/* =========================================
   Base Styles
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background: #0a0f24;
    color: #fff;
    line-height: 1.6;
    /* Default padding top to account for fixed header height */
    padding-top: 70px;
}

    .container {
      max-width: 1000px;
      margin: auto;
    }
    .card {
      background: #0a0f24;
      padding: 20px;
      margin: 20px 0;
      border-radius: 12px;
      box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    }
    h1, h2 {
      color: #2c3e50;
    }
    ul {
      padding-left: 20px;
    }
/* =========================================
   Header Styles (Default / Desktop)
   ========================================= */
header {
    background: rgba(26, 31, 53, 0.95);
    padding: 0 1rem; /* Adjusted padding, 1rem vertical might be too much */
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: space-between; /* Distribute space */
    flex-wrap: wrap; /* Allow items to wrap if needed */
    height: 70px; /* Explicitly set height matching body padding-top */
    transition: height 0.3s ease, padding 0.3s ease; /* Smooth transition for mobile */
}

header .ra-logo, header .logo {
    height: 50px; /* Adjust as needed, ensure it fits within header height */
    margin-right: 1rem; /* Space between logo and nav */
    display: block; /* Ensure proper spacing */
    flex-shrink: 0; /* Prevent logo from shrinking */
}

/* =========================================
   Navigation Styles (Default / Desktop)
   ========================================= */
nav ul {
    list-style-type: none;
    display: flex; /* Horizontal layout */
    gap: 1.5rem;
    padding: 0;
    margin: 0; /* Reset default ul margin */
    align-items: center; /* Vertically align nav items with logo */
}

/* Add base link styling if necessary */
nav a {
    color: #fff;
    text-decoration: none;
    padding: 0.5rem 1rem; /* Example padding */
    display: inline-block;
}

/* Hide mobile menu toggle on larger screens */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem; /* Adjust size as needed */
    cursor: pointer;
    padding: 0.5rem; /* Add some padding for easier clicking */
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
    /* Calculate height based on default header */
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    /* margin-top: -70px; /* This negative margin is often unnecessary
                           if body padding-top is used correctly.
                           It might cause issues if the header height changes.
                           Consider removing if layout works without it. */
}

/* =========================================
   Mobile Styles & Overrides (max-width: 768px)
   ========================================= */
@media (max-width: 768px) {
    body {
        /* Adjust body padding for smaller mobile header */
        padding-top: 60px;
    }

    header {
        /* Adjust header height for mobile */
        height: 60px;
        padding: 0 1rem; /* Ensure padding is suitable */
    }

    /* Adjust logo size for smaller header if needed */
    header .ra-logo, header .logo {
        height: 40px; /* Example smaller size */
    }

    /* Mobile Navigation Container */
    nav {
        position: fixed;
        top: 60px; /* Position below the mobile header */
        left: -100%; /* Start off-screen */
        width: 100%;
        height: calc(100vh - 60px); /* Full height minus header */
        background: rgba(26, 31, 53, 0.95); /* Same as header or slightly different */
        transition: left 0.3s ease;
        z-index: 999; /* Below header but above content */
        overflow-y: auto; /* Allow scrolling if nav items exceed screen height */
    }

    /* Class added via JS to show the menu */
    nav.active {
        left: 0; /* Slide menu into view */
    }

    /* Mobile Navigation List */
    nav ul {
        flex-direction: column; /* Stack items vertically */
        gap: 0; /* Remove gap, padding on 'a' will handle spacing */
        padding: 1rem 0; /* Add some vertical padding */
        align-items: stretch; /* Stretch items to full width */
    }

    /* Mobile Navigation Links */
    nav a {
        display: block; /* Make links full width */
        width: 100%;
        padding: 1rem 1.5rem; /* Generous padding for touch targets */
        text-align: center; /* Center text or left-align as preferred */
        border-bottom: 1px solid rgba(255, 255, 255, 0.1); /* Optional separator */
    }
     nav ul li:last-child a {
         border-bottom: none; /* Remove border from last item */
    }

    /* Show hamburger menu icon */
    .menu-toggle {
        display: block; /* Show the toggle button on mobile */
    }

    /* Adjust Hero section for mobile header */
    .hero {
         min-height: calc(100vh - 60px); /* Account for smaller mobile header */
         /* margin-top: -60px; /* Adjust negative margin if used */
    }
}

/* =========================================
   ... rest of your existing styles ...
   ========================================= */