/* ملفّات الدروس — تبويب الدرس ومركز الموارد. ألوان v5 (teal-deep/sand/paper). لا منطق مالي. */
.lf-tabs{display:flex;gap:4px;border-bottom:1px solid var(--line,#d9d3c3);margin:0 0 16px}
.lf-tabs button{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border:0;border-bottom:2px solid transparent;background:transparent;color:#3f4654;font:inherit;cursor:pointer}
.lf-tabs button[aria-selected=true]{color:#1B4B57;border-bottom-color:#1B4B57;font-weight:600}
.lf-tabs .lf-n{margin-inline-start:8px;background:#1B4B57;color:#fff;border-radius:10px;padding:0 8px;font-size:.8rem}
.lf-panel[hidden]{display:none}
.lf-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.lf-item{display:flex;align-items:center;gap:12px;border:1px solid #e3dece;border-radius:10px;background:#fff;padding:12px 14px}
.lf-ico{flex:none;width:40px;height:40px;border-radius:8px;display:grid;place-items:center;background:#1B4B57;color:#fff;font-weight:700;font-size:.8rem}
.lf-ico[data-k=exercise]{background:#2E7D4F}.lf-ico[data-k=booklet]{background:#8a5a00}
.lf-meta{flex:1;min-width:0}.lf-meta b{display:block;color:#1b2433}.lf-meta span{color:#4a5160;font-size:.88rem}
.lf-dl{flex:none;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:8px;border:1px solid #1B4B57;color:#1B4B57;text-decoration:none;font-weight:600}
.lf-dl:focus-visible,.lf-tabs button:focus-visible{outline:3px solid #D4A537;outline-offset:2px}
.lf-note{border:1px solid #d9d3c3;background:#F7F5EF;border-radius:8px;padding:10px 14px;margin:0 0 12px;color:#3f4654}
.lf-chip{display:inline-block;border:1px solid #1B4B57;color:#1B4B57;border-radius:10px;padding:0 8px;font-size:.8rem;margin-inline-start:8px}
.lf-empty{color:#4a5160;padding:16px 0}
#lf-center{margin-top:32px}#lf-center h2{color:#1B4B57}
.lf-bar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 0}
.lf-bar button{min-height:44px;padding:0 14px;border-radius:20px;border:1px solid #1B4B57;background:#fff;color:#1B4B57;font:inherit;cursor:pointer}
.lf-bar button[aria-pressed=true]{background:#1B4B57;color:#fff}
.lf-bar input{min-height:44px;padding:0 12px;border:1px solid #c9c2ae;border-radius:8px;font:inherit;flex:1;min-width:160px}
.lf-stage{border:1px solid #e3dece;border-radius:12px;background:#fff;margin:0 0 12px}
.lf-stage>summary{cursor:pointer;padding:14px 16px;font-weight:700;color:#1B4B57;min-height:44px}
.lf-stage-in{padding:0 16px 14px}.lf-course{margin:14px 0 6px;font-weight:600;color:#3f4654}
.lf-bk{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 10px}
@media (max-width:640px){.lf-item{flex-wrap:wrap}.lf-dl{width:100%;justify-content:center}}