/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    transition: all var(--transition-base);
}

.site-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(26, 35, 50, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition-base);
}

.site-header.scrolled::before {
    background: rgba(26, 35, 50, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Transparent header only on homepage hero */
.page-home .site-header:not(.scrolled)::before {
    background: transparent;
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
}

.site-header.scrolled {
    height: var(--header-height-scroll);
}

.header-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

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

.header-logo img {
    height: 48px;
    width: auto;
    transition: height var(--transition-base);
}

.site-header.scrolled .header-logo img {
    height: 36px;
}

/* Navigation */
.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    list-style: none;
    margin: 0;
    padding: 0;
}

.header-nav__item {
    position: relative;
    list-style: none;
}

.header-nav__link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.header-nav__link:hover,
.header-nav__link.active {
    color: var(--brooks-white);
    background: rgba(255, 255, 255, 0.08);
}

.header-nav__link.active {
    color: var(--brooks-white);
}

/* Mega Menu Dropdown */
.header-nav__item--mega {
    position: static;
}

.mega-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(26, 35, 50, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: var(--space-2xl) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-base);
    pointer-events: none;
}

.header-nav__item--mega.mega-open .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.mega-menu__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
}

.mega-menu__item {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.mega-menu__item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.mega-menu__icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    font-size: 20px;
}

.mega-menu__icon--brooks { background: linear-gradient(135deg, var(--brooks-blue-accent), var(--brooks-blue)); color: white; }
.mega-menu__icon--vetriks { background: linear-gradient(135deg, var(--vetriks-accent), var(--vetriks-blue)); color: white; }
.mega-menu__icon--forca { background: linear-gradient(135deg, var(--forca-teal), var(--forca-ocean)); color: white; }
.mega-menu__icon--academy { background: linear-gradient(135deg, #f39c12, #e67e22); color: white; }

.mega-menu__title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--brooks-white);
    margin-bottom: var(--space-xs);
}

.mega-menu__desc {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.5;
}

/* Dropdown arrow indicator */
.header-nav__arrow {
    width: 12px;
    height: 12px;
    opacity: 0.6;
    transition: transform var(--transition-fast);
}

.header-nav__item--mega:hover .header-nav__arrow {
    transform: rotate(180deg);
}

/* CTA Button in header */
.header-cta {
    margin-left: var(--space-lg);
}

.header-cta .btn {
    padding: 10px 24px;
    font-size: var(--text-xs);
    background: var(--brooks-red);
    color: white;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 14px rgba(192, 57, 43, 0.3);
}

.header-cta .btn:hover {
    background: var(--brooks-red-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(192, 57, 43, 0.4);
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: white;
}

.mobile-toggle__bar {
    width: 22px;
    height: 2px;
    background: white;
    border-radius: 2px;
    position: relative;
    transition: all var(--transition-fast);
}

.mobile-toggle__bar::before,
.mobile-toggle__bar::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.mobile-toggle__bar::before { top: -7px; }
.mobile-toggle__bar::after { bottom: -7px; }

.mobile-toggle.active .mobile-toggle__bar {
    background: transparent;
}

.mobile-toggle.active .mobile-toggle__bar::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-toggle.active .mobile-toggle__bar::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* Mobile Sidebar */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 380px;
    height: 100vh;
    background: var(--brooks-navy);
    z-index: 9999;
    padding: var(--space-3xl) var(--space-xl);
    transition: right var(--transition-slow);
    overflow-y: auto;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav__overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.mobile-nav__close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.mobile-nav__close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.mobile-nav__list {
    margin-top: var(--space-3xl);
}

.mobile-nav__link {
    display: block;
    padding: var(--space-md) 0;
    font-size: var(--text-lg);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: color var(--transition-fast);
}

.mobile-nav__link:hover {
    color: white;
}

.mobile-nav__cta {
    margin-top: var(--space-2xl);
}

/* Responsive */
@media (max-width: 1100px) {
    .header-nav, .header-cta {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
}

@media (max-width: 768px) {
    .header-inner {
        padding: 0 var(--space-md);
    }
    
    .header-logo img {
        height: 38px;
    }
    
    .site-header.scrolled .header-logo img {
        height: 32px;
    }
    
    .mobile-nav {
        max-width: 100%;
        padding: var(--space-2xl) var(--space-lg);
    }
    
    .mobile-nav__link {
        font-size: var(--text-base);
        padding: var(--space-md) 0;
    }
}