:root{--bg:#f6f7f9;--panel:#fff;--border:#d9dde3;--text:#1c2027;--muted:#6b7280;--primary:#2f6feb;--primary-text:#fff;--danger:#c0392b;--ok:#1f9d57;--chip:#eef1f5;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#14171c;--panel:#1c2027;--border:#2c323b;--text:#e7eaee;--muted:#9aa4b2;--chip:#262c34}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app-header{border-bottom:1px solid var(--border);background:var(--panel);justify-content:space-between;align-items:center;gap:16px;padding:12px 20px;display:flex}.app-header h1{margin:0;font-size:16px}.tabs{gap:4px;display:flex}.tab{border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;border-radius:8px;padding:6px 14px;font-size:14px}.tab[aria-selected=true]{background:var(--primary);color:var(--primary-text);border-color:var(--primary)}main{max-width:900px;margin:0 auto;padding:24px 20px 64px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;margin-bottom:16px;padding:18px}.row{flex-wrap:wrap;align-items:flex-end;gap:12px;display:flex}.field{flex-direction:column;gap:4px;min-width:140px;display:flex}label{color:var(--muted);font-size:12px}input,select,textarea{font:inherit;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:8px;width:100%;padding:8px 10px}textarea{resize:vertical;min-height:80px}button{font:inherit;border:1px solid var(--primary);background:var(--primary);color:var(--primary-text);cursor:pointer;border-radius:8px;padding:8px 16px}button.secondary{background:var(--panel);color:var(--text);border-color:var(--border)}button.danger{background:var(--danger);border-color:var(--danger)}button:disabled{opacity:.5;cursor:not-allowed}.muted{color:var(--muted);font-size:13px}.error{color:var(--danger);margin:8px 0;font-size:14px}.chip{background:var(--chip);border-radius:999px;margin-right:6px;padding:2px 8px;font-size:12px;display:inline-block}.usage{color:var(--muted);margin-top:8px;font-size:13px}.center{text-align:center;place-items:center;min-height:60vh;display:grid}h2{margin:0 0 12px;font-size:18px}h3{margin:0 0 6px;font-size:15px}ul.plain{margin:6px 0;padding-left:18px}.segment{border:1px solid var(--border);background:var(--bg);border-radius:10px;gap:2px;padding:3px;display:inline-flex}.segment button{color:var(--muted);background:0 0;border:none;border-radius:8px;padding:7px 14px;font-size:13px}.segment button[aria-pressed=true]{background:var(--panel);color:var(--text);box-shadow:0 0 0 1px var(--border)}.segment button:disabled{opacity:.5}.stack{flex-direction:column;gap:12px;display:flex}.stack>.field{min-width:0}.actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:4px;display:flex}.history-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.history-item{border:1px solid var(--border);background:var(--bg);border-radius:10px;grid-template-columns:auto 1fr;align-items:start;gap:10px 12px;padding:12px 14px;display:grid}.history-item .meta{flex-direction:column;gap:2px;min-width:0;display:flex}.history-item .meta-title{word-break:break-all;font-size:14px;font-weight:600}.history-item .meta-line{color:var(--muted);word-break:break-word;font-size:12px}.chip.status-sent,.chip.status-delivered{background:color-mix(in srgb,var(--ok)18%,var(--chip));color:var(--ok)}.chip.status-failed,.chip.status-bounced,.chip.status-complained,.chip.status-suppressed{background:color-mix(in srgb,var(--danger)16%,var(--chip));color:var(--danger)}