body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(-45deg, #ffb347, #ffcc33, #ff8c00, #ffd700);
    background-size: 400% 400%;
    animation: gradientMove 12s ease infinite;
    color: #2b1a00;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

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

/* ✨ Floating Glass Card */
.box {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(16px);
    padding: 35px;
    border-radius: 20px;
    width: 360px;
    text-align: center;
    box-shadow: 0 15px 40px rgba(255, 140, 0, 0.6);
    animation: floatCard 5s ease-in-out infinite;
    position: relative;
}

@keyframes floatCard {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

h2 {
    text-shadow: 0 0 10px #ffae00;
}

button {
    margin: 6px 4px;
    padding: 10px 16px;
    border-radius: 10px;
    border: none;
    background: linear-gradient(45deg, #ffd700, #ff8c00);
    color: #3b2200;
    font-weight: bold;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Button glow */
button:hover {
    transform: scale(1.08);
    box-shadow: 0 0 15px #ffae00;
}

/* ✨ Shine sweep animation */
button::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255,255,255,0.5), transparent);
    transition: 0.6s;
}

button:hover::after {
    left: 100%;
}

input {
    padding: 10px;
    width: 85%;
    border-radius: 8px;
    border: none;
    background: #fff6d5;
    color: #3b2200;
    font-weight: bold;
    box-shadow: inset 0 0 8px rgba(255, 140, 0, 0.5);
    transition: 0.2s;
}

input:focus {
    outline: none;
    box-shadow: 0 0 10px #ffae00;
}

#result {
    margin-top: 12px;
    font-weight: bold;
    color: Black;
    text-shadow: 0 0 8px Yellow;
    animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
    0%,100% { text-shadow: 0 0 6px #ff5e00; }
    50% { text-shadow: 0 0 18px #ff5e00; }
}

body::before {
    content: "";
    position: absolute;
    width: 200%;
    height: 200%;
    background-image: radial-gradient(rgba(255,255,255,0.4) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: sparkleMove 20s linear infinite;
    opacity: 0.2;
}

@keyframes sparkleMove {
    from { transform: translate(0,0); }
    to { transform: translate(-200px,-200px); }
}