/* ---- Base ---- */
html, body { height: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  padding-top: 5rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  color: #1d1d1f`;

  background:
  radial-gradient(at 15% 20%, rgba(140, 190, 255, 0.85), transparent 60%),
  radial-gradient(at 85% 25%, rgba(110, 175, 255, 0.75), transparent 55%),
  radial-gradient(at 50% 80%, rgba(170, 215, 255, 0.85), transparent 60%),
  linear-gradient(180deg, #eef5ff 0%, #e3efff 100%);

  background-attachment: fixed;
}


a { color: #a8c7ff; }
a:hover { color: #d1e3ff; }

.muted { color: rgba(233, 238, 246, 0.72); }

/* Navbar */
.navbar-inverse {
  background: rgba(8, 12, 24, 0.65);
  border-color: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
}
.navbar-inverse .navbar-brand { color: #ffffff; font-weight: 600; }
.navbar-inverse .navbar-nav>li>a { color: rgba(255,255,255,0.82); }
.navbar-inverse .navbar-nav>li>a:hover { color: #ffffff; }
.navbar-inverse .navbar-nav>.active>a,
.navbar-inverse .navbar-nav>.active>a:hover,
.navbar-inverse .navbar-nav>.active>a:focus {
  background: rgba(255,255,255,0.10);
}

/*Hero */
.hero {
  position: relative;
  padding: 42px 0 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.hero-glow {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(165, 210, 255, 0.55), transparent);
}
.hero-badge {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.10);
}
.hero-title {
  margin: 14px 0 10px;
  font-weight: 800;
  font-size: 44px;
  line-height: 1.1;
}
.hero-subtitle { font-size: 18px; max-width: 56ch; }

.hero-chips { margin-top: 14px; }
.chip {
  display: inline-block;
  padding: 7px 10px;
  margin: 0 8px 8px 0;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  font-size: 12px;
}

.hero-cta { margin-top: 18px; }
.btn-primary {
  background: linear-gradient(90deg, rgba(96, 165, 250, 0.95), rgba(167, 139, 250, 0.95));
  border: none;
}
.btn-primary:hover { filter: brightness(1.07); }
.btn-default {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  color: #ffffff;
}
.btn-default:hover { background: rgba(255,255,255,0.10); color: #ffffff; }

/* Layout  */
.main { padding-bottom: 50px; }
.section { padding: 34px 0; }
.section-title { margin-bottom: 14px; }
.section-title h2 { margin: 0 0 4px; font-weight: 800; }

/*  Cards  */
.card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 18px;
  box-shadow: 0 18px 60px rgba(0,0,0,0.25);
  overflow: hidden;
}
.card + .card { margin-top: 16px; }
.card-header {
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.card-header h3 { margin: 2px 0 0; font-weight: 700; }
.card-body { padding: 18px; }
.card-footer {
  padding: 12px 18px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.card-hero .card-header { font-weight: 700; }

.card-media img { width: 100%; height: auto; display: block; }

.kicker {
  display: inline-block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: rgba(233,238,246,0.70);
}

/*  Lists  */
.checklist { padding-left: 20px; font-size: 16px; }
.checklist li { margin: 7px 0; }

.bullets { padding-left: 20px; }
.bullets li { margin: 6px 0; }

/*  Callouts  */
.callout {
  padding: 14px;
  border-radius: 16px;
  background: rgba(0,0,0,0.22);
  border: 1px solid rgba(255,255,255,0.10);
}
.callout-title { font-weight: 700; margin-bottom: 6px; }

/*  Media / embeds  */
.ratio {
  position: relative;
  width: 100%;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(0,0,0,0.35);
}
.ratio-16x9 { padding-top: 56.25%; }
.ratio iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

/* Table  */
.table {
  color: #e9eef6;
}
.table>thead>tr>th {
  border-bottom: 1px solid rgba(255,255,255,0.12);
  color: rgba(233,238,246,0.80);
}
.table>tbody>tr>td {
  border-top: 1px solid rgba(255,255,255,0.08);
}

/*  Code blocks  */
pre {
  background: rgba(0,0,0,0.35);
  color: #e9eef6;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 16px;
}

/*  Footer  */
.footer {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.10);
  color: rgba(233,238,246,0.70);
}

/*  Back-to-top button  */
#toTop {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.08);
  color: #ffffff;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 9999;
}
#toTop:hover { background: rgba(255,255,255,0.12); }

/*  Small screens  */
@media (max-width: 768px) {
  .hero-title { font-size: 34px; }
  .hero { padding-top: 28px; }
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.35);
  z-index: -1;
}

/* Hero tech chips */
.hero-chips {
  margin-top: 1rem;
}

.hero-chips .chip {
  display: inline-block;
  padding: 6px 14px;
  margin: 4px 8px 4px 0;

  font-size: 0.85rem;
  font-weight: 500;
  color: #0a2540;

  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(10, 37, 64, 0.18);
  border-radius: 999px;

  box-shadow: 0 4px 12px rgba(10, 37, 64, 0.08);
  backdrop-filter: blur(6px);
}


.kicker {
  color: #3a4a5a;
  font-weight: 500;
}


hr.soft {
  border: none;
  border-top: 2px solid #1f2d3d;
  opacity: 0.5;
}


#systemtest .metric-label {
  font-weight: 600;
  color: #0a2540;
  margin-bottom: 4px;
}

#systemtest .metric-value {
  color: #3a4a5a;
  line-height: 1.4;
}


#parts,
#parts table,
#parts th,
#parts td,
#parts .total {
  color: #0a2540;
}


#parts .table-parts,
#parts .table-parts th,
#parts .table-parts td {
  border-color: rgba(10, 37, 64, 0.25);
}

#parts .table-parts thead th {
  border-bottom: 2px solid rgba(10, 37, 64, 0.35);
}


#work .person-large{
  display: flex;
  align-items: flex-start;
  gap: 36px;
}


#work .person-large img{
  width: 320px;
  height: 320px;
  border-radius: 20px;
  object-fit: cover;
  flex-shrink: 0;
}


#work .person-info{
  flex: 1;
  padding-top: 6px;
}

/* Name */
#work .person-name{
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 10px;
}

/* Email */
#work .person-email{
  font-size: 1.55rem;
  margin-bottom: 22px;
  color: #0a2540;
}

/* Bullets */
#work .person-info ul.bullets li{
  font-size: 1.55rem;
  line-height: 1.8;
}

/* Code Appendix link */
.code-link {
  font-size: 1.3rem;
  font-weight: 600;
  color: #c62828;
  text-decoration: none;
}

.code-link:hover {
  color: #b71c1c;
  text-decoration: underline;
}

/* Hero tech chips */
.hero-chips .chip {
  font-size: 1.05rem;
  font-weight: 500;
  padding: 6px 12px;
}


.footer, .footer div {
  color: #0a2540 !important;
}

.footer {
  border-top: 1px solid #0a2540;
  margin-top: 32px;
  padding-top: 16px;
}