:root{
  --sidebar-bg:#111827;
  --sidebar-text:#ffffff;
  --body-bg:#0b1220;
}

body{ background: var(--body-bg); }

.sidebar{
  background: var(--sidebar-bg);
  min-height: 100vh;
}

.brand-logo{
  width: 100%;
  max-width: 260px;
  height: auto;
  display: block;
}

.sidebar-nav .nav-link{
  color: var(--sidebar-text) !important;
  text-decoration: none;
  padding: .45rem .25rem;
  border-radius: 0;
}

.sidebar-nav .nav-link:hover{
  opacity: .9;
  text-decoration: underline;
}

.sidebar-nav .nav-link.active{
  font-weight: 700;
  text-decoration: underline;
}

.sidebar-nav .nav-section{
  color: rgba(255,255,255,.55);
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-top: 1rem;
  margin-bottom: .35rem;
}

/* cards */
.card{
  border: 1px solid rgba(148,163,184,.18);
  border-radius: 16px;
}
.card .card-title{ color: #0f172a; }
.card .text-muted{ color: #475569 !important; }

/* consistent links */
a.link-primary{ text-decoration: none; }
a.link-primary:hover{ text-decoration: underline; }

/* ===== Global footer ===== */
.site-footer{
  border-top: 1px solid rgba(148,163,184,.18);
  margin-left: -1rem;
  margin-right: -1rem;
  padding-left: 1rem;
  padding-right: 1rem;
  background: rgba(0,0,0,.15);
}

.footer-link{
  color: rgba(255,255,255,.8);
  text-decoration: none;
}
.footer-link:hover{
  color: rgba(255,255,255,.95);
  text-decoration: underline;
}
.footer-text{
  color: rgba(255,255,255,.65);
}
.footer-label{
  color: rgba(255,255,255,.65);
  margin-right: .25rem;
}
.footer-sep{
  color: rgba(255,255,255,.35);
  margin: 0 .35rem;
}