:root{--color-primary: #00612D;--color-primary-light: #0a7a3d;--color-accent: #FFCC00;--color-bg: #F5F5F5;--color-surface: #FFFFFF;--color-text: #1a1a1a;--color-text-muted: #666666;--color-border: #e0e0e0;--color-danger: #c0392b;--color-success: #1e7e34;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.08)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--color-bg);color:var(--color-text)}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);border:1px solid transparent;font-size:14px;font-weight:600;transition:opacity .15s}.btn:hover{opacity:.9}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff}.btn-accent{background:var(--color-accent);color:#1a1a1a}.btn-outline{background:transparent;border-color:var(--color-border);color:var(--color-text)}.btn-danger{background:var(--color-danger);color:#fff}.btn-sm{padding:5px 10px;font-size:13px}input,select,textarea{font-family:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--color-border);border-radius:var(--radius);width:100%;background:#fff}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-primary)}label{display:block;font-size:13px;font-weight:600;color:var(--color-text-muted);margin-bottom:4px}.field{margin-bottom:14px}.card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}table{width:100%;border-collapse:collapse}th,td{text-align:start;padding:10px 12px;border-bottom:1px solid var(--color-border);font-size:14px}th{color:var(--color-text-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}tr:hover td{background:#fafafa}.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}.badge-draft{background:#eee;color:#555}.badge-sent,.badge-unpaid{background:#e3f2fd;color:#1565c0}.badge-paid{background:#e6f4ea;color:var(--color-success)}.badge-partially_paid{background:#fff8e1;color:#b8860b}.badge-overdue{background:#fdecea;color:var(--color-danger)}.badge-void{background:#eee;color:#999}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.page-header h1{font-size:22px;margin:0}.error-text{color:var(--color-danger);font-size:13px;margin-top:6px}.muted{color:var(--color-text-muted);font-size:13px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}.stat-card{padding:16px 20px}.stat-card .label{font-size:12px;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em}.stat-card .value{font-size:26px;font-weight:700;margin-top:4px}