:root{
  --bg:#f4f6fb;--card:#fff;--ink:#0f1c2e;--muted:#5b6b82;--line:#e3e8f0;
  --navy:#0b1f3a;--navy2:#143460;--green:#1f9d63;--green-soft:#dff5e8;--gold:#f2b134;--gold-soft:#fff2cf;
  --red:#d64545;--red-soft:#fde3e3;--blue:#2f6fed;--blue-soft:#e4edff;--purple:#7c4dff;--purple-soft:#ede7ff;
  --r:16px;--shadow:0 6px 24px rgba(11,31,58,.08);
  --ling:#7c4dff;--mat:#2f6fed;--nat:#1f9d63;--hum:#e06b2c;--le:#0aa3b5;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-text-size-adjust:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:Fraunces,Georgia,serif;letter-spacing:-.01em;margin:0}
h1{font-size:28px;font-weight:800;line-height:1.15}
h2{font-size:20px;font-weight:800}
h3{font-size:16px;font-weight:700}
#app{min-height:100dvh;display:flex;flex-direction:column;max-width:760px;margin:0 auto}
#topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;padding-top:calc(12px + env(safe-area-inset-top));background:var(--navy);color:#fff}
.brand{display:flex;align-items:baseline;gap:8px;color:#fff}
.logo{font-family:Fraunces,serif;font-weight:800;font-size:22px;letter-spacing:.04em;color:#7ee0a0}
.brand-sub{font-size:12px;opacity:.75}
.chip{background:rgba(255,255,255,.14);color:#fff;border-radius:999px;padding:6px 12px;font-weight:600;font-size:13px}
#screen{flex:1;padding:16px 16px 96px}
#tabbar{position:fixed;bottom:0;left:0;right:0;z-index:20;display:flex;justify-content:space-around;background:#fff;border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom));max-width:760px;margin:0 auto}
#tabbar a{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:10.5px;color:var(--muted);flex:1;padding:4px 0;border-radius:10px;font-weight:600}
#tabbar a .ico{font-size:20px;line-height:1}
#tabbar a.active{color:var(--navy);background:var(--blue-soft)}

/* blocks */
.card{background:var(--card);border-radius:var(--r);padding:16px;box-shadow:var(--shadow);margin-bottom:12px}
.card.tight{padding:12px 14px}
.row{display:flex;align-items:center;gap:10px}
.row.between{justify-content:space-between}
.wrap{flex-wrap:wrap}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.tiny{font-size:11px}
.mt{margin-top:12px}.mb{margin-bottom:12px}.mt4{margin-top:4px}
.hero{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;border-radius:20px;padding:20px;margin-bottom:14px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;border-radius:50%;background:rgba(126,224,160,.15)}
.hero h1{color:#fff}
.hero .muted{color:rgba(255,255,255,.7)}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:14px}
.kpi{background:rgba(255,255,255,.1);border-radius:12px;padding:10px 8px;text-align:center}
.kpi b{display:block;font-size:22px;font-family:Fraunces,serif}
.kpi span{font-size:11px;opacity:.8}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--navy);color:#fff;border-radius:12px;padding:12px 16px;font-weight:600;text-align:center;transition:transform .08s}
.btn:active{transform:scale(.97)}
.btn.block{width:100%}
.btn.green{background:var(--green)}
.btn.gold{background:var(--gold);color:var(--navy)}
.btn.light{background:var(--blue-soft);color:var(--navy)}
.btn.ghost{background:transparent;color:var(--navy);border:1.5px solid var(--line)}
.btn.sm{padding:8px 12px;font-size:13px;border-radius:10px}
.btn.red{background:var(--red)}
.btn[disabled]{opacity:.45;pointer-events:none}
.pill{display:inline-block;border-radius:999px;padding:3px 9px;font-size:11.5px;font-weight:600;background:var(--blue-soft);color:var(--navy)}
.pill.ling{background:#ede7ff;color:var(--ling)}.pill.mat{background:#e4edff;color:var(--mat)}.pill.nat{background:#dff5e8;color:var(--nat)}.pill.hum{background:#ffe8dc;color:var(--hum)}.pill.le{background:#dcf5f8;color:var(--le)}
.pill.A{background:var(--gold-soft);color:#8a5b00}.pill.B{background:var(--blue-soft);color:var(--blue)}.pill.C{background:var(--purple-soft);color:var(--purple)}.pill.D{background:var(--green-soft);color:var(--green)}
.bar{height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.bar>i{display:block;height:100%;background:var(--green);border-radius:99px;transition:width .4s}
.bar>i.blue{background:var(--blue)}.bar>i.gold{background:var(--gold)}
.list{display:flex;flex-direction:column;gap:8px}
.item{display:flex;align-items:center;gap:12px;background:#fff;border-radius:14px;padding:12px 14px;box-shadow:var(--shadow);text-align:left;width:100%}
.item .emoji{font-size:24px;width:36px;text-align:center}
.item .body{flex:1;min-width:0}
.item .title{font-weight:600}
.item .arrow{color:var(--muted)}
.item.left{border-left:4px solid var(--navy)}
.item.ling{border-left-color:var(--ling)}.item.mat{border-left-color:var(--mat)}.item.nat{border-left-color:var(--nat)}.item.hum{border-left-color:var(--hum)}.item.le{border-left-color:var(--le)}
.back{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-weight:600;margin-bottom:10px;font-size:13px}
.section-title{display:flex;align-items:center;justify-content:space-between;margin:18px 0 8px}
.md p{margin:0 0 8px}.md ul{margin:0 0 8px;padding-left:20px}.md li{margin:2px 0}.md h3{margin:12px 0 6px;font-size:15px}.md code{background:var(--blue-soft);padding:1px 5px;border-radius:5px;font-size:.92em}
.md strong{color:var(--navy)}
.tabs{display:flex;gap:6px;overflow-x:auto;padding-bottom:4px;margin-bottom:10px;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs button{white-space:nowrap;border-radius:999px;padding:7px 13px;background:#fff;border:1.5px solid var(--line);font-weight:600;font-size:13px;color:var(--muted)}
.tabs button.on{background:var(--navy);color:#fff;border-color:var(--navy)}
input[type=text],input[type=date],input[type=number],select,textarea{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:11px 12px;background:#fff}
textarea{min-height:160px;resize:vertical;line-height:1.6}
label.f{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin:10px 0 4px}
.check{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--line)}
.check:last-child{border-bottom:0}
.check input{width:20px;height:20px;margin-top:2px;accent-color:var(--green)}
.check.done span{text-decoration:line-through;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%) translateY(20px);background:var(--navy);color:#fff;padding:10px 16px;border-radius:12px;font-size:13.5px;opacity:0;transition:.25s;z-index:50;pointer-events:none;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%)}
.empty{text-align:center;color:var(--muted);padding:32px 16px}
.empty .big{font-size:40px}

/* flashcard */
.fc{background:#fff;border-radius:20px;box-shadow:var(--shadow);padding:22px 18px;min-height:240px;display:flex;flex-direction:column;justify-content:center;gap:12px;text-align:center;position:relative}
.fc .front{font-size:19px;font-weight:600;line-height:1.4}
.fc .back{border-top:1px dashed var(--line);padding-top:12px;font-size:16px;text-align:left}
.fc .hint{background:var(--gold-soft);border-radius:10px;padding:8px 12px;font-size:13px;text-align:left}
.fc .meta{position:absolute;top:10px;left:14px;right:14px;display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}
.rate{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:12px}
.rate button{border-radius:12px;padding:10px 4px;font-weight:700;font-size:13px;color:#fff}
.rate button small{display:block;font-weight:500;font-size:10.5px;opacity:.85}
.rate .r0{background:var(--red)}.rate .r1{background:#e8912f}.rate .r2{background:var(--green)}.rate .r3{background:var(--blue)}
.ce-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.ce-btns button{border-radius:12px;padding:12px;font-weight:700;font-size:15px}
.ce-btns .c{background:var(--green-soft);color:var(--green)}.ce-btns .e{background:var(--red-soft);color:var(--red)}
.progress-line{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:8px}

/* simulado */
.timer{font-family:Fraunces,serif;font-size:22px;font-weight:800;color:var(--navy)}
.timer.warn{color:var(--red)}
.qtext{background:#fbfcfe;border:1px solid var(--line);border-radius:12px;padding:12px;font-size:14px;max-height:280px;overflow:auto;margin-bottom:10px}
.qtext p{margin:0 0 8px}
.q{background:#fff;border-radius:14px;padding:14px;box-shadow:var(--shadow);margin-bottom:10px}
.q .num{font-weight:800;color:var(--navy);margin-right:6px}
.opts{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.opts button,.ce2 button{border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;text-align:left;background:#fff}
.opts button.sel,.ce2 button.sel{border-color:var(--navy);background:var(--blue-soft)}
.ce2{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;margin-top:8px}
.ce2 button{text-align:center;font-weight:700}
.q.ok{border-left:4px solid var(--green)}.q.bad{border-left:4px solid var(--red)}.q.blank{border-left:4px solid var(--gold)}
.numin{width:120px;text-align:center;font-size:20px;letter-spacing:.2em;font-family:monospace}
.navq{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}
.navq button{width:34px;height:34px;border-radius:8px;background:#fff;border:1.5px solid var(--line);font-size:12px;font-weight:600}
.navq button.ans{background:var(--blue-soft);border-color:var(--blue)}
.navq button.cur{background:var(--navy);color:#fff;border-color:var(--navy)}
.score-big{font-family:Fraunces,serif;font-size:44px;font-weight:800;color:var(--navy);line-height:1}

/* obras */
.gal{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.obra{background:#fff;border-radius:14px;padding:12px;box-shadow:var(--shadow);text-align:left;display:flex;flex-direction:column;gap:6px;min-height:120px}
.obra .mod{font-size:28px}
.obra .t{font-weight:700;font-size:13.5px;line-height:1.25}
.obra .a{font-size:11.5px;color:var(--muted)}

/* planner */
.week{background:#fff;border-radius:14px;padding:12px 14px;box-shadow:var(--shadow);margin-bottom:10px}
.week.cur{outline:2px solid var(--green)}
.week h3{display:flex;justify-content:space-between;align-items:center}
.calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin-top:8px}
.calendar div{aspect-ratio:1;border-radius:6px;background:var(--line);display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--muted)}
.calendar div.on{background:var(--green);color:#fff}
.calendar div.today{outline:2px solid var(--navy)}

/* redação */
.lines{font-family:monospace;font-size:12px;color:var(--muted)}
.slider{display:flex;align-items:center;gap:10px}
.slider input{flex:1;accent-color:var(--navy)}
.slider b{width:44px;text-align:right}
@media(min-width:640px){.gal{grid-template-columns:repeat(3,1fr)}}