:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:#f5f6f8;color:#1a1a1a}a{color:inherit}.layout{display:flex;min-height:100vh}.sidebar{width:200px;background:#1a2332;color:#fff;padding:24px 16px;display:flex;flex-direction:column;gap:8px}.sidebar a{color:#cbd5e1;text-decoration:none;padding:10px 12px;border-radius:6px}.sidebar a.active,.sidebar a:hover{background:#2c3a52;color:#fff}.main{flex:1;padding:24px 32px;max-width:1100px}.card{background:#fff;border-radius:8px;padding:16px;box-shadow:0 1px 3px #00000014;margin-bottom:16px}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid #eee;font-size:14px}button,input,select{font:inherit}button{cursor:pointer;background:#2563eb;color:#fff;border:none;border-radius:6px;padding:8px 14px}button.secondary{background:#e5e7eb;color:#111}button:disabled{opacity:.5;cursor:not-allowed}input,select{padding:8px 10px;border:1px solid #d1d5db;border-radius:6px}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600}.badge-new{background:#dbeafe;color:#1e40af}.badge-contacted{background:#fef3c7;color:#92400e}.badge-qualified{background:#ede9fe;color:#5b21b6}.badge-won{background:#dcfce7;color:#166534}.badge-lost,.badge-unassigned{background:#fee2e2;color:#991b1b}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-box{width:320px;display:flex;flex-direction:column;gap:10px}.error-text{color:#b91c1c;font-size:13px}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:20px}.stat-tile{background:#fff;border-radius:8px;padding:16px;box-shadow:0 1px 3px #00000014}.stat-tile .value{font-size:28px;font-weight:700}.stat-tile .label{font-size:13px;color:#6b7280}