/* Retro mainframe terminal styling */
body {
    font-family: 'Courier New', Courier, monospace;
    background-color: #000;
    color: #0f0;
    margin: 10;
    padding: 0;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(0, 255, 0, 0.05) 0.5px, transparent 0.5px),
        radial-gradient(circle at 90% 80%, rgba(0, 255, 0, 0.03) 0.5px, transparent 0.5px),
        radial-gradient(circle at 70% 30%, rgba(0, 255, 0, 0.02) 0.5px, transparent 0.5px);
    background-size: 200px 200px;
}

    .box {
        height: 80vh;
        width: 98%;
        overflow: auto;
        /* or scroll */
    }

a {
    color: #0f0;
}

.menu-bar {
    background-color: #000;
    padding: 5px;
    overflow-x: auto;
}

.foot-bar {
    background-color: #000;
    color: #0f0;
    padding: 5px;
    overflow-x: auto;
}

.menu-item {
    display: inline-block;
    padding: 5px 10px;
    margin: 0 5px;
    background-color: #0f0;
    color: #000;
    text-decoration: none;
    font-weight: bold;
    border: 1px solid #0f0;
    cursor: pointer;
    transition: all 0.2s;
}

.menu-item:hover {
    background-color: #0a0;
    color: #fff;
}

.menu-item:active {
    background-color: #080;
    color: #fff;
    transform: scale(0.98);
}

#cmd_line_area {
    background-color: #000;
    color: #0f0;
    border: 1px solid #0f0;
    width: 100%;
    height: 50px;
    resize: none;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    padding: 5px;
    margin-bottom: 5px;
    overflow: hidden;
}

#sys_msg {
    background-color: #000;
    color: #f00;
    border: 1px solid #f00;
    padding: 10px;
    margin-bottom: 5px;
    min-height: 20px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    overflow: hidden;
    width: calc( 100% - 20px);
}

#main_area {
    background-color: #000;
    color: #0f0;
    border: 1px solid #0f0;
    width: calc( 100% - 20px);
    padding: 10px;
    resize: none;
    font-family: 'Courier New';
    font-size: 14px;
    overflow-y: auto;
}

/* Cursor blink effect */
#cmd_line_area::after {
    content: "▓";
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #0f0;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

/* Scrollbar styling */
#main_area::-webkit-scrollbar {
    width: 5px;
}
#main_area::-webkit-scrollbar-track {
    background: #000;
}
#main_area::-webkit-scrollbar-thumb {
    background: #0f0;
    border-radius: 5px;
}
#main_area::-webkit-scrollbar-thumb:hover {
    background: #0a0;
}