:root{--bg:#f4f6f8;--surface:#fff;--ink:#086bd0;--muted:#086bd0;--line:color-mix(in srgb,#086bd0 20%,#fff);--brand:#086bd0;--brand-ink:#086bd0;--brand-soft:color-mix(in srgb,#086bd0 9%,#fff);--fill:color-mix(in srgb,#086bd0 12%,#fff);--on-fill:#086bd0;--good:#086bd0;--good-soft:color-mix(in srgb,#086bd0 10%,#fff);--bad:#e63946;--bad-soft:color-mix(in srgb,#e63946 6%,#fff);--warn:#086bd0;--shadow:0 7px 22px #0b132b1a;--head:56px;--top:56px;--nav:8px;color-scheme:light}
html.wrong-answer-theme{--ink:var(--bad)!important;--muted:var(--bad)!important;--line:color-mix(in srgb,var(--bad) 20%,#fff)!important;--brand:var(--bad)!important;--brand-ink:var(--bad)!important;--brand-soft:color-mix(in srgb,var(--bad) 9%,#fff)!important;--fill:color-mix(in srgb,var(--bad) 12%,#fff)!important;--on-fill:var(--bad)!important;--good:var(--bad)!important;--good-soft:color-mix(in srgb,var(--bad) 10%,#fff)!important;--warn:var(--bad)!important}
html.wrong-answer-theme .slide{--ink:var(--bad)!important;--muted:var(--bad)!important;--line:color-mix(in srgb,var(--bad) 20%,#fff)!important;--brand:var(--bad)!important;--brand-ink:var(--bad)!important;--brand-soft:color-mix(in srgb,var(--bad) 9%,#fff)!important;--fill:color-mix(in srgb,var(--bad) 12%,#fff)!important;--on-fill:var(--bad)!important;--good:var(--bad)!important;--good-soft:color-mix(in srgb,var(--bad) 10%,#fff)!important;--warn:var(--bad)!important}
.welcome-screen{position:fixed;inset:0;z-index:30;overflow:hidden;background:#086bd0;clip-path:circle(150vmax at 0% 0%);-webkit-clip-path:circle(150vmax at 0% 0%);transform:scale(1);will-change:clip-path,transform;transition:clip-path 1s cubic-bezier(.65,0,.35,1),-webkit-clip-path 1s cubic-bezier(.65,0,.35,1),transform 1s cubic-bezier(.65,0,.35,1),visibility 0s linear 1s}
.welcome-screen[hidden]{display:none}
.welcome-screen.leaving{visibility:hidden;pointer-events:none;clip-path:circle(0vmax at 0% 0%);-webkit-clip-path:circle(0vmax at 0% 0%);transform:scale(.98)}
@media(prefers-reduced-motion:reduce){.welcome-screen{transition:opacity .18s ease,visibility 0s linear .18s}.welcome-screen.leaving{clip-path:none;-webkit-clip-path:none;opacity:0;transform:none}}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-text-size-adjust:100%}
body{overflow:hidden;overscroll-behavior:none}
html,body,.app,.top{transition:background-color .5s,border-color .5s}
button,textarea{font:inherit;color:inherit;-webkit-tap-highlight-color:transparent}
button{cursor:pointer;border:0;background:none;padding:0}
:focus-visible{outline:3px solid var(--brand-ink);outline-offset:2px;border-radius:10px}
.svg-icon{width:22px;height:22px;display:block;flex:none}
.app{touch-action:pan-y pinch-zoom;position:relative;height:100dvh;width:100%;max-width:480px;margin:auto;background:var(--bg);overflow:hidden}
@media(min-width:700px){body{background:color-mix(in srgb,var(--bg) 85%,#fff)}.app{border:1px solid var(--line);box-shadow:0 0 60px #0b132b1a}}

/* Cabeçalho */
.top{position:absolute;z-index:5;top:0;left:0;right:0;height:calc(var(--head) + env(safe-area-inset-top));padding:env(safe-area-inset-top) 16px 0;display:flex;align-items:center;justify-content:space-between;gap:6px;background:var(--bg);border-bottom:1px solid var(--line)}
.brand{margin:0;font-size:19px;font-weight:850;letter-spacing:-.04em}.brand span{color:var(--brand-ink)}
.chips{display:flex;gap:8px}.chip .svg-icon{width:18px;height:18px}.chip{display:inline-flex;align-items:center;gap:6px;min-height:34px;padding:0 12px;border-radius:99px;background:var(--surface);border:1px solid var(--line);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}
.goal{position:absolute;left:0;right:0;bottom:-1px;height:3px;background:transparent}.goal i{display:block;height:100%;width:0;background:var(--brand-ink);transition:width .4s}

/* Menu discreto no cabeçalho */
.nav{flex:1;min-width:0;display:flex;justify-content:center;gap:2px}
.nav button{position:relative;min-height:44px;padding:0 8px;font-size:13px;font-weight:500;color:var(--muted)}
.nav button[aria-current=page]{color:var(--ink);font-weight:650}
.nav button[aria-current=page]:after{content:"";position:absolute;left:8px;right:8px;bottom:7px;height:2px;border-radius:2px;background:var(--brand-ink)}

/* Feed */
.feed{position:absolute;inset:0;overflow-y:scroll;overflow-x:hidden;scroll-snap-type:y mandatory;overscroll-behavior-y:contain;scrollbar-width:none}.feed::-webkit-scrollbar{display:none}
.slide{height:100dvh;scroll-snap-align:start;scroll-snap-stop:always;display:flex;align-items:center;justify-content:center;padding:calc(var(--top) + env(safe-area-inset-top) + 8px) 18px calc(var(--nav) + env(safe-area-inset-bottom) + 8px);position:relative;overflow:hidden;background:var(--bg)}
.slide::before,.slide::after{content:none}
.wrap{position:relative;z-index:1;width:100%;max-height:100%;overflow-y:auto;scrollbar-width:none;padding:4px 2px}.wrap::-webkit-scrollbar{display:none}
.meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.subject{padding:5px 12px;border-radius:99px;background:var(--brand-soft);color:var(--ink);font-size:13px;font-weight:750}.topic{font-size:13px;color:var(--muted)}.difficulty{opacity:.15}
.question{margin:0 0 22px;font-size:clamp(21px,5.6vw,27px);font-weight:760;letter-spacing:-.02em;line-height:1.22;text-wrap:pretty;overflow-wrap:anywhere}
.options{display:grid;gap:10px}
.option{position:relative;width:100%;max-width:100%;min-width:0;height:66px;display:grid;grid-template-columns:32px minmax(0,1fr);align-items:center;column-gap:12px;padding:8px 14px;text-align:left;font-size:14px;font-weight:550;line-height:1.25;background:var(--surface);border:3px solid var(--brand);border-left-width:8px;border-bottom-width:8px;border-radius:15px;box-shadow:none;transition:border-color .15s,background .15s,transform .1s}
.option>.answer-text{display:block;min-width:0;max-width:100%;white-space:normal!important;overflow:visible!important;overflow-wrap:anywhere;word-break:normal;text-overflow:clip!important}
@media(hover:hover){.option:not(:disabled):hover{border-color:var(--brand)}}
.option:not(:disabled):active{transform:scale(.985)}
.letter{flex:none;width:32px;height:32px;display:grid;place-items:center;border-radius:10px;background:var(--bg);border:1px solid var(--line);font-size:14px;font-weight:800;color:var(--muted)}
.letter .svg-icon{width:18px;height:18px;stroke-width:2.6}
.option:disabled{cursor:default}.option.dim{opacity:.55;box-shadow:none}
.option.correct{--good:#086bd0!important;color:#fff;border-color:var(--good);background:var(--good);animation:correct-pop .65s cubic-bezier(.2,1.4,.4,1),correct-glow .95s ease-out forwards}.option.wrong{color:#fff;border-color:var(--bad);background:var(--bad)}.option.correct .letter,.option.wrong .letter{background:color-mix(in srgb,#fff 18%,transparent);border-color:color-mix(in srgb,#fff 45%,transparent);color:#fff}
.option.chosen-wrong{animation:wrong-nudge .28s ease-in-out}
.answer-sparkles{position:absolute;inset:0;pointer-events:none;overflow:visible}.answer-sparkles i{position:absolute;color:#fff;font-size:14px;font-style:normal;line-height:1;opacity:0;animation:sparkle-burst .82s ease-out both}.answer-sparkles i:nth-child(1){top:-10px;right:18%}.answer-sparkles i:nth-child(2){top:10px;right:-7px;animation-delay:.08s}.answer-sparkles i:nth-child(3){bottom:-10px;left:48%;animation-delay:.14s}.answer-sparkles i:nth-child(4){top:-8px;left:22%;animation-delay:.2s}
@keyframes correct-pop{0%{transform:scale(1)}35%{transform:scale(1.045)}70%{transform:scale(.99)}100%{transform:scale(1)}}
@keyframes correct-glow{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--good) 35%,transparent)}55%{box-shadow:0 0 0 9px color-mix(in srgb,var(--good) 22%,transparent)}100%{box-shadow:0 0 0 3px color-mix(in srgb,var(--good) 16%,transparent)}}
@keyframes wrong-nudge{25%{transform:translateX(-3px)}65%{transform:translateX(3px)}}
@keyframes sparkle-burst{0%{opacity:0;transform:translateY(8px) scale(.35) rotate(-20deg)}30%{opacity:1}100%{opacity:0;transform:translateY(-15px) scale(1.3) rotate(20deg)}}
@keyframes pop{40%{transform:scale(1.02)}}
.feedback{display:none;margin-top:14px;padding:14px 16px;border-radius:16px;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--good);font-size:15px;line-height:1.5;color:var(--ink)}
.feedback.show{display:block}.feedback.bad{border-left-color:var(--bad);color:var(--bad)}.feedback strong{display:block;white-space:normal;overflow-wrap:anywhere;margin-bottom:4px;font-size:15px;line-height:1.4;color:var(--good)}.feedback.bad strong{color:var(--bad)}
.actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px}
.ghost{display:inline-flex;align-items:center;gap:8px;min-height:46px;padding:0 14px 0 10px;border-radius:99px;font-size:14px;font-weight:650;color:var(--muted)}
.ghost[aria-pressed=true]{color:var(--ink);background:var(--brand-soft)}
.go{display:none;min-height:48px;padding:0 22px;border-radius:99px;font-size:15px;font-weight:750;color:var(--muted);border:1.5px solid var(--line);background:var(--surface)}
.go.primary{display:inline-flex;align-items:center;background:var(--fill);border-color:var(--fill);color:var(--on-fill);box-shadow:0 4px 14px color-mix(in srgb,var(--fill) 60%,transparent)}
.hint{position:absolute;z-index:4;left:50%;bottom:calc(var(--nav) + env(safe-area-inset-bottom) + 14px);transform:translateX(-50%);display:flex;align-items:center;gap:6px;padding:9px 16px;border-radius:99px;background:var(--brand-soft);color:var(--ink);font-size:13px;font-weight:700;white-space:nowrap;animation:bob 1.8s ease-in-out infinite;pointer-events:none}
.hint[hidden]{display:none}.hint .svg-icon{width:16px;height:16px;transform:rotate(180deg)}
@keyframes bob{50%{transform:translate(-50%,-6px)}}

/* Anúncio ocupa quase toda a área abaixo do cabeçalho, como no layout de referência */
.ad-slide{padding:calc(var(--top) + env(safe-area-inset-top) + 6px) 4px 2px}
.ad-wrap{position:relative;z-index:1;width:100%;height:100%;display:block;text-align:center}
.ad-creative{position:relative;width:100%;height:100%;min-height:0;display:grid;place-items:center;overflow:hidden;border:0;border-radius:0;background:#b5b5b5;box-shadow:none;text-decoration:none}
.ad-creative img{display:block;width:100%;height:100%;object-fit:cover;background:#b5b5b5}
.ad-fallback{display:none;color:#fff;font-size:clamp(30px,10vw,44px);font-weight:900;letter-spacing:-.035em;line-height:1.1;text-align:center;white-space:nowrap}
.ad-placeholder{background:#b5b5b5;border-color:#b5b5b5;color:#fff}
.ad-placeholder .ad-fallback{display:block}
.ad-timer{position:absolute;z-index:2;left:50%;bottom:8px;transform:translateX(-50%);max-width:calc(100% - 20px);min-height:0;margin:0;padding:4px 9px;border-radius:99px;background:#0008;color:#fff;font-size:11px;font-weight:650;white-space:nowrap}
.ad-timer:empty{display:none}
.ad-waiting .ad-timer{color:#fff}

/* Telas secundárias */
.view{display:none;position:absolute;inset:0;z-index:3;overflow-y:auto;overscroll-behavior-y:contain;padding:calc(var(--top) + env(safe-area-inset-top) + 20px) 16px calc(var(--nav) + env(safe-area-inset-bottom) + 24px);background:var(--bg)}
.view.show{display:block}.inner{max-width:520px;margin:auto}
h2.title{margin:0 0 6px;font-size:26px;letter-spacing:-.03em;line-height:1.15}.lead{margin:0 0 20px;color:var(--muted);font-size:15px;line-height:1.45}
h3.section{margin:26px 0 12px;font-size:16px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:none}
.daily{margin-top:10px;padding:14px 16px}.daily-row{display:flex;justify-content:space-between;font-size:14px;font-weight:650;margin-bottom:10px}.daily-row span:last-child{color:var(--muted);font-variant-numeric:tabular-nums}
.meter{height:6px;border-radius:9px;background:var(--line);overflow:hidden}.meter i{display:block;height:100%;border-radius:9px;background:var(--brand-ink)}.meter i.warn,.meter i.bad,.meter i.brand{background:var(--brand-ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:14px;font-size:15px;font-weight:750;background:var(--fill);color:var(--on-fill)}
.btn.secondary{background:var(--surface);color:var(--ink);border:1.5px solid var(--line)}.btn.danger{background:transparent;color:var(--bad);border:1.5px solid var(--line)}
.sub-card{margin-bottom:10px;overflow:hidden}.sub-head{width:100%;display:flex;align-items:center;gap:12px;padding:14px;text-align:left;min-height:64px}
.sub-ico{flex:none;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-ink)}
.sub-main{flex:1;min-width:0}.sub-main strong{display:block;font-size:16px}.sub-main small{font-size:13px;color:var(--muted)}
.acc{font-size:18px;font-weight:800;font-variant-numeric:tabular-nums}.chev{color:var(--muted);transition:transform .2s}.sub-card.open .chev{transform:rotate(180deg)}
.subs{display:none;padding:4px 14px 14px}.sub-card.open .subs{display:block}.sub-row{padding:10px 0;border-top:1px solid var(--line)}.sub-line{display:flex;justify-content:space-between;gap:8px;margin-bottom:8px;font-size:14px}.sub-line span:last-child{color:var(--muted);white-space:nowrap}
.empty{padding:22px;text-align:center;color:var(--muted);font-size:15px;line-height:1.5}
.transfer{margin-top:26px;padding:18px}.transfer h3{margin:0 0 6px;font-size:17px}.transfer p{margin:0 0 14px;font-size:14px;line-height:1.5;color:var(--muted)}.row{display:flex;gap:8px;flex-wrap:wrap}
.code-box{display:none;margin-top:14px}.code-box.show{display:block}.code-box label{display:block;margin-bottom:8px;font-size:13px;color:var(--muted)}
.code-box textarea{width:100%;min-height:96px;resize:vertical;padding:12px;font-size:13px;word-break:break-all;background:var(--bg);border:1.5px solid var(--line);border-radius:12px;outline:none}.code-box textarea:focus{border-color:var(--brand)}.code-box .row{margin-top:10px}
.danger-zone{margin-top:22px;text-align:center}

/* Matérias */
.general{width:100%;display:flex;align-items:center;gap:12px;padding:14px;margin-bottom:12px;text-align:left}
.general strong,.tile strong{display:block;font-size:16px}.general small{font-size:13px;color:var(--muted)}.general>span:nth-child(2){flex:1}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tile{min-height:116px;padding:14px;display:flex;flex-direction:column;justify-content:space-between;align-items:flex-start;text-align:left}.tile small{font-size:13px;color:var(--muted)}
.tile-top{width:100%;display:flex;justify-content:space-between;align-items:center}
.check{width:24px;height:24px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;color:transparent}.check .svg-icon{width:15px;height:15px;stroke-width:3}
.general[aria-pressed=true],.tile[aria-pressed=true]{border:2px solid var(--brand);background:var(--brand-soft)}
[aria-pressed=true]>.check,[aria-pressed=true] .check{background:var(--fill);border-color:var(--fill);color:var(--on-fill)}

/* Salvas */
.saved-card{padding:16px;margin-bottom:12px}.saved-card .meta{margin-bottom:10px}.saved-card p{margin:0 0 12px;font-size:17px;font-weight:700;line-height:1.35;overflow-wrap:anywhere}
.saved-card details{font-size:15px;line-height:1.5;color:var(--muted)}.saved-card summary{cursor:pointer;min-height:40px;display:flex;align-items:center;color:var(--ink);font-weight:700}.saved-card details b{display:block;white-space:normal;overflow-wrap:anywhere;color:var(--good)}
.saved-card .ghost{margin-top:6px;margin-left:-10px}

.toast{position:absolute;z-index:10;left:50%;bottom:calc(var(--nav) + env(safe-area-inset-bottom) + 16px);transform:translate(-50%,10px);opacity:0;max-width:90%;padding:11px 18px;border-radius:99px;background:var(--fill);color:var(--ink);font-size:14px;font-weight:700;text-align:center;pointer-events:none;transition:.2s}
.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-height:700px){.question{font-size:clamp(19px,5vw,23px);margin-bottom:16px}.options{gap:8px}.meta{margin-bottom:10px}}
.in-l{animation:inL .3s ease-out}.in-r{animation:inR .3s ease-out}
@keyframes inL{from{opacity:0;transform:translateX(32px)}}
@keyframes inR{from{opacity:0;transform:translateX(-32px)}}
.chip [data-i=flame]{transform-origin:50% 90%}
.flame-pop{animation:flame .8s cubic-bezier(.3,1.5,.5,1)}
.num-pop{animation:numpop .5s ease-out}
.chip.hot{animation:chipglow .9s ease-out}
@keyframes flame{0%{transform:scale(1)}25%{transform:scale(1.55) rotate(-10deg)}50%{transform:scale(1.25) rotate(8deg)}75%{transform:scale(1.4) rotate(-4deg)}100%{transform:scale(1)}}
@keyframes numpop{40%{transform:translateY(-4px) scale(1.35)}}
@keyframes chipglow{0%{box-shadow:0 0 0 0 #086bd080;border-color:#086bd0}100%{box-shadow:0 0 0 12px #086bd000}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* Aproveitamento por dificuldade */
.sub-label{display:block;padding:10px 0 2px;font-size:13px;color:var(--muted)}

/* Perfil: hierarquia compacta e foco no progresso */
.profile-inner{padding-bottom:30px}
.profile-lead{margin-bottom:16px}
.profile-hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:12px;padding:20px;border-radius:22px;background:linear-gradient(135deg,var(--surface),var(--brand-soft));border:1px solid color-mix(in srgb,var(--brand) 24%,var(--line));box-shadow:var(--shadow)}
.profile-label{display:block;color:var(--muted);font-size:12px;font-weight:650;line-height:1.25}
.profile-total strong{display:block;margin-top:4px;font-size:42px;line-height:1;letter-spacing:-.05em;color:var(--ink);font-variant-numeric:tabular-nums}
.profile-accuracy{padding-left:14px;border-left:1px solid color-mix(in srgb,var(--brand) 25%,var(--line))}
.profile-accuracy strong{display:block;margin-top:5px;font-size:27px;line-height:1.05;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.profile-accuracy small{display:block;margin-top:4px;color:var(--muted);font-size:11px}
.profile-daily{margin-top:12px;padding:14px 16px}
.profile-daily .daily-row{margin-bottom:9px}
.profile-daily .daily-row strong{font-size:14px;font-variant-numeric:tabular-nums}
.daily-note{display:block;margin-top:7px;color:var(--muted);font-size:11px}
.profile-section{margin-top:24px}
.section-heading{margin-bottom:10px}
.section-heading .section{margin:0;font-size:18px;letter-spacing:-.02em}
.section-heading p{margin:3px 0 0;color:var(--muted);font-size:13px;line-height:1.35}
.difficulty-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.difficulty-item{min-width:0;padding:12px 10px 10px;border-radius:16px}
.difficulty-item-head{display:flex;flex-direction:column;align-items:flex-start;gap:3px;margin-bottom:9px}
.difficulty-item-head span{font-size:12px;font-weight:700;color:var(--muted)}
.difficulty-item-head strong{font-size:20px;line-height:1.1;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.difficulty-item-head small{color:var(--muted);font-size:10px;white-space:nowrap}
.profile-transfer{margin-top:26px}
@media(max-width:360px){.profile-hero{padding:16px}.profile-total strong{font-size:36px}.profile-accuracy strong{font-size:24px}}