:root {
    /* VGA Color Palette */
    --vga-blue: #0000A8;
    --vga-grey: #A8A8A8;
    --vga-white: #FFFFFF;
    --vga-black: #000000;
    --vga-green: #00A800;
    --vga-red: #A80000;
    --vga-yellow: #FFFF55;
    --shadow-color: rgba(0,0,0,0.5);

    /* Layout Dimensions */
    --menu-height: 30px;
    --status-height: 30px;
    --window-default-width: 800px;
    --window-list-width: 600px;
    --window-default-top: 50px;
    --window-default-left: 50px;
    --window-cascade-offset: 25px;
    --window-min-width: 200px;
    --window-min-height: 100px;

    /* Spacing */
    --menu-padding: 2px 10px;
    --menu-item-padding: 0 12px;
    --window-border-width: 4px;
    --window-shadow-offset: 12px;
    --window-content-padding: 15px;
    --window-content-margin: 5px;

    /* Effects */
    --scanline-height: 2px;
    --rgb-separation: 3px;
}

* { box-sizing: border-box; }

body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: var(--vga-black);
    font-family: 'VT323', monospace;
    font-size: 20px;
    overflow: hidden;
}

/* The CRT Container */
#tui-screen {
    display: flex;
    flex-direction: column;
    height: 100vh;
    min-height: 100svh;
    background-color: var(--vga-blue);
    color: var(--vga-grey);
    background-image: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    background-size: 100% var(--scanline-height), var(--rgb-separation) 100%;
}

/* Menu Bar */
.menu-bar {
    display: flex;
    background-color: var(--vga-grey);
    color: var(--vga-black);
    padding: var(--menu-padding);
    height: var(--menu-height);
    align-items: center;
    position: relative;
    z-index: 1000;
}

.menu-item {
    padding: var(--menu-item-padding);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    height: 100%;
}

.menu-item:hover {
    background-color: var(--vga-black);
    color: var(--vga-white);
}

.menu-item:active {
    background-color: var(--vga-black);
    color: var(--vga-white);
}

.menu-item::first-letter { color: var(--vga-red); font-weight: bold; }

.menu-icon {
    font-weight: bold;
}

.menu-clock {
    margin-left: auto;
}

/* Workspace */
.workspace {
    flex-grow: 1;
    position: relative;
    background-image: radial-gradient(var(--vga-white) 1px, transparent 1px);
    background-size: 12px 12px;
    opacity: 0.9;
    overflow: hidden;
}

/* The Window (Content) */
.window {
    position: absolute;
    width: var(--window-default-width);
    max-width: 95%;
    background-color: var(--vga-grey);
    color: var(--vga-black);
    border: var(--window-border-width) double var(--vga-black);
    box-shadow: var(--window-shadow-offset) var(--window-shadow-offset) 0px var(--shadow-color);
    display: flex;
    flex-direction: column;
    top: var(--window-default-top);
    left: var(--window-default-left);
    max-height: 80vh;
}

.window-header {
    touch-action: none;
    background-color: var(--vga-blue);
    color: var(--vga-white);
    text-align: center;
    padding: 2px 5px;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    cursor: grab;
    user-select: none;
}

.window-header:active { cursor: grabbing; }

.close-btn {
    background: none;
    border: none;
    color: inherit;
    font: inherit;
    cursor: pointer;
    padding: 0;
}

.close-btn:hover {
    color: var(--vga-yellow);
}

.resize-handle {
    touch-action: none;
}

.window-content {
    padding: var(--window-content-padding);
    flex-grow: 1;
    background: var(--vga-blue);
    color: var(--vga-yellow);
    font-family: 'VT323', monospace;
    border: 1px solid var(--vga-black);
    margin: var(--window-content-margin);
    overflow-y: auto;
}

/* Hugo Content Styling inside Window */
.window-content a { color: var(--vga-green); }
.window-content h1, .window-content h2 { border-bottom: 1px double var(--vga-grey); margin-top: 0; }
.window-content pre { border: 1px dashed var(--vga-grey); padding: 10px; background: rgba(0,0,0,0.1); }
.window-content code { color: var(--vga-white); }

/* Directory Listing */
#list-window {
    width: var(--window-list-width);
}

.dir-listing {
    width: 100%;
    text-align: left;
    border-collapse: collapse;
}

.dir-filename {
    width: 50%;
}

.dir-type {
    width: 20%;
}

.dir-date {
    width: 30%;
}

/* Status Bar */
.status-bar {
    background-color: var(--vga-grey);
    color: var(--vga-black);
    padding: var(--menu-padding);
    display: flex;
    gap: 20px;
    height: var(--status-height);
    align-items: center;
    border-top: 2px solid var(--vga-black);
}

.status-title {
    margin-left: auto;
}

.status-btn {
    cursor: pointer;
    padding: 2px 8px;
    border: 1px solid transparent;
}

.status-btn:hover {
    background-color: var(--vga-black);
    color: var(--vga-white);
    border: 1px solid var(--vga-black);
}

.status-btn:active {
    background-color: var(--vga-blue);
    color: var(--vga-white);
}

/* Popup window styles */
.popup-window {
    max-height: 70vh;
}

.popup-window .window-content h2,
.popup-window .window-content h3 {
    color: var(--vga-white);
    margin-bottom: 8px;
}

.popup-window .window-content ul {
    list-style-type: none;
}

.popup-window .window-content li::before {
    content: "► ";
    color: var(--vga-grey);
}

/* Mobile adjustments */
@media (max-width: 768px) {
    body, html {
        font-size: 18px;
    }

    .window {
        width: 95vw;
        max-height: calc(100svh - var(--menu-height) - var(--status-height) - 20px);
    }

    .close-btn {
        padding: 0 6px;
    }

    .resize-handle {
        width: 28px;
        height: 28px;
        font-size: 18px;
    }
}