/* === Windows 2000 Desktop Environment Style (Final Version) === */

:root {
    --bg-color: #008080;
    --surface-color: #c0c0c0;
    --button-text: #000000;
    --header-blue: #000080;
    --header-inactive-blue: #808080;
    --header-text: #ffffff;
    --border-light: #dfdfdf;
    --border-lighter: #ffffff;
    --border-dark: #808080;
    --border-darker: #000000;
    --main-font: 'VT323', monospace;
}

/* --- General Setup --- */
* {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    user-select: none;
}

body, html {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: var(--main-font);
    font-size: 18px;
}

#desktop {
    background-color: var(--bg-color);
    height: 100%;
    width: 100%;
    padding-bottom: 32px;
    position: relative;
    overflow: hidden;
}

/* UPDATED: Hide only UI content, not the desktop background, to prevent white flash */
#desktop-icons, #window-container, #taskbar {
    opacity: 0;
    transition: opacity 0.2s ease-in;
}

/* This class will be added by JS after all assets are loaded */
body.is-loaded #desktop-icons,
body.is-loaded #window-container,
body.is-loaded #taskbar {
    opacity: 1;
}

/* --- Desktop Icons --- */
#desktop-icons {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.desktop-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 80px;
    cursor: pointer;
}

.desktop-icon img {
    width: 48px;
    height: 48px;
}

.desktop-icon span {
    color: white;
    text-align: center;
    margin-top: 5px;
    padding: 2px;
    border: 1px solid transparent;
}

.desktop-icon .icon-title.selected {
    background-color: var(--header-blue);
    border: 1px dotted var(--border-light);
}

/* --- Window Styles --- */
.window {
    position: absolute;
    background-color: var(--surface-color);
    border: 1px solid;
    border-color: var(--border-light) var(--border-darker) var(--border-darker) var(--border-light);
    box-shadow: 1px 1px 0 0 var(--border-lighter);
    padding: 2px;
    min-width: 500px;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: scale(0.8);
    transition: transform 0.2s ease-out, opacity 0.2s ease-out, top 0.2s ease-out, left 0.2s ease-out, width 0.2s ease-out, height 0.2s ease-out;
    overflow: hidden;
}

.window.is-dragging-or-resizing {
    transition: none;
}

.window.open {
    opacity: 1;
    transform: scale(1);
}

.window.minimized {
    opacity: 0;
    transform: scale(0) translateY(200px);
    pointer-events: none;
}

.window.maximized {
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: calc(100vh - 32px) !important;
    resize: none;
}


.window-title-bar {
    background: var(--header-blue);
    color: var(--header-text);
    padding: 3px 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: grab;
    flex-shrink: 0;
}

.window:not(.active) .window-title-bar {
    background: var(--header-inactive-blue);
}

.window-title-bar:active {
    cursor: grabbing;
}

.window-title {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: normal;
}

.window-title img {
    width: 16px;
    height: 16px;
}

.window-controls {
    display: flex;
    gap: 2px;
}

.window-control {
    width: 22px;
    height: 20px;
    background-color: var(--surface-color);
    border: 1px solid;
    border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
    box-shadow: 1px 1px 0px 0px var(--border-lighter);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    font-family: var(--main-font);
    font-size: 16px;
}
.window-control:active {
    border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
    transform: translate(1px, 1px);
    box-shadow: none;
}
.window-control.close-btn {
    font-family: 'Arial Black', sans-serif;
    color: var(--button-text);
}


.window-content {
    flex-grow: 1;
    background-color: white;
    margin: 3px;
    border: 1px solid;
    border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
    padding: 1rem;
    color: black;
    overflow: auto;
    overflow-wrap: break-word;
}

/* --- Resizer Handles --- */
.resizer {
    position: absolute;
    z-index: 10;
}
.resizer.right {
    top: 0;
    right: 0;
    width: 5px;
    height: 100%;
    cursor: ew-resize;
}
.resizer.bottom {
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    cursor: ns-resize;
}
.resizer.left {
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    cursor: ew-resize;
}
.resizer.bottom-right {
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    cursor: nwse-resize;
    z-index: 11;
}


/* --- Taskbar --- */
#taskbar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 32px;
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    padding: 2px;
    z-index: 10000;
}

#start-button {
    background-color: var(--surface-color);
    border: 1px solid;
    border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
    box-shadow: 1px 1px 0px 0px var(--border-lighter);
    display: flex;
    align-items: center;
    padding: 2px 5px;
    font-weight: normal;
    cursor: pointer;
    font-family: var(--main-font);
    font-size: 16px;
}
#start-button:active {
    border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
}
#start-button img { width: 20px; height: 20px; margin-right: 5px; }

#taskbar-divider {
    height: 28px;
    width: 2px;
    background-color: var(--surface-color);
    border-left: 1px solid var(--border-dark);
    border-right: 1px solid var(--border-light);
    margin: 0 4px;
}

#taskbar-apps {
    display: flex;
    flex-grow: 1;
    gap: 4px;
    height: 100%;
}

.taskbar-app {
    flex-basis: 160px;
    padding: 2px 5px;
    border: 1px solid;
    border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
    display: flex;
    align-items: center;
    gap: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    background: var(--surface-color);
    cursor: pointer;
    font-family: var(--main-font);
    font-size: 16px;
}
.taskbar-app.active {
    border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
    background-color: #a0a0a0;
}
.taskbar-app img { width: 16px; height: 16px; }

#taskbar-tray {
    height: 28px;
    min-width: 80px;
    border: 1px solid;
    border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
    margin-left: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 10px;
    font-family: var(--main-font);
    font-size: 16px;
}

/* Specific content styling inside windows */
.window-content h1, .window-content h2, .window-content h3 {
    color: var(--header-blue);
}
.window-content a {
    color: #0000FF;
}
.window-content .btn {
    background: var(--surface-color);
    color: var(--button-text);
    padding: 8px 20px;
    text-decoration: none;
    margin-top: 1rem;
    border: 1px solid;
    border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
    box-shadow: 1px 1px 0px 0px var(--border-darker);
}
.window-content .btn:active {
    border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
    box-shadow: none;
    transform: translate(1px, 1px);
}