:root{--bg: #f5f7f5;--surface: #ffffff;--border: #d8e0d8;--text: #1f2a1f;--muted: #5f6b5f;--primary: #2f7d32;--primary-dark: #1f5a22;--danger: #b3261e;--danger-bg: #fdeceb;--warning: #8a6d00;--warning-bg: #fdf6e3;--info: #2f6d7d;--radius: 8px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.5}a{color:var(--primary-dark)}.app-header{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.5rem;background:var(--surface);border-bottom:1px solid var(--border)}.app-header h1{font-size:1.1rem;margin:0}.container{max-width:960px;margin:0 auto;padding:1.5rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem 1.25rem;margin-bottom:1rem}.card h2,.card h3{margin-top:0}.auth-layout{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem}.auth-card{width:100%;max-width:380px}label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.25rem}input,select{width:100%;padding:.5rem .6rem;border:1px solid var(--border);border-radius:6px;font-size:.95rem;background:#fff}.field{margin-bottom:.9rem}.field-error{color:var(--danger);font-size:.82rem;margin-top:.2rem}.checkbox-field{display:flex;align-items:center;gap:.5rem}.checkbox-field input{width:auto}button{cursor:pointer;font-size:.95rem;padding:.5rem .9rem;border-radius:6px;border:1px solid var(--primary-dark);background:var(--primary);color:#fff;font-weight:600}button:hover:not(:disabled){background:var(--primary-dark)}button:disabled{opacity:.6;cursor:not-allowed}button.secondary{background:transparent;color:var(--primary-dark)}button.link{background:none;border:none;color:var(--primary-dark);padding:0;text-decoration:underline;font-weight:500}button.danger{background:var(--danger);border-color:var(--danger)}.alert{padding:.6rem .8rem;border-radius:6px;font-size:.9rem;margin-bottom:.9rem}.alert-error{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger)}.alert-success{background:#eaf5ea;color:var(--primary-dark);border:1px solid var(--primary)}.muted{color:var(--muted)}.empty-state{color:var(--muted);font-style:italic;padding:.5rem 0}table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{text-align:left;padding:.4rem .6rem;border-bottom:1px solid var(--border)}.badge{display:inline-block;padding:.1rem .5rem;border-radius:999px;font-size:.78rem;font-weight:600}.badge-info{background:#e4eef1;color:var(--info)}.badge-warning{background:var(--warning-bg);color:var(--warning)}.badge-critical{background:var(--danger-bg);color:var(--danger)}.grid{display:grid;gap:1rem}@media(min-width:640px){.grid-2{grid-template-columns:1fr 1fr}}.readings-grid{display:grid;gap:.75rem;grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.reading-tile{border:1px solid var(--border);border-radius:6px;padding:.6rem .75rem}.reading-tile .value{font-size:1.3rem;font-weight:700}.row-actions{display:flex;gap:.5rem;align-items:center}.inline-form{display:flex;gap:.5rem;flex-wrap:wrap;align-items:flex-end}