* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Share Tech Mono', monospace;
}
body {
    height: 100vh;
    background: #000;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 60px;
    overflow: hidden;
    position: relative;
}
.container {
    background: #000;
    padding: 35px;
    border-radius: 10px;
    border: 2px solid white;
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.2);
    width: 400px;
    text-align: center;
    transform: translateY(-100vh);
    animation: slideDown 1s ease-out forwards;
}
@keyframes slideDown {
    to {
        transform: translateY(0);
    }
}
h1 {
    margin-bottom: 25px;
    font-size: 30px;
    letter-spacing: 1px;
    color: #fff;
    text-shadow: 0 0 5px #fff;
}
.dob-inputs {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}
.dob-inputs input {
    width: 30%;
    padding: 10px;
    border: 1px solid white;
    background: transparent;
    color: #fff;
    border-radius: 8px;
    font-size: 16px;
    text-align: center;
    outline: none;
    transition: all 0.3s ease;
    animation: inputGlow 1.5s infinite alternate;
}
.dob-inputs input:focus {
    background: #fff;
    color: #000;
}
@keyframes inputGlow {
    from {
        box-shadow: 0 0 5px #fff;
    }
    to {
        box-shadow: 0 0 15px #fff, inset 0 0 5px #fff;
    }
}
.button-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}
.btn {
    padding: 10px 20px;
    border: 2px solid #fff;
    background: transparent;
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
    font-weight: bold;
    font-size: 16px;
}
.btn:hover {
    background: #fff;
    color: #000;
    box-shadow: 0 0 10px #fff;
}
.result-box {
    margin-top: 30px;
    padding: 15px;
    border: 2px solid white;
    border-radius: 10px;
    font-size: 20px;
    letter-spacing: 1px;
    opacity: 0;
    transform: translateY(30px);
    transition: 0.5s ease;
    background: rgba(255, 255, 255, 0.05);
}
.result-box.show {
    opacity: 1;
    transform: translateY(0);
}
footer {
    position: absolute;
    bottom: 10px;
    font-size: 13px;
    color: #555;
    text-align: center;
    width: 100%;
}
