/* Baskin Logic Play: premium dark UI. Navy / gold / white. Phone-first. */
:root{--bp-navy:#0B1220;--bp-deep:#070C16;--bp-card:#111a2e;--bp-line:rgba(245,245,242,.10);--bp-gold:#C6A15B;--bp-gold2:#E2C68A;--bp-ink:#F5F5F2;--bp-mute:rgba(245,245,242,.66);--bp-ok:#5FC59A;--bp-bad:#E07A6B;--bp-r:18px;--bp-ease:cubic-bezier(.2,.8,.2,1)}
.bp{background:radial-gradient(120% 80% at 50% 0%,#14203a 0%,var(--bp-navy) 55%,var(--bp-deep) 100%);color:var(--bp-ink);font:16px/1.5 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:70vh;padding:20px 16px 96px;-webkit-font-smoothing:antialiased}
.bp *{box-sizing:border-box}.bp a{color:var(--bp-gold2)}
.bp-wrap{max-width:760px;margin:0 auto}
.bp h1,.bp h2,.bp h3{font-family:"Inter Tight",Inter,system-ui,sans-serif;letter-spacing:-.01em;margin:0 0 .4em;line-height:1.15}
.bp h1{font-size:clamp(1.6rem,5vw,2.3rem)}.bp h2{font-size:1.25rem}.bp h3{font-size:1.05rem}
.bp-kick{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--bp-gold);margin:0 0 6px}
.bp-mute{color:var(--bp-mute)}
.bp-card{background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));border:1px solid var(--bp-line);border-radius:var(--bp-r);padding:18px;margin:0 0 14px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.bp-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.bp-between{justify-content:space-between}
.bp-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.bp-btn{appearance:none;border:0;border-radius:14px;padding:14px 18px;font:600 1rem/1 Inter,system-ui,sans-serif;background:var(--bp-gold);color:var(--bp-navy);cursor:pointer;min-height:48px;transition:transform .15s var(--bp-ease),filter .15s;touch-action:manipulation;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.bp-btn:active{transform:scale(.97)}.bp-btn:focus-visible{outline:3px solid var(--bp-gold2);outline-offset:2px}
.bp-btn.ghost{background:transparent;color:var(--bp-ink);border:1px solid var(--bp-line)}.bp-btn.block{width:100%}
.bp-btn[disabled]{opacity:.45;cursor:not-allowed}
.bp-stat{display:flex;flex-direction:column;gap:2px}.bp-stat b{font:700 1.4rem/1 "Inter Tight",Inter,sans-serif}.bp-stat span{font-size:.78rem;color:var(--bp-mute)}
.bp-ring{width:120px;height:120px;flex:none}.bp-ring circle{fill:none;stroke-width:10}.bp-ring .bg{stroke:rgba(255,255,255,.08)}.bp-ring .fg{stroke:var(--bp-gold);stroke-linecap:round;transform:rotate(-90deg);transform-origin:50% 50%;transition:stroke-dashoffset 1.1s var(--bp-ease)}
.bp-ring text{fill:var(--bp-ink);font:700 22px Inter,sans-serif;text-anchor:middle}
.bp-bar{height:10px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}.bp-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--bp-gold),var(--bp-gold2));border-radius:99px;transition:width .8s var(--bp-ease)}
.bp-cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.bp-cal i{aspect-ratio:1;border-radius:8px;background:rgba(255,255,255,.06);display:block}.bp-cal i.on{background:var(--bp-gold)}.bp-cal i.fz{background:#5b7fb8}.bp-cal i.today{outline:2px solid var(--bp-gold2)}
.bp-badge{border-radius:16px;padding:14px;text-align:center;border:1px solid var(--bp-line);background:rgba(255,255,255,.03)}.bp-badge.locked{opacity:.38;filter:grayscale(1)}
.bp-badge .ic{width:54px;height:54px;margin:0 auto 8px;border-radius:50%;display:grid;place-items:center;font:700 1.1rem Inter;border:2px solid currentColor}
.bp-r-common{color:#cfd6e4}.bp-r-rare{color:#7fb0ff}.bp-r-epic{color:#c79bff}.bp-r-legendary{color:var(--bp-gold2)}
.bp-badge small{display:block;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase}
.bp-q{font:600 1.15rem/1.35 "Inter Tight",Inter,sans-serif;margin:8px 0 14px}
.bp-opts{display:grid;gap:10px}.bp-opt{text-align:left;width:100%;padding:16px;border-radius:14px;border:1px solid var(--bp-line);background:rgba(255,255,255,.04);color:var(--bp-ink);font:500 1rem/1.35 Inter,sans-serif;cursor:pointer;min-height:52px;transition:transform .12s var(--bp-ease),background .2s,border-color .2s}
.bp-opt:active{transform:scale(.985)}.bp-opt.ok{border-color:var(--bp-ok);background:rgba(95,197,154,.14)}.bp-opt.bad{border-color:var(--bp-bad);background:rgba(224,122,107,.14);animation:bp-shake .35s}
.bp-explain{margin-top:12px;padding:12px 14px;border-left:3px solid var(--bp-gold);background:rgba(198,161,91,.08);border-radius:0 12px 12px 0;font-size:.95rem}
.bp-combo{font:700 .9rem Inter;color:var(--bp-gold2)}.bp-pop{animation:bp-pop .5s var(--bp-ease)}
.bp-timer{height:6px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}.bp-timer i{display:block;height:100%;background:var(--bp-gold);transform-origin:left;will-change:transform}
.bp-toast{position:fixed;left:50%;bottom:22px;transform:translate(-50%,30px);opacity:0;background:#18233d;border:1px solid var(--bp-gold);color:var(--bp-ink);padding:12px 18px;border-radius:14px;z-index:9999;transition:all .35s var(--bp-ease);font:600 .95rem Inter;box-shadow:0 12px 30px rgba(0,0,0,.4);max-width:92vw}
.bp-toast.show{transform:translate(-50%,0);opacity:1}
.bp-hud{position:fixed;right:12px;bottom:12px;z-index:9998;display:flex;gap:8px;align-items:center;background:rgba(11,18,32,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(198,161,91,.55);color:#F5F5F2;border-radius:99px;padding:8px 14px;font:600 .85rem/1 Inter,system-ui,sans-serif;text-decoration:none;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.bp-hud b{color:#E2C68A}
.bp-tree{display:flex;flex-direction:column;gap:18px}.bp-unit h3{margin-bottom:10px}
.bp-nodes{display:flex;flex-wrap:wrap;gap:10px}.bp-node{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;border:2px solid var(--bp-line);background:rgba(255,255,255,.04);color:var(--bp-ink);text-decoration:none;font:700 .95rem Inter;position:relative;transition:transform .2s var(--bp-ease)}
.bp-node.done{border-color:var(--bp-gold);background:radial-gradient(circle,rgba(198,161,91,.35),rgba(198,161,91,.08))}.bp-node.next{border-color:var(--bp-gold2);animation:bp-glow 2.4s infinite}
.bp-node:active{transform:scale(.94)}
.bp-tbl{width:100%;border-collapse:collapse}.bp-tbl td,.bp-tbl th{padding:10px 6px;border-bottom:1px solid var(--bp-line);text-align:left;font-size:.95rem}.bp-tbl tr.me td{color:var(--bp-gold2);font-weight:700}
.bp-tabs{display:flex;gap:6px;background:rgba(255,255,255,.05);padding:4px;border-radius:14px;margin-bottom:12px}.bp-tabs button{flex:1;border:0;background:transparent;color:var(--bp-mute);padding:10px;border-radius:10px;font:600 .9rem Inter;cursor:pointer;min-height:44px}.bp-tabs button[aria-selected=true]{background:var(--bp-gold);color:var(--bp-navy)}
.bp input[type=text],.bp input[type=email],.bp select{width:100%;padding:14px;border-radius:12px;border:1px solid var(--bp-line);background:rgba(255,255,255,.05);color:var(--bp-ink);font:500 1rem Inter;min-height:48px}
.bp label{display:block;font-size:.85rem;color:var(--bp-mute);margin:10px 0 6px}
.bp-switch{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--bp-line)}
.bp-swipe{position:relative;height:340px;touch-action:pan-y;user-select:none}.bp-swipe .card{position:absolute;inset:0;border-radius:22px;padding:22px;background:linear-gradient(160deg,#18233d,#0e1628);border:1px solid var(--bp-line);display:flex;flex-direction:column;justify-content:center;font-size:1.05rem;will-change:transform;transition:transform .3s var(--bp-ease),opacity .3s}
.bp-chips{display:flex;flex-wrap:wrap;gap:8px}.bp-chip{padding:12px 14px;border-radius:12px;border:1px solid var(--bp-line);background:rgba(255,255,255,.05);color:var(--bp-ink);font:600 .95rem Inter;cursor:pointer;min-height:46px}.bp-chip.sel{border-color:var(--bp-gold);background:rgba(198,161,91,.18)}.bp-chip.used{opacity:.3}
.bp-media{border-radius:16px;background:linear-gradient(135deg,#16213a,#0b1220);border:1px dashed rgba(198,161,91,.5);aspect-ratio:16/9;display:grid;place-items:center;color:var(--bp-mute);font-size:.85rem;text-align:center;padding:12px}
@keyframes bp-shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
@keyframes bp-pop{0%{transform:scale(.6);opacity:0}60%{transform:scale(1.12);opacity:1}100%{transform:scale(1)}}
@keyframes bp-glow{0%,100%{box-shadow:0 0 0 0 rgba(198,161,91,.45)}50%{box-shadow:0 0 0 10px rgba(198,161,91,0)}}
@media (prefers-reduced-motion:reduce){.bp *,.bp-toast,.bp-hud{animation:none!important;transition:none!important}}
@media (min-width:720px){.bp{padding:32px 24px 96px}}
@media print{.bp-hud{display:none}}
/* lesson-embedded scope: same premium dark look, compact */
.bp-scope{background:radial-gradient(120% 90% at 50% 0%,#14203a 0%,var(--bp-navy) 60%,var(--bp-deep) 100%);color:var(--bp-ink);font:16px/1.5 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;border-radius:22px;padding:18px;margin:28px 0;-webkit-font-smoothing:antialiased}
.bp-scope *{box-sizing:border-box}.bp-scope a{color:var(--bp-gold2)}.bp-scope h2,.bp-scope h3{color:var(--bp-ink);font-family:"Inter Tight",Inter,system-ui,sans-serif;margin:0 0 .4em;line-height:1.15}
.bp-scope .bp-card{margin:0}
.bp-table{width:100%;border-collapse:collapse;font-size:.92rem}.bp-table th,.bp-table td{padding:8px 10px;border-bottom:1px solid var(--bp-line);text-align:left;vertical-align:top}.bp-table input{width:100%;min-width:0;background:rgba(255,255,255,.06);border:1px solid var(--bp-line);color:var(--bp-ink);border-radius:10px;padding:8px}
.bp-field{display:block;margin:0 0 12px;font-weight:600;font-size:.9rem;flex:1}.bp-field input,.bp-field textarea,.bp-field select{display:block;width:100%;margin-top:6px;background:rgba(255,255,255,.06);border:1px solid var(--bp-line);color:var(--bp-ink);border-radius:12px;padding:12px;font:inherit;font-weight:400}
.bp-field input:focus-visible,.bp-field textarea:focus-visible,.bp-table input:focus-visible{outline:2px solid var(--bp-gold);outline-offset:2px}
.bp-media{position:relative;display:grid;place-items:center;aspect-ratio:16/9;border-radius:16px;margin:18px 0;background:linear-gradient(135deg,#0f1a30,#0B1220 60%,#1a2440);border:1px dashed rgba(198,161,91,.45);color:rgba(245,245,242,.6);font:600 .85rem Inter,system-ui,sans-serif;text-align:center;padding:12px}
.bp-media[data-media-ratio="9:16"]{aspect-ratio:9/16;max-width:340px;margin-left:auto;margin-right:auto}
.bp-next{border-left:3px solid var(--bp-gold,#C6A15B)}
@media print{.bp-scope,.bp-hud,.bp-media{display:none!important}}