/* ==========================================================================
   Wim OS — window chrome
   Frames, title bars, menu bars, status bars, tabs, dialogs.
   ========================================================================== */

.window-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.retro-window {
    position: absolute;
    display: flex;
    flex-direction: column;
    min-width: 220px;
    min-height: 120px;
    max-width: calc(100vw - 8px);
    max-height: calc(100dvh - var(--taskbar-height) - 8px);
    padding: 3px;
    background: var(--win-face);
    border-top: 2px solid var(--win-light);
    border-left: 2px solid var(--win-light);
    border-right: 2px solid var(--win-shadow);
    border-bottom: 2px solid var(--win-shadow);
    box-shadow: 1px 1px 0 0 var(--win-dark-shadow);
    pointer-events: auto;
}

.retro-window[hidden] {
    display: none !important;
}

.retro-window.is-opening {
    animation: window-open 100ms linear;
}

@keyframes window-open {
    from { transform: scale(0.94); opacity: 0.6; }
    to   { transform: scale(1); opacity: 1; }
}

.retro-window.is-maximized {
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: calc(100dvh - var(--taskbar-height)) !important;
    max-width: none;
    max-height: none;
}

.retro-window.is-dragging {
    user-select: none;
}

/* --- Title bar ---------------------------------------------------------- */

.window-titlebar {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: none;
    height: var(--titlebar-height);
    padding: 0 2px 0 3px;
    background: linear-gradient(to right, var(--title-inactive-start), var(--title-inactive-end));
    color: var(--title-text-inactive);
    cursor: default;
    touch-action: none;
}

.retro-window.is-active .window-titlebar {
    background: linear-gradient(to right, var(--title-active-start), var(--title-active-end));
    color: var(--title-text);
}

.window-titlebar .icon-glyph {
    width: 16px;
    height: 16px;
    flex: none;
}

.window-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
    font-weight: bold;
}

.window-controls {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: none;
}

.window-controls .window-control:last-child {
    margin-left: 2px;
}

.window-control {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 17px;
    height: 15px;
    min-width: 0;
    min-height: 0;
    padding: 0;
    background: var(--win-face);
    color: var(--text);
    cursor: pointer;
    border-top: 1px solid var(--win-light);
    border-left: 1px solid var(--win-light);
    border-right: 1px solid var(--win-dark-shadow);
    border-bottom: 1px solid var(--win-dark-shadow);
    box-shadow: inset -1px -1px 0 var(--win-shadow), inset 1px 1px 0 var(--win-highlight);
}

.window-control:active {
    border-top-color: var(--win-dark-shadow);
    border-left-color: var(--win-dark-shadow);
    border-right-color: var(--win-light);
    border-bottom-color: var(--win-light);
    box-shadow: inset 1px 1px 0 var(--win-shadow);
}

.window-control:focus-visible {
    outline: 1px dotted var(--text);
    outline-offset: -3px;
}

.window-control svg {
    width: 9px;
    height: 9px;
    fill: currentColor;
    pointer-events: none;
}

/* --- Menu bar ----------------------------------------------------------- */

.window-menu {
    display: flex;
    flex: none;
    gap: 2px;
    padding: 1px 0 2px;
    border-bottom: 1px solid var(--win-shadow);
    box-shadow: 0 1px 0 var(--win-light);
    margin-bottom: 2px;
}

.window-menu button {
    min-width: 0;
    min-height: 0;
    padding: 2px 7px;
    background: none;
    border: 0;
    font-size: 12px;
    cursor: pointer;
}

.window-menu button:hover,
.window-menu button:focus-visible {
    background: var(--selection);
    color: var(--selection-text);
    outline: none;
}

/* --- Toolbar ------------------------------------------------------------ */

.window-toolbar {
    display: flex;
    align-items: center;
    gap: 3px;
    flex: none;
    padding: 3px 2px;
    border-bottom: 1px solid var(--win-shadow);
    box-shadow: 0 1px 0 var(--win-light);
    margin-bottom: 3px;
}

.toolbar-button {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-width: 0;
    min-height: 24px;
    padding: 2px 7px;
    background: var(--win-face);
    border: 2px solid transparent;
    font-size: 12px;
    cursor: pointer;
}

.toolbar-button .icon-glyph {
    width: 18px;
    height: 18px;
}

.toolbar-button:hover:not(:disabled) {
    border-top-color: var(--win-light);
    border-left-color: var(--win-light);
    border-right-color: var(--win-shadow);
    border-bottom-color: var(--win-shadow);
}

.toolbar-button:active:not(:disabled) {
    border-top-color: var(--win-shadow);
    border-left-color: var(--win-shadow);
    border-right-color: var(--win-light);
    border-bottom-color: var(--win-light);
}

.toolbar-button:disabled {
    color: var(--text-disabled);
    text-shadow: 1px 1px 0 var(--text-disabled-light);
    cursor: default;
}

.toolbar-button:disabled .icon-glyph {
    opacity: 0.4;
}

/* --- Content ------------------------------------------------------------ */

.window-content {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    padding: 10px 12px;
    background: var(--win-face);
}

.window-content.is-flush {
    padding: 0;
}

/* --- Status bar --------------------------------------------------------- */

.window-statusbar {
    display: flex;
    gap: 3px;
    flex: none;
    margin-top: 3px;
}

.window-statusbar span {
    padding: 2px 6px;
    font-size: 11px;
    border-top: 1px solid var(--win-shadow);
    border-left: 1px solid var(--win-shadow);
    border-right: 1px solid var(--win-light);
    border-bottom: 1px solid var(--win-light);
}

.window-statusbar span:first-child {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --- Resize grip -------------------------------------------------------- */

.window-resize {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 16px;
    height: 16px;
    cursor: nwse-resize;
    touch-action: none;
    background:
        linear-gradient(135deg, transparent 0 45%, var(--win-shadow) 45% 52%, transparent 52%),
        linear-gradient(135deg, transparent 0 65%, var(--win-shadow) 65% 72%, transparent 72%),
        linear-gradient(135deg, transparent 0 85%, var(--win-shadow) 85% 92%, transparent 92%);
}

.retro-window.is-maximized .window-resize {
    display: none;
}

/* --- Tabs (property sheets) --------------------------------------------- */

.tabs {
    display: flex;
    gap: 2px;
    padding: 0 2px;
    margin-bottom: -2px;
    position: relative;
    z-index: 1;
}

.tab {
    min-width: 0;
    min-height: 0;
    padding: 4px 12px 5px;
    background: var(--win-face);
    color: var(--text);
    font-size: 12px;
    cursor: pointer;
    border-top: 2px solid var(--win-light);
    border-left: 2px solid var(--win-light);
    border-right: 2px solid var(--win-shadow);
    border-bottom: 2px solid var(--win-shadow);
    border-radius: 2px 2px 0 0;
}

.tab[aria-selected="true"] {
    padding: 3px 13px 7px;
    margin-top: -2px;
    border-bottom-color: var(--win-face);
    font-weight: bold;
}

.tab:focus-visible {
    outline: 1px dotted var(--text);
    outline-offset: -4px;
}

.tab-panels {
    padding: 12px;
    border-top: 2px solid var(--win-light);
    border-left: 2px solid var(--win-light);
    border-right: 2px solid var(--win-shadow);
    border-bottom: 2px solid var(--win-shadow);
    background: var(--win-face);
}

/* --- Dialogs ------------------------------------------------------------ */

.dialog-layer {
    position: fixed;
    inset: 0 0 var(--taskbar-height) 0;
    z-index: 4500;
    pointer-events: none;
}

.retro-dialog {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(360px, calc(100vw - 24px));
    padding: 3px;
    background: var(--win-face);
    border-top: 2px solid var(--win-light);
    border-left: 2px solid var(--win-light);
    border-right: 2px solid var(--win-shadow);
    border-bottom: 2px solid var(--win-shadow);
    box-shadow: 1px 1px 0 0 var(--win-dark-shadow);
    pointer-events: auto;
}

.retro-dialog .window-titlebar {
    background: linear-gradient(to right, var(--title-active-start), var(--title-active-end));
    color: var(--title-text);
}

.dialog-body {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 16px 10px;
}

.dialog-body .icon-glyph {
    width: 32px;
    height: 32px;
    flex: none;
}

.dialog-text {
    flex: 1;
    min-width: 0;
}

.dialog-text h3 {
    margin-bottom: 6px;
    font-size: 13px;
}

.dialog-text p {
    margin: 0 0 4px;
}

.dialog-text .dialog-mono {
    font-family: var(--font-mono);
    font-size: 12px;
}

.dialog-actions {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px 16px;
}

.dialog-choices {
    margin: 8px 0 0;
}