.exam-tools-portal{position:fixed;inset:0;z-index:18000;display:grid;place-items:center;background:rgba(15,23,42,.58);padding:20px;overscroll-behavior:contain}
.exam-tools-dialog{box-sizing:border-box;width:min(800px,100%);max-height:calc(100vh - 40px);max-height:calc(100dvh - 40px);overflow:auto;background:#fff;color:var(--al-navy,#153b4e);border:1px solid #cbd5e1;border-radius:20px;box-shadow:0 24px 80px #0f172a55;padding:24px;font-family:inherit;line-height:1.6}
.exam-tools-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}.exam-tools-header h2{margin:0;font-size:1.4rem}.exam-tools-hint{color:#475569;font-size:.9rem;margin:8px 0 16px}.exam-tools-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:12px 0}
.exam-tools-dialog button,.exam-tools-dialog select,.exam-tools-dialog input,.exam-tools-dialog textarea{font:inherit;color:inherit;border:1px solid #94a3b8;border-radius:9px;background:#fff;box-sizing:border-box}.exam-tools-dialog button,.exam-tools-dialog select{min-height:44px;padding:8px 13px}.exam-tools-dialog button{cursor:pointer}.exam-tools-dialog button:hover{background:#eff6ff}.exam-tools-dialog button[aria-pressed=true]{background:var(--al-navy,#153b4e);color:#fff}.exam-tools-dialog :is(button,select,input,textarea):focus-visible{outline:3px solid #2563eb;outline-offset:3px}.exam-tools-dialog label{font-weight:600}.exam-tools-dialog textarea,.exam-tools-dialog input{display:block;width:100%;padding:12px;margin:8px 0 16px}.exam-tools-dialog textarea{resize:vertical;min-height:96px}.exam-tools-canvas{display:block;width:100%;height:320px;background:#fff;border:1px solid #94a3b8;border-radius:10px;touch-action:none;cursor:crosshair;margin:12px 0 18px}.exam-tools-status{color:#9f1239;min-height:1.6em;margin:10px 0 0}.exam-tools-result{display:block;font-size:1.8rem;overflow-wrap:anywhere;margin-top:16px}
@media(max-width:600px){.exam-tools-portal{padding:10px}.exam-tools-dialog{padding:16px;border-radius:14px;max-height:calc(100vh - 20px);max-height:calc(100dvh - 20px)}.exam-tools-canvas{height:260px}.exam-tools-toolbar{gap:6px}.exam-tools-toolbar label{font-size:.85rem}.exam-tools-toolbar button,.exam-tools-toolbar select{padding:7px 10px}}
@media(prefers-reduced-motion:reduce){.exam-tools-portal *{scroll-behavior:auto}}
.exam-tools-keypad{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:12px 0 16px}.exam-tools-keypad button{font-size:1.15rem}