:root {
    --primary-blue: #4da6ff;
    --accent-glow: rgba(77, 166, 255, 0.2);
    --card-bg: rgba(16, 16, 18, 0.85);
    --card-border: rgba(255, 255, 255, 0.12);
    --text-color: #e0e0e0;
    --text-muted: #cccccc;
    --neon-cyan: #00e5ff;
    --neon-green: #00ff66;
}

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

body {
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0d1117;
    margin: 0;
    padding: 0;
    position: relative;
    overflow-x: hidden;
}

.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    /* ekhane center center er jaigay center 35% ba proyojon moto diye background niche namano jabe */
    background: radial-gradient(circle at center, rgba(13, 17, 23, 0.4) 0%, rgba(2, 4, 8, 0.9) 100%), url('image.jpeg') no-repeat center 32% / cover;
    z-index: -2;
}

#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 30px 20px;
    position: relative;
    z-index: 2;
}

@media (max-width: 768px) {
    .container {
        padding: 15px 10px;
    }
    
    .inner-page-flex, .biodata-section-flex, .radio-content-grid {
        flex-direction: column !important;
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }

    .sidebar-nav, .bio-image-box {
        width: 100% !important;
        flex: none !important;
        position: static !important;
    }
}