/* --- Global Variables --- */
:root {
    --primary-green: #179248;
    --dark-text: #222222;
    --light-bg: #e8f3e9;
    --white: #ffffff;
}

/* --- Header & Navigation Layout --- */
.main-header {
    background-color: var(--light-bg);
    padding: 15px 0;
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.header-container {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
}

.logo img { height: 55px; display: block; }

/* Desktop Navigation */
.nav-menu ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-menu ul li a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    transition: 0.3s;
}

.nav-menu ul li a:hover { color: var(--primary-green); }

/* --- Hamburger Button Design --- */
.hamburger {
    display: none; /* Hidden on Desktop */
    cursor: pointer;
    background: none;
    border: none;
    flex-direction: column;
    gap: 6px;
    z-index: 1100;
    padding: 10px;
}

.bar {
    display: block;
    width: 28px;
    height: 3px;
    background-color: var(--primary-green);
    transition: 0.3s ease-in-out;
}

/* --- Responsive Mobile Logic (992px and below) --- */
@media (max-width: 992px) {
    .hamburger { display: flex; }

    /* Hamburger to 'X' Animation */
    .hamburger.is-active .bar:nth-child(2) { opacity: 0; }
    .hamburger.is-active .bar:nth-child(1) { transform: translateY(9px) rotate(45deg); }
    .hamburger.is-active .bar:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%; /* Hidden off-screen */
        width: 75%;  /* Drawer width */
        height: 100vh;
        background-color: var(--white);
        padding: 100px 0 40px 0;
        transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 5px 0 15px rgba(0,0,0,0.1);
        z-index: 1050;
    }

    .nav-menu.is-active { left: 0; }

    .nav-menu ul {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }

    .nav-menu ul li { width: 100%; }

    /* Zebra Striping for better readability */
    .nav-menu ul li:nth-child(odd) {
        background-color: rgba(23, 146, 72, 0.08);
    }

    .nav-menu ul li a {
        display: block;
        padding: 18px 40px;
        font-size: 18px;
        width: 100%;
        border-bottom: 1px solid rgba(0,0,0,0.03);
    }
}