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

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    max-width: 500px;
    width: 100%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    text-align: center;
}

header h1 {
    color: #333;
    font-size: 28px;
    margin-bottom: 10px;
}

.campaign-period {
    color: #666;
    font-size: 14px;
}

.omikuji-box {
    margin: 40px 0;
}

.omikuji-paper {
    width: 200px;
    height: 300px;
    background: linear-gradient(135deg, #f5f5dc 0%, #ffefd5 100%);
    border-radius: 10px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    position: relative;
}

.omikuji-text {
    font-size: 80px;
    color: #8b4513;
    font-weight: bold;
}

.draw-button {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a5a 100%);
    color: white;
    border: none;
    padding: 20px 60px;
    font-size: 24px;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

.draw-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(255, 107, 107, 0.5);
}

.draw-button:active {
    transform: translateY(0);
}

.draw-button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.hidden {
    display: none;
}

#result-area {
    animation: fadeIn 0.5s ease;
}

#result-message {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    padding: 20px;
    border-radius: 10px;
}

.result-winner {
    color: #fff;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    animation: pulse 1s ease-in-out infinite;
}

.result-loser {
    color: #666;
    background: #f0f0f0;
}

#prize-display {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 30px;
    color: #333;
}

.winner-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

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

.back-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 18px;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.back-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

footer p {
    color: #999;
    font-size: 12px;
    margin: 10px 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}