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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.container {
    text-align: center;
    position: relative;
    z-index: 10;
}

.title {
    color: white;
    font-size: 3rem;
    margin-bottom: 2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInDown 1s ease-out;
}

.animated-box {
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2rem auto;
    cursor: pointer;
    transition: transform 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.animated-box:hover {
    transform: scale(1.05);
}

.animated-box p {
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    z-index: 2;
    position: relative;
}

.animated-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

.animated-box.rotate {
    animation: rotate 2s ease-in-out;
}

.animated-box.pulse {
    animation: pulse 1s ease-in-out infinite;
}

.animated-box.bounce {
    animation: bounce 1s ease-in-out;
}

.btn {
    background: white;
    color: #667eea;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    border-radius: 50px;
    cursor: pointer;
    font-weight: bold;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    margin-top: 2rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(0, 0, 0, 0.3);
}

.btn:active {
    transform: translateY(0);
}

.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: white;
    border-radius: 50%;
    opacity: 0.7;
    animation: float 3s ease-in-out infinite;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes rotate {
    0% {
        transform: rotate(0deg) scale(1);
    }
    50% {
        transform: rotate(180deg) scale(1.2);
    }
    100% {
        transform: rotate(360deg) scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-30px);
    }
}

@keyframes shine {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0.3;
    }
}