/**
 * Restored Header & Navigation from index.html
 */

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 1000;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.85);
    box-shadow: var(--shadow);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

header.scrolled {
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    transform: translateY(-3px);
}

.logo-image {
    height: 70px;
    width: auto;
    object-fit: contain;
    image-rendering: -webkit-optimize-contrast;
}

.logo-text {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}


nav a {
    color: var(--dark);
    text-decoration: none;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transition: var(--transition);
}

nav a:hover {
    color: var(--primary);
}

nav a:hover::after {
    width: 100%;
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark);
    position: relative;
    z-index: 1001;
}

/* Responsive Logic */
@media (max-width: 768px) {
    .mobile-menu {
        display: block;
    }
    
    nav {
        position: fixed;
        top: 90px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.95);
        padding: 2rem;
        box-shadow: var(--shadow);
        clip-path: circle(0% at 100% 0%);
        transition: clip-path 0.7s ease;
        z-index: 999;
    }
    
    nav.active {
        clip-path: circle(150% at 100% 0%);
    }
    
    nav ul {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    nav a {
        color: var(--dark);
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .header-container {
        padding: 0 1.5rem;
    }
    
    .logo-text {
        font-size: 1.3rem;
    }
}