:root{--bg: #f4f6f9;--panel: #ffffff;--border: #d8dee6;--text: #1d2733;--muted: #6b7785;--primary: #1f6feb;--primary-dark: #1957c2;--danger: #c83737;--ok: #2a8a4a;--warn: #b9770a;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.app{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--panel);border-right:1px solid var(--border);padding:16px;display:flex;flex-direction:column;gap:4px}.sidebar h1{font-size:16px;margin:0 0 16px}.sidebar nav a{display:block;padding:8px 10px;border-radius:6px;color:var(--text)}.sidebar nav a.active{background:#eaf1fe;color:var(--primary);font-weight:600}.sidebar .spacer{flex:1}.sidebar .userbox{font-size:12px;color:var(--muted);margin-top:12px}.content{flex:1;padding:24px;max-width:1000px}.page-title{margin:0 0 16px;font-size:22px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px;margin-bottom:16px}label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}input,select,textarea{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px;background:#fff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);border-color:var(--primary)}button{padding:8px 14px;border:1px solid var(--primary);background:var(--primary);color:#fff;border-radius:6px;font-size:14px;cursor:pointer}button:hover{background:var(--primary-dark)}button.secondary{background:#fff;color:var(--text);border-color:var(--border)}button.danger{background:var(--danger);border-color:var(--danger)}button:disabled{opacity:.5;cursor:not-allowed}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}.row>*{flex:1;min-width:120px}.toolbar{display:flex;gap:8px;align-items:center;margin-bottom:12px}.toolbar .grow{flex:1}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600}.badge.DRAFT{background:#eee;color:#555}.badge.ISSUED{background:#eaf1fe;color:var(--primary)}.badge.PAID{background:#e7f6ec;color:var(--ok)}.badge.PARTIALLY_PAID{background:#fff4e0;color:var(--warn)}.badge.DUNNING{background:#fdeaea;color:var(--danger)}.badge.CANCELED{background:#eee;color:#999;text-decoration:line-through}.hint{font-size:12px;margin-top:4px}.hint.warn{color:var(--warn)}.error{background:#fdeaea;color:var(--danger);border:1px solid #f3c2c2;padding:10px 12px;border-radius:6px;white-space:pre-line}.muted{color:var(--muted)}.right{text-align:right}.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;width:100%}.login-card{width:340px}