body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: radial-gradient(circle at center, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    overflow: hidden;
    position: relative;
}

/* Animated Background Particles */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0MCIgaGVpZ2h0PSI0MCIgdmlld0JveD0iMCAwIDQwIDQwIj48ZyBmaWxsLXJ1bGU9ImV2ZW5vZGQiPjxwYXRoIGQ9Ik0wIDQwTDQwIDBIMjBMMCAyME00MCA0MFYyMEwwIDQwIiBmaWxsPSIjZmZmIiBmaWxsLW9wYWNpdHk9IjAuMDUiLz48L2c+PC9zdmc+');
    opacity: 0.3;
    z-index: -1;
    animation: slideBg 20s linear infinite;
}

@keyframes slideBg {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 100% 100%;
    }
}

.container {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 25px;
    padding: 50px;
    width: 90%;
    max-width: 450px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5),
        inset 0 0 20px rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: fadeIn 1s cubic-bezier(0.2, 0.8, 0.2, 1);
    transform-style: preserve-3d;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.logo {
    width: 120px;
    height: 120px;
    margin-bottom: 25px;
    border-radius: 50%;
    box-shadow: 0 0 30px rgba(0, 210, 255, 0.6);
    animation: pulse 3s infinite ease-in-out;
    border: 3px solid rgba(255, 255, 255, 0.2);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 210, 255, 0.4);
        transform: scale(1);
    }

    50% {
        box-shadow: 0 0 0 25px rgba(0, 210, 255, 0);
        transform: scale(1.05);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(0, 210, 255, 0);
        transform: scale(1);
    }
}

h1 {
    margin-bottom: 35px;
    font-size: 2.5em;
    font-weight: 700;
    background: linear-gradient(to right, #fff, #a5f3fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    letter-spacing: 1px;
}

.form-group {
    margin-bottom: 25px;
    text-align: left;
    position: relative;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #a5f3fc;
    font-size: 0.95em;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

select {
    width: 100%;
    padding: 15px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
    color: #fff;
    font-size: 1.1em;
    outline: none;
    transition: all 0.3s ease;
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2300d2ff%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 15px top 50%;
    background-size: 12px auto;
}

select:hover {
    background-color: rgba(0, 0, 0, 0.3);
    border-color: rgba(0, 210, 255, 0.5);
}

select:focus {
    background-color: rgba(0, 0, 0, 0.4);
    border-color: #00d2ff;
    box-shadow: 0 0 15px rgba(0, 210, 255, 0.3);
}

select option {
    background: #16213e;
    color: #fff;
    padding: 10px;
}

button {
    width: 100%;
    padding: 15px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
    color: #fff;
    font-size: 1.2em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.3);
    position: relative;
    overflow: hidden;
}

button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 210, 255, 0.5);
}

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

button:active {
    transform: translateY(-1px);
}

.hidden {
    display: none;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.visible {
    display: block;
    opacity: 1;
    transform: translateY(0);
}