/* LitWebTech Hub. One design system: gold on deep navy, 4px spacing grid, three layouts
   (phone: bottom tabs; tablet: icon rail; desktop: sidebar and a two-pane inbox). */
:root{
  --bg:#080b11;--surface:#0e131c;--surface2:#141b27;--surface3:#1b2433;--line:#232e40;--line2:#2f3d54;
  --ink:#eef1f6;--ink2:#a3afc2;--ink3:#74819a;
  --gold:#f2c75c;--gold-hi:#ffe7a3;--gold-deep:#dba93a;--gold-soft:rgba(242,199,92,.12);
  --ok:#4cc38a;--warn:#f0a64a;--bad:#f07a7a;
  --r:14px;--r-sm:10px;--shadow:0 10px 30px rgba(0,0,0,.35);
  --font:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 var(--font);-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--gold);text-underline-offset:3px}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2{letter-spacing:-.01em;line-height:1.25}
.muted{color:var(--ink2)}.grow{flex:1}.min0{min-width:0}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:6px}

/* buttons and fields */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--gold-hi),var(--gold) 45%,var(--gold-deep));color:#1b1404;border:0;border-radius:var(--r-sm);padding:10px 18px;font-weight:650;cursor:pointer;min-height:44px;text-decoration:none;transition:filter .15s,transform .05s}
.btn:hover{filter:brightness(1.07)}.btn:active{transform:translateY(1px)}
.btn.ghost{background:var(--surface2);color:var(--ink);border:1px solid var(--line2)}.btn.ghost:hover{background:var(--surface3);filter:none}
.btn.danger{background:transparent;color:var(--bad);border:1px solid rgba(240,122,122,.5)}.btn.danger:hover{background:rgba(240,122,122,.1);filter:none}
.btn.small{padding:6px 12px;min-height:36px;font-size:13.5px;font-weight:600}
input,textarea,select{width:100%;background:var(--surface2);border:1px solid var(--line2);border-radius:var(--r-sm);padding:10px 12px;min-height:44px;font-size:16px;transition:border-color .15s}
input:hover,textarea:hover,select:hover{border-color:#40516e}
input:focus,textarea:focus,select:focus{outline:0;border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-soft)}
input[type=checkbox]{width:20px;min-height:20px;height:20px;padding:0;accent-color:var(--gold)}
label{display:block;margin:14px 0 0;font-size:13px;font-weight:550;color:var(--ink2)}
label input,label textarea,label select{margin-top:6px;color:var(--ink);font-weight:400}
label.row{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:400}
.err{background:rgba(240,122,122,.1);border:1px solid rgba(240,122,122,.5);padding:10px 12px;border-radius:var(--r-sm);font-size:14px}

/* sign-in */
.gate{display:grid;place-items:center;padding:20px;min-height:100dvh;background:radial-gradient(900px 500px at 50% -10%,rgba(242,199,92,.10),transparent 60%),var(--bg)}
.gate .card{width:min(420px,100%);background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:32px 28px;box-shadow:var(--shadow)}
.gate h1{margin:14px 0 2px;font-size:24px}.gate .btn{width:100%;margin-top:20px}.gate img{border-radius:12px}

/* shell */
.app{display:grid;height:100dvh;grid-template-rows:1fr auto;grid-template-areas:"main" "nav"}
.main{grid-area:main;display:flex;flex-direction:column;min-height:0;min-width:0}
.top{display:flex;align-items:center;gap:8px;padding:8px 12px 8px 16px;padding-top:calc(8px + env(safe-area-inset-top));background:var(--surface);border-bottom:1px solid var(--line);min-height:60px}
.top strong{font-size:18px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon{display:inline-grid;place-items:center;background:transparent;border:0;font-size:19px;min-width:44px;min-height:44px;border-radius:var(--r-sm);cursor:pointer;position:relative;color:var(--ink2)}
.icon:hover{background:var(--surface2);color:var(--ink)}
.icon i,.tabs i{position:absolute;background:var(--bad);color:#fff;font:700 11px/18px var(--font);min-width:18px;height:18px;border-radius:9px;text-align:center;padding:0 5px;font-style:normal}
.icon i{top:3px;right:1px}
.avail{display:flex;align-items:center;gap:8px;margin:0;font-size:13px;font-weight:550;color:var(--ink2);padding:6px 10px;border:1px solid var(--line2);border-radius:22px;cursor:pointer}
.avail:has(input:checked){color:var(--ok);border-color:rgba(76,195,138,.5)}
.avail input{appearance:none;width:10px;min-height:10px;height:10px;border-radius:50%;background:var(--ink3);border:0;margin:0}.avail input:checked{background:var(--ok);box-shadow:0 0 0 3px rgba(76,195,138,.2)}
#screen{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;min-height:0}
#screen>.panel,#screen>.list,#screen>.info{width:100%;max-width:820px;margin-left:auto;margin-right:auto}

/* navigation: bottom tabs on a phone */
.tabs{grid-area:nav;display:flex;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.tabs .brand{display:none}
.tabs a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 4px 9px;color:var(--ink3);text-decoration:none;font-size:11.5px;font-weight:550;position:relative}
.tabs a.on{color:var(--gold)}.tabs a:hover{color:var(--ink)}
.tabs a i{top:3px;left:calc(50% + 6px)}

/* lists */
.list{list-style:none;margin:0 0 4px;padding:0}
.list li{display:flex;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;margin-bottom:8px;cursor:pointer;transition:border-color .15s,background .15s}
.list li:hover{border-color:var(--line2);background:var(--surface2)}
.list li.on{border-color:var(--gold);background:var(--gold-soft)}
.list li.wait{border-color:var(--gold-deep)}
.list .line{display:flex;gap:8px;align-items:center;min-width:0}
.list .who{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list .last{color:var(--ink2);font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:1px}
.list .when{font-size:12px;white-space:nowrap}
.av{flex:none;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--surface3);border:1px solid var(--line2);font-weight:650;font-size:13.5px;color:var(--ink2);position:relative}
.av.here::after{content:"";position:absolute;right:-1px;bottom:-1px;width:11px;height:11px;border-radius:50%;background:var(--ok);border:2px solid var(--surface)}
.pill{font-size:11.5px;font-weight:600;border:1px solid var(--line2);border-radius:20px;padding:2px 9px;color:var(--ink2);white-space:nowrap}
.pill.gold{border-color:var(--gold);color:var(--gold);background:var(--gold-soft)}.pill.n{background:var(--bad);border-color:var(--bad);color:#fff}
.empty{margin:auto;text-align:center;color:var(--ink2);max-width:340px;padding:24px}.empty p:first-child{color:var(--ink);font-weight:600;font-size:16px;margin-bottom:6px}
.info{font-size:13px;color:var(--ink2);margin:0 0 10px}

/* conversation */
.chead{border-bottom:1px solid var(--line);padding-bottom:4px;margin-bottom:10px}
.bar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:8px 0}
.thread{flex:1;overflow:auto;display:flex;flex-direction:column;gap:6px;padding:4px 2px 10px;min-height:120px}
.msg{max-width:min(78%,560px);padding:9px 13px;border-radius:16px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14.5px;line-height:1.45}
.msg.visitor{align-self:flex-start;background:var(--surface2);border:1px solid var(--line2);border-bottom-left-radius:5px}
.msg.bot{align-self:flex-end;background:transparent;border:1px dashed var(--line2);color:#c5cddb;border-bottom-right-radius:5px}
.msg.admin{align-self:flex-end;background:#3b2f10;border:1px solid var(--gold-deep);border-bottom-right-radius:5px}
.msg.system{align-self:center;font-size:12.5px;color:var(--ink3);padding:4px 10px}
.msg small{display:block;font-size:11px;color:var(--ink3);margin-top:3px}
.file{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);margin-bottom:4px}
.file.img img{display:block;max-width:100%;max-height:240px;border-radius:10px}
.file .fi{flex:none;width:42px;height:42px;border-radius:10px;display:grid;place-items:center;background:var(--gold-soft);color:var(--gold);font:700 11px var(--font);border:1px solid rgba(242,199,92,.35)}
.file b{display:block;font-weight:600;font-size:14px;overflow-wrap:anywhere}.file small{margin:0}
.compose{display:flex;gap:8px;align-items:flex-end;padding-top:10px;border-top:1px solid var(--line)}
.compose textarea{min-height:44px;max-height:140px;resize:none;border-radius:22px;padding:10px 16px}
.compose .btn{border-radius:22px}.compose .clip{flex:none;border:1px solid var(--line2);border-radius:50%}

/* mail */
.mhead{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}
.mhead .bar{margin:0}.mbox{font-weight:600}
.fchips{display:flex;gap:6px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.fchip{flex:none;display:inline-flex;align-items:center;gap:6px;background:var(--surface2);border:1px solid var(--line2);color:var(--ink2);border-radius:20px;padding:6px 12px;font-size:13px;font-weight:550;cursor:pointer;min-height:36px}
.fchip.on{background:var(--gold-soft);border-color:var(--gold);color:var(--gold)}.fchip b{background:var(--gold);color:#1b1404;border-radius:10px;padding:0 6px;font-size:11.5px}
.list.mail li{padding:10px 12px;gap:10px}.list.mail li.unread .who,.list.mail li.unread .last{color:var(--ink);font-weight:700}
.list.mail li.unread{border-left:3px solid var(--gold)}
.star{background:transparent;border:0;color:var(--ink3);font-size:20px;cursor:pointer;min-width:36px;min-height:36px;border-radius:8px}.star.on{color:var(--gold)}
.pager{justify-content:center}
.msubject{font-size:20px;margin:6px 0 4px;overflow-wrap:anywhere}
.mmeta{font-size:13.5px;margin:0 0 10px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.mbody{flex:1;width:100%;min-height:340px;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.file.att{border:1px solid var(--line2);border-radius:12px;padding:8px 12px 8px 8px;margin:0;background:var(--surface2)}.file.att:hover{border-color:var(--gold)}
.file.att.blocked{opacity:.7;border-style:dashed}.file.att.blocked .fi{background:rgba(240,122,122,.12);color:var(--bad);border-color:rgba(240,122,122,.4)}
.composer{max-width:820px;width:100%;margin:0 auto}.mcompose{min-height:220px;resize:vertical;line-height:1.5}
.linkish{background:none;border:0;color:var(--gold);padding:8px 0 0;cursor:pointer;font-size:13px}
input[type=file]{padding:8px;font-size:14px}
#cpane{overflow:auto}

.sect{font-size:14px;color:var(--ink2);text-transform:uppercase;letter-spacing:.06em;margin:14px auto 8px;width:100%;max-width:820px}
.cbody{white-space:pre-wrap;overflow-wrap:anywhere;margin:0 0 6px;background:var(--surface2);border:1px solid var(--line);border-radius:10px;padding:10px 12px}
#screen>.sect{width:100%}
@media(max-width:420px){.tabs a{font-size:10.5px}}

.trail{list-style:none;margin:6px 0 0;padding:0;font-size:13.5px;max-height:260px;overflow:auto}.trail li{padding:5px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px}.tile{background:var(--surface2);border:1px solid var(--line);border-radius:12px;padding:12px}.tile b{display:block;font-size:24px;color:var(--gold);line-height:1.1}.tile span{font-size:12.5px;color:var(--ink2)}
code{background:var(--surface2);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:12.5px;overflow-wrap:anywhere;user-select:all}
#cbody{min-height:60px}

/* panels */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:12px}
.panel h2{margin:0 0 6px;font-size:16.5px;font-weight:650}
dl{margin:8px 0 0;display:grid;grid-template-columns:max-content 1fr;gap:6px 16px;font-size:14px}dt{color:var(--ink3)}dd{margin:0;overflow-wrap:anywhere;white-space:pre-wrap}
#toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--surface3);border:1px solid var(--gold);padding:10px 18px;border-radius:24px;max-width:90%;z-index:9;box-shadow:var(--shadow);font-size:14px}

/* tablet: an icon rail on the left */
@media(min-width:640px){
  .app{grid-template-rows:1fr;grid-template-columns:76px 1fr;grid-template-areas:"nav main"}
  .tabs{flex-direction:column;border-top:0;border-right:1px solid var(--line);padding:12px 8px;gap:4px}
  .tabs .brand{display:grid;place-items:center;margin-bottom:14px}.tabs .brand img{border-radius:9px}.tabs .brand span{display:none}
  .tabs a{flex:none;padding:10px 4px;border-radius:var(--r-sm)}.tabs a.on{background:var(--gold-soft)}.tabs a:hover{background:var(--surface2)}
  #screen{padding:20px 24px}#toast{bottom:28px}
}
/* desktop: a full sidebar, and the inbox in two panes */
@media(min-width:1024px){
  .app{grid-template-columns:232px 1fr}
  .tabs{padding:16px 12px}
  .tabs .brand{display:flex;place-items:unset;align-items:center;gap:10px;padding:4px 8px 14px;margin-bottom:8px;border-bottom:1px solid var(--line)}
  .tabs .brand span{display:block;line-height:1.15}.tabs .brand b{display:block;font-size:15px}.tabs .brand small{color:var(--gold);font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}
  .tabs a{flex-direction:row;gap:12px;padding:10px 12px;font-size:14.5px}
  .tabs a i{position:static;margin-left:auto}
  .top{padding:10px 24px;min-height:64px}.top strong{font-size:20px}
  #screen.split{display:grid;grid-template-columns:minmax(300px,360px) 1fr;gap:0;padding:0;overflow:hidden}
  #clist{overflow:auto;padding:16px;border-right:1px solid var(--line)}
  #cpane{display:flex;flex-direction:column;min-height:0;padding:16px 24px}
  .msg{font-size:15px}
}
@media(prefers-reduced-motion:no-preference){.msg{animation:in .18s ease-out}@keyframes in{from{opacity:0;transform:translateY(4px)}}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}