/* TeamHub UI — BrandLift Global design system.
   Light by default, dark via [data-theme="dark"]. Indigo→violet gradient brand. */
:root{
  /* BrandLift light palette */
  --bg:#f5f7fc; --bg2:#eef1fa; --panel:#ffffff; --panel2:#f4f6fd; --card:#ffffff;
  --ink:#0f1729; --muted:#5b6b8c; --faint:#94a3c0;
  --border:#e6e9f4; --accent:#4F46E5; --accent2:#7C3AED;
  --grad:linear-gradient(120deg,#4F46E5 0%,#7C3AED 100%);
  --grad-soft:linear-gradient(120deg,rgba(79,70,229,.12),rgba(124,58,237,.12));
  --ring:rgba(79,70,229,.35);
  --ok:#10b981; --warn:#f59e0b; --err:#ef4444;
  --urgent:#ef4444; --high:#f59e0b; --normal:#3b82f6; --low:#94a3b8;
  --shadow:0 10px 34px rgba(15,23,42,.10); --shadow-sm:0 2px 10px rgba(15,23,42,.06);
  --font:"Inter",system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-brand:"Manrope",var(--font);
}
[data-theme="dark"]{
  --bg:#0b1020; --bg2:#0e1428; --panel:#121a30; --panel2:#18213d; --card:#141d36;
  --ink:#e8ecf7; --muted:#96a3c2; --faint:#65748f;
  --border:#26325180; --accent:#6366f1; --accent2:#9d7cff;
  --grad:linear-gradient(120deg,#6366f1 0%,#9d7cff 100%);
  --grad-soft:linear-gradient(120deg,rgba(99,102,241,.18),rgba(157,124,255,.18));
  --ring:rgba(129,140,248,.45);
  --shadow:0 12px 40px rgba(0,0,0,.45); --shadow-sm:0 2px 12px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font:14px/1.55 var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
.boot{display:flex;height:100vh;align-items:center;justify-content:center;color:var(--muted)}
a{color:var(--accent);text-decoration:none}
button{font:inherit;cursor:pointer}
input,textarea,select{font:inherit}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:var(--faint)}
code{background:var(--panel2);padding:1px 6px;border-radius:5px;font-size:.9em}

/* ---------- brand wordmark ---------- */
.wordmark{font-family:var(--font-brand);font-weight:800;letter-spacing:-.02em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.logo-mark{width:26px;height:26px;border-radius:8px;background:var(--grad);display:inline-flex;
  align-items:center;justify-content:center;color:#fff;font-size:15px;flex:none;box-shadow:0 4px 12px var(--ring)}

/* ---------- buttons / forms ---------- */
.btn{background:var(--grad);color:#fff;border:0;padding:9px 16px;border-radius:10px;font-weight:600;font-size:13px;
  display:inline-flex;align-items:center;gap:6px;box-shadow:0 4px 14px var(--ring);transition:transform .12s,box-shadow .12s,filter .12s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 8px 22px var(--ring)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--border);box-shadow:none}
.btn.ghost:hover{background:var(--panel2);border-color:var(--accent);filter:none;transform:none}
.btn.sm{padding:6px 11px;font-size:12px;border-radius:8px}
.btn.danger{background:var(--err);box-shadow:none}
.btn.danger:hover{filter:brightness(1.06)}
.btn.block{width:100%;justify-content:center}
.btn[disabled]{opacity:.55;pointer-events:none}
.field{display:block;margin:12px 0}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px;font-weight:500}
.input,input[type=text],input[type=password],input[type=email],input[type=date],input[type=number],textarea,select{
  width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg2);color:var(--ink);outline:none;transition:border-color .12s,box-shadow .12s}
.input:focus,input:focus,textarea:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}
textarea{resize:vertical;min-height:80px}
.row{display:flex;gap:10px}
.row>*{flex:1}
.muted{color:var(--muted)}
.small{font-size:12px}
.pill{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;border-radius:999px;font-size:11px;font-weight:600}

/* ---------- login ---------- */
.login-wrap{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:24px;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(79,70,229,.22), transparent 60%),
    radial-gradient(800px 500px at 100% 110%, rgba(124,58,237,.20), transparent 55%),
    var(--bg)}
.login-card{width:100%;max-width:410px;background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:36px;box-shadow:var(--shadow)}
.login-card .brand-row{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.login-card .logo-mark{width:38px;height:38px;border-radius:11px;font-size:20px}
.login-card h1{margin:0;font-size:26px;font-family:var(--font-brand);letter-spacing:-.02em}
.login-card .sub{color:var(--muted);margin:2px 0 22px}
.login-hint{margin-top:18px;font-size:12px;color:var(--muted);text-align:center;line-height:1.7;
  background:var(--grad-soft);border:1px solid var(--border);border-radius:12px;padding:10px 12px}

/* ---------- app shell ---------- */
.shell{display:grid;grid-template-columns:238px 1fr;grid-template-rows:58px 1fr;height:100vh;grid-template-areas:"brand top" "nav main"}
.brand{grid-area:brand;display:flex;align-items:center;gap:10px;padding:0 16px;font-weight:800;font-size:17px;
  background:var(--panel);border-right:1px solid var(--border);border-bottom:1px solid var(--border)}
.topbar{grid-area:top;display:flex;align-items:center;gap:12px;padding:0 16px;background:var(--panel);border-bottom:1px solid var(--border)}
.topbar .search{flex:1;max-width:480px;position:relative}
.topbar .search input{padding-left:34px;border-radius:999px;background:var(--bg2)}
.topbar .search .ic{position:absolute;left:12px;top:9px;color:var(--muted)}
.nav{grid-area:nav;background:var(--panel);border-right:1px solid var(--border);padding:14px 12px;overflow-y:auto}
.nav .navitem{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;color:var(--muted);font-weight:600;cursor:pointer;margin-bottom:2px;transition:background .12s,color .12s}
.nav .navitem:hover{background:var(--panel2);color:var(--ink)}
.nav .navitem.active{background:var(--grad);color:#fff;box-shadow:0 6px 16px var(--ring)}
.nav .navitem .badge{margin-left:auto;background:var(--err);color:#fff;border-radius:999px;font-size:10px;padding:1px 6px}
.nav .navsec{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);margin:18px 8px 6px;font-weight:700}
.main{grid-area:main;overflow:auto;padding:24px;background:var(--bg)}
.iconbtn{width:37px;height:37px;border-radius:10px;border:1px solid transparent;background:transparent;color:var(--muted);display:flex;align-items:center;justify-content:center;position:relative;transition:background .12s,color .12s}
.iconbtn:hover{background:var(--panel2);color:var(--ink)}
.iconbtn .dot{position:absolute;top:6px;right:6px;width:8px;height:8px;background:var(--err);border-radius:50%}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--grad);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:none}
.avatar.lg{width:46px;height:46px;font-size:16px}
.avatar.sm{width:22px;height:22px;font-size:10px}

/* ---------- headings ---------- */
.page-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.page-head h2{margin:0;font-size:23px;font-family:var(--font-brand);letter-spacing:-.02em}
.spacer{flex:1}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:var(--shadow-sm)}
.grid{display:grid;gap:14px}
.stat{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.stat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad)}
.stat .n{font-size:28px;font-weight:800;font-family:var(--font-brand)}
.stat .l{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em}

/* ---------- kanban board ---------- */
.board{display:flex;gap:14px;align-items:flex-start;overflow-x:auto;padding-bottom:10px}
.col{background:var(--panel);border:1px solid var(--border);border-radius:16px;width:290px;flex:none;display:flex;flex-direction:column;max-height:calc(100vh - 190px)}
.col-h{display:flex;align-items:center;gap:8px;padding:12px 14px;font-weight:700;border-bottom:1px solid var(--border)}
.col-h .cnt{margin-left:auto;color:var(--muted);font-size:12px;background:var(--bg2);padding:1px 8px;border-radius:999px}
.col-body{padding:10px;overflow-y:auto;flex:1;min-height:40px}
.col-body.drag-over{background:var(--grad-soft);outline:2px dashed var(--accent);outline-offset:-6px;border-radius:12px}
.tcard{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:11px;margin-bottom:9px;cursor:pointer;transition:border-color .12s,box-shadow .12s,transform .12s}
.tcard:hover{border-color:var(--accent);box-shadow:var(--shadow-sm);transform:translateY(-1px)}
.tcard.dragging{opacity:.5}
.tcard .title{font-weight:600;margin-bottom:8px}
.tcard .meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tcard .assignees{margin-left:auto;display:flex}
.tcard .assignees .avatar{margin-left:-6px;border:2px solid var(--card)}
.prio{width:8px;height:8px;border-radius:50%}
.prio.urgent{background:var(--urgent)} .prio.high{background:var(--high)} .prio.normal{background:var(--normal)} .prio.low{background:var(--low)}
.tag{font-size:10px;padding:1px 7px;border-radius:5px;color:#fff}
.due{font-size:11px;color:var(--muted)} .due.overdue{color:var(--err);font-weight:700}

/* ---------- list view ---------- */
table.list{width:100%;border-collapse:collapse}
table.list th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:8px 10px;border-bottom:1px solid var(--border)}
table.list td{padding:9px 10px;border-bottom:1px solid var(--border)}
table.list tr:hover td{background:var(--panel2);cursor:pointer}
.status-badge{font-size:11px;font-weight:700;padding:2px 9px;border-radius:6px;background:var(--bg2);color:var(--muted)}

/* ---------- chat ---------- */
.chat{display:grid;grid-template-columns:230px 1fr;height:calc(100vh - 100px);border:1px solid var(--border);border-radius:16px;overflow:hidden;background:var(--panel);box-shadow:var(--shadow-sm)}
.chan-list{border-right:1px solid var(--border);overflow-y:auto;padding:10px}
.chan{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:9px;cursor:pointer;color:var(--muted);font-weight:600}
.chan:hover{background:var(--panel2);color:var(--ink)}
.chan.active{background:var(--grad);color:#fff}
.chan .unread{margin-left:auto;background:var(--err);color:#fff;font-size:10px;border-radius:999px;padding:1px 6px}
.chat-main{display:flex;flex-direction:column;min-width:0;position:relative}
.chat-head{padding:12px 16px;border-bottom:1px solid var(--border);font-weight:700;display:flex;align-items:center;gap:8px}
.msgs{flex:1;overflow-y:auto;padding:16px;background:var(--bg)}
.msg{display:flex;gap:10px;margin-bottom:14px}
.msg .body{min-width:0}
.msg .head{display:flex;align-items:baseline;gap:8px}
.msg .who{font-weight:700}
.msg .time{font-size:11px;color:var(--faint)}
.msg .text{white-space:pre-wrap;word-wrap:break-word}
.msg .react{margin-top:4px;display:flex;gap:5px;flex-wrap:wrap}
.msg .react .r{background:var(--panel2);border:1px solid var(--border);border-radius:999px;padding:1px 8px;font-size:12px;cursor:pointer}
.msg .actions{opacity:0;display:flex;gap:4px}
.msg:hover .actions{opacity:1}
.composer{border-top:1px solid var(--border);padding:12px;display:flex;gap:10px;background:var(--panel);align-items:flex-end}
.composer textarea{min-height:44px;max-height:140px}
.composer .attach-btn{width:40px;height:40px;flex:none;border-radius:10px;border:1px solid var(--border);background:var(--bg2);color:var(--muted);display:flex;align-items:center;justify-content:center;font-size:18px}
.composer .attach-btn:hover{color:var(--accent);border-color:var(--accent)}
.composer-wrap{border-top:1px solid var(--border);background:var(--panel)}
.composer-wrap .composer{border-top:0}

/* ---------- attachments ---------- */
.att-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.att-chip{display:inline-flex;align-items:center;gap:8px;background:var(--panel2);border:1px solid var(--border);border-radius:10px;padding:7px 10px;max-width:260px;text-decoration:none;color:var(--ink);transition:border-color .12s}
.att-chip:hover{border-color:var(--accent)}
.att-chip .fi{width:30px;height:30px;border-radius:7px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;font-size:15px;flex:none}
.att-chip .an{font-weight:600;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.att-chip .az{font-size:11px;color:var(--muted)}
.att-img{max-width:280px;max-height:220px;border-radius:12px;border:1px solid var(--border);cursor:zoom-in;display:block}
.pending-bar{display:flex;flex-wrap:wrap;gap:8px;padding:10px 12px 0}
.pending{display:inline-flex;align-items:center;gap:7px;background:var(--grad-soft);border:1px solid var(--border);border-radius:9px;padding:5px 9px;font-size:12px}
.pending .rm{cursor:pointer;color:var(--muted);font-weight:700}
.pending .rm:hover{color:var(--err)}
.dropzone-hint{position:absolute;inset:0;display:none;align-items:center;justify-content:center;flex-direction:column;gap:8px;
  background:var(--grad-soft);border:2px dashed var(--accent);border-radius:16px;color:var(--accent);font-weight:700;z-index:5;pointer-events:none}
.chat-main.dragging .dropzone-hint{display:flex}

/* ---------- files library ---------- */
.file-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}
.file-card{background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:border-color .12s,transform .12s,box-shadow .12s}
.file-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
.file-card .thumb{height:120px;background:var(--panel2);display:flex;align-items:center;justify-content:center;font-size:38px;overflow:hidden}
.file-card .thumb img{width:100%;height:100%;object-fit:cover}
.file-card .fc-body{padding:12px}
.file-card .fc-name{font-weight:600;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-card .fc-meta{color:var(--muted);font-size:11px;margin-top:3px}
.file-card .fc-foot{display:flex;align-items:center;gap:6px;padding:10px 12px;border-top:1px solid var(--border)}
.file-card .fc-foot .spacer{flex:1}
.big-dropzone{border:2px dashed var(--border);border-radius:16px;padding:26px;text-align:center;color:var(--muted);background:var(--panel);transition:border-color .12s,background .12s;cursor:pointer}
.big-dropzone:hover,.big-dropzone.over{border-color:var(--accent);background:var(--grad-soft);color:var(--accent)}
.big-dropzone .dz-ic{font-size:30px}

/* ---------- modal ---------- */
.overlay{position:fixed;inset:0;background:rgba(9,12,26,.55);backdrop-filter:blur(3px);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;z-index:100;overflow-y:auto}
.modal{background:var(--panel);border:1px solid var(--border);border-radius:18px;width:100%;max-width:600px;box-shadow:var(--shadow)}
.modal.lg{max-width:840px}
.modal-h{display:flex;align-items:center;gap:10px;padding:16px 20px;border-bottom:1px solid var(--border)}
.modal-h h3{margin:0;flex:1;font-size:17px;font-family:var(--font-brand)}
.modal-b{padding:20px}
.modal-f{padding:14px 20px;border-top:1px solid var(--border);display:flex;gap:10px;justify-content:flex-end}
.x{background:transparent;border:0;color:var(--muted);font-size:20px;line-height:1}
.x:hover{color:var(--ink)}
.lightbox{position:fixed;inset:0;background:rgba(5,7,16,.86);display:flex;align-items:center;justify-content:center;z-index:300;padding:30px;cursor:zoom-out}
.lightbox img{max-width:95%;max-height:95%;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.6)}

/* ---------- misc ---------- */
.empty{text-align:center;color:var(--muted);padding:50px 20px}
.empty .em{font-size:40px}
.toast-wrap{position:fixed;bottom:20px;right:20px;z-index:400;display:flex;flex-direction:column;gap:8px}
.toast{background:var(--card);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:11px;padding:12px 16px;box-shadow:var(--shadow);min-width:220px}
.toast.err{border-left-color:var(--err)} .toast.ok{border-left-color:var(--ok)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px;flex-wrap:wrap}
.tabs .tab{padding:9px 14px;color:var(--muted);font-weight:600;border-bottom:2px solid transparent;cursor:pointer}
.tabs .tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.dropdown{position:absolute;right:0;top:44px;background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);min-width:260px;z-index:120;overflow:hidden}
.dropdown .item{padding:11px 14px;border-bottom:1px solid var(--border);cursor:pointer}
.dropdown .item:hover{background:var(--panel2)}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel2);border:1px solid var(--border);border-radius:999px;padding:3px 10px;font-size:12px;margin:2px}
.mention{color:var(--accent);font-weight:600;background:var(--grad-soft);padding:0 4px;border-radius:4px}
.seg{display:inline-flex;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.seg button{background:transparent;border:0;padding:7px 12px;color:var(--muted);font-weight:600}
.seg button.active{background:var(--grad);color:#fff}
.linkish{cursor:pointer;color:var(--accent)}
.hide{display:none!important}

@media(max-width:820px){
  .shell{grid-template-columns:1fr;grid-template-rows:58px auto 1fr;grid-template-areas:"brand" "top" "main"}
  .nav{position:fixed;left:0;top:0;bottom:0;width:238px;z-index:90;transform:translateX(-100%);transition:transform .2s;grid-area:unset;box-shadow:var(--shadow)}
  .nav.open{transform:none}
  .brand .menu-toggle{display:inline-flex}
  .chat{grid-template-columns:1fr}
  .chan-list.hide-mobile{display:none}
}
.menu-toggle{display:none}