body {
    background: radial-gradient(circle, #001f00, #000);
    color: #00ff00;
    font-family: "Courier New", monospace;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    animation: flickerBackground 3s infinite;
}

@keyframes flickerBackground {
    0%, 100% { background: radial-gradient(circle, #002200, #000); }
    50% { background: radial-gradient(circle, #001000, #000); }
}

.container {
    text-align: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.95);
    border: 2px solid #00ff00;
    border-radius: 15px;
    box-shadow: 0 0 25px #00ff00;
    max-width: 600px;
    width: 90%;
}

.logo {
    margin-bottom: 20px;
    animation: flicker 2s infinite;
    max-width: 80px;
}

@keyframes flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

h1 {
    font-size: 2.5rem;
    text-transform: uppercase;
    margin-bottom: 20px;
    color: #00ff00;
    animation: glitch 1.5s infinite;
}

@keyframes glitch {
    0%, 100% { text-shadow: 2px 2px #ff0000, -2px -2px #00ff00; }
    50% { text-shadow: -2px 2px #00ff00, 2px -2px #ff0000; }
}

.feature-list {
    text-align: left;
    margin: 20px 0;
}

.feature-item {
    margin-bottom: 15px;
    padding: 10px;
    border: 1px solid #00ff00;
    border-radius: 5px;
    background: rgba(0, 255, 0, 0.1);
    color: #00ff00;
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(0, 255, 0, 0.2);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.5);
}

select {
    padding: 10px;
    font-size: 1rem;
    color: #00ff00;
    background: black;
    border: 2px solid #00ff00;
    border-radius: 5px;
    width: 100%;
    transition: all 0.3s ease;
    margin-bottom: 10px;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.5);
}

input[type="text"] {
    padding: 10px;
    width: 90%;
    max-width: 400px;
    border: 2px solid #00ff00;
    border-radius: 5px;
    margin-bottom: 10px;
    background: black;
    color: #00ff00;
    text-align: center;
    font-size: 1.2rem;
}

.btn {
    background: linear-gradient(90deg, #00ff00, #00cc00);
    color: black;
    padding: 15px 30px;
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    border-radius: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
    margin-top: 20px;
}

.btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px #00ff00;
}

.error-message {
    color: red;
    font-size: 1rem;
    margin-top: 20px;
    display: none;
}

.progress-container {
    display: none;
    margin-top: 30px;
    position: relative;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid #00ff00;
    border-radius: 15px;
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #00ff00, #00cc00);
    transition: width 0.1s ease;
}

.progress-text {
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
    text-align: center;
    color: #003c00;
    font-size: 1rem;
    line-height: 30px;
    font-weight: bold;
}

.success-message {
    display: none;
    font-size: 1.2rem;
    color: green;
}

footer {
    margin-top: 30px;
    font-size: 0.8rem;
    color: #00ff00;
}