:root {
    --cyan: #00f2ff;
    --purple: #bc13fe;
    --dark: #020205;
}

body {
    background: var(--dark);
    background-image: radial-gradient(circle at 50% 50%, #111029 0%, #020205 100%);
    color: white;
    font-family: 'Inter', sans-serif;
    margin: 0;
}

.glass {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
}

.glow-text {
    text-shadow: 0 0 20px var(--cyan);
}

/* Theme Switcher Positioning */
.theme-switch {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    cursor: pointer;
}

/* Subject Card Animations */
.subject-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.subject-card:hover {
    background: rgba(0, 242, 255, 0.1);
    border-color: var(--cyan);
    transform: translateY(-5px);
}