/* --- GLOBAL RESET & TYPOGRAPHY --- */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }
        body {
            background-color: #f8fafc;
            color: #333;
            line-height: 1.6;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        
        /* --- VARIABLES --- */
        :root {
            --primary-orange: #f97316;
            --primary-blue: #0f172a;
            --light-blue: #1e293b;
            --text-muted: #64748b;
            --bg-light: #ffffff;
        }

         /* --- NAVIGATION BAR --- */
         nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: var(--bg-light);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1200; /* was 1000 — must be higher than .nav-overlay's 1050 */
}
       
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-blue);
        }
        .logo span {
            color: var(--primary-orange);
        }
        .nav-links {
            display: flex;
            gap: 25px;
            font-weight: 600;
            font-size: 14px;
        }
        .nav-links a:hover {
            color: var(--primary-orange);
            transition: 0.3s ease;
        }
        .nav-actions {
            display: flex;
            gap: 15px;
        }
        .btn {
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            border: none;
            transition: 0.3s ease;
        }
        .btn-orange {
            background: var(--primary-orange);
            color: white;
        }
        .btn-orange:hover {
            background: #ea580c;
        }
        .btn-outline {
            border: 2px solid var(--primary-blue);
            color: var(--primary-blue);
            background: transparent;
        }
        .btn-outline:hover {
            background: var(--primary-blue);
            color: white;
        }

        /* --- FOOTER --- */
        footer {
            background: var(--light-blue);
            color: white;
            padding: 60px 5% 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            border-bottom: 1px solid #334155;
            padding-bottom: 40px;
            margin-bottom: 20px;
        }
        .footer-logo {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 15px;
        }
        .footer-logo span { color: var(--primary-orange); }
        .footer-col h4 {
            margin-bottom: 20px;
            color: var(--primary-orange);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #cbd5e1;
            font-size: 14px;
        }
        .footer-col ul li a:hover {
            color: white;
        }
        .footer-bottom {
            text-align: center;
            font-size: 13px;
            color: #94a3b8;
        }

        /* --- FLOATING ICONS --- */
        .floating-socials {
            position: fixed;
            bottom: 20px;
            right: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 1000;
        }
        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: white;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            font-size: 12px;
            font-weight: bold;
            color: #333;
            cursor: pointer;
        }
        .whatsapp { background: #25D366; color: white; }
        .messenger { background: #0084FF; color: white; }
        
        /* Responsive */
        @media (max-width: 768px) {
            .nav-links { display: none; } /* Add a hamburger menu in JS later */
            .hero h1 { font-size: 2.5rem; }
            .tracking-bar { flex-direction: column; border-radius: 12px; padding: 15px; gap: 10px; }
            .tracking-bar .track_id, .tracking-bar .track_btn { border-radius: 8px; padding: 15px; }
        }


/* --- HAMBURGER BUTTON (hidden on desktop) --- */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1101;
    position: relative;
}
.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.hamburger.active span {
    background: white; /* visible against the dark full-screen menu */
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* dim backdrop behind the menu */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    z-index: 1050;
}
.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.nav-actions-mobile { display: none; }

@media (max-width: 768px) {
    .hamburger { display: flex; }
    .nav-actions { display: none; } /* desktop-only actions, hidden on mobile */

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 100%;
        background: var(--primary-blue);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 10px;
        transform: translateX(100%);
        transition: transform 0.35s ease;
        z-index: 1100;
    }
    .nav-links.active {
        transform: translateX(0);
    }
    .nav-links a {
        color: white;
        font-size: 22px;
        font-weight: 600;
        padding: 14px 0;
    }
    .nav-links a:hover {
        color: var(--primary-orange);
    }

    .nav-actions-mobile {
        display: flex;
        flex-direction: column;
        gap: 15px;
        margin-top: 30px;
        width: 80%;
    }
    .nav-actions-mobile .btn {
        width: 100%;
        padding: 14px;
    }
    .nav-actions-mobile .btn-outline {
        border-color: white;
        color: white;
    }
    .nav-actions-mobile .btn-outline:hover {
        background: white;
        color: var(--primary-blue);
    }

    body.menu-open {
        overflow: hidden; /* stop background scroll while menu is open */
    }

    .hero h1 { font-size: 2.5rem; }
    .tracking-bar { flex-direction: column; border-radius: 12px; padding: 15px; gap: 10px; }
    .tracking-bar .track_id, .tracking-bar .track_btn { border-radius: 8px; padding: 15px; }
}