/* ============================================================
   DeepOS – Layout & structure (theme-independent)
   Colors come from deepos-theme-*.css via CSS custom properties
   All layout sizes use clamp/vw/vh/% – no fixed px except
   1px borders, hairlines, and sub-pixel decorations
   ============================================================ */

/* ── Hide native cursor (game uses custom #cursor element) ── */
body:not(.use-native-cursor) #deepos-container,
body:not(.use-native-cursor) #deepos-container *,
body:not(.use-native-cursor) #deepos-theme-picker,
body:not(.use-native-cursor) #deepos-theme-picker * {
    cursor: none !important;
}

/* ── Responsive base unit ── */
:root {
    --dos-unit: clamp(0.6rem, 0.8vw, 1rem);
    --dos-bar-h: clamp(1.8rem, 2.4vh, 2.4rem);
    --dos-font-sm: clamp(0.75rem, 0.9vw, 1rem);
    --dos-font-md: clamp(0.8rem, 1vw, 1.1rem);
    --dos-font-lg: clamp(0.9rem, 1.1vw, 1.3rem);
}

/* ── Default theme variables (dark/operator) as fallback ── */
:root {
    --dos-bg:          #0c0c0c;
    --dos-bg-bar:      #161616;
    --dos-bg-panel:    #1a1a1a;
    --dos-bg-input:    #1e1e1e;
    --dos-bg-window:   #0a0a0a;
    --dos-bg-hover:    rgba(255,255,255,0.04);
    --dos-bg-selected: rgba(255,255,255,0.08);
    --dos-border:      #222;
    --dos-border-hi:   #333;
    --dos-border-lo:   #1a1a1a;
    --dos-text:        #999;
    --dos-text-dim:    #666;
    --dos-text-xdim:   #555;
    --dos-text-hi:     #ccc;
    --dos-text-label:  #888;
    --dos-accent:      #666;
    --dos-accent-hi:   #999;
    --dos-flag-active: #884444;
    --dos-close-bg:    #662222;
    --dos-close-border:#884444;
    --dos-min-bg:      #1a2a1a;
    --dos-min-border:  #335533;
    --dos-tab-bg:      #1a1a1a;
    --dos-tab-inactive:#111;
    --dos-icon-bg:     #111;
    --dos-icon-border: #222;
    --dos-icon-color:  #666;
    --dos-icon-hover:  #999;
    /* Per-icon accent colors (muted, conservative) */
    --dos-ic-board:    #6a5580;
    --dos-ic-broker:   #8a7a55;
    --dos-ic-crew:     #5a7a44;
    --dos-ic-ai:       #6a5588;
    --dos-ic-comp:     #4a7090;
    --dos-ic-edit:     #7a6050;
    --dos-ic-inspect:  #4a8080;
    --dos-ic-mail:     #4a6a8a;
    --dos-ic-mine:     #4a8a4a;
    --dos-ic-rig:      #5a7080;
    --dos-ic-shop:     #8a7040;
    --dos-ic-dossier:  #6a6050;
    --dos-ic-hack:     #8a4444;
    --dos-ic-news:     #7a6a44;
    --dos-ic-sanct:    #5a5a7a;
    --dos-ic-term:     #448a44;
    --dos-ic-tools:    #666;
    --dos-ic-games:    #7a5060;
    --dos-ic-theme:    #666;
    --dos-ic-exit:     #7a3a3a;
    --dos-font:        Consolas, "Courier New", monospace;
    --dos-logo-bg:     #181818;
    --dos-logo-border: #333;
    --dos-logo-color:  #444;
    --dos-menu-hover:  #1a1a1a;
    --dos-shadow:      rgba(0,0,0,0.6);
}

/* ── When DeepOS is active ── */
body.deepos-active #statusbar { display: none !important; }
body.deepos-active { padding-top: 0 !important; overflow: hidden !important; }
body.deepos-active #terminal {
    position: absolute !important;
    inset: 0 !important;
    margin: 0 !important;
    padding: var(--dos-unit) !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    max-height: 100% !important;
    min-height: 0 !important;
    z-index: auto !important;
}
body.deepos-active #shell-screen {
    padding-top: 0 !important;
}

body.deepos-active #scanline { z-index: 11000 !important; }
body.deepos-active #vignette { z-index: 11001 !important; }
body.deepos-active #flicker  { z-index: 11002 !important; }
body.deepos-active #cursor   { z-index: 13000 !important; }

/* ── Desktop ── */
#deepos-desktop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 5000;
    background: var(--dos-bg);
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 1px, rgba(128,128,128,0.02) 1px, rgba(128,128,128,0.02) 2px),
        repeating-linear-gradient(90deg, transparent, transparent 1px, rgba(128,128,128,0.02) 1px, rgba(128,128,128,0.02) 2px);
    font-family: var(--dos-font);
    font-size: var(--dos-font-md);
    color: var(--dos-text);
    user-select: none;
}
body.deepos-active #deepos-desktop { display: block; }

/* Login mode: desktop visible but no icons, no context menu */
body.deepos-login-mode #deepos-icons { display: none !important; }
body.deepos-login-mode #deepos-ctx-menu { display: none !important; }
body.deepos-login-mode .deepos-window {
    left: 0;
}

/* ── Desktop Icons ── */
#deepos-icons {
    position: absolute;
    top: var(--dos-bar-h);
    left: 0;
    right: 0;
    bottom: 0;
}

.deepos-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.25rem 0.15rem;
    cursor: pointer;
    width: clamp(4.6rem, 6.6vw, 7.3rem);
    text-align: center;
}
.deepos-icon:hover { background: var(--dos-bg-hover); }
.deepos-icon.selected { background: var(--dos-bg-selected); outline: 1px solid var(--dos-border-hi); }

.deepos-icon-gfx {
    width: clamp(2.1rem, 3.3vw, 3.7rem);
    height: clamp(2.1rem, 3.3vw, 3.7rem);
    border-radius: 0.15rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.2rem, 1.9vw, 2rem);
    border: 1px solid var(--dos-icon-border);
    background: var(--dos-icon-bg) !important;
    color: var(--dos-icon-color) !important;
    box-shadow: none;
}
.deepos-icon:hover .deepos-icon-gfx {
    border-color: var(--dos-border-hi);
    color: var(--dos-icon-hover) !important;
}

.deepos-icon span {
    font-size: var(--dos-font-sm);
    color: var(--dos-text-dim);
    text-shadow: none;
    line-height: 1.2;
    word-break: break-word;
    font-family: var(--dos-font);
}
.deepos-icon:hover span { color: var(--dos-text); }

/* ASCII art icons (16x14 character grid) */
.deepos-icon-ascii {
    margin: 0;
    padding: 0;
    font-family: var(--dos-font);
    font-size: clamp(0.3rem, 0.42vw, 0.48rem);
    font-weight: bold;
    line-height: 0.85;
    white-space: pre;
    text-align: center;
    letter-spacing: 0;
    width: clamp(2.1rem, 3.3vw, 3.7rem);
    height: clamp(2.1rem, 3.3vw, 3.7rem);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.15rem;
    border: 1px solid var(--dos-icon-border);
    background: var(--dos-icon-bg) !important;
    box-shadow: none;
}
.deepos-icon:hover .deepos-icon-ascii {
    border-color: var(--dos-border-hi);
    filter: brightness(1.4);
}

/* ── Deskbar ── */
#deepos-deskbar {
    position: fixed;
    top: 0; right: 0; left: 0;
    height: var(--dos-bar-h);
    background: var(--dos-bg-bar);
    border-bottom: 1px solid var(--dos-border);
    display: none;
    align-items: center;
    z-index: 5100;
    font-family: var(--dos-font);
    font-size: var(--dos-font-md);
    letter-spacing: 0.02em;
}
body.deepos-active #deepos-deskbar { display: flex; }

#deepos-leaf-btn {
    height: 100%;
    padding: 0 calc(var(--dos-unit) * 1.5);
    background: var(--dos-bg-panel);
    border: none;
    border-right: 1px solid var(--dos-border);
    display: flex;
    align-items: center;
    gap: calc(var(--dos-unit) * 0.7);
    cursor: pointer;
    font-family: var(--dos-font);
    font-size: var(--dos-font-md);
    font-weight: normal;
    color: var(--dos-text-label);
    flex-shrink: 0;
}
#deepos-leaf-btn:hover { background: var(--dos-bg-input); color: var(--dos-accent-hi); }

.deepos-leaf-icon {
    width: calc(var(--dos-unit) * 1.3);
    height: calc(var(--dos-unit) * 1.3);
    background: var(--dos-border-hi);
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
}
#deepos-leaf-btn:hover .deepos-leaf-icon { background: var(--dos-text-dim); }

#deepos-deskbar-status {
    display: flex;
    align-items: center;
    gap: 0;
    margin-left: auto;
    height: 100%;
    padding-right: calc(var(--dos-unit) * 0.5);
}

.deepos-status-item {
    padding: 0 calc(var(--dos-unit) * 0.8);
    color: var(--dos-text);
    font-size: var(--dos-font-md);
    height: 100%;
    display: flex;
    align-items: center;
    border-left: 1px solid var(--dos-border-lo);
    white-space: nowrap;
}
.deepos-status-item:first-child { border-left: none; }

.deepos-flag {
    font-weight: bold;
    opacity: 0.2;
    margin: 0 0.05rem;
    color: var(--dos-text-dim);
}
.deepos-flag.active { opacity: 1; color: var(--dos-flag-active); }

#deepos-deskbar-apps {
    display: flex;
    align-items: center;
    height: 100%;
    margin-left: 0.15rem;
    gap: 1px;
}

.deepos-taskbar-entry {
    height: calc(var(--dos-bar-h) - 0.4rem);
    padding: 0 calc(var(--dos-unit) * 1);
    background: var(--dos-bg-panel);
    border: 1px solid var(--dos-border);
    border-radius: 0;
    font-size: var(--dos-font-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: calc(var(--dos-unit) * 0.5);
    font-family: var(--dos-font);
    color: var(--dos-text-dim);
}
.deepos-taskbar-entry:hover { background: var(--dos-bg-input); color: var(--dos-text); border-color: var(--dos-border-hi); }
.deepos-taskbar-entry.active { background: var(--dos-bg-input); border-color: var(--dos-border-hi); color: var(--dos-text); }

.deepos-taskbar-dot { width: 0.35rem; height: 0.35rem; border-radius: 0; opacity: 0.6; }

/* ── Leaf Menu ── */
#deepos-leaf-menu {
    position: fixed;
    top: var(--dos-bar-h);
    left: 0;
    width: clamp(10rem, 12vw, 14rem);
    background: var(--dos-bg-bar);
    border: 1px solid var(--dos-border);
    border-top: none;
    box-shadow: 0.15rem 0.15rem 0.5rem var(--dos-shadow);
    z-index: 5150;
    display: none;
}
#deepos-leaf-menu.open { display: block; }

.deepos-menu-item {
    padding: 0.2rem calc(var(--dos-unit) * 1.3);
    cursor: pointer;
    font-size: var(--dos-font-md);
    display: flex;
    justify-content: space-between;
    font-family: var(--dos-font);
    color: var(--dos-text-label);
}
.deepos-menu-item:hover { background: var(--dos-menu-hover); color: var(--dos-text-hi); }
.deepos-menu-sep { height: 1px; background: var(--dos-border-lo); margin: 1px 0; }

/* ── Window Chrome ── */
.deepos-window {
    position: fixed;
    display: none;
    flex-direction: column;
    z-index: 5200;
    min-width: 20vw;
    min-height: 15vh;
}
.deepos-window.visible { display: flex; }

.deepos-window-tab {
    display: flex;
    align-items: flex-end;
    height: calc(var(--dos-bar-h) * 0.85);
    flex-shrink: 0;
    position: relative;
}

.deepos-tab-bg {
    height: calc(var(--dos-bar-h) * 0.75);
    background: var(--dos-tab-bg);
    border: 1px solid var(--dos-border-hi);
    border-bottom: none;
    border-radius: 0.15rem 0.15rem 0 0;
    display: flex;
    align-items: center;
    padding: 0 calc(var(--dos-unit) * 1.2);
    gap: calc(var(--dos-unit) * 0.7);
    max-width: 18vw;
    cursor: default;
}

.deepos-window.inactive .deepos-tab-bg {
    background: var(--dos-tab-inactive);
    border-color: var(--dos-border);
}

.deepos-tab-close {
    width: calc(var(--dos-unit) * 1.1);
    height: calc(var(--dos-unit) * 1.1);
    background: var(--dos-border);
    border: 1px solid var(--dos-border-hi);
    cursor: pointer; flex-shrink: 0;
}
.deepos-tab-close:hover { background: var(--dos-close-bg); border-color: var(--dos-close-border); }

.deepos-tab-minimize {
    width: calc(var(--dos-unit) * 1.1);
    height: calc(var(--dos-unit) * 1.1);
    background: var(--dos-border);
    border: 1px solid var(--dos-border-hi);
    cursor: pointer; flex-shrink: 0; position: relative;
}
.deepos-tab-minimize::after {
    content: '';
    position: absolute; bottom: 1px; left: 1px; right: 1px;
    height: 1px; background: var(--dos-text-dim);
}
.deepos-tab-minimize:hover { background: var(--dos-min-bg); border-color: var(--dos-min-border); }

.deepos-tab-title {
    font-size: var(--dos-font-sm); font-weight: normal;
    color: var(--dos-text-label);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    font-family: var(--dos-font);
    letter-spacing: 0.04em; text-transform: uppercase;
}

.deepos-tab-line {
    flex: 1; height: 1px;
    background: var(--dos-border);
    align-self: flex-end;
}

.deepos-window-body {
    flex: 1; min-height: 0;
    background: var(--dos-bg-window);
    border: 1px solid var(--dos-border);
    border-top: none;
    overflow: hidden; position: relative;
    display: flex; flex-direction: column;
}

.deepos-window.deepos-win-terminal .deepos-window-body { background: var(--dos-bg-window, #0a0a0a); }

/* Resize grip */
.deepos-resize-grip {
    position: absolute;
    bottom: 0; right: 0;
    width: clamp(0.7rem, 1vw, 1rem);
    height: clamp(0.7rem, 1vw, 1rem);
    cursor: nwse-resize;
    z-index: 10;
    background:
        linear-gradient(135deg,
            transparent 30%,
            var(--dos-border-hi) 30%, var(--dos-border-hi) 38%,
            transparent 38%, transparent 52%,
            var(--dos-border-hi) 52%, var(--dos-border-hi) 60%,
            transparent 60%, transparent 74%,
            var(--dos-border-hi) 74%, var(--dos-border-hi) 82%,
            transparent 82%);
    opacity: 0.5;
}
.deepos-resize-grip:hover { opacity: 1; }

/* X close button (top-right of every window) */
.deepos-x-close {
    position: absolute;
    top: 0;
    right: 0;
    width: calc(var(--dos-bar-h) * 0.85);
    height: calc(var(--dos-bar-h) * 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--dos-font-lg);
    color: var(--dos-text-dim);
    cursor: pointer;
    z-index: 15;
    background: var(--dos-bg-panel);
    border-left: 1px solid var(--dos-border);
    border-bottom: 1px solid var(--dos-border);
}
.deepos-x-close:hover {
    color: #ff4444;
    background: var(--dos-close-bg);
}

/* ── Context Menu ── */
#deepos-ctx-menu {
    position: fixed;
    width: clamp(9rem, 11vw, 13rem);
    background: var(--dos-bg-bar);
    border: 1px solid var(--dos-border);
    box-shadow: 0.15rem 0.15rem 0.5rem var(--dos-shadow);
    z-index: 5300; display: none;
    font-family: var(--dos-font);
}
#deepos-ctx-menu.open { display: block; }

/* ── About Dialog ── */
#deepos-about {
    position: fixed; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: clamp(16rem, 22vw, 24rem);
    z-index: 5400;
    display: none; flex-direction: column;
    box-shadow: 0 0 1.2rem var(--dos-shadow);
    font-family: var(--dos-font);
}
#deepos-about.visible { display: flex; }

.deepos-about-body {
    background: var(--dos-bg-bar);
    border: 1px solid var(--dos-border);
    padding: calc(var(--dos-unit) * 2.5);
    text-align: center; color: var(--dos-text);
}

.deepos-about-logo { display: none; }

.deepos-about-logo-ascii {
    margin: 8vh auto calc(var(--dos-unit) * 1.5);
    padding: 0;
    font-family: var(--dos-font);
    font-size: clamp(0.3rem, 0.42vw, 0.5rem);
    font-weight: bold;
    line-height: 0.9;
    white-space: pre;
    text-align: center;
    color: var(--dos-ic-logo, var(--dos-ic-term));
    letter-spacing: 0;
    font-weight: bold;
}

.deepos-about-title {
    font-size: var(--dos-font-lg); font-weight: normal; color: var(--dos-text);
    letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 0.3rem;
}
.deepos-about-version { font-size: var(--dos-font-sm); color: var(--dos-text-xdim); margin-bottom: calc(var(--dos-unit) * 1.8); }
.deepos-about-text { font-size: var(--dos-font-sm); color: var(--dos-text-dim); line-height: 1.6; text-align: left; }
.deepos-about-text strong { color: var(--dos-text); font-weight: normal; }

.deepos-about-btn {
    display: block; margin: calc(var(--dos-unit) * 1.8) auto 0;
    padding: 0.2rem calc(var(--dos-unit) * 2.5);
    background: var(--dos-bg-input); color: var(--dos-text-label);
    border: 1px solid var(--dos-border-hi); border-radius: 0;
    font-size: var(--dos-font-sm); cursor: pointer;
    font-family: var(--dos-font);
    letter-spacing: 0.08em; text-transform: uppercase;
}
.deepos-about-btn:hover { background: var(--dos-bg-panel); color: var(--dos-accent-hi); border-color: var(--dos-text-xdim); }

/* ── Theme Picker Modal ── */
#deepos-theme-picker {
    position: fixed; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: clamp(14rem, 19vw, 20rem);
    z-index: 5400;
    display: none; flex-direction: column;
    box-shadow: 0 0 1.2rem var(--dos-shadow);
    font-family: var(--dos-font);
}
#deepos-theme-picker.visible { display: flex; }

.deepos-theme-list {
    background: var(--dos-bg-bar);
    border: 1px solid var(--dos-border);
    padding: calc(var(--dos-unit) * 1.3);
}

.deepos-theme-option {
    display: flex; align-items: center;
    gap: calc(var(--dos-unit) * 1.3);
    padding: calc(var(--dos-unit) * 0.7) calc(var(--dos-unit) * 1);
    cursor: pointer;
    color: var(--dos-text-dim); font-size: var(--dos-font-md);
    border: 1px solid transparent;
}
.deepos-theme-option:hover {
    background: var(--dos-bg-hover);
    color: var(--dos-text-hi);
    border-color: var(--dos-border);
}
.deepos-theme-option.active {
    color: var(--dos-text-hi);
    border-color: var(--dos-border-hi);
    background: var(--dos-bg-selected);
}
.deepos-theme-option.active::before {
    content: '\2714';
    margin-right: calc(var(--dos-unit) * 0.3);
    color: var(--dos-text-hi);
    font-size: var(--dos-font-sm);
}

.deepos-theme-swatch {
    width: clamp(1rem, 1.4vw, 1.5rem);
    height: clamp(0.7rem, 1vw, 1rem);
    border: 1px solid var(--dos-border-hi);
    flex-shrink: 0;
}

/* ── App overlay adjustments ── */
body.deepos-active #shop-overlay,
body.deepos-active #hw-overlay,
body.deepos-active #pine-overlay,
body.deepos-active #aiforge-overlay,
body.deepos-active #deepcomp-overlay,
body.deepos-active #miner-overlay,
body.deepos-active #crew-overlay,
body.deepos-active #dossier-overlay,
body.deepos-active #deepinspect-overlay,
body.deepos-active #deepedit-overlay,
body.deepos-active #hack-select-overlay,
body.deepos-active #crew-overlay,
body.deepos-active #lynx-overlay {
    position: relative !important;
    inset: auto !important;
    top: auto !important; left: auto !important;
    right: auto !important; bottom: auto !important;
    width: 100% !important; height: 100% !important;
    max-height: 100% !important; max-width: 100% !important;
    min-height: 0 !important;
    z-index: auto !important; border-radius: 0 !important;
}


/* ── Folder Popup ── */
#deepos-folder-popup {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10000;
    min-width: clamp(14rem, 20vw, 22rem);
    max-width: clamp(18rem, 30vw, 30rem);
    background: var(--dos-bg-bar);
    border: 1px solid var(--dos-border-hi);
    box-shadow: 0 0 1.5rem var(--dos-shadow);
    font-family: var(--dos-font);
}
#deepos-folder-popup.open { display: block; }

.dos-folder-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.4em 0.7em;
    border-bottom: 1px solid var(--dos-border);
    background: var(--dos-bg-panel);
}

.dos-folder-title {
    color: var(--dos-text);
    font-size: var(--dos-font-md);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.dos-folder-close {
    cursor: pointer;
    color: var(--dos-text-dim);
    font-size: var(--dos-font-lg);
    padding: 0 0.3em;
}
.dos-folder-close:hover { color: #ff4444; }

.dos-folder-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3em;
    padding: 0.8em;
    justify-content: center;
}

.dos-folder-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2em;
    padding: 0.5em 0.4em;
    cursor: pointer;
    width: clamp(4rem, 5.5vw, 5.5rem);
    text-align: center;
}
.dos-folder-item:hover { background: var(--dos-bg-hover); }

.dos-folder-item .deepos-icon-gfx {
    width: clamp(1.8rem, 2.8vw, 3rem);
    height: clamp(1.8rem, 2.8vw, 3rem);
    font-size: clamp(1rem, 1.5vw, 1.6rem);
}

.dos-folder-item span {
    color: var(--dos-text-dim);
    font-size: var(--dos-font-sm);
    font-family: var(--dos-font);
}
.dos-folder-item:hover span { color: var(--dos-text); }

/* ── Internal App Overlays ── */
.dos-int-overlay {
    position: fixed;
    inset: 0;
    z-index: 5250;
    background: var(--dos-bg-window, #0a0a0a);
    font-family: var(--dos-font, Consolas, monospace);
    color: var(--dos-text, #888);
    display: none;
    flex-direction: column;
    overflow: hidden;
}
.dos-int-overlay.active { display: flex; }

.dos-int-header {
    display: flex;
    align-items: center;
    gap: calc(var(--dos-unit, 0.6rem) * 1);
    padding: 0.3em 0.6em;
    border-bottom: 1px solid var(--dos-border, #222);
    background: var(--dos-bg-bar, #161616);
    flex-shrink: 0;
}

.dos-int-title {
    color: var(--dos-text-label, #888);
    font-size: var(--dos-font-sm, 0.75rem);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.dos-int-close {
    cursor: pointer;
    color: var(--dos-text-dim, #555);
    font-size: var(--dos-font-sm, 0.75rem);
    padding: 0.1em 0.5em;
    border: 1px solid var(--dos-border, #222);
    margin-left: 0.5em;
}
.dos-int-close:hover { color: var(--dos-text-hi, #ccc); border-color: var(--dos-border-hi, #333); }

.dos-int-btn {
    cursor: pointer;
    color: var(--dos-text-dim, #555);
    font-size: var(--dos-font-sm, 0.75rem);
    font-family: var(--dos-font, Consolas, monospace);
    padding: 0.1em 0.6em;
    background: var(--dos-bg-panel, #1a1a1a);
    border: 1px solid var(--dos-border, #222);
}
.dos-int-btn:hover { color: var(--dos-text, #999); border-color: var(--dos-border-hi, #333); }

.dos-int-body {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Calc buttons */
.dos-calc-row {
    display: flex;
    gap: 1px;
    margin-bottom: 1px;
}
.dos-calc-btn {
    flex: 1;
    padding: 0.5em;
    font-family: var(--dos-font, Consolas, monospace);
    font-size: var(--dos-font-md, 0.8rem);
    background: var(--dos-bg-panel, #1a1a1a);
    color: var(--dos-text, #999);
    border: 1px solid var(--dos-border, #222);
    cursor: pointer;
    text-align: center;
}
.dos-calc-btn:hover { background: var(--dos-bg-input, #1e1e1e); color: var(--dos-text-hi, #ccc); }
.dos-calc-fn { color: var(--dos-text-dim, #666); }
.dos-calc-op { color: #8a7a5a; }
.dos-calc-conv { color: #5a7a8a; }

/* Notes file list */
.dos-notes-item {
    padding: 0.2em 0.4em;
    cursor: pointer;
    color: var(--dos-text-dim, #555);
    font-size: var(--dos-font-sm, 0.75rem);
    border-left: 2px solid transparent;
}
.dos-notes-item:hover { color: var(--dos-text, #999); background: var(--dos-bg-hover, rgba(255,255,255,0.04)); }
.dos-notes-item.active { color: var(--dos-text-hi, #ccc); border-left-color: var(--dos-border-hi, #333); }

/* Internal app overlays inside DeepOS windows */
body.deepos-active .deepos-window-body > .dos-int-overlay {
    position: absolute !important;
    inset: 0 !important;
    z-index: 10 !important;
    max-height: 100% !important;
    max-width: 100% !important;
}

/* Internal app windows sit above main app windows */
[id^="deepos-win-int-"] {
    z-index: 5300;
}

/* HackSelect & ScanSelect – when reparented into terminal window body */
body.deepos-active .deepos-window-body > #hack-select-overlay,
body.deepos-active .deepos-window-body > #scan-select-overlay {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100% !important;
    max-height: 100% !important;
    z-index: 10 !important;
}