/* Custom Header Styles */
.custom-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
}

.custom-header.sticky-header.header-hidden {
    transform: translateY(-100%);
}

.custom-header.sticky-header.header-visible {
    transform: translateY(0);
}

/* Adaptive Colors - Light theme (default) */
.custom-header {
    background: rgba(255, 255, 255, 0.95);
    color: #000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.custom-header .nav-link {
    color: #000;
}

.custom-header .logo-text {
    color: #000;
}

.custom-header .mobile-menu-toggle span {
    background-color: #000;
}

/* Adaptive Colors - Dark theme */
.custom-header.dark-theme {
    background: rgba(0, 0, 0, 0.95);
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.custom-header.dark-theme .nav-link {
    color: #fff;
}

.custom-header.dark-theme .logo-text {
    color: #fff;
}

.custom-header.dark-theme .mobile-menu-toggle span {
    background-color: #fff;
}

/* Header Container */
.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    position: relative;
}

/* Logo Styles */
.header-logo {
    flex-shrink: 0;
}

.header-logo a {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.header-logo img {
    height: 40px;
    width: auto;
    display: block;
}

.header-logo .logo-text {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.02em;
    transition: color 0.3s ease;
}

/* Navigation Styles */
.header-navigation {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

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

.nav-item {
    margin: 0;
}

.nav-link {
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    background: rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

.custom-header.dark-theme .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
    margin-left: 20px;
}

.mobile-menu-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: #000;
    border-radius: 1px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .header-container {
        padding: 20px 30px;
    }
    
    .nav-menu {
        gap: 1.5rem;
    }
    
    .nav-link {
        font-size: 13px;
        padding: 6px 10px;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 15px 20px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: inherit;
        backdrop-filter: inherit;
        -webkit-backdrop-filter: inherit;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    
    .custom-header.dark-theme .nav-menu {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        width: 100%;
        text-align: center;
        padding: 15px 20px;
        border-radius: 0;
        font-size: 14px;
    }
    
    .nav-link:hover {
        background: rgba(0, 0, 0, 0.05);
        transform: none;
    }
    
    .custom-header.dark-theme .nav-link:hover {
        background: rgba(255, 255, 255, 0.1);
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 12px 15px;
    }
    
    .header-logo img {
        height: 32px;
    }
    
    .header-logo .logo-text {
        font-size: 24px;
    }
    
    .mobile-menu-toggle {
        width: 20px;
        height: 15px;
    }
}

/* Smooth scrolling enhancement */
html {
    scroll-behavior: smooth;
}

/* Ensure content doesn't hide behind fixed header */
body {
    padding-top: 80px; /* Adjust based on your header height */
}

/* Header entrance animation */
.custom-header {
    animation: headerSlideDown 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes headerSlideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Focus styles for accessibility */
.nav-link:focus {
    outline: 2px solid #007cba;
    outline-offset: 2px;
}

.mobile-menu-toggle:focus {
    outline: 2px solid #007cba;
    outline-offset: 2px;
    border-radius: 4px;
}