/* ============================================================
   CENTRAL DE ESTUDOS — DESIGN SYSTEM (reconstruído)
   Dark premium (roxo) + tema claro. Vanilla, sem build.
   ============================================================ */

/* ===== VARIÁVEIS ===== */
:root{
  --bg:#0b0910; --bg-2:#141019; --bg-3:#1f1830; --card:#150f1f;
  --border:#2a2138; --txt:#f2eef8; --txt-2:#a99fc0; --txt-3:#726a86;
  --brand:#a855f7; --brand-2:#7c3aed; --brand-soft:#a855f728;
  --ok:#22c55e; --ok-soft:#22c55e22; --warn:#f59e0b; --warn-soft:#f59e0b22;
  --bad:#ef4444; --bad-soft:#ef444422; --info:#60a5fa;
  --shadow:0 12px 40px rgba(0,0,0,.45); --shadow-sm:0 2px 12px rgba(0,0,0,.3);
  --radius:18px; --radius-sm:12px; --maxw:1180px;
  --sidebar-w:264px;
  --font-display:'Sora','Inter',system-ui,sans-serif;
}
[data-theme="light"]{
  --bg:#f6f7fb; --bg-2:#ffffff; --bg-3:#eef1f6; --card:#ffffff;
  --border:#e2e6ee; --txt:#1a1f2b; --txt-2:#5a6573; --txt-3:#8a94a3;
  --brand:#7c3aed; --brand-2:#6d28d9; --brand-soft:#7c3aed1a;
  --shadow:0 8px 30px rgba(40,40,80,.10); --shadow-sm:0 2px 10px rgba(40,40,80,.06);
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.55;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
#app{display:flex;height:100vh;overflow:hidden}
a{color:var(--brand);text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:var(--brand-soft)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:var(--txt-3)}

h1{font-family:var(--font-display);font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.15}
h2{font-family:var(--font-display);font-size:20px;font-weight:700;letter-spacing:-.01em}
h3{font-family:var(--font-display);font-size:18px;font-weight:700}
.hero h1,.view-head h1,.brand-txt strong,.section-title{font-family:var(--font-display)}
small{font-size:.72em;color:var(--txt-2);font-weight:500}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar{
  width:var(--sidebar-w);flex-shrink:0;background:var(--bg-2);
  border-right:1px solid var(--border);display:flex;flex-direction:column;
  height:100vh;overflow-y:auto;transition:width .22s ease,transform .22s ease;padding:14px 12px;gap:6px;
}
.sidebar::-webkit-scrollbar{width:6px}

/* card de perfil (topo) */
.profile-card{
  display:flex;align-items:center;gap:11px;padding:10px;width:100%;text-align:left;
  border-radius:var(--radius-sm);transition:.15s;
}
.profile-card:hover{background:var(--bg-3)}
.avatar{
  width:44px;height:44px;flex-shrink:0;border-radius:50%;overflow:hidden;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;font-size:20px;
  box-shadow:0 0 0 2px var(--bg-2),0 0 0 3.5px var(--brand);
}
.avatar img{width:100%;height:100%;object-fit:cover}
.profile-txt{display:flex;flex-direction:column;min-width:0;flex:1}
.profile-txt strong{font-size:14.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center;gap:4px}
.verified{flex-shrink:0}
.profile-sub{font-size:11.5px;color:var(--brand);font-weight:600}
.chev{color:var(--txt-3);flex-shrink:0}

/* card de sequência */
.streak-card{
  display:flex;align-items:center;gap:10px;padding:11px 12px;margin:2px 0 6px;
  border-radius:var(--radius-sm);background:linear-gradient(135deg,rgba(168,85,247,.14),rgba(124,58,237,.06));
  border:1px solid var(--brand-soft);
}
.streak-flame{font-size:20px;filter:saturate(1.3)}
.streak-info{display:flex;flex-direction:column;flex:1;min-width:0}
.streak-info strong{font-size:13px;font-weight:700}
.streak-info em{font-size:11px;color:var(--txt-3);font-style:normal}
.streak-plus{width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:17px;font-weight:600;flex-shrink:0}

.nav{display:flex;flex-direction:column;gap:2px;flex:1;padding:2px 0}
.nav-item{
  display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:var(--radius-sm);
  color:var(--txt-2);font-size:14px;font-weight:600;position:relative;transition:.15s;
}
.nav-item .ni-ico{font-size:16px;width:30px;height:30px;flex-shrink:0;display:grid;place-items:center;border-radius:9px;background:var(--bg-3);filter:grayscale(.35);transition:.15s}
.nav-item:hover{background:var(--bg-3);color:var(--txt)}
.nav-item:hover .ni-ico{filter:grayscale(0)}
.nav-item.active{background:linear-gradient(100deg,var(--brand-soft),transparent);color:var(--txt)}
.nav-item.active .ni-ico{background:linear-gradient(135deg,var(--brand),var(--brand-2));filter:none;box-shadow:0 4px 12px rgba(168,85,247,.4)}
.nav-item.active::after{content:"";position:absolute;right:8px;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* card de nível (rodapé) */
.goal-mini{padding:14px;margin-top:6px;border-radius:var(--radius-sm);background:var(--bg-3);font-size:12.5px;color:var(--txt-2)}
.goal-mini .gbar{height:6px;background:var(--bg);border-radius:99px;margin-top:6px;overflow:hidden}
.goal-mini .gbar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:99px;transition:.4s}

/* Sidebar colapsada (desktop) */
body.nav-collapsed .sidebar{width:82px}
body.nav-collapsed .profile-txt,
body.nav-collapsed .chev,
body.nav-collapsed .streak-info,
body.nav-collapsed .streak-plus,
body.nav-collapsed .goal-mini,
body.nav-collapsed .nav-item .ni-txt{display:none}
body.nav-collapsed .profile-card,
body.nav-collapsed .streak-card{justify-content:center;padding:10px 0}
body.nav-collapsed .nav-item{justify-content:center;padding:9px 0}
body.nav-collapsed .nav-item.active::after{display:none}

/* ============================================================
   MAIN / TOPBAR
   ============================================================ */
.main{flex:1;min-width:0;display:flex;flex-direction:column;height:100vh;overflow-y:auto;overflow-x:hidden}
.topbar{
  position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:14px;
  padding:14px 26px;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--border);
}
.nav-icon{font-size:20px;width:40px;height:40px;border-radius:11px;transition:.15s;flex-shrink:0;color:var(--txt-2)}
.nav-icon:hover{background:var(--bg-3);color:var(--txt)}
.search-wrap{position:relative;flex:1;max-width:560px;display:flex;align-items:center}
.search-ico{position:absolute;left:16px;color:var(--txt-3);pointer-events:none}
.search-input{
  width:100%;padding:11px 16px 11px 42px;border-radius:99px;border:1px solid var(--border);
  background:var(--bg-2);color:var(--txt);font-size:14px;font-family:inherit;transition:.15s;
}
.search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.search-input::placeholder{color:var(--txt-3)}
.search-results{
  position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--bg-2);
  border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow);
  max-height:60vh;overflow-y:auto;display:none;z-index:40;
}
.search-results.show{display:block}
.sr-item{padding:11px 14px;border-bottom:1px solid var(--border);font-size:13.5px;cursor:pointer;transition:.12s}
.sr-item:last-child{border-bottom:none}
.sr-item:hover{background:var(--bg-3)}
.sr-item .sr-tag{font-size:11px;color:var(--brand);font-weight:700;text-transform:uppercase}
.sr-item em{color:var(--txt-3);font-style:normal}

.topbar-right{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
.stat-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px 6px 10px;border-radius:99px;background:var(--bg-2);border:1px solid var(--border);transition:.15s}
.stat-pill:hover{border-color:var(--brand-soft);background:var(--bg-3)}
.stat-pill .sp-ico{font-size:16px}
.stat-pill .sp-txt{display:flex;flex-direction:column;line-height:1.15;text-align:left}
.stat-pill .sp-txt b{font-size:13px;font-weight:700;color:var(--txt)}
.stat-pill .sp-txt em{font-size:10px;color:var(--txt-3);font-style:normal;font-weight:600}
.icon-btn{width:40px;height:40px;border-radius:12px;background:var(--bg-2);border:1px solid var(--border);font-size:16px;display:inline-flex;align-items:center;justify-content:center;transition:.15s}
.icon-btn:hover{background:var(--bg-3);border-color:var(--brand-soft)}
.topbar-btn{height:38px;padding:0 12px;border-radius:10px;background:var(--bg-2);border:1px solid var(--border);font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:.15s;flex-shrink:0}
.topbar-btn:hover{background:var(--bg-3);border-color:var(--brand-soft)}
.dragon-status{color:var(--txt)}

#content{
  max-width:var(--maxw);width:100%;margin:0 auto;padding:26px 22px 90px;
  opacity:0;transform:translateY(6px);transition:opacity .22s ease,transform .22s ease;
}
#content.fade-in{opacity:1;transform:translateY(0)}
.view-head{margin-bottom:20px}
.view-head h1{margin-bottom:4px}
.view-head p{color:var(--txt-2);font-size:14px}

/* ============================================================
   BOTÕES / CHIPS
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:var(--radius-sm);
  background:var(--bg-3);color:var(--txt);font-size:13.5px;font-weight:600;
  border:1px solid var(--border);transition:.15s;white-space:nowrap;
}
.btn:hover{background:var(--border);transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border:none;box-shadow:var(--shadow-sm)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ok{background:var(--ok);color:#fff;border:none}
.btn.ghost{background:transparent}
.btn.ghost:hover{background:var(--bg-3)}
.btn.sm{padding:6px 11px;font-size:12.5px}
.btn.back{background:transparent;color:var(--txt-2);padding-left:0;margin-bottom:14px}
.btn.back:hover{color:var(--brand);transform:none}
.card>.btn{margin:3px 8px 3px 0}

.chip{display:inline-block;padding:4px 11px;border-radius:999px;font-size:11.5px;font-weight:600;background:var(--bg-3);color:var(--txt-2)}
.chip.brand{background:var(--brand-soft);color:var(--brand)}
.chip.ok{background:var(--ok-soft);color:var(--ok)}
.chip.warn{background:var(--warn-soft);color:var(--warn)}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;align-items:center}

.sec-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}

/* ============================================================
   CARDS / GRIDS / SEÇÕES
   ============================================================ */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)}
.section-title{font-size:16px;font-weight:700;margin:26px 0 12px;display:flex;align-items:center;gap:8px}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){.grid-2,.grid-4{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.grid-2,.grid-4{grid-template-columns:1fr}}

.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.stat .k{font-size:12.5px;color:var(--txt-2);font-weight:600;margin-bottom:8px}
.stat .v{font-size:30px;font-weight:800;line-height:1;color:var(--txt)}
.stat .v small{font-size:15px;color:var(--txt-3);font-weight:600}
.stat .s{font-size:11.5px;color:var(--txt-3);margin-top:6px}

.pbar{height:8px;background:var(--bg-3);border-radius:99px;overflow:hidden}
.pbar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:99px;transition:.5s}

.empty{text-align:center;padding:54px 20px;color:var(--txt-3)}
.empty .big{font-size:52px;margin-bottom:12px;line-height:1}
.empty h2{color:var(--txt);margin-bottom:6px}

.summary-card{background:var(--brand-soft);border:1px solid var(--brand-soft);border-radius:var(--radius);padding:18px;margin-bottom:22px}
.summary-card h4{color:var(--brand);font-size:13px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}
.summary-card ul{margin:10px 0 0 18px;font-size:14px;color:var(--txt-2)}
.summary-card li{margin-bottom:5px}

/* ============================================================
   INÍCIO — ESTILO NETFLIX
   ============================================================ */
.hero{
  position:relative;border-radius:18px;overflow:hidden;margin-bottom:30px;min-height:340px;
  display:flex;align-items:flex-end;background:var(--bg-3);background-size:cover;background-position:center top;
}
.hero{min-height:380px}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--bg) 0%,rgba(11,9,16,.72) 45%,rgba(11,9,16,.15) 100%)}
.hero-inner{position:relative;z-index:2;padding:44px;max-width:60%}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);color:#e9d5ff;border:1px solid var(--brand-soft);font-size:12px;font-weight:700;padding:6px 14px;border-radius:99px;margin-bottom:16px;backdrop-filter:blur(4px)}
.hero h1{font-size:42px;line-height:1.1;color:#fff;text-shadow:0 2px 24px rgba(0,0,0,.5)}
.hero h1 .grad{background:linear-gradient(90deg,#c084fc,#a855f7);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p{color:#d9d2ea;font-size:15px;margin:12px 0 22px;max-width:500px;line-height:1.55}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-play{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:700;padding:13px 26px;border-radius:12px;font-size:15px;display:inline-flex;align-items:center;gap:8px;transition:.15s;box-shadow:0 8px 24px rgba(168,85,247,.4)}
.btn-play:hover{filter:brightness(1.1);transform:translateY(-1px)}
.btn-info{background:rgba(255,255,255,.1);color:#fff;font-weight:700;padding:13px 22px;border-radius:12px;font-size:15px;border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(4px);transition:.15s}
.btn-info:hover{background:rgba(255,255,255,.2)}
.hero-progress{margin-top:24px;max-width:520px}
.hp-bar{height:6px;background:rgba(255,255,255,.15);border-radius:99px;overflow:hidden}
.hp-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),#c084fc);border-radius:99px;transition:.5s}
.hp-meta{display:flex;justify-content:space-between;margin-top:8px;font-size:12.5px;color:#c9c1da;font-weight:600}
.hero-script{position:absolute;right:44px;bottom:40px;z-index:2;font-family:'Dancing Script',cursive;font-size:30px;color:#e9d5ff;text-align:right;line-height:1;text-shadow:0 2px 16px rgba(0,0,0,.6)}
.hero-script span{display:block;font-size:13px;letter-spacing:2px;text-transform:uppercase;font-family:'Inter',sans-serif;color:#b9a9d6;margin-top:6px}
.hero-edit{position:absolute;top:14px;right:14px;z-index:3;background:rgba(0,0,0,.5);color:#fff;width:34px;height:34px;border-radius:9px;font-size:15px;transition:.15s}
.hero-edit:hover{background:var(--brand)}
@media(max-width:760px){.hero-inner{max-width:100%;padding:24px}.hero h1{font-size:28px}.hero-script{display:none}}

/* Cards "Continue estudando" (paisagem) */
.row-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.row-head h2{margin:0}
.row-more{font-size:13px;color:var(--brand);font-weight:600;cursor:pointer}
.row-more:hover{text-decoration:underline}
.study-card{flex:0 0 auto;width:230px;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:.18s;scroll-snap-align:start}
.study-card:hover{transform:translateY(-4px);border-color:var(--brand-soft);box-shadow:var(--shadow)}
.sc-thumb{position:relative;height:132px;background:var(--bg-3);overflow:hidden}
.sc-img{width:100%;height:100%;object-fit:cover;display:block}
.sc-img.ph{display:grid;place-items:center;font-size:40px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.sc-time{position:absolute;top:10px;left:10px;background:rgba(0,0,0,.65);color:#fff;font-size:11px;font-weight:700;padding:4px 9px;border-radius:99px;backdrop-filter:blur(4px)}
.sc-play{position:absolute;bottom:10px;right:10px;width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:15px;box-shadow:0 4px 14px rgba(168,85,247,.5);transition:.15s}
.study-card:hover .sc-play{transform:scale(1.12)}
.sc-body{padding:14px}
.sc-title{font-size:13.5px;font-weight:600;line-height:1.35;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:37px}
.sc-bar{height:5px;background:var(--bg-3);border-radius:99px;overflow:hidden}
.sc-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:99px}
.sc-pct{font-size:11.5px;color:var(--brand);font-weight:600;margin-top:6px}

/* Linha de estatísticas */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:32px}
@media(max-width:1000px){.stats-row{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.stats-row{grid-template-columns:1fr}}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column}
.stat-card .sc-head{font-size:14px;font-weight:700;font-family:var(--font-display)}
.stat-card .sc-list{font-size:12.5px;color:var(--txt-2);line-height:2}
.stat-card .sc-list b{color:var(--txt);font-size:16px;font-weight:700;font-family:var(--font-display);margin-right:4px}
.stat-card .btn{margin-top:auto}
.flame-ring{width:130px;height:130px;margin:14px auto 4px;border-radius:50%;display:grid;place-items:center;position:relative;background:radial-gradient(circle at 50% 60%,rgba(249,115,22,.25),transparent 62%);border:4px solid transparent;background-clip:padding-box}
.flame-ring::before{content:"";position:absolute;inset:-4px;border-radius:50%;background:conic-gradient(#f97316,#fbbf24,#f97316,#ef4444,#f97316);z-index:-1;mask:radial-gradient(circle,transparent 58%,#000 60%)}
.flame-ring .fr-num{font-size:38px;font-weight:800;font-family:var(--font-display);line-height:1;color:#fff}
.flame-ring .fr-lbl{font-size:12px;color:var(--txt-2)}
.ach-row{display:flex;align-items:center;gap:10px;padding:7px 0;font-size:13px;border-bottom:1px solid var(--border)}
.ach-row:last-child{border-bottom:none}
.ach-ico{width:34px;height:34px;border-radius:9px;background:var(--brand-soft);display:grid;place-items:center;font-size:17px;flex-shrink:0}
.next-lesson{display:flex;gap:12px;align-items:center;cursor:pointer;margin:12px 0;padding:8px;border-radius:var(--radius-sm);transition:.15s}
.next-lesson:hover{background:var(--bg-3)}
.nl-thumb{width:72px;height:52px;border-radius:9px;object-fit:cover;flex-shrink:0;background:var(--bg-3)}
.nl-thumb.ph{display:grid;place-items:center;font-size:24px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.nl-title{font-size:13px;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nl-min{font-size:11.5px;color:var(--txt-3);margin-top:3px}

.nf-row{margin-bottom:30px}
.nf-row h2{font-size:19px;font-weight:700;margin-bottom:13px}
.row-title{display:flex;align-items:center;gap:8px}
.row-edit{font-size:13px;color:var(--txt-3);padding:2px 6px;border-radius:6px}
.row-edit:hover{background:var(--bg-3);color:var(--brand)}
.row-scroll{display:flex;gap:14px;overflow-x:auto;padding:4px 2px 14px;scroll-snap-type:x proximity}
.row-scroll.drag-over{outline:2px dashed var(--brand);outline-offset:3px;border-radius:10px}

.poster{flex:0 0 auto;width:150px;scroll-snap-align:start;cursor:pointer;transition:transform .18s,filter .18s}
.poster:hover{transform:scale(1.06) translateY(-3px);filter:brightness(1.08)}
.poster:active{transform:scale(.98)}
.poster[draggable=true]{cursor:grab}
.poster[draggable=true]:active{cursor:grabbing}
.poster .pimg{width:150px;height:225px;border-radius:10px;object-fit:cover;display:block;background:linear-gradient(150deg,var(--brand),var(--brand-2));box-shadow:var(--shadow)}
.poster .pimg.ph{display:grid;place-items:center;font-size:46px;color:#fff;text-align:center;position:relative;padding:10px}
.poster .pttl{font-size:12.5px;margin-top:8px;color:var(--txt-2);line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.poster.wide{width:280px}
.poster.wide .pimg{width:280px;height:158px;padding:18px}
.poster .badge-corner{position:absolute;top:8px;right:8px;background:rgba(0,0,0,.6);color:#fff;font-size:11px;font-weight:700;padding:3px 8px;border-radius:6px}
.poster .pring{position:absolute;top:8px;left:8px;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;z-index:2;box-shadow:0 2px 6px rgba(0,0,0,.35)}
.poster .pring-in{width:27px;height:27px;border-radius:50%;background:var(--bg-2);display:grid;place-items:center;font-size:9.5px;font-weight:800;color:var(--txt)}

/* Capa individual da aula */
.l-cover{width:46px;height:46px;border-radius:8px;object-fit:cover;flex-shrink:0;background:var(--bg-3)}
.reader-cover{width:100%;max-height:240px;object-fit:cover;border-radius:var(--radius);margin:12px 0 6px;display:block}

/* Decks de flashcards com capa (B9) */
.deck-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.deck-card{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;cursor:pointer;transition:.15s}
.deck-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.deck-cover{width:100%;height:84px;object-fit:cover;display:block;background:var(--bg-3)}
.deck-cover.ph{display:grid;place-items:center;font-size:32px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.deck-body{padding:10px}
.deck-name{font-size:13px;font-weight:600;line-height:1.25;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.deck-n{font-size:11.5px;color:var(--txt-3);margin-top:2px}
.poster .pover{position:absolute;left:0;right:0;bottom:0;padding:10px;background:linear-gradient(0deg,rgba(0,0,0,.85),transparent);color:#fff;font-size:12.5px;font-weight:600;border-radius:0 0 10px 10px}

/* ============================================================
   AULAS / READER
   ============================================================ */
.lesson-row{display:flex;align-items:center;gap:14px;padding:14px 16px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:10px;cursor:pointer;transition:.15s}
.lesson-row:hover{border-color:var(--brand);transform:translateX(2px)}
.reader{max-width:760px;margin:0 auto}
.reader h1{margin:12px 0 16px}
.reader .r-meta{margin-bottom:6px}
.reader-actions{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 24px}
.reader-body{font-size:16px;line-height:1.8;color:var(--txt)}
.reader-body p{margin-bottom:16px}

/* ============================================================
   FLASHCARDS
   ============================================================ */
.fc-stage{max-width:640px;margin:0 auto;text-align:center}
.fc-progress{color:var(--txt-3);font-size:13px;font-weight:600;margin-bottom:14px}
.flashcard{
  position:relative;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  min-height:300px;padding:28px 24px;display:flex;align-items:center;justify-content:center;
  cursor:pointer;box-shadow:var(--shadow);transition:transform .2s,border-color .2s;
}
.flashcard:hover{border-color:var(--brand)}
.flashcard:active{transform:scale(.99)}
.flashcard .side-label{position:absolute;top:14px;left:18px;font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--txt-3);font-weight:700}
.flashcard .fc-course{position:absolute;top:14px;right:18px;font-size:11px;color:var(--brand);font-weight:600}
.fc-seq{position:absolute;bottom:12px;left:14px;background:var(--brand);color:#fff;font-size:13px;font-weight:800;min-width:26px;height:26px;border-radius:8px;display:grid;place-items:center;padding:0 6px}
.fc-speak{position:absolute;bottom:12px;right:14px;font-size:18px;opacity:.7}
.fc-speak:hover{opacity:1}
.fc-content{font-size:19px;line-height:1.5;font-weight:500}
.fc-content img{max-width:100%;max-height:260px;border-radius:10px;margin-bottom:12px}
.fc-ipa{font-size:14px;color:var(--txt-3);margin-top:8px}
.fc-tags{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:14px}
.fc-hint{color:var(--txt-3);font-size:13px;margin-top:16px}
.fc-grade{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:18px}
.fc-grade button{padding:12px;border-radius:var(--radius-sm);font-weight:700;font-size:14px;color:#fff;transition:.15s}
.fc-grade button:hover{filter:brightness(1.1);transform:translateY(-1px)}
.g-again{background:var(--bad)}
.g-hard{background:var(--warn)}
.g-good{background:var(--info)}
.g-easy{background:var(--ok)}

.card-side-edit{background:var(--bg-3);border-radius:var(--radius-sm);padding:14px;margin-bottom:14px}
.card-side-edit h4{font-size:13px;color:var(--brand);margin-bottom:10px}
.img-drop{border:1.5px dashed var(--border);border-radius:var(--radius-sm);padding:12px;text-align:center;color:var(--txt-2);font-size:13px;cursor:pointer;transition:.15s}
.img-drop:hover{border-color:var(--brand);color:var(--brand)}
.img-preview{display:none;max-width:100%;max-height:180px;border-radius:8px;margin-top:10px}
.img-preview.show{display:block}

/* ============================================================
   QUIZ
   ============================================================ */
.q-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;max-width:680px;margin:0 auto}
.q-text{font-size:18px;font-weight:600;margin-bottom:18px}
.q-opt{display:block;width:100%;text-align:left;padding:13px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-2);margin-bottom:10px;font-size:14.5px;transition:.15s}
.q-opt:hover{border-color:var(--brand)}
.q-opt.correct{border-color:var(--ok);background:var(--ok-soft)}
.q-opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.q-explain{margin-top:12px;padding:12px 14px;background:var(--bg-3);border-radius:var(--radius-sm);font-size:13.5px;color:var(--txt-2);border-left:3px solid var(--brand)}

/* ============================================================
   MODOS DE ESTUDO
   ============================================================ */
.mode-sel{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.mode-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;cursor:pointer;transition:.15s;text-align:center}
.mode-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.mode-ico{font-size:34px;margin-bottom:10px}

/* ============================================================
   MEUS CURSOS (modal mod-*)
   ============================================================ */
.mod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:14px}
.mod-card{background:var(--bg-3);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;text-align:center;transition:.15s}
.mod-card.active{border-color:var(--brand)}
.mod-card.add{cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center}
.mod-card.add:hover{border-color:var(--brand)}
.mod-cover{width:100%;height:80px;border-radius:8px;object-fit:cover;display:grid;place-items:center;font-size:32px;color:#fff;margin-bottom:8px}
.mod-name{font-size:13px;font-weight:600;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mod-actions{display:flex;gap:6px;justify-content:center}

/* ============================================================
   FORMULÁRIOS / MODAL
   ============================================================ */
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--txt-2)}
.field input,.field select,.field textarea{
  width:100%;padding:10px 12px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--bg-2);color:var(--txt);font-family:inherit;font-size:14px;
}
.field textarea{min-height:90px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand)}

.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.55);display:none;place-items:center;z-index:100;padding:20px;overflow:auto;opacity:0;transition:opacity .18s;backdrop-filter:blur(2px)}
.modal-bg.show{display:grid;opacity:1}
.modal{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);padding:24px;width:100%;max-width:460px;box-shadow:var(--shadow);max-height:90vh;overflow-y:auto;margin:auto;transform:translateY(14px) scale(.98);opacity:0;transition:transform .2s ease,opacity .2s ease}
.modal-bg.show .modal{transform:translateY(0) scale(1);opacity:1}
.modal h3{margin-bottom:16px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px;flex-wrap:wrap}

/* ============================================================
   TOAST
   ============================================================ */
.toast{
  position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--txt);color:var(--bg);padding:12px 20px;border-radius:99px;font-size:14px;font-weight:600;
  opacity:0;pointer-events:none;transition:.25s;z-index:200;box-shadow:var(--shadow);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== CONFETE (C9) ===== */
.confetti{position:fixed;inset:0;pointer-events:none;z-index:300;overflow:hidden}
.confetti i{position:absolute;top:-14px;width:9px;height:14px;border-radius:2px;animation:confall linear forwards}
@keyframes confall{to{transform:translateY(106vh) rotate(720deg);opacity:.15}}

/* ===== MODO LEITURA SÉPIA (C14) ===== */
.reader.sepia .reader-body{background:#f4ecd8;color:#433422;padding:22px;border-radius:var(--radius)}
.reader.sepia .reader-body p{color:#433422}

/* ============================================================
   TURBO FAB
   ============================================================ */
.turbo-fab{
  position:fixed;bottom:24px;right:24px;z-index:50;
  background:linear-gradient(135deg,#f97316,#ea580c);color:#fff;font-weight:700;font-size:15px;
  padding:14px 22px;border-radius:99px;display:inline-flex;align-items:center;gap:8px;
  box-shadow:0 10px 30px rgba(249,115,22,.45);transition:.18s;
}
.turbo-fab:hover{transform:translateY(-2px) scale(1.03);filter:brightness(1.05)}

/* ============================================================
   HEATMAP / TIMELINE / MAPA / DRAGÕES / MINIGAME
   ============================================================ */
.heat{display:grid;grid-auto-flow:column;grid-template-rows:repeat(7,1fr);gap:3px;overflow-x:auto;padding-bottom:6px}
.heat .cell{width:13px;height:13px;border-radius:3px;background:var(--bg-3);transition:.1s}
.heat .cell[data-l="1"]{background:#0e4429}
.heat .cell[data-l="2"]{background:#006d32}
.heat .cell[data-l="3"]{background:#26a641}
.heat .cell[data-l="4"]{background:#39d353}
.heat .cell:hover{outline:2px solid var(--brand)}

.tl-slider{width:100%;-webkit-appearance:none;appearance:none;height:8px;border-radius:99px;background:linear-gradient(90deg,#475569,var(--brand),#f59e0b);outline:none}
.tl-slider::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;border-radius:50%;background:#fff;border:3px solid var(--brand);cursor:grab;box-shadow:var(--shadow)}
.tl-slider::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:#fff;border:3px solid var(--brand);cursor:grab}
.tl-date{font-weight:700;color:var(--brand)}
.tl-past{border-left:4px solid var(--brand);padding-left:14px}

.mm-node{background:var(--bg-3);border:1px solid var(--border);border-radius:8px;padding:8px 12px;font-size:13px}
.mmwrap{overflow:auto}

.dragon-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.dragon-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-align:center}
.dragon-card.owned{border-color:var(--brand)}
.dragon-card.active{outline:2px solid var(--brand)}
.dg-name{font-weight:700;margin-top:8px}

.viewer-overlay,#viewerOverlay{position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:150;display:none;flex-direction:column}
.viewer-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;color:#fff}
.viewer-close{font-size:24px;color:#fff}
.mini-wrap,#miniCv{background:var(--bg-2);border-radius:var(--radius)}

/* ============================================================
   AULAS (blocos por curso, linhas de aula)
   ============================================================ */
.course-block{margin-bottom:28px}
.course-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.course-head h3{font-size:16px}
.meta{font-size:12.5px;color:var(--txt-3);font-weight:600}
.lesson-check{width:26px;height:26px;flex-shrink:0;border-radius:50%;border:2px solid var(--border);display:grid;place-items:center;font-size:13px;color:transparent;cursor:pointer;transition:.15s}
.lesson-check:hover{border-color:var(--brand)}
.lesson-row.done .lesson-check{background:var(--ok);border-color:var(--ok);color:#fff}
.l-main{flex:1;min-width:0}
.l-title{font-weight:600;font-size:14.5px;line-height:1.3}
.l-sub{font-size:12px;color:var(--txt-3);margin-top:2px}
.l-actions{display:flex;gap:2px;flex-shrink:0}
.lesson-row.done .l-title{color:var(--txt-2)}

/* ===== GLOSSÁRIO ===== */
.gloss-item{padding:14px 2px;border-bottom:1px solid var(--border)}
.gloss-item dt{font-weight:700;font-size:15px;color:var(--brand);margin-bottom:4px}
.gloss-item dd{color:var(--txt-2);font-size:14px}

/* ===== CONQUISTAS ===== */
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:14px}
.badge{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 12px;text-align:center;opacity:.45;filter:grayscale(.6);transition:.18s}
.badge.earned{opacity:1;filter:none;border-color:var(--brand)}
.badge .ico{font-size:34px;margin-bottom:8px}
.badge .bname{font-size:12.5px;font-weight:600;line-height:1.25}

/* ===== ANÁLISES ===== */
.domain-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin:12px 0}
.domain-cell{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;text-align:center}
.kp-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}
.gap-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}
.gap-row{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid var(--border);font-size:13.5px}
.gap-row:last-child{border-bottom:none}
.heat-legend{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--txt-3);margin-top:8px}
.heat-legend .cell{width:12px;height:12px;border-radius:3px;display:inline-block}

/* ===== MÍDIA ===== */
.media-grid2{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.media-card2{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.15s}
.media-card2:hover{border-color:var(--brand);transform:translateY(-2px)}
.mc-thumb{position:relative;height:132px;background:var(--bg-3);cursor:pointer;overflow:hidden}
.mc-cover{width:100%;height:100%;object-fit:cover;display:block}
.mc-cover.ph{display:grid;place-items:center;font-size:40px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.mc-type2{position:absolute;top:8px;left:8px;background:rgba(0,0,0,.62);color:#fff;font-size:10px;font-weight:700;padding:3px 7px;border-radius:5px;text-transform:uppercase;letter-spacing:.4px}
.mc-badge{position:absolute;top:8px;right:8px;background:var(--ok);color:#fff;font-size:10px;font-weight:700;padding:3px 7px;border-radius:5px}
.mc-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:48px;height:48px;border-radius:50%;background:rgba(0,0,0,.6);color:#fff;display:grid;place-items:center;font-size:20px;transition:.15s}
.mc-thumb:hover .mc-play{background:var(--brand);transform:translate(-50%,-50%) scale(1.1)}
.mc-body2{padding:14px}
.mc-notes{font-size:12.5px;color:var(--txt-2);margin-top:6px}
.mc-actions2{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.mc-audio{width:100%;margin-top:8px}
.fc-media{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:12px}

/* ===== TURBO ===== */
.turbo-stage{max-width:640px;margin:0 auto;text-align:center}
.turbo-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:13px;color:var(--txt-2)}
.turbo-kind{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:#f97316}
.turbo-bar{height:8px;background:var(--bg-3);border-radius:99px;overflow:hidden;margin-bottom:16px}
.turbo-bar i{display:block;height:100%;background:linear-gradient(90deg,#f97316,#ea580c);border-radius:99px;transition:.3s}

/* ===== QUIZ (stage) / RECALL / NOTAS ===== */
.quiz-stage{max-width:680px;margin:0 auto}
.exam-clock{font-weight:700;color:var(--warn)}
.recall-input,.notes-box{width:100%;min-height:110px;padding:12px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-2);color:var(--txt);font-family:inherit;font-size:14px;resize:vertical}
.recall-input:focus,.notes-box:focus{outline:none;border-color:var(--brand)}
#noteArea{width:100%;min-height:120px;padding:12px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-2);color:var(--txt);font-family:inherit;font-size:14px;resize:vertical}

/* ===== FLASHCARD extras ===== */
.speed-bar{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin-top:14px}
.speed-bar button{padding:5px 11px;border-radius:8px;background:var(--bg-3);border:1px solid var(--border);font-size:12px;font-weight:600;transition:.12s}
.speed-bar button:hover,.speed-bar button.on{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-soft)}
.seq-check{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--txt-2);margin:10px 0}

/* ===== AÇÕES PRÁTICAS ===== */
.action-row{display:flex;align-items:flex-start;gap:12px;padding:12px 14px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:10px;transition:.15s}
.action-row.done{opacity:.6}
.action-row.done .a-text{text-decoration:line-through;color:var(--txt-3)}
.a-text{font-size:14.5px;line-height:1.4}
.a-course{font-size:11.5px;color:var(--brand);font-weight:600;margin-top:3px}

/* ===== VIEWER / TÍTULOS ===== */
.vtitle{font-size:15px;font-weight:700;color:#fff}

/* ===== MAPA MENTAL (árvore + canvas) ===== */
.mindtree{padding:8px 0}
.map-node,.mm-node{background:var(--bg-3);border:1px solid var(--border);border-radius:8px;padding:8px 12px;font-size:13px;display:inline-block}
.map-children{margin-left:24px;border-left:2px solid var(--border);padding-left:16px}
.mm-link{color:var(--brand)}
.mn-row{display:flex;align-items:center;gap:8px;margin:6px 0}
.mn-dot{color:var(--brand);font-size:16px;width:14px;text-align:center;flex-shrink:0}
.mn-title{font-weight:600;font-size:14px}
.mn-note,.mn-detail{margin:2px 0 6px 22px;padding:8px 12px;background:var(--bg-2);border-radius:8px;border-left:3px solid var(--brand);font-size:13px;color:var(--txt-2)}
.mn-actions{display:flex;gap:4px}
.mn-thumb,.mn-img{max-width:120px;border-radius:8px;margin-top:6px}
.mt-arrow{display:inline-block;transition:.18s;color:var(--brand);font-size:12px}
.canvas-wrap{position:relative;overflow:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-2);min-height:440px;max-height:70vh}
.canvas-board{position:relative;width:2200px;height:1500px;background-image:radial-gradient(var(--border) 1px,transparent 1px);background-size:24px 24px}
.canvas-edges{position:absolute;inset:0;pointer-events:none;overflow:visible}
.cv-top,.cv-tools{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.cv-node-bar{background:var(--brand);height:16px;border-radius:8px 8px 0 0;cursor:grab}
.cv-node-text{padding:8px 10px;font-size:13px}
.cv-node-img{max-width:100%;border-radius:0 0 8px 8px;display:block}
.cv-grip{cursor:grab}

/* ===== MINIGAME (rodapé/cabeçalho) ===== */
.mini-head,.mini-foot{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;color:var(--txt)}

/* ===== DRAGÃO (nome/pct no card) ===== */
.dc-name{font-weight:700;margin-top:6px}
.dc-pct{font-size:12px;color:var(--txt-3)}

/* ===== MISC ===== */
.media-btn{background:var(--brand-soft);color:var(--brand);border:1px solid var(--brand-soft);font-weight:700;font-size:13px;padding:7px 14px;border-radius:99px;transition:.15s}
.media-btn:hover{background:var(--brand);color:#fff}
.tl-future{border-left:4px solid var(--warn);padding-left:14px}
.revisar{color:var(--brand);font-weight:600}

/* ============================================================
   RESPONSIVO
   ============================================================ */
.bottom-nav{display:none}
@media(max-width:880px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;z-index:60;transform:translateX(-100%);box-shadow:var(--shadow)}
  .sidebar.open{transform:translateX(0)}
  #content{padding:20px 16px 120px}
  .hero-inner{max-width:100%}
  .hero{min-height:260px}
  .hero h1{font-size:24px}
  .grid-4{grid-template-columns:1fr 1fr}
  .turbo-fab{bottom:82px;right:14px;padding:12px 16px;font-size:13px}
  .bottom-nav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:55;background:color-mix(in srgb,var(--bg-2) 96%,transparent);backdrop-filter:blur(10px);border-top:1px solid var(--border);padding:6px 4px;padding-bottom:calc(6px + env(safe-area-inset-bottom));justify-content:space-around}
  .bottom-nav button{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:19px;color:var(--txt-3);padding:4px 10px;border-radius:10px;transition:.15s}
  .bottom-nav button span{font-size:10px;font-weight:600}
  .bottom-nav button.active{color:var(--brand)}
}
@media(min-width:881px){.nav-icon{display:none}}