*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--green: #2d6a4f;--green-light: #52b788;--green-dark: #1b4332;--bg: #f8faf8;--card: #ffffff;--border: #d8e8d8;--text: #1a2e1a;--text-muted: #5a7a5a;--danger: #c0392b}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5}main{max-width:1200px;margin:0 auto;padding:1.5rem 1rem}nav{background:var(--green-dark);padding:.75rem 1.5rem;display:flex;align-items:center;gap:1.5rem}nav a{color:#c8e6c8;text-decoration:none;font-size:.9rem}nav a:hover,nav a.active{color:#fff}nav .logo{font-weight:700;color:#fff;font-size:1.1rem;margin-right:auto}nav .user-toggle{display:flex;gap:.25rem;background:#ffffff1a;border-radius:6px;padding:.25rem}nav .user-toggle button{border:none;background:transparent;color:#c8e6c8;padding:.25rem .75rem;border-radius:4px;cursor:pointer;font-size:.85rem}nav .user-toggle button.active{background:var(--green-light);color:#fff}.card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:1.25rem;margin-bottom:1rem}button,.btn{background:var(--green);color:#fff;border:none;padding:.5rem 1.25rem;border-radius:6px;cursor:pointer;font-size:.9rem;font-weight:500}button:hover,.btn:hover{background:var(--green-light)}button.secondary{background:transparent;border:1px solid var(--border);color:var(--text)}button.danger{background:var(--danger)}input,select,textarea{width:100%;padding:.5rem .75rem;border:1px solid var(--border);border-radius:6px;font-size:.9rem;background:#fff}label{display:block;margin-bottom:.25rem;font-size:.85rem;color:var(--text-muted)}.form-group{margin-bottom:1rem}table{width:100%;border-collapse:collapse;font-size:.9rem}th{text-align:left;padding:.5rem;border-bottom:2px solid var(--border);color:var(--text-muted);font-size:.8rem;text-transform:uppercase}td{padding:.5rem;border-bottom:1px solid var(--border)}tr:hover td{background:var(--bg)}.loading{text-align:center;padding:3rem;color:var(--text-muted)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}.page-header h1{font-size:1.5rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;margin-bottom:1.5rem}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:1rem;text-align:center}.stat-card .value{font-size:2rem;font-weight:700;color:var(--green)}.stat-card .label{font-size:.8rem;color:var(--text-muted);margin-top:.25rem}#bird-map{height:calc(100vh - 120px);border-radius:8px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-box{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:2rem;width:100%;max-width:360px}.login-box h1{margin-bottom:1.5rem;font-size:1.5rem}.error{color:var(--danger);font-size:.85rem;margin-top:.5rem}@media (max-width: 600px){nav{flex-wrap:wrap;gap:.75rem}main{padding:1rem .75rem}}