:root{--bg: #f6f7f9;--panel: #ffffff;--border: #e2e5ea;--text: #1f2430;--muted: #6b7280;--primary: #2563eb;--primary-dark: #1d4ed8;--danger: #dc2626;--success: #16a34a;--warning: #d97706;--error-bg: #fef2f2;--error-text: #b91c1c}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.app{max-width:960px;margin:0 auto;padding:0 16px 48px}.app-header{display:flex;align-items:center;justify-content:space-between;padding:18px 0;border-bottom:1px solid var(--border);margin-bottom:24px}.app-title{font-size:1.25rem;font-weight:700}.app-nav{display:flex;gap:12px}.app-nav a{color:var(--muted);text-decoration:none;padding:6px 12px;border-radius:6px}.app-nav a:hover{background:var(--panel)}.app-nav a.active{color:var(--primary);background:#eef2ff;font-weight:600}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:24px}h2{margin-top:0}.field{margin-bottom:16px}.field label{display:block;font-weight:600;margin-bottom:6px}input[type=file],select,textarea,input[type=text]{width:100%;padding:10px;border:1px solid var(--border);border-radius:6px;font-size:.95rem;font-family:inherit;background:var(--panel)}textarea{resize:vertical}button{background:var(--primary);color:#fff;border:none;padding:10px 18px;border-radius:6px;font-size:.95rem;font-weight:600;cursor:pointer}button:hover:not(:disabled){background:var(--primary-dark)}button:disabled{opacity:.5;cursor:not-allowed}button.danger{background:transparent;color:var(--danger);border:1px solid var(--danger);font-weight:500}button.danger:hover:not(:disabled){background:var(--error-bg)}.error{color:var(--error-text);background:var(--error-bg);border:1px solid #fecaca;padding:10px 14px;border-radius:6px;margin:16px 0}.muted{color:var(--muted)}.upload-result{margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.8rem;font-weight:600;text-transform:capitalize}.badge-processing,.badge-uploaded{background:#fef3c7;color:var(--warning)}.badge-processed{background:#dcfce7;color:var(--success)}.badge-failed{background:#fee2e2;color:var(--error-text)}.badge-unknown,.badge-free,.badge-canceled{background:var(--border);color:var(--muted)}.badge-pro,.badge-active,.badge-trialing{background:#dbeafe;color:#1d4ed8}.badge-past_due{background:#fee2e2;color:var(--error-text)}.table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--border);border-radius:10px;overflow:hidden}.table th,.table td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border)}.table th{background:#f0f2f5;font-size:.85rem;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}.table tr:last-child td{border-bottom:none}.actions{display:flex;gap:10px;align-items:center}.actions a{color:var(--primary);font-weight:600;text-decoration:none}.chat-result{margin-top:24px;display:grid;gap:16px}.chat-answer,.chat-sources{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:18px 22px}.chat-answer h3,.chat-sources h3{margin-top:0;font-size:.9rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.chat-answer p{white-space:pre-wrap;margin:0}.source-block{margin-bottom:12px}.source-block:last-child{margin-bottom:0}.source-block strong{display:block;margin-bottom:4px}.source-page{display:inline-block;background:#eef2ff;color:var(--primary-dark);padding:2px 10px;border-radius:999px;font-size:.8rem;margin-right:6px}