/* Flashcards pages: look of the dashboard, the card and the rating buttons.
   Loaded AFTER /assets/css/trap-map.css, which provides the tokens (light by
   default, dark on the Theme button), the top bar, buttons, the key-dialog box
   and the exam tags. Used with /assets/js/flashcards.js. */


/* ============ layout ============ */
.wrap.narrow{max-width:760px;padding-bottom:80px}
.fc-h{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin:22px 0 8px}
.fc-note{color:var(--ink-2);margin:12px 0 0;font-size:15px}
button:disabled{opacity:.5;cursor:not-allowed}


/* ============ dashboard ============ */
.fc-today{border:1px solid var(--rule);border-radius:14px;background:var(--surface);padding:20px;box-shadow:var(--shadow);margin:0 0 34px}
.fc-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.fc-kpi{border:1px solid var(--rule);border-radius:10px;background:var(--surface-2);padding:10px 8px;text-align:center;min-width:0}
.fc-kpi b{display:block;font-family:var(--display);font-weight:400;font-size:clamp(26px,7vw,36px);line-height:1.1;color:var(--brand)}
.fc-kpi span{display:block;font-size:12.5px;color:var(--ink-2)}
.fc-done{grid-template-columns:repeat(2,1fr);max-width:360px;margin:22px 0}
.fc-streak{margin:12px 0 0;color:var(--ink-2);font-size:15px}
.fc-streak b{color:var(--ink)}
.fc-chips{display:flex;flex-wrap:wrap;gap:8px}
.fc-chip{font-family:var(--mono);font-size:12.5px;letter-spacing:.03em;min-height:44px;padding:0 14px;border-radius:999px;border:1px solid var(--rule);background:var(--surface);color:var(--ink-2);cursor:pointer}
.fc-chip:hover:not(:disabled){border-color:var(--brand);color:var(--brand)}
.fc-chip[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:var(--btn-ink)}
.fc-chip.off{border-style:dashed}
.fc-go{margin-top:20px}
.fc-go .btn{border:1px solid var(--brand)}
.fc-link{background:none;border:0;padding:10px 0;min-height:44px;color:var(--ink-2);font-size:14px;text-decoration:underline;cursor:pointer}
.fc-link:hover{color:var(--brand)}
.fc-reset{margin:26px 0 0}


/* ============ sections list ============ */
.fc-secs{display:grid;gap:12px;margin:0 0 26px}
.fc-sec{border:1px solid var(--rule);border-radius:12px;background:var(--surface);padding:14px 16px;box-shadow:var(--shadow)}
.fc-sec-h{display:flex;gap:12px;align-items:flex-start}
.fc-sec-h h3{font-size:22px;line-height:1.15}
.fc-sec-h p{margin:2px 0 0;color:var(--ink-3);font-size:13.5px}
.fc-num{flex:none;width:32px;height:32px;border-radius:8px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-weight:700}
.fc-stats{display:flex;flex-wrap:wrap;gap:4px 16px;list-style:none;margin:10px 0 8px;padding:0;color:var(--ink-2);font-size:14px}
.fc-stats b{color:var(--ink)}
.fc-bar{height:6px;border-radius:99px;background:var(--surface-2);overflow:hidden}
.fc-bar i{display:block;height:100%;background:var(--brand);border-radius:99px;transition:width .3s}
.fc-locked{border-left:3px solid var(--accent)}
.fc-lock{margin:8px 0 0;color:var(--ink-2);font-size:14.5px}
.fc-unlock{margin-top:26px}


/* ============ study session ============ */
.fc-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.fc-left{font-family:var(--mono);font-size:12px;color:var(--ink-3)}
.fc-prog{margin:2px 0 16px}
.fc-card{position:relative;border:1px solid var(--rule-2);border-radius:16px;background:var(--surface);box-shadow:var(--shadow);padding:22px 20px 18px;min-height:300px;cursor:pointer;display:flex;flex-direction:column;overflow-wrap:anywhere}
.fc-card.flipped{cursor:default;border-color:var(--brand)}
.fc-path{margin:0;font-family:var(--mono);font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3)}
.fc-ask{margin:12px 0 6px;font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--brand)}
.fc-term{margin:0;font-family:var(--display);font-size:clamp(30px,8vw,44px);line-height:1.1}
.fc-def{margin:0;font-size:18px;line-height:1.5}
.fc-front{flex:none}
.fc-back{margin-top:16px;padding-top:16px;border-top:1px dashed var(--rule-2);animation:fcIn .22s ease-out}
.fc-back[hidden]{display:none}
.fc-block{margin-top:14px;border-radius:10px;padding:10px 12px;background:var(--surface-2)}
.fc-block h4{margin:0 0 3px;font-family:var(--mono);font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--accent)}
.fc-block p{margin:0;font-size:15px;color:var(--ink-2)}
.fc-hint{margin:auto 0 0;padding-top:18px;text-align:center;color:var(--ink-3);font-size:13.5px}
.fc-hint[hidden]{display:none}
@keyframes fcIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.fc-back{animation:none}.fc-bar i{transition:none}}

.fc-rate{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px}
.fc-rate[hidden]{display:none}
.fc-r{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:62px;padding:8px 6px;border-radius:12px;border:1.5px solid var(--rule-2);background:var(--surface);cursor:pointer;text-align:center}
.fc-r b{font-size:15px}
.fc-r small{font-family:var(--mono);font-size:10.5px;color:var(--ink-3)}
.fc-r1{border-color:var(--bad);color:var(--bad)}
.fc-r2{border-color:var(--accent);color:var(--accent)}
.fc-r3{border-color:var(--good);color:var(--good)}
.fc-r:hover{background:var(--surface-2)}
@media(max-width:380px){.fc-r b{font-size:13.5px}.fc-kpi span{font-size:11.5px}}

/* ---------- Keyboard hint ("press 1"): useless on a touch screen, so hidden there ---------- */
@media (hover:none),(pointer:coarse){.fc-kh{display:none}}

/* ---------- Study more / free review buttons ---------- */
.fc-more{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.fc-more .btn{border:1px solid var(--brand)}
.fc-small{font-size:13.5px;margin-top:8px}

/* ---------- Browse my cards (read-only list) ---------- */
.fc-browse .fc-chips{margin-top:12px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.fc-search{display:block;margin-top:14px}
.fc-search input{width:100%;min-height:46px;padding:0 14px;border-radius:12px;border:1px solid var(--rule);background:var(--surface);color:var(--ink);font:inherit;font-size:16px}
.fc-search input:focus{outline:2px solid var(--brand);outline-offset:1px}
.fc-list{margin-top:10px;display:grid;gap:8px}
.fc-item{border:1px solid var(--rule);border-radius:12px;background:var(--surface);padding:0 14px}
.fc-item summary{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:48px;cursor:pointer;list-style:none;font-weight:600;color:var(--ink)}
.fc-item summary::-webkit-details-marker{display:none}
.fc-item[open]{border-color:var(--brand)}
.fc-it-n{flex:1;min-width:0}
.fc-it-d{margin:0 0 4px;color:var(--ink-2);font-size:15.5px}
.fc-item .fc-block:last-child{margin-bottom:14px}
.fc-tag{flex:none;font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:999px;border:1px solid var(--rule);color:var(--ink-2)}
.fc-tag-due{border-color:#b45309;color:#b45309}
.fc-tag-mastered{border-color:#15803d;color:#15803d}
.fc-tag-learning{border-color:var(--brand);color:var(--brand)}

/* ---------- Dashboard: one main button, quiet extras, options folded ---------- */
.fc-more{align-items:center}
.fc-more .fc-link{font-size:15px;min-height:44px;text-align:left}
.fc-opts{margin-top:18px;border-top:1px solid var(--rule);padding-top:4px}
.fc-opts summary{cursor:pointer;min-height:44px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-family:var(--mono);font-size:12.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-2)}
.fc-opts summary span{text-transform:none;letter-spacing:0;font-family:inherit;font-size:14.5px;color:var(--brand)}

/* ---------- Back link at the top of the term list ---------- */
.fc-backtop{display:inline-block;margin:4px 0 8px;font-size:15px;text-decoration:none;color:var(--brand)}
.fc-backtop:hover{text-decoration:underline}

/* ---------- One-line help under each option title ---------- */
.fc-opts .fc-small{margin:-2px 0 10px}

/* ---------- How it works: open until the first session is done, then a small link ---------- */
.fc-how{margin:4px 0 16px}
.fc-how summary{display:inline-flex;align-items:center;min-height:44px;cursor:pointer;color:var(--brand);font-size:15px;text-decoration:underline}
.fc-how[open] summary{text-decoration:none;font-family:var(--mono);font-size:12px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-3)}
.fc-how ol{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;counter-reset:how}
.fc-how li{counter-increment:how;position:relative;padding:12px 12px 12px 46px;border:1px solid var(--rule);border-radius:12px;background:var(--surface);font-size:14.5px;color:var(--ink-2);line-height:1.45}
.fc-how li::before{content:counter(how);position:absolute;left:12px;top:12px;width:24px;height:24px;border-radius:50%;background:var(--brand);color:var(--btn-ink);font:600 13px/24px var(--mono);text-align:center}
.fc-how li b{display:block;color:var(--ink);margin-bottom:2px}
@media(max-width:640px){.fc-how ol{grid-template-columns:1fr}}