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

body {
    background: linear-gradient(135deg, #1a1a2e, #16213e, #1a1a2e);
    color: #fff;
    font-family: 'Arial', sans-serif;
    overflow-x: hidden;
}

#particles {
    position: fixed;
    width: 100%;
    height: 100%;
    z-index: 1;
}

header {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
}

h1 {
    font-size: 4rem;
    text-align: center;
    margin-bottom: 1rem;
    animation: fadeIn 2s ease-in;
}

.subtitle {
    font-size: 1.5rem;
    opacity: 0.8;
}

section {
    min-height: 100vh;
    padding: 4rem 2rem;
    position: relative;
    z-index: 2;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}