@keyframes gradient-animation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-family: 'M PLUS Rounded 1c', sans-serif;
    margin: 0;
    padding: 10px;
    background: linear-gradient(-45deg, #fec5e5, #fda4b8, #ffb2a7, #ffd7a1);
    background-size: 400% 400%;
    animation: gradient-animation 15s ease infinite;
    overflow: hidden;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
}

.container {
    text-align: center;
    padding: 25px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    box-shadow: 0 8px 32px 0 rgba(193, 85, 129, 0.37);
    border: 1px solid rgba(255, 255, 255, 0.18);
    position: relative; 
    width: 100%;
    max-width: 420px;
}

.gif {
    width: 180px;
    height: 180px;
    margin-bottom: 15px;
    object-fit: contain;
    border-radius: 15px;
}

.question {
    font-size: 24px;
    font-weight: 700;
    color: #4b415d;
    margin-bottom: 25px;
    line-height: 1.4;
}

.btn-group {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 30px;
    border: 3px solid;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    background-color: #fff;
    transition: all 0.2s ease-in-out;
}

.btn:active {
    transform: scale(0.97);
}

#yes-btn {
    border-color: #ff74a4;
    color: #ff74a4;
}
#yes-btn:hover {
    background-color: #ff74a4;
    color: #fff;
}

#no-btn {
    border-color: #ff9d8f;
    color: #ff9d8f;
    transition: all 0.2s ease-in-out, top 0.4s ease-in-out, left 0.4s ease-in-out;
}
#no-btn:hover {
    background-color: #ff9d8f;
    color: #fff;
}

.creator-credit {
    position: fixed;
    top: 15px;
    left: 15px;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    opacity: 0.8;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
    background-color: rgba(0,0,0,0.1);
    padding: 5px 10px;
    border-radius: 10px;
}

@media (max-width: 600px) {
    .container { padding: 20px 15px; }
    .gif { width: clamp(140px, 40vw, 160px); height: clamp(140px, 40vw, 160px); }
    .question { font-size: clamp(18px, 5vw, 22px); }
    .btn { padding: 12px 25px; font-size: 16px; }
    .creator-credit { font-size: 10px; padding: 3px 8px; }
}