/* TheCodexes.com · Step 2 CK Flashcards player (v3.2) — extends /styles.css tokens */
.fc{--em-bg:#E6F5EF;--em-bd:#B8E3D3;--amb:#9A6B12;--amb-bg:#FBF5E6;--amb-bd:#E8D3A6}
.fc-hero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(1200px 500px at 85% -10%,rgba(201,242,228,.18),transparent 60%),linear-gradient(160deg,#12A884 0%,var(--emerald-d) 45%,var(--emerald-deep) 100%);padding:clamp(40px,7vw,84px) var(--gut) clamp(36px,6vw,64px)}
.fc-hero .in{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,56px);align-items:center}
.fc-eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;opacity:.92;display:flex;align-items:center;gap:10px}
.fc-eyebrow:before{content:"";width:28px;height:1px;background:currentColor;opacity:.7}
.fc-hero h1{font-family:var(--display);font-weight:400;font-size:clamp(44px,7vw,84px);line-height:.98;margin:18px 0 18px;letter-spacing:-.01em}
.fc-hero h1 i{font-style:italic}
.fc-hero p.lede{font-family:var(--serif);font-size:clamp(17px,1.6vw,19px);line-height:1.55;max-width:560px;opacity:.95;margin:0 0 22px}
.fc-cta{display:flex;flex-wrap:wrap;gap:10px}
.fc-btn{appearance:none;border:0;cursor:pointer;font-family:var(--sans);font-weight:700;font-size:15px;border-radius:999px;padding:13px 22px;display:inline-flex;align-items:center;gap:8px;text-decoration:none;transition:transform .15s var(--ease),box-shadow .15s}
.fc-btn:hover:not(:disabled){transform:translateY(-1px)}.fc-btn:active:not(:disabled){transform:none}.fc-btn:disabled{opacity:.55;cursor:not-allowed}
.fc-btn.pri{background:#fff;color:var(--emerald-dd);box-shadow:0 8px 24px -8px rgba(0,0,0,.35)}
.fc-btn.gold{background:linear-gradient(180deg,#C9A23A,#A8842A);color:#fff;box-shadow:0 8px 24px -10px rgba(120,90,20,.6)}
.fc-btn.ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.35)}
.fc-btn.line{background:#fff;color:var(--ink);border:1px solid var(--line-2)}
.fc-btn.em{background:var(--emerald);color:#fff}
.fc-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.fc-stat{border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);border-radius:16px;padding:16px 18px}
.fc-stat b{display:block;font-family:var(--display);font-weight:400;font-size:clamp(34px,4vw,46px);line-height:1}
.fc-stat span{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;opacity:.9}
.fc-free-note{margin-top:14px;font-size:13px;opacity:.9;font-family:var(--sans)}
.fc-wrap{max-width:1180px;margin:0 auto;padding:0 var(--gut)}
.fc-sec{padding:clamp(34px,5vw,60px) 0}
.fc-h2{font-family:var(--display);font-weight:400;font-size:clamp(32px,4vw,46px);color:var(--ink);margin:0 0 6px;line-height:1.05}
.fc-sub{font-family:var(--serif);color:var(--slate);font-size:17px;margin:0 0 22px;max-width:760px}
.fc-kicker{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--emerald-d);margin-bottom:8px}
/* player */
.fc-launch{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,56px);align-items:center;background:#fff;border:1px solid var(--line);border-radius:24px;padding:clamp(24px,4vw,44px);box-shadow:var(--shadow-lg)}
.fc-launch h3{font:400 clamp(30px,3.2vw,42px)/1.06 var(--display);color:var(--ink);margin:0 0 12px;max-width:560px}
.fc-launch p{font:400 17px/1.55 var(--serif);color:var(--slate);margin:0 0 17px;max-width:600px}
.fc-launch-pills{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 22px}.fc-launch-pills span{font:700 11px var(--mono);letter-spacing:.04em;border:1px solid var(--em-bd);background:#f2faf6;color:var(--emerald-d);padding:8px 10px;border-radius:999px}
.fc-launch-preview{min-height:280px;display:flex;flex-direction:column;justify-content:center;border:1px solid #e2d9c8;border-radius:20px;padding:28px;box-shadow:0 20px 34px -24px rgba(15,34,58,.3);background:linear-gradient(150deg,#fffdf9,#f2eee6)}
.fc-preview-q{font:400 31px/1.12 var(--display);color:var(--ink);margin:10px 0 20px}.fc-preview-rule{height:1px;background:#d9cfbf}.fc-preview-answer{font:400 17px/1.45 var(--serif);color:var(--slate);margin:20px 0}.fc-preview-foot{font:700 10px var(--mono);letter-spacing:.14em;color:var(--emerald-d)}
.fc-launch .fc-btn.line{border-color:var(--em-bd)}.fc-launch .fc-btn.line span{border-radius:999px;background:var(--em-bg);padding:1px 6px}
.fc-study-modal[hidden]{display:none!important}.fc-study-modal{position:fixed;inset:0;z-index:70;background:rgba(8,22,31,.62);-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);display:flex;align-items:center;justify-content:center;padding:clamp(10px,2.5vw,28px)}
.fc-study-shell{width:min(1200px,100%);max-height:min(92vh,980px);max-height:min(92dvh,980px);display:flex;flex-direction:column;background:#fff;border:1px solid rgba(255,255,255,.65);border-radius:24px;box-shadow:0 30px 90px rgba(0,0,0,.34);overflow:hidden}
.fc-study-top{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:19px 24px;border-bottom:1px solid var(--line);background:#fff;flex:none}.fc-study-top .fc-kicker{margin-bottom:2px}.fc-study-top h2{font:400 29px/1.05 var(--display);color:var(--ink);margin:0}.fc-study-top-right{display:flex;align-items:center;gap:20px}.fc-session-line{font:600 12px var(--sans);color:var(--slate);text-align:right}.fc-study-close{width:42px;height:42px;border:1px solid var(--line-2);border-radius:50%;background:#fff;color:var(--ink);font:400 26px var(--sans);cursor:pointer;flex:none}.fc-study-close:hover{background:var(--cream)}
.fc-study-scroll{flex:1;overflow:auto;overscroll-behavior:contain;padding:clamp(16px,2.7vw,30px);background:linear-gradient(180deg,#fcfbf8,#f4f2eb)}
.fc-filter-toggle{display:none}
.fc-reviewing{overflow:hidden}
.fc-player{display:grid;grid-template-columns:minmax(220px,250px) minmax(0,1fr);gap:clamp(16px,2.6vw,28px);align-items:start}
.fc-side{position:sticky;top:0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:var(--shadow)}
.fc-side h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate);margin:4px 0 8px}
.fc-side select{width:100%;padding:10px 12px;border:1px solid var(--line-2);border-radius:10px;background:#fff;font:15px var(--sans);margin-bottom:12px}
.fc-prog{height:6px;background:var(--cream-2);border-radius:99px;overflow:hidden;margin:6px 0 6px}
.fc-prog i{display:block;height:100%;background:var(--emerald);width:0;transition:width .3s var(--ease)}
.fc-small{font-family:var(--sans);font-size:13px;color:var(--slate)}
.fc-keys{margin-top:12px;font-family:var(--mono);font-size:11px;color:var(--slate);line-height:1.9}
.fc-keys kbd{border:1px solid var(--line-2);border-bottom-width:2px;border-radius:5px;padding:0 6px;background:var(--cream);font-family:var(--mono)}
.fc-device-note{font:400 12px/1.45 var(--sans);color:var(--slate);margin:10px 0 0}
.fc-card-wrap{min-width:0}.fc-card-tools{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:0 2px 10px;color:var(--slate);font:600 12px var(--mono)}.fc-card-tools button{border:1px solid var(--line-2);border-radius:999px;background:#fff;color:var(--ink);font:700 12px var(--sans);padding:8px 12px;cursor:pointer}.fc-card-tools button[aria-pressed="true"]{background:#fff7de;border-color:#e0bd62;color:#78540b}
.fc-card{position:relative;background:var(--cream);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-lg);padding:clamp(20px,3vw,34px);min-height:420px;-webkit-user-select:none;user-select:none;overflow:hidden}
.fc-card .wm{position:absolute;inset:-50%;pointer-events:none;opacity:.045;font:600 15px var(--mono);color:var(--ink);transform:rotate(-24deg);white-space:pre;line-height:3.2;letter-spacing:.08em;overflow:hidden}
.fc-eb{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--emerald-d)}
.fc-pill{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;padding:3px 9px;border-radius:999px;background:var(--ink);color:#fff}
.fc-pill.k{background:var(--emerald)}.fc-pill.f{background:var(--gold)}
.fc-q{font-family:var(--serif);font-size:clamp(20px,2.2vw,24px);line-height:1.45;color:var(--ink);margin:16px 0 8px}
.fc-reveal{margin-top:22px;width:100%;justify-content:center}
.fc-back{display:none;margin-top:18px;border-top:1px solid var(--line);padding-top:18px;animation:fcin .25s var(--ease)}
.fc-card.open .fc-back{display:block}.fc-card.open .fc-reveal{display:none}
@keyframes fcin{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.fc-lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:6px}
.fc-box{border-radius:14px;padding:14px 16px;margin:0 0 12px}
.fc-ans{background:var(--em-bg);border:1px solid var(--em-bd);border-left:4px solid var(--emerald)}
.fc-ans .fc-lbl{color:var(--emerald-d)}.fc-ans .a{font-family:var(--serif);font-weight:600;font-size:20px;line-height:1.4;color:var(--ink)}
.fc-why{margin:4px 2px 14px;font-family:var(--serif);font-size:17px;line-height:1.55}.fc-why .fc-lbl{color:var(--slate)}
.fc-watch{background:var(--amb-bg);border:1px solid var(--amb-bd);border-left:4px solid #B8862B;font-family:var(--serif);font-size:16.5px}.fc-watch .fc-lbl{color:var(--amb)}
.fc-tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:6px}
.fc-tile{display:block;text-decoration:none;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 13px;font-family:var(--sans);font-size:13.5px;line-height:1.35}
.fc-tile b{display:block;color:var(--ink);margin-bottom:2px}.fc-tile span{color:var(--slate)}.fc-tile.go{background:#F1FAF6;border-color:var(--em-bd)}.fc-tile.go b{color:var(--emerald-d)}
.fc-rate{display:none;gap:10px;margin-top:16px}.fc-card.open ~ .fc-rate{display:flex}
.fc-rate button{flex:1;border:1px solid var(--line-2);background:#fff;border-radius:14px;padding:12px 8px;cursor:pointer;font:700 14px var(--sans);color:var(--ink)}
.fc-rate button:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.fc-rate button:focus-visible,.fc-study-close:focus-visible,.fc-card-tools button:focus-visible{outline:3px solid var(--emerald);outline-offset:2px}
.fc-rate button small{display:block;font:500 11px var(--mono);color:var(--slate);margin-top:2px;letter-spacing:.06em}
.fc-rate .r1{border-color:#E7B7B2;background:#fff5f4}.fc-rate .r2{border-color:#ead9ad;background:#fffbf1}.fc-rate .r3{border-color:var(--em-bd);background:#f5fbf8}.fc-rate .r4{border-color:#a9d9c8;background:#ecf8f2}
.fc-lic{margin-top:14px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:#9AA1A8}
.fc-end{text-align:center;padding:30px 10px}.fc-end h3{font-family:var(--display);font-weight:400;font-size:36px;margin:6px 0;color:var(--ink)}
/* chapters */
.fc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.fc-ch{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 16px 14px;box-shadow:var(--shadow);cursor:pointer;transition:transform .15s var(--ease),box-shadow .15s;text-align:left;font:inherit;color:inherit}
.fc-ch:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.fc-ch .n{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--emerald-d)}
.fc-ch h3{font-family:var(--serif);font-weight:600;font-size:17px;line-height:1.3;margin:6px 0 10px;color:var(--ink)}
.fc-ch .meta{display:flex;gap:8px;flex-wrap:wrap;font-family:var(--sans);font-size:12.5px;color:var(--slate)}
.fc-ch .meta b{color:var(--ink)}
.fc-lock{display:inline-flex;align-items:center;gap:6px;font:700 11px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--gold);margin-top:10px}
.fc-ch.open-ch{grid-column:1/-1;cursor:default}
.fc-tl{margin-top:12px;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:0 18px}
.fc-tl div{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line);font-family:var(--sans);font-size:13.5px}
.fc-tl div span{color:var(--slate);white-space:nowrap;font-family:var(--mono);font-size:11.5px}
.fc-tl div.hl{background:#FFF8E6}
.fc-blur{margin-top:12px;border-radius:12px;background:repeating-linear-gradient(0deg,var(--cream) 0 18px,#EFEAE0 18px 20px);height:74px;filter:blur(1.5px);position:relative}
/* premium */
.fc-prem{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch}
.fc-feat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 24px;box-shadow:var(--shadow)}
.fc-feat ul{margin:0;padding:0;list-style:none;display:grid;gap:12px;font-family:var(--serif);font-size:16.5px;line-height:1.45}
.fc-feat li{padding-left:28px;position:relative}.fc-feat li:before{content:"✓";position:absolute;left:0;top:0;color:var(--emerald);font-weight:700;font-family:var(--sans)}
.fc-buy{background:#fffefa;color:#162b27;border:1.5px solid #0b4a3d;border-radius:18px;padding:26px;display:flex;flex-direction:column;gap:12px;box-shadow:-4px 4px 0 rgba(22,43,39,.10)}
.fc-buy h3{font-family:var(--display);font-weight:400;font-size:34px;margin:0;line-height:1.05}
.fc-buy p{margin:0;font-family:var(--serif);opacity:.92}
.fc-buy .fine{font-size:12.5px;opacity:.75;font-family:var(--sans)}
/* modal */
.fc-modal{position:fixed;inset:0;background:rgba(6,20,30,.55);display:none;align-items:center;justify-content:center;z-index:80;padding:16px}
.fc-modal.on{display:flex}
.fc-dlg{background:#fff;border-radius:20px;max-width:440px;width:100%;padding:24px;box-shadow:var(--shadow-lg)}
.fc-dlg h3{font-family:var(--display);font-weight:400;font-size:30px;margin:0 0 6px;color:var(--ink)}
.fc-dlg input{width:100%;padding:12px 14px;border:1px solid var(--line-2);border-radius:12px;font:15px var(--sans);margin:6px 0 10px}
.fc-dlg .err{color:#B3261E;font:13px var(--sans);min-height:18px}
.fc-toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:999px;font:600 13px var(--sans);opacity:0;transition:opacity .2s;z-index:90;pointer-events:none}
.fc-toast.on{opacity:1}
@media (max-width:900px){.fc-hero .in,.fc-prem,.fc-player,.fc-launch{grid-template-columns:1fr}.fc-side{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 12px}.fc-side .fc-prog,.fc-side #progTxt,.fc-side>div:last-of-type,.fc-keys,.fc-device-note{grid-column:1/-1}.fc-launch-preview{min-height:210px}}
@media (max-width:600px){.fc-study-modal{padding:0}.fc-study-shell{max-height:100dvh;height:100dvh;border-radius:0}.fc-study-top{padding:13px 16px}.fc-study-top h2{font-size:24px}.fc-session-line{display:none}.fc-study-scroll{padding:14px}.fc-filter-toggle{display:flex;justify-content:space-between;align-items:center;width:100%;margin:0 0 12px;border:1px solid var(--line-2);border-radius:12px;background:#fff;color:var(--ink);padding:10px 13px;font:700 13px var(--sans);cursor:pointer}.fc-filter-toggle span{font-size:17px}.fc-side{display:none;padding:12px}.fc-study-scroll.filters-open .fc-side{display:grid}.fc-side h4{font-size:9.5px}.fc-side select{font-size:13px;padding:8px}.fc-tiles{grid-template-columns:1fr}.fc-card{min-height:340px;border-radius:18px}.fc-rate{gap:6px}.fc-rate button{font-size:12px;padding:9px 2px}.fc-rate button small{font-size:9px}.fc-launch{padding:22px}.fc-launch-preview{display:none}}
@media (prefers-reduced-motion:reduce){.fc-btn,.fc-rate button,.fc-card.open .fc-back{animation:none;transition:none}}
@media print{body{display:none!important}}