#system-status-popover {
    left: 72px;
    bottom: auto;
    top: 24px;
}

/* --- Settings: tabs + appearance --- */
.settings-tab-btn {
    background: transparent;
    border: none;
    border-left: 2px solid transparent;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 12px;
    text-align: left;
    padding: 12px 15px;
    cursor: pointer;
    letter-spacing: 0.5px;
}
.settings-tab-btn:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); }
.settings-tab-btn.active { color: var(--accent-blue); border-left-color: var(--accent-blue); background: rgba(74,144,226,0.06); }

.settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-subtle);
    padding: 15px;
    border-radius: 4px;
}
.settings-row-title { font-weight: bold; font-size: 13px; color: var(--text-primary); }
.settings-row-desc { font-size: 11px; color: var(--text-secondary, var(--text-muted)); margin-top: 4px; }
.settings-check { cursor: pointer; width: 16px; height: 16px; }

/* Shared OS-styled button/select control — used by Settings (export/import,
   theme + font-scale pickers) and the Locker pin button. */
.sys-button {
    background-color: rgba(74, 144, 226, 0.1);
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 8px 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.sys-button:hover { background-color: var(--accent-blue); color: var(--bg-void); }
select.sys-button {
    -webkit-appearance: none;
    appearance: none;
}
select.sys-button:hover { color: var(--accent-blue); background-color: rgba(74, 144, 226, 0.1); }

.wallpaper-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 8px;
}
.wallpaper-swatch {
    height: 64px;
    border-radius: 6px;
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    background-color: var(--bg-void);
    background-size: cover;
    background-position: center;
}
.wallpaper-swatch span {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    background: rgba(0,0,0,0.6);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 4px 6px;
}
.wallpaper-swatch.is-active { border-color: var(--accent-blue); box-shadow: 0 0 0 1px var(--accent-blue); }

/* --- Narrow / mobile viewport --- */
@media (max-width: 640px) {
    #taskbar { width: 52px; padding: 14px 0; }
    .app-icon { width: 40px; height: 40px; }
    .app-icon svg { width: 18px; height: 18px; }
    .desktop-icon { width: 68px; height: 80px; }
    .desktop-icon-glyph { width: 36px; height: 36px; }
    .desktop-icon-glyph svg { width: 18px; height: 18px; }
    .desktop-icon-label { font-size: 9.5px; max-width: 66px; }
    #desktop-icons.grid-visible { background-size: 76px 88px; }
    .notification-tray { top: 10px; right: 10px; left: 10px; }
    .os-toast { width: auto; }
    .desktop-context-menu { min-width: 160px; }
    .notification-panel { left: 10px; right: 10px; width: auto; bottom: 10px; }
}

/* --- System corner: Help + Campaign Archive (always-available, floats
   top-right, independent of the taskbar's progression-gated icons) --- */
#system-corner {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 500;
    display: flex;
    gap: 8px;
}
.corner-btn {
    width: auto;
    height: 38px;
    padding: 0 14px 0 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 6px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}
.corner-btn svg, .corner-btn img { width: 20px; height: 20px; flex-shrink: 0; object-fit: contain; }
.corner-btn-label {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
}
.corner-btn:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: rgba(74, 144, 226, 0.08);
}
.corner-btn.hidden { display: none; }

@media (max-width: 640px) {
    #system-corner { top: 8px; right: 8px; gap: 6px; }
    .corner-btn { height: 32px; padding: 0 10px 0 8px; }
    .corner-btn-label { display: none; }
}