/* OfficeCalculator.net calculator-only styles.
   The website theme file styles-new.css is not changed. */

.oc-calculator-app,
.oc-calculator-app * {
    box-sizing: border-box;
}

.oc-calculator-app {
    --oc-bg: #ffffff;
    --oc-panel: #f5f6f7;
    --oc-border: #d9dde2;
    --oc-text: #202124;
    --oc-muted: #62666b;
    --oc-key: #ffffff;
    --oc-key-hover: #eef1f3;
    --oc-accent: #f44336;
    --oc-accent-dark: #d93025;
    width: 100%;
    max-width: 1040px;
    margin: 8px auto 34px;
    overflow: hidden;
    color: var(--oc-text);
    background: var(--oc-bg);
    border: 1px solid var(--oc-border);
    border-radius: 13px;
    box-shadow: 0 7px 22px rgba(0,0,0,.10);
}

.oc-calculator-app.is-dark {
    --oc-bg: #202124;
    --oc-panel: #292a2d;
    --oc-border: #45474b;
    --oc-text: #f1f3f4;
    --oc-muted: #bdc1c6;
    --oc-key: #303134;
    --oc-key-hover: #3c4043;
}

.oc-calculator-app button,
.oc-calculator-app input,
.oc-calculator-app select,
.oc-calculator-app output {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

/* Override the site's general button styles only inside the calculator. */
.oc-calculator-app button {
    width: auto;
    margin: 0;
    padding: 0;
    font-size: 14px;
    line-height: 1.2;
    color: var(--oc-text);
    background: var(--oc-key);
    border: 1px solid var(--oc-border);
    border-radius: 7px;
    box-shadow: none;
    text-shadow: none;
    cursor: pointer;
    transition: background-color .15s ease, border-color .15s ease, transform .05s ease;
}

.oc-calculator-app button:hover {
    color: var(--oc-text);
    background: var(--oc-key-hover);
}

.oc-calculator-app button:active { transform: translateY(1px); }
.oc-calculator-app [hidden] { display: none !important; }

.calculator-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 11px 13px;
    background: var(--oc-panel);
    border-bottom: 1px solid var(--oc-border);
}

.mode-tabs,
.status-controls {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.oc-calculator-app .mode-tab,
.oc-calculator-app .small-control,
.oc-calculator-app .text-button {
    min-height: 34px;
    padding: 7px 12px;
    font-size: 14px;
}

.oc-calculator-app .mode-tab.active {
    color: #fff;
    background: var(--oc-accent);
    border-color: var(--oc-accent);
}

.calculator-workspace {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(260px, .9fr);
    min-height: 480px;
}

.calculator-main {
    min-width: 0;
    padding: 14px;
}

.display-panel {
    min-height: 165px;
    margin-bottom: 12px;
    padding: 18px 20px;
    overflow: hidden;
    text-align: right;
    background: #202124;
    border: 1px solid #303238;
    border-radius: 14px;
    box-shadow: 0 5px 16px rgba(0, 0, 0, .16);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-end;
}

.expression {
    min-height: 24px;
    width: 100%;
    overflow-wrap: anywhere;
    color: #c7c9cc;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.35;
    text-align: right;
}

.result {
    display: block;
    width: 100%;
    margin-top: 8px;
    overflow-wrap: anywhere;
    color: #ffffff;
    font-size: clamp(38px, 5vw, 58px);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -.02em;
    text-align: right;
}

.display-message,
.memory-indicator {
    width: 100%;
    color: #b7b9bd;
    font-size: 12px;
    line-height: 1.35;
    text-align: right;
}

.display-message { min-height: 17px; margin-top: 8px; }
.memory-indicator { min-height: 15px; margin-bottom: 4px; }

.scientific-panel {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 8px;
}

.oc-calculator-app .scientific-panel button {
    min-height: 34px;
    padding: 6px 4px;
    background: var(--oc-panel);
    font-size: 13px;
}

.memory-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 7px;
    margin-bottom: 7px;
}

.oc-calculator-app .memory-row button {
    min-height: 36px;
    padding: 6px;
    color: var(--oc-muted);
    background: var(--oc-panel);
}

.keypad {
    display: grid;
    grid-template-columns: repeat(4, minmax(48px, 1fr));
    gap: 7px;
}

.oc-calculator-app .keypad .key {
    min-height: 47px;
    padding: 7px 5px;
    font-size: 16px;
    font-weight: 600;
}

.oc-calculator-app .keypad .utility { background: var(--oc-panel); }
.oc-calculator-app .keypad .operator { color: var(--oc-accent-dark); }
.oc-calculator-app .keypad .equals {
    grid-column: 1 / -1;
    color: #fff;
    background: var(--oc-accent);
    border-color: var(--oc-accent);
}
.oc-calculator-app .keypad .equals:hover { color:#fff; background:var(--oc-accent-dark); }

.keyboard-tip {
    margin: 8px 0 0;
    padding: 0;
    color: var(--oc-muted);
    font-size: 12px;
    line-height: 1.4;
}

.history-panel {
    min-width: 0;
    padding: 14px;
    background: var(--oc-panel);
    border-left: 1px solid var(--oc-border);
}

.history-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 9px;
}

.history-heading h2 {
    margin: 0;
    padding: 0;
    color: var(--oc-accent);
    font-size: 17px;
    line-height: 1.2;
}

.history-heading span {
    color: var(--oc-muted);
    font-size: 12px;
}

.history-list {
    height: 285px;
    margin: 0 0 10px;
    padding: 0 3px 0 22px;
    overflow-y: auto;
}

.empty-history {
    padding: 24px 4px;
    color: var(--oc-muted);
    font-size: 13px;
}

.history-item {
    margin-bottom: 8px;
    padding: 9px;
    background: var(--oc-bg);
    border: 1px solid var(--oc-border);
    border-radius: 7px;
}

.history-item-expression {
    overflow-wrap: anywhere;
    color: var(--oc-muted);
    font-size: 12px;
}

.history-item-result {
    margin-top: 3px;
    overflow-wrap: anywhere;
    color: var(--oc-text);
    font-size: 15px;
    font-weight: 700;
}

.history-item-actions {
    display: flex;
    gap: 5px;
    margin-top: 6px;
}

.oc-calculator-app .history-item-actions button {
    min-height: 25px;
    padding: 4px 7px;
    font-size: 11px;
}

.history-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
}

.oc-calculator-app .history-actions button {
    min-height: 37px;
    padding: 7px 8px;
    color: #fff;
    background: var(--oc-accent);
    border-color: var(--oc-accent);
    font-size: 13px;
}

.oc-calculator-app .history-actions button:hover {
    color: #fff;
    background: var(--oc-accent-dark);
}

.privacy-note {
    margin: 9px 0 0;
    padding: 0;
    color: var(--oc-muted);
    font-size: 11px;
    line-height: 1.45;
}

.business-panel { margin-bottom: 9px; }
.business-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}
.business-card {
    padding: 10px;
    background: var(--oc-panel);
    border: 1px solid var(--oc-border);
    border-radius: 8px;
}
.business-card h3 { margin:0 0 7px; color:var(--oc-text); font-size:14px; }
.business-card label { display:block; margin:6px 0 3px; color:var(--oc-text); font-size:12px; }
.business-card input,
.business-card select {
    width:100%; height:34px; margin:0; padding:5px 7px;
    color:var(--oc-text); background:var(--oc-bg);
    border:1px solid var(--oc-border); border-radius:6px;
}
.oc-calculator-app .business-card button { width:100%; min-height:34px; margin-top:7px; padding:6px; color:#fff; background:var(--oc-accent); border-color:var(--oc-accent); }
.business-output { min-height:18px; margin-top:6px; color:var(--oc-text); font-size:12px; line-height:1.4; }

@media (max-width: 900px) {
    .calculator-workspace { grid-template-columns: 1fr; }
    .history-panel { border-top:1px solid var(--oc-border); border-left:0; }
    .history-list { height:auto; max-height:260px; }
}

@media (max-width: 600px) {
    .oc-calculator-app { border-radius:9px; }
    .calculator-topbar { align-items:flex-start; padding:9px; }
    .calculator-main, .history-panel { padding:10px; }
    .scientific-panel { grid-template-columns:repeat(3,1fr); }
    .business-grid { grid-template-columns:1fr; }
    .oc-calculator-app .mode-tab,
    .oc-calculator-app .small-control { min-height:32px; padding:6px 9px; font-size:13px; }
    .oc-calculator-app .keypad .key { min-height:45px; }
}

@media print {
    body * { visibility:hidden !important; }
    .oc-calculator-app, .oc-calculator-app * { visibility:visible !important; }
    .oc-calculator-app { position:absolute; inset:0; max-width:none; border:0; box-shadow:none; }
    .calculator-topbar, .calculator-main, .history-actions, .privacy-note { display:none !important; }
    .calculator-workspace { display:block; }
    .history-panel { border:0; }
    .history-list { height:auto; overflow:visible; }
}

/* Expandable business workspace */
.business-panel {
    margin: 0 0 9px;
    padding: 9px;
    background: var(--oc-panel);
    border: 1px solid var(--oc-border);
    border-radius: 8px;
}

.business-tool-tabs {
    display: flex;
    gap: 6px;
    padding-bottom: 8px;
    overflow-x: auto;
    scrollbar-width: thin;
}

.oc-calculator-app .business-tool-tab {
    flex: 0 0 auto;
    min-height: 31px;
    padding: 5px 10px;
    font-size: 12px;
    white-space: nowrap;
}

.oc-calculator-app .business-tool-tab.active {
    color: #fff;
    background: var(--oc-accent);
    border-color: var(--oc-accent);
}

.business-tool-body {
    padding: 9px;
    background: var(--oc-bg);
    border: 1px solid var(--oc-border);
    border-radius: 7px;
}

.business-form h3 {
    margin: 0 0 8px;
    color: var(--oc-text);
    font-size: 14px;
}

.business-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.business-fields.three-fields { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.business-form label {
    display: block;
    margin: 0;
    color: var(--oc-muted);
    font-size: 11px;
    font-weight: 700;
}

.business-form input {
    width: 100%;
    height: 33px;
    margin: 4px 0 0;
    padding: 5px 7px;
    color: var(--oc-text);
    background: var(--oc-bg);
    border: 1px solid var(--oc-border);
    border-radius: 6px;
    font-size: 13px;
}

.business-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 8px;
}

.oc-calculator-app .business-buttons button,
.oc-calculator-app .business-result-actions button {
    min-height: 33px;
    padding: 6px 10px;
    color: #fff;
    background: var(--oc-accent);
    border-color: var(--oc-accent);
    font-size: 12px;
}

.oc-calculator-app .business-buttons button:hover,
.oc-calculator-app .business-result-actions button:hover {
    color: #fff;
    background: var(--oc-accent-dark);
}

.business-result {
    display: block;
    min-height: 20px;
    margin-top: 8px;
    color: var(--oc-text);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.45;
}

.business-full-link {
    display: inline-block;
    margin-top: 6px;
    font-size: 11px;
}

.business-result-actions {
    display: flex;
    gap: 7px;
    margin-top: 8px;
}

/* Display sizing on narrow screens */
@media (max-width: 600px) {
    .display-panel { min-height: 145px; padding: 16px; }
    .result { font-size: clamp(34px, 12vw, 50px); }
}

/* Display alignment update: keep every screen line fixed to the right. */
.oc-calculator-app .display-panel {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    width: 100%;
    min-height: 175px;
    padding: 22px 24px;
    text-align: right;
}

.oc-calculator-app .display-panel .memory-indicator,
.oc-calculator-app .display-panel .expression,
.oc-calculator-app .display-panel .result,
.oc-calculator-app .display-panel .display-message {
    display: block;
    width: 100%;
    margin-left: auto;
    margin-right: 0;
    text-align: right;
    direction: ltr;
}

.oc-calculator-app .display-panel .expression {
    min-height: 25px;
    font-size: 16px;
}

.oc-calculator-app .display-panel .result {
    margin-top: 12px;
    font-size: clamp(42px, 5.4vw, 62px);
    line-height: 1.05;
}

.oc-calculator-app .display-panel .display-message {
    margin-top: 12px;
    font-size: 13px;
}

@media (max-width: 600px) {
    .oc-calculator-app .display-panel {
        min-height: 150px;
        padding: 18px;
    }

    .oc-calculator-app .display-panel .result {
        font-size: clamp(36px, 12vw, 52px);
    }
}

/* v9 mobile touch and compact-workspace refinements */
@media (max-width: 600px) {
    .calculator-topbar { display:grid; grid-template-columns:1fr; gap:8px; }
    .mode-tabs { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); width:100%; gap:6px; }
    .status-controls { justify-content:flex-end; width:100%; }
    .oc-calculator-app .mode-tab,
    .oc-calculator-app .small-control,
    .oc-calculator-app .text-button { min-height:42px; padding:8px 9px; }
    .oc-calculator-app .memory-row button { min-height:42px; }
    .oc-calculator-app .history-actions button { min-height:44px; }
    .oc-calculator-app .business-tool-tab { min-height:40px; }
    .oc-calculator-app .business-buttons button,
    .oc-calculator-app .business-result-actions button { min-height:42px; }
}


/* v13 restore premium classic calculator display */
.oc-calculator-app {
    --oc-accent: #ff4a3d;
    --oc-accent-dark: #e23a2f;
}

.oc-calculator-app .display-panel {
    position: relative;
    min-height: 178px;
    padding: 18px 20px 20px;
    overflow: hidden;
    background: linear-gradient(180deg, #1f2127 0%, #181a20 100%);
    border: 1px solid #2a2d35;
    border-radius: 16px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.04), 0 10px 24px rgba(0,0,0,.18);
    align-items: flex-end;
    justify-content: flex-end;
}

.oc-calculator-app .display-panel::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,.03);
}

.oc-calculator-app .display-panel .memory-indicator,
.oc-calculator-app .display-panel .expression,
.oc-calculator-app .display-panel .result,
.oc-calculator-app .display-panel .display-message {
    width: 100%;
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
    text-align: right;
    direction: ltr;
    font-variant-numeric: tabular-nums;
}

.oc-calculator-app .display-panel .memory-indicator {
    min-height: 15px;
    margin-bottom: 6px;
    color: #d0d3d8;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
}

.oc-calculator-app .display-panel .expression {
    min-height: 26px;
    color: #d5d8dd;
    opacity: .96;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.35;
    letter-spacing: .01em;
}

.oc-calculator-app .display-panel .result {
    margin-top: 12px;
    color: #ffffff;
    font-size: clamp(52px, 6vw, 76px);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.035em;
}

.oc-calculator-app .display-panel .display-message {
    min-height: 18px;
    margin-top: 10px;
    color: #c8ccd1;
    font-size: 13px;
    font-weight: 500;
}

.oc-calculator-app .keypad [data-action="clear"] {
    color: #c8372d;
    background: #ffe3df;
    border-color: #f3c3bc;
}

.oc-calculator-app .keypad [data-action="clear"]:hover {
    color: #b92b21;
    background: #ffd4ce;
    border-color: #e8b0a7;
}

.oc-calculator-app .keypad [data-action="clear-entry"],
.oc-calculator-app .keypad [data-action="backspace"] {
    background: #eef1f4;
}

.oc-calculator-app .keypad .operator {
    color: #d43b30;
    background: #fff5f3;
    border-color: #f2d4cf;
}

.oc-calculator-app .keypad .operator:hover {
    color: #bf3027;
    background: #ffeae6;
}

.oc-calculator-app .keypad .equals {
    background: linear-gradient(180deg, #ff5547 0%, #ff4335 100%);
    border-color: #ff4335;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.2);
}

.oc-calculator-app .keypad .equals:hover {
    background: linear-gradient(180deg, #f74a3d 0%, #ea3e32 100%);
    border-color: #ea3e32;
}

@media (max-width: 600px) {
    .oc-calculator-app .display-panel {
        min-height: 154px;
        padding: 16px 16px 18px;
    }
    .oc-calculator-app .display-panel .expression {
        font-size: 15px;
    }
    .oc-calculator-app .display-panel .result {
        font-size: clamp(42px, 13vw, 60px);
    }
}


/* v15: isolate the calculator display from the universal result-box rule */
.oc-calculator-app .display-panel output#result {
    display: block !important;
    width: 100% !important;
    min-height: 0 !important;
    margin: 12px 0 0 !important;
    padding: 0 !important;
    color: #f8fbff !important;
    -webkit-text-fill-color: #f8fbff !important;
    background: transparent !important;
    border: 0 !important;
    border-left: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    text-shadow: 0 2px 12px rgba(0, 0, 0, .28) !important;
    font-size: clamp(52px, 6vw, 76px) !important;
    font-weight: 720 !important;
    line-height: 1 !important;
    letter-spacing: -.035em !important;
    text-align: right !important;
    font-variant-numeric: tabular-nums lining-nums;
}

.oc-calculator-app .display-panel #expression {
    color: #d7dbe0 !important;
    -webkit-text-fill-color: #d7dbe0 !important;
}

.oc-calculator-app .display-panel #displayMessage {
    color: #bfc5cc !important;
    -webkit-text-fill-color: #bfc5cc !important;
}

.oc-calculator-app .display-panel {
    background: linear-gradient(180deg, #202229 0%, #181a20 100%) !important;
    border-color: #30333b !important;
}

@media (max-width: 600px) {
    .oc-calculator-app .display-panel output#result {
        font-size: clamp(42px, 13vw, 60px) !important;
    }
}

/* v19 premium workspace, undo/redo, sessions and expanded business tools */
.oc-calculator-app .state-control:disabled {
    opacity: .42;
    cursor: not-allowed;
    transform: none;
}

.oc-calculator-app .workspace-control.active {
    color: #fff;
    background: var(--oc-accent);
    border-color: var(--oc-accent);
}

.office-workspace {
    padding: 12px 14px 14px;
    background: linear-gradient(180deg, var(--oc-panel), var(--oc-bg));
    border-bottom: 1px solid var(--oc-border);
}

.workspace-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.oc-calculator-app .workspace-tab {
    min-height: 34px;
    padding: 7px 14px;
    font-size: 13px;
}

.oc-calculator-app .workspace-tab.active {
    color: #fff;
    background: var(--oc-accent);
    border-color: var(--oc-accent);
}

.workspace-pane {
    padding: 12px;
    background: var(--oc-bg);
    border: 1px solid var(--oc-border);
    border-radius: 9px;
}

.workspace-pane label {
    display: block;
    margin: 0 0 6px;
    color: var(--oc-text);
    font-size: 13px;
    font-weight: 700;
}

.workspace-pane textarea,
.workspace-pane input {
    width: 100% !important;
    min-height: 42px;
    margin: 0;
    color: var(--oc-text);
    background: var(--oc-key);
    border: 1px solid var(--oc-border);
    border-radius: 8px;
    font: inherit;
}

.workspace-pane textarea { resize: vertical; }
.workspace-status { margin: 7px 0 0; color: var(--oc-muted); font-size: 11px; }
.todo-entry { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px; }
.oc-calculator-app .todo-entry button { min-height: 42px; padding: 8px 14px; color:#fff; background:var(--oc-accent); border-color:var(--oc-accent); }
.todo-list { list-style: none; margin: 10px 0 0; padding: 0; }
.todo-empty { margin: 0; padding: 13px; color: var(--oc-muted); text-align: center; }
.todo-item { display:flex; align-items:center; justify-content:space-between; gap:10px; margin:6px 0; padding:8px 10px; background:var(--oc-panel); border:1px solid var(--oc-border); border-radius:8px; }
.todo-item label { display:flex; align-items:center; gap:9px; margin:0; font-weight:600; }
.todo-item.done span { color:var(--oc-muted); text-decoration:line-through; }
.oc-calculator-app .todo-item button { flex:0 0 30px; width:30px; min-height:30px; padding:0; color:var(--oc-muted); background:transparent; border-color:transparent; font-size:20px; }
.workspace-actions { display:flex; flex-wrap:wrap; gap:7px; margin-top:9px; }
.oc-calculator-app .workspace-actions button { min-height:36px; padding:7px 11px; color:#fff; background:var(--oc-accent); border-color:var(--oc-accent); font-size:12px; }
.oc-calculator-app .workspace-actions .secondary-control { color:var(--oc-text); background:var(--oc-key); border-color:var(--oc-border); }

.business-fields.four-fields { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.business-result[data-state="success"] { padding:9px 10px; color:#155f46; background:#eaf8f2; border:1px solid #a9dec9; border-radius:7px; }
.business-result[data-state="error"] { padding:9px 10px; color:#8f2f2f; background:#fff1f1; border:1px solid #e5b4b4; border-radius:7px; }

.session-manager {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--oc-border);
}

.session-heading { display:flex; align-items:flex-start; justify-content:space-between; gap:8px; margin-bottom:8px; }
.session-heading h3 { margin:0; color:var(--oc-accent); font-size:15px; }
.session-heading span { color:var(--oc-muted); font-size:11px; }
.session-manager > input,
.session-manager > textarea {
    width:100% !important;
    min-height:36px;
    margin:0 0 7px;
    padding:7px 9px;
    color:var(--oc-text);
    background:var(--oc-bg);
    border:1px solid var(--oc-border);
    border-radius:7px;
    font-size:12px;
}
.session-manager > textarea { min-height:54px; resize:vertical; }
.session-primary-actions { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:6px; }
.oc-calculator-app .session-primary-actions button { min-height:34px; padding:6px 7px; color:#fff; background:var(--oc-accent); border-color:var(--oc-accent); font-size:11px; }
.session-list { max-height:280px; margin-top:9px; overflow:auto; scrollbar-width:thin; }
.session-empty { margin:0; padding:14px 8px; color:var(--oc-muted); font-size:12px; text-align:center; }
.session-card { margin:7px 0; padding:9px; background:var(--oc-bg); border:1px solid var(--oc-border); border-radius:8px; }
.session-card.pinned { border-color:#e0b13a; box-shadow:inset 3px 0 0 #e0b13a; }
.session-card-top { display:flex; justify-content:space-between; gap:8px; }
.session-card-top strong { min-width:0; overflow:hidden; color:var(--oc-text); font-size:12px; text-overflow:ellipsis; white-space:nowrap; }
.session-card-top time { flex:0 0 auto; color:var(--oc-muted); font-size:10px; }
.session-value { display:block; margin-top:4px; color:var(--oc-accent); font-size:18px; font-weight:800; }
.session-card small { display:block; margin-top:2px; overflow:hidden; color:var(--oc-muted); font-size:10px; text-overflow:ellipsis; white-space:nowrap; }
.session-card-actions { display:flex; gap:5px; margin-top:7px; }
.oc-calculator-app .session-card-actions button { min-height:27px; padding:4px 7px; font-size:10px; }

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

.oc-calculator-app.is-dark .business-result[data-state="success"] { color:#b9efd7; background:#153c31; border-color:#2d6a57; }
.oc-calculator-app.is-dark .business-result[data-state="error"] { color:#ffd0d0; background:#452727; border-color:#754141; }
.oc-calculator-app.is-dark .workspace-pane,
.oc-calculator-app.is-dark .session-card,
.oc-calculator-app.is-dark .session-manager > input,
.oc-calculator-app.is-dark .session-manager > textarea { background:var(--oc-key); }

@media (max-width: 900px) {
    .business-fields.four-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .status-controls { width:100%; }
}

@media (max-width: 600px) {
    .calculator-topbar .status-controls { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); width:100%; }
    .oc-calculator-app .status-controls .small-control { width:100%; min-width:0; padding:7px 5px; font-size:11px; }
    .todo-entry { grid-template-columns:1fr; }
    .oc-calculator-app .todo-entry button { width:100%; }
    .business-fields.four-fields { grid-template-columns:1fr; }
    .session-primary-actions { grid-template-columns:1fr; }
    .workspace-actions { display:grid; grid-template-columns:1fr; }
    .oc-calculator-app .workspace-actions button { width:100%; }
}

@media print {
    .office-workspace,.session-manager,.state-control,.workspace-control { display:none !important; }
}

/* Keep homepage calculator synchronized with the universal dark theme. */
body.oc-dark .oc-calculator-app {
    --oc-bg: #202124;
    --oc-panel: #292a2d;
    --oc-border: #45474b;
    --oc-text: #f1f3f4;
    --oc-muted: #bdc1c6;
    --oc-key: #303134;
    --oc-key-hover: #3c4043;
}

.history-expression { overflow-wrap:anywhere; color:var(--oc-muted); font-size:12px; }
.history-result { margin-top:3px; overflow-wrap:anywhere; color:var(--oc-text); font-size:15px; font-weight:700; }


/* v22: physical keyboard feedback on the matching on-screen key */
@keyframes ocKeyboardKeyFlash {
    0% { transform: translateY(0) scale(1); filter: brightness(1); }
    35% { transform: translateY(2px) scale(.965); filter: brightness(.92); }
    100% { transform: translateY(0) scale(1); filter: brightness(1); }
}

.oc-calculator-app button.oc-keyboard-pressed {
    animation: ocKeyboardKeyFlash 180ms ease-out !important;
    border-color: #2f80c8 !important;
    box-shadow: 0 0 0 4px rgba(47,128,200,.20), inset 0 2px 5px rgba(16,44,70,.16) !important;
    position: relative;
    z-index: 2;
}

.oc-calculator-app .keypad .operator.oc-keyboard-pressed {
    color: #b92b21 !important;
    background: #ffdcd6 !important;
    border-color: #ef8f84 !important;
    box-shadow: 0 0 0 4px rgba(255,67,53,.18), inset 0 2px 5px rgba(120,25,18,.14) !important;
}

.oc-calculator-app .keypad .equals.oc-keyboard-pressed {
    color: #fff !important;
    background: linear-gradient(180deg,#e63c30 0%,#c92f25 100%) !important;
    border-color: #c92f25 !important;
    box-shadow: 0 0 0 5px rgba(255,67,53,.22), inset 0 2px 6px rgba(80,10,6,.22) !important;
}

.oc-calculator-app .keypad [data-action="clear"].oc-keyboard-pressed {
    color: #a7241b !important;
    background: #ffc9c1 !important;
    border-color: #e58b80 !important;
}

.oc-calculator-app.is-dark button.oc-keyboard-pressed,
body.oc-dark .oc-calculator-app button.oc-keyboard-pressed {
    border-color: #72b8ef !important;
    box-shadow: 0 0 0 4px rgba(114,184,239,.25), inset 0 2px 5px rgba(0,0,0,.28) !important;
}

@media (prefers-reduced-motion: reduce) {
    .oc-calculator-app button.oc-keyboard-pressed { animation: none !important; }
}


/* v24: keep CE and Backspace readable in both global themes */
.oc-calculator-app .keypad [data-action="clear-entry"],
.oc-calculator-app .keypad [data-action="backspace"] {
    color: #30343a !important;
    -webkit-text-fill-color: #30343a !important;
    background: #eef1f4 !important;
    border-color: #d6dbe0 !important;
    font-weight: 700 !important;
}

.oc-calculator-app .keypad [data-action="clear-entry"]:hover,
.oc-calculator-app .keypad [data-action="backspace"]:hover {
    color: #20242a !important;
    -webkit-text-fill-color: #20242a !important;
    background: #e1e6ea !important;
    border-color: #c5cbd1 !important;
}

.oc-calculator-app.is-dark .keypad [data-action="clear-entry"],
.oc-calculator-app.is-dark .keypad [data-action="backspace"],
body.oc-dark .oc-calculator-app .keypad [data-action="clear-entry"],
body.oc-dark .oc-calculator-app .keypad [data-action="backspace"] {
    color: #f1f3f4 !important;
    -webkit-text-fill-color: #f1f3f4 !important;
    background: #34363a !important;
    border-color: #4b4e53 !important;
}

.oc-calculator-app.is-dark .keypad [data-action="clear-entry"]:hover,
.oc-calculator-app.is-dark .keypad [data-action="backspace"]:hover,
body.oc-dark .oc-calculator-app .keypad [data-action="clear-entry"]:hover,
body.oc-dark .oc-calculator-app .keypad [data-action="backspace"]:hover {
    color: #ffffff !important;
    -webkit-text-fill-color: #ffffff !important;
    background: #404348 !important;
    border-color: #60646a !important;
}

.oc-calculator-app .keypad [data-action="clear-entry"].oc-keyboard-pressed,
.oc-calculator-app .keypad [data-action="backspace"].oc-keyboard-pressed {
    color: #173f67 !important;
    -webkit-text-fill-color: #173f67 !important;
    background: #d9eafb !important;
    border-color: #72b8ef !important;
}

.oc-calculator-app.is-dark .keypad [data-action="clear-entry"].oc-keyboard-pressed,
.oc-calculator-app.is-dark .keypad [data-action="backspace"].oc-keyboard-pressed,
body.oc-dark .oc-calculator-app .keypad [data-action="clear-entry"].oc-keyboard-pressed,
body.oc-dark .oc-calculator-app .keypad [data-action="backspace"].oc-keyboard-pressed {
    color: #ffffff !important;
    -webkit-text-fill-color: #ffffff !important;
    background: #245f8f !important;
    border-color: #72b8ef !important;
}