/* --- Header & Navigation (Light Blue) --- */
header {
    background: #e0f2fe; 
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid #bae6fd;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px; 
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1e3a8a;
    display: flex;
    align-items: center;
    gap: 8px;
}
.logo i { color: #facc15; background: rgba(30, 58, 138, 0.1); padding: 6px; border-radius: 50%; }
.logo span { color: #475569; font-weight: 400; font-size: 0.65rem; display: block; letter-spacing: 1px; line-height: 1;}

.nav-links { display: flex; gap: 25px; align-items: center; }
.nav-links a { font-weight: 600; color: #1e3a8a; font-size: 0.9rem; }
.nav-links a:hover { color: #0f172a; }
.nav-links a.cta-btn {
    background: #1e3a8a;
    color: #ffffff;
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 700;
}
.nav-links a.cta-btn:hover { transform: translateY(-2px); background: #0f172a; }

.hamburger { display: none; font-size: 1.6rem; cursor: pointer; color: #1e3a8a; }

/* --- Responsive Header --- */
@media (max-width: 768px) {
    .hamburger { display: block; }
    
    .nav-links {
        display: none; 
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        background: #e0f2fe;
        padding: 15px 20px;
        border-top: 2px solid #bae6fd;
        position: absolute; 
        top: 100%;
        left: 0;
        z-index: 999;
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
    }
    .nav-links.active { display: flex; }
    
    .nav-links a {
        text-align: center;
        padding: 12px 0;
        border-bottom: 1px solid rgba(30, 58, 138, 0.1);
        font-size: 1rem;
    }
    .nav-links a:last-child { border-bottom: none; }
    .nav-links a.cta-btn { border-radius: 8px; margin-top: 5px; text-align: center; }
}