:root{--bg:#060a1a;--bg2:#0b1230;--card:#0f1738;--line:#1e2a5e;--txt:#eef1ff;--mut:#9aa6d0;--a:#6c3bff;--b:#00d4ff;--ok:#00e676;--warn:#ffb300;--danger:#ff4d6d;--r:18px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',Tahoma,Arial,sans-serif;background:radial-gradient(1000px 500px at 80% -10%,#2a1b6b55,transparent),radial-gradient(800px 400px at 10% 10%,#00d4ff22,transparent),var(--bg);color:var(--txt);line-height:1.8;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.container{width:min(1200px,94vw);margin:auto}
.bg-orb{position:fixed;border-radius:50%;filter:blur(90px);opacity:.35;pointer-events:none;z-index:0}
.orb1{width:420px;height:420px;background:#6c3bff;top:-120px;left:-120px;animation:f 8s ease-in-out infinite alternate}
.orb2{width:360px;height:360px;background:#00d4ff;bottom:-100px;right:-100px;animation:f 10s ease-in-out infinite alternate-reverse}
@keyframes f{to{transform:translate(40px,40px)}}
/* NAV */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:#060a1acc;border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:10px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:22px}
.logo-mark{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,var(--a),var(--b));display:grid;place-items:center;font-size:24px;box-shadow:0 6px 24px #6c3bff66}
.logo small{display:block;font-size:11px;color:var(--mut);font-weight:400;letter-spacing:1px}
.nav-links{display:flex;gap:18px;align-items:center;font-size:15px;color:var(--mut)}
.nav-links a:hover{color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:14px;border:1px solid var(--line);background:#ffffff10;color:#fff;font-weight:700;cursor:pointer;transition:.2s;font-size:15px}
.btn:hover{transform:translateY(-2px)}
.btn-p{background:linear-gradient(135deg,var(--a),var(--b));border:0;box-shadow:0 8px 30px #6c3bff55}
.btn-g{background:#ffffff08}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:11px}
.burger{display:none;background:none;border:1px solid var(--line);color:#fff;border-radius:10px;padding:8px 12px;font-size:20px}
/* HERO */
.hero{position:relative;z-index:1;text-align:center;padding:70px 0 30px}
.badge{display:inline-flex;gap:8px;align-items:center;background:#6c3bff22;border:1px solid #6c3bff66;padding:7px 16px;border-radius:100px;font-size:13px;color:#cdbfff}
.hero h1{font-size:clamp(30px,5.5vw,58px);line-height:1.35;margin:18px 0 10px;font-weight:900}
.grad{background:linear-gradient(90deg,#a78bff,#00d4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--mut);font-size:clamp(15px,2.4vw,19px);max-width:720px;margin:auto}
.hero-cta{display:flex;gap:12px;justify-content:center;margin-top:24px;flex-wrap:wrap}
.stats{display:flex;gap:14px;justify-content:center;margin:30px 0;flex-wrap:wrap}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 24px;min-width:150px}
.stat b{font-size:24px;display:block}.stat span{color:var(--mut);font-size:13px}
/* chat preview */
.mock{max-width:760px;margin:20px auto;background:#0a1030ee;border:1px solid var(--line);border-radius:22px;overflow:hidden;text-align:right;box-shadow:0 20px 80px #00000088}
.mock-h{display:flex;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);align-items:center}
.dot{width:11px;height:11px;border-radius:50%}
.msg{padding:12px 16px;display:flex;gap:10px;align-items:flex-start;animation:up .5s}
.msg.u{flex-direction:row-reverse}.bubble{padding:11px 15px;border-radius:15px;max-width:82%;font-size:15px}
.u .bubble{background:linear-gradient(135deg,var(--a),#4a1fd6)}
.ai .bubble{background:#ffffff0d;border:1px solid var(--line)}
@keyframes up{from{opacity:0;transform:translateY(10px)}}
/* sections grid */
.sec{padding:50px 0;position:relative;z-index:1}
.sec-h{text-align:center;margin-bottom:26px}.sec-h h2{font-size:clamp(22px,4vw,34px)}.sec-h p{color:var(--mut)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:linear-gradient(180deg,#101842,#0b1130);border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.25s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-5px);border-color:var(--a);box-shadow:0 14px 40px #6c3bff33}
.card .ic{font-size:34px}.card h3{margin:10px 0 6px}.card p{color:var(--mut);font-size:14px}
/* models */
.model-pill{display:inline-flex;align-items:center;gap:7px;background:#ffffff0c;border:1px solid var(--line);padding:8px 15px;border-radius:100px;font-size:13px;margin:5px}
/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.price{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px;text-align:center}
.price.hot{border:2px solid var(--a);transform:scale(1.02);box-shadow:0 10px 50px #6c3bff44}
.price h3{font-size:20px}.price .pr{font-size:36px;font-weight:900;margin:10px 0}.price ul{list-style:none;color:var(--mut);font-size:14px;margin:12px 0 18px;text-align:right}
/* footer */
footer{border-top:1px solid var(--line);margin-top:40px;padding:34px 0;background:#04061add;position:relative;z-index:1}
.f-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.socials{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.soc{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#ffffff0d;border:1px solid var(--line);font-size:19px;transition:.2s}
.soc:hover{background:linear-gradient(135deg,var(--a),var(--b))}
.copy{text-align:center;color:var(--mut);font-size:13px;margin-top:22px;border-top:1px dashed var(--line);padding-top:16px}
/* forms */
.form-card{max-width:460px;margin:40px auto;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:30px;position:relative;z-index:1}
.form-card input,.form-card select,.form-card textarea{width:100%;padding:13px 15px;margin:8px 0;border-radius:12px;border:1px solid var(--line);background:#070c28;color:#fff;font-size:15px;font-family:inherit}
.form-card label{font-size:13px;color:var(--mut)}
.alert{padding:12px;border-radius:12px;margin:10px 0;font-size:14px}
.alert-ok{background:#00e67622;border:1px solid #00e67666}.alert-bad{background:#ff4d6d22;border:1px solid #ff4d6d66}
/* chat page */
.chat-wrap{display:grid;grid-template-columns:280px 1fr;gap:14px;height:calc(100vh - 70px);padding:14px 0}
.side{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:14px;overflow:auto}
.main-chat{background:#080d26;border:1px solid var(--line);border-radius:18px;display:flex;flex-direction:column;overflow:hidden}
#msgs{flex:1;overflow:auto;padding:18px;display:flex;flex-direction:column;gap:12px}
.chat-in{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:#0a1030}
.chat-in input{flex:1;padding:13px;border-radius:13px;border:1px solid var(--line);background:#060a24;color:#fff;font-size:15px;font-family:inherit}
select.model-sel{width:100%;padding:11px;border-radius:12px;background:#060a24;color:#fff;border:1px solid var(--line);margin:8px 0}
/* admin */
.admin{display:grid;grid-template-columns:230px 1fr;gap:16px;padding:18px 0;min-height:80vh}
.ad-side{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:14px;height:fit-content;position:sticky;top:80px}
.ad-side a{display:block;padding:11px 14px;border-radius:12px;color:var(--mut);font-size:14px}
.ad-side a.on,.ad-side a:hover{background:linear-gradient(135deg,var(--a),var(--b));color:#fff}
.ad-main{background:#080d26;border:1px solid var(--line);border-radius:18px;padding:22px;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:11px;border-bottom:1px solid var(--line);text-align:right}
th{color:var(--mut);font-size:12px}
.kpi{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:18px}
.kpi div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;text-align:center}
.kpi b{font-size:26px;display:block}
/* PWA popups */
.pwa-pop{position:fixed;bottom:16px;right:16px;left:16px;margin:auto;max-width:430px;background:#0d1440f5;border:1px solid var(--a);border-radius:20px;padding:18px;z-index:999;box-shadow:0 20px 60px #000;display:none;backdrop-filter:blur(10px)}
.pwa-pop.show{display:block;animation:up .4s}
.pwa-pop h4{margin-bottom:6px}.pwa-pop p{font-size:13px;color:var(--mut)}
.pwa-btns{display:flex;gap:8px;margin-top:12px}
/* responsive */
@media(max-width:900px){.chat-wrap{grid-template-columns:1fr}.side{display:none}.side.open{display:block}.admin{grid-template-columns:1fr}.ad-side{position:static}}
@media(max-width:640px){.nav-links{display:none}.nav-links.open{display:flex;position:absolute;top:64px;right:3vw;left:3vw;background:#0b1230f5;flex-direction:column;padding:18px;border-radius:16px;border:1px solid var(--line)}.burger{display:block}.hero{padding:44px 0 20px}.form-card{margin:20px auto}}