/* AI Agents platform - design system. Light/dark automatic; Telegram Mini App overrides the colours at runtime. */
:root{
  --bg:#f4f5f9;--card:#fff;--ink:#0f172a;--mute:#64748b;--line:#e2e8f0;
  --brand:#4f46e5;--brand-2:#06b6d4;--btn-ink:#fff;
  --ok:#059669;--warn:#d97706;--bad:#dc2626;--admin:#f59e0b;--side:#fff;--side-ink:#0f172a;
  --r:14px;--shadow:0 1px 2px rgba(15,23,42,.05),0 4px 16px rgba(15,23,42,.05);
}
@media (prefers-color-scheme:dark){:root{--bg:#0b1020;--card:#121a2f;--ink:#e8ecf6;--mute:#94a3b8;--line:#243049;--brand:#7c83ff;--side:#0f1629;--side-ink:#e8ecf6;--shadow:none}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Khmer","Noto Sans",sans-serif}
a{color:var(--brand)}
img{max-width:100%}
h1{font-size:28px;line-height:1.2;margin:0 0 6px;letter-spacing:-.02em}
h2{font-size:19px;line-height:1.3;margin:0 0 6px}
h3{font-size:16px;margin:0 0 4px}
p{margin:6px 0}
.mute{color:var(--mute)}.small{font-size:13px}
code{background:var(--bg);padding:2px 6px;border-radius:6px;font-size:14px;word-break:break-all}

/* ---------- buttons, forms ---------- */
button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:10px 18px;border:0;border-radius:10px;background:var(--brand);color:var(--btn-ink);font:inherit;font-weight:600;cursor:pointer;text-decoration:none;margin-top:10px;line-height:1.3}
button:hover,.btn:hover{filter:brightness(1.06)}
button.sec,.btn.sec{background:transparent;color:var(--brand);border:1px solid var(--brand)}
button.link{background:none;color:inherit;padding:0;margin:0;min-height:0;font-weight:400;border:0;display:inline}
.btn.lg{min-height:52px;padding:12px 26px;font-size:17px;border-radius:12px}
.btn.ghost{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn.white{background:#fff;color:#312e81}
label{display:block;font-weight:600;margin:14px 0 4px}
input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit;font-size:16px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand);outline-offset:1px}
textarea{min-height:80px}
input[type=checkbox]{width:18px;height:18px;vertical-align:-3px;margin-right:6px}
.inline{display:inline}.inline button{margin:0;min-height:36px;padding:6px 12px}

/* ---------- cards, badges, tables ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:16px;box-shadow:var(--shadow)}
.row{display:flex;gap:14px;flex-wrap:wrap}.row>*{flex:1;min-width:200px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.grid>.card{margin:0}
.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:13px;border:1px solid var(--line);vertical-align:middle}
.badge.ok{color:var(--ok);border-color:var(--ok)}.badge.warn{color:var(--warn);border-color:var(--warn)}.badge.bad{color:var(--bad);border-color:var(--bad)}
.dot{display:inline-block;min-width:18px;padding:0 5px;border-radius:99px;background:#e5484d;color:#fff;font-size:12px;line-height:18px;text-align:center;font-weight:700}
.flash{padding:12px 14px;border-radius:10px;margin-bottom:16px;border:1px solid;background:var(--card)}
.flash.ok{color:var(--ok);border-color:var(--ok)}.flash.err{color:var(--bad);border-color:var(--bad)}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:9px 6px;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--mute);font-weight:600;font-size:13px}
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.step{display:flex;gap:14px}.num{flex:none;width:34px;height:34px;border-radius:50%;background:var(--line);display:grid;place-items:center;font-weight:700}
.step.done .num{background:var(--ok);color:#fff}.step .body{flex:1;min-width:0}
.stat{font-size:30px;font-weight:700;letter-spacing:-.02em}.statl{color:var(--mute);font-size:13px}
.tile{display:block;text-decoration:none;color:inherit}
.tile:hover{border-color:var(--brand)}
.agent-ico{font-size:34px;line-height:1;margin-bottom:6px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.chip{padding:3px 10px;border-radius:99px;background:var(--bg);border:1px solid var(--line);font-size:13px;color:var(--mute)}
.subtabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;margin-bottom:14px;-webkit-overflow-scrolling:touch}
.subtabs a{white-space:nowrap;padding:8px 14px;border-radius:99px;border:1px solid var(--line);background:var(--card);color:var(--ink);text-decoration:none;font-size:14px}
.subtabs a.on{background:var(--brand);color:var(--btn-ink);border-color:var(--brand)}

/* ---------- app shell: sidebar on desktop, bottom tab bar on phones ---------- */
.shell{display:grid;grid-template-columns:248px 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:18px 14px;background:var(--side);border-right:1px solid var(--line);color:var(--side-ink)}
.logo{display:inline-block;font-weight:800;font-size:18px;color:inherit;text-decoration:none;letter-spacing:-.02em}
.pill{display:inline-block;margin:8px 0 4px;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:700;text-decoration:none;text-transform:uppercase;letter-spacing:.04em}
.pill.admin{background:var(--admin);color:#1f1300}.pill.user{background:#d1fae5;color:#065f46}
.sidenav{display:flex;flex-direction:column;gap:2px;margin-top:14px;flex:1;overflow-y:auto}
.sidenav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:inherit;text-decoration:none;font-weight:500}
.sidenav a:hover{background:var(--bg)}
.sidenav a.on{background:var(--brand);color:var(--btn-ink)}
.ico{font-size:18px;width:24px;text-align:center}
.side-foot{border-top:1px solid var(--line);padding-top:12px;font-size:14px;display:flex;flex-direction:column;gap:8px}
.side-foot a,.side-foot .link{color:var(--mute)}
.who{font-weight:600;word-break:break-all}
.main{min-width:0}
.topbar{display:none;align-items:center;justify-content:space-between;padding:10px 14px}
.content{max-width:960px;margin:0 auto;padding:26px 24px 40px}
.content.narrow{max-width:460px;padding-top:30px}
.adminbar{background:var(--admin);color:#1f1300;padding:8px 24px;font-size:14px;font-weight:500}
.adminbar a{color:#1f1300;font-weight:700}
body.admin .side{background:#0f172a;color:#e2e8f0;border-right-color:#0f172a}
body.admin .side-foot{border-color:#243049}
body.admin .sidenav a:hover{background:#1e293b}
body.admin .sidenav a.on{background:var(--admin);color:#1f1300}
body.admin{--brand:#4f46e5}
.plain-head{text-align:center;padding:26px 0 0}
.tabbar{display:none}

@media (max-width:900px){
  .shell{display:block}
  .side{display:none}
  .topbar{display:flex}
  .content{padding:10px 14px 24px}
  .adminbar{padding:8px 14px;font-size:13px}
  body.app{padding-bottom:calc(66px + env(safe-area-inset-bottom))}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--card);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
  .tabbar a{flex:1;text-align:center;padding:7px 2px 6px;color:var(--mute);text-decoration:none;font-size:11px;line-height:1.2;position:relative}
  .tabbar a .ico{display:block;width:auto;font-size:21px;line-height:1.25}
  .tabbar a.on{color:var(--brand);font-weight:700}
  body.admin .tabbar a.on{color:#b45309}
  h1{font-size:23px}
  .card{padding:14px}
  .row>*{min-width:100%}
  .step{gap:10px}
}

/* ---------- Telegram Mini App ---------- */
body.tma .topbar{padding:8px 14px 0}
body.tma .content{padding-top:6px}
body.tma .logo{font-size:16px}

/* ---------- public / marketing pages ---------- */
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.pub-head{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--card) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.pub-head .wrap{display:flex;align-items:center;gap:20px;min-height:64px}
.pub-nav{display:flex;gap:20px;flex:1}.pub-nav a{color:var(--ink);text-decoration:none;font-weight:500}
.pub-cta{display:flex;gap:10px;align-items:center}.pub-cta .btn{margin:0;min-height:40px;padding:8px 16px}
main.pub{display:block}
.hero{background:linear-gradient(135deg,#4338ca 0%,#4f46e5 45%,#0891b2 100%);color:#fff;padding:72px 0 80px;text-align:center}
.hero h1{font-size:46px;max-width:820px;margin:0 auto 14px;color:#fff}
.hero p.lead{font-size:19px;max-width:700px;margin:0 auto 26px;color:rgba(255,255,255,.88)}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.hero .cta .btn{margin:0}
.hero .chips{justify-content:center;margin-top:26px}.hero .chip{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.3);color:#fff}
.section{padding:56px 0}
.section.alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section h2.title{font-size:30px;text-align:center;margin-bottom:8px;letter-spacing:-.02em}
.section p.sub{text-align:center;color:var(--mute);max-width:640px;margin:0 auto 30px}
.feature .ico{display:block;width:auto;text-align:left;font-size:30px;margin-bottom:8px}
.steps3{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));counter-reset:s}
.steps3 .card{position:relative;padding-top:26px}
.steps3 .card:before{counter-increment:s;content:counter(s);position:absolute;top:-16px;left:18px;width:32px;height:32px;border-radius:50%;background:var(--brand);color:var(--btn-ink);display:grid;place-items:center;font-weight:700}
.price{font-size:34px;font-weight:800;letter-spacing:-.02em}
.checklist{list-style:none;padding:0;margin:12px 0}.checklist li{padding:4px 0 4px 26px;position:relative}.checklist li:before{content:"\2713";position:absolute;left:0;color:var(--ok);font-weight:700}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;list-style:none}.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";float:right;color:var(--mute);font-size:20px;line-height:1}.faq details[open] summary:after{content:"\2212"}
.faq p{color:var(--mute);margin-top:8px}
.cta-band{background:linear-gradient(135deg,#4338ca,#0891b2);color:#fff;text-align:center;padding:56px 20px}
.cta-band h2{font-size:30px;color:#fff}.cta-band p{color:rgba(255,255,255,.88)}
.crumbs{font-size:14px;color:var(--mute);margin:18px 0 0}.crumbs a{color:var(--mute)}
.pub-foot{padding:40px 0 30px;border-top:1px solid var(--line);margin-top:0}
.pub-foot .cols{display:grid;gap:24px;grid-template-columns:2fr 1fr 1fr}
.pub-foot .cols div a{display:block;color:var(--mute);text-decoration:none;margin-top:6px}
.pub-foot .cols strong{display:block}
@media (max-width:760px){
  .pub-nav{display:none}.pub-head .wrap{justify-content:space-between}
  .hero{padding:44px 0 52px}.hero h1{font-size:31px}.hero p.lead{font-size:17px}
  .section{padding:38px 0}.section h2.title{font-size:25px}
  .pub-foot .cols{grid-template-columns:1fr}
}

/* ---------- support chat ---------- */
.chatbox{padding:0;overflow:hidden}
.msgs{height:min(55vh,460px);overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:8px}
.bubble{max-width:82%;padding:8px 12px;border-radius:16px;word-wrap:break-word;overflow-wrap:anywhere;white-space:pre-wrap}
.bubble .t{display:block;font-size:11px;opacity:.65;margin-top:2px}
.bubble.me{align-self:flex-end;background:var(--brand);color:var(--btn-ink);border-bottom-right-radius:4px}
.bubble.them{align-self:flex-start;background:var(--bg);border:1px solid var(--line);border-bottom-left-radius:4px}
.sendbar{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line);align-items:flex-end}
.sendbar textarea{flex:1;min-height:44px;max-height:120px;resize:none}.sendbar button{margin:0}
body.tma .msgs{height:calc(100vh - 360px);min-height:200px}

/* ---------- admin inbox ---------- */
.inbox{display:grid;grid-template-columns:280px 1fr;gap:16px;align-items:start}
.inbox .list{padding:6px}
.thr{display:block;padding:10px;border-radius:8px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line)}
.thr.on{background:var(--bg)}
.mobile-only{display:none}
@media (max-width:760px){.inbox{grid-template-columns:1fr}.inbox.has-thread .list{display:none}.mobile-only{display:inline}}