/* public/css/sat-study.css — SAT study material + quiz runner (uses vd- tokens) */

/* Study hub topic list */
.sat-tlist{display:grid;gap:12px;margin:18px 0}
.sat-trow{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px 18px;text-decoration:none;color:inherit;transition:box-shadow .15s,border-color .15s,transform .12s}
.sat-trow:hover{box-shadow:var(--vd-shadow-sm);border-color:var(--saffron-mid);transform:translateY(-2px)}
.sat-trow__n{width:34px;height:34px;flex:none;border-radius:50%;background:var(--saffron-light);color:var(--saffron-d);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:.9rem}
.sat-trow__main{flex:1;min-width:0}
.sat-trow__name{font-family:var(--font-serif);font-weight:700;color:var(--deep);font-size:1.05rem}
.sat-trow__meta{font-size:.8rem;color:var(--deep-mid);opacity:.8;margin-top:2px}
.sat-trow__badge{font-size:.72rem;font-weight:800;border-radius:50px;padding:4px 10px;white-space:nowrap}
.sat-trow__badge.done{background:#dcfce7;color:#166534}
.sat-trow__badge.todo{background:var(--cream,#fbf8f1);color:var(--deep-mid);border:1px solid var(--border)}

/* Topic study page */
.sat-notes{font-size:1rem;line-height:1.7;color:var(--deep-mid)}
.sat-block{margin:26px 0}
.sat-block__h{font-family:var(--font-serif);font-size:1.25rem;font-weight:700;color:var(--deep);margin:0 0 12px;display:flex;align-items:center;gap:10px}
.sat-solved{background:#fff;border:1px solid var(--border);border-left:4px solid var(--emerald,#00966B);border-radius:12px;padding:14px 18px;margin:12px 0}
.sat-solved .q{font-weight:700;color:var(--deep);margin-bottom:6px}
.sat-solved .s{font-size:.95rem;line-height:1.65;color:var(--deep-mid)}
.sat-solved .s::before{content:'Solution: ';font-weight:700;color:var(--emerald,#00966B)}

/* Unsolved + hint ladder */
.sat-ex{background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px 18px;margin:12px 0}
.sat-ex .q{font-weight:700;color:var(--deep)}
.sat-ex .q::before{content:'Try it: ';color:var(--saffron-d);font-weight:800}
.sat-hints{margin:10px 0 0}
.sat-hint{display:none;font-size:.92rem;line-height:1.6;color:var(--deep-mid);background:var(--saffron-light);border-radius:9px;padding:9px 12px;margin:8px 0}
.sat-hint.show{display:block;animation:satfade .25s ease}
.sat-hint::before{content:'Hint: ';font-weight:800;color:var(--saffron-d)}
.sat-answer{display:none;font-size:.95rem;font-weight:600;color:#166534;background:#dcfce7;border-radius:9px;padding:9px 12px;margin:10px 0 0}
.sat-answer.show{display:block;animation:satfade .25s ease}
.sat-answer::before{content:'Answer: ';font-weight:800}
.sat-btn{display:inline-block;font-family:var(--font-sans);font-size:.84rem;font-weight:700;border-radius:9px;padding:8px 15px;border:1.5px solid var(--saffron);background:#fff;color:var(--saffron-d);cursor:pointer;margin-top:10px;margin-right:8px}
.sat-btn:hover{background:var(--saffron);color:#fff}
.sat-answer-btn{border-color:var(--emerald,#00966B);color:var(--emerald,#00966B);display:none}
.sat-answer-btn:hover{background:var(--emerald,#00966B);color:#fff}
@keyframes satfade{from{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:none}}

/* Quiz runner */
.satq{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px;margin-top:8px}
.satq-load,.satq-empty{padding:30px;text-align:center;color:var(--deep-mid)}
.satq-top{display:flex;justify-content:space-between;font-size:.82rem;color:var(--deep-mid);font-weight:600;margin-bottom:8px}
.satq-diff{text-transform:capitalize;opacity:.7}
.satq-bar{height:6px;background:var(--border);border-radius:3px;overflow:hidden;margin-bottom:16px}
.satq-bar>div{height:100%;background:var(--saffron);transition:width .3s}
.satq-q{font-size:1.05rem;line-height:1.6;color:var(--deep);margin-bottom:16px;font-weight:600}
.satq-opts{display:grid;gap:10px}
.satq-opt{display:flex;gap:12px;align-items:flex-start;text-align:left;border:2px solid var(--border);border-radius:11px;padding:12px 15px;cursor:pointer;font-size:.98rem;background:#fff;color:var(--deep);transition:border-color .12s,background .12s}
.satq-opt:hover{border-color:var(--saffron-mid);background:var(--saffron-light)}
.satq-opt.sel{border-color:var(--saffron);background:var(--saffron-light)}
.satq-lab{font-weight:800;color:var(--saffron-d)}
.satq-nav{display:flex;justify-content:flex-end;margin-top:16px}
.satq-next,.satq-again{background:var(--saffron);color:#fff;border:none;border-radius:10px;padding:11px 24px;font-size:.95rem;font-weight:700;cursor:pointer;font-family:var(--font-sans)}
.satq-next:disabled{background:#ccc;cursor:default}
.satq-next:hover:not(:disabled),.satq-again:hover{background:var(--saffron-d)}
/* results */
.satq-res{text-align:center}
.satq-score{font-family:var(--font-serif);font-size:2.6rem;font-weight:700;color:var(--deep)}
.satq-sub{color:var(--deep-mid);margin-bottom:18px}
.satq-sub a{color:var(--saffron-d);font-weight:700}
.satq-review{text-align:left;display:grid;gap:12px;margin-top:10px}
.satq-ri{border:1px solid var(--border);border-radius:12px;padding:14px 16px;border-left:4px solid #ccc}
.satq-ri.ok{border-left-color:var(--emerald,#00966B)}
.satq-ri.bad{border-left-color:var(--red,#dc2626)}
.satq-ri-h{font-size:.98rem;line-height:1.55;color:var(--deep);margin-bottom:8px}
.satq-ri-o{display:grid;gap:5px;margin-bottom:8px}
.satq-ri-opt{font-size:.9rem;color:var(--deep-mid);padding:5px 9px;border-radius:7px}
.satq-ri-opt.correct{background:#dcfce7;color:#166534;font-weight:600}
.satq-ri-opt.chosen{background:#fee2e2;color:#991b1b}
.satq-ri-opt em{font-style:normal;font-weight:700;font-size:.78rem}
.satq-ri-exp{font-size:.88rem;line-height:1.6;color:var(--deep-mid);background:var(--cream,#fbf8f1);border-radius:8px;padding:9px 12px}
.satq-ri-exp::before{content:'Why: ';font-weight:700;color:var(--deep)}

/* Analytics */
.sat-an-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px;margin:18px 0}
.sat-an-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 18px}
.sat-an-card b{display:block;font-family:var(--font-serif);font-size:1.9rem;color:var(--deep);line-height:1.1}
.sat-an-card span{font-size:.76rem;text-transform:uppercase;letter-spacing:.04em;color:var(--deep-mid);font-weight:700}
.sat-an-tbl{width:100%;border-collapse:collapse;font-size:.9rem;background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.sat-an-tbl th,.sat-an-tbl td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border)}
.sat-an-tbl th{background:var(--saffron-light);color:var(--deep);font-weight:700}
.sat-an-tbl tr:last-child td{border-bottom:none}
.sat-an-pct{font-weight:800}
.sat-an-pct.hi{color:#166534}.sat-an-pct.mid{color:#b45309}.sat-an-pct.lo{color:#991b1b}