:root{
  --navy:#1673B8; --navy-2:#2E9BE6; --navy-3:#CFE7FA;
  --gold:#C8A415; --gold-2:#E2C24A; --teal:#1F9DB0;
  --bg:#F6F4EE; --surface:#FFFFFF; --ink:#16212E; --muted:#6B7787; --line:#E4E0D4;
  --user:#1673B8; --user-ink:#F7F3E6; --code:#0F1C2B;
  --radius:18px; --shadow:0 10px 30px -12px rgba(19,43,69,.25);
  --font:'Plus Jakarta Sans',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0B1724; --surface:#12233A; --ink:#E8EDF3; --muted:#93A3B8; --line:#1E3550;
  --user:#C8A415; --user-ink:#13202F; --code:#07111D; --shadow:0 10px 30px -12px rgba(0,0,0,.6);
}}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{font-family:var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}

/* ---------- Login / setup ---------- */
body.auth{display:grid;place-items:center;padding:24px 16px;
  background:radial-gradient(1200px 600px at 10% -10%,rgba(200,164,21,.18),transparent 60%),
             radial-gradient(900px 500px at 110% 110%,rgba(31,157,176,.20),transparent 60%),
             linear-gradient(160deg,var(--navy) 0%,var(--navy-3) 100%);}
.auth-card{width:100%;max-width:400px;background:var(--surface);border-radius:24px;padding:36px 30px 26px;box-shadow:0 30px 80px -20px rgba(11,46,85,.28);text-align:center;border-top:4px solid var(--gold)}
.auth-logo{width:76px;height:76px;object-fit:contain;border-radius:20px;background:#fff;padding:8px;box-shadow:var(--shadow)}
.auth-card h1{margin:16px 0 4px;font-size:26px;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.auth-card h1 span{background:linear-gradient(90deg,var(--gold),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.auth-card form{display:grid;gap:14px;margin-top:20px;text-align:left}
.auth-card label{display:grid;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}
.auth-card input{width:100%;padding:12px 14px;border-radius:12px;border:1.5px solid var(--line);background:var(--bg);outline:none;transition:border-color .15s}
.auth-card input:focus{border-color:var(--gold)}
.muted{color:var(--muted);font-size:14px;margin:4px 0}
.foot{margin:22px 0 0;font-size:12px;color:var(--muted)}
.note{padding:10px 12px;border-radius:10px;font-size:14px;background:rgba(31,157,176,.12);text-align:left}
.note.err{background:rgba(200,40,40,.12);color:#B42318}
.note.ok{background:rgba(30,140,80,.12);color:#13734A}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;width:100%;padding:12px 18px;border:0;border-radius:12px;cursor:pointer;font-weight:700;
  background:linear-gradient(135deg,var(--navy),#24507D);color:#fff;text-decoration:none;box-shadow:0 8px 20px -8px rgba(27,58,92,.6);transition:transform .1s,filter .15s}
.btn:hover{filter:brightness(1.1)} .btn:active{transform:translateY(1px)}

/* ---------- App shell ---------- */
body.app{overflow:hidden}
.shell{display:grid;grid-template-columns:288px 1fr;height:100dvh}
.side{background:linear-gradient(180deg,var(--navy) 0%,var(--navy-3) 100%);color:#E9EEF5;display:flex;flex-direction:column;padding:18px 14px;min-width:0;position:relative;z-index:20}
.side::after{content:"";position:absolute;inset:auto 0 0 0;height:180px;pointer-events:none;background:radial-gradient(260px 140px at 0% 100%,rgba(200,164,21,.18),transparent 70%)}
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px 18px}
.brand img{width:42px;height:42px;border-radius:12px;background:#fff;padding:4px;object-fit:contain}
.brand b{display:block;font-size:16px;letter-spacing:-.01em}
.brand span{font-size:12px;color:var(--gold-2);font-weight:600;letter-spacing:.08em;text-transform:uppercase}
.brand .icon{margin-left:auto}
.new{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:14px;border:1px solid rgba(226,194,74,.45);background:rgba(200,164,21,.12);color:#FFF6D6;font-weight:700;cursor:pointer;transition:background .15s}
.new:hover{background:rgba(200,164,21,.22)}
.new span{font-size:18px;color:var(--gold-2)}
.search{margin:12px 0 8px;padding:10px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);color:#fff;outline:none}
.search::placeholder{color:rgba(233,238,245,.5)}
.list{flex:1;overflow:auto;margin:0 -6px;padding:0 6px;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.2) transparent}
.group{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:rgba(233,238,245,.45);margin:14px 8px 6px;font-weight:700}
.item{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:10px;cursor:pointer;color:rgba(233,238,245,.85);font-size:14px}
.item:hover{background:rgba(255,255,255,.07)}
.item.active{background:rgba(255,255,255,.12);color:#fff;box-shadow:inset 3px 0 0 var(--gold)}
.item .name{flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.item .del{opacity:0;border:0;background:none;color:inherit;cursor:pointer;padding:2px 4px;border-radius:6px}
.item:hover .del{opacity:.7} .item .del:hover{opacity:1;background:rgba(255,255,255,.12)}
.side-foot{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.1);padding-top:12px;margin-top:10px}
.link{background:none;border:0;color:rgba(233,238,245,.75);cursor:pointer;font-size:14px;text-decoration:none;padding:6px 8px;border-radius:8px}
.link:hover{color:#fff;background:rgba(255,255,255,.08)}

.main{display:flex;flex-direction:column;min-width:0;height:100dvh;background:var(--bg)}
.top{display:flex;align-items:center;gap:12px;padding:14px 22px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(8px)}
.top h2{flex:1;margin:0;font-size:16px;font-weight:700;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;outline:none;border-radius:6px;padding:2px 4px}
.top h2[contenteditable=true]{background:var(--surface);box-shadow:0 0 0 2px var(--gold)}
.top select{padding:8px 10px;border-radius:10px;border:1px solid var(--line);background:var(--surface);font-size:13px;font-weight:600;max-width:52vw}
.icon{background:none;border:0;cursor:pointer;font-size:18px;padding:6px 8px;border-radius:8px;color:inherit}
.only-m{display:none}

.thread{flex:1;overflow:auto;padding:28px 22px 12px;scroll-behavior:smooth}
.thread>*{max-width:820px;margin-left:auto;margin-right:auto}
.hero{text-align:center;padding:6vh 8px 20px}
.hero img{width:84px;height:84px;object-fit:contain;background:#fff;border-radius:24px;padding:8px;box-shadow:var(--shadow)}
.hero h3{font-size:clamp(22px,3.2vw,30px);margin:18px 0 8px;letter-spacing:-.02em}
.hero h3 span{color:var(--gold)}
.hero p{color:var(--muted);max-width:520px;margin:0 auto 22px;line-height:1.55}
.chips{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;text-align:left}
.chip{padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-size:14px;line-height:1.4;transition:border-color .15s,transform .1s}
.chip b{display:block;font-size:13px;color:var(--gold);margin-bottom:4px}
.chip:hover{border-color:var(--gold);transform:translateY(-1px)}

.msg{display:flex;gap:14px;margin-bottom:22px;animation:rise .25s ease}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1}}
.msg .av{flex:none;width:34px;height:34px;border-radius:10px;background:#fff;padding:3px;object-fit:contain;box-shadow:0 2px 8px rgba(0,0,0,.08)}
.msg .body{min-width:0;flex:1;line-height:1.65;font-size:15.5px}
.msg.user{justify-content:flex-end}
.msg.user .body{flex:0 1 auto;max-width:78%;background:var(--user);color:var(--user-ink);padding:12px 16px;border-radius:18px 18px 4px 18px;white-space:pre-wrap;word-wrap:break-word}
.msg.user .imgs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.msg.user .imgs img{max-height:140px;border-radius:10px}
.msg.ai .body>:first-child{margin-top:4px}
.msg.ai .body p{margin:0 0 .8em}
.msg.ai .body h1,.msg.ai .body h2,.msg.ai .body h3{line-height:1.3;margin:1.1em 0 .5em;letter-spacing:-.01em}
.msg.ai .body ul,.msg.ai .body ol{padding-left:1.4em;margin:0 0 .8em}
.msg.ai .body li{margin:.2em 0}
.msg.ai .body a{color:var(--teal)}
.msg.ai .body table{border-collapse:collapse;width:100%;margin:0 0 1em;font-size:14px;display:block;overflow:auto}
.msg.ai .body th,.msg.ai .body td{border:1px solid var(--line);padding:7px 10px;text-align:left}
.msg.ai .body th{background:color-mix(in srgb,var(--gold) 14%,var(--surface))}
.msg.ai .body blockquote{margin:0 0 .8em;padding:.4em 1em;border-left:3px solid var(--gold);color:var(--muted)}
.msg.ai .body code{font-family:var(--mono);font-size:.88em;background:color-mix(in srgb,var(--navy) 9%,transparent);padding:.12em .4em;border-radius:6px}
.msg.ai .body pre{position:relative;background:var(--code);color:#E6EDF6;padding:16px;border-radius:12px;overflow:auto;margin:0 0 1em}
.msg.ai .body pre code{background:none;padding:0;color:inherit}
.copy{position:absolute;top:8px;right:8px;font-size:11px;padding:4px 8px;border-radius:6px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:#E6EDF6;cursor:pointer}
.meta{display:flex;gap:10px;align-items:center;margin-top:6px;font-size:12px;color:var(--muted)}
.meta button{background:none;border:0;color:inherit;cursor:pointer;padding:2px 6px;border-radius:6px}
.meta button:hover{background:color-mix(in srgb,var(--ink) 8%,transparent);color:var(--ink)}
.err-box{background:rgba(200,40,40,.1);color:#B42318;padding:10px 14px;border-radius:12px;font-size:14px}
.typing{display:inline-flex;gap:4px;padding:8px 0}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--gold);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s;background:var(--teal)} .typing i:nth-child(3){animation-delay:.4s;background:var(--navy)}
@keyframes blink{0%,80%,100%{opacity:.25;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}

.composer{padding:10px 22px 14px}
.composer>*{max-width:820px;margin-left:auto;margin-right:auto}
.box{display:flex;align-items:flex-end;gap:8px;background:var(--surface);border:1.5px solid var(--line);border-radius:var(--radius);padding:8px 8px 8px 10px;box-shadow:var(--shadow);transition:border-color .15s}
.box:focus-within{border-color:var(--gold)}
.box textarea{flex:1;border:0;outline:none;resize:none;background:none;max-height:220px;padding:8px 4px;line-height:1.5}
.clip{opacity:.7} .clip:hover{opacity:1}
.send{flex:none;width:42px;height:42px;border-radius:12px;border:0;cursor:pointer;color:#fff;font-size:16px;background:linear-gradient(135deg,var(--gold),#A9880C);box-shadow:0 6px 16px -6px rgba(200,164,21,.8);transition:transform .1s,filter .15s}
.send:hover{filter:brightness(1.08)} .send:disabled{opacity:.45;cursor:not-allowed}
.send.stop{background:linear-gradient(135deg,#B42318,#7A1A12);box-shadow:none}
.attach-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.attach-row:empty{display:none}
.thumb{position:relative} .thumb img{height:64px;border-radius:10px;border:1px solid var(--line)}
.thumb button{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;border:0;background:var(--navy);color:#fff;font-size:11px;cursor:pointer}
.hint{text-align:center;font-size:12px;color:var(--muted);margin-top:8px}

dialog{border:0;border-radius:20px;padding:0;width:min(560px,calc(100vw - 32px));background:var(--surface);color:var(--ink);box-shadow:0 30px 80px -20px rgba(0,0,0,.5)}
dialog::backdrop{background:rgba(13,31,51,.55);backdrop-filter:blur(3px)}
.dlg{padding:24px;display:grid;gap:16px}
.dlg h3{margin:0}
.dlg label{display:grid;gap:8px;font-size:13px;font-weight:600;color:var(--muted)}
.dlg textarea{width:100%;padding:12px;border-radius:12px;border:1.5px solid var(--line);background:var(--bg);resize:vertical;line-height:1.5;color:var(--ink)}
.dlg input[type=range]{accent-color:var(--gold)}
.dlg-actions{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap}
.dlg-actions .btn{width:auto}
.ghost{padding:10px 14px;border-radius:12px;border:1px solid var(--line);background:none;cursor:pointer;font-weight:600}

.scrim{display:none}
@media (max-width:860px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;inset:0 auto 0 0;width:min(86vw,300px);transform:translateX(-100%);transition:transform .25s ease}
  .side.open{transform:none}
  .scrim.show{display:block;position:fixed;inset:0;background:rgba(13,31,51,.5);z-index:10}
  .only-m{display:inline-block}
  .top{padding:12px 16px}
  .thread{padding:20px 16px 8px}
  .composer{padding:8px 16px calc(12px + env(safe-area-inset-bottom))}
  .msg.user .body{max-width:88%}
  .msg .av{width:28px;height:28px}
}

/* ---------- Meteran biaya ---------- */
.meter-top{display:flex;flex-direction:column;gap:4px;align-items:flex-end;text-decoration:none;color:var(--muted);font-size:11.5px;font-weight:600;white-space:nowrap;padding:4px 6px;border-radius:8px}
.meter-top:hover{background:var(--surface)}
.meter-top i{display:block;width:120px;height:5px;border-radius:9px;background:var(--line);overflow:hidden}
.meter-top b{display:block;height:100%;width:0;background:var(--teal);border-radius:9px;transition:width .4s}
.meter-top.warn{color:#B7791F} .meter-top.warn b{background:#E0A100}
.meter-top.over{color:#B42318} .meter-top.over b{background:#D92D20}
.meter.big{height:10px;border-radius:9px;background:var(--line);overflow:hidden;margin:10px 0}
.meter.big i{display:block;height:100%;background:var(--teal)}
.meter.big.warn i{background:#E0A100} .meter.big.over i{background:#D92D20}
.hint.warn{color:#9A6700;background:rgba(224,161,0,.12);padding:6px 10px;border-radius:10px;text-align:left}
.toast{position:fixed;left:50%;top:76px;transform:translate(-50%,-12px);opacity:0;max-width:min(92vw,520px);background:var(--navy);color:#fff;padding:12px 16px;border-radius:12px;box-shadow:var(--shadow);font-size:14px;z-index:50;transition:.3s;border-left:4px solid var(--gold)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Lampiran file ---------- */
.thumb.file{display:flex;align-items:center;max-width:240px;height:40px;padding:0 26px 0 12px;border-radius:10px;border:1px solid var(--line);background:var(--surface);font-size:13px;font-weight:600;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.thumb.file.busy{padding-right:12px;color:var(--muted)}
.att-warn{flex-basis:100%;font-size:12px;color:#9A6700}
.files{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:6px}
.fchip{display:inline-block;padding:4px 10px;border-radius:8px;background:rgba(255,255,255,.14);font-size:12.5px;font-weight:600}

/* ---------- Halaman akun ---------- */
body.acct{place-items:start center}
.auth-card.wide{max-width:720px;text-align:left}
.auth-card.wide h1{text-align:center}
.back{font-size:13px;font-weight:600;color:var(--teal);text-decoration:none}
.card{border:1px solid var(--line);border-radius:16px;padding:16px 18px;margin-top:16px;background:var(--bg)}
.card h3{margin:4px 0 8px;font-size:15px}
.auth-card .card form,.auth-card form.card{display:grid;gap:12px;margin-top:16px}
.auth-card select{width:100%;padding:11px 12px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.small{font-size:12px} .muted.small{margin:0}
label.inline{display:inline-flex !important;align-items:center;gap:6px;margin-left:8px;font-weight:500}
label.inline input{width:auto}
.warnbox{background:rgba(224,161,0,.12);color:#8A5A00;border-radius:12px;padding:10px 12px;font-size:13px;line-height:1.5}
.tbl{width:100%;border-collapse:collapse;font-size:13px;margin:8px 0}
.tbl th,.tbl td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
.tbl th{color:var(--muted);font-weight:600}
.btn.ghost{background:none;color:var(--ink);border:1.5px solid var(--line)}
code{font-family:var(--mono);font-size:.92em}
@media (prefers-color-scheme:dark){.warnbox,.hint.warn,.att-warn{color:#F2C14E}}
@media (max-width:860px){
  .meter-top i{width:64px} .meter-top span{font-size:10.5px}
  .grid2{grid-template-columns:1fr}
}
@media (max-width:520px){.meter-top span{display:none} .meter-top i{width:34px} .top select{max-width:44vw} .top h2{min-width:0}}