/* Core styling */
:root{ --primary:#2ea3f2; --ink:#0d1b2a; --bg:#ffffff; --muted:#6b7280; --border:#e5e7eb; }
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);}
.container{max-width:1100px;margin:0 auto;padding:1rem;}
.site-header{background:var(--ink);color:#fff;position:sticky;top:0;z-index:10}
.nav-wrap{display:flex;align-items:center;gap:1rem}
.brand{color:#fff;text-decoration:none;font-weight:800;font-size:1.25rem;margin-right:0.5rem}
.main-nav{display:flex;gap:0.75rem;flex:1;flex-wrap:wrap}
.main-nav a{color:#fff;text-decoration:none;opacity:.9;padding:.35rem .5rem;border-radius:.5rem}
.main-nav a:hover{opacity:1;background:rgba(255,255,255,.06)}
.user-area{display:flex;gap:.5rem;align-items:center}
.person-icon{color:#fff;display:inline-flex;align-items:center;justify-content:center;padding:.25rem;border-radius:.6rem;background:rgba(255,255,255,.1)}
.btn{background:var(--primary);color:#fff;border:1px solid transparent;padding:.6rem 1rem;border-radius:.65rem;text-decoration:none;display:inline-block}
.btn:hover{filter:brightness(1.05)}
.btn.outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn.small{padding:.4rem .7rem;font-size:.9rem}
.btn.disabled{opacity:.6;pointer-events:none}
.hero{padding:3rem 0;text-align:center}
.cta-row{display:flex;gap:1rem;justify-content:center;margin:1rem 0}
.features{display:grid;gap:.5rem}
.features.vertical{grid-template-columns:1fr} /* vertical bullet list */
.form{display:grid;gap:.75rem;max-width:800px}
.form.inline{grid-template-columns:1fr auto;align-items:center}
.form label{display:grid;gap:.35rem}
.form input,.form select,.form textarea{padding:.6rem;border:1px solid var(--border);border-radius:.5rem}
.grid{display:grid;gap:.75rem;grid-template-columns:1fr 1fr}
.grid-2{display:grid;gap:1rem;grid-template-columns:1fr 1fr}
.card-grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{border:1px solid var(--border);border-radius:.9rem;padding:1rem;background:#fff;margin:.75rem 0}
.card.disabled{opacity:.55;filter:grayscale(1);pointer-events:none}
.table{border:1px solid var(--border);border-radius:.75rem;overflow:hidden;margin:.5rem 0}
.table .row{display:grid;gap:.5rem;padding:.6rem 1rem;border-bottom:1px solid var(--border)}
.table .row.head{background:#f8fafc;font-weight:700}
.alert{padding:.6rem .8rem;border-radius:.6rem;margin:.5rem 0}
.alert.error{background:#fee2e2;color:#991b1b}
.alert.ok{background:#dcfce7;color:#166534}
.alert.info{background:#e0f2fe;color:#075985}
.message,.comment{border:1px solid var(--border);border-radius:.75rem;padding:.6rem .8rem;margin:.5rem 0}
.meta{font-size:.85rem;color:var(--muted)}
.muted{color:var(--muted)}
.blurred{filter:blur(2px);pointer-events:none;user-select:none}
.blurred-item{height:56px;background:linear-gradient(90deg,#f3f4f6,#e5e7eb);border-radius:.5rem;margin:.5rem 0}
.result{border:1px solid var(--border);padding:.75rem;border-radius:.75rem;margin:.5rem 0}
.avatar{width:120px;height:120px;border-radius:999px;object-fit:cover;border:3px solid var(--border);}
.site-footer{margin-top:3rem;border-top:1px solid var(--border);background:#f8fafc;padding:1.2rem 0;font-size:.95rem;color:#334155}
@media (max-width:900px){ .grid,.grid-2,.form.inline{grid-template-columns:1fr} .nav-wrap{flex-wrap:wrap} }


/* === v3 Admin + User card banner + shadows === */
.card { box-shadow: 0 8px 24px rgba(2, 6, 23, 0.08); padding-top: 0; overflow: hidden; }
.card .card-banner { background: var(--primary); color: #fff; padding: .6rem .8rem; margin: 0 -1rem 1rem; }
.card .card-banner h2, .card .card-banner h3 { color: #fff; margin: 0; }
.card .card-body { padding-top: 0; }

/* Table header grid consistency and striped rows */
.table .row.head { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; }
.table .row.striped:nth-child(even) { background: #f0f7ff; } /* light blue */
.table .row { align-items: center; }


/* v4: nested sub-cards inside cards */
.subcard{border:1px solid var(--border); border-radius:.6rem; background:#f8fafc; padding:.75rem; margin:.6rem 0; box-shadow:0 1px 2px rgba(2,6,23,.04);}
.subcard .subcard-title{font-weight:700; margin-bottom:.4rem; color:#0b1220;}


/* v8: return-to-home link */
.return-home{margin:.5rem 0 0.75rem}
.return-home a{color:var(--muted);text-decoration:none;font-size:.95rem}
.return-home a:hover{text-decoration:underline}