:root {
    --bg-color: #0a0a0a;
    --term-bg: #1a1a1a;
    --text-color: #00ff00;
    --dim-text: #008f00;
    --accent: #00ff00;
    --font-stack: 'Courier New', Courier, monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-stack);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Vintage Monitor Background Icon Effect */
body::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background-image: url('../images/monitor_icon.png'); /* Placeholder for vintage monitor icon */
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    opacity: 0.05;
    z-index: -1;
    pointer-events: none;
}

.scanline {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0),
        rgba(255, 255, 255, 0) 50%,
        rgba(0, 0, 0, 0.2) 50%,
        rgba(0, 0, 0, 0.2)
    );
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 10;
}

.container {
    width: 800px;
    max-width: 95%;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 0 0 10px var(--accent);
}

h1 {
    font-size: 2rem;
    margin-bottom: 5px;
    letter-spacing: 2px;
}

.terminal-window {
    background-color: var(--term-bg);
    border: 2px solid var(--accent);
    border-radius: 5px;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.2);
    overflow: hidden;
}

.terminal-header {
    background-color: #333;
    padding: 5px 10px;
    display: flex;
    align-items: center;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 6px;
}

.red { background-color: #ff5f56; }
.yellow { background-color: #ffbd2e; }
.green { background-color: #27c93f; }

.title {
    margin-left: 10px;
    color: #ccc;
    font-size: 0.8rem;
}

.terminal-body {
    padding: 20px;
    height: 300px;
    overflow-y: auto;
    font-size: 0.9rem;
    color: var(--text-color);
}

.system-msg {
    margin-bottom: 5px;
}

.input-area {
    display: flex;
    padding: 10px;
    border-top: 1px solid var(--dim-text);
    background-color: #111;
    align-items: center;
}

.prompt {
    color: var(--accent);
    margin-right: 10px;
    white-space: nowrap;
}

input[type="text"] {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-family: var(--font-stack);
    font-size: 1rem;
    flex-grow: 1;
    outline: none;
}

button#ping-btn {
    background-color: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 5px 15px;
    font-family: var(--font-stack);
    font-weight: bold;
    cursor: pointer;
    text-shadow: 0 0 5px var(--accent);
    box-shadow: 0 0 5px var(--accent);
    transition: all 0.3s ease;
}

button#ping-btn:hover {
    background-color: var(--accent);
    color: var(--bg-color);
}

/* Scrollbar styling */
.terminal-body::-webkit-scrollbar {
    width: 8px;
}
.terminal-body::-webkit-scrollbar-track {
    background: var(--term-bg);
}
.terminal-body::-webkit-scrollbar-thumb {
    background: var(--dim-text);
}

footer {
    margin-top: 20px;
    text-align: center;
    font-size: 0.7rem;
    color: var(--dim-text);
}

/* Responsive images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}