:root {
    --bg-primary: #0a0a0f;
    --purple-400: #a78bfa;
    --purple-600: #7c3aed;
    --text-primary: #f0eef5;
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

::selection {
    background: var(--purple-600);
    color: white;
}

.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--purple-400);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(100vh) scale(0);
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        opacity: 0;
        transform: translateY(-10vh) scale(1);
    }
}

.centered-wrapper {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    gap: 2rem;
    position: relative;
    z-index: 10;
}

.square-card {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 250px;
    height: 250px;
    background: rgba(17, 17, 24, 0.7);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 15px rgba(139, 92, 246, 0.1);
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.square-card:hover {
    transform: translateY(-5px);
    border-color: rgba(139, 92, 246, 0.6);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 25px rgba(139, 92, 246, 0.2);
    background: rgba(25, 25, 38, 0.8);
}

.accent-text {
    color: var(--purple-600);
}