:root{--bg:#0b0b0d;--fg:#e6e6e6;--muted:#9aa0a6;--accent:#6ee7ff;--card:#141418;--input:#1a1b20}
*{box-sizing:border-box} html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.4 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
.wrap{min-height:100%;display:flex;flex-direction:column}
header{padding:12px 16px;position:sticky;top:0;background:rgba(11,11,13,.75);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid #1f1f27}
h1{margin:0;font-size:18px;letter-spacing:.3px}
main{flex:1;display:flex;flex-direction:column;gap:8px;padding:8px;max-width:900px;margin:0 auto;width:100%}
#log{flex:1;overflow:auto;background:var(--card);border:1px solid #22232b;border-radius:16px;padding:8px}
.msg{padding:6px 8px;margin:4px 0;border-radius:10px;background:#101218;border:1px solid #1e2030;word-wrap:break-word;white-space:pre-wrap}
.meta{font-size:12px;color:var(--muted)}
form{display:flex;gap:8px;align-items:center;position:sticky;bottom:8px}
input[type=text]{flex:1;background:var(--input);border:1px solid #2a2d39;color:var(--fg);border-radius:12px;padding:12px 14px;font-size:16px}
button{background:var(--accent);color:#001018;border:0;border-radius:12px;padding:12px 16px;font-weight:700}
.hint{text-align:center;color:var(--muted);font-size:12px;margin:6px 0 0}
@media (max-width:420px){ h1{font-size:16px} body{font-size:15px} }
.hash{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;padding:2px 6px;border-radius:6px;border:1px solid #263040;background:#0e111a;color:#9bdcff}