@font-face{font-family:'SVN-Gilroy';font-weight:400 500;src:url(../fonts/gilroy-500.otf) format('opentype');font-display:swap}
@font-face{font-family:'SVN-Gilroy';font-weight:600;src:url(../fonts/gilroy-600.otf) format('opentype');font-display:swap}
@font-face{font-family:'SVN-Gilroy';font-weight:700;src:url(../fonts/gilroy-700.otf) format('opentype');font-display:swap}
@font-face{font-family:'SVN-Gilroy';font-weight:800;src:url(../fonts/gilroy-800.otf) format('opentype');font-display:swap}
@font-face{font-family:'Big Shoulders';font-weight:100 900;src:url(../fonts/bigshoulders.ttf) format('truetype');font-display:swap}
/* Màu: --ink chữ, --card nền thẻ, --surf mảng tối (đầu trang, menu), --pri nút chính, --lime chỉ dùng cho tiến độ và việc đã xong */
:root{--bg:#F0F0F0;--card:#FFFFFF;--ink:#121212;--line:#DADADA;--mut:#595959;--soft:#EDEDED;--track:#E2E2E2;--lime:#D7F24A;--onlime:#121212;--surf:#121212;--onsurf:#FFFFFF;--surfmut:#BDBDBD;--surf2:#1F1F1F;--surfline:#3A3A3A;--pri:#121212;--onpri:#FFFFFF;--head:#F6F6F6;--h:44px;--z:1}
html.dark{--bg:#0D0D0D;--card:#1A1A1A;--ink:#F2F2F2;--line:#343434;--mut:#A9A9A9;--soft:#262626;--track:#333333;--surf:#1A1A1A;--surf2:#262626;--surfline:#3A3A3A;--pri:#F2F2F2;--onpri:#121212;--head:#222222;color-scheme:dark}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:'SVN-Gilroy',system-ui,sans-serif;font-size:14px;font-weight:600;-webkit-tap-highlight-color:transparent}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,p{margin:0}
.bs{font-family:'Big Shoulders','SVN-Gilroy',sans-serif;font-weight:800;line-height:1}
.mut{color:var(--mut);font-size:12px}
:focus-visible{outline:2px solid var(--onsurf);outline-offset:0;box-shadow:0 0 0 4px var(--ink)}
html.dark :focus-visible{outline-color:#121212;box-shadow:0 0 0 4px var(--lime)}

/* khung */
.app{min-height:calc(100vh / var(--z));display:flex}
.side{display:none}
.main{flex:1;min-width:0;padding-bottom:calc(96px + env(safe-area-inset-bottom))}
.head{background:var(--surf);color:var(--onsurf);padding:calc(18px + env(safe-area-inset-top)) 20px 18px;border-radius:0 0 28px 28px;display:flex;flex-direction:column;gap:4px}
.head .row{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;color:var(--surfmut)}
.head h1{font-size:32px}
.head p{color:var(--surfmut)}
.hbtns{display:flex;align-items:center;gap:8px}
.icb{width:44px;height:44px;border-radius:50%;border:1.5px solid var(--surfline);background:var(--surf2);color:var(--onsurf);display:inline-flex;align-items:center;justify-content:center;flex:none}
.icb:hover{border-color:var(--onsurf)}
.lvl{display:flex;align-items:center;gap:8px;min-height:44px;padding:3px 14px 3px 3px;background:var(--surf2);border:1.5px solid var(--surfline);border-radius:999px;color:var(--onsurf);text-align:left}
.lvl:hover{border-color:var(--onsurf)}
.lvl b{font-size:12px}.lvl em{font-style:normal;color:var(--lime)}
.xpbar{display:block;width:84px;height:5px;background:var(--surfline);border-radius:999px;margin-top:4px;overflow:hidden}
.xpbar i{display:block;height:100%;background:var(--lime);border-radius:999px;transition:width .7s cubic-bezier(.2,.9,.3,1.15)}
.wrap{padding:14px 16px 0;display:flex;flex-direction:column;gap:16px}
.wrap.enter{animation:enter .28s ease-out}
@keyframes enter{from{opacity:0;transform:translateY(8px)}}
.nav{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));background:var(--surf);border:1.5px solid var(--surfline);border-radius:22px;padding:6px;display:flex;gap:2px;z-index:30}
.nav button{flex:1;min-height:52px;border:none;border-radius:16px;background:transparent;color:var(--onsurf);font-size:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:0 2px}
.nav button:hover{background:var(--surf2)}
.nav button.on{background:var(--onsurf);color:var(--surf);font-weight:800}

/* thẻ và lưới */
.card{background:var(--card);border:1.5px solid var(--line);border-radius:20px;padding:16px;display:flex;flex-direction:column;gap:12px}
.card.hero{border-color:var(--ink)}
.between{display:flex;justify-content:space-between;align-items:flex-end;gap:8px}
.base{align-items:baseline}
.big{font-size:44px}.mid{font-size:30px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;align-items:start}
.mas{columns:300px;column-gap:16px}
.mas>*{break-inside:avoid;margin-bottom:16px}
.sec{display:flex;flex-direction:column;gap:8px}
.sec h2{font-size:24px}
.rowwrap{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.box{background:var(--soft);border-radius:14px;padding:12px 14px;display:flex;flex-direction:column;gap:2px}
.box small{font-size:12px;font-weight:700}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
.stat{background:var(--card);border:1.5px solid var(--line);border-radius:16px;padding:12px 14px;display:flex;flex-direction:column;gap:2px}
.stat.hi{background:var(--pri);border-color:var(--pri);color:var(--onpri)}
.stat.hi .mut{color:inherit;opacity:.8}
.stat b{font-family:'Big Shoulders',sans-serif;font-size:28px;line-height:1.05}

/* điểm tuần */
.track{position:relative;height:14px;background:var(--track);border-radius:999px}
.track .fill{position:absolute;left:0;top:0;height:14px;background:var(--lime);border-radius:999px;transition:width .7s cubic-bezier(.2,.9,.3,1.15);max-width:100%}
.track .mk{position:absolute;top:-3px;width:2px;height:20px;background:var(--ink)}
.scale{display:flex;justify-content:space-between;font-size:12px;color:var(--mut)}
.days{display:flex;justify-content:space-between}
.day{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:12px;color:var(--mut)}
.day span{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.day.done span{background:var(--pri);color:var(--onpri)}
.day.today span{background:var(--lime);border:2px solid var(--ink);color:var(--onlime);font-weight:800}
.day.today{color:var(--ink);font-weight:700}
.day.next span{border:2px dashed var(--mut)}
.mini{display:none}
.tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.tier{border:1.5px solid var(--line);border-radius:16px;padding:12px 14px;display:flex;flex-direction:column;gap:4px;background:var(--card);font-size:13px}
.tier.past{background:var(--soft)}
.tier.now{background:var(--pri);color:var(--onpri);border-color:var(--pri)}
.tier.nxt{border:2px solid var(--ink)}
.tier .r{font-size:24px}

/* nhiệm vụ */
.task{display:flex;align-items:center;gap:12px;min-height:52px;padding:8px 14px;background:var(--card);border:1.5px solid var(--line);border-radius:16px;text-align:left;width:100%;transition:background .2s,border-color .2s,transform .12s}
.task:hover{border-color:var(--mut)}
.task:active{transform:scale(.97)}
.task .ck{width:26px;height:26px;border-radius:9px;border:2px solid var(--mut);flex:none;display:flex;align-items:center;justify-content:center;transition:all .2s}
.task .ck svg{opacity:0;transform:scale(.3);transition:all .25s cubic-bezier(.2,1.6,.4,1);stroke:#fff}
.task.on{background:var(--lime);border-color:var(--onlime);color:var(--onlime)}
.task.on .ck{background:#121212;border-color:#121212}
.task.on .ck svg{opacity:1;transform:scale(1)}
.task .nm{flex:1}
.task .pt{font-family:'SVN-Gilroy',sans-serif;font-weight:800;font-size:17px;line-height:1}
.task.pop1,.tk.pop1{animation:pop .45s cubic-bezier(.2,1.6,.4,1)}
@keyframes pop{0%{transform:scale(.94)}55%{transform:scale(1.04)}100%{transform:scale(1)}}
.task.locked{border-style:dashed;color:var(--mut);background:transparent}
.fly{position:fixed;z-index:60;pointer-events:none;font:800 26px 'SVN-Gilroy',sans-serif;color:var(--ink);animation:fly .9s ease-out forwards}
@keyframes fly{0%{opacity:0;transform:translateY(0) scale(.6)}20%{opacity:1;transform:translateY(-14px) scale(1.2)}100%{opacity:0;transform:translateY(-80px) scale(1)}}

/* nút và ô nhập: một chiều cao chung --h */
.btn{min-height:var(--h);padding:0 16px;border-radius:14px;border:1.5px solid var(--pri);background:var(--pri);color:var(--onpri);font-weight:700;transition:transform .12s,box-shadow .12s,opacity .12s}
.btn.ghost{background:var(--card);color:var(--ink);border-color:var(--ink)}
.btn.sm{padding:0 12px;border-radius:999px;font-size:12px}
.btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 3px 0 rgba(0,0,0,.18)}
.btn:active:not(:disabled){transform:scale(.97);box-shadow:none}
.btn:disabled{background:var(--soft);border-color:var(--line);color:var(--mut);cursor:not-allowed}
.chip{font-size:12px;background:var(--soft);padding:5px 10px;border-radius:999px;white-space:nowrap}
.tag{font-size:12px;font-weight:800;background:var(--pri);color:var(--onpri);padding:3px 8px;border-radius:999px;white-space:nowrap}
.chipb,.subs button,.seg button{min-height:var(--h);border-radius:999px;background:transparent;white-space:nowrap}
.chipb{padding:0 14px;border:1.5px solid var(--line);background:var(--card)}
.chipb:hover,.subs button:hover:not(.on),.seg button:hover:not(.on),.pick:hover{background:var(--soft)}
.chipb.on,.subs button.on,.seg button.on{background:var(--pri);border-color:var(--pri);color:var(--onpri);font-weight:700}
.subs,.seg,.wknav{display:inline-flex;gap:4px;background:var(--card);border:1.5px solid var(--line);border-radius:999px;padding:4px;align-items:center}
.subs{overflow-x:auto;align-self:flex-start;max-width:100%}
.subs button,.seg button{padding:0 16px;border:none;font-weight:600}
.wknav button{width:var(--h);height:var(--h);border:none;border-radius:50%;background:var(--soft);font-weight:800}
.wknav button:hover:not(:disabled){background:var(--line)}
.wknav button:disabled{opacity:.35}
.wknav span{padding:0 10px;font-weight:700;white-space:nowrap}
input[type=text],input[type=number],input[type=date],input[type=month],select,textarea{min-height:var(--h);border:1.5px solid var(--line);border-radius:14px;padding:0 12px;background:var(--card);width:100%;font-weight:600}
textarea{padding:12px;resize:vertical;min-height:84px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--ink);outline-offset:1px;box-shadow:none}
label{font-size:12px;font-weight:700;display:flex;flex-direction:column;gap:4px}
label.cb{flex-direction:row;align-items:center;gap:8px;min-height:44px;min-width:44px;justify-content:center;cursor:pointer;font-weight:600}
label.cb input{width:24px;height:24px;min-height:0;accent-color:#121212;flex:none}
html.dark label.cb input{accent-color:#D7F24A}
.pick{display:inline-flex;align-items:center;gap:6px;min-height:var(--h);padding:0 12px;border-radius:999px;border:1.5px solid var(--line);background:var(--card);font-size:13px;white-space:nowrap}
.pick.empty{border-style:dashed;color:var(--mut)}
.pick:after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.x{min-height:var(--h);padding:0 12px;border:1.5px solid var(--line);border-radius:999px;background:var(--card);color:var(--ink);font-size:12px;white-space:nowrap}
.x.ic{width:var(--h);padding:0;display:inline-flex;align-items:center;justify-content:center;color:var(--mut)}
.x:hover{border-color:var(--ink);color:var(--ink)}
.step{display:inline-flex;align-items:center;gap:4px;border:1.5px solid var(--line);border-radius:999px;padding:3px}
.step button{width:var(--h);height:var(--h);border:none;border-radius:50%;background:var(--soft);font-size:18px;font-weight:800}
.step button:hover{background:var(--line)}
.step span{min-width:28px;text-align:center;font-weight:800}

/* tiến độ */
.bud{display:flex;flex-direction:column;gap:6px}
.bar{height:10px;background:var(--track);border-radius:999px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--lime);border-radius:999px;transition:width .6s cubic-bezier(.2,.9,.3,1.1)}
.bar.over i,.bar.ink i{background:var(--ink)}
.pace{position:relative;height:10px;background:var(--track);border-radius:999px}
.pace i{display:block;height:100%;background:var(--lime);border-radius:999px;max-width:100%;transition:width .6s cubic-bezier(.2,.9,.3,1.1)}
.pace.over i{background:var(--ink)}
.pace u{position:absolute;top:-4px;width:2px;height:18px;background:var(--ink)}
.pace u:after{content:"Hôm nay";position:absolute;top:18px;left:-22px;font-size:12px;color:var(--mut);white-space:nowrap}
.gauge{display:flex;flex-direction:column;align-items:center;gap:4px}
.gauge b{font-family:'Big Shoulders',sans-serif;font-size:44px;line-height:1}
.trip{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;width:100%;text-align:center}
.trip b{font-family:'Big Shoulders',sans-serif;font-size:24px;display:block}
.chart{display:flex;align-items:flex-end;gap:6px;height:150px;padding-top:18px}
.chart div{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px;height:100%;min-width:0;font-size:12px;color:var(--mut)}
.chart i{display:block;width:100%;max-width:44px;background:var(--ink);border-radius:6px 6px 2px 2px;min-height:2px;transition:height .5s}
.chart div.cur i{background:var(--lime);outline:1.5px solid var(--ink)}
.chart b{color:var(--ink);font-size:12px}

/* bảng */
.sheet{overflow:auto;border:1.5px solid var(--line);border-radius:16px;background:var(--card);max-height:70vh}
.sheet table{border-collapse:collapse;width:100%;min-width:560px;font-size:13px}
.sheet th{position:sticky;top:0;background:var(--head);text-align:left;font-size:12px;letter-spacing:.03em;text-transform:uppercase;color:var(--mut);padding:10px;border-bottom:1.5px solid var(--line);white-space:nowrap;z-index:1}
.sheet td{padding:6px 10px;border-bottom:1px solid var(--soft);vertical-align:middle}
.sheet tbody tr:hover td{background:var(--head)}
.sheet tr:last-child td{border-bottom:none}
.sheet .num{text-align:right;white-space:nowrap;font-weight:800;font-size:15px}
.sheet input.cell{border:1.5px solid transparent;background:transparent;padding:0 8px;border-radius:10px;min-width:160px;min-height:var(--h);font-weight:600}
.sheet input.cell:hover{border-color:var(--line)}
.sheet input.cell:focus{border-color:var(--ink);background:var(--card);outline:none}
.sheet input.cell.n{min-width:110px;width:120px;text-align:right}
.rep td,.rep th{text-align:center}
.rep td:first-child,.rep th:first-child{text-align:left;position:sticky;left:0;background:var(--card);z-index:1;min-width:150px}
.rep th:first-child{background:var(--head);z-index:2}
.rep table{min-width:540px}
.tk{width:44px;height:44px;border-radius:12px;border:1.5px solid var(--line);background:var(--card);display:inline-flex;align-items:center;justify-content:center;transition:all .15s}
.tk:hover:not(:disabled){border-color:var(--mut)}
.tk svg{stroke:#121212}
.tk.on{background:var(--lime);border-color:#121212}
.tk:disabled{opacity:.35;cursor:not-allowed;border-style:dashed}
.tk.cur{box-shadow:0 0 0 2px var(--ink)}
.grp td{background:var(--head)!important;font-weight:800;text-align:left!important}

/* cửa hàng, admin */
.item{background:var(--card);border:1.5px solid var(--line);border-radius:18px;padding:14px;display:flex;flex-direction:column;gap:10px}
.price{display:flex;gap:8px;flex-wrap:wrap;font-size:12px}
.price span{padding:4px 10px;border-radius:999px;background:var(--soft)}
.price span.cur{background:var(--pri);color:var(--onpri);font-weight:700}
.gbox{border:1.5px solid var(--line);border-radius:16px;padding:12px;display:flex;flex-direction:column;gap:10px}
.adm2{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center}
.adm3,.adm{display:grid;grid-template-columns:84px 1fr auto;gap:6px 8px;align-items:center}
.adm3>input[type=text],.adm>input[type=text]{grid-column:1/-1}
.adm3.t{grid-template-columns:1fr 90px 90px}
.note p{line-height:1.45;white-space:pre-wrap;overflow-wrap:anywhere}
.word h3{font-size:30px}
.flash{min-height:200px;width:100%;border:1.5px solid var(--ink);border-radius:20px;background:var(--soft);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:16px}
details.card summary{cursor:pointer;font-weight:700;min-height:24px}

/* lớp nổi */
.ov{position:fixed;inset:0;background:rgba(0,0,0,.72);z-index:50;display:flex;align-items:center;justify-content:center;padding:16px;animation:fade .2s}
@keyframes fade{from{opacity:0}}
.modal{position:relative;background:var(--card);color:var(--ink);border-radius:24px;padding:22px;max-width:440px;width:100%;max-height:90vh;overflow:auto;display:flex;flex-direction:column;gap:14px;align-items:center;text-align:center;animation:rise .4s cubic-bezier(.2,1.4,.4,1)}
@keyframes rise{from{transform:translateY(30px) scale(.9);opacity:0}}
.modal h2{font-size:32px}
.mx{position:absolute;top:10px;right:10px;width:44px;height:44px;border-radius:50%;border:none;background:var(--soft);font-size:20px;line-height:1}
.mx:hover{background:var(--line)}
.spin{animation:spin .9s cubic-bezier(.2,1.5,.4,1)}
@keyframes spin{0%{transform:scale(.2) rotate(-200deg);opacity:0}100%{transform:none;opacity:1}}
.lad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%}
.lad div{border:1.5px solid var(--line);border-radius:14px;padding:8px 4px;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:12px}
.lad div.cur{border:2px solid var(--ink);background:var(--soft)}
.lad div.lock svg{filter:grayscale(1);opacity:.7}
.lad div.lock span:last-child{color:var(--mut)}
.conf{position:fixed;top:-12px;width:10px;height:14px;z-index:70;pointer-events:none;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(720deg)}}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--pri);color:var(--onpri);padding:10px 18px;border-radius:18px;z-index:80;font-size:13px;animation:rise .3s;max-width:92vw;display:flex;align-items:center;gap:10px}
.toast button{min-height:36px;padding:0 12px;border-radius:999px;border:none;background:var(--lime);color:#121212;font-weight:800;white-space:nowrap}
.pop{position:fixed;z-index:90;width:300px;max-height:320px;overflow:auto;background:var(--card);border:1.5px solid var(--line);border-radius:16px;box-shadow:0 12px 32px rgba(0,0,0,.2);padding:6px;display:flex;flex-direction:column;gap:2px;animation:fade .12s}
.pop input{border:none;border-bottom:1.5px solid var(--line);border-radius:0;margin-bottom:4px;background:transparent}
.pop input:focus{outline:none}
.pop button{min-height:44px;text-align:left;border:none;background:transparent;border-radius:10px;padding:8px 12px;display:flex;justify-content:space-between;align-items:center;gap:8px}
.pop button small{display:block;font-size:12px;color:var(--mut);font-weight:500;margin-top:2px}
.pop button:hover,.pop button:focus{background:var(--soft);outline:none;box-shadow:none}
.pop button.on{background:var(--soft);font-weight:800}
.popbg{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:89;animation:fade .15s}

@media (hover:none){.btn:hover:not(:disabled){transform:none;box-shadow:none}}
@media (max-width:899px){
 .toast{bottom:auto;top:calc(12px + env(safe-area-inset-top));width:max-content}
 .subs{width:100%}.subs button{flex:1;padding:0 6px;font-size:13px}
 .hero .days,.hero .box,.hero .scale,.hero .shopbtn{display:none}
 .hero .mini{display:flex;justify-content:space-between;align-items:center;gap:8px}
 .card.hero{gap:10px;padding:14px}
 .big{font-size:36px}.mid{font-size:24px}
}
@media (max-width:700px){
 .pop{left:0!important;right:0;top:auto!important;bottom:0!important;width:auto;max-height:70vh;border-radius:22px 22px 0 0;padding:10px 10px calc(10px + env(safe-area-inset-bottom));animation:sheetup .22s ease-out}
 @keyframes sheetup{from{transform:translateY(40px);opacity:0}}
 .sheet.cards{max-height:none;border:none;background:transparent;border-radius:0;overflow:visible}
 .sheet.cards table{min-width:0;display:block}
 .sheet.cards thead{display:none}
 .sheet.cards tbody{display:flex;flex-direction:column;gap:8px}
 .sheet.cards tr{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;padding:12px;background:var(--card);border:1.5px solid var(--line);border-radius:16px}
 .sheet.cards td{padding:0;border:none;min-width:0!important;background:transparent!important}
 .sheet.cards td:empty{display:none}
 .sheet.cards td.w{flex-basis:100%;order:2}
 .sheet.cards td:first-child:not(.w){flex:1;color:var(--mut);font-size:12px}
 .sheet.cards td:not(:first-child):not(.w){order:3}
 .sheet.cards td:last-child{margin-left:auto}
 .sheet.cards.vocab td:first-child{flex-basis:100%;order:0}
 .sheet.cards.vocab td:not(:first-child):not(.w){order:1}
 .sheet.cards.vocab td.w{order:2}
 .sheet.cards input.cell{width:100%!important;min-width:0!important;border-color:var(--line)}
 .sheet.book td.num{order:1!important;font-size:17px}
 .sheet.book td:nth-child(6):not(:empty):before{content:"+"}
 .sheet.book td:nth-child(7):not(:empty):before{content:"−"}
 .sheet.debt td.w{order:0}
 .sheet.debt td:nth-child(2){order:1!important}
 .sheet.debt td:nth-child(3){flex-basis:100%;display:flex;align-items:center;gap:8px;order:1!important}
 .sheet.debt td:nth-child(3):before{content:"Số tiền (đ)";font-size:12px;color:var(--mut);white-space:nowrap}
 .sheet.debt td:nth-child(3) input{text-align:left}
 .sheet.debt.thu td:nth-child(4):before{content:"Đã thu ";font-size:12px;font-weight:600;color:var(--mut)}
 .sheet.debt.tra td:nth-child(4):before{content:"Đã trả ";font-size:12px;font-weight:600;color:var(--mut)}
}
@media (min-width:900px){
 :root{--h:40px}
 .app{padding:16px;gap:16px}
 .side{display:flex;flex-direction:column;gap:16px;flex:0 0 230px;background:var(--surf);color:var(--onsurf);border:1.5px solid var(--surfline);border-radius:24px;padding:20px 14px;position:sticky;top:16px;height:calc(100vh / var(--z) - 32px)}
 .side .brand{font-size:30px;padding:0 8px}
 .side nav{display:flex;flex-direction:column;gap:4px}
 .side nav button{min-height:44px;padding:0 14px;border:none;border-radius:14px;text-align:left;background:transparent;color:var(--onsurf);display:flex;align-items:center;gap:10px}
 .side nav button:hover{background:var(--surf2)}
 .side nav button.on{background:var(--onsurf);color:var(--surf);font-weight:800}
 .lcard{background:var(--surf2);border:1.5px solid var(--surfline);border-radius:18px;padding:12px;display:flex;flex-direction:column;gap:10px;color:var(--onsurf);text-align:left;width:100%}
 .lcard:hover{border-color:var(--onsurf)}
 .lcard .xpbar{width:100%;height:8px;margin:0}
 .nav{display:none}.main{padding-bottom:24px}
 .head{border-radius:22px;padding:14px 20px;border:1.5px solid var(--surfline)}
 .head .lvl{display:none}
 .wrap{padding:14px 0 0}
 .tk{width:38px;height:38px}
 .x.ic{width:36px;min-height:36px}
 .sheet .pick{min-height:34px}
}
@media (min-width:1700px){.app{zoom:1.2;--z:1.2}}
@media (min-width:2100px){.app{zoom:1.45;--z:1.45}}
@media (min-width:2800px){.app{zoom:1.8;--z:1.8}}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01s!important;transition-duration:.01s!important}}

.cbl{display:none}
@media (max-width:700px){.sheet.cards .cbl{display:inline;font-size:12px;color:var(--mut)}}

.lnk{border:none;background:none;padding:0;color:inherit;font:inherit;font-weight:800;text-decoration:underline;cursor:pointer}
.stat .lnk{min-height:0}

.mhint{display:block;font-size:12px;font-weight:700;color:var(--mut);margin-top:4px}
td .mhint{position:absolute;margin-top:2px;background:var(--card);padding:0 4px;border-radius:6px}

.chat{position:sticky;top:16px}
.msgs{display:flex;flex-direction:column;gap:8px;max-height:52vh;min-height:220px;overflow:auto;padding:4px 2px}
.msg{align-self:flex-start;max-width:88%;background:var(--soft);border-radius:16px 16px 16px 4px;padding:9px 12px;display:flex;flex-direction:column;gap:2px;font-weight:500;line-height:1.4;overflow-wrap:anywhere}
.msg.me{align-self:flex-end;background:var(--pri);color:var(--onpri);border-radius:16px 16px 4px 16px}
.msg small{font-size:12px;opacity:.65}
@media (max-width:899px){.chat{position:static}.msgs{max-height:44vh}}
@media (max-width:899px){.chat{order:-1}}
.card .rowwrap>.chip{white-space:normal}

.sheet th.r{text-align:right}
@media (min-width:701px){
 .sheet.debt table{table-layout:fixed;min-width:0}
 .sheet.debt th:nth-child(2){width:150px}.sheet.debt th:nth-child(3){width:140px}.sheet.debt th:nth-child(4){width:130px}.sheet.debt th:nth-child(5){width:150px}.sheet.debt th:nth-child(6){width:64px}.sheet.debt th:nth-child(7){width:64px}
 .sheet.debt td{overflow:hidden}
 .sheet.debt input.cell{min-width:0;width:100%}
 .sheet.debt .pick{max-width:100%;overflow:hidden;text-overflow:ellipsis}
 .sheet.debt td:nth-child(6),.sheet.debt th:nth-child(6){text-align:center}
 .sheet.debt td:nth-child(6) label.cb{margin:0 auto}
}

.qbar{position:relative;height:12px;background:var(--track);border-radius:999px}
.qbar i{display:block;height:100%;background:var(--lime);border-radius:999px;max-width:100%;transition:width .6s cubic-bezier(.2,.9,.3,1.1)}
.qbar u{position:absolute;top:-3px;width:2px;height:18px;background:var(--ink);opacity:.5}
.qbar b{position:absolute;top:-6px;width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-top:7px solid var(--ink);margin-left:-6px}

.calhd{display:flex;align-items:center;gap:8px;width:100%}
.calhd b{flex:1;text-align:left;font-size:16px}
.calhd select{width:auto;min-width:96px}
.wkb{width:44px;height:44px;border:none;border-radius:50%;background:var(--soft);font-size:18px;font-weight:800}
.wkb:hover{background:var(--line)}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;width:100%}
.cal .cw{font-size:12px;color:var(--mut);text-align:center;padding:4px 0}
.cd{height:44px;border:none;border-radius:12px;background:transparent;font-weight:700;color:var(--ink)}
.cd:hover{background:var(--soft)}
.cd.td{box-shadow:inset 0 0 0 1.5px var(--ink)}
.cd.on{background:var(--lime);color:#121212}

.say{width:44px;height:44px;flex:none;border-radius:50%;border:1.5px solid var(--line);background:var(--card);color:var(--ink);display:inline-flex;align-items:center;justify-content:center}
.say:hover{border-color:var(--ink)}
.say.big{width:48px;height:48px;background:var(--soft);border-color:transparent}
.say.ping{animation:ping .5s ease-out}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(215,242,74,.9)}100%{box-shadow:0 0 0 12px rgba(215,242,74,0)}}
.sayw{border:none;background:none;padding:0;color:inherit;text-align:left;cursor:pointer}
@media (min-width:900px){.sheet .say{width:36px;height:36px}}

.vw{font-family:'SVN-Gilroy',sans-serif;font-weight:500;font-size:15px;letter-spacing:.01em;color:var(--ink);margin:0}
.vw.big{font-size:28px;font-weight:600;line-height:1.15}
.vm{font-weight:500;font-size:15px}
.sheet.vocab td{font-weight:500}
.ex{display:flex;flex-direction:column;gap:3px}
.exrow{display:flex;align-items:flex-start;gap:6px}
.exen{flex:1;font-weight:500;line-height:1.45;padding-top:2px}
.exvi{font-style:italic;font-size:12px;color:var(--mut);font-weight:500;line-height:1.4}
.ex .say{width:36px;height:36px}
@media (max-width:899px){.ex .say{width:44px;height:44px}}

.modal.wide{max-width:560px}
.lrn{width:100%;display:flex;flex-direction:column;gap:14px;text-align:left}
.lhead{display:flex;justify-content:space-between;align-items:center;gap:8px;padding-right:50px;min-height:32px}
.lbar{height:10px;border-radius:999px;background:var(--soft);overflow:hidden;flex:none}
.lbar i{display:block;height:100%;background:var(--lime);border-radius:999px;transition:width .45s cubic-bezier(.2,1.2,.4,1)}
.lq{background:var(--soft);border-radius:18px;padding:16px;display:flex;flex-direction:column;gap:6px}
.ldef{font-size:20px;font-weight:600;line-height:1.3}
.ldef.sm{font-size:16px;font-weight:500;flex:1}
.lopts{display:grid;grid-template-columns:1fr 1fr;gap:8px}
@media (max-width:520px){.lopts{grid-template-columns:1fr}}
.lopt{min-height:52px;border-radius:14px;border:1.5px solid var(--line);background:var(--card);color:var(--ink);font-size:16px;font-weight:500;text-align:left;padding:0 14px;display:flex;align-items:center;gap:10px;transition:transform .12s,border-color .12s}
.lopt kbd{font:inherit;font-size:12px;color:var(--mut);width:14px}
.lopt:hover:not(:disabled){border-color:var(--ink)}
.lopt:active:not(:disabled){transform:scale(.98)}
.lopt:disabled{opacity:.5;cursor:default}
.lopt.ok,.lopt.bad{opacity:1}
.lopt.ok{border-color:#1E9E5A;background:rgba(30,158,90,.14);animation:pop .3s}
.lopt.bad{border-color:#D8452E;background:rgba(216,69,46,.1);animation:shake .35s}
.lform{display:flex;flex-direction:column;gap:10px}
.lform input{font-size:18px;min-height:52px;width:100%}
.lfb{border-radius:18px;padding:14px 16px;display:flex;flex-direction:column;gap:8px;border:1.5px solid;animation:enter .25s}
.lfb.ok{border-color:#1E9E5A;background:rgba(30,158,90,.1)}
.lfb.bad{border-color:#D8452E;background:rgba(216,69,46,.07)}
.lfb h3{margin:0;font-size:15px;font-weight:700}
.lfb.ok h3{color:#17804A}.lfb.bad h3{color:#C23A25}
html.dark .lfb.ok h3{color:#5BD696}html.dark .lfb.bad h3{color:#FF8A75}
.lword{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.lyour{text-decoration:line-through;color:#C23A25}
html.dark .lyour{color:#FF8A75}
.lwarn{font-size:13px;color:#A8590F}
html.dark .lwarn{color:#FFB869}
.lhint{letter-spacing:.12em;font-weight:600}
.shake{animation:shake .35s}
@keyframes shake{20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}
.lmodes{display:flex;flex-direction:column;gap:8px;width:100%}
.lmode{text-align:left;border:1.5px solid var(--line);border-radius:16px;background:var(--card);color:var(--ink);padding:12px 14px;display:flex;flex-direction:column;gap:2px;min-height:60px;transition:border-color .12s,transform .12s}
.lmode:hover{border-color:var(--ink)}
.lmode:active{transform:scale(.98)}
.lmode b{font-size:16px}
.lmode span{font-size:13px;color:var(--mut)}
.more{display:flex;flex-direction:column;gap:6px}
.cos{display:flex;flex-wrap:wrap;gap:4px}
.co{border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:999px;padding:3px 10px;font-size:13px;font-weight:500;min-height:28px;text-align:left}
.co:hover{border-color:var(--ink)}
@media (max-width:899px){.co{min-height:36px;padding:3px 12px}}
.tip{font-size:12px;color:var(--mut);line-height:1.4;font-weight:500}
.weak{font-size:11px;color:#C23A25;border:1px solid currentColor;border-radius:999px;padding:1px 7px;white-space:nowrap;font-weight:600}
html.dark .weak{color:#FF8A75}

.wkmsg{font-size:13px;font-weight:600}

.lrnd{font-size:11px;color:#17804A;border:1px solid currentColor;border-radius:999px;padding:1px 7px;white-space:nowrap;font-weight:600}
html.dark .lrnd{color:#5BD696}

/* ---------- bản thật: đăng nhập, xác nhận, bảng đối chiếu ---------- */
.login{position:fixed;inset:0;z-index:90;background:var(--bg);display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{width:100%;max-width:360px;background:var(--card);border:1.5px solid var(--line);border-radius:24px;padding:28px;display:flex;flex-direction:column;gap:12px}
.login-card h1{font-size:44px;margin:0}
.lerr{color:#C23A25;font-size:13px;min-height:18px}
html.dark .lerr{color:#FF8A75}
.sheet tr.bad td{color:#C23A25;font-weight:700}
html.dark .sheet tr.bad td{color:#FF8A75}