/* TEMEL TASARIM */
:root {
    --arka-mavi: #ffffff;
    --metin-beyaz: #ffffff;
    --b2b-kirmizi: red;
    --gölge-rengi: rgba(114, 58, 245, 0.1);
    --transition-speed: 0.3s;
}

.highlight-nav {
    padding: 2.5rem 0;
    margin-top: -1px;
    position: relative;
    z-index: 900;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.nav-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem 1rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all var(--transition-speed) ease;
    text-decoration: none;
    color: var(--arka-mavi);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(4, 4, 80, 0.1);
}

.nav-icon {
    font-size: 2rem;
    color: var(--arka-mavi);
    margin-bottom: 0.8rem;
    transition: all var(--transition-speed) ease;
    z-index: 2;
}

.nav-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--arka-mavi);
    z-index: 2;
}

.nav-desc {
    font-size: 0.8rem;
    color: #555;
    margin: 0;
    z-index: 2;
}

.nav-highlight {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--arka-mavi);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-speed) ease;
}

/* ETKİLEŞİMLER */
.nav-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(4, 4, 80, 0.2);
}

.nav-card:hover .nav-icon {
    transform: scale(1.1);
}

.nav-card:hover .nav-highlight {
    transform: scaleX(1);
}


/* MOBİL UYUMLULUK */
@media (max-width: 768px) {
    .nav-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }
    
    .nav-card {
        padding: 1.2rem 0.5rem;
    }
    
    .nav-icon {
        font-size: 1.8rem;
    }
    
    .nav-title {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .nav-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-icon {
        font-size: 1.6rem;
    }
    
    .nav-desc {
        font-size: 0.7rem;
    }
}

/* KARANLIK MOD */
@media (prefers-color-scheme: dark) {
    .nav-card {
        background: rgba(0, 0, 108, 0.95);
        color: var(--metin-beyaz);
    }
    
    .nav-title {
        color: var(--metin-beyaz);
    }
    
    .nav-desc {
        color: #ccc;
    }
    
    .nav-icon {
        color: var(--metin-beyaz);
    }
}