body {
color :#fff;
font-size : 0.9em;
font-family: verdana, sans-serif;
background : #1a1a1a;
}
/* Minimal Dark - Blue Link Hierarchy */
.main-navigation {
    margin : 0 auto;
    width: 100%;
    max-width: 900px;
}

.nav-level-0 {
    display: flex;
    list-style: none;
    justify-content: center;
    gap: 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-item {
    flex: 1;
    text-align: center;
    position: relative;
}

.nav-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 1px;
    height: 20px;
    background: rgba(255,255,255,0.05);
}

/* Level 0 - Main links: Royal Blue */
.nav-level-0 > .nav-item > .nav-link {
    color: #2563eb;
}

/* Level 1 - Submenu links: Standard Blue */
.nav-level-1 > .nav-item > .nav-link {
    color: #3b82f6;
}

/* Level 2 - Deep submenu links: Light Blue */
.nav-level-2 > .nav-item > .nav-link {
    color: #60a5fa;
}

.nav-link {
    text-decoration: none;
    padding: 1.5rem 1rem;
    display: block;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    font-weight: 400;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

/* Hover states */
.nav-level-0 > .nav-item > .nav-link:hover {
    color: #60a5fa;
}

.nav-level-1 > .nav-item > .nav-link:hover {
    color: #93c5fd;
}

.nav-level-2 > .nav-item > .nav-link:hover {
    color: #bfdbfe;
}

/* Text animation */
.nav-text {
    position: relative;
    display: inline-block;
    transition: transform 0.4s ease;
}

.nav-link:hover .nav-text {
    transform: translateY(-2px);
}

/* Background slide effect */
.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(59, 130, 246, 0.1), 
        transparent);
    transition: left 0.6s ease;
}

.nav-link:hover::before {
    left: 100%;
}

/* Active state */
.nav-link:target {
    color: #1d4ed8;
}

.nav-link:target .nav-text {
    transform: translateY(-2px);
}

.nav-link:target::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: currentColor;
    animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* Dropdowns */
.nav-level-1, .nav-level-2 {
    position: absolute;
    background: rgba(15, 15, 15, 0.98);
    backdrop-filter: blur(20px);
    list-style: none;
    min-width: 180px;
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255,255,255,0.05);
    z-index: 100;
}

.nav-level-1 {
    top: 100%;
    left: 0;
}

.nav-level-2 {
    top: 0;
    left: 100%;
}

.nav-item:hover > .nav-level-1,
.nav-level-1 .nav-item:hover > .nav-level-2 {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-level-1 .nav-link,
.nav-level-2 .nav-link {
    padding: 0.875rem 1.25rem;
}

.nav-level-1 .nav-link:hover,
.nav-level-2 .nav-link:hover {
    background: rgba(59, 130, 246, 0.05);
}

.nav-level-1 .nav-link::before,
.nav-level-2 .nav-link::before {
    display: none;
}

/* Focus styles */
.nav-link:focus-visible {
    background: rgba(59, 130, 246, 0.1);
    outline: none;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-level-0 {
        flex-direction: column;
        border: none;
    }
    
    .nav-item:not(:last-child)::after {
        display: none;
    }
    
    .nav-item:not(:last-child) {
        border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    
    .nav-link {
        padding: 1.25rem 1rem;
    }
    
    .nav-level-1, .nav-level-2 {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: rgba(30, 41, 59, 0.3);
        backdrop-filter: none;
        border: none;
        padding-left: 2rem;
        margin: 0;
    }
}