:root{
  --bg:#ffffff;--side:#f6f6f7;--hover:#f2f2f4;--sel:#e9edfb;--fg:#18181b;--fg2:#3f3f46;--muted:#71717a;--faint:#a1a1aa;
  --line:#e7e7ea;--line2:#f0f0f2;--accent:#3557d4;--accent-fg:#ffffff;--accent-soft:#eef1fc;--unread:#2563eb;
  --ok:#15803d;--ok-soft:#ecfdf3;--warn:#b45309;--warn-soft:#fffbeb;--bad:#b91c1c;--bad-soft:#fef2f2;--pin:#c2410c;
  --shadow:0 1px 2px rgba(16,16,24,.06),0 1px 3px rgba(16,16,24,.06);
  --av-l:93%;--av-fl:30%;--av-s:55%;color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
  --bg:#111113;--side:#18181b;--hover:#1f1f23;--sel:#1e2440;--fg:#ececef;--fg2:#c9c9cf;--muted:#9b9ba3;--faint:#6b6b73;
  --line:#2a2a2f;--line2:#202024;--accent:#7f9bff;--accent-fg:#0b0d18;--accent-soft:#1c2340;--unread:#7f9bff;
  --ok:#4ade80;--ok-soft:#10241a;--warn:#fbbf24;--warn-soft:#2a2111;--bad:#f87171;--bad-soft:#2c1415;--pin:#fb923c;
  --shadow:none;--av-l:24%;--av-fl:82%;--av-s:35%;color-scheme:dark;
}}
:root[data-theme=dark]{
  --bg:#111113;--side:#18181b;--hover:#1f1f23;--sel:#1e2440;--fg:#ececef;--fg2:#c9c9cf;--muted:#9b9ba3;--faint:#6b6b73;
  --line:#2a2a2f;--line2:#202024;--accent:#7f9bff;--accent-fg:#0b0d18;--accent-soft:#1c2340;--unread:#7f9bff;
  --ok:#4ade80;--ok-soft:#10241a;--warn:#fbbf24;--warn-soft:#2a2111;--bad:#f87171;--bad-soft:#2c1415;--pin:#fb923c;
  --shadow:none;--av-l:24%;--av-fl:82%;--av-s:35%;color-scheme:dark;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
svg.i{width:16px;height:16px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;vertical-align:-3px}
svg.i.fill{fill:currentColor}
code,.mono{font:12.5px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
time,.num{font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}.small{font-size:12.5px}.ell{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.grow{flex:1}

/* shell */
.app{display:grid;grid-template-columns:244px minmax(0,1fr);min-height:100vh}
.side{background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;padding:12px 10px;overflow-y:auto}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 12px;font-weight:650;font-size:15px;color:var(--fg)}
.brand:hover{text-decoration:none}
.logo{width:26px;height:26px;border-radius:7px;background:var(--accent);color:var(--accent-fg);display:grid;place-items:center;font-weight:750;font-size:14px;flex:none}
.compose{display:flex;align-items:center;justify-content:center;gap:8px;margin:0 2px 12px;padding:8px 12px;border-radius:8px;background:var(--accent);color:var(--accent-fg);font-weight:600}
.compose:hover{text-decoration:none;filter:brightness(1.07)}
.nav{display:flex;flex-direction:column;gap:1px}
.nav-h{display:flex;align-items:center;justify-content:space-between;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);padding:14px 10px 6px}
.nav-h a{color:var(--faint);text-transform:none;letter-spacing:0;font-weight:500}
.nav a{display:flex;align-items:center;gap:10px;padding:5px 10px;border-radius:6px;color:var(--fg2);font-weight:500;min-width:0}
.nav a:hover{background:var(--hover);text-decoration:none}
.nav a.on{background:var(--sel);color:var(--fg)}
.nav a .lbl{flex:1;min-width:0}
.nav a.unread .lbl{font-weight:700;color:var(--fg)}
.nav .cnt{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.nav a.unread .cnt{color:var(--fg);font-weight:650}
.nav details>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:6px;padding:5px 10px;border-radius:6px;color:var(--muted);font-size:12.5px;font-weight:600}
.nav details>summary::-webkit-details-marker{display:none}
.nav details>summary:hover{background:var(--hover)}
.nav details>summary .chev{transition:transform .15s}
.nav details[open]>summary .chev{transform:rotate(90deg)}
.nav details a{padding-left:28px}
.nav .more{padding-left:28px;font-size:12.5px;color:var(--muted)}
.badge{font-size:11px;font-weight:650;min-width:18px;padding:0 6px;border-radius:9px;text-align:center;background:var(--line);color:var(--fg2)}
.badge.crit{background:var(--bad);color:#fff}.badge.warn{background:var(--warn);color:#fff}
.side-foot{margin-top:auto;border-top:1px solid var(--line);padding:12px 6px 0;display:flex;align-items:center;gap:10px}
.side-foot .who{flex:1;min-width:0;font-size:12.5px;line-height:1.3}
.iconbtn{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:6px;border:0;background:transparent;color:var(--muted);cursor:pointer;padding:0}
.iconbtn:hover{background:var(--hover);color:var(--fg)}
.main{min-width:0;display:flex;flex-direction:column}
.top{position:sticky;top:0;z-index:5;background:var(--bg);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:10px 24px;min-height:56px}
.top h1{font-size:17px;font-weight:650;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.search{display:flex;align-items:center;gap:8px;background:var(--side);border:1px solid var(--line);border-radius:8px;padding:0 10px;width:min(420px,100%);color:var(--muted)}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search input{border:0;background:transparent;outline:0;padding:7px 0;width:100%;color:var(--fg);font:inherit}
.content{padding:20px 24px 48px;width:100%}
.narrow{max-width:900px}
.mnav{display:none}
.flash{display:flex;gap:8px;align-items:center;padding:9px 24px;border-bottom:1px solid var(--line);font-size:13px;background:var(--ok-soft);color:var(--ok)}

/* alert strip */
.strip{display:flex;align-items:center;gap:10px;padding:9px 24px;border-bottom:1px solid var(--line);font-size:13px}
.strip.crit{background:var(--bad-soft);color:var(--bad)}.strip.warn{background:var(--warn-soft);color:var(--warn)}
.strip .t{flex:1;color:var(--fg)}.strip a{font-weight:600;color:inherit}

/* tabs and bulk bar */
.tabs{display:flex;gap:4px;padding:8px 24px 0;border-bottom:1px solid var(--line)}
.tabs a{padding:7px 12px;border-bottom:2px solid transparent;color:var(--muted);font-weight:550;margin-bottom:-1px}
.tabs a:hover{color:var(--fg);text-decoration:none}
.tabs a.on{color:var(--fg);border-bottom-color:var(--accent)}
.bulk{position:sticky;top:56px;z-index:4;display:flex;align-items:center;gap:4px;padding:6px 24px 6px 20px;border-bottom:1px solid var(--line2);background:var(--bg);min-height:42px}
.bulk .sel-n{color:var(--muted);font-size:12.5px;margin:0 8px}
.bulk .acts{display:flex;gap:2px}
.bulk[data-n="0"] .acts{opacity:.45;pointer-events:none}

/* message list */
.list{list-style:none;margin:0;padding:0}
.list .group{display:flex;align-items:center;gap:6px;padding:14px 24px 6px 46px;font-size:11.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line2)}
.list .group svg{width:13px;height:13px}
.row{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr);align-items:center;border-bottom:1px solid var(--line2)}
.row:hover{background:var(--hover)}
.row.sel{background:var(--sel)}
.ck{display:grid;place-items:center;height:100%;padding-left:12px;cursor:pointer}
.ck input{width:15px;height:15px;margin:0;accent-color:var(--accent);cursor:pointer}
.main-link{display:grid;grid-template-columns:10px 30px minmax(110px,190px) minmax(0,1fr) auto 76px;align-items:center;gap:12px;padding:0 24px 0 6px;height:44px;color:var(--fg)}
.main-link:hover{text-decoration:none}
.dot{width:8px;height:8px;border-radius:50%;flex:none;background:transparent}
.row.unread .dot{background:var(--unread)}
.row .from{font-weight:500;color:var(--fg2)}
.row.unread .from{font-weight:700;color:var(--fg)}
.row .line{display:flex;gap:6px;min-width:0;align-items:baseline}
.row .subj{font-weight:450;flex:none;max-width:70%}
.row.unread .subj{font-weight:650}
.row .snip{color:var(--muted)}
.row .tags{display:flex;gap:6px;align-items:center;justify-content:flex-end}
.row time{color:var(--muted);font-size:12.5px;text-align:right}
.row.unread time{color:var(--fg);font-weight:600}
.row .hover{position:absolute;right:16px;top:50%;transform:translateY(-50%);display:none;gap:2px;background:var(--hover);padding-left:8px}
.row.sel .hover{background:var(--sel)}
.row:hover .hover{display:flex}
.row .hover button{width:30px;height:30px}
.av{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:650;background:hsl(var(--h) var(--av-s) var(--av-l));color:hsl(var(--h) 45% var(--av-fl));flex:none}
.av.lg{width:40px;height:40px;font-size:15px}
.chip{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;font-weight:550;padding:1px 7px;border-radius:5px;white-space:nowrap;border:1px solid var(--line);color:var(--fg2);background:var(--bg)}
.chip svg.i{width:12px;height:12px;vertical-align:0}
.chip.ok{color:var(--ok);background:var(--ok-soft);border-color:transparent}
.chip.warn{color:var(--warn);background:var(--warn-soft);border-color:transparent}
.chip.bad{color:var(--bad);background:var(--bad-soft);border-color:transparent}
.chip.box{color:var(--muted);font-weight:500}
.pinned{color:var(--pin)}
.mbox{color:var(--muted);font-size:12px;max-width:160px}
.pager{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;color:var(--muted);font-size:13px}
.empty{padding:64px 24px;text-align:center;color:var(--muted)}
.empty b{display:block;color:var(--fg);font-size:15px;margin-bottom:4px}

/* buttons */
.toolbar{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:6px;font:inherit;font-weight:550;font-size:13px;padding:6px 12px;border-radius:7px;border:1px solid var(--line);background:var(--bg);color:var(--fg);cursor:pointer;white-space:nowrap;box-shadow:var(--shadow)}
.btn:hover{background:var(--hover);text-decoration:none}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-fg)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.danger{color:var(--bad)}
.btn.sm{padding:4px 9px;font-size:12.5px}
.btn.ghost{border-color:transparent;box-shadow:none;background:transparent}
.btn.ghost:hover{background:var(--hover)}
.btn.on{color:var(--pin)}
details.pop{position:relative;display:inline-block}
details.pop>summary{list-style:none}
details.pop>summary::-webkit-details-marker{display:none}
details.pop .panel{position:absolute;right:0;top:38px;z-index:20;min-width:280px;background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.16);padding:12px}

/* reading view */
.msg-subj{font-size:21px;font-weight:650;margin:4px 0 14px;line-height:1.3;overflow-wrap:anywhere}
.sender{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}
.sender .who{flex:1;min-width:0}
.sender .name{font-weight:650}
.sender .addr{color:var(--muted);font-weight:400}
.sender time{color:var(--muted);font-size:12.5px;white-space:nowrap}
.notes{display:flex;flex-direction:column;gap:6px;margin:0 0 16px}
.note{display:flex;gap:8px;align-items:center;font-size:13px;padding:8px 12px;border-radius:8px;background:var(--side);color:var(--fg2)}
.note.ok{background:var(--ok-soft);color:var(--ok)}.note.warn{background:var(--warn-soft);color:var(--warn)}.note.bad{background:var(--bad-soft);color:var(--bad)}
.note .t{flex:1;color:var(--fg)}
.body-frame{width:100%;border:0;display:block;min-height:120px;background:#fff}
.body-wrap{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}
.body-text{white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;font-size:14.5px;line-height:1.6;margin:0;padding:4px 0}
.atts{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.att{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:8px;padding:8px 12px;max-width:280px;color:var(--fg)}
.att:hover{background:var(--hover);text-decoration:none}
.att .n{font-weight:550}
.composer{border:1px solid var(--line);border-radius:10px;margin-top:24px;box-shadow:var(--shadow);background:var(--bg)}
.composer .hd{display:flex;gap:10px;align-items:center;padding:8px 14px;border-bottom:1px solid var(--line2);font-size:13px;color:var(--muted);flex-wrap:wrap}
.composer .hd input,.composer .hd select{border:0;background:transparent;color:var(--fg);font:inherit;padding:4px 0;min-width:200px;outline:0;flex:1}
.composer .hd label{display:flex;align-items:center;gap:8px;flex:1;min-width:240px}
.composer .hd label>span{width:52px;color:var(--muted)}
.composer textarea{display:block;width:100%;border:0;outline:0;resize:vertical;min-height:160px;padding:12px 14px;font:inherit;font-size:14.5px;line-height:1.55;background:transparent;color:var(--fg)}
.composer .ft{display:flex;align-items:center;gap:12px;padding:10px 14px;border-top:1px solid var(--line2)}
.thread{margin-top:16px;display:flex;flex-direction:column;gap:6px}
kbd{font:11px ui-monospace,monospace;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:0 4px;color:var(--muted)}

/* settings */
.settings{display:grid;grid-template-columns:200px minmax(0,1fr);gap:28px;align-items:start}
.snav{display:flex;flex-direction:column;gap:1px;position:sticky;top:76px}
.snav a{padding:6px 10px;border-radius:6px;color:var(--fg2);font-weight:500}
.snav a:hover{background:var(--hover);text-decoration:none}
.snav a.on{background:var(--sel);color:var(--fg)}
.lead{color:var(--muted);margin:0 0 20px;max-width:720px}
.lead code,.hint code,.checklist code{white-space:nowrap}
.section{margin:0 0 28px}
.section h2{font-size:14px;font-weight:650;margin:0 0 10px}
.card{border:1px solid var(--line);border-radius:10px;background:var(--bg);box-shadow:var(--shadow)}
.card.pad{padding:16px}
table.t{width:100%;border-collapse:collapse}
table.t th{text-align:left;font-size:12px;font-weight:550;color:var(--muted);padding:9px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
table.t td{padding:9px 14px;border-bottom:1px solid var(--line2);vertical-align:middle}
table.t tr:last-child td{border-bottom:0}
table.t td.act{text-align:right;white-space:nowrap}
table.t td.act form{display:inline}
table.t tr.group td{background:var(--side);font-weight:600;font-size:12.5px;color:var(--fg2)}
table.t tr.dim td{opacity:.55}
.fields{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.fields.cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;gap:12px 16px}
@media (max-width:640px){.fields.cols{grid-template-columns:minmax(0,1fr)}}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field>span{font-size:12.5px;font-weight:550;color:var(--fg2)}
.field>small{font-size:12px;color:var(--muted)}
.stack{display:flex;flex-direction:column;gap:16px;max-width:560px}
.input,select.input,textarea.input{font:inherit;padding:7px 10px;border:1px solid var(--line);border-radius:7px;background:var(--bg);color:var(--fg);min-width:0}
textarea.input{min-height:90px;resize:vertical}
.input:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.inline-form{display:flex;gap:6px;align-items:center}
.inline-form .input{padding:4px 8px;font-size:13px}
.checks{display:flex;gap:14px;flex-wrap:wrap;padding:7px 0}
.checks label{display:flex;gap:6px;align-items:center}
.hint{font-size:12.5px;color:var(--muted);margin:10px 0 0}
.secret{display:flex;gap:8px;align-items:center;margin:10px 0}
.secret code{flex:1;padding:9px 12px;border-radius:7px;background:var(--side);border:1px solid var(--line);user-select:all;overflow-wrap:anywhere}
pre.code{margin:8px 0 0;padding:12px;border-radius:8px;background:var(--side);border:1px solid var(--line);overflow:auto;font:12.5px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.checklist{list-style:none;margin:0;padding:0}
.checklist li{display:flex;gap:12px;align-items:center;padding:11px 16px;border-bottom:1px solid var(--line2)}
.checklist li:last-child{border-bottom:0}
.checklist .k{flex:1}
.checklist .v{color:var(--muted);font-size:13px;text-align:right}
.checklist .tgt{color:var(--faint);font-size:12px;width:150px;text-align:right}
.sdot{width:8px;height:8px;border-radius:50%;flex:none;background:var(--faint)}
.sdot.ok{background:var(--ok)}.sdot.warn{background:var(--warn)}.sdot.bad{background:var(--bad)}
details.alert{border-bottom:1px solid var(--line2)}
details.alert:last-child{border-bottom:0}
details.alert summary{display:flex;gap:12px;align-items:center;padding:12px 16px;cursor:pointer;list-style:none}
details.alert summary::-webkit-details-marker{display:none}
details.alert summary .t{flex:1;min-width:0}
details.alert .b{padding:0 16px 14px 36px}
details.alert pre{white-space:pre-wrap;overflow-wrap:anywhere;margin:0 0 10px;font-family:inherit;font-size:13.5px;line-height:1.55;color:var(--fg2)}

/* sign-in */
.auth{min-height:100vh;display:grid;place-items:center;background:var(--side);padding:24px}
.auth .card{width:100%;max-width:380px;padding:28px}
.auth h1{font-size:19px;margin:14px 0 4px}
.auth .input{width:100%}
.auth .btn{width:100%;justify-content:center;padding:9px 12px}
.or{display:flex;align-items:center;gap:10px;color:var(--faint);font-size:12px;margin:14px 0}
.or:before,.or:after{content:"";flex:1;border-top:1px solid var(--line)}

/* small screens */
@media (max-width:900px){
  .app{grid-template-columns:1fr}
  .side{display:none}
  .mnav{display:block;position:relative}
  .mnav summary{list-style:none;cursor:pointer}
  .mnav summary::-webkit-details-marker{display:none}
  .mnav .menu{position:absolute;left:0;top:38px;z-index:20;width:270px;max-height:80vh;overflow-y:auto;background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.18);padding:8px}
  .top{padding:8px 12px;gap:8px;flex-wrap:wrap}
  .top .search{order:9;width:100%}
  .content{padding:16px 14px 40px}
  .strip,.flash{padding:8px 14px}
  .tabs{padding:6px 10px 0}
  .bulk{top:auto;padding:6px 10px}
  .ck{padding-left:6px}
  .main-link{grid-template-columns:8px 30px minmax(0,1fr) auto;grid-template-areas:"dot av from time" "dot av line line" "dot av tags tags";height:auto;padding:10px 14px 10px 4px;row-gap:2px;column-gap:10px;align-items:start}
  .main-link .dot{grid-area:dot;margin-top:12px}.main-link .av{grid-area:av;margin-top:2px}.row .from{grid-area:from}
  .row .line{grid-area:line;flex-direction:column;gap:0;align-items:stretch}.row .subj,.row .snip{max-width:100%}
  .row .tags{grid-area:tags;justify-content:flex-start}.row .tags .chip:not(.bad):not(.warn):not(.pin-chip){display:none}.row .tags:not(:has(.bad,.warn,.pin-chip)){display:none}
  .row time{grid-area:time}
  .row .hover{display:none!important}
  .hide-sm{display:none}
  .sender{flex-wrap:wrap}.sender time{flex-basis:100%;padding-left:52px;margin-top:-6px}
  .settings{grid-template-columns:1fr;gap:12px}
  .snav{position:static;flex-direction:row;flex-wrap:wrap}
  table.t th,table.t td{padding:8px 10px}
  .pager{padding:12px 14px}
  .checklist .tgt{display:none}
}