/* =========================================
   Global Variables & Reset
   ========================================= */
:root {
    --primary-blue: #005A9C; /* Professional Industrial Blue */
    --primary-orange: #F37021; /* Highlight Orange */
    --dark-black: #1A1A1A;
    --text-gray: #4A4A4A;
    --light-bg: #F4F6F9;
    --white: #FFFFFF;
    --transition: all 0.3s ease-in-out;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-gray);
    background-color: var(--light-bg);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================
   Header Styling
   ========================================= */
.site-header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 15px 0;
}

.site-header.sticky {
    padding: 8px 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 60px; /* Kept proportionately sized */
    width: auto;
    transition: var(--transition);
    display: block;
}

.site-header.sticky .logo img {
    height: 50px;
}

.main-nav .nav-links {
    list-style: none;
    display: flex;
    gap: 30px;
}

.main-nav .nav-links li a {
    text-decoration: none;
    color: var(--dark-black);
    font-weight: 500;
    font-size: 16px;
    transition: var(--transition);
    position: relative;
}

.main-nav .nav-links li a:hover,
.main-nav .nav-links li a.active {
    color: var(--primary-blue);
}

.main-nav .nav-links li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--primary-orange);
    transition: var(--transition);
}

.main-nav .nav-links li a:hover::after,
.main-nav .nav-links li a.active::after {
    width: 100%;
}

/* Mobile Menu Icon */
.mobile-menu-icon {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.mobile-menu-icon span {
    width: 25px;
    height: 3px;
    background-color: var(--dark-black);
    transition: var(--transition);
}

/* =========================================
   Responsive Design (Tablet & Mobile)
   ========================================= */
@media (max-width: 768px) {
    .mobile-menu-icon {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: var(--transition);
    }

    .main-nav.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
    }

    .main-nav .nav-links {
        flex-direction: column;
        gap: 0;
        text-align: center;
        padding: 20px 0;
    }

    .main-nav .nav-links li {
        margin: 15px 0;
    }
}