/* Puramu Checker Engine v2 - giao dien lam bai 2 cot. Scope duoi .puramu-quiz de khong dung theme. */
.puramu-quiz{
  --bg1:#eef2ff;--card:#ffffff;--soft:#f3f5fc;--soft2:#eef1fb;
  --accent:#6c5ce7;--accent2:#00a8c6;--text:#1f2433;--muted:#5b6477;--line:#e4e8f4;
  --good:#16a05f;--review:#7c5cff;--bad:#e23d5b;--radius:16px;
  display:block;max-width:1080px;margin:24px auto;
  font-family:'Roboto','Segoe UI',system-ui,-apple-system,Arial,sans-serif;color:var(--text);
  font-size:16px;line-height:1.55;
}
.puramu-quiz *{box-sizing:border-box}
/* Reset margin do theme chen vao (tranh ho khoang trong giua the/dap an). */
.puramu-quiz .puramu-stage>*,.puramu-quiz .puramu-row>*,.puramu-quiz .puramu-main>*,.puramu-quiz .puramu-opt,.puramu-quiz .puramu-navbar>*,.puramu-quiz .puramu-q-head>*{margin:0 !important}
/* Chan theme ep in-hoa / doi font cho vung noi dung (giu in hoa o .puramu-badge). */
.puramu-quiz .puramu-result-text,.puramu-quiz .puramu-result-text *,
.puramu-quiz .puramu-result-h,.puramu-quiz .puramu-score-label,
.puramu-quiz .puramu-guide,.puramu-quiz .puramu-guide *,
.puramu-quiz .puramu-qtext,.puramu-quiz .puramu-opt,.puramu-quiz .puramu-opt *,
.puramu-quiz .puramu-btn,.puramu-quiz .puramu-h1,.puramu-quiz .puramu-lead,.puramu-quiz .puramu-lead *,
.puramu-quiz .puramu-quiz-title,.puramu-quiz .puramu-side-title,.puramu-quiz .puramu-prow,
.puramu-quiz .puramu-review-btn,.puramu-quiz .puramu-nav-back,.puramu-quiz .puramu-nav-next,
.puramu-quiz .puramu-legend,.puramu-quiz .puramu-gate-title,.puramu-quiz .puramu-gate-sub,.puramu-quiz .puramu-footnote{
  text-transform:none !important;letter-spacing:normal !important;
  font-family:'Roboto','Segoe UI',system-ui,-apple-system,Arial,sans-serif !important;
}
.puramu-quiz .puramu-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:0 12px 36px -20px rgba(60,70,120,.4)}
.puramu-quiz .puramu-pad{padding:30px}
.puramu-quiz .puramu-hide{display:none !important}
/* intro/gate/result: the hep, can giua */
.puramu-quiz .puramu-hero,.puramu-quiz [data-el="gate"],.puramu-quiz [data-el="result"]{max-width:700px;margin-left:auto;margin-right:auto}

/* Intro */
.puramu-quiz .puramu-hero{text-align:center;overflow:hidden}
.puramu-quiz .puramu-badge{display:inline-block;border-radius:99px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:#fff;
  background:linear-gradient(90deg,var(--accent),var(--accent2));padding:6px 14px;margin-bottom:18px;font-weight:600;line-height:1.4}
.puramu-quiz .puramu-h1{font-size:26px;line-height:1.28;margin:0 0 12px;color:var(--text);font-weight:800}
.puramu-quiz .puramu-lead{color:var(--muted);font-size:15.5px;line-height:1.7;max-width:560px;margin:0 auto 24px;text-align:left}
.puramu-quiz .puramu-lead p{margin:0 0 10px}
.puramu-quiz .puramu-intro-msg{color:var(--bad);font-size:14px;font-weight:600;margin-top:14px;min-height:18px}
.puramu-quiz .puramu-vers{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:6px 0 16px}
.puramu-quiz .puramu-ver-btn{background:var(--soft);border:1.5px solid var(--line);color:var(--text);
  padding:10px 18px;border-radius:14px;font-size:15px;cursor:pointer;transition:.18s;line-height:1.3;font-weight:600}
.puramu-quiz .puramu-ver-btn:hover{border-color:var(--accent)}
.puramu-quiz .puramu-ver-btn.puramu-on{background:linear-gradient(90deg,var(--accent),var(--accent2));border-color:transparent;color:#fff}
.puramu-quiz .puramu-verintro{margin-bottom:22px}
.puramu-quiz .puramu-ver-desc{font-weight:700;color:var(--accent);margin-bottom:8px}
.puramu-quiz .puramu-btn{appearance:none;border:0;cursor:pointer;font-size:16px;font-weight:700;padding:13px 26px;border-radius:12px;color:#fff;
  background:linear-gradient(90deg,var(--accent),var(--accent2));box-shadow:0 10px 22px -10px rgba(108,92,231,.8);transition:transform .15s}
.puramu-quiz .puramu-btn:hover{transform:translateY(-2px)}
.puramu-quiz .puramu-btn:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:grayscale(.4);box-shadow:none}

/* ===== KHU LAM BAI 2 COT (flex, khong keo gian) ===== */
.puramu-quiz .puramu-stage{display:flex;flex-direction:column;gap:18px}
.puramu-quiz .puramu-headcard{padding:22px 26px}
.puramu-quiz .puramu-row{display:flex;gap:18px;align-items:flex-start}
.puramu-quiz .puramu-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:16px}
.puramu-quiz .puramu-side{flex:0 0 330px}

/* The dau: tieu de + timer + tien do */
.puramu-quiz .puramu-head-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}
.puramu-quiz .puramu-quiz-title{font-size:20px;font-weight:800;color:var(--text);line-height:1.3}
.puramu-quiz .puramu-timer{flex:0 0 auto;background:#eef2ff;color:#6c5ce7;font-weight:700;font-variant-numeric:tabular-nums;
  white-space:nowrap;padding:7px 14px;border-radius:999px;font-size:15px}
.puramu-quiz .puramu-timer-low{background:#fde2e2;color:var(--bad);animation:puramu-pulse 1s infinite}
.puramu-quiz .puramu-bar{height:9px;background:var(--soft);border-radius:99px;overflow:hidden}
.puramu-quiz .puramu-bar>i{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,#6c5ce7,#00a8c6);transition:width .3s ease}
.puramu-quiz .puramu-prow{display:flex;justify-content:space-between;gap:10px;font-size:13.5px;color:var(--muted);margin-top:10px}

/* The cau hoi */
.puramu-quiz .puramu-qcard{padding:26px}
.puramu-quiz .puramu-q-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:20px}
.puramu-quiz .puramu-qnum{flex:0 0 auto;width:38px;height:38px;border-radius:50%;background:#eaf0ff;color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.puramu-quiz .puramu-qtext{font-size:19px;font-weight:700;line-height:1.45;color:var(--text);padding-top:6px}
.puramu-quiz .puramu-opts{display:flex;flex-direction:column;gap:12px}
.puramu-quiz .puramu-opt{display:flex;align-items:center;gap:14px;text-align:left;width:100%;cursor:pointer;
  background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:15px 18px;font-size:16px;color:var(--text);transition:.15s}
.puramu-quiz .puramu-opt:hover{border-color:var(--accent);background:var(--soft2)}
.puramu-quiz .puramu-opt-letter{flex:0 0 auto;width:30px;height:30px;border-radius:50%;border:1.5px solid #c7cfe0;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;color:var(--muted);transition:.15s}
.puramu-quiz .puramu-opt-text{flex:1;font-weight:400;line-height:1.35}
.puramu-quiz .puramu-opt.puramu-sel{border-color:var(--accent);background:#eef0ff}
.puramu-quiz .puramu-opt.puramu-sel .puramu-opt-letter{background:#6c5ce7;border-color:#6c5ce7;color:#fff}

/* Nut danh dau xem lai */
.puramu-quiz .puramu-review-row{display:flex;justify-content:center;margin-top:18px}
.puramu-quiz .puramu-review-btn{cursor:pointer;border:1.5px solid #e3d9ff;background:#f4efff;color:var(--review);font-weight:600;font-size:14px;
  padding:9px 18px;border-radius:10px;transition:.15s}
.puramu-quiz .puramu-review-btn:hover{border-color:var(--review)}
.puramu-quiz .puramu-review-btn.puramu-on{background:#7c5cff;border-color:#7c5cff;color:#fff}

/* Dieu huong duoi */
.puramu-quiz .puramu-navbar{display:flex;justify-content:space-between;gap:12px}
.puramu-quiz .puramu-nav-back,.puramu-quiz .puramu-nav-next{cursor:pointer;border:0;border-radius:10px;padding:12px 24px;font-size:15px;font-weight:700;transition:.15s}
.puramu-quiz .puramu-nav-back{background:var(--soft);border:1.5px solid var(--line);color:var(--text)}
.puramu-quiz .puramu-nav-back:hover{border-color:var(--accent)}
.puramu-quiz .puramu-nav-back:disabled{opacity:.4;cursor:not-allowed}
.puramu-quiz .puramu-nav-next{background:linear-gradient(90deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 8px 18px -10px rgba(108,92,231,.8)}
.puramu-quiz .puramu-nav-next:hover{transform:translateY(-1px)}
.puramu-quiz .puramu-nav-next.puramu-finish{background:linear-gradient(90deg,var(--good),#23c08a)}

/* Bang theo doi (cot phai) */
.puramu-quiz .puramu-sidecard{padding:20px}
.puramu-quiz .puramu-side-title{text-align:center;font-weight:700;font-size:16px;margin-bottom:16px;color:var(--text)}
.puramu-quiz .puramu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(34px,1fr));gap:8px;margin-bottom:16px}
.puramu-quiz .puramu-cell{aspect-ratio:1;min-width:0;display:flex;align-items:center;justify-content:center;border-radius:50%;
  background:#eef1f7;border:2px solid transparent;color:var(--muted);font-size:13px;font-weight:700;cursor:pointer;padding:0;transition:.12s}
.puramu-quiz .puramu-cell:hover{filter:brightness(.96);transform:translateY(-1px)}
.puramu-quiz .puramu-cell-done{background:#16a05f;color:#fff}
.puramu-quiz .puramu-cell-review{background:#7c5cff;color:#fff}
.puramu-quiz .puramu-cell-cur{box-shadow:0 0 0 3px #6c5ce7;z-index:1}
.puramu-quiz .puramu-submit-big{width:100%;cursor:pointer;border:0;border-radius:10px;padding:13px;font-size:16px;font-weight:800;color:#fff;
  background:linear-gradient(90deg,#16a05f,#23c08a);box-shadow:0 10px 22px -10px rgba(22,160,95,.85);transition:.15s;margin-bottom:14px}
.puramu-quiz .puramu-submit-big:hover{filter:brightness(1.05)}
.puramu-quiz .puramu-submit-big.puramu-shake{animation:puramu-shake .5s}
.puramu-quiz .puramu-submit-warn{color:var(--bad);font-weight:600;font-size:13.5px;text-align:center;line-height:1.4;margin:-4px 0 12px;min-height:0}
.puramu-quiz .puramu-submit-warn:empty{display:none}
.puramu-quiz .puramu-legend{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.puramu-quiz .puramu-lg{display:inline-flex;align-items:center;gap:6px}
.puramu-quiz .puramu-lg::before{content:"";width:11px;height:11px;border-radius:50%;display:inline-block}
.puramu-quiz .puramu-lg-done::before{background:#16a05f}
.puramu-quiz .puramu-lg-todo::before{background:#cdd4e1}
.puramu-quiz .puramu-lg-review::before{background:#7c5cff}

@keyframes puramu-shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
@keyframes puramu-pulse{0%,100%{opacity:1}50%{opacity:.6}}

/* Cong bai huong dan */
.puramu-quiz .puramu-gate-title{font-size:21px;margin-bottom:6px;text-align:center;color:var(--text);font-weight:700}
.puramu-quiz .puramu-gate-sub{color:var(--muted);text-align:center;margin-bottom:16px;font-size:14px}
.puramu-quiz .puramu-guide{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:16px;
  line-height:1.7;font-size:15.5px;max-height:48vh;overflow:auto;color:#1f2433}
.puramu-quiz .puramu-guide img{max-width:100%;height:auto;border-radius:8px;margin:8px 0}
.puramu-quiz .puramu-guide a{color:var(--accent)}
.puramu-quiz .puramu-codebox{display:flex;gap:10px;margin-top:8px}
.puramu-quiz .puramu-codebox input{flex:1;background:#f4f1ff;border:2px solid var(--accent);color:var(--text);border-radius:12px;
  padding:15px 16px;font-size:18px;font-weight:700;text-align:center;box-shadow:0 0 0 4px rgba(108,92,231,.12);transition:.15s}
.puramu-quiz .puramu-codebox input::placeholder{color:var(--accent);opacity:.75;font-weight:700}
.puramu-quiz .puramu-codebox input:focus{outline:0;border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px rgba(108,92,231,.24)}
.puramu-quiz .puramu-msg{min-height:20px;font-size:14px;margin-top:10px;text-align:center}
.puramu-quiz .puramu-msg.puramu-err{color:var(--bad);font-weight:600}
.puramu-quiz .puramu-copy-btn{display:inline-flex;align-items:center;gap:8px;cursor:pointer;border:0;
  background:linear-gradient(90deg,var(--accent),var(--accent2));color:#fff;font-weight:700;font-size:15px;
  padding:8px 14px;border-radius:9px;margin:4px 2px;vertical-align:middle;line-height:1.3;text-transform:none !important}
.puramu-quiz .puramu-copy-btn:hover{filter:brightness(1.07)}
.puramu-quiz .puramu-copy-btn.puramu-copied{background:linear-gradient(90deg,var(--good),#23c08a)}
.puramu-quiz .puramu-copy-kw{white-space:normal}
.puramu-quiz .puramu-copy-ic{font-size:17px;line-height:1;opacity:.95}

/* Ket qua */
.puramu-quiz .puramu-res-head{text-align:center;margin-bottom:18px}
.puramu-quiz .puramu-score-num{font-size:52px;font-weight:800;line-height:1;
  background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.puramu-quiz .puramu-score-label{font-size:15px;color:var(--muted);margin-top:4px}
.puramu-quiz .puramu-result-text{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:16px 18px;line-height:1.7;font-size:15.5px}
.puramu-quiz .puramu-result-text p{margin:0 0 10px}
.puramu-quiz .puramu-result-text p:last-child{margin:0}
.puramu-quiz .puramu-result-block{margin-bottom:14px}
.puramu-quiz .puramu-result-h{font-size:16px;font-weight:700;color:var(--accent);margin:0 0 8px}
.puramu-quiz .puramu-warning{color:var(--bad);font-weight:700}
.puramu-quiz .puramu-footnote{color:var(--muted);font-size:12px;text-align:center;margin-top:16px}
.puramu-quiz .puramu-spin{color:var(--muted);text-align:center;padding:30px}

/* ===== Tablet/Mobile: xep 1 cot (dau -> bang theo doi -> cau hoi) ===== */
@media(max-width:860px){
  .puramu-quiz{margin:12px auto}
  .puramu-quiz .puramu-row{flex-direction:column;align-items:stretch}
  .puramu-quiz .puramu-side{flex-basis:auto;order:-1}
  /* Luoi tren mobile: gioi han chieu cao + cuon trong khung cho gon */
  .puramu-quiz .puramu-grid{max-height:230px;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:2px}
}
@media(max-width:560px){
  .puramu-quiz{font-size:15px}
  .puramu-quiz .puramu-pad{padding:18px}
  .puramu-quiz .puramu-headcard{padding:16px 18px}
  .puramu-quiz .puramu-qcard{padding:18px}
  .puramu-quiz .puramu-h1{font-size:21px}
  .puramu-quiz .puramu-quiz-title{font-size:17px}
  .puramu-quiz .puramu-qtext{font-size:17px}
  .puramu-quiz .puramu-opt{font-size:15px;padding:13px 14px;gap:11px}
  .puramu-quiz .puramu-opt-letter{width:27px;height:27px;font-size:13px}
  .puramu-quiz .puramu-nav-back,.puramu-quiz .puramu-nav-next{padding:11px 16px;font-size:14px;flex:1}
  .puramu-quiz .puramu-codebox{flex-direction:column}
  .puramu-quiz .puramu-codebox input{font-size:16px}
  .puramu-quiz .puramu-score-num{font-size:44px}
}