*{box-sizing:border-box}

:root{
  --bg:#080b11;
  --panel:#0e131c;
  --panel2:#111827;
  --text:#f8fafc;
  --muted:#aab4c5;
  --cyan:#00e5ff;
  --blue:#2563eb;
  --purple:#7c3aed;
  --pink:#ff2d95;
  --green:#16a34a;
  --orange:#e87916;
  --line:rgba(255,255,255,.10);
}

html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:
    radial-gradient(circle at 12% 8%,rgba(0,229,255,.08),transparent 25%),
    radial-gradient(circle at 88% 10%,rgba(255,45,149,.08),transparent 24%),
    var(--bg);
  color:var(--text);
  font-family:"Noto Sans Bengali",Arial,Helvetica,sans-serif;
  line-height:1.65;
}

a{text-decoration:none;color:inherit}
button,input,select{font:inherit}
button{touch-action:manipulation}

.qg-site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(8,11,17,.84);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}

.qg-navbar{
  width:min(1180px,94%);
  min-height:72px;
  margin:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}

.qg-brand{
  font-family:Arial,Helvetica,sans-serif;
  font-weight:900;
  font-size:18px;
  letter-spacing:1px;
  background:linear-gradient(90deg,var(--cyan),var(--blue),var(--purple),var(--pink));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

.qg-nav-links{display:flex;align-items:center;gap:10px}
.qg-nav-links a{
  padding:9px 12px;
  border:1px solid var(--line);
  border-radius:9px;
  color:#dbe7f5;
  font-family:Arial,Helvetica,sans-serif;
  font-size:10px;
  font-weight:900;
  letter-spacing:.7px;
  transition:.25s;
}
.qg-nav-links a:hover{border-color:rgba(0,229,255,.4);color:var(--cyan)}

.qg-page{width:min(1120px,92%);margin:auto;padding:58px 0 90px}

.qg-hero{
  display:flex;
  gap:22px;
  align-items:center;
  padding:24px 0 38px;
  border-bottom:1px solid var(--line);
}

.hero-icon{
  width:66px;
  min-width:66px;
  height:66px;
  border-radius:18px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,var(--blue),var(--purple),var(--pink));
  box-shadow:0 14px 38px rgba(124,58,237,.26);
  font-family:Arial,Helvetica,sans-serif;
  font-size:29px;
  font-weight:950;
}

.eyebrow{
  margin:0 0 7px;
  color:var(--cyan);
  font-family:Arial,Helvetica,sans-serif;
  font-size:11px;
  font-weight:900;
  letter-spacing:1.7px;
}

h1,h2,h3,p{margin-top:0}
h1{margin-bottom:0;font-size:clamp(34px,5vw,56px);line-height:1.12}
h2{margin-bottom:0;font-size:clamp(25px,3.5vw,34px);line-height:1.2}
.subtitle{max-width:850px;margin:12px 0 0;color:#c1cada}

.qg-panel,.results{
  margin-top:28px;
  padding:28px;
  border:1px solid var(--line);
  border-radius:22px;
  background:linear-gradient(180deg,rgba(15,22,34,.97),rgba(10,16,25,.97));
  box-shadow:0 22px 65px rgba(0,0,0,.28);
}

.panel-head,.results-head{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:22px;
}
.panel-head p,.results-note{margin:8px 0 0;color:var(--muted)}

.back-btn{
  flex:0 0 auto;
  color:white;
  background:#202b3d;
  border:1px solid #334157;
  padding:10px 14px;
  border-radius:10px;
  font-weight:700;
  font-size:13px;
  transition:.25s;
}
.back-btn:hover{border-color:rgba(0,229,255,.45);color:var(--cyan)}

.upload-zone{
  margin-top:24px;
  border:2px dashed #3a4a62;
  border-radius:18px;
  padding:42px 20px;
  text-align:center;
  background:#0a1019;
  outline:none;
  cursor:pointer;
  transition:.25s;
}
.upload-zone:hover,.upload-zone:focus-visible,.upload-zone.dragover{
  border-color:var(--cyan);
  background:rgba(0,229,255,.04);
  box-shadow:0 0 0 4px rgba(0,229,255,.04);
}
.upload-icon{font-size:42px;color:var(--cyan);line-height:1}
.upload-zone h3{margin:12px 0 6px;font-size:22px}
.upload-zone p{margin-bottom:15px;color:var(--muted)}

.file-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:11px 18px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--blue),var(--purple));
  border:1px solid rgba(255,255,255,.12);
  color:#fff;
  font-weight:800;
  cursor:pointer;
}
.file-btn input{display:none}
.selected-file{margin-top:14px;color:#dce5f3;font-size:13px;word-break:break-word}
.selected-file.ready{color:#8df7b3}

.settings-grid{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:14px;
  margin-top:22px;
}
.settings-grid label{display:flex;flex-direction:column;gap:7px;color:#c8d2df;font-weight:600;font-size:13px}
.settings-grid input,.settings-grid select{
  width:100%;
  min-width:0;
  padding:12px 13px;
  border-radius:10px;
  border:1px solid #324158;
  background:#09101a;
  color:white;
  outline:none;
}
.settings-grid input:focus,.settings-grid select:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,229,255,.06)}
.settings-grid select{appearance:auto;cursor:pointer}
.settings-grid select option{background:#09101a;color:#fff}
.required-star{color:#ff5d73;font-weight:900}

.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.info-box{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:14px 16px;
  border-radius:12px;
  background:#111c2b;
  color:#aebbd0;
  border:1px solid #26364e;
  font-size:13px;
}
.info-box strong{color:#fff}

.actions{display:flex;gap:12px;margin-top:20px}
.primary-btn,.secondary-btn,.download-all{
  border:0;
  border-radius:11px;
  padding:12px 18px;
  font-weight:850;
  cursor:pointer;
  transition:.25s;
}
.primary-btn{background:linear-gradient(135deg,#20a75e,#168a4b);color:white}
.primary-btn:hover:not(:disabled),.download-all:hover:not(:disabled),.secondary-btn:hover{transform:translateY(-2px)}
.primary-btn:disabled,.download-all:disabled{opacity:.45;cursor:not-allowed;transform:none}
.secondary-btn{background:#273244;color:white}
.download-all{background:linear-gradient(135deg,var(--blue),var(--purple));color:white;white-space:nowrap}

.status{min-height:26px;margin-top:15px;color:#9fe8c0;font-size:13px}
.status.error{color:#ff9b9b}
.status.warning{color:#ffd58a}

.debug{
  display:none;
  margin-top:14px;
  max-height:240px;
  overflow:auto;
  white-space:pre-wrap;
  word-break:break-word;
  background:#060a10;
  border:1px solid #202b3c;
  padding:12px;
  border-radius:10px;
  color:#aeb8c8;
  font-size:12px;
}

.results{display:none}
.results.visible{display:block}
.set-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:22px}
.set-card{
  padding:23px;
  border:1px solid #273445;
  border-radius:18px;
  background:
    radial-gradient(circle at 100% 0,rgba(124,58,237,.10),transparent 38%),
    #0a111b;
}
.set-card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:17px}
.set-card h3{margin:0;font-size:34px;color:#72dfff;line-height:1}
.set-card .meta{color:#9eabbd;font-size:12px;text-align:right}
.download-links{display:flex;flex-direction:column;gap:9px}
.download-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  color:white;
  padding:12px 13px;
  border-radius:9px;
  font-weight:800;
  font-size:13px;
  transition:.2s;
}
.download-links a:hover{transform:translateX(3px);filter:brightness(1.08)}
.q-link{background:#15803d}
.a-link{background:#c65e0b}
.m-link{background:#6d28a9}

.qg-footer{text-align:center;padding:0 20px 34px;color:#748096;font-size:12px}

@media(max-width:850px){
  .settings-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .info-grid,.set-grid{grid-template-columns:1fr}
  .panel-head,.results-head{align-items:flex-start;flex-direction:column}
  .back-btn{width:100%;text-align:center}
  .download-all{width:100%}
}

@media(max-width:580px){
  .qg-navbar{min-height:66px}
  .qg-brand{font-size:15px}
  .qg-nav-links a:first-child{display:none}
  .qg-nav-links a{font-size:9px;padding:8px 9px}
  .qg-page{width:94%;padding-top:28px}
  .qg-hero{align-items:flex-start;gap:15px}
  .hero-icon{width:50px;min-width:50px;height:50px;border-radius:14px;font-size:22px}
  .qg-panel,.results{padding:18px;border-radius:17px}
  .upload-zone{padding:30px 13px}
  .settings-grid{grid-template-columns:1fr}
  .actions{flex-direction:column}
  .primary-btn,.secondary-btn{width:100%}
}

/* ===== V2: table-based auto generator ===== */
.upload-zone.busy{pointer-events:none;opacity:.78}
.detected{
  display:inline-flex;
  margin-top:13px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(22,163,74,.35);
  background:rgba(22,163,74,.08);
  color:#8df7b3;
  font-size:12px;
  font-weight:800;
}
.detected[hidden]{display:none}
.set-badge{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:66px;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(0,229,255,.08);
  border:1px solid rgba(0,229,255,.25);
  color:var(--cyan);
  font:900 10px/1 Arial,Helvetica,sans-serif;
  letter-spacing:1px;
  margin-bottom:11px;
}
.set-card h3{font-size:30px;margin:0 0 5px}
.set-card p{color:var(--muted);font-size:13px;margin:0 0 16px}
.set-download{
  width:100%;
  min-height:44px;
  border:0;
  border-radius:10px;
  background:linear-gradient(135deg,#168a4b,#20a75e);
  color:#fff;
  font-weight:850;
  cursor:pointer;
  padding:10px 12px;
  transition:.2s;
  word-break:break-word;
}
.set-download:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(22,163,74,.18)}
@media(max-width:900px){.settings-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.settings-grid{grid-template-columns:1fr}.set-grid{grid-template-columns:1fr}}

.set-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.set-actions button,.history-tools button{border:0;border-radius:9px;padding:10px 12px;color:white;font-weight:800;cursor:pointer;background:#168caa}
.set-actions button[data-action="question"],.history-tools button[data-action="question"]{background:#199b58}
.set-actions button[data-action="answer"],.history-tools button[data-action="answer"]{background:#da7920}
.set-actions button[data-action="merged"],.history-tools button[data-action="merged"]{background:#823cac}
.history-list{display:grid;gap:12px;margin-top:22px}
.history-item{border:1px solid #324158;background:#0a111b;border-radius:13px;overflow:hidden}
.history-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px}
.history-item summary::-webkit-details-marker{display:none}
.history-item summary strong{display:block;overflow-wrap:anywhere}
.history-item summary small{display:block;color:var(--muted);font-size:12px;margin-top:4px}
.history-open{color:var(--cyan);white-space:nowrap;font-size:13px}
.history-body{border-top:1px solid var(--line);padding:16px}
.history-tools{display:flex;flex-wrap:wrap;gap:8px}
.history-tools button{font-size:12px;background:#245982}
.history-tools button.danger{background:#a83648}
.history-sets{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:16px}
.history-set{border:1px solid #29384b;border-radius:11px;padding:13px;background:#101c2b}
.history-set strong{display:block;margin-bottom:9px}
.preview-dialog{width:min(850px,94vw);max-height:85vh;border:1px solid #345073;border-radius:18px;color:var(--text);background:#101927;padding:0;box-shadow:0 25px 80px #000a}
.preview-dialog::backdrop{background:#000b}
.preview-header{position:sticky;top:0;background:#14243b;display:flex;align-items:center;justify-content:space-between;padding:16px 22px;z-index:1}
.preview-header h2{font-size:22px}.preview-header button{padding:5px 13px}
.preview-content{padding:20px 24px}.preview-note{color:#aebdd0;font-size:13px}
.preview-question{border-top:1px solid #334157;padding:16px 0;overflow-wrap:anywhere}
.preview-question h3{font-size:17px}.preview-question ol{padding-left:24px}.preview-question li{margin:4px 0}
@media(max-width:650px){.history-sets{grid-template-columns:1fr}.set-actions{grid-template-columns:1fr}}

.validation-issues{margin-top:16px;padding:17px 20px;border:1px solid #b45353;border-radius:13px;background:#3b1820;color:#ffe5e5}
.validation-issues[hidden]{display:none}
.validation-issues h3{margin:0 0 7px;font-size:18px}
.validation-issues p,.issue-dialog p{margin:0 0 12px}
.validation-issues ol,.issue-dialog ol{margin:0;padding-left:28px;max-height:290px;overflow:auto}
.validation-issues li,.issue-dialog li{padding:7px 0;border-bottom:1px solid #ffffff20;overflow-wrap:anywhere}
.validation-issues small,.issue-dialog small{color:#ffd0d0}
.issue-dialog{border-color:#b45353}