:root {
    --os-accent: var(--panel-accent, #3F8A4A);
    --os-accent-2: var(--panel-accent-2, #2B6B36);
    --os-accent-soft: var(--panel-select, #D8ECCB);
    --os-bg-0: var(--panel-0, #F5F0E4);
    --os-bg-1: var(--panel-1, #FBF6EB);
    --os-bg-2: var(--panel-2, #F0E9DA);
    --os-bg-3: var(--panel-3, #E3DAC7);
    --os-fg: var(--panel-text, #1F1B16);
    --os-fg-2: var(--panel-text-2, #5A5246);
    --os-fg-3: var(--panel-text-3, #857B6C);
    --os-red: var(--warn, #FF6B4A);
    --os-amber: var(--sun, #FFD86B);
    --os-green: var(--green, #3F8A4A);
    --os-radius: var(--r-2, 10px);
    --os-radius-sm: var(--r-1, 6px);
    --os-bar-h: 44px;
    --os-bar-h-mobile: 52px;
    --os-rail-w: 64px;
    --os-tap: 44px;
    --os-font: var(--ff-ui, 'Nunito', sans-serif);
    --os-display: var(--ff-display, 'Archivo Black', 'Archivo', sans-serif);
    --os-mono: var(--ff-mono, 'JetBrains Mono', ui-monospace, monospace);
}

html, body {
    background: var(--os-bg-0);
    color: var(--os-fg);
    font-family: var(--os-font);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.os-menubar, .os-taskbar {
    background: var(--os-bg-2);
    border: none;
    color: var(--os-fg);
    font: 13px var(--os-font);
    height: var(--os-bar-h);
    padding: 0 12px;
    gap: 6px;
    box-shadow: none;
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    min-width: 0;
}
.os-menubar > *, .os-taskbar > * { flex-shrink: 0; }
.os-menubar .os-spacer { flex: 1 1 auto; min-width: 0; }
.os-menubar .os-tray { margin-left: auto; }

.os-brand {
    color: var(--os-fg);
    font-family: var(--os-display);
    font-weight: 700;
    letter-spacing: -0.01em;
    font-size: 15px;
    margin-right: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-transform: lowercase;
}
.os-brand::before {
    content: '';
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--os-accent);
}

.os-btn {
    background: transparent;
    color: var(--os-fg-2);
    border: none;
    padding: 7px 14px;
    cursor: pointer;
    font: inherit;
    font-family: var(--os-font);
    font-size: 13px;
    border-radius: 999px;
    transition: background 80ms ease, color 80ms ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    outline: none;
    text-transform: lowercase;
}
.os-btn:hover { background: var(--panel-hover, var(--os-bg-2)); color: var(--os-fg); }
.os-btn.active, .os-btn[aria-pressed="true"] { background: var(--panel-select, var(--os-accent-soft)); color: var(--os-fg); }
.os-btn:focus-visible { background: var(--panel-hover, var(--os-bg-2)); }
.os-btn .ic { color: var(--os-accent); display: inline-flex; width: 16px; height: 16px; }
.os-btn .ic svg { width: 16px; height: 16px; display: block; fill: none; stroke: currentColor; }

.os-menu {
    position: absolute;
    background: var(--os-bg-1);
    border: none;
    border-radius: var(--r-3, 18px);
    padding: 8px;
    min-width: 220px;
    top: calc(var(--os-bar-h) + 4px);
    left: 8px;
    z-index: 9500;
    display: none;
    flex-direction: column;
    gap: 2px;
    pointer-events: auto;
}
.os-menu.open { display: flex; }
.os-menu .os-btn {
    width: 100%;
    text-align: left;
    border-radius: var(--os-radius-sm);
    padding: 8px 10px;
    color: var(--os-fg);
    justify-content: flex-start;
}
.os-menu .os-btn:hover { background: var(--panel-hover, var(--os-bg-2)); color: var(--os-fg); }

.os-clock {
    color: var(--os-fg-2);
    font-variant-numeric: tabular-nums;
    font-family: var(--os-mono);
    padding: 0 10px;
    font-size: 12px;
}

.os-task {
    border: none;
    background: var(--os-bg-1);
    color: var(--os-fg-2);
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 12px;
    font-family: var(--os-font);
    transition: background 80ms ease, color 80ms ease, box-shadow 80ms ease;
    max-width: 200px;
    cursor: pointer;
    outline: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-transform: lowercase;
}
.os-task:hover { background: var(--panel-hover, var(--os-bg-2)); color: var(--os-fg); }
.os-task.focused {
    background: var(--panel-select, var(--os-accent-soft));
    color: var(--os-fg);
    font-weight: 600;
    box-shadow: inset 4px 0 0 var(--os-accent);
}

.wm-win {
    background: var(--os-bg-1) !important;
    border: none !important;
    border-radius: var(--r-3, 18px) !important;
    box-shadow: none !important;
    overflow: hidden;
}
.wm-win.wm-focused {
    border: none !important;
    box-shadow: inset 4px 0 0 var(--os-accent) !important;
}

.wm-bar {
    background: var(--os-bg-2) !important;
    border: none !important;
    padding: 8px 12px !important;
    gap: 10px !important;
}
.wm-title {
    font: 13px var(--os-font) !important;
    color: var(--os-fg-2) !important;
    letter-spacing: 0.005em;
    text-align: center;
    font-weight: 600;
    text-transform: lowercase;
}
.wm-btns { gap: 6px !important; order: -1; }
.wm-btn {
    width: 22px !important;
    height: 22px !important;
    border-radius: var(--r-1, 6px) !important;
    border: none !important;
    background: var(--os-bg-3) !important;
    color: var(--os-fg-2) !important;
    padding: 0 !important;
    cursor: pointer;
    font: 600 12px var(--os-mono) !important;
    line-height: 1 !important;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    transition: background 100ms ease, color 100ms ease;
}
.wm-btn:hover { background: var(--panel-hover, var(--os-bg-2)) !important; color: var(--os-fg) !important; }

.wm-resize {
    background: transparent !important;
    width: 14px !important;
    height: 14px !important;
    color: var(--os-fg-3);
    opacity: 0.4;
    font: 10px var(--os-mono);
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    line-height: 1;
}
.wm-resize::after { content: '\25E2'; }
.wm-body { background: var(--os-bg-1) !important; }

.os-side-rail {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: var(--os-rail-w);
    background: var(--os-bg-2);
    border: none;
    display: none;
    flex-direction: column;
    align-items: center;
    padding: 12px 0;
    gap: 6px;
    z-index: 9100;
    pointer-events: auto;
}
.os-rail-btn {
    width: 48px; height: 48px;
    border-radius: var(--os-radius-sm);
    background: transparent;
    border: none;
    color: var(--os-fg);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 100ms ease;
    padding: 0;
    outline: none;
}
.os-rail-btn:hover { background: var(--panel-hover, var(--os-bg-1)); }
.os-rail-btn:active { background: var(--panel-select, var(--os-accent-soft)); }
.os-rail-btn .ic { color: var(--os-accent); display: inline-flex; }
.os-rail-btn .ic svg { width: 22px; height: 22px; fill: none; stroke: currentColor; }

.os-drawer {
    position: fixed;
    inset: 0;
    background: var(--os-bg-0);
    z-index: 9700;
    pointer-events: auto;
    display: none;
    flex-direction: column;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 180ms ease, transform 180ms ease;
    padding-top: env(safe-area-inset-top, 0);
    padding-bottom: env(safe-area-inset-bottom, 0);
}
.os-drawer.open { display: flex; opacity: 1; transform: translateY(0); }
.os-drawer-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 16px;
    border: none;
    height: 56px;
    box-sizing: border-box;
    background: var(--os-bg-2);
}
.os-drawer-title { color: var(--os-fg); font-family: var(--os-display); font-size: 22px; font-weight: 700; letter-spacing: -0.01em; text-transform: lowercase; }
.os-drawer-close {
    width: 44px; height: 44px;
    border: none; background: transparent;
    color: var(--os-fg-2);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--os-radius-sm);
    outline: none;
}
.os-drawer-close:hover { background: var(--panel-hover, var(--os-bg-2)); color: var(--os-fg); }
.os-drawer-close .ic svg { width: 22px; height: 22px; fill: none; stroke: currentColor; }
.os-drawer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 16px;
    overflow-y: auto;
    flex: 1;
    align-content: start;
}
.os-drawer-tile {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
    padding: 18px 8px;
    background: var(--os-bg-1);
    border: none;
    color: var(--os-fg);
    font: 13px var(--os-font);
    min-height: 100px;
    cursor: pointer;
    transition: background 80ms ease;
    outline: none;
    border-radius: var(--r-3, 18px);
    text-transform: lowercase;
}
.os-drawer-tile:hover { background: var(--panel-hover, var(--os-bg-2)); }
.os-drawer-tile:active, .os-drawer-tile.active { background: var(--panel-select, var(--os-accent-soft)); }
.os-drawer-tile .ic { color: var(--os-accent); display: inline-flex; }
.os-drawer-tile .ic svg { width: 32px; height: 32px; fill: none; stroke: currentColor; }
.os-drawer-tile .lbl { color: var(--os-fg); font-weight: 600; }

.os-spacer { flex: 1 1 auto; }
.os-tray { display: flex; align-items: center; gap: 6px; }
.os-instances { display: flex; gap: 6px; margin-left: 8px; }
.os-menubar [data-role="home"] { display: none; }
.os-root { position: fixed; inset: 0; display: flex; flex-direction: column; pointer-events: none; z-index: 8000; }
.os-menubar, .os-taskbar { pointer-events: auto; flex: 0 0 auto; }
.os-taskbar { margin-top: auto; }
.wm-root { top: var(--os-bar-h) !important; bottom: var(--os-bar-h) !important; inset: var(--os-bar-h) 0 var(--os-bar-h) 0 !important; }

.app-pane { padding: 16px 18px; font: 14px var(--os-font); color: var(--os-fg); line-height: 1.55; overflow: auto; height: 100%; box-sizing: border-box; background: var(--os-bg-1); }
.app-pane h2 { margin: 0 0 10px 0; color: var(--os-fg); font-family: var(--os-display); font-size: 22px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.15; }
.app-pane p { margin: 0 0 10px 0; color: var(--os-fg-2); }
.app-pane ul { padding-left: 18px; margin: 6px 0 12px; color: var(--os-fg-2); }
.app-pane li { padding: 2px 0; }
.app-pane code { font: 12px var(--os-mono); background: var(--os-bg-2); padding: 1px 6px; border-radius: var(--r-1, 6px); color: var(--os-fg); }
.app-pane a { color: var(--os-accent); text-decoration: none; }
.app-pane a:hover { text-decoration: underline; text-underline-offset: 2px; }
.app-pane .meta { color: var(--os-fg-3); font-size: 12px; }
.app-pane.mono { font: 12.5px var(--os-mono); padding: 12px; background: var(--os-bg-1); }
.app-pane.mono .row { padding: 5px 8px; cursor: pointer; border-radius: var(--r-1, 6px); }
.app-pane.mono .row:hover { background: var(--panel-hover, var(--os-bg-2)); }
.app-pane.mono .head { color: var(--os-accent); margin-bottom: 8px; padding-bottom: 6px; font-weight: 600; letter-spacing: 0.02em; }
.app-pane.mono pre { background: var(--os-bg-2); padding: 10px 12px; margin: 8px 0 0 0; max-height: 220px; overflow: auto; white-space: pre-wrap; font: 11.5px var(--os-mono); border-radius: var(--r-1, 6px); color: var(--os-fg); border: none; }
.app-shell-pane { margin: 0; padding: 8px; font: 12px var(--os-mono); color: var(--os-fg); background: var(--os-bg-0); height: 100%; overflow: auto; white-space: pre-wrap; box-sizing: border-box; }
.app-canvas { width: 100%; height: 100%; background: var(--os-bg-0); display: block; cursor: default; }
.app-canvas.x-display { background: #0b0d10; }
.app-frame { width: 100%; height: 100%; border: 0; background: var(--os-bg-0); }
.app-iframe { width: 100%; height: 100%; border: 0; display: block; }
.app-iframe.web { background: #ffffff; }
.app-text-cursor { animation: app-cursor-blink 0.5s step-end infinite; }
@keyframes app-cursor-blink { 50% { opacity: 0; } }
@media (max-width: 1023px) and (min-width: 768px) {
    .os-side-rail { display: flex; }
    .wm-root { left: var(--os-rail-w) !important; }
    .os-menubar { padding-left: calc(var(--os-rail-w) + 8px); }
    .os-taskbar { padding-left: calc(var(--os-rail-w) + 8px); }
    .os-menubar .os-instances { display: flex; }
    .os-menu { left: calc(var(--os-rail-w) + 8px); }
}

@media (max-width: 767px) {
    :root { --os-bar-h: var(--os-bar-h-mobile); }
    body { overscroll-behavior: none; }
    .os-menubar [data-role="home"] { display: inline-flex; min-width: var(--os-tap); min-height: var(--os-tap); padding: 0 12px; }
    .os-menubar [data-role="home"] .ic svg { width: 22px; height: 22px; }
    .os-menubar { font-size: 14px; padding: 0 8px; padding-top: env(safe-area-inset-top, 0); height: calc(var(--os-bar-h) + env(safe-area-inset-top, 0)); }
    .os-menubar [data-role="apps"] { display: none; }
    .os-menubar .os-brand { font-size: 13px; margin-right: 6px; }
    .os-menubar [data-role="add"] { display: none; }
    .os-menubar .os-instances { display: none; }
    .os-clock { display: none; }
    .os-taskbar {
        padding: 6px 8px calc(6px + env(safe-area-inset-bottom, 0));
        gap: 6px;
        overflow-x: auto;
        overflow-y: hidden;
        flex-wrap: nowrap;
        scroll-snap-type: x proximity;
        height: calc(var(--os-bar-h) + env(safe-area-inset-bottom, 0));
        align-items: center;
    }
    .os-taskbar::-webkit-scrollbar { display: none; }
    .os-task {
        flex: 0 0 auto;
        min-width: 120px;
        min-height: 44px;
        max-width: none;
        padding: 10px 14px;
        scroll-snap-align: start;
        font-size: 13px;
    }
    .os-task.focused { background: var(--panel-select, var(--os-accent-soft)); box-shadow: inset 4px 0 0 var(--os-accent); }
    .os-side-rail { display: none !important; }
    .os-menu { left: 8px; right: 8px; min-width: 0; top: calc(var(--os-bar-h) + env(safe-area-inset-top, 0) + 4px); }
    .wm-root {
        top: calc(var(--os-bar-h) + env(safe-area-inset-top, 0)) !important;
        bottom: calc(var(--os-bar-h) + env(safe-area-inset-bottom, 0)) !important;
        inset: calc(var(--os-bar-h) + env(safe-area-inset-top, 0)) 0 calc(var(--os-bar-h) + env(safe-area-inset-bottom, 0)) 0 !important;
    }
    .wm-win {
        position: absolute !important;
        left: 0 !important; top: 0 !important;
        width: 100% !important; height: 100% !important;
        border: none !important;
        border-radius: 0 !important;
        box-shadow: none !important;
    }
    .wm-bar {
        padding: 6px 10px !important;
        height: 36px !important;
        gap: 6px !important;
        cursor: default !important;
        touch-action: pan-y !important;
        pointer-events: none;
    }
    .wm-bar .wm-title { pointer-events: auto; font-size: 13px !important; }
    .wm-bar .wm-btns { pointer-events: auto; }
    .wm-btns .wm-btn:nth-child(1), .wm-btns .wm-btn:nth-child(2) { display: none !important; }
    .wm-btns .wm-btn:nth-child(3) { width: 44px !important; height: 44px !important; border-radius: var(--r-1, 6px) !important; background: var(--os-bg-3) !important; color: var(--os-fg) !important; }
    .wm-resize { display: none !important; }
}