* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Particle Canvas Target */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    pointer-events: none;
}

/* Sidebar Navigation Layout */
.sidebar {
    width: 300px;
    background-color: rgba(13, 19, 34, 0.85);
    backdrop-filter: blur(10px);
    padding: 2.5rem 2rem;
    position: fixed;
    height: 100vh;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    z-index: 10;
}

/* Main Content Wrapper */
.main-content {
    margin-left: 300px;
    padding: 3rem 4rem;
    width: calc(100% - 300px);
    position: relative;
    z-index: 1;
}

/* Responsive Media Queries */
@media (max-width: 1100px) {
    .hero-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    body {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 2rem 1.5rem;
    }
}