body {
    font-family: 'Courier New', Courier, monospace;
    background-color: #000;
    color: #33CC33;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 40px auto;
    padding: 20px;
    background-color: #111;
    border: 1px solid #33CC33;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

h1 {
    color: #33CC33;
    text-align: center;
}

.input-group {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
}

.input-group input[type="text"] {
    flex: 1;
    margin: 0;
    font-size: 1.2em;
}

input[type="text"] {
    width: 80%;
    padding: 10px;
    margin: 10px 0;
    background-color: #000;
    color: #33CC33;
    border: 1px solid #33CC33;
    font-size: 1.2em;
}

button {
    background-color: #111;
    color: #33CC33;
    border: 1px solid #33CC33;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    margin: 5px;
    transition: background-color 0.2s ease-in-out;
}

button:hover {
    background-color: #222;
}

button:active {
    background-color: #333;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

ul {
    list-style-type: none;
    padding: 0;
    margin: 10px 0;
}

li {
    padding: 5px 0;
    border-bottom: 1px solid #33CC33;
    font-size: 1.2em;
}

header {
    background-color: #111;
    padding: 1em;
    text-align: center;
    border-bottom: 1px solid #33CC33;
}

#pi-symbol {
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-size: 24px;
    color: #33CC33;
}

#pi-symbol a {
    color: #33CC33;
    text-decoration: none;
}

#pi-symbol a:hover {
    color: #66FF66;
    text-shadow: 0 0 5px #33CC33;
}

#pi-symbol a:active {
    color: #00FF00;
    text-shadow: 0 0 10px #33CC33;
}

li.struck {
    text-decoration: line-through;
    opacity: 0.6;
}

#loadingBarContainer {
    width: 100%;
    background-color: #222;
    border: 1px solid #33CC33;
    margin-top: 20px;
    height: 20px;
    overflow: hidden;
}

#loadingBar {
    height: 100%;
    width: 0%;
    background-color: #33CC33;
    animation: loadingAnim 2s linear forwards;
}

@keyframes loadingAnim {
    from { width: 0%; }
    to { width: 100%; }
}