/* --- Modern clean theme (no external fonts) --- */
:root{
  --bg: #0b0f19;
  --surface: rgba(255,255,255,.06);
  --surface2: rgba(255,255,255,.10);
  --card: rgba(255,255,255,.08);
  --card2: rgba(255,255,255,.10);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --faint: rgba(255,255,255,.55);
  --border: rgba(255,255,255,.14);
  --shadow: 0 14px 40px rgba(0,0,0,.35);
  --shadow2: 0 10px 24px rgba(0,0,0,.28);

  --accent: #7dd3fc;      /* sky */
  --accent2: #a78bfa;     /* purple */
  --good: #34d399;
  --warn: #fbbf24;

  --radius: 18px;
  --radius2: 26px;

  --max: 1060px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, serif;
  background:
    radial-gradient(1200px 700px at 10% 10%, rgba(125,211,252,.18), transparent 60%),
    radial-gradient(1000px 600px at 90% 20%, rgba(167,139,250,.16), transparent 60%),
    radial-gradient(900px 560px at 50% 110%, rgba(52,211,153,.10), transparent 55%),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
  letter-spacing: .1px;
}

a{color: var(--accent); text-decoration:none}
a:hover{opacity:.9; text-decoration:underline}
p{margin: 12px 0}
ul{margin: 10px 0 10px 20px}
li{margin: 8px 0}
hr{
  border:none;
  border-top: 1px solid var(--border);
  margin: 18px 0;
}

.wrap{
  max-width: var(--max);
  margin:0 auto;
  padding: 22px 18px;
}

/* --- Layout --- */
.shell{
  display:grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 980px){
  .shell{
    grid-template-columns: 300px 1fr;
    align-items:start;
  }
}

.topbar{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(11,15,25,.86), rgba(11,15,25,.55));
  border-bottom: 1px solid var(--border);
}
.topbar-inner{
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
}
.brand{
  display:flex;
  flex-direction:column;
  gap: 2px;
  min-width: 0;
}
.brand-title{
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .2px;
  white-space: nowrap;
  overflow:hidden;
  text-overflow: ellipsis;
}
.brand-sub{
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow:hidden;
  text-overflow: ellipsis;
}

.badges{
  display:flex;
  gap: 8px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  font-size: 12px;
  color: var(--muted);
}
.dot{
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(125,211,252,.14);
}

/* --- Sidebar nav --- */
.sidebar{
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.04));
  box-shadow: var(--shadow2);
  overflow:hidden;
}
.side-head{
  padding: 16px 16px 12px 16px;
  border-bottom: 1px solid var(--border);
}
.side-head h2{
  margin: 0;
  font-size: 14px;
  letter-spacing: .2px;
}
.side-head p{
  margin: 6px 0 0 0;
  font-size: 12px;
  color: var(--muted);
}
.nav{
  padding: 10px;
  display:grid;
  gap: 8px;
}
.nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid transparent;
  background: rgba(255,255,255,.04);
  color: var(--text);
  text-decoration:none;
  font-size: 14px;
}
.nav a:hover{
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.10);
}
.nav a.active{
  background: linear-gradient(90deg, rgba(125,211,252,.14), rgba(167,139,250,.12));
  border-color: rgba(125,211,252,.28);
}
.nav small{
  color: var(--muted);
  font-size: 12px;
}

/* --- Content --- */
.content{
  display:flex;
  flex-direction:column;
  gap: 16px;
}
.hero{
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  background:
    radial-gradient(800px 300px at 20% 20%, rgba(125,211,252,.22), transparent 60%),
    radial-gradient(700px 280px at 80% 10%, rgba(167,139,250,.18), transparent 60%),
    rgba(255,255,255,.04);
  box-shadow: var(--shadow);
  padding: 18px;
  overflow:hidden;
}
.hero h1{
  margin: 0;
  font-size: 22px;
  letter-spacing: .2px;
}
.hero p{
  margin: 10px 0 0 0;
  color: var(--muted);
  max-width: 70ch;
}

.section{
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  background: rgba(255,255,255,.04);
  box-shadow: var(--shadow2);
  padding: 18px;
}
.section h2{
  margin: 0 0 10px 0;
  font-size: 18px;
  letter-spacing: .2px;
}
.section h3{
  margin: 18px 0 10px 0;
  font-size: 15px;
  letter-spacing: .2px;
  color: rgba(255,255,255,.90);
}

.grid{
  display:grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
@media (min-width: 900px){
  .grid{grid-template-columns: 1fr 1fr;}
}

.card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius: var(--radius);
  padding: 14px;
}
.callout{
  border-left: 4px solid var(--accent);
  background: rgba(125,211,252,.08);
}
.callout.warn{border-left-color: var(--warn); background: rgba(251,191,36,.08);}
.callout.good{border-left-color: var(--good); background: rgba(52,211,153,.08);}

.figure{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255,255,255,.04);
}
.figure img{
  width:100%;
  height:auto;
  border-radius: 14px;
  background: rgba(255,255,255,.02);
}
.caption{
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
}

.small{font-size: 12px; color: var(--muted)}
.kicker{font-size:12px; color: var(--muted); letter-spacing:.3px; text-transform:uppercase}
.pills{display:flex; flex-wrap:wrap; gap:8px; margin-top:12px}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  font-size: 12px;
  color: var(--muted);
}
.pill b{color: var(--text); font-weight:600}

/* Tables */
table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  overflow:hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  margin: 12px 0;
  font-size: 14px;
}
th, td{
  padding: 12px;
  border-bottom: 1px solid var(--border);
  vertical-align:top;
}
th{
  text-align:left;
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.88);
  font-weight: 650;
}
tr:last-child td{border-bottom:none}

/* Footer */
footer{
  margin-top: 18px;
  padding: 20px 0 36px 0;
  color: var(--muted);
  font-size: 12px;
  text-align:center;
}