:root{
  --bg:#f8fafc;
  --ink:#0f172a;
  --muted:#475569;
  --card:#ffffff;
  --border:#e2e8f0;
  --soft:#eef2ff;
  --primary:#4f46e5;
  --accent:#10b981;
  --warn:#f59e0b;
  --bad:#ef4444;
}

[data-theme="dark"]{
  --bg:#0b1220;
  --ink:#e5e7eb;
  --muted:#94a3b8;
  --card:#0f172a;
  --border:#22314a;
  --soft:#111c35;
  --primary:#60a5fa;
  --accent:#34d399;
  --warn:#fbbf24;
  --bad:#fb7185;
}

*{ box-sizing:border-box; }

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
}

.wrap{
  max-width:1100px;
  margin:0 auto;
  padding:28px 16px 40px;
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:18px;
  box-shadow:0 12px 30px rgba(2,6,23,.08);
}

.row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
  justify-content:space-between;
}

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:14px;
  margin-top:14px;
}

.col12{ grid-column:span 12; }
.col7{ grid-column:span 7; }
.col6{ grid-column:span 6; }
.col5{ grid-column:span 5; }

@media (max-width:900px){
  .col7,.col6,.col5{ grid-column:span 12; }
}

.tile{
  padding:16px;
  border-radius:16px;
  border:1px solid var(--border);
  background:rgba(148,163,184,.06);
}

.badge{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  font-weight:900;
  font-size:.75rem;
  padding:.25rem .7rem;
  border:1px solid var(--border);
  border-radius:999px;
  background:var(--soft);
  color:var(--primary);
}

.btn{
  display:inline-block;
  text-decoration:none;
  border-radius:12px;
  padding:.62rem .95rem;
  font-weight:900;
  border:1px solid var(--border);
  background:rgba(148,163,184,.10);
  color:var(--ink);
  cursor:pointer;
}

.btn:hover{ filter:brightness(1.06); }

.btn-primary{
  border:none;
  background:linear-gradient(135deg,var(--primary),#7c3aed);
  color:#fff;
}

.pill{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  border-radius:999px;
  padding:.28rem .65rem;
  font-weight:900;
  border:1px solid var(--border);
  background:rgba(148,163,184,.10);
}

.pill.good{ background:rgba(16,185,129,.12); color:var(--accent); }
.pill.warn{ background:rgba(245,158,11,.12); color:var(--warn); }
.pill.bad { background:rgba(239,68,68,.10); color:var(--bad); }

.muted{ color:var(--muted); }
.title{ font-weight:950; font-size:1.15rem; }
.small{ font-size:.94rem; line-height:1.4rem; }


/* ===== Site Footer (IP / License) ===== */
.siteFooter{
  margin-top:18px;
  padding:18px 14px;
  border-top:1px solid var(--border);
  color:var(--muted);
}

.siteFooter__inner{
  max-width:1100px; /* same as .wrap */
  margin:0 auto;
  text-align:center;
  line-height:1.6;
  font-size:.90rem;
}

.siteFooter__inner strong{
  color:var(--ink);
}

.siteFooter__note{
  font-size:.82rem;
  opacity:.92;
}

/* ===== Global Home (Index) Button ===== */
#homeBtn{
  position: fixed;
  bottom: 18px;
  left: 18px;
  z-index: 9999;

  display: inline-flex;
  align-items: center;
  gap: .35rem;

  padding: .55rem .85rem;
  border-radius: 999px;

  font-weight: 900;
  font-size: .85rem;
  text-decoration: none;

  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--border);

  box-shadow: 0 12px 30px rgba(2,6,23,.12);
  transition: transform .15s ease, filter .15s ease;
}

#homeBtn:hover{
  transform: translateY(-1px);
  filter: brightness(1.05);
}

#homeBtn:active{
  transform: translateY(0);
}

/* Mobile friendly */
@media (max-width: 520px){
  #homeBtn{
    bottom: 12px;
    left: 12px;
    padding: .5rem .75rem;
    font-size: .82rem;
  }
}

/* ===== Sticky Step Controls (Prev / Next / Auto) ===== */
.stepBar{
  position: sticky;
  bottom: 14px;
  z-index: 9998; /* below #homeBtn (9999), above content */

  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;

  padding: 10px 12px;
  margin: 14px auto 0;
  width: fit-content;
  max-width: calc(100% - 24px);

  background: rgba(255,255,255,.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  border: 1px solid rgba(2,6,23,.12);
  border-radius: 14px;
  box-shadow: 0 12px 34px rgba(2,6,23,.12);
}

[data-theme="dark"] .stepBar{
  background: rgba(15,23,42,.72);
  border-color: rgba(255,255,255,.12);
  box-shadow: 0 12px 34px rgba(0,0,0,.35);
}

.stepBar .btn{ white-space: nowrap; }

/* Prevent last content from hiding behind sticky controls */
.wrap{ padding-bottom: 110px; }