/* ===== WINDOWS 11 UI - MAIN CSS ===== */
/* Modern CSS architecture with modular imports */

/* 1. CSS Variables & Theming */
@import url('./variables.css');

/* 2. Reset & Base Styles */
@import url('./reset.css');

/* 3. Theme System */
@import url('./themes.css');

/* 4. Utilities */
@import url('./utilities.css');

/* 5. Animations */
@import url('./animations.css');

/* 6. Layout Components */
@import url('./desktop.css');
@import url('./taskbar.css');
@import url('./start-menu.css');
@import url('./windows.css');

/* 7. Feature Panels */
@import url('./widgets.css');
@import url('./notifications.css');

/* 8. Responsive Design */
@import url('./responsive.css');

/* ===== CONTEXT MENU ===== */

.context-menu {
    position: fixed;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs);
    box-shadow: var(--shadow-xl);
    min-width: 240px;
    z-index: var(--z-context-menu);
    display: none;
}

.context-menu.active {
    display: block;
    animation: contextMenuOpen var(--transition-fast) var(--transition-ease);
}

.context-menu__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color var(--transition-fast) var(--transition-ease);
    user-select: none;
}

.context-menu__item:hover {
    background-color: var(--hover-bg);
}

.context-menu__item:active {
    background-color: var(--active-bg);
}

.context-menu__item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.context-menu__item.disabled:hover {
    background-color: transparent;
}

.context-menu__item-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.context-menu__item-icon svg {
    width: 100%;
    height: 100%;
    fill: var(--text-primary);
}

.context-menu__item-text {
    flex: 1;
}

.context-menu__item-shortcut {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.context-menu__item-arrow {
    width: 12px;
    height: 12px;
    fill: var(--text-primary);
}

.context-menu__separator {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-xs) 0;
}

.context-menu__submenu {
    position: absolute;
    left: calc(100% + 4px);
    top: -4px;
}

/* ===== LOADING OVERLAY ===== */

.loading-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    z-index: 99999;
    opacity: 1;
    transition: opacity var(--transition-slow) var(--transition-ease);
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-overlay__spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spinner 0.8s linear infinite;
}

.loading-overlay__text {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

/* ===== BACKDROP BLUR SUPPORT CHECK ===== */

@supports not (backdrop-filter: blur(10px)) {
    .taskbar,
    .start-menu,
    .widgets-panel,
    .notification-center {
        background: var(--bg-secondary);
    }
}

/* ===== CUSTOM CURSOR (OPTIONAL) ===== */

.cursor-grab {
    cursor: grab;
}

.cursor-grabbing {
    cursor: grabbing;
}

.cursor-resize-ns {
    cursor: ns-resize;
}

.cursor-resize-ew {
    cursor: ew-resize;
}

.cursor-resize-nwse {
    cursor: nwse-resize;
}

.cursor-resize-nesw {
    cursor: nesw-resize;
}

/* ===== SELECTION STYLES ===== */

.no-select,
.desktop-icon,
.taskbar__icon,
.start-menu__app,
.window__header {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* ===== DRAGGING STATES ===== */

.dragging {
    opacity: 0.6;
    pointer-events: none;
}

.drag-over {
    background-color: rgba(0, 120, 212, 0.1);
    border: 2px dashed var(--accent-primary);
}

/* ===== FOCUS TRAP (FOR MODALS) ===== */

.focus-trap {
    position: fixed;
    inset: 0;
    z-index: 9998;
}

/* ===== SCREEN READER ONLY ===== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ===== SKIP TO CONTENT ===== */

.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100000;
    text-decoration: none;
    border-radius: var(--radius-md);
}

.skip-to-content:focus {
    top: var(--spacing-sm);
}

/* ===== PERFORMANCE HINTS ===== */

.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

.gpu-accelerate {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* ===== TOOLTIP ===== */

.tooltip {
    position: absolute;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    z-index: var(--z-tooltip);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast) var(--transition-ease);
}

.tooltip.active {
    opacity: 1;
}

.tooltip::before {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transform: rotate(45deg);
}

.tooltip--top::before {
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    border-top: none;
    border-left: none;
}

.tooltip--bottom::before {
    top: -5px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    border-bottom: none;
    border-right: none;
}

.tooltip--left::before {
    right: -5px;
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    border-top: none;
    border-right: none;
}

.tooltip--right::before {
    left: -5px;
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    border-bottom: none;
    border-left: none;
}

/* ===== BADGE ===== */

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 var(--spacing-xs);
    background: var(--accent-red);
    color: white;
    font-size: 11px;
    font-weight: var(--font-weight-bold);
    border-radius: 10px;
}

.badge--primary {
    background: var(--accent-primary);
}

.badge--success {
    background: var(--accent-green);
}

.badge--warning {
    background: var(--accent-orange);
}

.badge--dot {
    width: 8px;
    height: 8px;
    min-width: 8px;
    padding: 0;
}

/* ===== DIVIDER ===== */

.divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-md) 0;
}

.divider--vertical {
    width: 1px;
    height: auto;
    margin: 0 var(--spacing-md);
}

/* ===== ELEVATION LEVELS ===== */

.elevation-0 {
    box-shadow: none;
}

.elevation-1 {
    box-shadow: var(--shadow-sm);
}

.elevation-2 {
    box-shadow: var(--shadow-md);
}

.elevation-3 {
    box-shadow: var(--shadow-lg);
}

.elevation-4 {
    box-shadow: var(--shadow-xl);
}

.elevation-5 {
    box-shadow: var(--shadow-2xl);
}

/* ===== DEBUG MODE (OPTIONAL) ===== */

[data-debug="true"] * {
    outline: 1px solid red;
}

[data-debug="true"] *:hover {
    outline: 2px solid blue;
}