body {
    background-color: #000;
    color: #fff;
    font-family: 'VT323', monospace;
    display: grid;
    place-items: center;
    min-height: 100vh;
    margin: 0;
}

.terminal {
    width: 700px;
    max-width: 90%;
    height: 80vh;
    max-height: 600px;
    display: flex;
    flex-direction: column;
    border: 2px solid #fff;
    background-color: #000;
    box-sizing: border-box;
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.1);
}

footer, nav, section {
    padding: 15px;
}
header, footer, nav {
    background-color: #0d00ff;
    border-top: 2px solid #fff;
    padding: 15px
}
header {
    border-bottom: 2px solid #fff;
    background-color: #000dff;
    font-size: 2rem;
    color: rgb(255, 255, 255);
}

#controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

#controls .controls-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

#controls-logo {
    height: 130px;
    width: auto;
    align-self: center;
    padding-right: 8px;

}

.helper-box {
    flex: 0 0 260px;
    align-self: center;
    position: relative;
    padding: 8px 10px 8px 32px;
    background-color: #ffdd00; /* warning yellow */
    border: 3px solid #000;    /* strong black border */
    color: #000;               /* black text like caution signs */
}
.helper-box::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 14px;
    background: repeating-linear-gradient(45deg, #000 0 6px, #ffdd00 6px 12px);
    border-right: 2px solid #000;
}
.helper-text {
    color: inherit;
    font-size: 1.2rem;
    line-height: 1.0;
    font-weight: 700;
}
.helper-text::before {
    content: "⚠ ";
}

#source-link {
    display: block;
}

#output-log {
    flex-grow: 1;
    overflow-y: auto;
    background-color: #000;
}

#output-log pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

#controls .line {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}
#controls .line:last-child {
    margin-bottom: 0;
}

span, select, button, a {
    font-family: 'VT323', monospace;
    font-size: 18px;
}

select, button {
    background-color: #0d00ff;
    color: #ffffff;
    border: 3px solid #ffffff;
    padding: 5px 10px;
    margin-left: 10px;
    cursor: pointer;
}

select:hover, button:hover {
    background-color: #ffdd00;
    color: #000000;
}
button:active {
    background-color: #111;
}

.extra-usage {
    border-top: 1px dashed rgba(255, 255, 255, 0.3);
    padding-top: 8px;
    margin-top: 4px;
}

#erase-btn {
    background-color: #8b0000;
    border-color: #ff4444;
    color: #ffffff;
}
#erase-btn:hover {
    background-color: #ff4444;
    color: #000000;
}

a {
    color: rgb(255, 247, 0);
    text-decoration: underline;
}
a:hover {
    color: rgb(229, 255, 136);
}