:root{--bg:#f6f7f9;--fg:#1c2330;--muted:#667085;--card:#fff;--line:#e3e6eb;--pri:#2457d6;--pri-fg:#fff;--danger:#c4271f;--ok:#157347;--unread:#0b1f4d;--side:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#12151b;--fg:#e6e9ef;--muted:#9aa3b2;--card:#1a1e26;--line:#2b313c;--pri:#6b94ff;--pri-fg:#0b1020;--danger:#ff7b72;--ok:#56d364;--unread:#fff;--side:#161a21}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--pri)}
h1{font-size:1.35rem;margin:0 0 1rem}h2{font-size:1.1rem;margin:1.6rem 0 .6rem}
.muted{color:var(--muted)}.small{font-size:.875rem}
input,textarea,select,button{font:inherit;color:inherit}
input[type=text],input[type=email],input[type=password],textarea{width:100%;padding:.6rem .7rem;border:1px solid var(--line);border-radius:8px;background:var(--card)}
input:focus,textarea:focus{outline:2px solid var(--pri);outline-offset:1px}
label{display:block;font-weight:600;margin:.9rem 0 .25rem;font-size:.92rem}
textarea{min-height:16rem;resize:vertical}
.btn{display:inline-block;padding:.55rem 1rem;border:1px solid var(--line);border-radius:8px;background:var(--card);cursor:pointer;text-decoration:none;color:var(--fg);font-size:.95rem}
.btn:hover{border-color:var(--pri)}
.btn-primary{background:var(--pri);color:var(--pri-fg);border-color:var(--pri)}
.btn-danger{color:var(--danger);border-color:var(--danger)}
.btn-block{display:block;width:100%;text-align:center;margin-bottom:.6rem}
.btn[disabled]{opacity:.6;cursor:wait}
.alert{padding:.7rem .9rem;border-radius:8px;margin:0 0 1rem;border:1px solid var(--line);background:var(--card)}
.alert-error{border-color:var(--danger);color:var(--danger)}.alert-ok{border-color:var(--ok);color:var(--ok)}
.hp{position:absolute;left:-9999px;height:0;width:0;overflow:hidden}
/* halaman auth */
.auth{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:1rem}
.card{width:100%;max-width:26rem;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.6rem}
.brand-lg{font-size:1.5rem;margin-bottom:1.1rem}
.card .btn-primary{width:100%;margin-top:1.2rem;padding:.7rem}
.links{margin-top:1rem;font-size:.9rem;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
/* aplikasi */
.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:.7rem;padding:.55rem .9rem;background:var(--side);border-bottom:1px solid var(--line)}
.brand{font-weight:700;text-decoration:none;color:var(--fg)}.who{margin-left:auto;color:var(--muted);font-size:.85rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.icon-btn{display:none;background:none;border:0;font-size:1.4rem;cursor:pointer;padding:.1rem .4rem}
.shell{display:flex;align-items:flex-start;max-width:78rem;margin:0 auto}
.side{width:15rem;flex:none;padding:1rem;position:sticky;top:3rem}
.main{flex:1;min-width:0;padding:1rem 1.2rem 3rem}
.folders{list-style:none;margin:.6rem 0 1rem;padding:0}
.folders a{display:flex;justify-content:space-between;padding:.45rem .7rem;border-radius:8px;text-decoration:none;color:var(--fg)}
.folders a:hover{background:var(--line)}.folders a.active{background:var(--pri);color:var(--pri-fg);font-weight:600}
.badge{background:var(--danger);color:#fff;border-radius:99px;padding:0 .5rem;font-size:.78rem}
.quota{margin:1rem 0;font-size:.82rem;color:var(--muted)}
progress.quota-bar{display:block;width:100%;height:6px;margin-top:.3rem;-webkit-appearance:none;appearance:none;border:0;border-radius:6px;background:var(--line);overflow:hidden}
progress.quota-bar::-webkit-progress-bar{background:var(--line)}
progress.quota-bar::-webkit-progress-value{background:var(--pri)}
progress.quota-bar::-moz-progress-bar{background:var(--pri)}
.quota-high progress.quota-bar::-webkit-progress-value{background:var(--danger)}
.quota-high progress.quota-bar::-moz-progress-bar{background:var(--danger)}
.mt{margin-top:1.2rem}
.danger-text{color:var(--danger);font-weight:600}
.w-search{max-width:22rem}
.msg-head.plain{border:0;padding:0;margin:0;background:none}
.card.wide{max-width:46rem}
table.checks td{white-space:normal;vertical-align:top}
.ok{color:var(--ok)}.bad{color:var(--danger)}
code,.keybox{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em;word-break:break-all;background:var(--bg);padding:.1rem .35rem;border-radius:4px}
/* daftar pesan */
.toolbar{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;margin-bottom:.8rem}
.toolbar .spacer{flex:1}
.list{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.row{display:grid;grid-template-columns:2rem 12rem 1fr auto;gap:.6rem;align-items:center;padding:.6rem .8rem;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:0}
.row a{color:inherit;text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row.unread .from,.row.unread .subj{font-weight:700;color:var(--unread)}
.row .date{color:var(--muted);font-size:.85rem;white-space:nowrap}
.empty{padding:2rem;text-align:center;color:var(--muted)}
.pager{display:flex;justify-content:space-between;align-items:center;margin-top:1rem}
/* baca pesan */
.msg-head{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1rem;margin-bottom:1rem}
.msg-head h1{word-break:break-word}
.msg-head dl{margin:0;display:grid;grid-template-columns:5rem 1fr;gap:.2rem .6rem;font-size:.92rem}
.msg-head dt{color:var(--muted)}.msg-head dd{margin:0;word-break:break-word}
.msg-body{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1rem}
.msg-text{white-space:pre-wrap;word-break:break-word;font:inherit;margin:0}
.msg-frame{width:100%;height:65vh;border:1px solid var(--line);border-radius:8px;background:#fff}
.atts{margin:1rem 0 0;padding:0;list-style:none;display:flex;gap:.5rem;flex-wrap:wrap}
.atts a{display:inline-block;padding:.35rem .7rem;border:1px solid var(--line);border-radius:99px;text-decoration:none;font-size:.88rem}
/* tabel admin */
.table-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:.9rem}
th,td{text-align:left;padding:.55rem .7rem;border-bottom:1px solid var(--line);white-space:nowrap}
th{color:var(--muted);font-weight:600}
.inline{display:inline}
.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem;max-width:36rem}
.cols{display:grid;gap:1rem}
@media (max-width:760px){
  .icon-btn{display:block}
  .side{display:none;position:fixed;inset:3rem 0 0 0;width:auto;z-index:4;background:var(--side);overflow:auto}
  .side.open{display:block}
  .row{grid-template-columns:1.6rem 1fr auto}
  .row .from{grid-column:2/4;font-size:.85rem;color:var(--muted)}
  .row .subj{grid-column:2/3}
  .main{padding:.8rem .8rem 3rem}
  .msg-head dl{grid-template-columns:4rem 1fr}
}

.qr{display:block;margin:1rem auto;max-width:260px;width:100%;height:auto;background:#fff;padding:.5rem;border-radius:.5rem}