #141933 0%, #1a2040 100%);
    z-index: 999;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    font-size: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    padding: 1rem 1.25rem;
    border-radius: 12px;
    transition: all 0.2s ease;
    text-decoration: none;
    border: 1px solid transparent;
}

.mobile-nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.mobile-nav-link.active {
    color: #22d3ee;
    background: rgba(34, 211, 238, 0.1);
    border-color: rgba(34, 211, 238, 0.3);
    font-weight: 600;
}

/* Mobile Dropdown */
.mobile-nav-dropdown {
    display: flex;
    flex-direction: column;
    margin-bottom: 0.25rem;
}

.mobile-nav-dropdown-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    padding: 1rem 1.25rem;
    border-radius: 12px;
    background: none;
    border: 1px solid transparent;
    cursor: pointer;
    width: 100%;
    text-align: left;
    transition: all 0.2s ease;
}

.mobile-nav-dropdown-trigger:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.mobile-nav-dropdown.active .mobile-nav-dropdown-trigger {
    color: #22d3ee;
    background: rgba(34, 211, 238, 0.1);
    border-color: rgba(34, 211, 238, 0.3);
    font-weight: 600;
}

.mobile-nav-dropdown-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
    color: rgba(255, 255, 255, 0.6);
}

.mobile-nav-dropdown.active .mobile-nav-dropdown-icon {
    transform: rotate(180deg);
    color: #22d3ee;
}

.mobile-nav-submenu {
    display: none;
    flex-direction: column;
    margin-top: 0.5rem;
    margin-left: 1rem;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-nav-dropdown.active .mobile-nav-submenu {
    display: flex;
}

.mobile-nav-sublink {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    text-decoration: none;
    display: block;
}

.mobile-nav-sublink:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.mobile-nav-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #22d3ee;
    padding: 1rem 1rem 0.5rem;
    margin-top: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-nav-label:first-child {
    border-top: none;
    margin-top: 0;
    padding-top: 0.5rem;
}

.mobile-nav-cta {
    margin-top: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
}

.mobile-nav-cta .btn {
    width: 100%;
    justify-content: center;
}

/* Prevent body scroll when mobile menu is open */
body.menu-open {
    overflow: hidden;
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */

/* Hide mobile elements on desktop */
@media (min-width: 1025px) {
    .mobile-menu-toggle,
    .mobile-nav {
        display: none !important;
    }
}

/* Tablet - compressed nav */
@media (max-width: 1024px) {
    .nav-link {
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--font-size-xs);
    }
    
    .main-nav {
        gap: var(--space-sm);
    }
}

/* Mobile nav */
@media (max-width: 900px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-nav {
        display: block;
    }
}

/* Small mobile adjustments */
@media (max-width: 480px) {
    .site-header .container {
        height: 64px;
    }
    
    .mobile-nav {
        top: 64px;
    }
    
    .mobile-nav-content {
        padding: 1rem;
    }
    
    .mobile-nav-link,
    .mobile-nav-dropdown-trigger {
        font-size: 0.95rem;
        padding: 0.875rem 1rem;
    }
    
    .mobile-nav-sublink {
        font-size: 0.85rem;
        padding: 0.625rem 0.875rem;
    }
}