:root {
    --neon-blue: #00f3ff;
    --neon-pink: #bc13fe;
    --neon-green: #0aff0a;
    --neon-red: #ff003c;
    --dark-bg: #050b14;
    --glass: rgba(255, 255, 255, 0.05);
}

body {
    font-family: 'Rajdhani', sans-serif;
    background-color: var(--dark-bg);
    color: white;
    overflow: hidden;
    user-select: none;
    margin: 0;
    padding: 0;
}

.font-display {
    font-family: 'Orbitron', sans-serif;
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

::-webkit-scrollbar-thumb {
    background: var(--neon-blue);
    border-radius: 3px;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 10px var(--neon-blue), 0 0 20px var(--neon-blue);
    }
    50% {
        box-shadow: 0 0 20px var(--neon-blue), 0 0 40px var(--neon-blue);
    }
}

@keyframes glitch {
    0% {
        transform: translate(0);
    }
    20% {
        transform: translate(-2px, 2px);
    }
    40% {
        transform: translate(-2px, -2px);
    }
    60% {
        transform: translate(2px, 2px);
    }
    80% {
        transform: translate(2px, -2px);
    }
    100% {
        transform: translate(0);
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.animate-slide-left {
    animation: slideInLeft 0.5s ease-out forwards;
}

.glass-panel {
    background: var(--glass);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.neon-text-blue {
    text-shadow: 0 0 5px var(--neon-blue), 0 0 10px var(--neon-blue);
}

.neon-text-pink {
    text-shadow: 0 0 5px var(--neon-pink), 0 0 10px var(--neon-pink);
}

.option-btn {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.option-btn:hover {
    transform: scale(1.02) translateY(-2px);
    border-color: white;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
}

.option-btn:active {
    transform: scale(0.98);
}

.timer-circle {
    transition: stroke-dashoffset 1s linear;
}

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

.correct-answer {
    background: rgba(10, 255, 10, 0.2) !important;
    border-color: var(--neon-green) !important;
    box-shadow: 0 0 20px var(--neon-green) !important;
}

.wrong-answer {
    background: rgba(255, 0, 60, 0.2) !important;
    border-color: var(--neon-red) !important;
    box-shadow: 0 0 20px var(--neon-red) !important;
}

.shake {
    animation: glitch 0.3s cubic-bezier(.36, .07, .19, .97) both;
}

/* Input Styles */
.neon-input {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--neon-blue);
    color: white;
    padding: 12px 20px;
    font-size: 1.2rem;
    font-family: 'Rajdhani', sans-serif;
    outline: none;
    transition: 0.3s;
    text-align: center;
}

.neon-input:focus {
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.4);
    background: rgba(0, 243, 255, 0.1);
}

/* Lives heart animation */
.lives-heart {
    display: inline-block;
    animation: pulse-glow 1.5s infinite;
}

.lives-lost {
    opacity: 0.3;
    filter: grayscale(100%);
}