:root{
  --bg:#f5f6fb; --panel:#ffffff; --ink:#11131a; --muted:#616b7d; --line:#e6e8f0;
  --brand:#6C5CE7; --brand2:#A66CFF; --grad:linear-gradient(135deg,#6C5CE7 0%,#A66CFF 100%);
  --dark:#0e1016; --ok:#16a34a; --radius:16px; --shadow:0 12px 40px rgba(20,20,60,.10);
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
.wrap{max-width:920px;margin:0 auto;padding:0 20px}

/* Brand wordmark */
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:22px;letter-spacing:-.02em}
.brand .mark{width:30px;height:30px;border-radius:9px;background:var(--grad);display:inline-block;box-shadow:0 4px 14px rgba(108,92,231,.45)}
.brand b{font-weight:800}
.brand .ai{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* Top nav */
.nav{display:flex;align-items:center;justify-content:space-between;padding:22px 0}
.nav .tag{color:var(--muted);font-size:13px;font-weight:500}

/* Hero */
.hero{padding:26px 0 10px}
.hero h1{font-size:40px;line-height:1.1;letter-spacing:-.03em;margin:.2em 0 .35em;font-weight:800}
.hero h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{font-size:18px;color:var(--muted);max-width:620px;margin:0 0 26px}

/* Generator card */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.gen{padding:22px}
.genrow{display:flex;gap:10px;flex-wrap:wrap}
.input{flex:1;min-width:240px;border:1.5px solid var(--line);border-radius:12px;padding:15px 16px;font-size:16px;font-family:var(--font);outline:none;transition:border-color .15s}
.input:focus{border-color:var(--brand)}
.btn{border:0;border-radius:12px;padding:15px 22px;font-size:16px;font-weight:700;font-family:var(--font);color:#fff;background:var(--grad);cursor:pointer;transition:transform .08s,box-shadow .15s;box-shadow:0 8px 22px rgba(108,92,231,.35)}
.btn:hover{transform:translateY(-1px)}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.btn.ghost{background:#fff;color:var(--brand);border:1.5px solid var(--line);box-shadow:none}
.hint{color:var(--muted);font-size:13px;margin-top:12px}

/* status / spinner */
.status{display:none;align-items:center;gap:12px;margin-top:18px;color:var(--muted);font-size:15px}
.status.show{display:flex}
.spinner{width:20px;height:20px;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.err{display:none;margin-top:16px;background:#fff2f2;border:1px solid #ffd4d4;color:#c0392b;border-radius:12px;padding:14px 16px;font-size:14px}
.err.show{display:block}

/* result */
.result{display:none;margin-top:18px;border-top:1px solid var(--line);padding-top:18px}
.result.show{display:block}
.result h3{margin:0 0 4px;font-size:20px}
.result .summary{color:var(--muted);margin:0 0 16px}
.linkbox{display:flex;gap:8px;flex-wrap:wrap;align-items:center;background:#f3f1ff;border:1px solid #e3def9;border-radius:12px;padding:10px 12px}
.linkbox code{flex:1;min-width:200px;font-size:14px;color:#4b3fc0;word-break:break-all}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.chip{background:#f1f2f7;border:1px solid var(--line);border-radius:999px;padding:7px 13px;font-size:13px;color:var(--muted)}

/* feature row */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:34px 0}
.feat{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px}
.feat .ic{width:34px;height:34px;border-radius:9px;background:var(--grad);margin-bottom:10px;opacity:.9}
.feat h4{margin:0 0 5px;font-size:16px}
.feat p{margin:0;color:var(--muted);font-size:14px}
.foot{color:var(--muted);font-size:13px;text-align:center;padding:30px 0 40px}

/* ===== Chat widget ===== */
.chat-body{background:linear-gradient(180deg,#f0f1f8,#f5f6fb);min-height:100vh}
.chat-shell{max-width:560px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;background:var(--panel)}
.chat-head{background:var(--grad);color:#fff;padding:18px 20px;display:flex;align-items:center;gap:13px}
.chat-head .av{width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px}
.chat-head .who{font-weight:700;font-size:17px;line-height:1.2}
.chat-head .role{font-size:12.5px;opacity:.9}
.chat-head .dot{width:8px;height:8px;border-radius:50%;background:#5df08a;display:inline-block;margin-right:5px;vertical-align:middle}
.msgs{flex:1;overflow-y:auto;padding:20px 16px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:82%;padding:11px 15px;border-radius:16px;font-size:15px;white-space:pre-wrap;word-wrap:break-word}
.msg.bot{align-self:flex-start;background:#f0f1f6;color:var(--ink);border-bottom-left-radius:5px}
.msg.me{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:5px}
.typing{align-self:flex-start;background:#f0f1f6;border-radius:16px;padding:13px 16px;display:none}
.typing.show{display:block}
.typing span{display:inline-block;width:7px;height:7px;border-radius:50%;background:#b9bccb;margin:0 2px;animation:bounce 1.3s infinite}
.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}
@keyframes bounce{0%,60%,100%{transform:translateY(0)}30%{transform:translateY(-6px)}}
.sugg{display:flex;gap:8px;flex-wrap:wrap;padding:0 16px 10px}
.sugg button{background:#fff;border:1.5px solid var(--line);color:var(--brand);border-radius:999px;padding:8px 14px;font-size:13.5px;cursor:pointer;font-family:var(--font);transition:background .12s}
.sugg button:hover{background:#f3f1ff}
.composer{display:flex;gap:8px;padding:12px 14px;border-top:1px solid var(--line);background:#fff}
.composer input{flex:1;border:1.5px solid var(--line);border-radius:999px;padding:13px 17px;font-size:15px;font-family:var(--font);outline:none}
.composer input:focus{border-color:var(--brand)}
.composer .send{border:0;border-radius:50%;width:46px;height:46px;background:var(--grad);color:#fff;font-size:19px;cursor:pointer;flex:0 0 auto}
.composer .send:disabled{opacity:.5;cursor:not-allowed}
.powered{text-align:center;font-size:12px;color:var(--muted);padding:9px}
.powered a{font-weight:700}

@media(max-width:680px){
  .hero h1{font-size:30px}.hero p.sub{font-size:16px}
  .feats{grid-template-columns:1fr}
}