:root {
    --primary-color: rgba(75, 75, 255, 0.7);
    --secondary-color: rgba(255, 75, 75, 0.7);
    --bg-color: rgba(230, 230, 250, 0.85);
    --shadow-color: rgba(0, 0, 0, 0.2);
    --highlight-color: rgba(255, 255, 255, 0.7);
}

body {
    font-family: 'Arial', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #e0e5ec, #f0f5fa);
    margin: 0;
    overflow: hidden;
    perspective: 1000px;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    transform-style: preserve-3d;
    position: relative;
    z-index: 1;
}

h1 {
    color: rgba(0, 0, 0, 0.7);
    text-shadow: 3px 3px 6px var(--shadow-color), 
                -3px -3px 6px var(--highlight-color);
    font-size: 2.5rem;
    margin: 0;
    transform: translateZ(50px);
}

.game-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 20px;
    width: 300px;
    height: 300px;
    transform: rotateX(10deg) rotateY(-10deg) translateZ(50px);
    transform-style: preserve-3d;
}

.cell {
    background: var(--bg-color);
    border: none;
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3rem;
    cursor: pointer;
    transition: all 0.3s ease;
    transform-style: preserve-3d;
    position: relative;
    box-shadow: 8px 8px 15px var(--shadow-color), 
               -8px -8px 15px var(--highlight-color),
               inset 3px 3px 5px rgba(255, 255, 255, 0.1),
               inset -3px -3px 5px rgba(0, 0, 0, 0.1);
}

.cell:hover {
    transform: translateY(-5px) translateZ(10px);
    box-shadow: 12px 12px 20px var(--shadow-color), 
               -12px -12px 20px var(--highlight-color),
               inset 3px 3px 5px rgba(255, 255, 255, 0.1),
               inset -3px -3px 5px rgba(0, 0, 0, 0.1);
}

.cell:active {
    transform: translateY(0) translateZ(5px);
    box-shadow: 5px 5px 10px var(--shadow-color), 
               -5px -5px 10px var(--highlight-color),
               inset 3px 3px 5px rgba(255, 255, 255, 0.1),
               inset -3px -3px 5px rgba(0, 0, 0, 0.1);
}

.cell.x {
    color: var(--primary-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.cell.o {
    color: var(--secondary-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.winning-cell {
    animation: pulse 0.5s infinite alternate;
    transform: translateZ(15px);
}

@keyframes pulse {
    from {
        transform: scale(1) translateZ(15px);
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    }
    to {
        transform: scale(1.1) translateZ(20px);
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.8);
    }
}

.status {
    font-size: 1.5rem;
    color: rgba(133, 57, 254, 0.7);
    text-shadow: 2px 2px 4px var(--shadow-color), 
                -2px -2px 4px var(--highlight-color);
    transform: translateZ(30px);
}

.reset-btn {
    padding: 12px 25px;
    background: var(--bg-color);
    border: none;
    border-radius: 15px;
    font-size: 1rem;
    font-weight: bold;
    color: rgba(0, 0, 0, 0.7);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 5px 5px 10px var(--shadow-color), 
               -5px -5px 10px var(--highlight-color);
    transform: translateZ(40px);
}

.reset-btn:hover {
    transform: translateY(-3px) translateZ(45px);
    box-shadow: 8px 8px 15px var(--shadow-color), 
               -8px -8px 15px var(--highlight-color);
}

.reset-btn:active {
    transform: translateY(0) translateZ(40px);
    box-shadow: 3px 3px 5px var(--shadow-color), 
               -3px -3px 5px var(--highlight-color);
}

.bg-element {
    position: absolute;
    border-radius: 50%;
    filter: blur(50px);
    opacity: 0.5;
    z-index: -1;
}

.bg-1 {
    width: 200px;
    height: 200px;
    background: var(--primary-color);
    top: 10%;
    left: 10%;
    animation: float 15s infinite ease-in-out;
}

.bg-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary-color);
    bottom: 10%;
    right: 10%;
    animation: float 20s infinite ease-in-out reverse;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    50% {
        transform: translateY(-50px) translateX(50px);
    }
}

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

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: #f00;
    opacity: 0;
    animation: confetti-fall 3s linear forwards;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}