/* --- Global Variables & Reset --- */
:root {
    --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --background-dark: #1e1e1e;
    --background-light: #2d2d2d;
    --accent-color: #0078d4;
    --text-color: #f0f0f0;
    --glass-bg: rgba(40, 40, 40, 0.6);
    --border-color: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: var(--font-family);
    background-color: #000; /* Initial "off" state */
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background-size: cover;
    background-position: center;
    transition: background-image 0.5s ease-in-out;
    color: var(--text-color);
}

/* Styles for the body AFTER login */
body.loggedin {
    display: block;
    justify-content: normal;
    align-items: normal;
}

/* --- Initial State & Boot Sequence --- */

/* Everything is hidden by default except the power button */
.boot,
.welcome,
.login-screen,
.desktop,
.taskbar,
.window,
.start-menu,
.context-menu {
    display: none;
}

.power {
    padding: 20px 40px;
    font-size: 2rem;
    cursor: pointer;
    border: 2px solid #fff;
    background-color: #111;
    color: #fff;
}

/* --- Login Screen --- */
.login-screen {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 3rem;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.login-avatar img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.login-user {
    font-size: 1.5rem;
    font-weight: 400;
}

.login-prompt {
    font-size: 0.9rem;
    color: #aaa;
}

.password-container {
    display: flex;
    margin-top: 1rem;
}

.password-box {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.3);
    color: var(--text-color);
    border-radius: 8px 0 0 8px;
    width: 220px;
}

.login-btn {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border: 1px solid var(--border-color);
    border-left: none;
    background: var(--accent-color);
    color: white;
    border-radius: 0 8px 8px 0;
    font-size: 1.2rem;
}

/* --- Desktop Environment --- */
.desktop {
    width: 100%;
    height: 100%;
    background: transparent; /* Wallpaper is on the body */
    padding: 20px;
    position: relative;
}

.desktop-icons {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    gap: 20px;
    height: 100%;
    align-content: flex-start;
}

.desktop-icon {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    text-align: center;
    width: 80px;
    transition: transform 0.1s ease-in-out;
    font-size: 14px;
    text-shadow: 1px 1px 2px black;
}

.desktop-icon p {
    font-size: 40px; /* Emoji size */
}
.desktop-icon:hover {
    transform: scale(1.1);
}

.desktop-icon.selected {
    background-color: rgba(0, 120, 212, 0.4);
    border: 1px solid rgba(0, 120, 212, 0.6);
    border-radius: 4px;
}


/* --- Taskbar --- */
.taskbar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    align-items: center;
    padding: 0 5px;
    color: var(--text-color);
}

.start-button {
    background: transparent;
    border: none;
    padding: 2px 10px;
    cursor: pointer;
    font-size: 24px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.taskbar-app {
    background-color: transparent;
    border: none;
    color: var(--text-color);
    padding: 0 15px;
    height: 90%;
    margin: 0 2px;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    border-radius: 4px;
}

.taskbar-app:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.taskbar-app.active {
    background-color: rgba(255, 255, 255, 0.2);
    border-bottom-color: var(--accent-color);
}

.running-apps {
    flex-grow: 1;
    height: 100%;
}

.system-tray {
    padding: 0 10px;
    display: flex;
    align-items: center;
}

/* --- Start Menu --- */
.start-menu {
    position: fixed;
    bottom: 40px; /* Height of the taskbar */
    left: 5px;
    width: 250px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    z-index: 200; /* On top of everything */
    flex-direction: column;
    border-radius: 8px;
}

.start-menu-search {
    width: calc(100% - 16px);
    margin: 8px;
    padding: 8px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
}

.start-menu-search:focus {
    outline: 1px solid var(--accent-color);
}

.start-menu.visible {
    display: flex; /* This class will be toggled by JS */
    animation: fadeInMenu 0.15s ease-out;
}

.start-menu-apps {
    list-style: none;
    padding: 5px;
}

.start-menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    cursor: pointer;
    color: var(--text-color);
    border-radius: 4px;
    transition: background-color 0.2s;
}

.start-menu-item:hover {
    background-color: var(--accent-color);
}

.start-menu-footer {
    border-top: 1px solid var(--border-color);
    padding: 8px;
}

#shutdown-btn { padding: 8px; width: 100%; cursor: pointer; }

/* --- Context Menu --- */
.context-menu {
    position: absolute;
    z-index: 300;
    width: 180px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 5px;
    animation: fadeInMenu 0.15s ease-out;
}

.context-menu ul {
    list-style: none;
}

.context-menu li {
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.context-menu li:hover {
    background-color: var(--accent-color);
}


/* --- Window Styles --- */
.window {
    position: absolute;
    top: 100px;
    left: 150px;
    width: 600px;
    height: 400px;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    flex-direction: column;
    border-radius: 8px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    overflow: hidden; /* To contain the rounded corners */
}

.window.opening {
    /* This class is added by JS for the open animation */
    animation: fadeInWindow 0.2s ease-out;
}

.title-bar {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 5px;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: move; /* For dragging */
}

.window-controls {
    display: flex;
}

.window-controls button {
    width: 20px;
    height: 20px;
    margin-left: 3px;
    background-color: transparent;
    border: none;
    color: var(--text-color);
    font-weight: bold;
    cursor: pointer;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.window-controls button:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.window-body {
    flex-grow: 1;
    padding: 15px;
    color: var(--text-color);
    overflow-y: auto;
    background-color: var(--background-light);
}

/* --- Browser-specific Styles --- */
.nav-bar {
    padding: 5px;
    background-color: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-color);
}

.nav-form {
    display: flex;
}

.address-bar {
    flex-grow: 1;
    padding: 5px 10px;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.3);
    color: var(--text-color);
    border-radius: 4px 0 0 4px;
}

.go-btn {
    padding: 5px 15px;
    cursor: pointer;
    border: 1px solid var(--border-color);
    border-left: none;
    background: var(--accent-color);
    color: white;
    border-radius: 0 4px 4px 0;
}

#browser-body {
    padding: 0;
}

.browser-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background-color: #fff; /* Show a white background while loading */
}

/* --- App-specific Window Body Styles --- */
#this-pc-body h3 {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 400;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}

.wallpaper-selection {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.wallpaper-thumbnail {
    width: 100px;
    height: 60px;
    object-fit: cover;
    border-radius: 4px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: border-color 0.2s;
}

.wallpaper-thumbnail:hover {
    border-color: var(--accent-color);
}

.section-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 1rem 0;
}

.file-explorer {
    list-style: none;
    font-family: 'Consolas', 'Courier New', monospace;
}

.file-explorer li {
    padding: 5px;
    border-radius: 4px;
    cursor: pointer;
}

.file-explorer li:not(.file-locked):hover {
    background-color: var(--accent-color);
}

.file-locked {
    color: #ff8a8a;
    cursor: not-allowed;
}

#specs-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.specs-list {
    list-style: none;
    line-height: 1.8;
    font-size: 1rem;
}

#settings-body h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-weight: 400;
}

.settings-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.color-swatch {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    transition: border-color 0.2s;
}

.color-swatch.active {
    border-color: var(--text-color);
}

#devspace-body {
    padding: 0;
    background-color: #1e1e1e; /* VS Code-like dark background */
}

.code-editor {
    width: 100%;
    height: 100%;
    background: none;
    border: none;
    resize: none;
    color: #d4d4d4;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 14px;
    padding: 10px;
    line-height: 1.5;
}

#calculator-body {
    padding: 0;
    display: flex;
    flex-direction: column;
}

.calc-display {
    background-color: transparent;
    color: var(--text-color);
    font-size: 2.5rem;
    text-align: right;
    padding: 20px;
    flex-grow: 1;
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
}

.calc-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background-color: var(--border-color);
}

.calc-btn {
    background-color: var(--background-light);
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    padding: 20px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.calc-btn:hover {
    background-color: #444;
}

.calc-btn.function {
    background-color: #3a3a3a;
}

.calc-btn.function:hover {
    background-color: #555;
}

.calc-btn.operator {
    background-color: var(--accent-color);
}

.calc-btn.operator:hover {
    filter: brightness(1.2);
}

.calc-btn.zero {
    grid-column: span 2;
}

#games-body {
    background-color: var(--background-dark);
    display: flex;
    align-items: flex-start;
}

.games-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding: 10px;
}

.game-icon {
    width: 100px;
    padding: 10px;
    text-align: center;
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.2s;
}

.game-icon:hover {
    background-color: var(--accent-color);
}

.game-icon p {
    font-size: 48px;
    margin-bottom: 5px;
}

#terminal-body {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background-color: var(--background-dark);
}

#terminal-output {
    background-color: transparent;
    color: #0f0;
    font-family: 'Courier New', Courier, monospace;
    flex-grow: 1; /* Take up all available space */
    padding: 5px;
    white-space: pre-wrap; /* Allows text to wrap */
    overflow-y: auto; /* Allow scrolling for output */
}

.terminal-prompt-line {
    display: flex;
    align-items: center;
    background-color: transparent;
    color: #0f0;
    font-family: 'Courier New', Courier, monospace;
    padding: 0 5px 5px 5px;
}

.terminal-prompt-line span {
    margin-right: 5px;
}

.terminal-input {
    flex-grow: 1;
    background: none;
    border: none;
    color: #0f0;
    font-family: inherit;
    font-size: 1em;
}

.terminal-input:focus {
    outline: none;
}

/* --- Accessibility Helper --- */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* --- Animations --- */
@keyframes fadeInWindow {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes fadeInMenu {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--background-dark);
}
::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #777;
}