/* Screen reader only (accessibility) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
/* Sticky Navigation */
.navbar {
    position: relative;
    top: 0;
    background: rgba(237, 247, 247, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(237, 247, 247, 0.3);
    border-bottom: 1px solid rgba(237, 247, 247, 0.2);
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 0;
    margin: 1rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(237, 247, 247, 0.95);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #2C5F41;
    cursor: pointer;
    letter-spacing: -0.02em;
    margin: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #2C5F41;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-link:hover {
    color: #1B3E2A;
    background: rgba(44, 95, 65, 0.1);
    border-radius: 999px;
}

.nav-link.active {
    color: #FFFFFF;
    background: #223849;
    border-radius: 999px;
    box-shadow: 0 2px 8px rgba(34, 56, 73, 0.3);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #2C5F41;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 80%;
}

.nav-link.active::after {
    width: 0;
}

.nav-cta {
    margin-left: 2rem;
}

/* Mobile Navigation */
/* Mobile Navigation */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: #2C5F41;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Mobile hamburger styles */
@media screen and (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    /* Hide navigation links by default on mobile */
    .nav-menu {
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}