/* MetricVera Kurumsal Kimliği */
:root {
    --primary-color: #0f172a; /* Gece Mavisi (Otorite) */
    --accent-color: #2563eb;  /* Canlı Mavi (Teknoloji) */
    --success-color: #10b981; /* Yeşil (Hesaplama Sonucu) */
    --bg-light: #f8fafc;
}

body { background: var(--bg-light); color: #334155; }
.navbar { background: var(--primary-color) !important; border-bottom: 3px solid var(--accent-color); }
.hero-section { 
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); 
    color: white; 
    padding: 60px 0;
    margin-bottom: 40px;
}
.cat-card { 
    border-radius: 16px; 
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}
.cat-card:hover { 
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}
.result-display { color: var(--success-color); font-size: 2.5rem; }
.btn-primary { background-color: var(--accent-color); border: none; padding: 10px 25px; border-radius: 8px; }
.icon-box { transition: all 0.3s ease; }
.cat-card:hover .icon-box { background-color: var(--accent-color) !important; color: white !important; transform: rotate(10deg); }
.hero-section { border-radius: 0 0 50px 50px; }
.navbar-brand img { filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2)); }