:root{--bg:#080b16;--panel:rgba(255,255,255,.09);--panel-strong:rgba(255,255,255,.16);--text:#f8fafc;--muted:#b8c0d9;--accent:#8b5cf6;--accent-2:#22d3ee;--success:#22c55e;--danger:#fb7185;--warning:#facc15;--radius:28px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;overflow:hidden}body:before{content:"";position:fixed;inset:0;background:radial-gradient(circle at 15% 10%,rgba(139,92,246,.35),transparent 34%),radial-gradient(circle at 85% 20%,rgba(34,211,238,.22),transparent 32%),radial-gradient(circle at 50% 100%,rgba(244,114,182,.18),transparent 35%),linear-gradient(180deg,#070914 0%,#10162b 100%);z-index:-2}body:after{content:"";position:fixed;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:34px 34px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.75),transparent 80%);z-index:-1;pointer-events:none}button,input,select{font:inherit}button{color:inherit;border:0;cursor:pointer}.app{height:100dvh;width:100%;max-width:520px;margin:0 auto;position:relative;overflow:hidden;border-left:1px solid rgba(255,255,255,.06);border-right:1px solid rgba(255,255,255,.06);background:rgba(8,11,22,.38);backdrop-filter:blur(12px)}.screen{position:absolute;inset:0;display:none}.screen.active{display:block}.start-screen,.finish-screen{padding:max(24px,env(safe-area-inset-top)) 18px max(24px,env(safe-area-inset-bottom));overflow-y:auto}.brand{display:inline-flex;align-items:center;gap:10px;padding:10px 14px;border-radius:999px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.12);font-weight:800;letter-spacing:-.02em}.brand-dot{width:12px;height:12px;border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 0 24px rgba(34,211,238,.7)}.hero{min-height:100%;display:flex;flex-direction:column;justify-content:center}h1{font-size:clamp(40px,11vw,64px);line-height:.92;letter-spacing:-.07em;margin:24px 0 12px}.gradient-text{background:linear-gradient(135deg,#fff,#c4b5fd 42%,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent}.subtitle{font-size:17px;line-height:1.45;color:var(--muted);margin:0 0 18px}.admin-card,.finish-card{margin:16px 0;padding:18px;border-radius:28px;background:var(--panel);border:1px solid rgba(255,255,255,.13);box-shadow:0 24px 70px rgba(0,0,0,.22)}.admin-card h2{margin:0 0 12px;font-size:24px;letter-spacing:-.04em}.admin-card label{display:block;color:var(--muted);font-size:13px;font-weight:800;margin:12px 0 7px}.input-row{display:grid;grid-template-columns:1fr auto;gap:8px;margin-bottom:8px}input,select{width:100%;min-width:0;padding:13px 13px;border-radius:18px;border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.08);color:#fff;outline:none}select option{color:#111}.file-input{padding:12px;background:rgba(255,255,255,.08)}.check-line{display:flex!important;align-items:center;gap:8px}.check-line input{width:auto}.mini-btn{padding:0 14px;border-radius:18px;background:linear-gradient(135deg,rgba(139,92,246,.5),rgba(34,211,238,.28));border:1px solid rgba(255,255,255,.16);font-weight:900}.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}.stat{padding:16px;border-radius:22px;background:var(--panel);border:1px solid rgba(255,255,255,.11)}.stat strong{display:block;font-size:24px;letter-spacing:-.04em}.stat span{color:var(--muted);font-size:13px}.primary-btn,.secondary-btn{width:100%;padding:16px 18px;border-radius:999px;font-weight:900;font-size:16px;transition:transform .18s ease,filter .18s ease}.primary-btn{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 18px 50px rgba(139,92,246,.32)}.secondary-btn{margin-top:10px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.13)}.primary-btn:active,.secondary-btn:active{transform:scale(.98);filter:brightness(1.08)}.small-note{color:var(--muted);font-size:13px;line-height:1.45;text-align:center;margin-top:14px}.topbar{position:absolute;top:0;left:0;right:0;z-index:20;padding:max(12px,env(safe-area-inset-top)) 14px 10px;background:linear-gradient(180deg,rgba(8,11,22,.92),rgba(8,11,22,.52),transparent);pointer-events:none}.topbar-row{display:flex;justify-content:space-between;align-items:center;gap:10px;pointer-events:auto}.pill{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:36px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(14px);font-size:13px;font-weight:800}.icon-btn{width:38px;height:38px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);display:grid;place-items:center;backdrop-filter:blur(14px);font-size:17px}.timer-row{display:grid;grid-template-columns:1fr 1fr auto;gap:8px;margin-top:10px;pointer-events:auto}.timer-pill{min-height:34px;padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.13);color:rgba(248,250,252,.82);font-size:12px;font-weight:850;backdrop-filter:blur(14px);display:inline-flex;align-items:center;justify-content:center;gap:5px;white-space:nowrap}.timer-pill strong{color:#fff;font-variant-numeric:tabular-nums}.timer-action{background:linear-gradient(135deg,rgba(250,204,21,.28),rgba(251,113,133,.22));color:#fff;font-weight:950}.progress-shell{height:5px;margin-top:10px;border-radius:999px;background:rgba(255,255,255,.12);overflow:hidden}.progress-fill{height:100%;width:0%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .25s ease}.feed{height:100dvh;overflow-y:auto;scroll-snap-type:y mandatory;scroll-behavior:smooth;overscroll-behavior-y:contain;scrollbar-width:none}.feed::-webkit-scrollbar{display:none}.card{height:100dvh;scroll-snap-align:start;scroll-snap-stop:always;padding:max(90px,calc(env(safe-area-inset-top) + 84px)) 18px max(24px,env(safe-area-inset-bottom));display:flex;align-items:center;justify-content:center;position:relative}.card:before{content:"";position:absolute;inset:12px;border-radius:34px;background:linear-gradient(135deg,rgba(255,255,255,.08),transparent 35%,rgba(34,211,238,.07));pointer-events:none;opacity:.9}.card-inner{width:100%;min-height:58dvh;border-radius:var(--radius);padding:24px 20px;background:radial-gradient(circle at 12% 12%,rgba(255,255,255,.22),transparent 26%),linear-gradient(180deg,rgba(255,255,255,.14),rgba(255,255,255,.07));border:1px solid rgba(255,255,255,.16);box-shadow:0 30px 80px rgba(0,0,0,.28);display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden;animation:cardIn .5s ease both}.card-inner:before{content:"";position:absolute;width:190px;height:190px;border-radius:50%;right:-80px;top:-80px;background:radial-gradient(circle,rgba(255,255,255,.18),transparent 68%);pointer-events:none}@keyframes cardIn{from{transform:translateY(18px) scale(.985);opacity:.7}to{transform:translateY(0) scale(1);opacity:1}}.type-badge{align-self:flex-start;display:inline-flex;padding:8px 12px;border-radius:999px;font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.12);color:#fff;margin-bottom:18px}.concept .type-badge{background:rgba(139,92,246,.34)}.example .type-badge{background:rgba(34,211,238,.28)}.trap .type-badge{background:rgba(251,113,133,.32)}.question .type-badge{background:rgba(250,204,21,.28)}.review .type-badge{background:rgba(34,197,94,.28)}.reward .type-badge,.boss .type-badge{background:rgba(244,114,182,.32)}.concept .card-inner{background:radial-gradient(circle at 12% 14%,rgba(139,92,246,.42),transparent 32%),radial-gradient(circle at 90% 6%,rgba(34,211,238,.26),transparent 30%),linear-gradient(160deg,rgba(67,56,202,.36),rgba(255,255,255,.075))}.example .card-inner{background:radial-gradient(circle at 15% 16%,rgba(34,211,238,.44),transparent 32%),radial-gradient(circle at 92% 10%,rgba(16,185,129,.26),transparent 30%),linear-gradient(160deg,rgba(8,145,178,.34),rgba(255,255,255,.075))}.trap .card-inner{background:radial-gradient(circle at 15% 16%,rgba(251,113,133,.46),transparent 33%),radial-gradient(circle at 92% 8%,rgba(249,115,22,.30),transparent 30%),linear-gradient(160deg,rgba(159,18,57,.30),rgba(255,255,255,.075))}.question .card-inner{background:radial-gradient(circle at 16% 15%,rgba(250,204,21,.45),transparent 34%),radial-gradient(circle at 90% 9%,rgba(139,92,246,.26),transparent 30%),linear-gradient(160deg,rgba(180,83,9,.30),rgba(255,255,255,.075))}.review .card-inner{background:radial-gradient(circle at 15% 15%,rgba(34,197,94,.42),transparent 33%),radial-gradient(circle at 90% 7%,rgba(20,184,166,.26),transparent 30%),linear-gradient(160deg,rgba(21,128,61,.30),rgba(255,255,255,.075))}.reward .card-inner,.boss .card-inner{background:radial-gradient(circle at 20% 10%,rgba(250,204,21,.22),transparent 30%),radial-gradient(circle at 90% 0%,rgba(244,114,182,.24),transparent 34%),linear-gradient(180deg,rgba(255,255,255,.17),rgba(255,255,255,.08))}.card h2{margin:0 0 14px;font-size:clamp(28px,8vw,46px);line-height:1;letter-spacing:-.05em}.card p{margin:0;color:rgba(248,250,252,.91);font-size:clamp(18px,5vw,24px);line-height:1.34;letter-spacing:-.025em}.mini{margin-top:18px;color:var(--muted);font-size:14px;line-height:1.45}.options{display:grid;gap:10px;margin-top:20px}.option-btn{width:100%;text-align:left;padding:14px 15px;border-radius:18px;background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.13);color:#fff;font-weight:800;line-height:1.25;transition:transform .16s ease,background .16s ease,border-color .16s ease}.option-btn:active{transform:scale(.985)}.option-btn.correct{background:rgba(34,197,94,.22);border-color:rgba(34,197,94,.55)}.option-btn.wrong{background:rgba(251,113,133,.22);border-color:rgba(251,113,133,.55)}.feedback{display:none;margin-top:14px;padding:14px;border-radius:18px;background:rgba(0,0,0,.22);color:rgba(248,250,252,.92);font-size:15px;line-height:1.45}.feedback.show{display:block;animation:pop .25s ease both}@keyframes pop{from{transform:scale(.98);opacity:0}to{transform:scale(1);opacity:1}}.card-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:18px}.card-action{padding:12px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.15);font-size:13px;font-weight:900}.swipe-hint{position:absolute;left:50%;bottom:max(18px,env(safe-area-inset-bottom));transform:translateX(-50%);color:rgba(255,255,255,.62);font-size:12px;font-weight:700;letter-spacing:.03em;animation:bounce 1.6s infinite}@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0);opacity:.55}50%{transform:translateX(-50%) translateY(-7px);opacity:1}}.floating-xp{position:absolute;right:18px;top:56%;padding:9px 12px;border-radius:999px;background:rgba(34,197,94,.22);border:1px solid rgba(34,197,94,.45);color:#dcfce7;font-weight:900;opacity:0;transform:translateY(0);pointer-events:none}.floating-xp.show{animation:xpFloat .8s ease both}@keyframes xpFloat{0%{opacity:0;transform:translateY(10px) scale(.95)}18%{opacity:1}100%{opacity:0;transform:translateY(-42px) scale(1.08)}}.finish-card h2{margin:0 0 10px;font-size:36px;letter-spacing:-.05em}.metric-line{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.09);color:var(--muted)}.metric-line strong{color:#fff;font-size:19px}.bottom-actions{display:grid;gap:10px;margin-top:20px}.break-overlay{position:absolute;inset:0;z-index:60;display:none;align-items:center;justify-content:center;padding:22px;background:radial-gradient(circle at 20% 10%,rgba(34,211,238,.28),transparent 32%),radial-gradient(circle at 80% 80%,rgba(139,92,246,.32),transparent 34%),rgba(5,8,18,.86);backdrop-filter:blur(18px)}.break-overlay.show{display:flex;animation:pop .25s ease both}.break-card{width:100%;max-width:430px;padding:24px 20px;border-radius:30px;background:radial-gradient(circle at 20% 0%,rgba(34,211,238,.24),transparent 34%),linear-gradient(180deg,rgba(255,255,255,.17),rgba(255,255,255,.08));border:1px solid rgba(255,255,255,.17);box-shadow:0 35px 90px rgba(0,0,0,.42);text-align:center}.break-icon{font-size:58px;margin-bottom:8px}.break-kicker{display:inline-flex;padding:8px 12px;border-radius:999px;background:rgba(34,211,238,.18);border:1px solid rgba(34,211,238,.28);color:#cffafe;font-weight:950;font-size:12px;text-transform:uppercase;letter-spacing:.08em}.break-card h2{margin:14px 0 10px;font-size:clamp(30px,8vw,42px);line-height:1;letter-spacing:-.055em}.break-card p{margin:0;color:var(--muted);font-size:16px;line-height:1.45}.break-clock{margin:18px auto;width:132px;height:132px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,rgba(34,211,238,.22),rgba(139,92,246,.22));border:1px solid rgba(255,255,255,.18);box-shadow:inset 0 0 30px rgba(255,255,255,.08);font-size:31px;font-weight:950;font-variant-numeric:tabular-nums}.break-actions{display:grid;gap:10px}.toast{position:absolute;left:14px;right:14px;bottom:max(18px,env(safe-area-inset-bottom));z-index:80;display:none;padding:14px 16px;border-radius:20px;background:rgba(15,23,42,.9);border:1px solid rgba(255,255,255,.14);box-shadow:0 18px 50px rgba(0,0,0,.36);backdrop-filter:blur(18px);font-weight:800}.toast.show{display:block;animation:toastIn .25s ease both}@keyframes toastIn{from{transform:translateY(12px);opacity:0}to{transform:translateY(0);opacity:1}}.empty-state{padding:22px;border-radius:24px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.13);color:var(--muted);line-height:1.45}


/* V3: música, IA e importação complementar */
.helper-note{margin:6px 0 10px;color:var(--muted);font-size:12px;line-height:1.35}.ai-box{margin-top:16px;padding:14px;border-radius:22px;background:rgba(255,255,255,.075);border:1px solid rgba(255,255,255,.12)}.ai-box h3{margin:0 0 7px;font-size:18px;letter-spacing:-.03em}.ai-box p{margin:0 0 8px;color:var(--muted);font-size:13px;line-height:1.4}.ghost-btn{background:rgba(255,255,255,.07)!important}.music-header{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px;pointer-events:auto;color:rgba(248,250,252,.78);font-size:12px;font-weight:900}.hide-panel-btn,.show-panel-btn{padding:7px 10px;border-radius:999px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.13);color:#fff;font-size:12px;font-weight:900;backdrop-filter:blur(14px)}.show-panel-btn{display:none;margin-top:10px;pointer-events:auto;background:linear-gradient(135deg,rgba(139,92,246,.35),rgba(34,211,238,.24))}.show-panel-btn.show{display:inline-flex;align-items:center;justify-content:center;gap:6px}.music-panel.hidden,.music-header.hidden{display:none}.music-modes{display:flex;gap:7px;margin-top:10px;overflow-x:auto;scrollbar-width:none;pointer-events:auto}.music-modes::-webkit-scrollbar{display:none}.mode-btn{white-space:nowrap;padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);color:rgba(248,250,252,.78);font-size:12px;font-weight:850;backdrop-filter:blur(14px);transition:transform .15s ease,background .15s ease,border-color .15s ease}.mode-btn:active{transform:scale(.96)}.mode-btn.active{background:linear-gradient(135deg,rgba(139,92,246,.42),rgba(34,211,238,.28));border-color:rgba(255,255,255,.28);color:#fff;box-shadow:0 8px 24px rgba(34,211,238,.12)}.youtube-control{display:grid;grid-template-columns:1fr auto;gap:8px;margin-top:9px;pointer-events:auto}.youtube-control input{width:100%;min-width:0;padding:10px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.08);color:#fff;outline:none;font-size:12px;font-weight:750;backdrop-filter:blur(14px)}.youtube-control input::placeholder{color:rgba(248,250,252,.48)}.youtube-control button{padding:10px 13px;border-radius:999px;background:rgba(34,211,238,.2);border:1px solid rgba(34,211,238,.28);color:#fff;font-size:12px;font-weight:900;backdrop-filter:blur(14px)}.volume-control{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;margin-top:9px;padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(14px);pointer-events:auto;color:rgba(248,250,252,.82);font-size:12px;font-weight:850}.volume-control input{width:100%;accent-color:#22d3ee}.volume-control strong{min-width:38px;text-align:right;color:#fff;font-size:12px}.youtube-player-wrap{position:absolute;right:14px;bottom:max(58px,calc(env(safe-area-inset-bottom) + 58px));z-index:25;width:220px;height:124px;border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.16);background:rgba(0,0,0,.45);box-shadow:0 18px 50px rgba(0,0,0,.35);display:none}.youtube-player-wrap.show{display:block}.youtube-player-wrap iframe{width:100%;height:100%;border:0}.card{padding:max(188px,calc(env(safe-area-inset-top) + 182px)) 18px max(24px,env(safe-area-inset-bottom))}@media (max-height:760px){.music-panel:not(.hidden){display:none}.music-header:not(.hidden){display:none}.show-panel-btn{display:inline-flex}.card{padding:max(116px,calc(env(safe-area-inset-top) + 110px)) 18px max(24px,env(safe-area-inset-bottom))}.card-inner{min-height:54dvh}.card p{font-size:clamp(16px,4.4vw,22px)}}

/* V4: biblioteca de cards já criados */
.library-card{margin:16px 0;padding:18px;border-radius:28px;background:linear-gradient(180deg,rgba(255,255,255,.13),rgba(255,255,255,.065));border:1px solid rgba(255,255,255,.14);box-shadow:0 24px 70px rgba(0,0,0,.22)}
.library-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:12px}.library-head h2{margin:0 0 4px;font-size:24px;letter-spacing:-.04em}.library-head p{margin:0;color:var(--muted);font-size:13px;line-height:1.35}.library-list{display:grid;gap:10px;max-height:420px;overflow:auto;padding-right:2px;scrollbar-width:thin}.library-item{padding:14px;border-radius:22px;background:rgba(8,11,22,.36);border:1px solid rgba(255,255,255,.12)}.library-title{font-weight:950;font-size:17px;letter-spacing:-.03em}.library-subtitle,.library-meta{margin-top:5px;color:var(--muted);font-size:12px;line-height:1.35}.library-progress{height:6px;margin:10px 0;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden}.library-progress span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--accent-2))}.library-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:11px}.library-btn{padding:11px 10px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.13);font-size:13px;font-weight:900}.study-library-btn{background:linear-gradient(135deg,rgba(139,92,246,.48),rgba(34,211,238,.25))}.restart-library-btn{background:rgba(255,255,255,.075)}

/* V5 ajustes: mantém os controles de música visíveis também no desktop e evita sumirem por altura/zoom. */
.topbar{
  max-height: min(72dvh, 560px);
  overflow-y: auto;
  overscroll-behavior: contain;
  pointer-events: auto;
  padding-bottom: 12px;
}
.topbar::-webkit-scrollbar{width:0;height:0}
.music-header:not(.hidden){display:flex!important}
.music-panel:not(.hidden){
  display:block!important;
  padding:8px;
  margin-top:8px;
  border-radius:20px;
  background:rgba(8,11,22,.46);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
}
.show-panel-btn.show{display:inline-flex!important}
.youtube-control,.volume-control,.music-modes{max-width:100%}
@media (max-height:760px){
  .music-panel:not(.hidden){display:block!important}
  .music-header:not(.hidden){display:flex!important}
  .show-panel-btn:not(.show){display:none!important}
  .card{padding:max(210px,calc(env(safe-area-inset-top) + 204px)) 18px max(24px,env(safe-area-inset-bottom))!important}
  .card-inner{min-height:46dvh!important}
  .card p{font-size:clamp(15px,4.2vw,20px)!important}
}
@media (min-width:900px){
  .app{max-width:680px}
  .card{padding-left:26px;padding-right:26px}
}