@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:400;font-display:swap;src:url("https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn/Vazirmatn[wght].woff2") format("woff2");}
:root{--bg:#f6f8fb;--card:#fff;--text:#1b2430;--muted:#6b7789;--brand:#0a5ea8;--brand-700:#084b87;--radius:18px}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;font-family:Vazirmatn,system-ui,sans-serif;background:var(--bg);color:var(--text);direction:rtl}
.container{max-width:900px;margin:32px auto;padding:0 16px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:0 10px 30px rgba(10,20,30,.06);overflow:hidden}
.header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #e6ebf2}
.header h1{margin:0;font-size:18px}
.badge{font-size:12px;color:var(--brand);background:#eaf2fb;padding:6px 10px;border-radius:999px}
.chat{height:60vh;overflow-y:auto;padding:20px;background:linear-gradient(180deg,#fff,#fbfcfe)}
.msg{max-width:75%;padding:12px 14px;border-radius:14px;margin:8px 0;line-height:1.8;white-space:pre-wrap}
.user{background:#eef3f8;margin-left:auto;border-bottom-left-radius:4px}
.bot{background:#f9fbff;border:1px solid #edf1f7;margin-right:auto;border-bottom-right-radius:4px}
.footer{display:flex;gap:10px;padding:12px;border-top:1px solid #e6ebf2;background:#fbfdff}
.input{flex:1;border:1px solid #d7dde5;border-radius:12px;padding:12px 14px;outline:none;font-size:14px}
.button{background:var(--brand);color:#fff;border:none;border-radius:12px;padding:12px 16px;font-size:14px;cursor:pointer}
.button:disabled{opacity:.5;cursor:not-allowed}
.small{color:var(--muted);font-size:12px}
.kb-hint{padding:8px 12px;background:#fff7e6;border:1px dashed #ffd591;border-radius:10px;margin:8px 0;font-size:12px}