/* ============================================================
   G2I Platform App — product UI
   ============================================================ */
:root {
  /* shared (theme-independent) */
  --brand:#ff5e2b; --brand-2:#ff8a3d; --brand-glow:rgba(255,94,43,.45); --gold:#ffd166;
  --green:#3ecf8e; --blue:#5b8cff; --violet:#8a4fcf;
  --s-math:#b3245a; --s-apt:#4ca838; --s-phys:#e23744; --s-chem:#e8821e;
  --s-eng:#4b4be0; --s-geo:#8a3fb0; --s-hist:#18a37e; --s-zoo:#e0a020; --s-bot:#2e9d4f;
  --r-sm:9px; --r:14px; --r-lg:20px; --r-xl:28px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"Plus Jakarta Sans","Inter",system-ui,sans-serif; --display:"Sora",var(--font);
  --sb:248px; --tb:64px;
}
/* ---------- DARK (default) ---------- */
:root, [data-theme="dark"] {
  --bg:#070a11; --bg-2:#0c1019; --bg-3:#121826; --panel:#0f1422;
  --surface:rgba(255,255,255,.04); --surface-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09); --line-2:rgba(255,255,255,.16);
  --text:#eef1f8; --muted:#97a0b5; --muted-2:#646d82;
  --shadow:rgba(0,0,0,.8); --shadow-soft:rgba(0,0,0,.6);
  --page:
    radial-gradient(900px 560px at 85% -8%,rgba(255,94,43,.16),transparent 58%),
    radial-gradient(820px 660px at -8% 12%,rgba(138,79,207,.16),transparent 55%),
    radial-gradient(700px 700px at 50% 120%,rgba(24,163,126,.10),transparent 55%),
    linear-gradient(180deg,#070a11 0%,#0a0e18 50%,#06080e 100%);
  --logo-dark:block; --logo-light:none;
}
/* ---------- LIGHT (warm off-white, gradient) ---------- */
[data-theme="light"] {
  --bg:#f3eefb; --bg-2:#ffffff; --bg-3:#f4eefc; --panel:#ffffff;
  --surface:rgba(70,40,120,.045); --surface-2:rgba(70,40,120,.085);
  --line:rgba(60,40,100,.12); --line-2:rgba(60,40,100,.20);
  --text:#221a33; --muted:#5d566e; --muted-2:#8e8799;
  --shadow:rgba(80,50,140,.28); --shadow-soft:rgba(80,50,140,.18);
  --brand-glow:rgba(255,94,43,.30);
  --page:
    radial-gradient(950px 600px at 84% -6%,rgba(255,138,61,.14),transparent 58%),
    radial-gradient(880px 700px at -8% 12%,rgba(138,79,207,.16),transparent 55%),
    radial-gradient(760px 720px at 55% 118%,rgba(46,157,79,.10),transparent 55%),
    linear-gradient(170deg,#fbf8ff 0%,#f3ecfb 50%,#eee6f8 100%);
  --logo-dark:none; --logo-light:block;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--page) fixed;color:var(--text);-webkit-font-smoothing:antialiased;line-height:1.55;overflow-x:hidden;transition:color .35s var(--ease)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--brand);color:#fff}
h1,h2,h3,h4{font-family:var(--display);letter-spacing:-.02em;line-height:1.12}
.grad{background:linear-gradient(100deg,var(--brand),var(--brand-2) 45%,var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.logo-d{display:var(--logo-dark)} .logo-l{display:var(--logo-light)}

/* scrollbars */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:20px}
::-webkit-scrollbar-track{background:transparent}

/* ---------- Buttons / chips ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.9rem;padding:11px 18px;border-radius:100px;border:1px solid transparent;transition:transform .2s var(--ease),box-shadow .2s,background .2s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(100deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 26px -10px var(--brand-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -10px var(--brand-glow)}
.btn-ghost{background:var(--surface);border-color:var(--line-2);color:var(--text)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-sm{padding:8px 14px;font-size:.82rem}
.btn-block{width:100%;justify-content:center}
.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:100px;font-size:.74rem;font-weight:700;letter-spacing:.02em}
.pill-brand{background:rgba(255,94,43,.12);color:var(--brand-2);border:1px solid rgba(255,94,43,.25)}
.pill-soft{background:var(--surface-2);color:var(--muted);border:1px solid var(--line)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-2)}

/* ---------- Avatars ---------- */
.av{flex:0 0 auto;border-radius:50%;display:grid;place-items:center;font-family:var(--display);font-weight:800;color:#fff;position:relative;overflow:visible}
.av-sm{width:30px;height:30px;font-size:.72rem}
.av-md{width:40px;height:40px;font-size:.85rem}
.av-lg{width:64px;height:64px;font-size:1.3rem}
.av-xl{width:92px;height:92px;font-size:1.9rem}
.av .flag{position:absolute;bottom:-2px;right:-2px;font-size:.8em;background:var(--bg-2);border-radius:50%;line-height:1;padding:1px}

/* ============================================================
   ONBOARDING (auth wizard)
   ============================================================ */
.onb{min-height:100vh;display:grid;place-items:center;padding:32px}
.onb-card{width:100%;max-width:560px;background:linear-gradient(180deg,var(--surface-2),var(--surface));border:1px solid var(--line-2);border-radius:var(--r-xl);padding:clamp(28px,5vw,46px);box-shadow:0 40px 100px -40px #000}
.onb-brand{display:flex;align-items:center;gap:11px;margin-bottom:22px}
.onb-brand img{width:46px;height:46px;object-fit:contain;filter:drop-shadow(0 2px 10px rgba(187,132,232,.45))}
.onb-brand b{font-family:var(--display);font-size:1.2rem;font-weight:800}
.onb-brand span{display:block;font-size:.56rem;letter-spacing:.26em;color:var(--muted)}
.onb-steps{display:flex;gap:8px;margin-bottom:24px}
.onb-steps i{height:5px;flex:1;border-radius:100px;background:var(--line-2);transition:background .4s}
.onb-steps i.on{background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.onb h2{font-size:1.7rem;margin-bottom:6px}
.onb .sub{color:var(--muted);margin-bottom:24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:.78rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:7px}
.field input,.field select{width:100%;padding:13px 15px;border-radius:12px;background:var(--bg-2);border:1px solid var(--line-2);color:var(--text);font-family:var(--font);font-size:.96rem;appearance:none}
.field input:focus,.field select:focus{outline:2px solid var(--brand);border-color:transparent}
.choice-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}
.choice{padding:16px 12px;border-radius:14px;border:1px solid var(--line-2);background:var(--bg-2);text-align:center;transition:.2s var(--ease);cursor:pointer}
.choice:hover{border-color:var(--brand);transform:translateY(-2px)}
.choice.sel{border-color:var(--brand);background:rgba(255,94,43,.1);box-shadow:0 0 0 1px var(--brand) inset}
.choice .e{font-size:1.7rem}
.choice b{display:block;font-family:var(--display);font-size:.9rem;margin-top:6px}
.choice span{font-size:.72rem;color:var(--muted)}
.disc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;max-height:300px;overflow:auto;padding:2px}
.disc-pick{display:flex;align-items:center;gap:9px;padding:11px 12px;border-radius:12px;border:1px solid var(--line-2);background:var(--bg-2);cursor:pointer;transition:.18s}
.disc-pick:hover{border-color:var(--dc)}
.disc-pick.sel{border-color:var(--dc);background:color-mix(in srgb,var(--dc) 14%,transparent)}
.disc-pick .dot{width:11px;height:11px;border-radius:4px;background:var(--dc);flex:0 0 auto}
.disc-pick b{font-size:.84rem;font-family:var(--display)}
.onb-actions{display:flex;justify-content:space-between;align-items:center;margin-top:26px;gap:12px}

/* ============================================================
   APP SHELL
   ============================================================ */
.shell{display:grid;grid-template-columns:var(--sb) 1fr;min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;border-right:1px solid var(--line);background:var(--bg-2);display:flex;flex-direction:column;padding:18px 14px;gap:6px;z-index:40}
.sb-brand{display:flex;align-items:center;gap:10px;padding:6px 8px 16px}
.sb-brand img{width:38px;height:38px;object-fit:contain;filter:drop-shadow(0 2px 8px rgba(187,132,232,.4))}
.sb-brand b{font-family:var(--display);font-weight:800}
.sb-brand span{display:block;font-size:.52rem;letter-spacing:.24em;color:var(--muted)}
.nav-i{display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:12px;color:var(--muted);font-weight:600;font-size:.92rem;transition:.18s}
.nav-i .ic{font-size:1.1rem;width:20px;text-align:center}
.nav-i:hover{background:var(--surface);color:var(--text)}
.nav-i.active{background:linear-gradient(100deg,rgba(255,94,43,.18),rgba(255,138,61,.08));color:var(--text);box-shadow:inset 0 0 0 1px rgba(255,94,43,.25)}
.nav-i .badge{margin-left:auto;background:var(--brand);color:#fff;font-size:.66rem;font-weight:800;padding:1px 7px;border-radius:100px}
.sb-spacer{flex:1}
.sb-user{display:flex;align-items:center;gap:10px;padding:10px;border-radius:14px;border:1px solid var(--line);background:var(--surface);cursor:pointer}
.sb-user .nm{font-size:.84rem;font-weight:700;line-height:1.2}
.sb-user .rk{font-size:.7rem;color:var(--muted)}

.main{min-width:0;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;height:var(--tb);z-index:30;display:flex;align-items:center;gap:16px;padding:0 26px;border-bottom:1px solid var(--line);background:rgba(7,10,17,.78);backdrop-filter:blur(14px)}
.search{flex:1;max-width:420px;display:flex;align-items:center;gap:9px;padding:9px 14px;border-radius:100px;background:var(--surface);border:1px solid var(--line)}
.search input{background:none;border:0;color:var(--text);width:100%;font-family:var(--font);font-size:.88rem;outline:none}
.tb-stat{display:flex;align-items:center;gap:7px;padding:7px 13px;border-radius:100px;background:var(--surface);border:1px solid var(--line);font-weight:700;font-size:.82rem}
.tb-stat .e{font-size:1rem}
.tb-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{width:40px;height:40px;border-radius:12px;background:var(--surface);border:1px solid var(--line);color:var(--text);display:grid;place-items:center;font-size:1.1rem;position:relative}
.icon-btn .dot{position:absolute;top:9px;right:9px;width:7px;height:7px;border-radius:50%;background:var(--brand)}

.view{padding:28px 26px 60px;max-width:1280px;width:100%;margin:0 auto}
.page-head{margin-bottom:24px}
.page-head h1{font-size:clamp(1.6rem,3vw,2.2rem)}
.page-head p{color:var(--muted);margin-top:4px}
.row{display:flex;gap:18px}
.grid{display:grid;gap:18px}
.g-2{grid-template-columns:1fr 1fr}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.span-2{grid-column:span 2}

/* ---------- Cards ---------- */
.card{background:linear-gradient(180deg,var(--surface-2),var(--surface));border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;transition:transform .3s var(--ease),border-color .3s}
.card.hov:hover{transform:translateY(-4px);border-color:var(--line-2)}
.card-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.card-h h3{font-size:1.05rem}
.card-h a{font-size:.8rem;color:var(--brand-2);font-weight:700}
.stat-card{padding:20px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--surface);position:relative;overflow:hidden}
.stat-card .lbl{font-size:.78rem;color:var(--muted);font-weight:600}
.stat-card .val{font-family:var(--display);font-weight:800;font-size:2rem;margin-top:6px}
.stat-card .delta{font-size:.76rem;font-weight:700;color:var(--green)}
.stat-card .gi{position:absolute;right:14px;top:14px;font-size:1.5rem;opacity:.6}

/* ---------- Progress ring ---------- */
.ring{--p:60;--c:var(--brand);width:120px;height:120px;border-radius:50%;display:grid;place-items:center;
  background:conic-gradient(var(--c) calc(var(--p)*1%),var(--line) 0);position:relative}
.ring::before{content:"";position:absolute;inset:9px;border-radius:50%;background:var(--bg-2)}
.ring b{position:relative;font-family:var(--display);font-size:1.5rem;font-weight:800}
.ring small{position:relative;display:block;font-size:.62rem;color:var(--muted);text-align:center}

/* ---------- Bars / progress ---------- */
.bar{height:8px;border-radius:100px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;border-radius:100px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width 1s var(--ease)}

/* ---------- Discipline tiles ---------- */
.disc-tile{border-radius:var(--r-lg);border:1px solid var(--line);background:var(--panel);overflow:hidden;cursor:pointer;transition:.3s var(--ease)}
.disc-tile:hover{transform:translateY(-5px);border-color:var(--dc);box-shadow:0 24px 50px -30px var(--dc)}
.disc-tile .top{height:84px;background:linear-gradient(120deg,var(--dc),color-mix(in srgb,var(--dc) 55%,#000));display:flex;align-items:center;justify-content:space-between;padding:0 18px}
.disc-tile .top .e{font-size:1.9rem}
.disc-tile .top .code{font-family:var(--display);font-weight:800;color:#fff;background:rgba(0,0,0,.2);padding:4px 10px;border-radius:100px;font-size:.78rem}
.disc-tile .bd{padding:16px 18px}
.disc-tile .bd b{font-family:var(--display);font-size:1.05rem}
.disc-tile .bd p{font-size:.82rem;color:var(--muted);margin:3px 0 12px}
.disc-tile .meta{display:flex;justify-content:space-between;font-size:.76rem;color:var(--muted)}

/* ---------- Activity feed ---------- */
.feed{display:flex;flex-direction:column;gap:2px;max-height:360px;overflow:auto}
.feed-i{display:flex;gap:11px;align-items:flex-start;padding:11px 8px;border-radius:12px;transition:.2s}
.feed-i:hover{background:var(--surface)}
.feed-i .tx{font-size:.86rem}
.feed-i .tx b{font-weight:700}
.feed-i .tm{font-size:.72rem;color:var(--muted-2);margin-top:2px}
@keyframes pop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.feed-i.new{animation:pop .5s var(--ease)}

/* ---------- Lesson / module list ---------- */
.mod{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-bottom:14px;background:var(--surface)}
.mod-h{display:flex;align-items:center;gap:12px;padding:15px 18px;cursor:pointer}
.mod-h .mi{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:rgba(255,94,43,.12);border:1px solid rgba(255,94,43,.22)}
.mod-h b{font-family:var(--display)}
.mod-h .meta{font-size:.76rem;color:var(--muted)}
.mod-h .chev{margin-left:auto;color:var(--muted);transition:transform .3s}
.mod.open .chev{transform:rotate(90deg)}
.mod-body{display:none;border-top:1px solid var(--line);padding:6px}
.mod.open .mod-body{display:block}
.lesson{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:11px;transition:.18s}
.lesson:hover{background:var(--surface-2)}
.lesson .lt{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;font-size:.85rem;background:var(--bg-3);border:1px solid var(--line)}
.lesson .ln{font-size:.9rem;font-weight:600}
.lesson .lm{font-size:.74rem;color:var(--muted)}
.lesson.done .ln{color:var(--muted)}
.lesson .chk{margin-left:auto;width:24px;height:24px;border-radius:50%;border:1px solid var(--line-2);display:grid;place-items:center;font-size:.7rem;color:var(--muted-2)}
.lesson.done .chk{background:var(--green);border-color:var(--green);color:#04210f}
.lesson button.go{margin-left:auto}

/* ---------- Lesson player ---------- */
.player{display:grid;grid-template-columns:1fr 300px;gap:22px}
.stage{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;min-height:440px}
.stage .kicker{color:var(--brand-2);font-weight:800;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase}
.stage h2{font-size:1.7rem;margin:8px 0 16px}
.stage p{color:var(--muted);margin-bottom:14px}
.mindmap{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.node{padding:10px 15px;border-radius:100px;border:1px solid var(--line-2);background:var(--surface);font-size:.85rem;font-weight:600}
.node.core{background:linear-gradient(100deg,var(--brand),var(--brand-2));color:#fff;border:0}
.apply-box{border:1px dashed var(--line-2);border-radius:var(--r);padding:18px;background:var(--surface)}
.apply-box .q{font-weight:700;margin-bottom:12px}
.opt{display:flex;align-items:center;gap:11px;padding:12px 14px;border:1px solid var(--line-2);border-radius:12px;margin-bottom:9px;cursor:pointer;transition:.18s}
.opt:hover{border-color:var(--brand)}
.opt.correct{border-color:var(--green);background:rgba(62,207,142,.1)}
.opt.wrong{border-color:var(--s-phys);background:rgba(226,55,68,.1)}
.opt .k{width:26px;height:26px;border-radius:8px;background:var(--bg-3);display:grid;place-items:center;font-weight:700;font-size:.8rem}
.player-side .card{margin-bottom:16px}

/* ---------- Leaderboard ---------- */
.tabs{display:inline-flex;gap:4px;padding:5px;background:var(--surface);border:1px solid var(--line);border-radius:100px;margin-bottom:20px}
.tab{padding:8px 16px;border-radius:100px;font-weight:700;font-size:.84rem;color:var(--muted);border:0;background:none}
.tab.on{background:linear-gradient(100deg,var(--brand),var(--brand-2));color:#fff}
.lb{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.lb-row{display:grid;grid-template-columns:54px 1fr 130px 110px 90px;align-items:center;gap:12px;padding:13px 18px;border-bottom:1px solid var(--line);transition:.18s}
.lb-row:last-child{border-bottom:0}
.lb-row:hover{background:var(--surface)}
.lb-row.you{background:linear-gradient(100deg,rgba(255,94,43,.14),transparent);box-shadow:inset 3px 0 0 var(--brand)}
.lb-row.head{background:var(--bg-3);font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700}
.rank-n{font-family:var(--display);font-weight:800;font-size:1.1rem;text-align:center}
.rank-n.top{color:var(--gold)}
.lb-name{display:flex;align-items:center;gap:11px;font-weight:700;min-width:0}
.lb-name .sub{font-size:.74rem;color:var(--muted);font-weight:500}
.pts{font-family:var(--display);font-weight:800}
.trend{font-size:.8rem;font-weight:700}
.trend.up{color:var(--green)} .trend.dn{color:var(--s-phys)} .trend.fl{color:var(--muted)}

/* ---------- Circles / collaborate ---------- */
.circle-card{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--panel);overflow:hidden;display:flex;flex-direction:column}
.circle-card .cc-top{padding:18px;border-bottom:1px solid var(--line)}
.circle-card .cc-top h3{font-size:1.05rem}
.circle-card .cc-top p{font-size:.82rem;color:var(--muted);margin-top:4px}
.stack{display:flex;align-items:center}
.stack .av{margin-left:-8px;box-shadow:0 0 0 2px var(--bg-2)}
.stack .av:first-child{margin-left:0}
.stack .more{margin-left:-8px;width:30px;height:30px;border-radius:50%;background:var(--bg-3);border:2px solid var(--bg-2);display:grid;place-items:center;font-size:.7rem;font-weight:700;color:var(--muted)}
.cc-foot{margin-top:auto;padding:14px 18px;display:flex;align-items:center;justify-content:space-between}
.live-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(62,207,142,.5);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(62,207,142,.5)}70%{box-shadow:0 0 0 8px rgba(62,207,142,0)}100%{box-shadow:0 0 0 0 rgba(62,207,142,0)}}

/* ---------- Circle room (chat) ---------- */
.room{display:grid;grid-template-columns:1fr 264px;gap:18px;height:calc(100vh - var(--tb) - 88px)}
.chat{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--panel);overflow:hidden}
.chat-head{padding:15px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}
.chat-head h3{font-size:1.05rem}
.chat-body{flex:1;overflow:auto;padding:18px 20px;display:flex;flex-direction:column;gap:14px}
.msg{display:flex;gap:11px;max-width:78%}
.msg .bubble{background:var(--surface-2);border:1px solid var(--line);padding:10px 14px;border-radius:4px 16px 16px 16px;font-size:.9rem}
.msg .who{font-size:.74rem;color:var(--muted);font-weight:700;margin-bottom:3px}
.msg.me{align-self:flex-end;flex-direction:row-reverse}
.msg.me .bubble{background:linear-gradient(100deg,var(--brand),var(--brand-2));color:#fff;border:0;border-radius:16px 4px 16px 16px}
.msg.me .who{text-align:right}
.typing{font-size:.78rem;color:var(--muted);padding:0 20px 8px;height:20px}
.chat-input{display:flex;gap:10px;padding:14px 16px;border-top:1px solid var(--line)}
.chat-input input{flex:1;padding:12px 16px;border-radius:100px;background:var(--bg-2);border:1px solid var(--line-2);color:var(--text);font-family:var(--font);outline:none}
.chat-input input:focus{border-color:var(--brand)}
.room-side{display:flex;flex-direction:column;gap:14px;overflow:auto}
.member{display:flex;align-items:center;gap:10px;padding:9px;border-radius:12px}
.member:hover{background:var(--surface)}
.member .nm{font-size:.85rem;font-weight:600}
.member .st{font-size:.72rem;color:var(--muted)}
.dot-on{width:8px;height:8px;border-radius:50%;background:var(--green)}
.dot-off{width:8px;height:8px;border-radius:50%;background:var(--muted-2)}

/* ---------- Rewards ---------- */
.badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.badge{text-align:center;padding:22px 16px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--surface);transition:.3s var(--ease)}
.badge.locked{opacity:.45;filter:grayscale(.6)}
.badge:not(.locked):hover{transform:translateY(-5px);border-color:var(--gold);box-shadow:0 20px 40px -26px var(--gold)}
.badge .em{font-size:2.6rem}
.badge b{display:block;font-family:var(--display);margin-top:8px;font-size:.95rem}
.badge span{font-size:.76rem;color:var(--muted)}

/* ---------- Profile ---------- */
.prof-hero{display:flex;gap:24px;align-items:center;padding:28px;border-radius:var(--r-xl);border:1px solid var(--line-2);background:linear-gradient(120deg,rgba(255,94,43,.1),rgba(75,75,224,.07))}
.prof-hero h1{font-size:1.8rem}
.prof-stats{display:flex;gap:28px;margin-top:14px;flex-wrap:wrap}
.prof-stats .n{font-family:var(--display);font-weight:800;font-size:1.5rem}
.prof-stats .l{font-size:.74rem;color:var(--muted)}

/* ---------- Toast ---------- */
.toast-wrap{position:fixed;bottom:22px;right:22px;z-index:200;display:flex;flex-direction:column;gap:10px}
.toast{display:flex;align-items:center;gap:12px;background:var(--bg-3);border:1px solid var(--line-2);padding:13px 18px;border-radius:14px;box-shadow:0 20px 40px -16px #000;transform:translateX(140%);transition:transform .5s var(--ease);min-width:280px}
.toast.show{transform:none}
.toast .te{font-size:1.5rem}
.toast b{font-family:var(--display);font-size:.92rem}
.toast span{font-size:.8rem;color:var(--muted)}
.toast.gold{border-color:var(--gold);box-shadow:0 20px 50px -16px rgba(255,209,102,.4)}

/* ---------- misc ---------- */
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.empty .e{font-size:3rem}
.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.muted{color:var(--muted)}.sm{font-size:.84rem}.center{text-align:center}

/* ---------- Mobile ---------- */
.menu-btn{display:none}
@media(max-width:980px){
  :root{--sb:0px}
  .sidebar{position:fixed;left:0;top:0;width:248px;transform:translateX(-100%);transition:transform .3s var(--ease);box-shadow:0 0 60px #000}
  .sidebar.open{transform:none}
  .shell{grid-template-columns:1fr}
  .menu-btn{display:grid}
  .player,.room{grid-template-columns:1fr}
  .room{height:auto}
  .g-4{grid-template-columns:1fr 1fr}
  .g-3{grid-template-columns:1fr}
  .span-2{grid-column:auto}
  .badge-grid{grid-template-columns:1fr 1fr}
  .lb-row{grid-template-columns:40px 1fr 80px;}
  .lb-row .hide-m{display:none}
}
@media(max-width:560px){
  .g-2,.g-4,.badge-grid{grid-template-columns:1fr}
  .choice-grid,.disc-grid{grid-template-columns:1fr 1fr}
  .view{padding:20px 16px 50px}
}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:39;display:none}
.scrim.show{display:block}

/* ============================================================
   THEME TOGGLE
   ============================================================ */
.theme-btn{width:40px;height:40px;border-radius:12px;background:var(--surface);border:1px solid var(--line);color:var(--text);display:grid;place-items:center;font-size:1.05rem;transition:transform .25s var(--ease),background .25s}
.theme-btn:hover{transform:translateY(-2px) rotate(-8deg)}
.theme-btn .sun{display:var(--logo-light)}
.theme-btn .moon{display:var(--logo-dark)}
.onb-brand img.logo-d,.onb-brand img.logo-l,.sb-brand img.logo-d,.sb-brand img.logo-l{width:38px;height:38px;object-fit:contain;filter:drop-shadow(0 2px 8px rgba(138,79,207,.4))}
.onb-brand img.logo-d,.onb-brand img.logo-l{width:46px;height:46px}

/* ============================================================
   SIGN-IN  /  PERSONA SWITCHER
   ============================================================ */
.signin{min-height:100vh;display:grid;place-items:center;padding:32px}
.signin-card{width:100%;max-width:660px;background:linear-gradient(180deg,var(--surface-2),var(--surface));border:1px solid var(--line-2);border-radius:var(--r-xl);padding:clamp(28px,5vw,44px);box-shadow:0 40px 100px -44px var(--shadow)}
.signin-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.signin-brand{display:flex;align-items:center;gap:11px}
.signin-brand img{height:44px;object-fit:contain;filter:drop-shadow(0 2px 10px rgba(138,79,207,.45))}
.signin h2{font-size:1.7rem;margin:18px 0 4px}
.signin .sub{color:var(--muted);margin-bottom:22px}
.persona-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.persona{display:flex;align-items:center;gap:13px;padding:15px;border-radius:16px;border:1px solid var(--line-2);background:var(--surface);cursor:pointer;transition:.2s var(--ease);text-align:left}
.persona:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 18px 34px -20px var(--shadow)}
.persona .nm{font-family:var(--display);font-weight:700;font-size:.98rem;line-height:1.2}
.persona .rl{font-size:.76rem;color:var(--muted);margin-top:2px}
.persona .go{margin-left:auto;color:var(--muted-2);font-size:1.2rem}
.role-chip{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:100px;font-size:.68rem;font-weight:700;letter-spacing:.02em}
.rc-student{background:rgba(255,94,43,.14);color:var(--brand-2)}
.rc-educator{background:rgba(75,75,224,.16);color:#8a8aff}
.rc-parent{background:rgba(138,63,176,.16);color:#c285e8}
.signin-new{margin-top:14px;display:flex;align-items:center;justify-content:center;gap:9px;padding:15px;border-radius:16px;border:1px dashed var(--line-2);background:transparent;color:var(--muted);font-weight:700;cursor:pointer;transition:.2s;width:100%}
.signin-new:hover{border-color:var(--brand);color:var(--text)}

/* educator / parent dashboard bits */
.mentee{display:flex;align-items:center;gap:12px;padding:12px 8px;border-radius:12px;transition:.18s}
.mentee:hover{background:var(--surface)}
.mentee .pr{margin-left:auto;width:120px}
.child-card{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--panel);padding:20px}
.child-card .ch-top{display:flex;align-items:center;gap:13px;margin-bottom:14px}

/* ============================================================
   LIGHT-MODE POLISH
   ============================================================ */
[data-theme="light"] .topbar{background:linear-gradient(180deg,rgba(255,255,255,.88),rgba(248,243,255,.72))}
[data-theme="light"] .sidebar{background:linear-gradient(180deg,#ffffff,#f5f0fd)}
[data-theme="light"] .card:hover{box-shadow:0 24px 46px -30px var(--shadow)}
[data-theme="light"] .disc-tile:hover,[data-theme="light"] .circle-card:hover{box-shadow:0 24px 46px -28px var(--shadow)}
[data-theme="light"] .onb-card,[data-theme="light"] .signin-card{box-shadow:0 40px 90px -50px var(--shadow)}
[data-theme="light"] .scrim{background:rgba(60,40,100,.35)}
[data-theme="light"] .sidebar{box-shadow:none}
[data-theme="light"] .mod,[data-theme="light"] .lb,[data-theme="light"] .chat,[data-theme="light"] .room-side .card{box-shadow:0 10px 26px -22px var(--shadow)}
[data-theme="light"] .msg .bubble{box-shadow:0 4px 12px -8px var(--shadow)}

/* smooth theme cross-fade */
.card,.sidebar,.topbar,.stat-card,.disc-tile,.circle-card,.lb,.mod,.chat,.persona,.signin-card,.onb-card{transition:background .4s var(--ease),border-color .4s var(--ease),color .3s,box-shadow .4s var(--ease)}