:root{--bg: #0f172a;--bg-elev: #1e293b;--bg-soft: #f8fafc;--border: #e2e8f0;--border-dark: #334155;--text: #0f172a;--text-muted: #64748b;--text-invert: #f1f5f9;--brand: #2563eb;--brand-hover: #1d4ed8;--danger: #dc2626;--radius: 8px;--shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg-soft);color:var(--text);font-size:14px;line-height:1.5}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:#fff;padding:.5rem .9rem;border-radius:var(--radius);color:var(--text);transition:background .15s,border-color .15s}button:hover{background:#f1f5f9}button.primary{background:var(--brand);border-color:var(--brand);color:#fff}button.primary:hover{background:var(--brand-hover);border-color:var(--brand-hover)}button:disabled{opacity:.6;cursor:not-allowed}input,textarea,select{font:inherit;width:100%;padding:.5rem .7rem;border:1px solid var(--border);border-radius:var(--radius);background:#fff;color:var(--text)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #2563eb26}.login-shell{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#0f172a,#1e3a8a);padding:1rem}.login-card{width:100%;max-width:380px;background:#fff;border-radius:12px;padding:2rem;box-shadow:0 20px 40px #0f172a40}.login-card h1{margin:0 0 .25rem;font-size:1.5rem;letter-spacing:-.01em}.login-card p.sub{margin:0 0 1.5rem;color:var(--text-muted)}.login-card label{display:block;margin-bottom:.75rem}.login-card label span{display:block;margin-bottom:.3rem;font-weight:500}.login-card .error{color:var(--danger);background:#fef2f2;border:1px solid #fecaca;padding:.5rem .7rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.9rem}.login-card button.primary{width:100%;margin-top:.5rem}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:var(--bg);color:var(--text-invert);display:flex;flex-direction:column}.sidebar .brand{padding:1.25rem 1.25rem 1rem;font-size:1.25rem;font-weight:700;letter-spacing:.05em;border-bottom:1px solid var(--border-dark)}.sidebar nav{flex:1;padding:.75rem .5rem;display:flex;flex-direction:column;gap:2px}.sidebar nav a{display:flex;align-items:center;gap:.6rem;padding:.55rem .8rem;border-radius:6px;color:#cbd5e1;font-weight:500}.sidebar nav a:hover{background:#ffffff0f;color:#fff;text-decoration:none}.sidebar nav a.active{background:var(--brand);color:#fff}.sidebar .foot{padding:.75rem 1rem;border-top:1px solid var(--border-dark);font-size:.8rem;color:#94a3b8}.main{display:flex;flex-direction:column;min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.5rem;background:#fff;border-bottom:1px solid var(--border)}.topbar .who{font-weight:500}.topbar .who small{color:var(--text-muted);font-weight:400;margin-left:.4rem}.content{padding:1.5rem;flex:1}.page-title{margin:0 0 1rem;font-size:1.5rem;letter-spacing:-.01em}.page-sub{margin:-.5rem 0 1.5rem;color:var(--text-muted)}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}.card+.card{margin-top:1rem}.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.empty{text-align:center;padding:3rem 1rem;color:var(--text-muted)}.empty h3{color:var(--text);margin:0 0 .3rem}