:root{--bg:#0B1426;--panel:#1E293B;--panel2:#111C33;--text:#F1F5F9;--muted:#94A3B8;--cyan:#22D3EE;--line:#334155;--red:#F87171}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:"Noto Sans Thai","Leelawadee UI","Sukhumvit Set",Tahoma,system-ui,sans-serif;font-size:15px}
button,input,textarea{font:inherit;color:inherit}
.wrap{max-width:720px;margin:0 auto;height:100%;display:flex;flex-direction:column}
header{display:flex;align-items:center;gap:12px;padding:16px}
.logo{width:40px;height:40px;border-radius:20px;background:var(--cyan);color:var(--bg);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex:none}
.title{flex:1;display:flex;flex-direction:column}
.title b{font-size:18px}.title small{color:var(--muted);font-size:12px}
.ghost{min-height:44px;padding:0 14px;border-radius:22px;border:1px solid var(--line);background:transparent;cursor:pointer}
#log{flex:1;overflow-y:auto;padding:8px 16px 16px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:85%;padding:10px 14px;border-radius:16px;line-height:1.6;white-space:pre-wrap;word-wrap:break-word}
.me{align-self:flex-end;background:var(--cyan);color:var(--bg);border-bottom-right-radius:4px}
.ai{align-self:flex-start;background:var(--panel);border-bottom-left-radius:4px}
.tag{align-self:flex-start;font-size:11px;font-weight:600;border:1px solid;border-radius:10px;padding:1px 8px;margin-bottom:-4px}
.err{align-self:center;color:var(--red);font-size:13px}
.thinking{align-self:flex-start;color:var(--muted);font-size:13px}
form.compose{display:flex;gap:8px;padding:12px 16px 20px}
form.compose textarea{flex:1;resize:none;min-height:48px;max-height:160px;border:none;border-radius:24px;background:var(--panel);padding:13px 18px;outline:none}
form.compose textarea:focus{outline:2px solid var(--cyan)}
.send{width:48px;height:48px;border-radius:24px;border:none;background:var(--cyan);color:var(--bg);cursor:pointer;display:flex;align-items:center;justify-content:center;flex:none}
.send:disabled{opacity:.5;cursor:default}
.foot{color:var(--muted);font-size:12px;text-align:center;padding:0 16px 8px}
.login{max-width:360px;margin:0 auto;min-height:100%;display:flex;flex-direction:column;justify-content:center;gap:16px;padding:24px}
.login .logo{width:72px;height:72px;border-radius:36px;font-size:34px;align-self:center}
.login h1{margin:0;text-align:center;font-size:28px}
.login p{margin:0;text-align:center;color:var(--muted)}
.login label{font-size:13px;color:var(--muted)}
.login input{width:100%;min-height:48px;border-radius:12px;border:1px solid var(--line);background:var(--panel2);padding:0 14px}
.login input:focus{outline:2px solid var(--cyan)}
.primary{min-height:48px;border-radius:12px;border:none;background:var(--cyan);color:var(--bg);font-weight:700;cursor:pointer}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
/* สัปดาห์ 2 */
.ai p{margin:0 0 4px}.ai p:last-child{margin-bottom:0}.ai ul,.ai ol{margin:4px 0;padding-left:22px}.ai li{margin:2px 0}
.ai h4{margin:6px 0 4px;font-size:15px}.ai code{background:var(--panel2);border-radius:6px;padding:1px 6px;font-size:13px}.ai strong{color:#fff}
.stack{display:flex;flex-direction:column;gap:10px}
.scan{align-self:center;width:168px;height:168px;border-radius:84px;border:2px solid var(--panel);background:var(--panel2);color:var(--cyan);display:flex;align-items:center;justify-content:center;cursor:pointer;margin:8px auto}
.scan:active{transform:scale(.97)}
.login section{display:flex;flex-direction:column;gap:10px}
.login .big{color:var(--text);font-weight:600;font-size:17px}
.linkbtn{background:none;border:none;color:var(--cyan);min-height:44px;cursor:pointer;text-decoration:underline}
.banner{display:flex;align-items:center;gap:10px;margin:0 16px 8px;padding:10px 12px;border-radius:12px;background:var(--panel2);border:1px solid var(--cyan);font-size:13px}
.banner span{flex:1}
.small{min-height:36px;padding:0 12px;font-size:13px}
.primary.small{border-radius:18px}
dialog{border:none;padding:0;background:transparent;width:100%;max-width:520px}
dialog::backdrop{background:rgba(0,0,0,.6)}
.sheet{background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:12px}
.sheet-head{display:flex;align-items:center;justify-content:space-between;font-size:17px}
.sheet input{width:100%;min-height:46px;border-radius:12px;border:1px solid var(--line);background:var(--panel2);padding:0 14px}
.sheet label{font-size:13px;color:var(--muted)}
.muted{color:var(--muted);font-size:13px;margin:0}
.devices{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.devices li{display:flex;align-items:center;gap:8px;background:var(--panel);border-radius:12px;padding:8px 8px 8px 12px;font-size:13px}
.devices li span{flex:1}
.wide{width:100%}
#setMsg,#msg{min-height:20px;text-align:center;font-size:13px;color:var(--muted);margin:0}
[hidden]{display:none!important}