/* Core layout styles for One Nuclear Shipyard Senior Leader Workshop */
:root { --bg:#f8fafc; --text:#0f172a; --muted:#64748b; --card:#ffffff; --border:#e5e7eb; --brand:#0ea5e9; --brandHover:#0284c7; }
* { box-sizing: border-box; }
body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; margin: 0; background: var(--bg); color: var(--text); }
header { padding: 20px; background: linear-gradient(135deg, #1e293b, #0f172a); color: white; }
.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.nav { display: flex; align-items: center; justify-content: space-between; }
.brand { font-weight: 700; letter-spacing: .2px; }
.nav a { color: white; text-decoration: none; margin-left: 16px; opacity: .95; }
.nav a:hover { opacity: 1; }
main { padding: 32px 0; }
footer { text-align: center; padding: 24px; color: var(--muted); border-top: 1px solid var(--border); background: #fff; }
.btn { display: inline-block; background: var(--brand); color: #fff; padding: 10px 14px; border-radius: 8px; text-decoration: none; }
.btn:hover { background: var(--brandHover); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }

/* Navbar customization - Override Bootstrap navbar color */
.navbar.navbar-dark,
.navbar.navbar-expand-lg.navbar-dark,
.navbar.bg-dark,
.navbar.navbar-expand-lg.navbar-dark.bg-dark {
    background-color: #173a65 !important;
    border-color: #173a65 !important;
}

/* Ensure nav links remain visible */
.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.95) !important;
}

.navbar-dark .navbar-nav .nav-link:hover {
    color: rgba(255, 255, 255, 1) !important;
}

.navbar-dark .navbar-brand {
    color: rgba(255, 255, 255, 1) !important;
}