@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --blue:#1756C5; --blue2:#2D6EE8; --blue3:#0B3A8A;
  --bluebg:#EEF4FF; --blueborder:#BFCFED;
  --green:#16A34A; --greenbg:#ECFDF5;
  --amber:#D97706; --amberbg:#FFFBEB;
  --red:#DC2626;   --redbg:#FEF2F2;
  --purple:#7C3AED;--purplebg:#F5F3FF;
  --slate:#0D1B2E; --slate2:#243448;
  --muted:#5B6B82; --subtle:#8A96A8; --ghost:#C5CDD8;
  --surface:#F5F8FC; --surface2:#EDF1F7;
  --card:#FFFFFF; --border:#E3E9F1; --border2:#D0D9E7;
  --font-h:'Sora',sans-serif; --font:'Inter',sans-serif;
  --r:10px; --rl:16px; --rxl:22px;
  --shadow-sm:0 1px 3px rgba(13,27,46,.07);
  --shadow:0 4px 14px rgba(13,27,46,.1);
  --shadow-blue:0 6px 20px rgba(23,86,197,.25);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);font-size:15px;line-height:1.6;color:var(--slate);background:var(--surface);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--font-h);line-height:1.2;letter-spacing:-.3px}
p{color:var(--muted);line-height:1.75}
a{color:var(--blue);text-decoration:none}

/* LAYOUT */
.app-layout{display:flex;min-height:100vh}
.sidebar{width:220px;background:var(--card);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;position:fixed;top:0;left:0;bottom:0;z-index:40;overflow-y:auto}
.main-area{flex:1;margin-left:220px;min-height:100vh;display:flex;flex-direction:column}
.topbar{height:56px;background:var(--card);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem;position:sticky;top:0;z-index:30}
.content{flex:1;padding:2rem 1.75rem;max-width:1000px;width:100%}

/* SIDEBAR */
.sidebar-logo{padding:1.1rem 1.25rem;font-family:var(--font-h);font-size:1.2rem;font-weight:700;color:var(--blue);letter-spacing:-.4px;border-bottom:1px solid var(--border);flex-shrink:0}
.sidebar-logo span{color:var(--slate)}
.sidebar-nav{padding:.75rem .65rem;flex:1}
.nav-section{font-size:.68rem;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--ghost);padding:.5rem .6rem;margin-top:.5rem}
.nav-item{display:flex;align-items:center;gap:.65rem;padding:.55rem .75rem;border-radius:var(--r);cursor:pointer;font-size:.875rem;color:var(--muted);transition:all .15s;margin-bottom:.1rem;text-decoration:none}
.nav-item i{font-size:17px;flex-shrink:0}
.nav-item:hover{background:var(--surface);color:var(--slate)}
.nav-item.active{background:var(--bluebg);color:var(--blue);font-weight:500}
.nav-item .badge-count{margin-left:auto;background:var(--blue);color:#fff;font-size:.65rem;font-weight:700;border-radius:100px;padding:.1rem .4rem;font-family:var(--font-h)}
.sidebar-bottom{padding:.75rem .65rem;border-top:1px solid var(--border)}

/* TOPBAR */
.topbar-left{display:flex;align-items:center;gap:.75rem}
.topbar-title{font-family:var(--font-h);font-size:1rem;font-weight:600;color:var(--slate)}
.topbar-right{display:flex;align-items:center;gap:.75rem}
.user-chip{display:flex;align-items:center;gap:.6rem;padding:.35rem .75rem .35rem .4rem;border:1px solid var(--border);border-radius:100px;cursor:pointer;transition:all .15s;background:var(--card)}
.user-chip:hover{border-color:var(--blueborder);background:var(--bluebg)}
.user-avatar{width:28px;height:28px;border-radius:50%;background:var(--blue);color:#fff;font-size:.72rem;font-weight:700;font-family:var(--font-h);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.user-name{font-size:.8rem;font-weight:500;color:var(--slate)}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:.45rem;padding:.55rem 1.1rem;border-radius:var(--r);font-family:var(--font);font-size:.875rem;font-weight:500;cursor:pointer;border:1.5px solid transparent;transition:all .18s;text-decoration:none;white-space:nowrap}
.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue);box-shadow:var(--shadow-blue)}
.btn-primary:hover{background:var(--blue3);border-color:var(--blue3)}
.btn-outline{background:transparent;color:var(--slate);border-color:var(--border2)}
.btn-outline:hover{background:var(--surface);border-color:var(--ghost)}
.btn-ghost{background:transparent;color:var(--muted);border-color:transparent}
.btn-ghost:hover{background:var(--surface2);color:var(--slate)}
.btn-danger{background:var(--red);color:#fff;border-color:var(--red)}
.btn-sm{padding:.35rem .8rem;font-size:.8rem}
.btn-lg{padding:.75rem 1.75rem;font-size:1rem;border-radius:var(--rl)}
.btn-full{width:100%;justify-content:center}
.btn:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}

/* CARDS */
.card{background:var(--card);border:1.5px solid var(--border);border-radius:var(--rl);padding:1.5rem;box-shadow:var(--shadow-sm)}
.card-sm{padding:1rem}
.card-hover:hover{border-color:var(--blueborder);box-shadow:var(--shadow);transform:translateY(-1px)}

/* STATS GRID */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin-bottom:1.75rem}
.stat-card{background:var(--card);border:1.5px solid var(--border);border-radius:var(--rl);padding:1.1rem 1.25rem}
.stat-label{font-size:.72rem;color:var(--subtle);margin-bottom:.25rem;font-weight:500;letter-spacing:.3px;text-transform:uppercase}
.stat-value{font-family:var(--font-h);font-size:1.75rem;font-weight:700;color:var(--slate);line-height:1}
.stat-sub{font-size:.75rem;color:var(--subtle);margin-top:.3rem}
.stat-trend{display:inline-flex;align-items:center;gap:3px;font-size:.72rem;font-weight:600;margin-top:.3rem}
.stat-trend.up{color:var(--green)}
.stat-trend.dn{color:var(--red)}

/* BADGE */
.badge{display:inline-flex;align-items:center;gap:4px;padding:.2rem .6rem;border-radius:100px;font-size:.72rem;font-weight:600;font-family:var(--font-h)}
.badge-blue{background:var(--bluebg);color:var(--blue3)}
.badge-green{background:var(--greenbg);color:var(--green)}
.badge-amber{background:var(--amberbg);color:var(--amber)}
.badge-red{background:var(--redbg);color:var(--red)}
.badge-purple{background:var(--purplebg);color:var(--purple)}

/* INPUTS */
.inp{width:100%;padding:.6rem .9rem;border:1.5px solid var(--border2);border-radius:var(--r);font-family:var(--font);font-size:.9rem;color:var(--slate);background:var(--card);outline:none;transition:border .15s}
.inp:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(23,86,197,.1)}
.inp::placeholder{color:var(--ghost)}
.inp-label{display:block;font-size:.8rem;font-weight:500;color:var(--muted);margin-bottom:.4rem}
textarea.inp{resize:vertical;min-height:100px}
select.inp{cursor:pointer}
.field{margin-bottom:1rem}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}

/* CHIPS */
.chip-group{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}
.chip{padding:.35rem .85rem;border-radius:100px;border:1.5px solid var(--border2);background:var(--card);font-size:.8rem;font-weight:500;cursor:pointer;transition:all .15s;color:var(--muted)}
.chip:hover{border-color:var(--blue);color:var(--blue);background:var(--bluebg)}
.chip.sel{border-color:var(--blue);background:var(--blue);color:#fff}

/* PROGRESS BAR */
.prog-bar{height:6px;background:var(--surface2);border-radius:100px;overflow:hidden}
.prog-fill{height:100%;background:var(--blue);border-radius:100px;transition:width .4s ease}
.prog-fill.green{background:var(--green)}
.prog-fill.amber{background:var(--amber)}

/* QUIZ */
.q-text{font-family:var(--font-h);font-size:1.05rem;font-weight:600;margin-bottom:1.25rem;line-height:1.5;color:var(--slate)}
.options{display:flex;flex-direction:column;gap:.65rem;margin-bottom:1.25rem}
.option{padding:.9rem 1.1rem;border:1.5px solid var(--border2);border-radius:var(--r);cursor:pointer;font-size:.9rem;text-align:left;background:var(--card);color:var(--slate);transition:all .15s;font-family:var(--font)}
.option:hover{border-color:var(--blue);background:var(--bluebg)}
.option.ok{border-color:var(--green);background:var(--greenbg);color:#15803d;font-weight:500}
.option.no{border-color:var(--red);background:var(--redbg);color:#991b1b}
.explanation{border-left:3px solid var(--blue);padding:.85rem 1rem;background:var(--bluebg);border-radius:0 var(--r) var(--r) 0;font-size:.875rem;color:var(--blue3);line-height:1.7;margin-bottom:1rem;display:none}

/* FLASHCARD */
.fc-scene{perspective:900px;margin-bottom:1rem}
.fc-card{width:100%;height:200px;position:relative;cursor:pointer;transform-style:preserve-3d;transition:transform .45s}
.fc-card.flipped{transform:rotateY(180deg)}
.fc-face{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;border-radius:var(--rl);backface-visibility:hidden;text-align:center;border:1.5px solid var(--border)}
.fc-front{background:linear-gradient(135deg,var(--blue) 0%,var(--blue2) 100%);color:#fff;border-color:transparent}
.fc-back{background:var(--card);color:var(--slate);transform:rotateY(180deg)}
.fc-tag{font-size:.68rem;font-weight:700;letter-spacing:.9px;text-transform:uppercase;opacity:.65;margin-bottom:.65rem;font-family:var(--font-h)}
.fc-text{font-family:var(--font-h);font-size:1rem;font-weight:600;line-height:1.5}
.fc-hint{font-size:.75rem;opacity:.5;margin-top:.65rem}
.fc-dots{display:flex;gap:5px;justify-content:center;margin-bottom:.75rem}
.fc-dot{width:7px;height:7px;border-radius:50%;background:var(--border2);transition:background .2s}
.fc-dot.on{background:var(--blue)}
.fc-actions{display:flex;gap:.65rem;justify-content:center;margin-bottom:1rem}

/* CHAT */
.chat-wrap{display:flex;flex-direction:column;height:400px}
.chat-messages{flex:1;background:var(--surface);border-radius:var(--rl);padding:1rem;overflow-y:auto;display:flex;flex-direction:column;gap:.65rem;margin-bottom:.75rem}
.msg{max-width:80%;padding:.65rem .95rem;border-radius:var(--rl);font-size:.875rem;line-height:1.7}
.msg.user{background:var(--blue);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.msg.ai{background:var(--card);border:1px solid var(--border);color:var(--slate);align-self:flex-start;border-bottom-left-radius:4px}
.msg.typing{color:var(--subtle);font-style:italic;font-size:.8rem;align-self:flex-start}
.chat-input-row{display:flex;gap:.65rem}

/* HISTORY */
.hist-item{display:flex;align-items:center;gap:1rem;background:var(--card);border:1.5px solid var(--border);border-radius:var(--rl);padding:1rem 1.25rem;transition:all .15s}
.hist-item:hover{border-color:var(--blueborder)}
.hist-icon{width:38px;height:38px;border-radius:var(--r);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1rem}
.hist-info{flex:1;min-width:0}
.hist-title{font-size:.875rem;font-weight:600;color:var(--slate);margin-bottom:.15rem}
.hist-sub{font-size:.78rem;color:var(--subtle)}
.hist-right{text-align:right;flex-shrink:0}
.hist-score{font-size:.9rem;font-weight:600}
.hist-date{font-size:.72rem;color:var(--subtle);margin-top:.15rem}

/* PROFILE */
.avatar-xl{width:72px;height:72px;border-radius:50%;background:var(--blue);color:#fff;font-family:var(--font-h);font-size:1.4rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.plan-badge{display:inline-flex;align-items:center;gap:.4rem;padding:.3rem .85rem;border-radius:100px;font-size:.75rem;font-weight:700;font-family:var(--font-h)}
.plan-free{background:var(--surface2);color:var(--muted)}
.plan-pro{background:linear-gradient(90deg,#1756C5,#7C3AED);color:#fff}

/* TRAIL */
.trail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}
.trail-card{background:var(--card);border:1.5px solid var(--border);border-radius:var(--rl);padding:1.25rem;cursor:pointer;transition:all .2s}
.trail-card:hover{border-color:var(--blue);box-shadow:var(--shadow);transform:translateY(-2px)}
.trail-icon{width:44px;height:44px;border-radius:var(--r);display:flex;align-items:center;justify-content:center;margin-bottom:.85rem;font-size:1.1rem}
.trail-progress{margin-top:.85rem}
.trail-label{display:flex;justify-content:space-between;font-size:.75rem;color:var(--subtle);margin-bottom:.35rem}

/* XP BAR */
.xp-bar-wrap{background:var(--surface2);border-radius:var(--rl);padding:1rem 1.25rem;display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem}
.xp-icon{font-size:1.25rem}
.xp-label{font-size:.8rem;font-weight:600;color:var(--muted);margin-bottom:.3rem;font-family:var(--font-h)}
.xp-val{font-size:.75rem;color:var(--subtle)}

/* SPINNER */
.spin{display:inline-block;width:22px;height:22px;border:2.5px solid var(--bluebg);border-top-color:var(--blue);border-radius:50%;animation:rot .7s linear infinite}
.spin-lg{width:36px;height:36px;border-width:3px}
@keyframes rot{to{transform:rotate(360deg)}}
.loading-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem;gap:.85rem;color:var(--muted);font-size:.9rem}
.empty-state{text-align:center;padding:3rem;color:var(--subtle)}
.empty-state i{font-size:2rem;display:block;margin-bottom:.75rem;opacity:.4}

/* TOAST */
#toast-container{position:fixed;bottom:1.5rem;right:1.5rem;display:flex;flex-direction:column;gap:.5rem;z-index:999}
.toast{padding:.75rem 1.1rem;border-radius:var(--r);font-size:.875rem;font-weight:500;box-shadow:var(--shadow);animation:slideIn .25s ease;display:flex;align-items:center;gap:.6rem;min-width:220px}
.toast-success{background:var(--greenbg);color:#15803d;border:1px solid #bbf7d0}
.toast-error{background:var(--redbg);color:var(--red);border:1px solid #fecaca}
.toast-info{background:var(--bluebg);color:var(--blue3);border:1px solid var(--blueborder)}
@keyframes slideIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}

/* AUTH PAGES */
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bluebg);padding:2rem}
.auth-box{background:var(--card);border:1.5px solid var(--border);border-radius:var(--rxl);padding:2.5rem;width:100%;max-width:420px;box-shadow:var(--shadow)}
.auth-logo{text-align:center;font-family:var(--font-h);font-size:1.6rem;font-weight:700;color:var(--blue);letter-spacing:-.5px;margin-bottom:.3rem}
.auth-logo span{color:var(--slate)}
.auth-sub{text-align:center;font-size:.875rem;color:var(--muted);margin-bottom:2rem}
.auth-divider{display:flex;align-items:center;gap:.75rem;margin:1.25rem 0;font-size:.8rem;color:var(--ghost)}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--border)}
.google-btn{width:100%;padding:.65rem;border:1.5px solid var(--border2);border-radius:var(--r);background:var(--card);color:var(--slate);font-size:.875rem;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.65rem;transition:all .15s;font-family:var(--font)}
.google-btn:hover{background:var(--surface);border-color:var(--ghost)}
.auth-switch{text-align:center;font-size:.85rem;color:var(--muted);margin-top:1rem}
.auth-switch a{color:var(--blue);cursor:pointer}
.err-msg{font-size:.78rem;color:var(--red);margin-top:.35rem;display:none}
.err-msg.show{display:block}

/* TABS */
.tab-bar{display:flex;gap:.25rem;border-bottom:1px solid var(--border);margin-bottom:1.5rem}
.tab-btn{padding:.6rem 1rem;font-size:.875rem;font-weight:500;color:var(--muted);cursor:pointer;border:none;background:none;border-bottom:2px solid transparent;margin-bottom:-1px;transition:all .15s;font-family:var(--font)}
.tab-btn.active{color:var(--blue);border-bottom-color:var(--blue)}
.tab-btn:hover{color:var(--slate)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* MODAL */
.modal-overlay{position:fixed;inset:0;background:rgba(13,27,46,.45);backdrop-filter:blur(4px);z-index:200;display:flex;align-items:center;justify-content:center;padding:1.5rem}
.modal{background:var(--card);border-radius:var(--rxl);padding:2rem;width:100%;max-width:480px;box-shadow:var(--shadow-lg);animation:modalIn .25s ease}
@keyframes modalIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}
.modal-title{font-family:var(--font-h);font-size:1.1rem;font-weight:600}
.modal-close{width:30px;height:30px;border-radius:50%;border:none;background:var(--surface2);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;color:var(--muted);transition:all .15s}
.modal-close:hover{background:var(--border2)}

/* MENU MOBILE (hambúrguer + overlay) */
.menu-btn{display:none;background:none;border:none;font-size:1.35rem;color:var(--slate);cursor:pointer;padding:.25rem .4rem;margin-right:.25rem}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(13,27,46,.45);z-index:39}
.sidebar-overlay.show{display:block}

/* UTILS */
.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.gap-1{gap:.5rem}.gap-2{gap:1rem}.gap-3{gap:1.5rem}
.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}
.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}
.w-full{width:100%}.text-center{text-align:center}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.1rem}
.sec-label{font-size:.7rem;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--blue);margin-bottom:.6rem}
hr.divider{border:none;border-top:1px solid var(--border);margin:1.5rem 0}
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px}

/* ═══════════════════════════════════════════════════════
   RESPONSIVO — TABLET
   ═══════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .content{max-width:100%}
  .grid-2{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVO — CELULAR
   ═══════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  html, body { overflow-x:hidden; }

  /* Sidebar vira painel deslizante */
  .sidebar{
    transform:translateX(-100%);
    transition:transform .25s ease;
    width:250px;
    box-shadow:var(--shadow);
  }
  .sidebar.open{ transform:translateX(0); }

  .main-area{ margin-left:0; width:100%; }

  /* Topbar */
  .topbar{ padding:0 1rem; }
  .menu-btn{ display:inline-flex; align-items:center; justify-content:center; }
  .user-name{ display:none; } /* mantém só o avatar no topo em telas bem estreitas */
  .topbar-title{ font-size:.92rem; }

  /* Conteúdo */
  .content{ padding:1.25rem 1rem; }

  /* Grids que ainda tinham colunas mínimas grandes */
  .stats-grid{ grid-template-columns:repeat(2,1fr); gap:.75rem; }
  .trail-grid{ grid-template-columns:1fr; }
  .grid-2, .grid-3{ grid-template-columns:1fr; }
  .field-row{ grid-template-columns:1fr; gap:0; }

  /* Cards e caixas com max-width fixo no app.html passam a ocupar 100% */
  #qz-setup, #qz-game, #qz-result,
  #fc-setup, #fc-game, #fc-done,
  #tab-chat > div,
  #tab-profile > div{
    max-width:100% !important;
  }

  .card{ padding:1.1rem; }
  .stat-card{ padding:.9rem 1rem; }
  .stat-value{ font-size:1.4rem; }

  .xp-bar-wrap{ padding:.85rem 1rem; gap:.75rem; flex-wrap:wrap; }

  /* Quiz / opções */
  .q-text{ font-size:.95rem; }
  .option{ padding:.75rem .9rem; font-size:.85rem; }

  /* Chat */
  .chat-wrap{ height:60vh; }
  .msg{ max-width:88%; }
  .chat-input-row{ flex-wrap:nowrap; }

  /* Flashcards */
  .fc-card{ height:180px; }
  .fc-face{ padding:1.25rem; }

  /* Perfil */
  .avatar-xl{ width:60px; height:60px; font-size:1.15rem; }

  /* Auth pages */
  .auth-page{ padding:1rem; align-items:flex-start; padding-top:2.5rem; }
  .auth-box{ padding:1.75rem 1.5rem; border-radius:var(--rl); }
  .auth-logo{ font-size:1.4rem; }

  /* Modal */
  .modal{ padding:1.5rem; }

  /* Toasts não devem estourar a tela */
  #toast-container{ left:1rem; right:1rem; bottom:1rem; }
  .toast{ min-width:0; width:100%; }
}

@media (max-width: 420px) {
  .stats-grid{ grid-template-columns:1fr 1fr; }
  .stat-value{ font-size:1.25rem; }
  .auth-box{ padding:1.5rem 1.1rem; }
  .btn{ padding:.55rem .9rem; font-size:.83rem; }
}

/* ═══════════════════════════════════════════════════════
   NOVAS FUNCIONALIDADES — dark mode, gamificação, etc.
   ═══════════════════════════════════════════════════════ */

/* DARK MODE */
[data-theme="dark"]{
  --blue:#4C8DFF; --blue2:#6AA3FF; --blue3:#2D6EE8;
  --bluebg:#152238; --blueborder:#2C4B7A;
  --green:#34D399; --greenbg:#0F2A22;
  --amber:#FBBF24; --amberbg:#2E2410;
  --red:#F87171;   --redbg:#2E1616;
  --purple:#A78BFA;--purplebg:#241B3D;
  --slate:#E8EEF7; --slate2:#C7D2E0;
  --muted:#9AA7BC; --subtle:#6B7890; --ghost:#3A4457;
  --surface:#0B1220; --surface2:#131C2E;
  --card:#111A2C; --border:#223049; --border2:#2C3B58;
  --shadow-sm:0 1px 3px rgba(0,0,0,.3);
  --shadow:0 4px 14px rgba(0,0,0,.4);
}
body{transition:background .2s,color .2s}
[data-theme="dark"] .google-btn{background:#111A2C;color:var(--slate);border-color:var(--border)}
[data-theme="dark"] .toast{background:var(--card);color:var(--slate)}

.theme-toggle{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;border:1px solid var(--border);background:var(--card);color:var(--muted);cursor:pointer;transition:all .15s;flex-shrink:0}
.theme-toggle:hover{background:var(--surface2);color:var(--slate)}

/* BADGES / CONQUISTAS */
.badge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:.85rem}
.badge-card{border:1.5px solid var(--border);border-radius:var(--rl);padding:1rem .75rem;text-align:center;background:var(--card);opacity:.35;filter:grayscale(1);transition:all .2s}
.badge-card.unlocked{opacity:1;filter:none;border-color:var(--blueborder);box-shadow:var(--shadow-sm)}
.badge-card .b-icon{font-size:1.75rem;margin-bottom:.4rem}
.badge-card .b-name{font-size:.75rem;font-weight:600;color:var(--slate)}
.badge-card .b-desc{font-size:.68rem;color:var(--subtle);margin-top:.15rem}

/* POMODORO */
.pomo-wrap{max-width:380px;text-align:center;padding:2.5rem 2rem;margin:0 auto}
.pomo-ring{width:220px;height:220px;border-radius:50%;margin:0 auto 1.5rem;display:flex;align-items:center;justify-content:center;background:conic-gradient(var(--blue) calc(var(--pomo-pct,100)*1%),var(--surface2) 0);position:relative;transition:background .3s}
.pomo-ring::before{content:'';position:absolute;inset:10px;border-radius:50%;background:var(--card)}
.pomo-time{position:relative;font-family:var(--font-h);font-size:2.4rem;font-weight:700;color:var(--slate)}
.pomo-mode{font-size:.8rem;color:var(--muted);margin-bottom:1.5rem;text-transform:uppercase;letter-spacing:1px;font-weight:600}
.pomo-actions{display:flex;gap:.6rem;justify-content:center}

/* ONBOARDING MODAL */
.modal-overlay{position:fixed;inset:0;background:rgba(11,18,32,.55);display:flex;align-items:center;justify-content:center;z-index:200;padding:1rem}
.modal-box{background:var(--card);border-radius:var(--rxl);padding:2rem;max-width:480px;width:100%;box-shadow:var(--shadow)}
.modal-box h3{font-size:1.15rem;margin-bottom:.4rem}
.modal-box p{font-size:.85rem;margin-bottom:1.25rem}

/* STREAK BANNER */
.streak-banner{display:flex;align-items:center;gap:.85rem;background:var(--amberbg);border:1.5px solid var(--amber);border-radius:var(--rl);padding:.9rem 1.1rem;margin-bottom:1.5rem}
.streak-banner .sb-icon{font-size:1.5rem}
.streak-banner .sb-text{flex:1;font-size:.82rem;color:var(--slate)}

/* LEADERBOARD */
.lb-row{display:flex;align-items:center;gap:.85rem;padding:.75rem .9rem;border-radius:var(--r);border:1px solid var(--border);margin-bottom:.5rem;background:var(--card)}
.lb-row.me{border-color:var(--blueborder);background:var(--bluebg)}
.lb-rank{width:26px;font-family:var(--font-h);font-weight:700;color:var(--subtle);text-align:center}
.lb-rank.top1{color:#D4AF37}.lb-rank.top2{color:#A8A8A8}.lb-rank.top3{color:#B5713A}
.lb-avatar{width:32px;height:32px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;font-family:var(--font-h);flex-shrink:0}
.lb-name{flex:1;font-size:.85rem;font-weight:500}
.lb-xp{font-family:var(--font-h);font-weight:700;color:var(--blue)}

/* PDF IMPORT DROPZONE */
.dropzone{border:1.5px dashed var(--border2);border-radius:var(--r);padding:1rem;text-align:center;font-size:.8rem;color:var(--muted);cursor:pointer;margin-bottom:1rem;transition:all .15s}
.dropzone:hover{border-color:var(--blueborder);background:var(--bluebg)}
.dropzone.has-file{border-color:var(--green);color:var(--green);border-style:solid}

/* REVISÃO DEVIDA */
.due-pill{display:inline-flex;align-items:center;gap:.3rem;background:var(--redbg);color:var(--red);font-size:.72rem;font-weight:700;padding:.2rem .6rem;border-radius:100px}

/* UPLOAD DE AVATAR */
.avatar-upload-wrap{position:relative;display:inline-block;cursor:pointer}
.avatar-upload-wrap .au-overlay{position:absolute;inset:0;border-radius:50%;background:rgba(11,18,32,.5);color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .15s;font-size:1rem;pointer-events:none}
.avatar-upload-wrap:hover .au-overlay{opacity:1}