:root{--bg:#07111f;--panel:#0f2138;--text:#f7fbff;--muted:#a8b4c6;--cyan:#38d5ff;--green:#37f0a0;--purple:#8b5cf6;--red:#ff6b6b;--border:rgba(255,255,255,.13)}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:radial-gradient(circle at top left,rgba(56,213,255,.15),transparent 35%),var(--bg);color:var(--text)}a{color:inherit}.container{width:min(1120px,calc(100% - 36px));margin:0 auto}.header{border-bottom:1px solid var(--border);background:rgba(7,17,31,.8);backdrop-filter:blur(14px)}.nav{height:72px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:900;font-size:22px;text-decoration:none}.brand span{color:var(--green)}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;padding:12px 18px;background:linear-gradient(135deg,var(--cyan),var(--green));color:#06101c;font-weight:800;text-decoration:none;cursor:pointer}.btn.secondary{background:rgba(255,255,255,.08);color:var(--text);border:1px solid var(--border)}.btn.danger{background:rgba(255,107,107,.18);color:#ffdada;border:1px solid rgba(255,107,107,.35)}.hero{padding:74px 0}.grid{display:grid;grid-template-columns:1fr 420px;gap:36px;align-items:center}h1{font-size:clamp(38px,6vw,68px);line-height:.95;letter-spacing:-.05em;margin:0 0 18px}h2{font-size:32px;margin:0 0 18px}.lead{font-size:20px;line-height:1.55;color:var(--muted)}.panel,.card{background:rgba(255,255,255,.06);border:1px solid var(--border);border-radius:24px;padding:26px;box-shadow:0 20px 70px rgba(0,0,0,.25)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0}.card p{color:var(--muted)}form{display:grid;gap:14px}input,select,textarea{width:100%;padding:14px 16px;border-radius:14px;border:1px solid var(--border);background:rgba(255,255,255,.08);color:var(--text)}select option{color:#07111f}label{font-weight:700;color:#dbeafe}.notice{padding:14px 16px;border-radius:16px;background:rgba(55,240,160,.1);border:1px solid rgba(55,240,160,.25);color:#d7ffe9}.error{background:rgba(255,80,80,.1);border-color:rgba(255,80,80,.25);color:#ffd6d6}.dashboard{padding:34px 0}.dash-grid{display:grid;grid-template-columns:280px 1fr;gap:20px}.sidebar{background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:20px;padding:20px}.sidebar a{display:block;padding:12px 10px;text-decoration:none;color:var(--muted)}.sidebar a:hover{color:var(--text)}.chatbox{height:650px;display:flex;flex-direction:column}.messages{flex:1;overflow:auto;padding:18px;background:rgba(0,0,0,.18);border-radius:18px;border:1px solid var(--border)}.msg{padding:12px 14px;border-radius:16px;margin:10px 0;max-width:86%;line-height:1.45;white-space:pre-wrap}.user{background:rgba(55,240,160,.16);margin-left:auto}.emma{background:rgba(56,213,255,.12)}.chat-form{display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:12px}.small{font-size:13px;color:var(--muted)}table{width:100%;border-collapse:collapse}td,th{border-bottom:1px solid var(--border);padding:10px;text-align:left;color:#dbeafe;vertical-align:top}.footer{padding:30px 0;color:var(--muted);border-top:1px solid var(--border)}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:rgba(56,213,255,.12);color:#dbeafe;font-size:12px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat{background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:18px;padding:16px}.stat strong{font-size:24px;display:block}.muted{color:var(--muted)}@media(max-width:850px){.grid,.dash-grid,.cards,.stats{grid-template-columns:1fr}.chatbox{height:600px}.nav{gap:12px}.brand{font-size:18px}}
/* PWA mobile-first improvements */
html, body { -webkit-tap-highlight-color: transparent; }
input, button, textarea, select { font-size: 16px; }
@media(max-width:600px){
  .container{width:min(100% - 24px,1120px)}
  .hero{padding:38px 0}
  .panel,.card{padding:20px;border-radius:20px}
  .btn{width:100%;margin-top:8px}
  .nav .btn{width:auto}
  .chat-form{grid-template-columns:1fr}
  .messages{font-size:15px}
}