:root{--bg: #0f1216;--panel: #171b21;--panel-2: #1f242c;--border: #2a313b;--text: #e6e9ee;--muted: #8b96a5;--accent: #4f8cff;--green: #3fb950;--red: #f85149;--amber: #d29922;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{color:var(--accent);text-decoration:none}.layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.sidebar{background:var(--panel);border-right:1px solid var(--border);padding:16px}.sidebar h1{font-size:16px;margin:0 0 20px}.nav a{display:block;padding:9px 12px;border-radius:8px;color:var(--muted);margin-bottom:4px}.nav a.active,.nav a:hover{background:var(--panel-2);color:var(--text)}.main{padding:24px 32px;overflow:auto}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.header h2{margin:0;font-size:22px}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:16px}.btn{background:var(--accent);color:#fff;border:0;border-radius:8px;padding:9px 16px;font-size:14px;cursor:pointer}.btn.secondary{background:var(--panel-2);color:var(--text);border:1px solid var(--border)}.btn.danger{background:var(--red)}.btn:disabled{opacity:.5;cursor:default}input,select,textarea{width:100%;background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:9px 11px;font-size:14px;margin-top:4px}label{display:block;font-size:13px;color:var(--muted);margin-top:12px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:500}.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:12px;background:var(--panel-2)}.badge.active,.badge.delivered,.badge.sent{color:var(--green)}.badge.disabled,.badge.failed{color:var(--red)}.badge.queued,.badge.received{color:var(--amber)}.muted{color:var(--muted)}.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;word-break:break-all}.row{display:flex;gap:12px;align-items:center}.center-screen{display:grid;place-items:center;min-height:100vh}.login-card{width:340px}.error{color:var(--red);font-size:13px;margin-top:10px}.bubble{padding:10px 14px;border-radius:12px;margin:6px 0;max-width:70%}.bubble.inbound{background:var(--panel-2)}.bubble.outbound{background:#1d3a66;margin-left:auto}