:root{--bg: #f4f6fb;--surface: #ffffff;--border: #e2e6ef;--text: #1a2030;--muted: #6b7280;--primary: #0b5cff;--primary-hover: #0847c9;--danger: #d92d20;--success: #067647;--warning: #b54708;--radius: 10px;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04)}@media (prefers-color-scheme: dark){:root{--bg: #0e1116;--surface: #171b22;--border: #262c36;--text: #e6e9ef;--muted: #9aa4b2;--primary: #4d8bff;--primary-hover: #6ba0ff;--shadow: none}}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5}a{color:var(--primary);text-decoration:none}h1{font-size:1.5rem;margin:0 0 .25rem}h2{font-size:1.15rem;margin:0 0 1rem}button{font:inherit;cursor:pointer;border:none;border-radius:8px;padding:.55rem 1rem;background:var(--primary);color:#fff;font-weight:600}button:hover{background:var(--primary-hover)}button:disabled{opacity:.55;cursor:not-allowed}button.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}button.secondary:hover{background:var(--bg)}button.danger{background:var(--danger)}button.small{padding:.3rem .6rem;font-size:.85rem}label{display:block;font-size:.85rem;font-weight:600;color:var(--muted);margin-bottom:.3rem}input,select,textarea{width:100%;font:inherit;padding:.55rem .7rem;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);outline-offset:-1px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}.grid{display:grid;gap:1rem}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 720px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.row{display:flex;gap:.75rem;align-items:center}.spacer{flex:1}.muted{color:var(--muted)}.error{color:var(--danger);font-size:.9rem}.field{margin-bottom:1rem}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:.6rem .75rem;border-bottom:1px solid var(--border)}th{font-size:.78rem;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}.badge{display:inline-block;padding:.15rem .55rem;border-radius:999px;font-size:.78rem;font-weight:600}.badge-pending{background:#fff4e5;color:var(--warning)}.badge-sent{background:#e6f4ea;color:var(--success)}.badge-failed{background:#fdecea;color:var(--danger)}.badge-cancelled,.badge-reverted{background:var(--border);color:var(--muted)}