body {
    margin: 0;
    padding: 0;
    background-color: #000;
    color: #00ffff;
    font-family: 'Courier New', monospace;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 20px;
}

.terminal {
    background-color: #0a0a0a;
    border: 1px solid #00ffff;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.2);
}

.terminal-header {
    margin-bottom: 20px;
    text-align: center;
    letter-spacing: 2px;
}

#codeInput {
    width: 100%;
    background-color: #000;
    border: none;
    border-bottom: 1px solid #00ffff;
    color: #00ffff;
    font-family: 'Courier New', monospace;
    font-size: 16px;
    padding: 10px 0;
    outline: none;
}

#codeInput::placeholder {
    color: #005555;
}

.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 1000;
}

.loader {
    width: 50px;
    height: 50px;
    border: 3px solid #000;
    border-radius: 50%;
    border-top: 3px solid #00ffff;
    animation: spin 1s linear infinite;
}

.loading-text {
    margin-top: 20px;
    color: #00ffff;
    letter-spacing: 2px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}