:root{--bg: #f4f5f7;--panel: #ffffff;--text: #1f2328;--muted: #6b7280;--border: #e3e5e8;--accent: #2f6feb;--accent-hover: #2559c4;--ok: #1a7f37;--err: #cf222e;--err-bg: #ffeef0}@media(prefers-color-scheme:dark){:root{--bg: #14171a;--panel: #1c2024;--text: #e6e8ea;--muted: #9aa3ad;--border: #2c3238;--accent: #4b86f0;--accent-hover: #3a72d8;--ok: #3fb950;--err: #f85149;--err-bg: #3a1d1f}}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Noto Sans KR,sans-serif;line-height:1.55}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 24px;background:var(--panel);border-bottom:1px solid var(--border)}.topbar h1{margin:0;font-size:19px}.status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.dot{width:9px;height:9px;border-radius:50%;background:var(--muted);flex-shrink:0}.dot.ok{background:var(--ok)}.dot.err{background:var(--err)}.layout{max-width:1100px;margin:0 auto;padding:24px 16px 48px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:20px;align-items:start}@media(max-width:820px){.layout{grid-template-columns:1fr}}.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:22px}.panel h2{margin:0;font-size:16px}.hint{margin:4px 0 18px;font-size:12px;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}.panel-actions{display:flex;align-items:center;gap:12px}.auto{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);cursor:pointer}label{display:block;margin-bottom:6px;font-size:13px;font-weight:600}input[type=text],input[type=email],textarea{width:100%;padding:10px 12px;margin-bottom:16px;font:inherit;font-size:14px;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:8px;resize:vertical}input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}button{padding:10px 18px;font:inherit;font-size:14px;font-weight:600;border:none;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer}button:hover:not(:disabled){background:var(--accent-hover)}button:disabled{opacity:.55;cursor:not-allowed}button.ghost{background:transparent;color:var(--accent);border:1px solid var(--border);padding:6px 12px;font-size:13px}button.ghost:hover:not(:disabled){background:var(--bg);color:var(--accent-hover)}.alert{margin-top:16px;padding:12px 14px;border-radius:8px;font-size:13px;border:1px solid transparent}.alert.success{color:var(--ok);border-color:var(--ok);background:transparent}.alert.error{color:var(--err);border-color:var(--err);background:var(--err-bg)}.alert ul{margin:6px 0 0;padding-left:18px}.count{margin:16px 0 10px;font-size:13px;color:var(--muted)}.list{list-style:none;margin:0;padding:0}.list li{padding:14px 0;border-top:1px solid var(--border)}.list li:last-child{padding-bottom:0}.item-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap}.item-name{font-weight:600;font-size:14px}.item-email{font-size:12px;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.item-date{font-size:12px;color:var(--muted)}.item-msg{margin:8px 0 0;font-size:14px;white-space:pre-wrap;word-break:break-word}.empty{padding:28px 0;text-align:center;color:var(--muted);font-size:14px}