:root{
  --bg:#EAEEF2; --surface:#FFFFFF; --surface-2:#F4F6F9; --ink:#17202C; --ink-2:#4B5667; --ink-3:#7A8595;
  --line:#D3DAE2; --brand:#007A9E; --brand-ink:#FFFFFF; --brand-soft:color-mix(in srgb,var(--brand) 13%,#FFFFFF); --accent:#C9DC2A;
  --warn:#8C520A; --warn-soft:#FAEED6; --danger:#A12C2C; --danger-soft:#F7E2E2; --ok:#1F6B3A; --ok-soft:#DFF0E4;
  --line-green:#06C755; --shadow:0 1px 2px rgba(20,30,45,.06),0 8px 24px rgba(20,30,45,.08);
  --sans:"IBM Plex Sans Thai",system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif;
  --serif:"Noto Serif Thai","IBM Plex Sans Thai",Georgia,serif;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#10151C; --surface:#18202A; --surface-2:#1E2732; --ink:#E5EAF0; --ink-2:#A2ADBC; --ink-3:#77838F;
  --line:#2B3542; --brand:#3CC4E6; --brand-ink:#06222B; --brand-soft:color-mix(in srgb,var(--brand) 18%,#18202A);
  --warn:#E3AA55; --warn-soft:#3A2B13; --danger:#E58383; --danger-soft:#3A1C1C; --ok:#7FCB97; --ok-soft:#173222;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35);
}}
:root[data-theme="dark"]{
  --bg:#10151C; --surface:#18202A; --surface-2:#1E2732; --ink:#E5EAF0; --ink-2:#A2ADBC; --ink-3:#77838F;
  --line:#2B3542; --brand:#3CC4E6; --brand-ink:#06222B; --brand-soft:color-mix(in srgb,var(--brand) 18%,#18202A);
  --warn:#E3AA55; --warn-soft:#3A2B13; --danger:#E58383; --danger-soft:#3A1C1C; --ok:#7FCB97; --ok-soft:#173222;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35);
}
*,*::before,*::after{box-sizing:inherit}
html{height:100%;scroll-padding-top:env(safe-area-inset-top,0px)}
body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.65}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
#app{height:100%}
.btn{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:7px 14px;font-weight:500}
.btn:hover{background:var(--surface-2)}
.btn.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.btn.primary:hover{filter:brightness(1.06)}
.btn.danger{color:var(--danger)}
.btn.sm{padding:4px 10px;font-size:13.5px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.icon-btn{border:0;background:transparent;border-radius:6px;padding:4px 6px;color:var(--ink-3);line-height:1}
.icon-btn:hover{background:var(--surface-2);color:var(--ink)}
input[type=text],input[type=number],select,textarea{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:7px 10px;width:100%}
textarea{resize:vertical}
.muted{color:var(--ink-2)}
.small{font-size:13px}
.badge{display:inline-block;font-size:12.5px;padding:1px 9px;border-radius:999px;font-weight:500;white-space:nowrap}
.b-pending{background:var(--warn-soft);color:var(--warn)}
.b-ok{background:var(--ok-soft);color:var(--ok)}
.b-no{background:var(--danger-soft);color:var(--danger)}
.b-brand{background:var(--brand-soft);color:var(--brand)}

/* ---------- Login ---------- */
.gate{min-height:100%;display:grid;place-items:center;padding:24px}
.gate-card{width:100%;max-width:420px;background:var(--surface);border-radius:14px;box-shadow:var(--shadow);padding:36px 32px 28px}
.brand-logo{display:block;height:150px;width:auto;max-width:100%;margin:0 0 20px;object-fit:contain}
.brand-icon{width:32px;height:32px;object-fit:contain;flex:none}
.logo-slot{display:flex;gap:16px;align-items:center;padding:12px;border:1px dashed var(--line);border-radius:10px;background:var(--surface-2);margin-bottom:10px}
.logo-slot img{max-height:90px;max-width:120px;object-fit:contain}
.logo-slot .ph-dark{background:#18202A;border-radius:8px;padding:8px}
.seal{width:52px;height:52px;border-radius:50%;border:2px solid var(--brand);display:grid;place-items:center;color:var(--brand);font-family:var(--serif);font-size:26px;font-weight:700;margin-bottom:18px}
.gate h1{font-family:var(--serif);font-size:26px;line-height:1.35;margin:0 0 6px;font-weight:700}
.gate p{margin:0 0 22px}
.line-btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;border:0;background:var(--line-green);color:#fff;border-radius:8px;padding:11px;font-weight:600;font-size:15.5px}
.line-btn:hover{filter:brightness(.95)}
.line-logo{width:22px;height:22px;border-radius:5px;background:#fff;color:var(--line-green);font-size:9px;font-weight:700;display:grid;place-items:center;letter-spacing:-.2px}
.gate-foot{margin-top:22px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}
.status-steps{list-style:none;padding:0;margin:18px 0 22px}
.status-steps li{display:flex;gap:10px;align-items:flex-start;padding:6px 0}
.dot{flex:none;width:18px;height:18px;border-radius:50%;margin-top:3px;border:2px solid var(--line)}
.dot.done{background:var(--brand);border-color:var(--brand)}
.dot.now{border-color:var(--warn);background:var(--warn-soft)}

/* ---------- Modal ---------- */
.scrim{position:fixed;inset:0;background:rgba(10,15,22,.45);display:grid;place-items:center;padding:20px;z-index:50}
.modal{width:100%;max-width:380px;background:var(--surface);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.line-head{background:var(--line-green);color:#fff;padding:12px 18px;font-weight:600;display:flex;gap:10px;align-items:center}
.modal-body{padding:20px 18px}
.modal-body ul{margin:8px 0 16px;padding-left:20px}
.modal-actions{display:flex;gap:8px;justify-content:flex-end;padding:0 18px 18px}

/* ---------- App shell ---------- */
.shell{height:100%;display:grid;grid-template-rows:auto 1fr}
.topbar{display:flex;align-items:center;gap:14px;padding:10px 18px;background:var(--surface);border-bottom:1px solid var(--line)}
.wordmark{font-family:var(--serif);font-weight:700;font-size:18px;display:flex;align-items:center;gap:10px;white-space:nowrap}
.wordmark .seal{width:30px;height:30px;font-size:16px;margin:0;border-width:1.5px}
.tabs{display:flex;gap:4px;margin-left:10px}
.tab{border:0;background:transparent;padding:6px 12px;border-radius:7px;color:var(--ink-2);font-weight:500}
.tab[aria-current="true"]{background:var(--brand-soft);color:var(--brand)}
.spacer{flex:1}
.me{display:flex;align-items:center;gap:8px;font-size:14px}
.avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:13px;font-weight:600;flex:none}
.menu-toggle{display:none}

.chat-layout{display:grid;grid-template-columns:280px 1fr;min-height:0}
.sidebar{background:var(--surface-2);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.side-top{padding:14px}
.quota{padding:0 14px 12px;font-size:13px;color:var(--ink-2)}
.meter{height:5px;border-radius:5px;background:var(--line);overflow:hidden;margin-top:6px}
.meter > i{display:block;height:100%;background:var(--brand)}
.meter.low > i{background:var(--warn)}
.history{overflow:auto;padding:0 8px 16px;flex:1}
.history h3{font-size:12.5px;font-weight:500;color:var(--ink-3);margin:14px 8px 6px}
.h-item{display:flex;align-items:center;gap:4px;border-radius:7px;padding:2px 4px 2px 10px}
.h-item:hover{background:var(--surface)}
.h-item[aria-current="true"]{background:var(--surface);box-shadow:inset 3px 0 0 var(--brand)}
.h-title{flex:1;border:0;background:transparent;text-align:left;padding:6px 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}
.h-item .icon-btn{opacity:0}
.h-item:hover .icon-btn,.h-item[aria-current="true"] .icon-btn,.h-item .icon-btn:focus-visible{opacity:1}
.h-edit{flex:1;padding:4px 8px !important;font-size:14px}

.chat-main{display:flex;flex-direction:column;min-height:0;background:var(--bg)}
.chat-head{padding:12px 24px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px;background:var(--surface)}
.chat-head h2{margin:0;font-size:16px;font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.msgs{flex:1;overflow:auto;padding:24px}
.msgs-inner{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.msg{max-width:92%}
.msg.user{align-self:flex-end;background:var(--brand);color:var(--brand-ink);padding:10px 14px;border-radius:12px 12px 2px 12px;white-space:pre-wrap}
.msg.bot{align-self:flex-start;background:var(--surface);border:1px solid var(--line);padding:14px 16px;border-radius:2px 12px 12px 12px}
.msg.bot p{margin:0 0 8px}
.msg.bot p:last-child{margin-bottom:0}
.msg.bot ul{margin:4px 0 8px;padding-left:20px}
.cite{display:inline-block;font-size:11.5px;font-weight:600;background:var(--brand-soft);color:var(--brand);border-radius:4px;padding:0 5px;margin:0 1px;vertical-align:1px;border:0}
.sources{margin-top:12px;padding-top:10px;border-top:1px dashed var(--line);display:flex;flex-direction:column;gap:6px}
.src{display:block;width:100%;text-align:left;border:0;border-left:3px solid var(--brand);background:var(--surface-2);border-radius:0 6px 6px 0;padding:6px 10px;font-size:13px}
.src b{font-weight:600}
.src .snip{display:none;color:var(--ink-2);margin-top:4px;white-space:pre-wrap}
.src[aria-expanded="true"] .snip{display:block}
.msg-meta{font-size:12px;color:var(--ink-3);margin-top:8px}
.thinking{color:var(--ink-3);font-style:italic}
.empty{max-width:560px;margin:8vh auto 0;text-align:center}
.empty h2{font-family:var(--serif);font-size:24px;margin:0 0 8px}
.suggest{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px}
.suggest button{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 14px;font-size:14px}
.suggest button:hover{border-color:var(--brand);color:var(--brand)}
.composer{padding:14px 24px 18px;background:var(--bg)}
.composer-inner{max-width:760px;margin:0 auto;display:flex;gap:8px;align-items:flex-end;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px}
.composer textarea{border:0;background:transparent;min-height:40px;max-height:160px;resize:none;padding:8px}
.composer textarea:focus{outline:none}
.composer-inner:focus-within{border-color:var(--brand)}
.notice{max-width:760px;margin:0 auto 8px;padding:8px 12px;border-radius:8px;font-size:13.5px}
.notice.warn{background:var(--warn-soft);color:var(--warn)}
.notice.err{background:var(--danger-soft);color:var(--danger)}

/* ---------- Admin ---------- */
.admin{display:grid;grid-template-columns:220px 1fr;min-height:0}
.admin-nav{background:var(--surface-2);border-right:1px solid var(--line);padding:14px 10px;display:flex;flex-direction:column;gap:2px}
.admin-nav button{border:0;background:transparent;text-align:left;padding:8px 12px;border-radius:7px;display:flex;justify-content:space-between;align-items:center;color:var(--ink-2)}
.admin-nav button[aria-current="true"]{background:var(--surface);color:var(--ink);font-weight:600;box-shadow:inset 3px 0 0 var(--brand)}
.admin-body{overflow:auto;padding:28px 32px 60px}
.admin-body h2{font-family:var(--serif);font-size:22px;margin:0 0 4px}
.admin-body > .lead{margin:0 0 22px;color:var(--ink-2);max-width:68ch}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin-bottom:18px}
.panel h3{margin:0 0 10px;font-size:15.5px}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:760px;font-size:14px}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-weight:500;color:var(--ink-3);font-size:13px;background:var(--surface-2)}
tr:last-child td{border-bottom:0}
td .who{display:flex;align-items:center;gap:10px}
.lim{width:80px !important;padding:4px 8px !important}
.row-actions{display:flex;gap:6px;flex-wrap:wrap}
.model-list{display:flex;flex-direction:column;gap:8px}
.model{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:9px;padding:12px 14px;cursor:pointer}
.model:has(input:checked){border-color:var(--brand);background:var(--brand-soft)}
.model input{margin-top:5px;accent-color:var(--brand)}
.model .m-name{font-weight:600}
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:14px}
.field label{font-size:13.5px;font-weight:500}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
pre.code{background:var(--surface-2);border:1px solid var(--line);border-radius:8px;padding:12px 14px;overflow-x:auto;font-size:12.5px;line-height:1.55;margin:0 0 10px;white-space:pre}
.host-mock{position:relative;height:440px;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--surface-2)}
.host-bar{background:var(--surface);border-bottom:1px solid var(--line);padding:8px 12px;font-size:12.5px;color:var(--ink-3)}
.host-content{padding:22px}
.host-content .ph{height:12px;border-radius:4px;background:var(--line);margin-bottom:10px}
.w-bubble{position:absolute;bottom:16px;width:56px;height:56px;border-radius:50%;border:2px solid var(--brand);background:#fff !important;padding:8px;box-shadow:var(--shadow)}
.w-bubble img{width:100%;height:100%;object-fit:contain}
.w-panel{position:absolute;bottom:78px;width:320px;max-width:calc(100% - 32px);height:340px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden}
.w-head{color:#fff;padding:9px 12px;font-weight:600;font-size:14px;display:flex;justify-content:space-between;align-items:center}
.w-head button{border:0;background:transparent;color:#fff;font-size:18px;line-height:1}
.w-msgs{flex:1;overflow:auto;padding:10px;display:flex;flex-direction:column;gap:8px;font-size:13.5px}
.w-msgs .msg{max-width:95%;padding:7px 10px}
.w-msgs .sources{display:none}
.w-comp{display:flex;gap:6px;padding:8px;border-top:1px solid var(--line)}
.w-comp input{padding:6px 9px !important;font-size:13.5px}
.doc{border-left:3px solid var(--brand);padding:8px 12px;background:var(--surface-2);border-radius:0 6px 6px 0;margin-bottom:8px;font-size:14px}
.saved{color:var(--ok);font-size:13px;margin-left:10px}

/* ---------- Embed-only page ---------- */
.embed-page{height:100%;display:flex;flex-direction:column;background:var(--surface)}

@media (max-width:820px){
  .draft-grid{grid-template-columns:1fr}
  .chat-layout,.admin{grid-template-columns:1fr}
  .sidebar{position:fixed;top:0;bottom:0;left:0;width:84%;max-width:300px;z-index:30;transform:translateX(-100%);transition:transform .2s;padding-top:env(safe-area-inset-top,0px)}
  .sidebar.open{transform:none;box-shadow:var(--shadow)}
  .menu-toggle{display:inline-block}
  .admin-nav{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line)}
  .admin-nav button{white-space:nowrap}
  .admin-body{padding:20px 16px 80px}
  .me .me-name{display:none}
  .tabs{margin-left:0}
  .wordmark span{display:none}
  .msgs{padding:16px}
  .composer{padding:10px 12px 14px}
  .grid2,.grid3{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important}}

/* ---------- additions for the full app ---------- */
.dev-login{display:flex;gap:8px;margin-top:14px}
.loading{min-height:100%;display:grid;place-items:center;color:var(--ink-3)}
.avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}
.embed-frame{width:100%;height:560px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.env-list{margin:0;padding-left:18px}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:8px 16px;border-radius:8px;font-size:14px;z-index:80}