* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f0f4f8; color: #1a202c; }

/* Login */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #e8edf3; }
.login-box { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,0.1); width: 100%; max-width: 380px; text-align: center; }
.login-box h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.login-box p { color: #718096; margin-bottom: 1.5rem; }
.login-box input { display: block; width: 100%; padding: 0.75rem 1rem; margin-bottom: 1rem; border: 1px solid #e2e8f0; border-radius: 8px; font-size: 1rem; }
.login-box button { width: 100%; padding: 0.75rem; background: #4a6fa5; color: white; border: none; border-radius: 8px; font-size: 1rem; cursor: pointer; font-weight: 600; }
.login-box button:hover { background: #3a5a8a; }
.error { background: #fff5f5; color: #c53030; border: 1px solid #fed7d7; padding: 0.75rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.9rem; }

/* App shell */
.app-shell { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar { width: 220px; background: #1e2a3a; color: #e2e8f0; display: flex; flex-direction: column; flex-shrink: 0; }
.sidebar-header { padding: 1.5rem 1.25rem 1rem; display: flex; align-items: center; gap: 0.6rem; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sidebar-header .logo { font-size: 1.4rem; }
.sidebar-header .logo-text { font-size: 1rem; font-weight: 700; color: white; }
.nav-links { list-style: none; padding: 0.75rem 0; flex: 1; }
.nav-links li a { display: flex; align-items: center; gap: 0.75rem; padding: 0.7rem 1.25rem; color: #a0aec0; text-decoration: none; font-size: 0.95rem; border-radius: 6px; margin: 0 0.5rem; transition: background 0.15s, color 0.15s; }
.nav-links li a:hover { background: rgba(255,255,255,0.07); color: white; }
.nav-links li.active a { background: #4a6fa5; color: white; }
.nav-links .icon { font-size: 1.1rem; }
.sidebar-footer { padding: 1rem 1.25rem; border-top: 1px solid rgba(255,255,255,0.08); }
.logout-link { color: #718096; text-decoration: none; font-size: 0.85rem; }
.logout-link:hover { color: #e2e8f0; }

/* Main content */
.main-content { flex: 1; padding: 2rem; overflow-y: auto; }
.page-header { margin-bottom: 2rem; }
.page-header h1 { font-size: 1.75rem; font-weight: 700; color: #1a202c; }
.page-header .subtitle { color: #718096; margin-top: 0.25rem; }

/* Home quick-links */
.quick-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.quick-links .card { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.75rem; background: white; border-radius: 12px; padding: 2rem 1.5rem; width: 160px; text-decoration: none; color: #1a202c; box-shadow: 0 2px 8px rgba(0,0,0,0.07); transition: transform 0.15s, box-shadow 0.15s; }
.quick-links .card:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,0,0,0.12); }
.card-icon { font-size: 2.5rem; }
.card-label { font-size: 0.95rem; font-weight: 600; }

/* Placeholder */
.placeholder-card { background: white; border-radius: 12px; padding: 2rem; box-shadow: 0 2px 8px rgba(0,0,0,0.07); color: #718096; }
.wheel-embed { background: white; border-radius: 12px; padding: 2rem; box-shadow: 0 2px 8px rgba(0,0,0,0.07); color: #718096; }

/* User pill in sidebar */
.sidebar-user { display: block; font-size: 0.82rem; color: #a0aec0; margin-bottom: 0.4rem; }
.role-pill { font-size: 0.62rem; font-weight: 700; padding: 0.15em 0.5em; border-radius: 10px; text-transform: uppercase; letter-spacing: 0.06em; vertical-align: middle; }
.role-pill.parent { background: #2b4c7e; color: #90cdf4; }
.role-pill.child  { background: #44337a; color: #d6bcfa; }