/* learn.css - "Học mới" (#/learn). Uses shared .sess-*, .cta, .opt classes from style.css. */
.lrn-wrap { max-width: 720px; margin: 0 auto; }
.lrn-stage { display: flex; flex-direction: column; flex: 1; outline: none; padding-bottom: 8px; }
.lrn-card { margin-top: .4rem; }
.lrn-kind { display: flex; align-items: center; justify-content: space-between; gap: .6rem; font-size: .9rem; color: var(--muted); font-weight: 600; margin-bottom: .4rem; }
.lrn-face { text-align: center; }
.lrn-card hr { border: 0; border-top: 1px solid var(--line); margin: .6rem 0; }
.lrn-review { margin-top: .6rem; }

.lrn-q { margin-top: .6rem; text-align: center; }
.lrn-q .q-prompt { margin: .4rem 0 .2rem; color: var(--muted); }
.lrn-opts { margin-top: 1rem; }
.lrn-opt { display: flex; align-items: center; gap: .8rem; min-height: 52px; background: var(--card); }
.lrn-n { flex: none; display: inline-grid; place-items: center; width: 1.7rem; height: 1.7rem; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: .85rem; font-weight: 600; }
.lrn-t { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.lrn-opt.right::after, .lrn-opt.wrong::after { margin-left: auto; }
.lrn-fb { min-height: 1.6em; margin: .6rem 0 0; font-weight: 600; }
.lrn-fb.ok { color: var(--good); }
.lrn-fb.bad { color: var(--bad); }

.lrn-bar { display: flex; gap: .6rem; }
.lrn-bar .lrn-prev { flex: none; width: 56px; }
.lrn-bar .lrn-next { flex: 1; }
.lrn-bar.lrn-col { flex-direction: column; }
.lrn-more .lrn-bar { margin-top: .4rem; }

.lrn-done { margin-top: 1.2rem; padding: 2rem 1rem; }
.lrn-done h2 { margin: 0 0 .4rem; }
.lrn-empty { margin-top: 1.2rem; padding: 1.6rem 1rem; }

@media (max-width: 640px) { .lrn-wrap .front-word { font-size: clamp(2.4rem, 14vw, 3.6rem); } }