:root{--bg:#0f172a;--card:#1e293b;--border:#334155;--text:#f1f5f9;--text-muted:#94a3b8;--accent:#22c55e;--accent-red:#ef4444;--accent-yellow:#eab308;--accent-blue:#3b82f6;--accent-purple:#a855f7}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.container{max-width:900px;margin:0 auto;padding:2rem 1rem}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}.card h2{font-size:1.1rem;font-weight:600;margin-bottom:1rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:1rem;gap:1rem}.stat{text-align:center;padding:1rem;background:hsla(0,0%,100%,.03);border-radius:8px}.stat-value{font-size:2rem;font-weight:700}.stat-label{font-size:.8rem;color:var(--text-muted);margin-top:.25rem;text-transform:uppercase;letter-spacing:.05em}.stat-green{color:var(--accent)}.stat-red{color:var(--accent-red)}.stat-yellow{color:var(--accent-yellow)}.stat-blue{color:var(--accent-blue)}.stat-purple{color:var(--accent-purple)}table{width:100%;border-collapse:collapse}td,th{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--border)}th{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}td{font-size:.9rem}.badge{display:inline-block;padding:.15rem .5rem;border-radius:4px;font-size:.75rem;font-weight:600}.badge-green{background:rgba(34,197,94,.15);color:var(--accent)}.badge-yellow{background:rgba(234,179,8,.15);color:var(--accent-yellow)}.badge-red{background:rgba(239,68,68,.15);color:var(--accent-red)}input,select,textarea{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:.6rem .8rem;color:var(--text);font-size:.95rem;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}.btn,button{background:var(--accent);color:#0f172a;border:none;border-radius:8px;padding:.6rem 1.5rem;font-weight:600;cursor:pointer;font-size:.95rem;transition:opacity .2s}.btn:hover,button:hover{opacity:.9}.btn-secondary{background:var(--border);color:var(--text)}.form-row{display:flex;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}.form-group{flex:1 1;min-width:120px}.form-group label{display:block;font-size:.8rem;color:var(--text-muted);margin-bottom:.3rem;text-transform:uppercase;letter-spacing:.05em}.login-form{max-width:360px;margin:4rem auto}.login-form h1{text-align:center;margin-bottom:2rem;font-size:1.5rem}.login-error,.login-form .form-group{margin-bottom:1rem}.login-error{color:var(--accent-red);font-size:.85rem;text-align:center}.nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;margin-bottom:2rem;border-bottom:1px solid var(--border)}.nav h1{font-size:1.2rem;font-weight:700}.nav a{color:var(--text-muted);text-decoration:none;font-size:.85rem}.nav a:hover{color:var(--text)}.chart-container{position:relative;height:250px;margin-bottom:1rem}@media (max-width:640px){.container{padding:1rem .5rem}.stat-grid{grid-template-columns:repeat(2,1fr)}.form-row{flex-direction:column}}