/* Header Component - Enhanced */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-glass);
    z-index: var(--z-header);
    transition: var(--transition);
    padding: var(--spacing-sm) 0;
    animation: slideInDown 0.8s ease-out;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-medium);
    padding: var(--spacing-xs) 0;
    transform: translateY(0);
}

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

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-extra-bold);
    font-size: 1.5rem;
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition-elastic);
    position: relative;
}

.logo::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(0, 112, 211, 0.1) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: var(--transition-bounce);
    border-radius: 50%;
    z-index: -1;
}

.logo:hover::before {
    width: 120px;
    height: 120px;
}

.logo:hover {
    transform: scale(1.05);
    color: var(--color-secondary);
}

.logo img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    transition: var(--transition-elastic);
    box-shadow: var(--shadow-light);
    animation: float 4s ease-in-out infinite;
}

.logo:hover img {
    transform: rotate(15deg) scale(1.1);
    box-shadow: var(--shadow-neon);
}

.header.scrolled .logo img {
    width: 50px;
    height: 50px;
}

.logo-text {
    background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
    background-size: 200% 200%;
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-dark);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--color-primary);
    background: rgba(0, 112, 211, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-dark);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.mobile-menu:hover {
    background: rgba(0, 112, 211, 0.1);
    color: var(--color-primary);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .mobile-menu {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: linear-gradient(135deg, rgba(0, 112, 211, 0.98), rgba(64, 224, 224, 0.98));
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-heavy);
    }

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

    .nav-link {
        width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-sm);
        padding: var(--spacing-sm);
        background: rgba(255, 255, 255, 0.1);
        border-radius: var(--border-radius);
        color: var(--color-white);
    }

    .nav-link:hover {
        background: rgba(255, 255, 255, 0.2);
        color: var(--color-white);
    }
}