.gapfill-mode{display:flex;flex-direction:column;gap:.9rem}
.gapfill-mode[hidden]{display:none}
.gapfill-instruction{font-weight:600;color:#64748b}
.gapfill-text{font-size:1.15rem;line-height:2;margin:0}
.gapfill-blank{background:none;color:#4f46e5;font-weight:700;padding:0 .15rem;letter-spacing:.1em}
.gapfill-inputs{display:flex;flex-wrap:wrap;gap:.75rem}
.gapfill-field{display:flex;align-items:center;gap:.4rem;font-weight:600}
.gapfill-input{width:9rem;padding:.45rem .6rem;border:1.5px solid #cbd5e1;border-radius:.55rem;font:inherit;background:#fff;color:inherit}
.gapfill-input:focus{outline:none;border-color:#4f46e5;box-shadow:0 0 0 3px rgba(79,70,229,.15)}
.gapfill-input.gap-correct{border-color:#16a34a;background:#f0fdf4}
.gapfill-input.gap-wrong{border-color:#dc2626;background:#fef2f2}