:root{--bg:#0e1420;--card:#161e2e;--line:#27324a;--fg:#e6ebf5;--muted:#8a96ad;--accent:#3dd6b0;--pass:#2fbf71;--warn:#e8a838;--fail:#e5534b;--info:#6b7a99}
@media (prefers-color-scheme:light){:root{--bg:#f4f6fa;--card:#fff;--line:#d9dfeb;--fg:#162033;--muted:#5d6b85;--accent:#0b8f73}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
main{max-width:820px;margin:0 auto;padding:32px 16px 48px}
h1{margin:0;font-size:2rem;letter-spacing:-.02em}h1 span{color:var(--accent)}
header p{color:var(--muted);margin:.4rem 0 1.5rem}
form{display:flex;gap:8px}
input{flex:1;min-width:0;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--fg);font-size:1rem}
input:focus{outline:2px solid var(--accent);outline-offset:1px}
button{padding:12px 20px;border:0;border-radius:10px;background:var(--accent);color:#06241c;font-weight:700;font-size:1rem;cursor:pointer}
button:disabled{opacity:.6;cursor:wait}
#status{margin:14px 0;color:var(--muted);min-height:1.5em}#status.error{color:var(--fail)}
.summary{display:flex;gap:20px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin-bottom:16px}
.grade{width:84px;height:84px;border-radius:16px;display:grid;place-items:center;font-size:2.4rem;font-weight:800;color:#fff;background:var(--info)}
.grade.g-A{background:var(--pass)}.grade.g-B{background:#8fbf3a}.grade.g-C{background:var(--warn)}.grade.g-D,.grade.g-E{background:#e07b39}.grade.g-F{background:var(--fail)}
.score{font-size:1.25rem;font-weight:700}.muted{color:var(--muted);font-size:.9rem;word-break:break-all}
.check{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--info);border-radius:10px;padding:12px 16px;margin-bottom:10px}
.check.pass{border-left-color:var(--pass)}.check.warn{border-left-color:var(--warn)}.check.fail{border-left-color:var(--fail)}
.check h3{margin:0;display:flex;justify-content:space-between;gap:8px;font-size:1rem}
.pts{color:var(--muted);font-weight:500;font-size:.85rem;white-space:nowrap}
.check p{margin:.35rem 0 0;color:var(--muted);font-size:.93rem}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82rem}
pre{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px;overflow:auto;white-space:pre-wrap;word-break:break-all;margin:.5rem 0 0}
.fix::before{content:"Correção sugerida";display:block;font:600 .75rem system-ui;color:var(--accent);margin-top:.6rem}
details{margin-top:16px}summary{cursor:pointer;color:var(--muted)}
footer{margin-top:40px;color:var(--muted);font-size:.85rem;text-align:center}
@media (max-width:480px){form{flex-direction:column}.summary{flex-direction:column;align-items:flex-start}}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--muted);margin-bottom:14px}.brand img{border-radius:9px}
#ts{margin-top:12px;min-height:0}
.cta{display:flex;flex-direction:column;gap:4px;margin-top:20px;padding:16px 18px;border-radius:12px;background:var(--card);border:1px solid var(--accent)}
.cta span{color:var(--muted);font-size:.93rem}.cta a,footer a{color:var(--accent);font-weight:600}
footer{line-height:1.6}
.warning{background:rgba(232,168,56,.14);border:1px solid var(--warn);border-radius:12px;padding:14px 16px;margin-bottom:16px;font-size:.95rem;line-height:1.5}

/* ---- Exportar PDF ---- */
.toolbar{display:flex;justify-content:flex-end;margin-bottom:12px}
button.secondary{background:transparent;color:var(--accent);border:1px solid var(--accent);padding:8px 16px;font-size:.92rem}
button.secondary:hover{background:rgba(61,214,176,.12)}
.print-only{display:none}

@media print{
  @page{size:A4;margin:14mm}
  :root{--bg:#fff;--card:#fff;--fg:#111;--muted:#444;--line:#cfd5e0;--accent:#0b7a63}
  html,body{background:#fff;color:#111;font-size:12px}
  main{max-width:none;padding:0}
  main > header,form,#ts,#status,.toolbar{display:none !important}
  .print-only{display:flex}
  .print-header{align-items:center;gap:14px;padding-bottom:12px;margin-bottom:14px;border-bottom:2px solid #0b7a63}
  .ph-title{font-size:1.5rem;font-weight:800}
  .ph-meta{color:#444;font-size:.85rem;word-break:break-all}
  .grade,.check,.warning,.cta{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .summary,.check,.warning,.cta{break-inside:avoid;box-shadow:none}
  .check{margin-bottom:8px}
  pre{white-space:pre-wrap;word-break:break-all;background:#f4f6fa}
  details summary{font-weight:700;color:#111;margin-bottom:6px}
  details{break-inside:auto}
  footer{margin-top:16px;font-size:.75rem}
}