:root{
  --paper:#F2F4F8; --card:#FFFFFF; --ink:#1A1F2E; --muted:#5E6577; --line:#DCE1EA;
  --pen:#2447A8; --pen-soft:#E3E9F8; --ok:#2F7A4F; --ok-soft:#E1F1E7; --no:#A63D3D; --no-soft:#F6E3E3;
  --serif:"Literata", Georgia, "Times New Roman", serif;
  --sans:"Instrument Sans", -apple-system, "Segoe UI", Roboto, sans-serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#10131B; --card:#181C27; --ink:#E7EAF2; --muted:#9AA1B4; --line:#2A3040;
    --pen:#8FA9FF; --pen-soft:#1F2843; --ok:#6CC495; --ok-soft:#18301F; --no:#E08A8A; --no-soft:#3A1D1D;
  }
}
:root[data-theme="dark"]{
  --paper:#10131B; --card:#181C27; --ink:#E7EAF2; --muted:#9AA1B4; --line:#2A3040;
  --pen:#8FA9FF; --pen-soft:#1F2843; --ok:#6CC495; --ok-soft:#18301F; --no:#E08A8A; --no-soft:#3A1D1D;
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:env(safe-area-inset-top,0px);background:var(--paper)}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
main{max-width:560px;margin:0 auto;padding:20px 18px 110px}
button{font:inherit;color:inherit;cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--pen);outline-offset:2px}
[hidden]{display:none!important}

/* topo */
.top{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin:8px 0 6px}
.week{color:var(--muted);font-size:14px}
.daynum{font-family:var(--serif);font-weight:400;font-style:italic;font-size:56px;line-height:1;margin:2px 0 0;letter-spacing:-.02em}
.daynum small{font-style:normal;font-size:18px;color:var(--muted);letter-spacing:0;margin-left:6px}
.arrows{display:flex;gap:6px}
.arrows button{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--card);font-size:20px;line-height:1}
.arrows button:disabled{opacity:.35;cursor:default}
.bar{height:4px;background:var(--line);border-radius:4px;overflow:hidden;margin:14px 0 4px}
.bar i{display:block;height:100%;background:var(--pen);border-radius:4px}
.barlabel{font-size:13px;color:var(--muted);display:flex;justify-content:space-between}
.backtoday{display:inline-block;margin-top:10px;border:none;background:var(--pen-soft);color:var(--pen);padding:6px 12px;border-radius:20px;font-size:14px;font-weight:500}

h2{font-family:var(--serif);font-weight:600;font-size:21px;margin:30px 0 10px}
h3{font-family:var(--serif);font-weight:600;font-size:18px;margin:22px 0 8px}
.hint{color:var(--muted);font-size:14px;margin:-4px 0 12px}

/* leituras */
.reading{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 14px;margin-bottom:10px;width:100%;text-align:left}
.reading .ck{flex:none;width:28px;height:28px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-size:15px;color:transparent;transition:background .15s,border-color .15s}
.reading.on .ck{background:var(--pen);border-color:var(--pen);color:#fff}
.reading .ref{font-family:var(--serif);font-size:20px;line-height:1.25}
.reading.on .ref{color:var(--muted);text-decoration:line-through;text-decoration-thickness:1px}
.reading .slot{font-size:13px;color:var(--muted)}
.video{display:block;margin:-4px 0 12px 42px;font-size:14px;color:var(--pen);text-decoration:none;font-weight:500}
.video:hover{text-decoration:underline}

.done-msg{margin-top:18px;background:var(--ok-soft);color:var(--ok);border-radius:12px;padding:12px 14px;font-weight:500;display:flex;justify-content:space-between;align-items:center;gap:10px}
.done-msg button{border:none;background:var(--ok);color:#fff;border-radius:20px;padding:6px 14px;font-weight:600;white-space:nowrap}

/* revisão */
.primary{display:block;width:100%;margin-top:20px;border:none;background:var(--pen);color:#fff;border-radius:12px;padding:14px;font-weight:600;font-size:16px}
.primary.done{background:var(--ok-soft);color:var(--ok)}
.primary:disabled{opacity:.6;cursor:default}

/* plano */
.wk{margin-top:22px}
.wk h3{margin:0 0 6px;font-size:16px}
.row{display:flex;gap:12px;align-items:baseline;width:100%;text-align:left;border:none;background:none;padding:9px 2px;border-bottom:1px solid var(--line)}
.row .d{flex:none;width:56px;font-size:13px;color:var(--muted)}
.row .t{flex:1;font-size:15px}
.row .s{flex:none;width:12px;height:12px;border-radius:50%;border:1.5px solid var(--line);align-self:center}
.row.ok .s{background:var(--pen);border-color:var(--pen)}
.row.cur .t{color:var(--pen);font-weight:600}
.row.rev .t{font-family:var(--serif);font-style:italic}

/* método */
.method p,.method li{font-size:16px;line-height:1.6}
.method ol,.method ul{padding-left:22px;margin:6px 0}
.method li{margin-bottom:6px}
.box{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px 16px 12px;margin-top:10px}
.reset{margin-top:36px;border:1px solid var(--line);background:none;color:var(--muted);border-radius:10px;padding:10px 14px;font-size:14px}

.devobadge{margin-top:16px;background:var(--pen);color:#fff;border-radius:12px;padding:12px 14px;font-weight:600}
.steps{padding-left:20px;margin:10px 0 6px}
.steps li{margin-bottom:8px;font-size:15px;line-height:1.5}

/* login e cadastro */
.auth{max-width:420px;margin:0 auto;padding-top:36px}
.lbl{display:block;margin-top:16px;font-size:14px;font-weight:600}
.inp{display:block;width:100%;margin-top:6px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px;padding:12px 14px;font:inherit;font-size:16px}
.chk{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:15px}
.chk input{width:20px;height:20px;margin:0;accent-color:var(--pen)}
.err{background:var(--no-soft);color:var(--no);border-radius:12px;padding:10px 14px;margin-top:14px;font-size:15px}
.okmsg{background:var(--ok-soft);color:var(--ok);border-radius:12px;padding:10px 14px;margin-top:12px;font-size:15px}
.linkbtn{display:block;border:none;background:none;color:var(--pen);font-weight:500;padding:10px 0;margin-top:10px;font-size:15px}
.secondary{display:block;width:100%;margin-top:12px;border:1px solid var(--line);background:var(--card);border-radius:12px;padding:12px;font-weight:600}
.secondary:disabled{opacity:.6;cursor:default}

/* notificações */
.prefrow{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.prefrow:last-child{border-bottom:none}
.prefrow .lb{flex:1;min-width:0}
.prefrow .lb b{display:block;font-size:15px;font-weight:600}
.prefrow .lb span{display:block;font-size:13px;color:var(--muted)}
.tm{width:auto;margin:0;padding:8px 10px;flex:none}
.sw{appearance:none;-webkit-appearance:none;flex:none;width:46px;height:28px;border-radius:14px;background:var(--line);position:relative;cursor:pointer;margin:0;transition:background .15s}
.sw::after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.25);transition:transform .15s}
.sw:checked{background:var(--pen)}
.sw:checked::after{transform:translateX(18px)}

/* aviso de sincronização */
#sync{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(74px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--paper);font-size:13px;padding:7px 14px;border-radius:20px;z-index:6;width:max-content;max-width:calc(100% - 32px);text-align:center}

/* navegação inferior */
nav{position:fixed;left:0;right:0;bottom:0;background:var(--card);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px);z-index:5}
nav .in{max-width:560px;margin:0 auto;display:flex}
nav button{flex:1;border:none;background:none;padding:12px 0 14px;font-size:13px;font-weight:500;color:var(--muted)}
nav button.on{color:var(--pen);font-weight:600}
nav button span{display:block;font-size:19px;line-height:1.2}
@media (prefers-reduced-motion: reduce){*{transition:none!important}}