:root{
    --bg:#f5f6f8; --surface:#ffffff; --surface-2:#fafbfc; --border:#e5e7eb;
    --text:#1b1f24; --muted:#6b7280; --muted-2:#9aa1ab;
    --primary:#4f46e5; --primary-soft:#eef0fe;
    --g1:#4f46e5; --g2:#0d9488; --g3:#d97706; --g4:#db2777; --org:#475569;
    --radius:12px; --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.05);
    --shadow-lg:0 10px 30px rgba(16,24,40,.18);
  }
  *{box-sizing:border-box}
  html,body{margin:0;padding:0}
  body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    background:var(--bg); color:var(--text); -webkit-font-smoothing:antialiased; font-size:14px; line-height:1.45;}
  button{font-family:inherit;cursor:pointer}
  a{color:var(--primary);text-decoration:none}
  .hidden{display:none !important}

  /* ---------- Login ---------- */
  #login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
    background:radial-gradient(1200px 600px at 70% -10%, #e9ebff 0%, transparent 55%), var(--bg);}
  .login-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--border);
    border-radius:16px;box-shadow:var(--shadow-lg);padding:28px}
  .brand{display:flex;align-items:center;gap:10px;margin-bottom:6px}
  .logo{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,#6366f1,#4f46e5);
    display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px}
  .brand h1{font-size:19px;margin:0;font-weight:700}
  .login-card p.sub{color:var(--muted);margin:2px 0 22px}
  label.fld{display:block;font-weight:600;font-size:12.5px;color:#374151;margin:14px 0 6px}
  input[type=text],input[type=email],input[type=date],select{
    width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px;background:#fff;color:var(--text)}
  input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--border);
    background:#fff;color:var(--text);padding:9px 14px;border-radius:10px;font-weight:600;font-size:13.5px}
  .btn:hover{background:var(--surface-2)}
  .btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
  .btn.primary:hover{filter:brightness(1.05)}
  .btn.block{width:100%;margin-top:18px;padding:11px}
  .btn.sm{padding:6px 10px;font-size:12.5px;border-radius:8px}
  .btn.ghost{border-color:transparent;background:transparent}
  .hint{background:var(--surface-2);border:1px dashed var(--border);border-radius:10px;padding:10px 12px;
    color:var(--muted);font-size:12.5px;margin-top:16px}
  .otp-row{display:flex;gap:8px;justify-content:space-between}
  .otp-row input{text-align:center;font-size:20px;letter-spacing:2px;font-weight:700;padding:12px 0}

  /* ---------- Shell ---------- */
  .app{display:flex;min-height:100vh}
  .sidebar{width:236px;flex:0 0 236px;background:var(--surface);border-right:1px solid var(--border);
    display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
  .side-brand{display:flex;align-items:center;gap:10px;padding:16px 16px 12px}
  .side-brand .logo{width:30px;height:30px;font-size:16px;border-radius:8px}
  .side-brand h1{font-size:16px;margin:0}
  .pill{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--primary);
    background:var(--primary-soft);padding:2px 7px;border-radius:999px}
  nav.menu{padding:8px;display:flex;flex-direction:column;gap:2px;overflow:auto}
  .nav-item{display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:9px;color:#3a4150;
    font-weight:600;font-size:13.5px;border:none;background:none;text-align:left;width:100%}
  .nav-item:hover{background:var(--surface-2)}
  .nav-item.active{background:var(--primary-soft);color:var(--primary)}
  .nav-item .ico{width:18px;text-align:center;font-size:15px;opacity:.95}
  .nav-sec{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted-2);font-weight:700;padding:14px 12px 6px}
  .side-foot{margin-top:auto;padding:12px;border-top:1px solid var(--border)}
  .me{display:flex;align-items:center;gap:10px}
  .me .name{font-weight:700;font-size:13px}
  .me .org{font-size:11.5px;color:var(--muted)}

  .main{flex:1;min-width:0;display:flex;flex-direction:column}
  .topbar{height:58px;display:flex;align-items:center;gap:12px;padding:0 18px;background:var(--surface);
    border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
  .topbar h2{font-size:16px;margin:0;font-weight:700}
  .hamburger{display:none;border:1px solid var(--border);background:#fff;border-radius:9px;width:38px;height:38px;font-size:18px}
  .roleswitch{display:flex;background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:3px}
  .roleswitch button{border:none;background:none;padding:6px 13px;border-radius:999px;font-weight:700;font-size:12.5px;color:var(--muted)}
  .roleswitch button.on{background:#fff;color:var(--primary);box-shadow:var(--shadow)}
  .content{padding:20px;max-width:1140px;width:100%;margin:0 auto}

  .avatar{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    color:#fff;font-weight:700;font-size:11.5px;flex:0 0 auto}
  .avatar.lg{width:40px;height:40px;font-size:14px}
  .avatar.sm{width:24px;height:24px;font-size:10px}

  .card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
  .card.pad{padding:16px}
  .grid{display:grid;gap:14px}
  .row{display:flex;align-items:center;gap:10px}
  .between{display:flex;align-items:center;justify-content:space-between;gap:12px}
  .muted{color:var(--muted)} .small{font-size:12.5px} .grow{flex:1;min-width:0}
  .ell{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .section-title{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:0 0 10px}
  .badge{font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;display:inline-flex;align-items:center;gap:5px}
  .badge.admin{background:#fef3c7;color:#92400e}
  .badge.member{background:#e0e7ff;color:#3730a3}
  .badge.invited{background:#f1f5f9;color:#475569}
  .badge.away{background:#fee2e2;color:#b91c1c}
  .badge.here{background:#dcfce7;color:#166534}
  .dot{width:9px;height:9px;border-radius:50%;display:inline-block}

  /* ---------- Avatar stack ---------- */
  .stack{display:flex;align-items:center}
  .stack .avatar{margin-left:-7px;box-shadow:0 0 0 2px #fff}
  .stack .avatar:first-child{margin-left:0}
  .stack .more{margin-left:-7px;width:24px;height:24px;border-radius:50%;background:#e5e7eb;color:#475569;
    font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 2px #fff}

  /* ---------- Calendar header / filters ---------- */
  .cal-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}
  .cal-title{font-size:18px;font-weight:800;min-width:150px}
  .seg{display:flex;border:1px solid var(--border);border-radius:9px;overflow:hidden}
  .seg button{border:none;background:#fff;padding:7px 12px;font-weight:600;font-size:12.5px;color:var(--muted)}
  .seg button.on{background:var(--primary-soft);color:var(--primary)}
  .nav-arrows button{width:34px;height:34px;border:1px solid var(--border);background:#fff;border-radius:9px;font-size:15px}
  .chips{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:8px;align-items:center}
  .gchip{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--border);background:#fff;
    padding:5px 11px;border-radius:999px;font-weight:600;font-size:12.5px;color:#374151}
  .gchip.off{opacity:.4}
  .filter-label{font-size:12px;font-weight:700;color:var(--muted);margin-right:2px}
  .pchip{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);background:#fff;
    padding:3px 10px 3px 3px;border-radius:999px;font-weight:600;font-size:12px;color:#374151}
  .pchip .avatar{width:20px;height:20px;font-size:9px}
  .pchip.off{opacity:.36}
  .linkbtn{border:none;background:none;color:var(--primary);font-weight:700;font-size:12px;padding:4px 6px}

  /* ---------- Calendar month grid (spanning bars) ---------- */
  .dow-head{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin:4px 0 6px}
  .dow-head div{text-align:center;font-size:11px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
  .month{display:flex;flex-direction:column;gap:6px}
  .week{position:relative}
  .wk-days{position:absolute;inset:0;display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
  .day{background:#fff;border:1px solid var(--border);border-radius:10px;padding:5px 6px;overflow:hidden}
  .day.out{background:#fafbfc}
  .day .num{font-size:12px;font-weight:700;color:#374151;width:23px;height:23px;display:flex;align-items:center;justify-content:center;border-radius:50%}
  .day.out .num{color:var(--muted-2)}
  .day.today .num{background:var(--primary);color:#fff}
  .wk-lanes{position:absolute;left:0;right:0;top:30px;bottom:6px;display:grid;grid-template-columns:repeat(7,1fr);
    gap:3px 6px;grid-auto-rows:22px;pointer-events:none}
  .bar{pointer-events:auto;border:none;height:22px;border-radius:6px;padding:0 7px;font-size:11.5px;font-weight:600;
    color:#fff;display:flex;align-items:center;gap:5px;white-space:nowrap;overflow:hidden;background:var(--c,#64748b);min-width:0}
  .bar:hover{filter:brightness(1.09)}
  .bar .t{overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
  .bar .tm{opacity:.85;font-weight:700}
  .bar.contL{border-top-left-radius:0;border-bottom-left-radius:0}
  .bar.contR{border-top-right-radius:0;border-bottom-right-radius:0}
  .bar.org{background:repeating-linear-gradient(45deg,#3f4b5e,#3f4b5e 7px,#566377 7px,#566377 14px)}
  .bar.bo{background:repeating-linear-gradient(45deg,#fde2e2,#fde2e2 6px,#fbcfcf 6px,#fbcfcf 12px);color:#a51e1e;border:1px solid #f4b4b4}
  .bar .mini{display:flex;flex:0 0 auto}
  .bar .mini .avatar{width:16px;height:16px;font-size:8px;margin-left:-5px;box-shadow:0 0 0 1.5px rgba(255,255,255,.9)}
  .bar .mini .avatar:first-child{margin-left:0}
  .seg-more{position:absolute;bottom:3px;font-size:10px;font-weight:700;color:var(--muted)}

  /* ---------- List view ---------- */
  .litem{display:flex;gap:12px;padding:13px;border:1px solid var(--border);border-radius:11px;background:#fff;margin-bottom:8px;width:100%;text-align:left}
  .litem:hover{background:var(--surface-2)}
  .lbar{width:4px;border-radius:4px;background:var(--c,#64748b);flex:0 0 4px}

  .list .li{display:flex;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid var(--border)}
  .list .li:last-child{border-bottom:none}
  .res-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
  .res{display:flex;flex-direction:column;gap:6px;padding:14px}
  .res .ico{width:38px;height:38px;border-radius:9px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px}
  .filetype{width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:10px;color:#fff}

  /* ---------- Modal ---------- */
  .overlay{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:flex-end;justify-content:center;z-index:50}
  .modal{background:#fff;border-radius:16px 16px 0 0;width:100%;max-width:520px;max-height:88vh;overflow:auto;box-shadow:var(--shadow-lg);animation:slideup .18s ease}
  @keyframes slideup{from{transform:translateY(24px);opacity:.6}to{transform:none;opacity:1}}
  .modal-head{padding:18px 18px 0;display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
  .modal-body{padding:14px 18px 22px}
  .x{border:none;background:var(--surface-2);width:32px;height:32px;border-radius:8px;font-size:16px;color:var(--muted)}
  .kv{display:flex;gap:10px;padding:10px 0;border-bottom:1px solid var(--border);align-items:flex-start}
  .kv .k{width:88px;flex:0 0 88px;color:var(--muted);font-weight:600;font-size:12.5px}
  .kv .v{flex:1}
  .assignee{display:flex;align-items:center;gap:9px;padding:7px 0}
  .check{display:flex;align-items:center;gap:9px;padding:8px 10px;border:1px solid var(--border);border-radius:9px;margin-bottom:6px;cursor:pointer}
  .check input{width:16px;height:16px;accent-color:var(--primary)}
  .check.on{border-color:var(--primary);background:var(--primary-soft)}

  .switch{position:relative;width:42px;height:24px;flex:0 0 42px}
  .switch input{opacity:0;width:0;height:0}
  .slider{position:absolute;inset:0;background:#cbd1da;border-radius:999px;transition:.18s}
  .slider:before{content:"";position:absolute;width:18px;height:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.18s;box-shadow:var(--shadow)}
  .switch input:checked + .slider{background:var(--primary)}
  .switch input:checked + .slider:before{transform:translateX(18px)}

  .toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#111827;color:#fff;padding:11px 16px;border-radius:10px;font-size:13px;font-weight:600;box-shadow:var(--shadow-lg);z-index:80;opacity:0;transition:.2s;pointer-events:none}
  .toast.show{opacity:1;transform:translateX(-50%) translateY(-4px)}
  .backdrop{position:fixed;inset:0;background:rgba(15,23,42,.35);z-index:30;display:none}

  .field-row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
  .field-row > div{flex:1;min-width:140px}
  .codebox{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--surface-2);border:1px solid var(--border);border-radius:9px;padding:10px 12px;font-size:12.5px;word-break:break-all}
  .codebox.cfg{white-space:pre;overflow:auto;max-height:180px;word-break:normal;margin:10px 0 0;line-height:1.5}
  code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;background:var(--surface-2);padding:1px 5px;border-radius:5px}
  .act-ico{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;background:var(--surface-2);color:var(--muted);flex:0 0 auto}
  .meta-ico{display:inline-flex;align-items:center;gap:5px}
  .meta-ico .ic{opacity:.7}
  .note{display:flex;gap:9px;background:#fffbeb;border:1px solid #fde68a;color:#92400e;border-radius:10px;padding:11px 13px;font-size:12.5px}
  .note.blue{background:#eff6ff;border-color:#bfdbfe;color:#1e40af}
  .tabs{display:inline-flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
  .tabs button{border:1px solid var(--border);background:#fff;padding:7px 13px;border-radius:9px;font-weight:600;font-size:12.5px;color:var(--muted)}
  .tabs button.on{background:var(--primary-soft);color:var(--primary);border-color:#c7cbf7}
  .swatch{width:24px;height:24px;border-radius:7px;border:2px solid #fff;box-shadow:0 0 0 1px var(--border);cursor:pointer}
  .swatch.on{box-shadow:0 0 0 2px var(--primary)}
  .btn[disabled]{opacity:.4;cursor:not-allowed}
  .btn.block{width:100%}

  /* ---------- Hover tooltip ---------- */
  #tip{position:fixed;z-index:90;max-width:268px;background:#0f172a;color:#fff;border-radius:11px;padding:11px 13px;font-size:12px;box-shadow:var(--shadow-lg);opacity:0;transform:translateY(4px);transition:.12s;pointer-events:none}
  #tip.show{opacity:1;transform:none}
  #tip .tt{font-weight:800;font-size:13px;margin-bottom:2px}
  #tip .meta{color:#cbd5e1;margin-top:2px}
  #tip .who{display:flex;align-items:center;gap:7px;margin-top:9px;flex-wrap:wrap}
  #tip .av{width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:9px;font-weight:700;color:#fff}
  #tip .nm{font-size:11.5px;color:#e2e8f0}

  @media (min-width:560px){.overlay{align-items:center;padding:20px}.modal{border-radius:16px}}
  @media (max-width:860px){
    .sidebar{position:fixed;left:0;top:0;z-index:40;transform:translateX(-100%);transition:transform .2s;box-shadow:var(--shadow-lg)}
    .sidebar.open{transform:none}
    .hamburger{display:flex;align-items:center;justify-content:center}
    .content{padding:14px}
    .bar{font-size:10.5px;padding:0 5px}
    .bar .mini{display:none}
  }

  /* rich-text editor + rendered description */
  .rt-toolbar{display:flex;gap:4px;margin-bottom:6px;flex-wrap:wrap}
  .rt-toolbar button{border:1px solid var(--border);background:#fff;border-radius:7px;padding:5px 9px;font-size:12.5px;color:#374151;cursor:pointer}
  .rt-toolbar button:hover{background:var(--surface-2)}
  .rt-edit{border:1px solid var(--border);border-radius:10px;padding:10px 12px;min-height:90px;max-height:240px;overflow:auto;font-size:14px;line-height:1.5;background:#fff}
  .rt-edit:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
  .rt-edit:empty:before{content:'Add details — agenda, notes, links…';color:var(--muted-2)}
  .rt{font-size:13.5px;line-height:1.55;color:var(--text)}
  .rt p{margin:0 0 8px}
  .rt ul,.rt ol{margin:0 0 8px 18px;padding:0}
  .rt li{margin:2px 0}
  .rt a{color:var(--primary);text-decoration:underline}
  .rt h3,.rt h4{margin:6px 0;font-size:14px}
  /* event attachments */
  .att-row{display:flex;align-items:center;gap:9px;padding:6px 0;border-bottom:1px solid var(--border)}
  .att-row:last-of-type{border-bottom:none}
  .filetype.sm{width:28px;height:28px;font-size:9px;border-radius:7px}
  /* spacing polish */
  .modal{max-width:540px}
  .kv{padding:11px 0}
  .cal-head{margin-bottom:14px}
  .card.pad{padding:18px}
  /* list-card heading wrappers (<div class="card"><div class="pad">…) must match .card.pad insets */
  .card>.pad{padding:18px}
  /* icons */
  .ic{width:18px;height:18px;display:inline-block;vertical-align:-3px;flex:0 0 auto}
  .ic.xs{width:13px;height:13px;vertical-align:-1px}
  .x{display:inline-flex;align-items:center;justify-content:center}
  .nav-arrows button{display:inline-flex;align-items:center;justify-content:center}
  .nav-item .ico{display:inline-flex;align-items:center;justify-content:center;width:18px}
  .res .ico .ic{width:20px;height:20px}
  .note .ic{margin-top:1px}
  .bar.bo .ic{stroke-width:2.4}
  /* per-day times */
  .perday{display:flex;flex-direction:column;gap:6px}
  .perday-row{display:flex;align-items:center;gap:8px}
  .perday-date{flex:0 0 120px;font-size:12.5px;font-weight:600;color:#374151}
  .perday-row input{flex:1;min-width:0;padding:7px 9px}
  .perday-dash{color:var(--muted)}
  /* v3: filters, group picker, my-events markers, rich list */
  .gchip.mine{border-color:#86efac}
  .away-wrap{align-items:flex-start}
  .away-panel{width:100%;margin-top:8px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:10px}
  .away-panel input{width:100%}
  .away-list{max-height:230px;overflow:auto;display:flex;flex-direction:column;gap:2px;margin-top:2px}
  .away-row{display:flex;align-items:center;gap:9px;padding:7px 9px;border-radius:8px;cursor:pointer}
  .away-row.on{background:#eef2ff}
  .away-row input[type=checkbox]{width:16px;height:16px;flex:0 0 auto;margin:0}
  .away-row .avatar{flex:0 0 auto}
  .away-row .grow{flex:1;min-width:0}
  .group-pick{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
  .mine-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#fff;box-shadow:0 0 0 1.5px rgba(0,0,0,.15);margin-right:5px;flex:0 0 auto}
  .bar.mine{box-shadow:inset 0 0 0 2px rgba(255,255,255,.85)}
  .litem2{display:flex;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 14px;margin-bottom:10px}
  .litem2.mine{border-color:#86efac;background:#f6fef9}
  .litem2 .lbar{width:4px;border-radius:4px;background:var(--c);flex:0 0 auto}
  .litem-head{background:none;border:0;padding:0;font:inherit;color:inherit;cursor:pointer;text-align:left}
  .litem-head:hover b{text-decoration:underline}
  .litem-kv{margin-top:3px}
  .litem-kv a{color:var(--accent)}
  /* upload spinner */
  .busy{position:fixed;inset:0;background:rgba(15,23,42,.25);display:flex;align-items:center;justify-content:center;z-index:90}
  .busy.hidden{display:none}
  .busy-card{background:#fff;border-radius:12px;padding:14px 18px;display:flex;align-items:center;gap:10px;font-weight:600;font-size:13.5px;box-shadow:var(--shadow-lg)}
  .spinner{width:18px;height:18px;border:2.5px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
  @keyframes spin{to{transform:rotate(360deg)}}
  [data-doc-search]{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px}
  [data-doc-search]:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
  /* spacing polish */
  .modal-body > .section-title:first-child{margin-top:0}
  .res .ico{overflow:hidden}