:root{
  --bg:#0b1220;
  --card:#0f1a30;
  --card2:#0c1528;
  --text:#e6edf7;
  --muted:#a4b0c3;
  --border:rgba(255,255,255,.08);
  --accent:#7c5cff;
  --accent2:#21d4fd;
  --good:#2dd4bf;
  --bad:#fb7185;
  --shadow: 0 18px 45px rgba(0,0,0,.35);
  --bottom-nav-height: 72px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font: 14px/1.45 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(1100px 550px at 15% 0%, rgba(124,92,255,.35), transparent 60%),
    radial-gradient(900px 450px at 90% 20%, rgba(33,212,253,.22), transparent 60%),
    var(--bg);
}

.container{max-width:1060px;margin:0 auto;padding:18px}
.header{display:flex;align-items:center;justify-content:space-between;gap:14px}
.brand{display:flex;align-items:center;gap:12px}
.logo{
  width:44px;height:44px;border-radius:14px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display:grid;place-items:center;
  color:#07111f;font-weight:800;font-size:18px;
  box-shadow:var(--shadow);
}
.title{font-weight:800;font-size:16px}
.subtitle{color:var(--muted);font-size:12px}

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--border);
  border-radius:18px;
  padding:16px;
  box-shadow:var(--shadow);
  margin-top:14px;
  backdrop-filter: blur(8px);
}
.card-title{font-weight:800;margin-bottom:12px}
.grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
@media (max-width: 980px){ .grid{grid-template-columns:repeat(2,1fr)} }

.field{display:flex;flex-direction:column;gap:6px}
.field > span{color:var(--muted);font-size:12px}
.field-inline{flex-direction:row;align-items:center;gap:10px;padding-top:22px}

select,input[type="number"]{
  width:100%;
  background: rgba(10,16,30,.6);
  border:1px solid var(--border);
  border-radius:12px;
  color:var(--text);
  padding:10px 12px;
  outline:none;
}
input[type="email"], input[type="password"], input[type="text"]{
  width:100%;
  background: rgba(10,16,30,.6);
  border:1px solid var(--border);
  border-radius:12px;
  color:var(--text);
  padding:10px 12px;
  outline:none;
}
table.table th, table.table td { color: var(--text); }
table.table td { padding: 10px; border-bottom: 1px solid rgba(255,255,255,.06); vertical-align: top; }
select:disabled{opacity:.55}
input[type="checkbox"]{transform: translateY(1px)}

.row{display:flex;align-items:center;gap:10px;margin-top:12px}
.row-space{justify-content:space-between}
.muted{color:var(--muted)}

.btn{
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border:0;border-radius:12px;
  color:#07111f;
  padding:10px 14px;
  font-weight:800;
  cursor:pointer;
}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-ghost{
  background: rgba(255,255,255,.05);
  border:1px solid var(--border);
  color:var(--text);
}

.pill{
  border:1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius:999px;
  padding:6px 10px;
  color:var(--muted);
  font-size:12px;
}

.qmeta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.tag{
  border:1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius:999px;
  padding:5px 9px;
  font-size:12px;
  color:var(--muted);
}

.question{font-size:18px;font-weight:800;margin:10px 0 12px}
.options{display:grid;gap:10px}
.opt{
  text-align:left;
  width:100%;
  border:1px solid var(--border);
  background: rgba(10,16,30,.55);
  color:var(--text);
  border-radius:14px;
  padding:12px 12px;
  cursor:pointer;
  transition: transform .08s ease, border-color .12s ease, background .12s ease;
}
.opt:hover{transform: translateY(-1px); border-color: rgba(124,92,255,.55)}
.opt[aria-pressed="true"]{border-color: rgba(33,212,253,.75); background: rgba(33,212,253,.08)}
.opt.good{border-color: rgba(45,212,191,.75); background: rgba(45,212,191,.08)}
.opt.bad{border-color: rgba(251,113,133,.75); background: rgba(251,113,133,.08)}

.feedback{
  margin-top:12px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  border-radius:14px;
  padding:12px;
}
.feedback .k{font-weight:800}
.score{font-size:34px;font-weight:900;margin-top:6px}

.hidden{display:none !important}
.footer{padding-bottom:26px}

/* Mobile app-like nav */
body{padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px))}
.bottom-nav{
  position:fixed;
  left:0; right:0; bottom:0;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0px));
  background: rgba(11,18,32,.82);
  border-top: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(10px);
  z-index: 60;
}
.bottom-nav .bar{
  max-width:1060px;
  margin:0 auto;
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap:10px;
}
.nav-item{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  padding:10px 8px;
  border-radius:14px;
  text-decoration:none;
  color: var(--muted);
  border:1px solid rgba(255,255,255,.06);
  background: rgba(255,255,255,.03);
}
.nav-item svg{width:20px;height:20px}
.nav-item.active{
  color: var(--text);
  border-color: rgba(124,92,255,.55);
  background: rgba(124,92,255,.10);
}
.nav-item span{font-size:11px}
.nav-item.hidden{display:none !important}
.nav-btn{
  appearance:none;
  border:1px solid rgba(255,255,255,.06);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  border-radius:14px;
  padding:10px 8px;
  cursor:pointer;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
}
.nav-btn svg{width:20px;height:20px}
.nav-btn.active{
  color: var(--text);
  border-color: rgba(124,92,255,.55);
  background: rgba(124,92,255,.10);
}
.nav-btn span{font-size:11px}
.nav-btn.hidden{display:none !important}

/* Sections 2x2 when possible */
.sections-grid{display:grid;gap:14px}
@media (min-width: 720px){
  .sections-grid.cols-2{grid-template-columns: 1fr 1fr}
}

@media (min-width: 900px){
  body{padding-bottom: 0}
  .bottom-nav{display:none}
}

@media (max-width: 640px){
  .container{padding:14px}
  .header{position:sticky; top:0; z-index:40; background: rgba(11,18,32,.65); backdrop-filter: blur(10px); padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,.06)}
  .header-actions{display:none}
  .card{padding:14px;border-radius:16px}
  .question{font-size:16px}
  .btn{padding:10px 12px}
  .field-inline{padding-top:0}
  /* keep 2 columns for forms on mobile */
  .grid{grid-template-columns:repeat(2,1fr)}
  .bottom-nav .bar{grid-template-columns: repeat(4, 1fr)}
}

/* If more items exist (ex: Admin visible), auto-fit */
@supports (grid-template-columns: repeat(auto-fit, minmax(0, 1fr))) {
  .bottom-nav .bar{grid-template-columns: repeat(auto-fit, minmax(0, 1fr))}
}

.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:8px 10px;
  border-radius:10px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  cursor:pointer;
}
.icon-btn svg{width:16px;height:16px;display:block}
.icon-btn:hover{border-color: rgba(124,92,255,.55)}

.input-good{border-color: rgba(45,212,191,.75) !important; background: rgba(45,212,191,.08) !important;}

.modal{position:fixed;inset:0;z-index:50}
.modal-backdrop{position:absolute;inset:0;background: rgba(0,0,0,.55)}
.modal-panel{
  position:relative;
  margin: 6vh auto;
  max-width: 980px;
  width: calc(100% - 28px);
}

/* Keep quiz buttons above bottom nav (only when nav exists) */
@media (max-width: 899px){
  /* Quiz actions: fixed above bottom nav (iOS-safe) */
  .sticky-actions{
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 28px);
    max-width: 1060px;
    bottom: calc(var(--bottom-nav-height) + 12px);
    background: rgba(11,18,32,.82);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 14px;
    padding: 10px;
    z-index: 80; /* above bottom nav */
    margin-top: 0;
  }
  /* Prevent content being hidden behind fixed action bar */
  #quizCard{ padding-bottom: 190px; }
}