/**
 * Premium Header Styles
 * Modern, glassmorphic navigation with smooth animations
 */

/* ============================================
   BASE HEADER STRUCTURE
   ============================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Transparent header for hero pages */
.site-header--transparent {
    background: linear-gradient(180deg, 
        rgba(0, 0, 0, 0.4) 0%, 
        rgba(0, 0, 0, 0.2) 50%, 
        rgba(0, 0, 0, 0) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* Solid header on scroll or regular pages */
.site-header--solid,
.site-header.scrolled {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.header-wrapper {
    padding: 1.25rem 0;
    transition: padding 0.3s ease;
}

.site-header.scrolled .header-wrapper {
    padding: 0.875rem 0;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

/* ============================================
   LOGO / BRANDING
   ============================================ */

.site-branding {
    flex-shrink: 0;
}

.site-title {
    margin: 0;
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1;
}

.site-title a {
    color: #fff;
    text-decoration: none;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
    display: inline-block;
}

.site-title a:hover {
    transform: translateY(-2px);
    filter: brightness(1.2);
}

/* ============================================
   MAIN NAVIGATION
   ============================================ */

.main-navigation {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-menu,
#primary-menu {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-menu li,
#primary-menu li {
    margin: 0;
    position: relative;
}

.nav-menu a,
#primary-menu a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 0.625rem 1.125rem;
    border-radius: 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: block;
}

.nav-menu a:hover,
#primary-menu a:hover,
.nav-menu li.current-menu-item a,
#primary-menu li.current-menu-item a {
    color: #fff;
    background: rgba(99, 102, 241, 0.15);
    backdrop-filter: blur(10px);
}

.nav-menu li.current-menu-item a,
#primary-menu li.current-menu-item a {
    color: #fff;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
}

/* Submenu dropdown */
.nav-menu .sub-menu,
#primary-menu .sub-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 0.75rem;
    padding: 0.5rem;
    min-width: 220px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.nav-menu li:hover .sub-menu,
#primary-menu li:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu .sub-menu a,
#primary-menu .sub-menu a {
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
}

/* ============================================
   HEADER ACTIONS (Search, User, Mobile)
   ============================================ */

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

/* Search Button */
.header-search-toggle {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.85);
    border-radius: 0.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.header-search-toggle:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.3);
    color: #fff;
    transform: translateY(-2px);
}

.header-search-toggle svg {
    width: 20px;
    height: 20px;
}

/* User Menu Button */
.header-user-menu {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: #fff;
    border-radius: 0.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.header-user-menu:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

.header-user-menu svg {
    width: 20px;
    height: 20px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    border-radius: 0.5rem;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.3);
}

.mobile-menu-toggle svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   SEARCH OVERLAY
   ============================================ */

.header-search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 99999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-overlay-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 10rem 2rem 2rem;
}

.search-overlay-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-overlay-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.search-overlay-form {
    margin-bottom: 2rem;
}

.search-overlay-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 2rem;
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.search-overlay-input:focus {
    border-color: #6366f1;
    background: rgba(255, 255, 255, 0.15);
}

.search-overlay-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    /* More transparent header on tablet */
    .site-header--transparent {
        background: linear-gradient(180deg, 
            rgba(0, 0, 0, 0.35) 0%, 
            rgba(0, 0, 0, 0.15) 50%, 
            rgba(0, 0, 0, 0) 100%);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
    
    .site-header--solid,
    .site-header.scrolled {
        background: rgba(15, 23, 42, 0.8);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        box-shadow: 0 2px 15px rgba(0, 0, 0, 0.2);
    }
    
    .main-navigation {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        padding: 4rem 1.5rem 1.5rem;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        box-shadow: -10px 0 50px rgba(0, 0, 0, 0.5);
    }
    
    .main-navigation.active {
        right: 0;
    }
    
    .nav-menu,
    #primary-menu {
        flex-direction: column;
        align-items: stretch;
        gap: 0.25rem;
    }
    
    .nav-menu a,
    #primary-menu a {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    .nav-menu .sub-menu,
    #primary-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: 0.25rem;
        margin-left: 0.75rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .site-title {
        font-size: 1.35rem;
    }
    
    .header-wrapper {
        padding: 0.75rem 0;
    }
    
    .site-header.scrolled .header-wrapper {
        padding: 0.5rem 0;
    }
}

@media (max-width: 768px) {
    /* Even more transparent on smaller tablets */
    .site-header--transparent {
        background: linear-gradient(180deg, 
            rgba(0, 0, 0, 0.3) 0%, 
            rgba(0, 0, 0, 0.1) 50%, 
            rgba(0, 0, 0, 0) 100%);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }
    
    .site-header--solid,
    .site-header.scrolled {
        background: rgba(15, 23, 42, 0.75);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    }
    
    .header-wrapper {
        padding: 0.6rem 0;
    }
    
    .site-header.scrolled .header-wrapper {
        padding: 0.4rem 0;
    }
    
    .site-title {
        font-size: 1.2rem;
    }
    
    .header-search-toggle,
    .header-user-menu,
    .mobile-menu-toggle {
        width: 32px;
        height: 32px;
    }
    
    .search-overlay-content {
        padding: 5rem 1rem 1rem;
    }
    
    .search-overlay-input {
        font-size: 1.25rem;
        padding: 0.75rem 1rem;
    }
    
    .main-navigation {
        width: 260px;
        padding: 3.5rem 1rem 1rem;
    }
}

@media (max-width: 575px) {
    /* Most transparent on mobile */
    .site-header--transparent {
        background: linear-gradient(180deg, 
            rgba(0, 0, 0, 0.25) 0%, 
            rgba(0, 0, 0, 0.1) 50%, 
            rgba(0, 0, 0, 0) 100%);
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
    }
    
    .site-header--solid,
    .site-header.scrolled {
        background: rgba(15, 23, 42, 0.7);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        box-shadow: 0 1px 10px rgba(0, 0, 0, 0.12);
    }
    
    .header-wrapper {
        padding: 0.5rem 0;
    }
    
    .site-header.scrolled .header-wrapper {
        padding: 0.35rem 0;
    }
    
    .site-title {
        font-size: 1.1rem;
    }
    
    .header-search-toggle,
    .header-user-menu,
    .mobile-menu-toggle {
        width: 30px;
        height: 30px;
    }
    
    .header-content {
        gap: 0.75rem;
    }
    
    .main-navigation {
        width: 240px;
        padding: 3rem 0.875rem 0.875rem;
    }
    
    .nav-menu a,
    #primary-menu a {
        padding: 0.6rem 0.875rem;
        font-size: 0.8rem;
    }
}

/* ============================================
   MOBILE MENU OVERLAY
   ============================================ */

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

/* ============================================
   PREMIUM EFFECTS
   ============================================ */

/* Floating animation for logo */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-3px); }
}

.site-title:hover a {
    animation: float 2s ease-in-out infinite;
}

/* Glow effect on hover */
.nav-menu a:hover,
#primary-menu a:hover {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

/* Smooth scrollbar for mobile menu */
.main-navigation::-webkit-scrollbar {
    width: 6px;
}

.main-navigation::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.main-navigation::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.5);
    border-radius: 3px;
}

.main-navigation::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.7);
}