:root {
            --primary: #6366f1;
            --bg-body: #0f172a;
            --text-light: #f8fafc;
        }

        body {
            margin: 0;
            overflow: hidden;
            background-color: var(--bg-body);
            font-family: 'Inter', sans-serif;
            color: var(--text-light);
        }

        #app-wrapper {
            display: flex;
            width: 100vw;
            height: 100vh;
        }

        #stage-container {
            flex: 1;
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
            background: radial-gradient(circle at center, #1e293b 0%, #020617 100%);
        }

        
        /* M7: Themes (applied to #stage-container via class) */
        #stage-container.theme-default {
            background: radial-gradient(circle at center, #1e293b 0%, #020617 100%);
        }
        #stage-container.theme-math {
            background: radial-gradient(circle at center, #0f766e 0%, #052e2b 100%);
        }
        #stage-container.theme-science {
            background: radial-gradient(circle at center, #1d4ed8 0%, #0b1026 100%);
        }
        #stage-container.theme-history {
            background: radial-gradient(circle at center, #7c2d12 0%, #1f130b 100%);
        }
        #stage-container.theme-language {
            background: radial-gradient(circle at center, #7c3aed 0%, #180a2d 100%);
        }
        #stage-container.theme-story {
            background: radial-gradient(circle at center, #111827 0%, #000000 100%);
        }
canvas {
            box-shadow: 0 0 50px rgba(0,0,0,0.5);
            border-radius: 12px;
        }

        .ui-layer {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none;
        }
        /* Stage mood overlay (M6): dims/tints the whole stage for story mode */
        .stage-mood-overlay {
            position: absolute;
            inset: 0;
            z-index: 50;
            pointer-events: none;
            opacity: 0;
            background: #000;
            transition: opacity 0.2s linear;
        }


        
        /* Smartboard DOM overlay (HTML/table/svg/iframe/link content) */
        .smartboard-dom-overlay {
            position: absolute;
            z-index: 6;
            border-radius: 8px;
            overflow: hidden;
            background: rgba(15, 23, 42, 0.98);
            pointer-events: auto;
            box-shadow: 0 10px 30px rgba(0,0,0,0.35);
        }
        .smartboard-dom-overlay.hidden { display: none; }

        .smartboard-dom-overlay .sb-wrap {
            width: 100%;
            height: 100%;
            overflow: auto;
            padding: 10px;
            box-sizing: border-box;
            color: rgba(255,255,255,0.92);
            font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
        
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
.smartboard-dom-overlay .sb-inner {
            width: 100%;
            height: 100%;
            transform-origin: center center;
            flex: 1;
            overflow: auto;
        }

        /* M10: image helper (DOM-based) */
        .smartboard-dom-overlay .sb-imagewrap {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .smartboard-dom-overlay .sb-imagewrap .sb-img {
            max-width: 100%;
            max-height: 100%;
            width: 100%;
            height: 100%;
            object-fit: contain;
            border-radius: 12px;
        }
        .smartboard-dom-overlay .sb-title {
            font-weight: 800;
            font-size: 14px;
            margin: 0 0 8px 0;
            opacity: 0.95;
        }
        .smartboard-dom-overlay .sb-hint {
            font-size: 12px;
            opacity: 0.75;
            margin-top: 8px;
        }
        .smartboard-dom-overlay table.sb-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 12px;
            background: rgba(255,255,255,0.04);
            border-radius: 10px;
            overflow: hidden;
        }
        .smartboard-dom-overlay table.sb-table th,
        .smartboard-dom-overlay table.sb-table td {
            border: 1px solid rgba(255,255,255,0.10);
            padding: 6px 8px;
            text-align: left;
            vertical-align: top;
        }
        .smartboard-dom-overlay table.sb-table th {
            background: rgba(255,255,255,0.06);
            font-weight: 800;
        }
        .smartboard-dom-overlay .sb-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .smartboard-dom-overlay .sb-actions {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .smartboard-dom-overlay .sb-linkbtn {
            display: inline-flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 10px 12px;
            border-radius: 12px;
            border: 1px solid rgba(255,255,255,0.14);
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.92);
            cursor: pointer;
        }

/* --- Smartboard DOM video/audio --- */
.sb-video-box { display:flex; flex-direction:column; gap:10px; }
.sb-video { width:100%; height:240px; background:#000; border-radius:10px; }
.sb-video-controls { display:flex; gap:8px; flex-wrap:wrap; justify-content:center; }
.sb-vbtn { background:#0b1220; color:#fff; border:1px solid rgba(148,163,184,0.45); padding:6px 10px; border-radius:10px; cursor:pointer; font-weight:700; }
.sb-vbtn:hover { background:#111a33; }
.sb-audio-box { display:flex; justify-content:center; }
.sb-audio { width:100%; }


        /* Resource card */
        .sb-card-desc {
            font-size: 13px;
            line-height: 1.4;
            color: rgba(255,255,255,0.9);
            margin-bottom: 6px;
        }
        .sb-card-html {
            padding: 10px;
            border-radius: 12px;
            border: 1px solid rgba(255,255,255,0.10);
            background: rgba(255,255,255,0.04);
            margin-bottom: 10px;
        }
        .sb-res-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .sb-res-item {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 10px;
            padding: 10px 12px;
            border-radius: 14px;
            border: 1px solid rgba(255,255,255,0.12);
            background: rgba(0,0,0,0.18);
        }
        .sb-res-item.is-clickable { cursor: pointer; }

        .sb-res-left { display: flex; flex-direction: column; gap: 4px; }
        .sb-res-label { font-weight: 800; font-size: 13px; }
        .sb-res-sub { font-size: 12px; color: rgba(255,255,255,0.78); }
        .sb-res-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }

        /* Vocab card (Language learning) */
        .sb-vocab {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 12px;
            border-radius: 14px;
            border: 1px solid rgba(255,255,255,0.14);
            background: rgba(255,255,255,0.04);
        }
        .sb-vocab-word {
            font-size: 40px;
            font-weight: 900;
            letter-spacing: 0.2px;
            line-height: 1.05;
        }
        .sb-vocab-sub {
            display: flex;
            flex-direction: column;
            gap: 4px;
            opacity: 0.95;
        }
        .sb-vocab-phon {
            font-size: 18px;
            font-weight: 700;
            opacity: 0.9;
        }
        .sb-vocab-trn {
            font-size: 18px;
            font-weight: 600;
            opacity: 0.9;
        }
        .sb-vocab-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .sb-vocab-ex {
            margin: 0;
            padding-left: 18px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            opacity: 0.95;
        }
        .sb-repeat-countdown {
            margin-top: 4px;
            font-weight: 800;
            opacity: 0.95;
        }

        /* Language drill (M11) */
        .sb-drill-prompt {
            font-size: 22px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .sb-drill-progress {
            font-size: 13px;
            opacity: 0.85;
            margin-bottom: 10px;
        }
        .sb-drill-options {
            display: grid;
            grid-template-columns: 1fr;
            gap: 10px;
            margin: 8px 0 12px 0;
        }
        .sb-drill-option {
            text-align: left;
            padding: 12px 14px;
            border-radius: 14px;
            border: 1px solid rgba(255,255,255,0.16);
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.95);
            cursor: pointer;
            font-weight: 700;
        }
        .sb-drill-option:hover { background: rgba(255,255,255,0.10); }
        .sb-drill-option:disabled { opacity: 0.7; cursor: default; }
        .sb-drill-option.selected { border-color: rgba(255,255,255,0.35); }
        .sb-drill-option.correct { border-color: rgba(34,197,94,0.9); box-shadow: 0 0 0 2px rgba(34,197,94,0.18) inset; }
        .sb-drill-option.wrong { border-color: rgba(239,68,68,0.9); box-shadow: 0 0 0 2px rgba(239,68,68,0.18) inset; }

        /* Milestone 10 Patch A: multiple-choice overlay */
        .sb-choice-question {
            font-size: 18px;
            font-weight: 700;
            margin: 6px 0 10px 0;
        }
        .sb-choice-options {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 4px;
        }
        .sb-choice-feedback {
            margin-top: 12px;
            font-weight: 700;
        }
        .sb-choice-explain {
            margin-top: 6px;
            opacity: 0.92;
        }
        .sb-choice-actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 14px;
        }
        .sb-choice-option {
            text-align: left;
        }
        .sb-choice-option.selected {
            border-color: rgba(255,255,255,0.40);
        }
        .sb-drill-actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }
        .sb-drill-feedback {
            font-size: 16px;
            font-weight: 800;
            margin-top: 6px;
        }
        .sb-drill-explain {
            margin-top: 6px;
            font-size: 14px;
            opacity: 0.9;
        }


        .smartboard-dom-overlay .sb-linkbtn:hover { background: rgba(255,255,255,0.10); }
        .smartboard-dom-overlay iframe.sb-iframe {
            width: 100%;
            height: 100%;
            border: 0;
            border-radius: 10px;
            background: #0b1220;
        }
.controls {
            position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
            display: flex; gap: 15px; pointer-events: auto;
            background: rgba(15, 23, 42, 0.9); padding: 10px 25px; border-radius: 30px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .nav-btn {
            background: none; border: none; color: white; font-size: 1.2rem;
            cursor: pointer; transition: color 0.2s, transform 0.1s;
            width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
        }
        .nav-btn:hover { color: var(--primary); background: rgba(255,255,255,0.1); }
        .nav-btn:active { transform: scale(0.9); }

        

        .toggle-btn {
            background: none; border: none; color: white; font-size: 0.95rem;
            cursor: pointer; transition: color 0.2s, transform 0.1s, background 0.2s;
            height: 40px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center;
            padding: 0 14px; gap: 8px;
            border: 1px solid rgba(255,255,255,0.10);
            background: rgba(255,255,255,0.04);
        }
        .toggle-btn:hover { color: var(--primary); background: rgba(255,255,255,0.10); }
        .toggle-btn:active { transform: scale(0.96); }
        .toggle-btn.active { color: var(--primary); border-color: rgba(99,102,241,0.55); background: rgba(99,102,241,0.14); }
        .toggle-btn i { font-size: 1rem; }
#transcript-box {
            position: absolute; top: 20px; right: 20px; width: 300px; max-height: 300px;
            background: rgba(15, 23, 42, 0.8); border-radius: 8px; padding: 15px;
            overflow-y: auto; font-size: 0.9rem; border: 1px solid rgba(255,255,255,0.1);
            pointer-events: auto;
            transition: height 0.3s ease, opacity 0.3s;
        }
        #transcript-box.minimized {
            height: 40px; overflow: hidden; opacity: 0.8;
        }
        .transcript-header {
            display: flex; justify-content: space-between; align-items: center;
            text-transform: uppercase; font-size: 0.75rem; color: #94a3b8; margin-bottom: 10px;
            cursor: pointer; font-weight: 700; letter-spacing: 1px;
        }
        .transcript-line { margin-bottom: 10px; opacity: 0.7; border-bottom: 1px solid rgba(255,255,255,0.05); padding-bottom: 5px; }
        .transcript-line.active { opacity: 1; color: var(--primary); font-weight: 600; border-left: 3px solid var(--primary); padding-left: 10px; }

        /* RTL support for transcript + smartboard overlay */
        #transcript-box[dir="rtl"]{ direction: rtl; text-align: right; }
        #transcript-box[dir="rtl"] .transcript-line.active{
            border-left: none;
            border-right: 3px solid var(--primary);
            padding-left: 0;
            padding-right: 10px;
        }
        #transcript-box[dir="rtl"] .transcript-line{ text-align: right; }
        #transcript-box[dir="rtl"] strong{ unicode-bidi: plaintext; }
        .smartboard-dom-overlay[dir="rtl"]{ direction: rtl; text-align: right; }
        .smartboard-dom-overlay[dir="rtl"] .sb-title{ text-align: right; }
        .smartboard-dom-overlay[dir="rtl"] .sb-actions{ justify-content: flex-start; }

        
        #debug-log {
            position: absolute; top: 20px; left: 20px; 
            font-family: monospace; font-size: 0.8rem; color: #64748b;
            background: rgba(0,0,0,0.5); padding: 10px; border-radius: 4px;
        }

        /* Start Overlay */
        #start-overlay {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            background: rgba(2, 6, 23, 0.95); z-index: 200;
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            pointer-events: auto;
        }
        .start-btn {
            padding: 15px 40px; font-size: 1.5rem; background: var(--primary); color: white;
            border: none; border-radius: 50px; cursor: pointer; display: flex; align-items: center; gap: 15px;
            box-shadow: 0 0 30px rgba(99, 102, 241, 0.4); transition: transform 0.2s, box-shadow 0.2s;
        }
        .start-btn:hover { transform: scale(1.05); box-shadow: 0 0 50px rgba(99, 102, 241, 0.6); }

        /* Preflight overlay (M16) */
        .preflight-overlay {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 210;
            pointer-events: none;
        }
        .preflight-overlay.hidden { display: none; }
        .preflight-overlay .pf-card {
            width: 320px;
            border-radius: 14px;
            background: rgba(2, 6, 23, 0.85);
            border: 1px solid rgba(148, 163, 184, 0.25);
            box-shadow: 0 14px 40px rgba(0,0,0,0.45);
            padding: 12px 14px;
        }
        .preflight-overlay .pf-title {
            font-weight: 800;
            font-size: 0.95rem;
            margin-bottom: 6px;
        }
        .preflight-overlay .pf-msg {
            font-size: 0.85rem;
            opacity: 0.9;
            margin-bottom: 10px;
            line-height: 1.25;
            white-space: pre-line;
        }
        .preflight-overlay .pf-bar {
            height: 10px;
            background: rgba(148, 163, 184, 0.18);
            border-radius: 999px;
            overflow: hidden;
        }
        .preflight-overlay .pf-bar-inner {
            height: 100%;
            width: 0%;
            background: rgba(99, 102, 241, 0.95);
            border-radius: 999px;
            transition: width 0.15s ease;
        }
    
        /* --- Smartboard Website Modal (M15) --- */
        .website-modal-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.55);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 10000;
        }
        .website-modal-backdrop.show { display: flex; }
        .website-modal {
            width: min(640px, 92vw);
            border-radius: 18px;
            border: 1px solid rgba(255,255,255,0.14);
            background: rgba(15,15,20,0.95);
            color: rgba(255,255,255,0.92);
            box-shadow: 0 18px 70px rgba(0,0,0,0.55);
            padding: 14px;
        }
        .website-modal h3 { margin: 0 0 10px 0; font-size: 16px; }
        .website-row { display: flex; gap: 10px; align-items: center; margin: 10px 0; }
        .website-row input[type="text"]{
            flex: 1;
            padding: 10px 12px;
            border-radius: 12px;
            border: 1px solid rgba(255,255,255,0.14);
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.92);
            outline: none;
        }
        .website-row label { font-size: 13px; opacity: 0.9; display:flex; gap:8px; align-items:center;}
        .website-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; margin-top: 12px; }
        .website-actions .ctrl-btn { padding: 8px 10px; border-radius: 12px; }
        .website-hint { font-size: 12px; opacity: 0.78; line-height: 1.35; }


        /* M17: QA Panel */
        .qa-panel{
            position: fixed;
            right: 16px;
            top: 16px;
            width: min(520px, 92vw);
            max-height: min(70vh, 560px);
            z-index: 9998;
            border-radius: 16px;
            border: 1px solid rgba(255,255,255,0.14);
            background: rgba(15,23,42,0.92);
            box-shadow: 0 22px 80px rgba(0,0,0,0.55);
            backdrop-filter: blur(6px);
            overflow: hidden;
        }
        .qa-panel.hidden{ display:none; }
        .qa-header{
            display:flex;
            align-items:center;
            justify-content:space-between;
            padding:10px 12px;
            border-bottom: 1px solid rgba(255,255,255,0.10);
        }
        .qa-title{ font-weight: 900; letter-spacing: 0.2px; }
        .qa-actions{ display:flex; gap:10px; }
        .qa-body{ padding: 10px 12px; overflow:auto; max-height: calc(70vh - 52px); }
        .qa-summary{ font-size: 13px; font-weight: 800; margin-bottom: 8px; }
        .qa-pre{
            margin:0;
            padding:10px;
            border-radius: 12px;
            border: 1px solid rgba(255,255,255,0.10);
            background: rgba(0,0,0,0.22);
            font-size: 12px;
            line-height: 1.35;
            white-space: pre-wrap;
            word-break: break-word;
        }


        .qa-fixrow{
            display:flex;
            gap:8px;
            flex-wrap:wrap;
            margin:10px 0 8px 0;
        }
        .qa-fixbtn{
            border-radius: 10px;
            padding: 8px 10px;
            border: 1px solid rgba(255,255,255,0.14);
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.92);
            font-weight: 700;
            cursor: pointer;
            font-size: 12px;
        }
        .qa-fixbtn:hover{ background: rgba(255,255,255,0.12); }
        .qa-fixbtn:disabled{ opacity:0.55; cursor:not-allowed; }

/* --- M24: Captions & Accessibility --- */
#captions-box{
    position:absolute;
    left:50%;
    bottom:92px;
    transform:translateX(-50%);
    max-width: min(980px, 92vw);
    padding: 10px 14px;
    border-radius: 12px;
    background: rgba(0,0,0,0.58);
    color: #fff;
    font-size: 16px;
    line-height: 1.35;
    display:none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.25);
    backdrop-filter: blur(4px);
    z-index: 15;
}
#captions-box.active{ display:block; }
#captions-box .cap-speaker{ font-weight: 700; margin-right: 8px; }
#captions-box .cap-text{ font-weight: 500; }
#captions-box[dir="rtl"]{ direction: rtl; text-align: right; }
#captions-box[dir="rtl"] .cap-speaker{ margin-right: 0; margin-left: 8px; }

/* M10: avoid duplicate/oversized legacy live-caption overlays.
   The engine uses #captions-box; legacy live-caption elements are kept but hidden by default. */
#live-caption,
#liveCaption,
#live-caption-box,
.live-caption-box {
  display: none !important;
}

.sb-wrap:focus { outline: 2px solid rgba(255,255,255,0.55); outline-offset: 3px; }
.sb-drill-option:focus, .sb-linkbtn:focus, .qa-fixbtn:focus, .nav-btn:focus, .toggle-btn:focus { outline: 2px solid rgba(255,255,255,0.55); outline-offset: 2px; }


/* ---- Test Lab Panel (Milestone QA) ---- */
.testlab-panel{
  position:absolute;
  top:10px;
  right:10px;
  width:360px;
  max-width:calc(100% - 20px);
  background:rgba(15,23,42,0.88);
  color:#e2e8f0;
  border:1px solid rgba(148,163,184,0.35);
  border-radius:12px;
  box-shadow:0 10px 30px rgba(0,0,0,0.35);
  z-index:9999;
  backdrop-filter: blur(6px);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}
.testlab-header{
  padding:10px 12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  cursor:pointer;
  user-select:none;
  font-weight:700;
  letter-spacing:0.2px;
}
.testlab-header small{ font-weight:600; opacity:0.8; }
.testlab-body{ padding:10px 12px 12px 12px; display:block; }
.testlab-collapsed .testlab-body{ display:none; }
.testlab-row{ display:flex; gap:8px; margin-bottom:8px; }
.testlab-row > *{ flex:1; }
.testlab-panel button{
  background:rgba(59,130,246,0.85);
  color:white;
  border:1px solid rgba(148,163,184,0.25);
  border-radius:8px;
  padding:8px 10px;
  cursor:pointer;
  font-weight:700;
}
.testlab-panel button.secondary{ background:rgba(100,116,139,0.65); }
.testlab-panel button.danger{ background:rgba(239,68,68,0.75); }
.testlab-panel input[type="file"], .testlab-panel select{
  background:rgba(2,6,23,0.45);
  color:#e2e8f0;
  border:1px solid rgba(148,163,184,0.25);
  border-radius:8px;
  padding:8px 10px;
}
#testlab-log{
  background:rgba(2,6,23,0.45);
  border:1px solid rgba(148,163,184,0.2);
  border-radius:8px;
  padding:8px;
  max-height:180px;
  overflow:auto;
  white-space:pre-wrap;
  font-size:12px;
  line-height:1.35;
}


/* Patch: live caption should not cover screen */
#live-caption, .live-caption, #liveCaption, #liveCaptionBox {
  max-width: min(720px, 92vw);
  width: fit-content;
}
#live-caption, #liveCaption {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 12px;
  z-index: 50;
  pointer-events: none;
}
.live-caption-box, #liveCaptionBox {
  padding: 10px 14px;
  border-radius: 12px;
}

/* Generic hidden helper */
.hidden{ display:none !important; }

/* ------------------------------------------------------------
   Milestone 2: System error overlay
   Prevents silent blank screen when deps/boot fail.
------------------------------------------------------------ */
.system-error{
  position:fixed;
  inset:0;
  background:rgba(15,23,42,0.80);
  z-index:999999;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:16px;
}
.system-error-card{
  width:min(820px,96vw);
  max-height:90vh;
  overflow:auto;
  background:rgba(255,255,255,0.96);
  border-radius:14px;
  padding:16px;
  box-shadow:0 16px 50px rgba(0,0,0,0.35);
}
.system-error-title{
  font-weight:800;
  font-size:20px;
  margin-bottom:8px;
  color:#0f172a;
}
.system-error-message{
  color:#334155;
  margin-bottom:12px;
  line-height:1.4;
}
.system-error-actions{
  display:flex;
  gap:10px;
  margin-bottom:12px;
}
.system-error-btn{
  border:0;
  padding:10px 12px;
  border-radius:10px;
  cursor:pointer;
  background:rgba(59,130,246,0.9);
  color:#fff;
  font-weight:700;
}
.system-error-btn.secondary{
  background:rgba(100,116,139,0.75);
}
.system-error-diagnostics{
  background:rgba(15,23,42,0.95);
  color:#e2e8f0;
  padding:12px;
  border-radius:10px;
  font-size:12px;
  white-space:pre-wrap;
}