:root {
    --win-bg: #c0c0c0;
    --win-text: #000000;
    --win-gray-light: #dfdfdf;
    --win-gray-dark: #808080;
    --win-blue: #000080;
    --win-white: #ffffff;
}

body {
    background-color: var(--win-bg); /* Match window background */
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

/* Windows 3.1 / 95 Style Window */
.window {
    background-color: var(--win-bg);
    border: none; /* Remove outer borders for full screen */
    box-shadow: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
}

.title-bar {
    background: var(--win-blue);
    padding: 3px 2px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--win-white);
    font-weight: bold;
    font-family: sans-serif;
    letter-spacing: 0.5px;
}

.title-bar-text {
    margin-left: 4px;
}

.window-body {
    flex: 1;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Inset Border (Sunken look) */
.inset-border {
    border: 2px solid var(--win-gray-dark);
    border-right-color: var(--win-white);
    border-bottom-color: var(--win-white);
    background: var(--win-white); /* Canvas background */
}

#main-layout {
    display: flex;
    gap: 10px;
    flex: 1;
    min-height: 0; /* Fix flex overflow */
}

#viewport-container {
    flex: 1;
    background: #000; /* Game background */
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    border: none; /* Remove border for cleaner look */
}

#game-canvas {
    image-rendering: pixelated;
    width: 100%;
    height: 100%;
}

#sidebar {
    width: 200px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Group Box */
.group-box {
    border: 2px solid var(--win-gray-light);
    border-top-color: var(--win-white);
    border-left-color: var(--win-white);
    border-right-color: var(--win-gray-dark);
    border-bottom-color: var(--win-gray-dark);
    padding: 10px;
    position: relative;
    margin-top: 10px;
}

.group-box-label {
    position: absolute;
    top: -10px;
    left: 10px;
    background: var(--win-bg);
    padding: 0 5px;
}

#message-log {
    height: 120px;
    padding: 10px;
    overflow-y: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 15px;
    background: #000;
    color: #00ff00; /* Matrix/Classic terminal style */
    border: 2px solid var(--win-gray-dark);
}

.status-bar {
    border-top: 1px solid var(--win-gray-dark);
    padding: 2px 5px;
    font-size: 12px;
}