@font-face{font-family:'Jakarta';src:url('assets/fonts/jakarta.woff2') format('woff2');font-weight:200 800;font-display:swap;}@font-face{font-family:'Inter';src:url('assets/fonts/inter.woff2') format('woff2');font-weight:100 900;font-display:swap;}
*{margin:0;padding:0;box-sizing:border-box}
:root{
 --bg:#ffffff;--soft:#F5F7FB;--soft2:#EBF0F8;--ink:#0D1320;--text:#48515F;--muted:#7C8699;
 --line:#E7EBF2;--card:#ffffff;--cardln:#EAEEF5;
 --primary:#2B53E0;--primary-d:#1C3CB6;--primarysoft:#EEF2FE;
 --coral:#FF6B6B;--amber:#FBB03B;--teal:#13B5A6;--violet:#7C5CFF;--green:#16A87A;
 --grad:linear-gradient(90deg,#FF6B6B,#FBB03B,#13B5A6,#2B53E0,#7C5CFF);
 --shadow:0 18px 50px -22px rgba(20,32,68,.22);--shadow-sm:0 8px 24px -12px rgba(20,32,68,.16);
 --radius:22px;--maxw:1180px;
}
.dark{
 --bg:#080B14;--soft:#0C111E;--soft2:#0F1626;--ink:#F2F5FB;--text:#AEB7C8;--muted:#788299;--line:#1B2436;--card:#0F1626;--cardln:#212C42;
 --primary:#6E8CFF;--primary-d:#5572F0;--primarysoft:#141E38;
 --shadow:0 24px 60px -24px rgba(0,0,0,.7);--shadow-sm:0 10px 30px -16px rgba(0,0,0,.6);
}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);
 line-height:1.6;-webkit-font-smoothing:antialiased;transition:background .4s,color .4s;overflow-x:hidden}
h1,h2,h3,h4,.dsp{font-family:'Jakarta','Inter',sans-serif;color:var(--ink);letter-spacing:-.02em;line-height:1.08}
.t .l-vi{display:none}body.lang-vi .t .l-en{display:none}body.lang-vi .t .l-vi{display:inline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
section{padding:clamp(64px,9vw,116px) 0;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-family:'Jakarta';font-weight:700;font-size:13px;
 letter-spacing:.14em;text-transform:uppercase;color:var(--primary)}
.eyebrow::before{content:"";width:26px;height:3px;border-radius:3px;background:var(--grad)}
.sec-h{font-size:clamp(2rem,3.8vw,3.1rem);font-weight:800;margin:14px 0 0}
.sec-sub{font-size:clamp(1rem,1.4vw,1.18rem);color:var(--text);max-width:60ch;margin-top:16px}
.center{text-align:center}.center .eyebrow::before{display:none}.center .sec-sub{margin-left:auto;margin-right:auto}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:'Jakarta';font-weight:700;font-size:15px;
 padding:14px 26px;border-radius:50px;border:1px solid transparent;cursor:pointer;text-decoration:none;
 transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;white-space:nowrap}
.btn .ic{width:18px;height:18px}
.btn-pri{background:var(--primary);color:#fff;box-shadow:0 14px 30px -12px rgba(43,83,224,.6)}
.btn-pri:hover{transform:translateY(-2px);box-shadow:0 20px 40px -14px rgba(43,83,224,.7);background:var(--primary-d)}
.btn-gh{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-gh:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary)}
.btn-wa{background:#25D366;color:#fff}.btn-wa:hover{transform:translateY(-2px);background:#1eb858}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:.35s}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:18px}
.nav.scrolled{backdrop-filter:blur(18px);background:color-mix(in srgb,var(--bg) 78%,transparent);
 border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex:none}
.brand img{height:42px;width:auto;border-radius:11px;background:#fff;padding:3px;box-shadow:var(--shadow-sm)}
.brand b{font-family:'Jakarta';font-weight:800;color:var(--ink);font-size:16px;letter-spacing:-.02em;line-height:1.05;display:block}
.brand b span{color:var(--primary)}
.brand-tx{display:flex;flex-direction:column;gap:1px}
.brand-tx small{font-size:10px;font-weight:700;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.nav-links{display:flex;flex-wrap:nowrap;gap:2px;margin-left:6px}
.nav-links a{font-size:14px;font-weight:600;color:var(--text);text-decoration:none;padding:9px 11px;border-radius:10px;transition:.2s;white-space:nowrap}
.nav-links a:hover{color:var(--ink);background:var(--soft)}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.langsw{display:flex;background:var(--soft);border:1px solid var(--line);border-radius:50px;padding:3px;font-family:'Jakarta';font-weight:700;font-size:12.5px}
.langsw button{border:none;background:none;cursor:pointer;color:var(--muted);padding:5px 11px;border-radius:50px;transition:.2s}
.langsw button.on{background:var(--primary);color:#fff}
.icbtn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);
 display:grid;place-items:center;cursor:pointer;transition:.2s}.icbtn:hover{border-color:var(--primary);color:var(--primary)}
.icbtn .ic{width:19px;height:19px}
.burger{display:none}
.nav-cta{}
.nav-account{font-family:'Jakarta';font-weight:700;font-size:14px;color:var(--ink);text-decoration:none;white-space:nowrap;padding:9px 12px;border-radius:10px;transition:.2s}
.nav-account:hover{background:var(--soft);color:var(--primary)}
@media(max-width:1180px){.nav-links,.nav-cta,.nav-tools .nav-account{display:none}.burger{display:grid}}

/* mobile menu */
.mob{position:fixed;inset:0;z-index:120;background:var(--bg);transform:translateX(100%);transition:.4s;padding:26px;display:flex;flex-direction:column}
.mob.open{transform:translateX(0)}
.mob a{font-family:'Jakarta';font-weight:700;font-size:22px;color:var(--ink);text-decoration:none;padding:16px 0;border-bottom:1px solid var(--line)}
.mob a.btn{border-bottom:none;padding:14px 26px}.mob a.btn-pri{color:#fff}
.mob-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}

/* hero */
.hero{padding-top:140px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;z-index:-1;animation:float 14s ease-in-out infinite}
.b1{width:520px;height:520px;background:radial-gradient(circle,#7C5CFF,transparent 70%);top:-160px;right:-120px}
.b2{width:460px;height:460px;background:radial-gradient(circle,#13B5A6,transparent 70%);bottom:-180px;left:-140px;animation-delay:-6s}
.b3{width:360px;height:360px;background:radial-gradient(circle,#FF6B6B,transparent 70%);top:120px;left:40%;opacity:.32;animation-delay:-3s}
@keyframes float{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(-26px) translateX(16px)}}
.hero h1{font-size:clamp(2.8rem,6.2vw,5rem);font-weight:800;margin:18px 0 0}
.hero-sub{font-size:clamp(1.05rem,1.7vw,1.32rem);color:var(--text);max-width:46ch;margin-top:20px}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-pills{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.pill{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--text);
 background:var(--bg);border:1px solid var(--line);padding:8px 14px;border-radius:50px;box-shadow:var(--shadow-sm)}
.pill .ic{width:15px;height:15px;color:var(--primary)}
.hero-vis{position:relative}
.hero-card{border-radius:30px;overflow:hidden;border:1px solid var(--cardln);box-shadow:var(--shadow);transform:rotate(1.4deg);background:var(--card)}
.hero-card img{width:100%;display:block}
.chip{position:absolute;display:inline-flex;align-items:center;gap:7px;background:color-mix(in srgb,var(--card) 86%,transparent);
 backdrop-filter:blur(10px);border:1px solid var(--cardln);border-radius:14px;padding:10px 14px;font-family:'Jakarta';
 font-weight:700;font-size:13px;color:var(--ink);box-shadow:var(--shadow-sm);animation:float 7s ease-in-out infinite}
.chip .ic{width:17px;height:17px}
.chip.c1{top:-14px;left:-8px;color:var(--violet)}.chip.c1 .ic{color:var(--violet)}
.chip.c2{bottom:40px;right:20px;animation-delay:-2s;color:var(--teal)}.chip.c2 .ic{color:var(--teal)}
.chip.c3{bottom:-14px;left:24px;animation-delay:-4s;color:var(--coral)}.chip.c3 .ic{color:var(--coral)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:64px}
.stat{text-align:center;padding:8px}
.stat .n{font-family:'Jakarta';font-weight:800;font-size:clamp(1.8rem,3vw,2.6rem);color:var(--ink)}
.stat .n span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .l{font-size:13.5px;color:var(--muted);font-weight:600;margin-top:4px}

/* cards generic */
.card{background:var(--card);border:1px solid var(--cardln);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s}
.grid{display:grid;gap:22px}

/* why build */
.vs{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:44px}
.vs-card{border-radius:26px;padding:34px;border:1px solid var(--cardln);background:var(--card)}
.vs-buy{background:var(--soft);border-style:dashed}
.vs-build{position:relative;background:var(--card);border:none}
.vs-build::before{content:"";position:absolute;inset:0;border-radius:26px;padding:1.5px;background:var(--grad);
 -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.vs-tag{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;font-family:'Jakarta';font-weight:700;font-size:13px;
 padding:7px 14px;border-radius:50px;margin-bottom:18px}
.vs-buy .vs-tag{background:#fff;color:var(--muted);border:1px solid var(--line)}
.dark .vs-buy .vs-tag{background:var(--soft2)}
.vs-build .vs-tag{background:var(--primary);color:#fff}
.vs-card h3{font-size:1.5rem;font-weight:800;margin-bottom:18px}
.vs-list{list-style:none;display:flex;flex-direction:column;gap:13px}
.vs-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text);font-weight:500}
.vs-list .ic{width:22px;height:22px;flex:none;padding:3px;border-radius:7px}
.vs-buy .vs-list .ic{color:var(--muted);background:var(--soft2)}
.vs-build .vs-list .ic{color:#fff;background:var(--green)}
.vs-note{margin-top:44px;text-align:center;font-size:clamp(1.1rem,1.7vw,1.4rem);font-family:'Jakarta';font-weight:600;
 color:var(--ink);max-width:60ch;margin-left:auto;margin-right:auto;line-height:1.45}

/* benefits */
.ben-grid{grid-template-columns:repeat(5,1fr);margin-top:46px}
.ben{padding:26px 20px;text-align:left}
.ben:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.ben-ic{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;margin-bottom:16px;color:#fff}
.ben-ic .ic{width:25px;height:25px}
.ben h4{font-size:16px;font-weight:700}
.ben p{font-size:13.5px;color:var(--muted);margin-top:6px}
.credband{margin-top:46px;border-radius:26px;padding:40px;background:linear-gradient(120deg,var(--primary),var(--violet));color:#fff;
 display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center}
.credband .n{font-family:'Jakarta';font-weight:800;font-size:2.4rem}
.credband .l{opacity:.9;font-size:14px;font-weight:500;margin-top:4px;max-width:24ch;margin-inline:auto}

/* products */
.prod-grid{grid-template-columns:1fr 1fr;margin-top:46px}
.prod{overflow:hidden;display:flex;flex-direction:column}
.prod:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.prod-img{position:relative;aspect-ratio:16/11;overflow:hidden;background:var(--soft)}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.prod:hover .prod-img img{transform:scale(1.04)}
.prod-price{position:absolute;top:16px;right:16px;background:var(--card);border:1px solid var(--cardln);
 border-radius:14px;padding:8px 14px;font-family:'Jakarta';font-weight:800;color:var(--ink);box-shadow:var(--shadow-sm)}
.prod-price small{font-weight:600;color:var(--muted);font-size:11px;display:block;letter-spacing:.08em}
.prod-body{padding:28px;display:flex;flex-direction:column;flex:1}
.prod-tag{font-family:'Jakarta';font-weight:700;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--primary)}
.prod-body h3{font-size:1.5rem;font-weight:800;margin:8px 0 10px}
.prod-body p{font-size:15px;color:var(--text)}
.prod-feat{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 24px}
.prod-feat span{font-size:12.5px;font-weight:600;color:var(--text);background:var(--soft);border:1px solid var(--line);padding:6px 12px;border-radius:50px}
.prod .btn{margin-top:auto;justify-content:center}

/* workshops */
.ws-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:44px;align-items:start;margin-top:46px}
.ws-list{list-style:none;display:flex;flex-direction:column;gap:14px;margin-top:8px}
.ws-list li{display:flex;gap:13px;align-items:flex-start;font-size:15.5px;color:var(--text);font-weight:500}
.ws-list .ic{width:24px;height:24px;flex:none;color:#fff;background:var(--primary);border-radius:8px;padding:4px}
.tutor{margin-top:26px;display:flex;gap:16px;align-items:center;padding:18px;border-radius:18px;background:var(--soft);border:1px solid var(--line)}
.tutor img{width:64px;height:64px;border-radius:14px;object-fit:cover;flex:none}
.tutor b{font-family:'Jakarta';font-weight:800;color:var(--ink);font-size:16px}
.tutor .role{font-size:13px;color:var(--muted)}
.tutor .badges{display:flex;gap:6px;flex-wrap:wrap;margin-top:7px}
.tutor .badges span{font-size:10.5px;font-weight:700;background:var(--card);border:1px solid var(--line);padding:3px 8px;border-radius:50px;color:var(--text)}
.gal{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.gal img{width:100%;height:100%;object-fit:cover;border-radius:18px;border:1px solid var(--cardln)}
.gal .big{grid-column:1/-1;aspect-ratio:2/1}
.gal .sm{aspect-ratio:1/1}

/* form */
.form{margin-top:30px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}
.field label{font-family:'Jakarta';font-weight:600;font-size:13px;color:var(--ink)}
.field input,.field select,.field textarea{font-family:'Inter';font-size:15px;padding:13px 15px;border-radius:13px;
 border:1px solid var(--line);background:var(--bg);color:var(--ink);transition:.2s;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primarysoft)}
.field textarea{resize:vertical;min-height:90px}

/* trust / testimonials */
.tg{grid-template-columns:repeat(3,1fr);margin-top:44px}
.quote{padding:28px}
.quote .stars{display:flex;gap:3px;color:var(--amber);margin-bottom:14px}.quote .stars .ic{width:17px;height:17px;fill:currentColor}
.quote p{font-size:15px;color:var(--ink);font-style:italic}
.quote .who{display:flex;align-items:center;gap:11px;margin-top:18px}
.quote .av{width:42px;height:42px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;font-family:'Jakarta';font-weight:800}
.quote .who b{font-family:'Jakarta';font-size:14px;color:var(--ink);display:block}
.quote .who small{color:var(--muted);font-size:12.5px}
.ph{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:var(--soft);border:1px dashed var(--line);padding:3px 9px;border-radius:50px;display:inline-block;margin-bottom:12px}

/* faq */
.faq{max-width:820px;margin:40px auto 0}
.qa{border:1px solid var(--cardln);border-radius:16px;margin-bottom:12px;overflow:hidden;background:var(--card)}
.qa-q{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;cursor:pointer;
 font-family:'Jakarta';font-weight:700;font-size:16.5px;color:var(--ink)}
.qa-q .ic{width:22px;height:22px;color:var(--primary);transition:.3s;flex:none}
.qa.open .qa-q .ic{transform:rotate(45deg)}
.qa-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--text)}
.qa-a div{padding:0 24px 22px;font-size:15px}

/* contact */
.ct-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;margin-top:46px;align-items:start}
.ct-method{display:flex;gap:14px;align-items:center;padding:16px;border-radius:16px;border:1px solid var(--cardln);background:var(--card);margin-bottom:13px;text-decoration:none;transition:.25s}
.ct-method:hover{transform:translateX(4px);border-color:var(--primary)}
.ct-ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;color:#fff;flex:none}
.ct-method b{font-family:'Jakarta';font-size:15px;color:var(--ink);display:block}
.ct-method small{color:var(--muted);font-size:13px}

/* footer */
footer{background:var(--soft);border-top:1px solid var(--line);padding:60px 0 30px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.foot-grid h5{font-family:'Jakarta';font-weight:700;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);margin-bottom:16px}
.foot-grid a{display:block;color:var(--muted);text-decoration:none;font-size:14px;padding:5px 0;transition:.2s}
.foot-grid a:hover{color:var(--primary)}
.foot-brand p{font-size:14px;color:var(--text);margin:16px 0;max-width:34ch}
.foot-soc{display:flex;gap:10px}
.foot-soc a{width:40px;height:40px;border-radius:11px;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink);background:var(--bg)}
.foot-soc a:hover{color:var(--primary);border-color:var(--primary)}
.foot-bot{border-top:1px solid var(--line);margin-top:40px;padding-top:24px;text-align:center;color:var(--muted);font-size:13px}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

@media(max-width:980px){
 .hero-grid{grid-template-columns:1fr;gap:40px}.hero{padding-top:120px}
 .vs,.prod-grid,.ws-grid,.ct-grid{grid-template-columns:1fr}
 .ben-grid{grid-template-columns:repeat(2,1fr)}
 .stats{grid-template-columns:repeat(2,1fr);gap:28px}
 .credband{grid-template-columns:1fr;gap:26px}
 .tg{grid-template-columns:1fr}
 .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
 .form{grid-template-columns:1fr}
}
@media(max-width:560px){
 .ben-grid{grid-template-columns:1fr 1fr}.foot-grid{grid-template-columns:1fr}
 .vs-card{padding:26px}
 .brand-tx{display:none}
 .chip{display:none}
 .nav-in{gap:10px}.langsw button{padding:5px 9px}
 .hero h1{font-size:2.7rem}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important}.reveal{transition:none;opacity:1;transform:none}}

/* ============================================================
   CHAT WIDGET (shared by student + admin portals)
   ============================================================ */
.chat{display:flex;flex-direction:column;height:460px;border:1px solid var(--cardln);border-radius:18px;
 background:var(--card);overflow:hidden}
.chat-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 16px;
 border-bottom:1px solid var(--line);background:var(--soft)}
.chat-title{font-family:'Jakarta';font-weight:800;color:var(--ink);font-size:14.5px}
.chat-wipe{font-family:'Jakarta';font-weight:700;font-size:12px;color:var(--coral);background:none;border:none;cursor:pointer;padding:4px 6px;border-radius:8px}
.chat-wipe:hover{background:color-mix(in srgb,var(--coral) 12%,transparent)}
.chat-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;background:var(--bg)}
.chat-empty{margin:auto;color:var(--muted);font-size:14px;text-align:center}
.msg{max-width:78%;align-self:flex-start;display:flex;flex-direction:column;gap:3px}
.msg.me{align-self:flex-end;align-items:flex-end}
.msg-who{font-size:11px;font-weight:700;color:var(--muted);padding-left:6px}
.bubble{background:var(--soft2);color:var(--ink);padding:10px 13px;border-radius:16px;border-top-left-radius:5px;
 font-size:14.5px;line-height:1.45;word-break:break-word;white-space:pre-wrap}
.msg.me .bubble{background:var(--primary);color:#fff;border-radius:16px;border-top-right-radius:5px}
.msg-img{display:block;margin:-2px 0}
.msg-img img{max-width:240px;max-height:240px;border-radius:12px;display:block}
.msg-img+.msg-text{display:block;margin-top:8px}
.msg-meta{font-size:11px;color:var(--muted);padding:0 6px;display:flex;gap:8px;align-items:center}
.msg-act{background:none;border:none;cursor:pointer;color:var(--muted);font-weight:700;font-size:11px;padding:0}
.msg-act:hover{color:var(--primary)}
.msg.me .msg-meta{justify-content:flex-end}
.edit-box{display:flex;gap:6px;margin-top:6px;width:100%}
.edit-in{flex:1;font-family:'Inter';font-size:14px;padding:8px 10px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.btn-mini{font-family:'Jakarta';font-weight:700;font-size:12px;border:none;border-radius:9px;padding:6px 11px;cursor:pointer}
.btn-mini.save{background:var(--primary);color:#fff}.btn-mini.cancel{background:var(--soft2);color:var(--ink)}
.chat-bar{display:flex;align-items:center;gap:9px;padding:11px 12px;border-top:1px solid var(--line);background:var(--card)}
.chat-bar.uploading{opacity:.6;pointer-events:none}
.chat-img-btn{width:40px;height:40px;flex:none;border-radius:11px;border:1px solid var(--line);display:grid;place-items:center;cursor:pointer;color:var(--ink)}
.chat-img-btn:hover{border-color:var(--primary);color:var(--primary)}
.chat-img-btn svg{width:20px;height:20px}
.chat-input{flex:1;font-family:'Inter';font-size:14.5px;padding:11px 15px;border-radius:50px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.chat-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primarysoft)}
.chat-send{width:42px;height:42px;flex:none;border-radius:50%;border:none;background:var(--primary);color:#fff;display:grid;place-items:center;cursor:pointer}
.chat-send:hover{background:var(--primary-d)}
.chat-send svg{width:18px;height:18px}

/* ============================================================
   ADMIN PORTAL
   ============================================================ */
.adm-shell{max-width:1080px;margin:0 auto;padding:24px}
.adm-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px;flex-wrap:wrap}
.adm-top h1{font-family:'Jakarta';font-weight:800;font-size:1.5rem;color:var(--ink)}
.adm-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}
.adm-tab{font-family:'Jakarta';font-weight:700;font-size:14px;padding:9px 16px;border-radius:50px;border:1px solid var(--line);background:var(--card);color:var(--text);cursor:pointer}
.adm-tab.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.adm-panel{display:none}.adm-panel.on{display:block}
.adm-table{width:100%;border-collapse:collapse;font-size:14px;background:var(--card);border:1px solid var(--cardln);border-radius:14px;overflow:hidden}
.adm-table th,.adm-table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);color:var(--ink);vertical-align:top}
.adm-table th{font-family:'Jakarta';font-weight:700;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);background:var(--soft)}
.adm-table tr:last-child td{border-bottom:none}
.adm-table .muted{color:var(--muted);font-size:13px}
.adm-wrap{overflow-x:auto}
.adm-badge{font-size:11px;font-weight:700;padding:4px 10px;border-radius:50px;text-transform:capitalize}
.adm-badge.new,.adm-badge.pending{background:#FFF4E0;color:#9A6800}
.adm-badge.confirmed,.adm-badge.paid{background:#E8F6F0;color:#0F7A57}
.adm-input{font-family:'Inter';font-size:13px;padding:7px 9px;border-radius:9px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.adm-threads{display:grid;grid-template-columns:300px 1fr;gap:18px}
.adm-thread-list{display:flex;flex-direction:column;gap:8px;max-height:540px;overflow-y:auto}
.adm-thread{text-align:left;border:1px solid var(--line);background:var(--card);border-radius:12px;padding:12px 14px;cursor:pointer}
.adm-thread:hover{border-color:var(--primary)}
.adm-thread.on{border-color:var(--primary);background:var(--primarysoft)}
.adm-thread b{font-family:'Jakarta';font-size:14px;color:var(--ink);display:block}
.adm-thread small{color:var(--muted);font-size:12.5px;display:block;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media(max-width:760px){.adm-threads{grid-template-columns:1fr}}

/* ============================================================
   HOW IT WORKS — 2 simple steps
   ============================================================ */
.how-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:46px;align-items:start}
.how-step{position:relative;padding:34px;border-radius:26px;border:1px solid var(--cardln);background:var(--card)}
.how-step2{border:none}
.how-step2::before{content:"";position:absolute;inset:0;border-radius:26px;padding:1.5px;background:var(--grad);
 -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.how-head{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.how-num{flex:none;width:52px;height:52px;border-radius:16px;background:var(--grad);color:#fff;
 display:grid;place-items:center;font-family:'Jakarta';font-weight:800;font-size:24px;box-shadow:var(--shadow-sm)}
.how-step h3{font-size:1.45rem;font-weight:800;color:var(--ink)}
.how-step>p{font-size:15.5px;color:var(--text);line-height:1.55}
.how-modes{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.how-mode{border:1px solid var(--line);border-radius:16px;padding:16px 16px 18px;background:var(--soft)}
.how-mode .mic{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:#fff;margin-bottom:11px}
.how-mode .mic .ic{width:20px;height:20px}
.how-mode b{font-family:'Jakarta';font-weight:800;color:var(--ink);font-size:15px;display:block;margin-bottom:5px}
.mode-loc{display:inline-block;font-family:'Jakarta';font-weight:700;font-size:11px;letter-spacing:.02em;
 padding:3px 9px;border-radius:50px;margin-bottom:9px;background:var(--soft2);color:var(--muted);border:1px solid var(--line)}
.mode-loc.ok{background:color-mix(in srgb,var(--green) 14%,var(--card));color:var(--green);border-color:color-mix(in srgb,var(--green) 30%,transparent)}
.how-mode p{font-size:13px;color:var(--muted);line-height:1.5}
.how-step .btn{margin-top:22px}
.how-incl{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-family:'Jakarta';font-weight:700;
 font-size:13.5px;color:var(--green);background:color-mix(in srgb,var(--green) 12%,var(--card));
 border:1px solid color-mix(in srgb,var(--green) 30%,transparent);padding:8px 15px;border-radius:50px}
.how-incl .ic{width:16px;height:16px}
@media(max-width:860px){.how-grid,.how-modes{grid-template-columns:1fr}}

/* ============================================================
   BOOKING MODAL
   ============================================================ */
.modal{display:none;position:fixed;inset:0;z-index:200}
.modal.open{display:block}
.modal-bg{position:absolute;inset:0;background:rgba(8,11,20,.55);backdrop-filter:blur(4px);animation:bk-fade .25s ease}
.modal-card{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:calc(100% - 36px);max-width:460px;
 max-height:90vh;overflow:auto;background:var(--card);border:1px solid var(--cardln);border-radius:24px;
 box-shadow:var(--shadow);padding:34px 30px;animation:bk-pop .3s cubic-bezier(.2,.8,.3,1)}
@keyframes bk-fade{from{opacity:0}to{opacity:1}}
@keyframes bk-pop{from{opacity:0;transform:translate(-50%,-46%) scale(.96)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
.modal-x{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
 background:var(--bg);color:var(--ink);display:grid;place-items:center;cursor:pointer;transition:.2s}
.modal-x:hover{border-color:var(--primary);color:var(--primary)}
.modal-card h3{font-family:'Jakarta';font-weight:800;font-size:1.5rem;color:var(--ink);letter-spacing:-.02em;padding-right:30px}
.bk-sub{color:var(--text);font-size:14.5px;margin-top:8px;line-height:1.5}
.aform2{display:grid;gap:14px;margin-top:22px}
.bk-msg{font-size:13.5px;padding:0}
.bk-msg.err{padding:11px 14px;border-radius:12px;background:#FDECEC;color:#B3261E;border:1px solid #F5C6C6}
.book-success{text-align:center;padding:10px 4px 4px}
.book-success .ok-ic{width:64px;height:64px;border-radius:50%;margin:6px auto 18px;display:grid;place-items:center;
 color:#fff;background:var(--green);box-shadow:0 12px 30px -10px rgba(22,168,122,.6)}
.book-success .ok-ic .ic{width:30px;height:30px}
.book-success p{margin:10px auto 22px;max-width:34ch}
.hp{position:absolute!important;left:-9999px;top:-9999px;width:1px;height:1px;overflow:hidden;opacity:0}
.hide{display:none!important}

/* ============================================================
   ROBOT-BUILD HERO  (self-assembling robot + blueprint stage)
   ============================================================ */
.hero h1 .grad-text{display:inline-block}
.hero-eng{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-family:'Jakarta';font-weight:700;
 font-size:14px;color:var(--ink);background:var(--card);border:1px solid var(--cardln);
 padding:9px 16px 9px 12px;border-radius:50px;box-shadow:var(--shadow-sm)}
.hero-eng .dot{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(22,168,122,.5);animation:rb-live 1.8s ease-out infinite}
@keyframes rb-live{0%{box-shadow:0 0 0 0 rgba(22,168,122,.55)}70%{box-shadow:0 0 0 9px rgba(22,168,122,0)}100%{box-shadow:0 0 0 0 rgba(22,168,122,0)}}

/* the stage that holds the robot */
.rb-stage{position:relative;aspect-ratio:1/1;width:100%;max-width:520px;margin-inline:auto;
 border-radius:34px;overflow:visible;background:
   radial-gradient(120% 120% at 50% 0%,color-mix(in srgb,var(--primary) 12%,var(--card)),var(--card));
 border:1px solid var(--cardln);box-shadow:var(--shadow)}
/* blueprint grid */
.rb-stage::before{content:"";position:absolute;inset:0;opacity:.5;
 background-image:linear-gradient(color-mix(in srgb,var(--primary) 16%,transparent) 1px,transparent 1px),
   linear-gradient(90deg,color-mix(in srgb,var(--primary) 16%,transparent) 1px,transparent 1px);
 background-size:30px 30px;-webkit-mask:radial-gradient(100% 100% at 50% 40%,#000 55%,transparent 88%);
 mask:radial-gradient(100% 100% at 50% 40%,#000 55%,transparent 88%)}
.rb-svg{position:absolute;inset:0;width:100%;height:100%;display:block}
.rb-svg *{transform-box:fill-box;transform-origin:center}
/* robot material palette (shell follows light/dark theme) */
.rb-shell{fill:var(--card);stroke:var(--cardln);stroke-width:2.5}
.rb-shell2{fill:var(--soft);stroke:var(--cardln);stroke-width:2}
.rb-screen{fill:#0E1525}
.rb-eye{fill:#46E3CF}
.rb-mouth{fill:#2B53E0;opacity:.85}
.rb-cpu{fill:#0E1525;stroke:#2B53E0;stroke-width:1.6}
.rb-cpuline{stroke:#46E3CF;stroke-width:1.6;fill:none;opacity:.8}
.rb-track{fill:#243049}
.rb-trace{stroke:#2B53E0;stroke-width:2.2;fill:none;opacity:.45}
.rb-stalk{stroke:var(--cardln);stroke-width:4;stroke-linecap:round}
.rb-bolt{fill:var(--soft2);stroke:var(--muted);stroke-width:1.4}
.rb-arm-l,.rb-arm-r{transform-origin:center top}

/* assembly entrance — each part flies/fades into place, staggered */
@keyframes rb-assemble{0%{opacity:0;transform:translateY(22px) scale(.86)}60%{opacity:1}100%{opacity:1;transform:none}}
.rb-part{opacity:0;animation:rb-assemble .7s cubic-bezier(.2,.8,.3,1) forwards}
.rb-d1{animation-delay:.15s}.rb-d2{animation-delay:.35s}.rb-d3{animation-delay:.55s}
.rb-d4{animation-delay:.75s}.rb-d5{animation-delay:.95s}.rb-d6{animation-delay:1.15s}
/* whole robot gentle bob after assembly */
.rb-robot{animation:rb-bob 5.5s ease-in-out 1.3s infinite}
@keyframes rb-bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
/* eyes blink */
.rb-eye{animation:rb-blink 4.2s infinite}
@keyframes rb-blink{0%,92%,100%{transform:scaleY(1)}95%{transform:scaleY(.08)}}
/* antenna led pulse */
.rb-antenna-led{animation:rb-glow 1.6s ease-in-out infinite}
@keyframes rb-glow{0%,100%{opacity:.55;r:6}50%{opacity:1;r:8}}
/* status leds blink staggered */
.rb-led{animation:rb-ledb 1.4s steps(1) infinite}
.rb-led.l2{animation-delay:.45s}.rb-led.l3{animation-delay:.9s}
@keyframes rb-ledb{0%,100%{opacity:1}50%{opacity:.25}}
/* progress bar fill (the "building" feel) */
.rb-fill{transform:scaleX(.06);transform-origin:left center;animation:rb-build 3.4s ease-in-out 1.3s infinite}
@keyframes rb-build{0%{transform:scaleX(.06)}55%{transform:scaleX(1)}80%{transform:scaleX(1)}100%{transform:scaleX(.06)}}
/* current flowing along circuit traces */
.rb-trace{stroke-dasharray:6 10;animation:rb-flow 1.4s linear infinite}
@keyframes rb-flow{to{stroke-dashoffset:-32}}
/* rotating corner bolts */
.rb-bolt{animation:rb-spin 6s linear infinite}
@keyframes rb-spin{to{transform:rotate(360deg)}}
/* arms wave */
.rb-arm-l{animation:rb-wl 4s ease-in-out 1.4s infinite}
.rb-arm-r{animation:rb-wr 4s ease-in-out 1.4s infinite}
@keyframes rb-wl{0%,100%{transform:rotate(0)}50%{transform:rotate(-7deg)}}
@keyframes rb-wr{0%,100%{transform:rotate(0)}50%{transform:rotate(7deg)}}
/* soldering spark near a joint */
.rb-spark{animation:rb-sp 2.6s ease-out 1.6s infinite}
@keyframes rb-sp{0%,70%,100%{opacity:0;transform:scale(.4)}78%{opacity:1;transform:scale(1.1)}86%{opacity:.4}}

/* floating component parts around the robot */
.rb-parts{position:absolute;inset:0;pointer-events:none}
.rb-tag{position:absolute;display:inline-flex;align-items:center;gap:7px;
 background:color-mix(in srgb,var(--card) 88%,transparent);backdrop-filter:blur(8px);
 border:1px solid var(--cardln);border-radius:13px;padding:8px 13px;font-family:'Jakarta';
 font-weight:700;font-size:12.5px;color:var(--ink);box-shadow:var(--shadow-sm);
 animation:float 7s ease-in-out infinite;white-space:nowrap}
.rb-tag .ic{width:16px;height:16px}
.rb-tag.t1{top:5%;left:0;color:var(--violet)}.rb-tag.t1 .ic{color:var(--violet)}
.rb-tag.t2{top:31%;right:0;animation-delay:-2s;color:var(--teal)}.rb-tag.t2 .ic{color:var(--teal)}
.rb-tag.t3{bottom:26%;left:0;animation-delay:-4s;color:var(--coral)}.rb-tag.t3 .ic{color:var(--coral)}
.rb-tag.t4{bottom:6%;right:0;animation-delay:-1s;color:var(--amber)}.rb-tag.t4 .ic{color:var(--amber)}
/* build-status chip */
.rb-status{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;align-items:center;gap:9px;
 background:color-mix(in srgb,var(--card) 90%,transparent);backdrop-filter:blur(8px);border:1px solid var(--cardln);
 border-radius:50px;padding:8px 16px;box-shadow:var(--shadow-sm);font-family:'Jakarta';font-weight:700;font-size:12.5px;color:var(--ink)}
.rb-status .bar{width:74px;height:6px;border-radius:50px;background:var(--soft2);overflow:hidden}
.rb-status .bar i{display:block;height:100%;border-radius:50px;background:var(--grad);transform-origin:left;
 transform:scaleX(.06);animation:rb-build 3.4s ease-in-out 1.3s infinite}

@media(max-width:560px){
 .rb-tag.t1,.rb-tag.t3{left:0}.rb-tag.t2,.rb-tag.t4{right:0}
 .rb-tag{font-size:11px;padding:6px 10px}
}