@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@700;800&display=swap');

:root{
  --bg:#f6f7fb;
  --bg-accent:#eef2ff;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --surface-hover:#f1f5f9;
  --text:#0f172a;
  --text-soft:#334155;
  --muted:#64748b;
  --muted-2:#94a3b8;
  --border:#e2e8f0;
  --border-strong:#cbd5e1;
  --primary:#1d4ed8;
  --primary-hover:#1e40af;
  --primary-soft:#eff6ff;
  --primary-ring:rgba(29,78,216,.18);
  --success:#0e8a4a;
  --success-soft:#dcfce7;
  --success-ring:rgba(14,138,74,.18);
  --error:#dc2626;
  --error-soft:#fee2e2;
  --warn:#b45309;
  --warn-soft:#fffbeb;
  --radius:16px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.06);
  --shadow:0 4px 12px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.04);
  --shadow-lg:0 10px 30px rgba(15,23,42,.08), 0 20px 50px rgba(15,23,42,.05);
  --ring:0 0 0 4px var(--primary-ring);
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#090e1a;
    --bg-accent:#0f1b33;
    --surface:#111c2e;
    --surface-2:#13203a;
    --surface-hover:#1a2b4a;
    --text:#f1f5f9;
    --text-soft:#cbd5e1;
    --muted:#94a3b8;
    --muted-2:#64748b;
    --border:rgba(255,255,255,.08);
    --border-strong:rgba(255,255,255,.12);
    --primary:#3b82f6;
    --primary-hover:#60a5fa;
    --primary-soft:rgba(59,130,246,.14);
    --primary-ring:rgba(59,130,246,.22);
    --success-soft:rgba(16,185,129,.14);
    --error-soft:rgba(239,68,68,.14);
    --warn-soft:rgba(251,191,36,.12);
    --shadow-sm:0 1px 2px rgba(0,0,0,.3);
    --shadow:0 10px 30px rgba(0,0,0,.35);
    --shadow-lg:0 20px 50px rgba(0,0,0,.45);
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body{
  background:
    radial-gradient(1100px 500px at 10% -10%, #dbeafe 0%, transparent 60%),
    radial-gradient(900px 600px at 95% 0%, #e0e7ff 0%, transparent 55%),
    radial-gradient(800px 400px at 50% 115%, #f1f5ff 0%, transparent 60%),
    var(--bg);
  min-height:100vh;
}
@media (prefers-color-scheme: dark){
  body{
    background:
      radial-gradient(900px 500px at 15% -5%, rgba(59,130,246,.22) 0%, transparent 60%),
      radial-gradient(700px 500px at 90% 0%, rgba(99,102,241,.18) 0%, transparent 60%),
      var(--bg);
  }
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
::selection{background:var(--primary);color:#fff}

/* ---------- Topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.78);
  backdrop-filter:blur(16px) saturate(180%);
  -webkit-backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid rgba(226,232,240,.9);
  box-shadow:0 1px 0 rgba(15,23,42,.04);
}
@media (prefers-color-scheme: dark){
  .topbar{background:rgba(17,28,46,.75);border-bottom-color:rgba(255,255,255,.07)}
}
.topbar-inner{
  max-width:1440px;margin:0 auto;padding:14px 20px;
  display:flex;gap:16px;align-items:center;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg, #1d4ed8 0%, #4f46e5 55%, #7c3aed 100%);
  color:#fff;font-weight:800;font-family:"Plus Jakarta Sans",Inter,sans-serif;
  font-size:15px;letter-spacing:-.02em;
  box-shadow:0 8px 20px rgba(29,78,216,.28), 0 2px 6px rgba(29,78,216,.2);
  flex-shrink:0;
}
.brand-text h1{
  margin:0;line-height:1.15;
  font-family:"Plus Jakarta Sans",Inter,sans-serif;
  font-weight:800;font-size:16.5px;letter-spacing:-.03em;color:var(--text);
}
.brand-text h1 span{
  display:block;font-weight:600;font-size:12.5px;letter-spacing:.02em;
  color:var(--muted);margin-top:1px;
}
.brand-text h1 span b{color:var(--primary);font-weight:700}
.meta{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:500;color:var(--muted);
  background:var(--surface-2);border:1px solid var(--border);
  padding:6px 12px;border-radius:var(--radius-pill);
  white-space:nowrap;
}
@media(max-width:900px){.meta{display:none}}

.top-actions{margin-left:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.top-actions button{
  appearance:none;
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;font-weight:600;
  padding:8px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--border);background:var(--surface);
  color:var(--text-soft);cursor:pointer;
  box-shadow:var(--shadow-sm);
  transition:all .18s cubic-bezier(.2,.8,.2,1);
}
.top-actions button:hover{
  transform:translateY(-1px);
  border-color:var(--border-strong);
  box-shadow:var(--shadow);
  background:var(--surface);
}
.top-actions button:active{transform:translateY(0) scale(.98)}
.top-actions button:focus-visible{outline:none;box-shadow:var(--ring)}
#btn-timer{
  background:var(--text);color:#fff;border-color:var(--text);
  min-width:96px;justify-content:center;font-variant-numeric:tabular-nums;
}
#btn-timer:hover{background:#1e293b;color:#fff}
@media (prefers-color-scheme: dark){#btn-timer{background:#fff;color:#0f172a;border-color:#fff}}
#timer{font-weight:800;letter-spacing:.02em}

/* ---------- Layout ---------- */
.layout{max-width:1440px;margin:0 auto;display:grid;grid-template-columns:300px 1fr 380px;gap:18px;padding:20px 20px 28px}
@media(max-width:1180px){.layout{grid-template-columns:280px 1fr} .rightpanel{grid-column:1/-1}}
@media(max-width:740px){.layout{grid-template-columns:1fr;gap:14px;padding:14px} .sidebar{order:2} .rightpanel{order:3} .topbar-inner{padding:12px 14px}}

/* ---------- Panels ---------- */
.sidebar,.rightpanel{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:16px;
  height:fit-content;
  position:sticky;top:72px;
  box-shadow:var(--shadow);
}
@media(max-width:740px){.sidebar,.rightpanel{position:static}}
.sidebar-section + .sidebar-section{margin-top:18px;padding-top:18px;border-top:1px solid var(--border)}
.sidebar h2{
  margin:0 0 10px;
  font-size:11px;font-weight:700;
  text-transform:uppercase;letter-spacing:.08em;color:var(--muted);
  display:flex;align-items:center;gap:8px;
}
.sidebar h2::after{content:"";flex:1;height:1px;background:var(--border);margin-left:8px;opacity:.7}
#progress-text{font-weight:700;color:var(--primary);letter-spacing:0;text-transform:none;font-size:12px}

/* Filters */
.filters{display:flex;flex-wrap:wrap;gap:7px}
.filters button{
  appearance:none;
  padding:6px 12px;
  border:1px solid var(--border);background:var(--surface-2);
  border-radius:var(--radius-pill);cursor:pointer;
  font-size:13px;font-weight:600;color:var(--text-soft);
  transition:all .15s ease;
}
.filters button:hover{border-color:var(--border-strong);background:var(--surface-hover);transform:translateY(-1px)}
.filters button.active{
  background:var(--primary);color:#fff;border-color:var(--primary);
  box-shadow:0 6px 16px rgba(29,78,216,.28);
}
.filters button:focus-visible{outline:none;box-shadow:var(--ring)}
.prov-switch{
  display:flex;gap:4px;
  background:var(--surface-2);border:1px solid var(--border);
  padding:4px;border-radius:var(--radius-pill);
}
.prov-switch button{
  flex:1;appearance:none;
  padding:7px 10px;border-radius:var(--radius-pill);
  border:0;background:transparent;
  font-size:13px;font-weight:700;color:var(--muted);
  cursor:pointer;transition:all .15s ease;
}
.prov-switch button:hover:not(.active){background:var(--surface-hover);color:var(--text)}
.prov-switch button.active{
  background:var(--primary);color:#fff;
  box-shadow:0 4px 12px rgba(29,78,216,.22);
}
.prov-switch button:focus-visible{outline:none;box-shadow:var(--ring)}
.prov-meta{font-size:11.5px;color:var(--muted);margin-top:6px;line-height:1.4}
.prov-meta:empty{display:none}

.check{
  display:flex;gap:8px;align-items:center;
  font-size:13px;font-weight:500;color:var(--text-soft);margin-top:10px;
  cursor:pointer;user-select:none;
}
.check input{accent-color:var(--primary);width:16px;height:16px}

/* Grid nav */
.grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}
.grid button{
  aspect-ratio:1;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--border);background:var(--surface-2);
  border-radius:12px;cursor:pointer;
  font-weight:700;font-size:13.5px;color:var(--text-soft);
  transition:all .15s cubic-bezier(.2,.8,.2,1);
  position:relative;overflow:hidden;
}
.grid button:hover{transform:translateY(-1px);border-color:var(--border-strong);box-shadow:var(--shadow-sm)}
.grid button:active{transform:scale(.96)}
.grid button.active{
  border-color:var(--primary);background:var(--primary);color:#fff;
  box-shadow:0 8px 18px rgba(29,78,216,.3);transform:translateY(-1px);
}
.grid button.correct{
  background:var(--success-soft);border-color:#86efac;color:#065f46;
}
@media (prefers-color-scheme: dark){
  .grid button.correct{border-color:rgba(16,185,129,.35);color:#6ee7b7}
}
.grid button.wrong{
  background:var(--error-soft);border-color:#fca5a5;color:#7f1d1d;
}
@media (prefers-color-scheme: dark){
  .grid button.wrong{border-color:rgba(239,68,68,.35);color:#fca5a5}
}
.grid button.unanswered{opacity:.72}
.grid button.unanswered:hover{opacity:1}

/* Stats */
.stats{
  font-size:12.5px;color:var(--muted);margin-top:10px;
  display:flex;flex-direction:column;gap:5px;
  background:var(--surface-2);border:1px solid var(--border);
  border-radius:12px;padding:10px 12px;
}
.stats b{color:var(--text);font-weight:700}
.progress-track{height:6px;background:var(--border);border-radius:999px;overflow:hidden;margin-top:4px}
.progress-fill{height:100%;background:linear-gradient(90deg, var(--primary), #7c3aed);border-radius:999px;transition:width .4s ease}

.result-box{
  background:linear-gradient(135deg, #eff6ff 0%, #eef2ff 100%) !important;
  border-color:#bfdbfe !important;
}
@media (prefers-color-scheme: dark){
  .result-box{background:linear-gradient(135deg, rgba(59,130,246,.12), rgba(99,102,241,.10)) !important;border-color:rgba(59,130,246,.25) !important}
}
.result-box h2::after{display:none}
#result-text{font-size:13px;font-weight:600;color:var(--text-soft)}
#btn-show-result{
  margin-top:10px;width:100%;
  padding:8px 12px;border-radius:var(--radius-pill);
  border:1px solid var(--primary);background:var(--surface);
  color:var(--primary);font-weight:700;font-size:13px;cursor:pointer;
  transition:all .15s ease;
}
#btn-show-result:hover{background:var(--primary);color:#fff;transform:translateY(-1px)}

/* Info footer inside sidebar */
.info p{margin:0;font-size:11.5px;color:var(--muted-2);line-height:1.5}
.info code{font-size:11px;background:var(--surface-2);border:1px solid var(--border);padding:1px 6px;border-radius:6px;color:var(--muted)}

/* ---------- Main ---------- */
.main{display:flex;flex-direction:column;gap:16px;min-width:0}
.card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:20px;
  box-shadow:var(--shadow-lg);
  animation:cardIn .35s cubic-bezier(.2,.8,.2,1);
}
@keyframes cardIn{from{opacity:0;transform:translateY(8px) scale(.98)} to{opacity:1;transform:translateY(0) scale(1)}}

.card-header{display:flex;gap:10px;align-items:center;margin-bottom:14px;flex-wrap:wrap}
.badge{
  padding:5px 10px;border-radius:var(--radius-pill);
  font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#fff;
  box-shadow:0 2px 8px rgba(0,0,0,.12);
}
.badge.xyz{background:linear-gradient(135deg,#1d4ed8,#3730a3)} .badge.kva{background:linear-gradient(135deg,#0e7490,#0369a1)} .badge.nog{background:linear-gradient(135deg,#7c3aed,#4f46e5)} .badge.dtk{background:linear-gradient(135deg,#b45309,#92400e)}
.qnum{font-weight:800;letter-spacing:-.02em;font-size:15px}
.qtype{font-size:12.5px;font-weight:600;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);padding:4px 10px;border-radius:var(--radius-pill);margin-left:auto}
.spacer{flex:0}

#question-area{font-size:15.5px;color:var(--text-soft)}
#question-area h3{margin:0 0 6px;font-size:16px;color:var(--text)}
#question-area p{margin:0 0 8px}
.kva-box{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0}
@media(max-width:560px){.kva-box{grid-template-columns:1fr}}
.kva-box>div{
  background:var(--surface-2);border:1px solid var(--border);
  border-radius:14px;padding:12px 14px;
  box-shadow:var(--shadow-sm);
}
.kva-box .label{font-size:11px;text-transform:uppercase;color:var(--muted);font-weight:700;letter-spacing:.06em}
.kva-box .value{font-weight:700;margin-top:6px;color:var(--text);font-size:15px}
.nog-statements{background:var(--surface-2);border:1px dashed var(--border-strong);border-radius:14px;padding:12px 14px;margin:12px 0}
.nog-statements div{margin:5px 0;font-size:14.5px}
.nog-statements b{color:var(--primary);font-weight:800}

#image-area img{max-width:100%;height:auto;border:1px solid var(--border);border-radius:14px;margin:10px 0;display:block;box-shadow:var(--shadow-sm)}
#image-area .caption{font-size:12px;color:var(--muted);margin:4px 2px 0}
.underlag{
  background:linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border:1px solid #fde68a;border-radius:14px;padding:12px 14px;margin-bottom:2px;
  box-shadow:var(--shadow-sm);
}
@media (prefers-color-scheme: dark){
  .underlag{background:linear-gradient(135deg, rgba(251,191,36,.12), rgba(245,158,11,.08));border-color:rgba(251,191,36,.22)}
}
.underlag h3{margin:0 0 4px;font-size:13.5px;font-weight:800;color:#92400e}
@media (prefers-color-scheme: dark){.underlag h3{color:#fcd34d}}
.underlag p{margin:0;font-size:12.5px;color:#a16207;font-weight:500}
@media (prefers-color-scheme: dark){.underlag p{color:#fbbf24}}

.alternatives{display:flex;flex-direction:column;gap:9px;margin:14px 0}
.alt{
  position:relative;display:flex;gap:12px;align-items:center;
  padding:12px 14px;border:1.5px solid var(--border);border-radius:14px;cursor:pointer;background:var(--surface);
  transition:all .15s cubic-bezier(.2,.8,.2,1);
}
.alt:hover{border-color:var(--border-strong);background:var(--surface-hover);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.alt:active{transform:scale(.99)}
.alt.selected{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 0 0 4px var(--primary-ring)}
.alt.correct{border-color:#86efac;background:var(--success-soft);box-shadow:0 0 0 4px var(--success-ring)}
.alt.wrong{border-color:#fca5a5;background:var(--error-soft)}
.alt input{appearance:none;width:20px;height:20px;min-width:20px;border-radius:50%;border:2px solid var(--border-strong);display:grid;place-items:center;background:var(--surface);transition:all .15s ease}
.alt input:checked{border-color:var(--primary);background:var(--primary)}
.alt input:checked::after{content:"";width:7px;height:7px;border-radius:50%;background:#fff;display:block}
.alt.correct input{border-color:var(--success);background:var(--success)}
.alt.wrong input{border-color:var(--error);background:var(--error)}
.alt .key{font-weight:800;min-width:28px;text-align:center;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:3px 6px;font-size:12.5px;color:var(--muted)}
.alt.selected .key{background:var(--primary);color:#fff;border-color:var(--primary)}
.alt.correct .key{background:var(--success);color:#fff;border-color:var(--success)}
.alt.wrong .key{background:var(--error);color:#fff;border-color:var(--error)}
.alt .text{flex:1;font-size:14.5px;font-weight:500;color:var(--text-soft);line-height:1.45}

.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.actions button{
  appearance:none;
  padding:9px 16px;border:1px solid var(--border);background:var(--surface);
  border-radius:var(--radius-pill);cursor:pointer;
  font-size:13.5px;font-weight:650;color:var(--text-soft);
  transition:all .15s ease;box-shadow:var(--shadow-sm);
}
.actions button:hover{transform:translateY(-1px);box-shadow:var(--shadow);border-color:var(--border-strong)}
.actions button:active{transform:translateY(0) scale(.97)}
.actions button:focus-visible{outline:none;box-shadow:var(--ring)}
.actions button.primary{
  background:linear-gradient(135deg, var(--primary), #4f46e5);color:#fff;border-color:transparent;
  box-shadow:0 8px 20px rgba(29,78,216,.28);
}
.actions button.primary:hover{filter:brightness(1.05);transform:translateY(-1px)}
.actions button.secondary{border-color:var(--border-strong)}
.actions button:disabled{opacity:.45;cursor:not-allowed;transform:none !important;box-shadow:none}

.feedback{margin-top:14px;padding:12px 14px;border-radius:12px;font-weight:650;font-size:14px;display:flex;gap:10px;align-items:center;animation:pop .25s ease}
@keyframes pop{from{opacity:0;transform:translateY(4px) scale(.98)} to{opacity:1;transform:translateY(0) scale(1)}}
.feedback.ok{background:var(--success-soft);color:#065f46;border:1px solid #86efac}
@media (prefers-color-scheme: dark){.feedback.ok{color:#6ee7b7;border-color:rgba(16,185,129,.28)}}
.feedback.err{background:var(--error-soft);color:#7f1d1d;border:1px solid #fca5a5}
@media (prefers-color-scheme: dark){.feedback.err{color:#fca5a5;border-color:rgba(239,68,68,.28)}}
.granskning{margin-top:10px;padding:10px 12px;background:var(--warn-soft);border:1px solid #fde68a;border-radius:12px;font-size:12.5px;color:#92400e;font-weight:500}
@media (prefers-color-scheme: dark){.granskning{border-color:rgba(251,191,36,.22);color:#fcd34d}}

.rightpanel h2{margin:0 0 6px;font-size:14px;font-weight:800;letter-spacing:-.02em}
.rightpanel p{font-size:12.5px;color:var(--muted);margin:0}
.table-wrap{max-height:62vh;overflow:auto;border:1px solid var(--border);border-radius:12px;margin-top:10px;background:var(--surface);box-shadow:var(--shadow-sm)}
.table-wrap::-webkit-scrollbar{width:8px;height:8px}
.table-wrap::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:999px}
table{width:100%;border-collapse:collapse;font-size:13px}
th{position:sticky;top:0;background:var(--surface-2);text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);cursor:pointer;font-weight:700;color:var(--text-soft);white-space:nowrap}
th:hover{color:var(--primary)}
td{padding:7px 10px;border-bottom:1px solid var(--border);color:var(--text-soft)}
tr:hover td{background:var(--surface-hover)}

.help{
  font-size:12px;color:var(--muted);background:var(--surface);
  border:1px solid var(--border);border-radius:14px;padding:12px 14px;
  box-shadow:var(--shadow-sm);line-height:1.6;
}
.help strong{color:var(--text);font-weight:700}
.footer{text-align:center;font-size:12px;color:var(--muted);padding:18px 20px}
.footer code{background:var(--surface-2);border:1px solid var(--border);padding:1px 6px;border-radius:6px;font-size:11.5px}

.hl{outline:2px solid var(--primary);outline-offset:2px}

/* Scrollbar for whole page */
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:999px;border:2px solid var(--bg)}
@media (prefers-color-scheme: dark){*::-webkit-scrollbar-thumb{background:#243656;border-color:var(--bg)}}