:root {
  --sci-blue: #2563eb;
  --sci-blue-hover: #1d4ed8;
  --sci-navy: #0f172a;
  --sci-bg: #fafbfc;
  --sci-text: #1e293b;
  --sci-muted: #64748b;
  --sci-border: #e2e8f0;
}

html, body { height: 100%; margin: 0; }

body {
  background: var(--sci-bg);
  color: var(--sci-text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.navbar, .navbar.navbar-default {
  background: linear-gradient(135deg, #1e3a5f 0%, #1e40af 100%) !important;
  border: none !important;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  padding: 0 16px !important;
  min-height: 44px !important;
  height: 44px;
  margin-bottom: 0 !important;
}
.navbar .container-fluid {
  max-width: 100%;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar a, .navbar .navbar-brand, .navbar .nav-link {
  color: rgba(255,255,255,0.9) !important;
  text-decoration: none;
}
.navbar a:hover, .navbar .nav-link:hover {
  color: #fff !important;
}

.navbar .navbar-brand { padding: 0; margin: 0; display: flex; align-items: center; }
.navbar .navbar-brand a { display: flex; align-items: center; gap: 0; }
.navbar .jpy-logo { display: none !important; }
.navbar .scigantic-brand-text {
  display: inline !important;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.2px;
  color: rgba(255,255,255,0.95) !important;
  opacity: 0.95;
}

.sci-site-links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 16px;
}
.sci-site-links::before {
  content: '/';
  color: rgba(255,255,255,0.25);
  font-size: 13px;
  margin-right: 8px;
}
.sci-site-links a {
  background: transparent !important;
  border: 1px solid rgba(255,255,255,0.12) !important;
  border-radius: 5px !important;
  color: rgba(255,255,255,0.75) !important;
  padding: 3px 8px !important;
  cursor: pointer;
  font-size: 12px !important;
  font-weight: 500;
  text-decoration: none !important;
  transition: all 0.15s;
  white-space: nowrap;
}
.sci-site-links a:hover {
  border-color: rgba(255,255,255,0.3) !important;
  color: #fff !important;
}

.navbar .navbar-nav { gap: 0; }
.navbar .nav-link {
  background: transparent !important;
  border: 1px solid rgba(255,255,255,0.12) !important;
  border-radius: 5px !important;
  color: rgba(255,255,255,0.75) !important;
  padding: 3px 8px !important;
  font-size: 12px !important;
  font-weight: 500;
  transition: all 0.15s;
  margin-right: 2px;
}
.navbar .nav-link:hover {
  border-color: rgba(255,255,255,0.3) !important;
  color: #fff !important;
}

#dark-theme-toggle { display: none !important; }

#login_widget {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 12px;
}
#login_widget > span.me-1 {
  color: rgba(255,255,255,0.6);
  font-weight: 400;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.btn-outline-contrast, #logout, #login {
  font-size: 12px !important;
  padding: 3px 8px !important;
  border: 1px solid rgba(255,255,255,0.12) !important;
  border-radius: 5px !important;
  color: rgba(255,255,255,0.75) !important;
  background: transparent !important;
  font-weight: 500;
  transition: all 0.15s;
}
.btn-outline-contrast:hover, #logout:hover, #login:hover {
  border-color: rgba(255,255,255,0.3) !important;
  color: #fff !important;
}

.navbar-toggler { border: 1px solid rgba(255,255,255,0.2); padding: 0.2rem 0.4rem; }
.navbar-toggler-icon { filter: invert(1); width: 1rem; height: 1rem; }

@media (max-width: 640px) {
  .sci-site-links { display: none; }
}

a { color: var(--sci-blue); }
a:hover { color: var(--sci-blue-hover); }

#login-main.container { max-width: 420px; margin-top: 6vh; }

.auth-form-header h1 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}
.auth-form-body {
  background: #fff;
  border: 1px solid var(--sci-border);
  border-radius: 10px;
  padding: 1.25rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
label { color: var(--sci-muted); font-weight: 500; margin-top: 0.5rem; font-size: 13px; }
.form-control {
  border-radius: 8px;
  border: 1px solid var(--sci-border);
  padding: 0.55rem 0.75rem;
  font-size: 14px;
}
.form-control:focus {
  border-color: var(--sci-blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}
.btn.btn-jupyter, #login_submit {
  border-radius: 8px;
  padding: 0.55rem 0.85rem;
  font-weight: 600;
  font-size: 14px;
}
.btn-primary, .btn.btn-primary {
  background: var(--sci-blue) !important;
  border-color: var(--sci-blue) !important;
  color: #fff !important;
}
.btn-primary:hover, .btn.btn-primary:hover {
  background: var(--sci-blue-hover) !important;
  border-color: var(--sci-blue-hover) !important;
}
.btn.btn-jupyter {
  background: var(--sci-blue) !important;
  border-color: var(--sci-blue) !important;
  color: #fff !important;
}
.btn.btn-jupyter:hover {
  background: var(--sci-blue-hover) !important;
  border-color: var(--sci-blue-hover) !important;
}