/* CampusNect Digital Academy — colours from the logo: navy #0b1d4f, blue #1f5fe0. */
:root{
  --navy:#0b1d4f;--navy2:#132a6b;--blue:#1f5fe0;--sky:#e8f0ff;--ink:#0f172a;--muted:#5b6478;--line:#e3e8f2;
  --bg:#f6f8fc;--card:#fff;--gold:#f5a524;--green:#16a34a;--red:#dc2626;--r:18px;
  --sh:0 1px 2px rgba(11,29,79,.06),0 8px 24px rgba(11,29,79,.08);
  --f:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--d:"Fraunces",Georgia,serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--f);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
a{color:var(--blue);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.15;margin:0 0 .4em;color:var(--navy)}
h1{font-size:clamp(2rem,4.6vw,3.4rem);letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,2.8vw,2.2rem);letter-spacing:-.01em}
.serif{font-family:var(--d);font-weight:600}
.muted{color:var(--muted)}.small{font-size:.875rem}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}

/* header */
.top{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:18px;height:68px}
.brand img{height:44px;width:auto}
.nav{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav a{padding:8px 12px;border-radius:999px;color:var(--navy);font-weight:600;font-size:.94rem}
.nav a:hover{background:var(--sky)}
.nav .cart{position:relative}
.nav .cart b{position:absolute;top:0;right:0;background:var(--gold);color:#111;font-size:.7rem;border-radius:999px;padding:0 6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;border:0;font:700 .98rem var(--f);cursor:pointer;background:var(--blue);color:#fff;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(31,95,224,.3)}
.btn.navy{background:var(--navy)}.btn.gold{background:var(--gold);color:#1b1300}.btn.ghost{background:#fff;color:var(--navy);border:1.5px solid var(--line)}
.btn.sm{padding:8px 16px;font-size:.88rem}.btn.block{width:100%}
.btn[disabled]{opacity:.5;pointer-events:none}

/* hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 600px at 85% -10%,#2a63e8 0,transparent 60%),linear-gradient(160deg,var(--navy) 0,#0d2462 60%,#0a1a45 100%);color:#fff}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding-top:72px;padding-bottom:84px}
.hero h1{color:#fff}.hero h1 em{font-style:normal;color:#9ec1ff}
.hero p.lead{font-size:1.15rem;color:#d6e2ff;max-width:34em}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 18px}
.hero .trust{display:flex;gap:22px;flex-wrap:wrap;color:#b9ccff;font-size:.9rem}
.hero .trust b{color:#fff;font-size:1.3rem;display:block}
.hero-art{position:relative;aspect-ratio:1/1;width:100%;max-width:470px;margin-left:auto}
.hero-art .glass{position:absolute;inset:6% 4%;border-radius:32px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(6px);transform:rotate(-4deg)}
.hero-art .board{position:absolute;inset:10% 8%;border-radius:26px;background:#fff;color:var(--ink);box-shadow:0 30px 60px rgba(0,0,0,.35);padding:22px;transform:rotate(2deg);display:flex;flex-direction:column;gap:12px}
.board .bar{height:10px;border-radius:9px;background:var(--sky);overflow:hidden}.board .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),#5b8cff);border-radius:9px}
.board .row{display:flex;align-items:center;gap:10px;font-size:.9rem;font-weight:600}
.board .dot{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:.8rem;flex:none}
.board .tick{margin-left:auto;color:var(--green);font-weight:800}
.badge-float{position:absolute;background:#fff;color:var(--navy);border-radius:16px;padding:10px 14px;font-weight:800;font-size:.85rem;box-shadow:0 16px 30px rgba(0,0,0,.3);animation:bob 5s ease-in-out infinite}
.badge-float.a{left:-6%;bottom:16%}.badge-float.b{right:-4%;top:8%;animation-delay:-2s}
@keyframes bob{50%{transform:translateY(-10px)}}
.wave{display:block;width:100%;height:60px;margin-top:-1px;color:var(--bg)}

/* sections */
section.band{padding:72px 0}
.head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.head p{margin:0;max-width:40em}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);padding:22px}
.class-card{position:relative;overflow:hidden;padding:24px;border-radius:22px;color:#fff;min-height:170px;display:flex;flex-direction:column;justify-content:space-between;transition:transform .2s}
.class-card:hover{transform:translateY(-4px)}
.class-card .big{font-family:var(--d);font-size:3.2rem;font-weight:700;line-height:1;opacity:.95}
.class-card small{font-weight:600}
.class-card::after{content:"";position:absolute;right:-30px;bottom:-30px;width:140px;height:140px;border-radius:50%;background:rgba(255,255,255,.12)}
.c1{background:linear-gradient(135deg,#1d4ed8,#2563eb)}.c2{background:linear-gradient(135deg,#0b1d4f,#1e3a8a)}.c3{background:linear-gradient(135deg,#115e59,#0f766e)}
.c4{background:linear-gradient(135deg,#6d28d9,#7c3aed)}.c5{background:linear-gradient(135deg,#92400e,#b45309)}.c6{background:linear-gradient(135deg,#9f1239,#be123c)}
.subj{display:flex;gap:14px;align-items:center;padding:16px;border-radius:16px;background:#fff;border:1px solid var(--line);color:var(--ink);transition:border-color .15s,transform .15s}
.subj:hover{border-color:var(--blue);transform:translateY(-2px)}
.subj .ic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;color:#fff;flex:none}
.subj .ic svg{width:24px;height:24px}
.subj b{display:block;color:var(--navy);line-height:1.25}.subj span{font-size:.82rem;color:var(--muted)}
.steps{counter-reset:s}
.step{position:relative;padding:26px 22px 22px;border-radius:20px;background:#fff;border:1px solid var(--line)}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-16px;left:22px;width:34px;height:34px;border-radius:12px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800}
.step h3{font-size:1.1rem;margin-top:6px}
.price-band{background:linear-gradient(135deg,#fff,#eef4ff);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.price{border-radius:24px;padding:28px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh)}
.price.hot{background:var(--navy);color:#fff;border:0;position:relative}
.price.hot h3,.price.hot .amt{color:#fff}
.price .amt{font-size:2.2rem;font-weight:800;color:var(--navy);letter-spacing:-.02em}
.price s{opacity:.6}
.price .tag{position:absolute;top:-12px;right:22px;background:var(--gold);color:#1b1300;font-weight:800;font-size:.78rem;padding:4px 12px;border-radius:999px}
.price ul{padding-left:18px;margin:12px 0 0}
.tutor{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px}
.avatar{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.6rem;position:relative;flex:none;
  background:radial-gradient(circle at 30% 25%,hsl(var(--h) 85% 65%),hsl(var(--h) 70% 38%));box-shadow:0 8px 20px hsl(var(--h) 60% 40% / .35)}
.avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}
.avatar .v{position:absolute;bottom:-4px;right:-6px;background:#fff;color:var(--navy);font-size:.6rem;font-weight:800;border-radius:999px;padding:2px 7px;border:1px solid var(--line)}
.avatar.sm{width:52px;height:52px;font-size:1.05rem}
.virtual-note{font-size:.8rem;color:var(--muted);margin-top:10px}

/* footer */
footer{background:var(--navy);color:#c8d6ff;padding:48px 0 90px;margin-top:40px}
footer a{color:#fff}footer .grid{grid-template-columns:2fr 1fr 1fr}
footer img{height:56px;background:#fff;border-radius:12px;padding:6px 10px}

/* forms & messages */
.form{max-width:460px;margin:40px auto}
label{display:block;font-weight:700;color:var(--navy);margin:14px 0 6px;font-size:.92rem}
input[type=text],input[type=email],input[type=password],input[type=tel],select,textarea{width:100%;padding:13px 14px;border:1.5px solid var(--line);border-radius:12px;font:16px var(--f);background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(31,95,224,.12)}
.msgs{max-width:1160px;margin:14px auto 0;padding:0 20px}
.msg{padding:12px 16px;border-radius:12px;margin-bottom:8px;font-weight:600}
.msg.success{background:#e8f8ee;color:#14532d}.msg.error{background:#fdecec;color:#7f1d1d}.msg.info,.msg.warning{background:#fff6e0;color:#713f12}

/* class page: tick boxes */
.pick{display:grid;grid-template-columns:1fr 340px;gap:26px;align-items:start}
.opt{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1.5px solid var(--line);border-radius:16px;background:#fff;cursor:pointer;transition:border-color .15s,background .15s;margin-bottom:10px}
.opt:hover{border-color:#b9cdfa}
.opt input{width:22px;height:22px;accent-color:var(--blue);flex:none}
.opt.on{border-color:var(--blue);background:#f3f7ff}
.opt .ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;flex:none}.opt .ic svg{width:20px;height:20px}
.opt .nm{flex:1}.opt .nm b{display:block;color:var(--navy)}.opt .nm small{color:var(--muted)}
.opt .pr{font-weight:800;color:var(--navy);white-space:nowrap}
.opt.owned{opacity:.6;cursor:default}
.summary{position:sticky;top:90px}
.summary .line{display:flex;justify-content:space-between;padding:6px 0}
.summary .tot{font-size:1.6rem;font-weight:800;color:var(--navy);border-top:1px dashed var(--line);margin-top:8px;padding-top:12px}
.pkg-hint{border-radius:14px;padding:12px 14px;font-weight:700;font-size:.9rem;margin:12px 0;background:#fff6e0;color:#713f12}
.pkg-hint.ok{background:#e8f8ee;color:#14532d}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}
.tabs a{padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:700;color:var(--navy)}
.tabs a.on{background:var(--navy);color:#fff;border-color:var(--navy)}

/* learning */
.course-head{background:linear-gradient(135deg,var(--c,#1f5fe0),var(--navy));color:#fff;padding:36px 0 30px}
.course-head h1{color:#fff;font-size:clamp(1.7rem,3.4vw,2.6rem)}
.progress{height:12px;border-radius:9px;background:rgba(255,255,255,.22);overflow:hidden}
.progress i{display:block;height:100%;background:linear-gradient(90deg,#ffd166,var(--gold));border-radius:9px;transition:width .8s}
.progress.light{background:var(--sky)}.progress.light i{background:linear-gradient(90deg,var(--blue),#5b8cff)}
.term{margin:28px 0}
.term > h2{font-size:1.3rem;display:flex;align-items:center;gap:10px}
.term > h2 span{background:var(--sky);color:var(--blue);font-size:.8rem;padding:4px 10px;border-radius:999px}
.topic{background:#fff;border:1px solid var(--line);border-radius:18px;margin-bottom:14px;overflow:hidden}
.topic summary{list-style:none;cursor:pointer;padding:18px 20px;display:flex;gap:14px;align-items:center}
.topic summary::-webkit-details-marker{display:none}
.topic .num{width:38px;height:38px;border-radius:12px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;flex:none}
.topic .num.done{background:var(--green)}
.topic summary b{color:var(--navy);display:block}
.topic ol{list-style:none;margin:0;padding:0 20px 16px}
.topic li a,.topic li .row{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;color:var(--ink)}
.topic li a:hover{background:var(--sky)}
.chk{width:24px;height:24px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;flex:none;font-size:.75rem;font-weight:900;color:#fff}
.chk.on{background:var(--green);border-color:var(--green)}
.aoi-row{background:linear-gradient(90deg,#fff7e6,#fff);border:1px dashed #f5c26b}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.75rem;font-weight:800;background:var(--sky);color:var(--blue)}
.pill.ok{background:#e8f8ee;color:#15803d}.pill.no{background:#fdecec;color:#b91c1c}
.approach{background:#fffaf0;border:1px solid #f3dfb4;border-radius:14px;padding:18px 20px;box-shadow:var(--sh)}

/* lesson */
.lesson-wrap{display:grid;grid-template-columns:1fr 280px;gap:30px;padding:28px 0 60px}
.reader{background:#fff;border:1px solid var(--line);border-radius:22px;padding:clamp(20px,4vw,44px);box-shadow:var(--sh)}
.reader h1{font-size:clamp(1.6rem,3vw,2.3rem)}
.reader h3{margin-top:1.5em;font-size:1.25rem}
.reader p,.reader li{font-size:1.06rem}
.reader table{border-collapse:collapse;width:100%;margin:14px 0;font-size:.96rem}
.reader th,.reader td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
.reader th{background:var(--sky);color:var(--navy)}
.reader blockquote.tip{margin:18px 0;padding:14px 18px;border-radius:14px;background:#fff8e6;border:1px solid #f3dfb4}
.reader blockquote.tip::before{content:"💡 Tip";display:block;font-weight:800;color:#92400e;margin-bottom:4px}
.reader .try{margin:20px 0;padding:18px 20px;border-radius:16px;background:#eef8f1;border:1.5px solid #9fd9b2}
.reader .try > strong:first-child{color:#166534}
.reader .illus{margin:20px 0;padding:16px;border-radius:16px;background:#f7f9ff;border:1px solid var(--line);text-align:center}
.reader .illus svg{max-width:100%;height:auto}
.reader figure{margin:18px 0}.reader figcaption{font-size:.88rem;color:var(--muted);text-align:center}
.side{position:sticky;top:90px;align-self:start;display:flex;flex-direction:column;gap:14px}
.checks{margin-top:34px;border-top:2px dashed var(--line);padding-top:26px}
.checks h2{font-size:1.3rem}
.q{margin:18px 0;padding:18px;border-radius:16px;background:#f8faff;border:1px solid var(--line)}
.q p{font-weight:700;margin:0 0 10px;color:var(--navy)}
.q button.o{display:block;width:100%;text-align:left;padding:11px 14px;margin:7px 0;border-radius:12px;border:1.5px solid var(--line);background:#fff;font:600 .98rem var(--f);cursor:pointer;color:var(--ink)}
.q button.o:hover{border-color:var(--blue)}
.q button.o.right{background:#e8f8ee;border-color:var(--green)}.q button.o.wrong{background:#fdecec;border-color:var(--red)}
.q .why{display:none;margin-top:8px;font-size:.92rem;color:#334155}.q.answered .why{display:block}
.lesson-nav{display:flex;justify-content:space-between;gap:12px;margin-top:28px;flex-wrap:wrap}
.preview-bar{background:var(--gold);color:#1b1300;text-align:center;padding:10px;font-weight:700}

/* activity */
.scenario{background:linear-gradient(135deg,#fff8e6,#fff);border:1.5px solid #f5d38f;border-radius:18px;padding:22px;margin:16px 0 24px}
.scenario h3{color:#92400e}
.task{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;margin-bottom:16px}
.task .tn{font-weight:800;color:var(--blue);font-size:.85rem;letter-spacing:.08em;text-transform:uppercase}
.task label.op{display:flex;gap:10px;align-items:flex-start;font-weight:600;color:var(--ink);padding:10px 12px;border:1.5px solid var(--line);border-radius:12px;margin:8px 0;cursor:pointer}
.task label.op input{margin-top:4px;accent-color:var(--blue)}
.task textarea{min-height:120px}
.score-ring{width:150px;height:150px;border-radius:50%;display:grid;place-items:center;margin:0 auto;background:conic-gradient(var(--ring,#16a34a) calc(var(--p)*1%),#e5e7eb 0)}
.score-ring div{width:118px;height:118px;border-radius:50%;background:#fff;display:grid;place-items:center;font-size:2rem;font-weight:800;color:var(--navy)}
.stars{display:flex;gap:6px;direction:rtl;justify-content:flex-end}
.stars input{display:none}.stars label{font-size:2rem;cursor:pointer;color:#cbd5e1;margin:0}
.stars input:checked ~ label,.stars label:hover,.stars label:hover ~ label{color:var(--gold)}

/* break nudge + celebration */
.nudge{position:fixed;left:50%;bottom:22px;transform:translate(-50%,140%);width:min(440px,calc(100% - 28px));background:#fff;border-radius:20px;box-shadow:0 20px 50px rgba(11,29,79,.3);padding:18px 20px;z-index:80;transition:transform .45s cubic-bezier(.22,1,.36,1);border:1px solid var(--line)}
.nudge.show{transform:translate(-50%,0)}
.nudge b{display:block;color:var(--navy);font-size:1.05rem}
.nudge .acts{display:flex;gap:8px;margin-top:12px}
.celebrate{position:fixed;inset:0;z-index:90;display:none;place-items:center;background:rgba(11,29,79,.55);padding:20px}
.celebrate.show{display:grid}
.celebrate .box{background:#fff;border-radius:26px;padding:34px 28px;text-align:center;max-width:380px;animation:pop .45s cubic-bezier(.22,1,.36,1)}
.celebrate .em{font-size:3.4rem}
@keyframes pop{from{transform:scale(.92);opacity:0}}
canvas#confetti{position:fixed;inset:0;pointer-events:none;z-index:95}

/* office */
table.t{width:100%;border-collapse:collapse;font-size:.93rem}
table.t th,table.t td{padding:10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.t th{color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em}
.stats{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin:18px 0}
.stats div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px}
.stats b{display:block;font-size:1.4rem;color:var(--navy)}

/* bottom tab bar (phone) */
.tabbar{display:none}
@media (max-width:900px){
  .hero .wrap,.pick,.lesson-wrap{grid-template-columns:1fr}
  .hero-art{max-width:360px;margin:0 auto}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .nav a:not(.keep){display:none}
  .summary,.side{position:static}
  .stats{grid-template-columns:repeat(3,1fr)}
  footer .grid{grid-template-columns:1fr}
  .tabbar{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:50;background:#fff;border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:.7rem;font-weight:700;color:var(--muted);padding:4px}
  .tabbar a svg{width:22px;height:22px}
  .tabbar a.on{color:var(--blue)}
  body{padding-bottom:70px}
}
@media (max-width:560px){
  .g3,.g4,.g2{grid-template-columns:1fr}
  .class-grid{grid-template-columns:repeat(2,1fr)!important}
  .brand img{height:36px}
  section.band{padding:52px 0}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}