/**
 * Header & Navigation Styles
 * Elevate HR Consultancy
 */

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
}

/* Default Transparent State for Home - applied via JS class 'transparent' */
.site-header.transparent {
    background: transparent !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
}

.site-header.transparent .site-logo-name,
.site-header.transparent .nav-menu a {
    color: var(--color-white);
}

.site-header.transparent .site-logo img {
    filter: brightness(0) invert(1);
    -webkit-filter: brightness(0) invert(1);
    transition: filter 0.3s ease;
}



.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

/* Ensure logo text and links return to dark on scroll */
.site-header.scrolled .site-logo-name,
.site-header.scrolled .nav-menu a {
    color: var(--color-gray-700);
}

.site-header.scrolled .site-logo img {
    filter: none;
    -webkit-filter: none;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    text-decoration: none;
    transition: transform var(--transition-base);
}

.site-logo:hover {
    transform: scale(1.02);
    color: var(--color-secondary);
}

.site-logo img {
    height: 45px;
    width: auto;
}

.site-logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-logo-name {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-primary);
}

.site-logo-tagline {
    font-size: var(--text-xs);
    font-weight: var(--font-normal);
    color: var(--color-gray-500);
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--color-gray-700);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
    background: var(--color-gray-50);
}

/* Override specific white text for transparent header */
.site-header.transparent .nav-menu a:hover,
.site-header.transparent .nav-menu a.active {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.nav-menu a.active {
    font-weight: var(--font-semibold);
}

/* CTA Button in Nav */
.nav-cta {
    margin-left: var(--space-4);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-secondary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   RESPONSIVE NAVIGATION
   ============================================ */
@media (max-width: 1024px) {
    .nav-menu a {
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-sm);
    }

    .nav-cta {
        margin-left: var(--space-2);
    }

    .nav-cta .btn {
        padding: var(--space-2) var(--space-4);
        font-size: var(--text-sm);
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        box-shadow: var(--shadow-lg);
        padding: var(--space-6);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--color-gray-100);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu a {
        padding: var(--space-4);
        width: 100%;
    }

    .nav-cta {
        margin-left: 0;
        margin-top: var(--space-4);
        width: 100%;
    }

    .nav-cta .btn {
        width: 100%;
    }
}