.site-header {
    width: 100%;
    background: #ffffff;
    border-bottom: 3px solid #28a745;  /* Green border */
    padding: 12px 0;
    box-shadow: 0 3px 10px rgba(40, 167, 69, 0.15);
}

/* Header container */
.header-container {
    max-width: 1200px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

/* Logo */
.logo img {
    height: 55px;
    border: 2px solid #ffffff;   /* Green border around logo */
    padding: 0px;
    border-radius: 6px;
}

/* Menu Links */
.header-menu {
    display: flex;
    gap: 30px;
}

.header-menu a {
    text-decoration: none;
    font-size: 20px;
    font-weight: 700;           /* Bold text */
    color: #166d2e;             /* Dark Green text */
    transition: 0.3s;
    border-bottom: 2px solid transparent;
    padding-bottom: 3px;
}

/* Hover = bright green */
.header-menu a:hover {
    color: #28a745;              /* Bright green on hover */
    border-bottom: 2px solid #28a745;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
    }
    .header-menu {
        gap: 18px;
    }
}