/* Binance-inspired Demo customer experience • desktop, mobile and embedded widget */
:root{--vnp-gold:#f8bd2b;--vnp-deep:#153966;--vnp-ink:#172e4d;--vnp-muted:#718098;--vnp-line:#e9edf3}
html,body{font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--vnp-ink)}
body{background:#f6f8fb}
button{cursor:pointer}
button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(32,102,176,.25);outline-offset:2px}
.chat-page{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(380px,.98fr);align-items:center;gap:clamp(22px,4vw,64px);max-width:1260px;width:100%;margin:0 auto;padding:clamp(20px,3vw,40px);height:100dvh;min-height:560px;position:relative}
.chat-page:before{content:"";position:fixed;z-index:-1;inset:0;background:radial-gradient(circle at 0 5%,#fff4cc 0,transparent 33%),radial-gradient(circle at 100% 95%,#e7eef8 0,transparent 34%),#f6f8fb}
.brand-showcase{display:flex;flex-direction:column;min-height:0;height:min(820px,calc(100dvh - 80px));max-height:820px;overflow:hidden;border-radius:30px;padding:clamp(24px,3vw,42px);background:linear-gradient(148deg,#102f56 0%,#174778 68%,#22517a 100%);color:#fff;position:relative;isolation:isolate;box-shadow:0 26px 64px rgba(21,48,80,.15)}
.brand-showcase:before{content:"";position:absolute;right:-145px;top:85px;width:390px;height:390px;border:1px solid rgba(255,255,255,.12);border-radius:50%;box-shadow:0 0 0 65px rgba(255,255,255,.035),0 0 0 140px rgba(255,255,255,.025);z-index:-1}
.showcase-top{display:flex;align-items:center;gap:13px}
.showcase-mark{width:62px;height:62px;display:grid;place-items:center;background:#fff;border-radius:18px;box-shadow:0 8px 24px #0a254535}
.showcase-mark img{width:47px;height:47px}
.showcase-wordmark{display:grid;gap:3px;letter-spacing:.03em}.showcase-wordmark strong{font-size:22px;line-height:1.1;font-weight:850;letter-spacing:.07em}.showcase-wordmark small{font-size:10px;letter-spacing:.22em;color:#cddcef;font-weight:700}
.showcase-copy{position:relative;z-index:2;margin-top:clamp(30px,6vh,84px);max-width:480px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:9px 14px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);border-radius:999px;color:#fbe6a4;font-size:11px;font-weight:750;letter-spacing:.1em}
.eyebrow i{width:7px;height:7px;background:#f9c43b;border-radius:50%;box-shadow:0 0 0 4px rgba(249,196,59,.16)}
.showcase-copy h2{font-size:clamp(34px,3.6vw,55px);letter-spacing:-.045em;line-height:1.11;font-weight:850;margin:26px 0 18px}.showcase-copy h2 em{font-style:normal;color:#ffcd4d}
.showcase-copy p{font-size:15px;line-height:1.85;color:#d3e0ec;max-width:450px;margin:0}
.showcase-photo{position:relative;min-height:140px;flex:1;margin-top:34px;border-radius:22px;overflow:hidden;background:linear-gradient(125deg,rgba(247,187,42,.04),rgba(22,63,102,.08)),url("/assets/crypto-demo-scene.svg") center 48%/cover no-repeat,#f3bf4a;border:1px solid rgba(255,255,255,.21)}
.showcase-photo:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 42%,rgba(8,31,55,.78))}
.showcase-photo-caption{position:absolute;bottom:20px;left:20px;right:20px;display:flex;align-items:center;gap:11px}.showcase-photo-caption strong,.showcase-photo-caption small{display:block}.showcase-photo-caption strong{font-size:14px}.showcase-photo-caption small{color:#e6edf5;font-size:11px;margin-top:3px}
.photo-icon{width:43px;height:43px;border-radius:12px;display:grid;place-items:center;background:var(--vnp-gold);color:#143a63;font-size:21px}
.showcase-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:27px;color:#c8d6e7;font-size:10px;font-weight:750;letter-spacing:.16em}.showcase-bottom span:last-child{color:#f6cf5a;letter-spacing:0}
.chat-shell{position:relative;width:100%;height:min(820px,calc(100dvh - 80px));max-height:820px;border-radius:26px;overflow:hidden;border:1px solid #e8ebf1;background:#fff;box-shadow:0 25px 70px rgba(23,56,93,.15);min-height:0}
.chat-header{height:84px;flex-basis:84px;padding:16px 22px;gap:13px;color:#133960;background:linear-gradient(112deg,#ffdf63,#f7bd2e 78%);box-shadow:0 4px 14px rgba(159,118,18,.12)}
.avatar{width:52px;height:52px;flex-basis:52px;background:#fff;border:1px solid rgba(255,255,255,.75);color:var(--vnp-ink);box-shadow:0 5px 16px #0b284c35}
.agent-avatar img{width:100%;height:100%;object-fit:cover}
.agent-heading b{font-size:17px;font-weight:800;color:#163961;letter-spacing:-.01em}.verified-mark{display:inline-grid;place-items:center;width:15px;height:15px;font-size:10px;background:#fff8d7;color:#153964;border-radius:50%;vertical-align:middle;margin-left:4px}
.status-line{display:flex;align-items:center;gap:8px;font-size:12px;color:#345371;margin-top:5px}
.online-dot{width:8px;height:8px;border-radius:50%;background:#60d7a0;box-shadow:0 0 0 3px rgba(96,215,160,.13)}
.header-action{color:#163961;border-radius:12px;width:38px;height:38px;flex:0 0 38px}.header-action:hover{background:rgba(255,255,255,.4)}
body:not(.embed-mode) .close-btn{display:none}
.help-menu{position:absolute;right:16px;top:76px;width:min(320px,calc(100% - 32px));padding:17px 18px;z-index:30;background:#fff;border:1px solid var(--vnp-line);border-radius:15px;box-shadow:0 16px 42px rgba(22,49,79,.2);line-height:1.6;font-size:12px}
.help-menu strong{display:block;font-size:14px;color:#153c65}.help-menu p{margin:6px 0;color:#52657d}.help-menu span{display:block;padding-top:10px;border-top:1px solid var(--vnp-line);color:#8a6878}
.welcome{background:linear-gradient(180deg,#fffcf5 0%,#fff 43%);padding:clamp(20px,3vh,32px) clamp(18px,4vw,38px) 20px;scrollbar-width:thin}
.welcome-card{margin:0 auto 22px;padding:0;text-align:center}.welcome-avatar{width:76px;height:76px;display:grid;place-items:center;margin:0 auto 15px;border-radius:24px;background:#fff;border:1px solid #ffe7a5;box-shadow:0 10px 26px rgba(215,171,60,.15)}.welcome-avatar img{width:59px;height:59px;object-fit:contain}
.welcome-kicker{font-size:10px;font-weight:850;letter-spacing:.12em;color:#b27d18;margin-bottom:11px}
.welcome-card h1{color:#173b65;font-size:clamp(23px,2vw,28px);line-height:1.24;font-weight:850;letter-spacing:-.035em;margin:0}
.welcome-card p{margin:10px auto 0;max-width:340px;font-size:13px;line-height:1.75;color:#6b7b8c}
.entry-form-card{background:#fff;border:1px solid #e9edf2;border-radius:20px;box-shadow:0 10px 32px rgba(28,69,109,.06);padding:clamp(17px,2.3vw,24px)}
.form-card-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:7px;margin-bottom:17px}.form-card-heading strong{font-size:14px;color:#1b3656}.form-card-heading span{font-size:11px;color:#8896a7}
.field{margin:14px 0}.field span{color:#314963;font-weight:750;font-size:12px;margin-bottom:8px}.field span i{font-style:normal;color:#dd8954}.field input{height:50px;border:1px solid #e3e9ef;border-radius:12px;background:#fbfcfe;padding:0 15px;font-size:15px;color:#173b63;transition:border-color .15s,box-shadow .15s}.field input::placeholder{color:#a6b0bc}.field input:focus{background:#fff;border-color:#e1ad27;box-shadow:0 0 0 4px rgba(248,189,43,.17);outline:0}
.start-btn{display:flex;align-items:center;justify-content:center;gap:14px;height:52px;margin-top:19px;border-radius:12px;background:linear-gradient(110deg,#ffcd4e,#f6b52b);color:#153960;font-size:14px;font-weight:850;box-shadow:0 9px 22px rgba(220,163,37,.2);transition:transform .18s,box-shadow .18s}.start-btn:hover{background:#f7be37;transform:translateY(-1px);box-shadow:0 12px 25px rgba(220,163,37,.26)}.start-btn span{font-size:21px;line-height:1}
.form-error{font-size:12px;margin-top:8px;min-height:0}.form-error:empty{display:none}
.privacy-note{display:flex;gap:8px;align-items:flex-start;justify-content:center;text-align:center;line-height:1.5;color:#8b98a8;font-size:11px;margin:15px 0 0}.privacy-note span{font-size:16px;color:#b7a06e;line-height:1}
.welcome-bottom{display:flex;align-items:center;justify-content:center;gap:7px;text-align:center;margin-top:18px;color:#8290a1;font-size:11px}.welcome-bottom i{width:7px;height:7px;border-radius:50%;background:#4bbe8b}
.chat{background:#fff}.notice{padding:10px 16px;background:#fff9e9;color:#6d634d;border-bottom:1px solid #ffedbd;font-size:11px;line-height:1.5}
.messages{background:linear-gradient(180deg,#f9fbfd 0%,#fff 38%);padding:20px 19px 28px}.msg{margin:11px 0;max-width:84%}.bubble{padding:11px 14px;border-radius:14px 14px 14px 5px;color:#294057;background:#fff;border:1px solid #e9edf2;box-shadow:0 3px 14px rgba(33,67,97,.045);font-size:13px;line-height:1.55}.visitor .bubble{background:#1b5b92;color:#fff;border:0;border-radius:14px 14px 5px 14px;box-shadow:0 4px 13px #174c7724}.msg.system .bubble{border-radius:14px;background:#f0f4f9;color:#425670}.bubble small{font-size:10px}.typing{padding:9px 17px;color:#728399}.new-message{background:#1b5b92;color:#fff;font-size:12px}
.composer{background:#fff;border-top:1px solid #e8edf3;gap:5px;padding:12px 14px max(12px,env(safe-area-inset-bottom));min-height:70px}.composer textarea{background:#f5f8fc;border:1px solid #e8edf3;border-radius:13px;padding:10px 13px;font-size:14px;color:#193d65;min-height:42px;height:42px;line-height:21px}.composer textarea:focus{border-color:#b8cadc;outline:0;background:#fff}.composer-icon,.composer .attach{background:transparent;color:#54718e;box-shadow:none}.composer-icon:hover,.composer .attach:hover{background:#edf4fa;color:#153e69}.send-btn{background:#f8bf36;color:#143963;box-shadow:0 5px 13px rgba(222,170,41,.22)}.send-btn:hover{background:#f4b326}.upload-panel{background:#fffaf0}.progress span{background:#d7a223}
.rating{padding:28px}.rating h3{color:#173b65}.rating textarea{padding:13px;border-color:#dce5ee}.rating .btn{background:#f8bf36;color:#19395e}
.emoji-panel{border-color:#e6ebf1;border-radius:16px}
body.embed-mode{background:#fff}.embed-mode .brand-showcase{display:none}.embed-mode .chat-page{display:flex;min-height:0;height:100dvh;width:100%;padding:0;max-width:none}.embed-mode .chat-page:before{display:none}.embed-mode .chat-shell{width:100%;height:100dvh;max-height:none;border:0;border-radius:0;box-shadow:none}
@media(max-width:1000px){.chat-page{max-width:600px;display:flex;justify-content:center;min-height:0}.brand-showcase{display:none}.chat-shell{max-width:560px;height:min(850px,calc(100dvh - 44px));max-height:none}.showcase-photo{display:none}}
@media(max-width:600px){html,body{height:100%;overflow:hidden}.chat-page{width:100%;max-width:none;height:100dvh;padding:0;min-height:0;display:block}.chat-page:before{display:none}.chat-shell{max-width:none;width:100%;height:100dvh;border:0;border-radius:0;box-shadow:none}.chat-header{height:76px;flex-basis:76px;padding:11px 16px;gap:10px}.avatar{height:47px;width:47px;flex-basis:47px}.agent-heading b{font-size:16px}.status-line{font-size:11px}.welcome{padding:23px 20px 20px}.welcome-avatar{height:69px;width:69px;margin-bottom:12px}.welcome-avatar img{width:54px;height:54px}.welcome-card h1{font-size:25px}.welcome-card p{font-size:13px;max-width:315px}.welcome-card{margin-bottom:21px}.entry-form-card{border-radius:18px;padding:19px}.field input{font-size:16px}.welcome-bottom{font-size:10px}.messages{padding:18px 13px 23px}.msg{max-width:90%}.bubble{font-size:13px;padding:10px 13px}.composer{gap:3px;padding:9px 9px max(9px,env(safe-area-inset-bottom));min-height:64px}.composer textarea{flex:1 1 auto;font-size:16px;min-width:0;padding:10px 8px;background:#f6f8fb;border:1px solid #e7edf3}.composer-icon,.composer .attach{color:#4c7596}.send-btn{background:#f6bb31;color:#153b65}.help-menu{top:69px}}
@media(max-height:700px) and (min-width:601px){.chat-page{padding:14px}.chat-shell,.brand-showcase{height:calc(100dvh - 28px)}.showcase-copy{margin-top:25px}.showcase-copy h2{font-size:39px;margin:15px 0}.showcase-copy p{font-size:13px}.showcase-photo{margin-top:18px}.welcome{padding-top:16px}.welcome-avatar{width:58px;height:58px}.welcome-avatar img{width:46px;height:46px}.welcome-card h1{font-size:23px}.welcome-card{margin-bottom:14px}.entry-form-card{padding:15px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}