* {
    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;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
}

.lottery-box {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.numbers-display {
    margin-bottom: 30px;
    text-align: center;
}

.numbers-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
    min-height: 70px;
    align-items: center;
}

.number-ball {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    animation: popIn 0.4s ease-out;
}

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

.bonus-number {
    display: none;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}

.bonus-label {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

.bonus-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
    animation: popIn 0.4s ease-out 0.6s both;
}

.button-group {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    justify-content: center;
}

button {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.draw-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    flex: 1;
    max-width: 350px;
}

.draw-btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.draw-btn:active:not(:disabled) {
    transform: translateY(-1px);
}

.draw-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.reset-btn {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 15px 30px;
}

.reset-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.6);
}

.reset-btn:active {
    transform: translateY(-1px);
}

.info-box {
    background: #f7f7f7;
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    border-left: 4px solid #667eea;
}

.info-box p {
    color: #333;
    font-size: 0.95rem;
    line-height: 1.6;
}

.info-box strong {
    color: #667eea;
}

.result-message {
    display: none;
    color: #764ba2;
    font-weight: bold;
    font-size: 1rem;
    margin-top: 10px;
    padding: 10px;
    background: #f0e6ff;
    border-radius: 10px;
}

footer {
    text-align: center;
    color: white;
    margin-top: 40px;
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 반응형 디자인 */
@media (max-width: 480px) {
    header h1 {
        font-size: 2rem;
    }

    .lottery-box {
        padding: 25px;
    }

    .number-ball {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .button-group {
        flex-direction: column;
    }

    .draw-btn {
        max-width: 100%;
    }
}