:root{
    --brand-navy:#1E3666; --brand-navy-2:#16294F;
    --bg:#EAF4FA; --surface:#FFFFFF; --surface-2:#D9ECF6; --tile:#FFFFFF;
    --ink:#1E3666; --ink-soft:#5B6B85; --line:#C3D8E6;
    --accent:#1E3666; --accent-soft:#DCE7F5;
    --red:#A8342A; --red-soft:#F5E1DE;
    --green:#2E6B4C; --green-soft:#E1EFE7;
    --amber:#B07A1E; --amber-soft:#F6EAD2;
    --tier-a:#7A2E43; --tier-a-soft:#F3E3E7;
    --tier-b:#1F6E6B; --tier-b-soft:#DCEEEC;
    --tier-c:#6E6B24; --tier-c-soft:#EDECD9;
    --tier-d:#5A3E85; --tier-d-soft:#E9E3F2;
    --shadow: 0 1px 2px rgba(30,54,102,.10), 0 1px 1px rgba(30,54,102,.06);
  }
  @media (prefers-color-scheme: dark){
    :root:not([data-theme="light"]){
      --brand-navy:#1E3666; --brand-navy-2:#16294F;
      --bg:#10192B; --surface:#182238; --surface-2:#202C46; --tile:#182238;
      --ink:#DCE7F5; --ink-soft:#95A5C2; --line:#2C3B58;
      --accent:#7C9AE0; --accent-soft:#26314A;
      --red:#E29A8F; --red-soft:#3A211D;
      --green:#94CBAE; --green-soft:#1D2E25;
      --amber:#E6BC72; --amber-soft:#3A2C15;
      --tier-a:#E8A9BC; --tier-a-soft:#3A1F29;
      --tier-b:#7FD1CB; --tier-b-soft:#173230;
      --tier-c:#C7C36B; --tier-c-soft:#2E2C12;
      --tier-d:#C0A8E6; --tier-d-soft:#2C2440;
      --shadow: 0 1px 3px rgba(0,0,0,.5);
    }
  }
  :root[data-theme="dark"]{
    --brand-navy:#1E3666; --brand-navy-2:#16294F;
    --bg:#10192B; --surface:#182238; --surface-2:#202C46; --tile:#182238;
    --ink:#DCE7F5; --ink-soft:#95A5C2; --line:#2C3B58;
    --accent:#7C9AE0; --accent-soft:#26314A;
    --red:#E29A8F; --red-soft:#3A211D;
    --green:#94CBAE; --green-soft:#1D2E25;
    --amber:#E6BC72; --amber-soft:#3A2C15;
    --tier-a:#E8A9BC; --tier-a-soft:#3A1F29;
    --tier-b:#7FD1CB; --tier-b-soft:#173230;
    --tier-c:#C7C36B; --tier-c-soft:#2E2C12;
    --tier-d:#C0A8E6; --tier-d-soft:#2C2440;
    --shadow: 0 1px 3px rgba(0,0,0,.5);
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:var(--bg); color:var(--ink);
    font-family:'Quicksand', -apple-system, 'Segoe UI', sans-serif;
    line-height:1.4;
  }
  h1,h2,h3{font-family:'Poppins', -apple-system, sans-serif; margin:0;}
  .wrap{max-width:1180px;margin:0 auto;padding:20px 20px 80px;}

  header.masthead{
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px;
    background:var(--brand-navy); color:#fff; border-radius:10px; padding:16px 22px; margin-bottom:20px;
    box-shadow:var(--shadow);
  }
  .brand{display:flex; align-items:center; gap:14px; flex-wrap:wrap;}
  .brand img.logo{height:44px; width:auto; display:block; border-radius:4px;}
  .brand .tag{font-family:'Quicksand',sans-serif; font-style:italic; font-weight:600; color:#BFD6F0; font-size:.9rem;}
  .issue-date{
    font-size:.85rem; color:#fff; background:rgba(255,255,255,.14); border:1px solid rgba(255,255,255,.4);
    padding:5px 10px; border-radius:3px; white-space:nowrap;
  }
  .role-switch{display:flex; gap:0; border:1px solid rgba(255,255,255,.55); border-radius:20px; overflow:hidden;}
  .role-switch button{
    border:none; background:transparent; color:#fff; padding:7px 16px; font:inherit; font-size:.82rem;
    cursor:pointer; font-weight:600;
  }
  .role-switch button.active{background:#fff; color:var(--brand-navy);}

  .toolbar{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; margin-bottom:16px;}
  .book-tabs{display:flex; gap:8px;}
  .book-tabs button{
    font-family:'Poppins',sans-serif; font-weight:600; font-size:.95rem; padding:8px 18px;
    border:1px solid var(--ink); background:var(--surface); color:var(--ink); border-radius:4px 4px 0 0; cursor:pointer;
    border-bottom:none; position:relative; top:1px;
  }
  .book-tabs button.active{background:var(--ink); color:var(--bg);}
  .toolbar-actions{display:flex; gap:8px; flex-wrap:wrap;}
  .btn{
    font:inherit; font-size:.8rem; font-weight:600; padding:7px 13px; border-radius:4px; cursor:pointer;
    border:1px solid var(--ink); background:var(--surface); color:var(--ink);
  }
  .btn:hover{background:var(--surface-2);}
  .btn.primary{background:var(--accent); border-color:var(--accent); color:#fff;}
  .btn.danger{background:var(--red); border-color:var(--red); color:#fff;}
  .btn.ghost{background:transparent; border-color:var(--line);}
  .btn:disabled{opacity:.45; cursor:not-allowed;}
  .btn-sm{padding:4px 9px; font-size:.72rem;}

  .legend{
    display:flex; flex-wrap:wrap; gap:14px; align-items:center; font-size:.76rem; color:var(--ink-soft);
    border:1px solid var(--line); background:var(--surface); border-radius:6px; padding:10px 14px; margin-bottom:16px;
  }
  .legend .item{display:flex; align-items:center; gap:6px;}
  .swatch{width:12px; height:12px; border-radius:2px; display:inline-block; border:1px solid var(--line);}
  .legend .note{font-style:italic; flex-basis:100%; padding-top:4px; border-top:1px dashed var(--line); margin-top:2px;}

  .board{
    background:var(--surface-2); border:1px solid var(--line); border-radius:8px; padding:22px;
    overflow-x:auto;
  }
  .spreads{display:flex; flex-wrap:wrap; gap:14px 10px; align-items:flex-end;}
  .spread{display:flex; box-shadow:var(--shadow); border-radius:2px; overflow:hidden;}
  .tile{
    width:78px; height:112px; background:var(--tile); position:relative; border:1px solid var(--line);
    padding:5px 5px 4px; display:flex; flex-direction:column; cursor:pointer; overflow:hidden;
    font-size:.62rem; color:var(--ink-soft); flex-shrink:0;
  }
  .tile.right{border-left:none;}
  .tile.solo{border-radius:2px;}
  .tile:hover{filter:brightness(0.97);}
  .tile.locked{cursor:not-allowed;}
  .tile .num{font-family:'Poppins',sans-serif; font-weight:700; font-size:1rem; color:var(--ink); line-height:1;}
  .tile .price{margin-top:auto; font-weight:700; font-size:.68rem; color:var(--ink);}
  .tile .price-ex{font-size:.56rem; color:var(--ink-soft);}
  .tile[data-tier="a"]{border-color:var(--tier-a); background:var(--tier-a-soft);}
  .tile[data-tier="b"]{border-color:var(--tier-b); background:var(--tier-b-soft);}
  .tile[data-tier="c"]{border-color:var(--tier-c); background:var(--tier-c-soft);}
  .tile[data-tier="d"]{border-color:var(--tier-d); background:var(--tier-d-soft);}
  .tile[data-tier="a"]::after{content:''; position:absolute; top:0; right:0; border-width:0 12px 12px 0; border-style:solid; border-color:transparent var(--tier-a) transparent transparent;}
  .tile[data-tier="b"]::after{content:''; position:absolute; top:0; right:0; border-width:0 12px 12px 0; border-style:solid; border-color:transparent var(--tier-b) transparent transparent;}
  .tile[data-tier="c"]::after{content:''; position:absolute; top:0; right:0; border-width:0 12px 12px 0; border-style:solid; border-color:transparent var(--tier-c) transparent transparent;}
  .tile[data-tier="d"]::after{content:''; position:absolute; top:0; right:0; border-width:0 12px 12px 0; border-style:solid; border-color:transparent var(--tier-d) transparent transparent;}
  .tile.locked{background:repeating-linear-gradient(135deg, var(--red-soft), var(--red-soft) 6px, var(--tile) 6px, var(--tile) 12px) !important;}

  .issue-date select{
    font:inherit; font-size:.85rem; font-weight:600; color:#fff; background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.4); border-radius:3px; padding:3px 6px; cursor:pointer;
  }
  .issue-date select option{color:#1E3666; background:#fff;}
  .client-search{
    width:100%; max-width:520px; padding:10px 12px; border:1px solid var(--line); border-radius:6px;
    font:inherit; background:var(--tile); color:var(--ink);
  }
  .client-card{background:var(--surface); border:1px solid var(--line); border-radius:8px; padding:14px 16px; margin-top:14px;}
  .client-head h3{font-size:1.05rem;}
  .client-head .meta{color:var(--ink-soft); font-size:.8rem; margin-top:2px;}
  .client-card .stat-row{margin:12px 0;}
  .client-card .stat .n{font-size:1.15rem;}
  .table-scroll{overflow-x:auto;}
  .closed-notice{background:var(--surface); border:2px dashed var(--line); border-radius:10px; padding:32px 20px; text-align:center; margin:16px 0;}
  .closed-notice h2{font-size:1.25rem; margin-bottom:6px;}
  .closed-notice p{color:var(--ink-soft); margin:0 0 14px;}
  .config-row.closed-row{border-color:var(--red); background:var(--red-soft);}
  .repeat-note{background:var(--surface-2); border-radius:6px; padding:8px 10px; font-size:.78rem; margin-top:6px; color:var(--ink-soft);}
  .repeat-note strong{color:var(--ink);}
  .spread-wrap{display:flex; flex-direction:column; gap:4px;}
  .spread-book{
    width:100%; font:inherit; font-size:.68rem; font-weight:700; padding:4px 6px; border-radius:4px; cursor:pointer;
    border:1px solid var(--accent); background:transparent; color:var(--accent); white-space:nowrap;
  }
  .spread-book:hover{background:var(--accent); color:var(--bg);}
  .spread-book-spacer{height:25px;}
  .tile.spread-wide{width:156px;}
  .tile.spread-wide::before{content:''; position:absolute; left:50%; top:8px; bottom:8px; width:1px; background:var(--line);}
  .tile .spread-note{font-size:.58rem; font-style:italic; color:var(--ink-soft); margin-top:3px;}

  .showcase{display:flex; gap:14px; flex-wrap:wrap; margin-bottom:18px;}
  .prime-tile{
    width:118px; min-height:150px; border:2px solid var(--line); border-radius:6px; padding:10px 10px 9px;
    display:flex; flex-direction:column; cursor:pointer; position:relative; background:var(--tile); box-shadow:var(--shadow);
  }
  .prime-tile .label{font-family:'Poppins',sans-serif; font-weight:600; font-size:.8rem; margin-bottom:6px;}
  .prime-tile .price{margin-top:auto; font-weight:700; font-size:.85rem;}
  .prime-tile .price-ex{font-size:.66rem; color:var(--ink-soft);}
  .prime-tile.spread-tile{width:200px; position:relative;}
  .prime-tile.spread-tile::before{content:''; position:absolute; left:50%; top:10px; bottom:10px; width:1px; background:var(--line); transform:translateX(-50%);}
  .spread-sub{font-size:.66rem; color:var(--ink-soft); font-style:italic; margin-bottom:6px;}
  .prime-tile[data-tier="a"]{border-color:var(--tier-a); background:var(--tier-a-soft);}
  .prime-tile[data-tier="b"]{border-color:var(--tier-b); background:var(--tier-b-soft);}
  .prime-tile[data-tier="c"]{border-color:var(--tier-c); background:var(--tier-c-soft);}
  .prime-tile[data-tier="d"]{border-color:var(--tier-d); background:var(--tier-d-soft);}
  .prime-tile.locked{background:repeating-linear-gradient(135deg, var(--red-soft), var(--red-soft) 6px, var(--tile) 6px, var(--tile) 12px) !important;}
  .prime-tile .stamp{font-size:.68rem;}
  .stamp{
    position:absolute; left:50%; top:52%; transform:translate(-50%,-50%) rotate(-14deg);
    font-family:'Poppins',sans-serif; font-weight:700; font-size:.62rem; letter-spacing:.04em;
    padding:2px 6px; border:2px solid; border-radius:3px; opacity:.92; pointer-events:none; white-space:nowrap;
  }
  .stamp.pending{color:var(--amber); border-color:var(--amber); background:var(--amber-soft);}
  .stamp.booked{color:var(--green); border-color:var(--green); background:var(--green-soft);}
  .stamp.locked-stamp{color:var(--red); border-color:var(--red); background:var(--red-soft);}

  section.panel{margin-top:26px;}
  section.panel h2{font-size:1.15rem; margin-bottom:10px;}
  .panel-sub{color:var(--ink-soft); font-size:.82rem; margin-bottom:12px;}

  .stat-row{display:flex; gap:10px; flex-wrap:wrap; margin-bottom:16px;}
  .stat{background:var(--surface); border:1px solid var(--line); border-radius:6px; padding:10px 16px; min-width:100px;}
  .stat .n{font-family:'Poppins',sans-serif; font-size:1.5rem; font-weight:700;}
  .stat .l{font-size:.7rem; color:var(--ink-soft); text-transform:uppercase; letter-spacing:.04em;}

  table.ledger{width:100%; border-collapse:collapse; font-size:.82rem; background:var(--surface); border:1px solid var(--line); border-radius:6px; overflow:hidden;}
  table.ledger th, table.ledger td{padding:9px 10px; border-bottom:1px solid var(--line); text-align:left; vertical-align:middle;}
  table.ledger th{background:var(--surface-2); font-size:.7rem; text-transform:uppercase; letter-spacing:.03em; color:var(--ink-soft);}
  table.ledger tr:last-child td{border-bottom:none;}
  .pill{display:inline-block; padding:2px 8px; border-radius:20px; font-size:.7rem; font-weight:600;}
  .pill.pending{background:var(--amber-soft); color:var(--amber);}
  .pill.booked{background:var(--green-soft); color:var(--green);}
  .pill.locked{background:var(--red-soft); color:var(--red);}
  .pill.paid{background:var(--green-soft); color:var(--green);}
  .pill.unpaid{background:var(--amber-soft); color:var(--amber);}
  .pill.na{background:var(--surface-2); color:var(--ink-soft);}
  .check{cursor:pointer; user-select:none; font-size:.78rem;}
  .empty-row td{text-align:center; color:var(--ink-soft); font-style:italic; padding:20px;}

  .config-row{display:flex; gap:20px; flex-wrap:wrap; align-items:center; background:var(--surface); border:1px solid var(--line); border-radius:6px; padding:12px 16px; margin-bottom:16px; font-size:.85rem;}
  .config-row label{display:flex; align-items:center; gap:8px;}
  .config-row input[type=number]{width:70px; padding:5px 7px; border:1px solid var(--line); border-radius:4px; font:inherit; background:var(--tile); color:var(--ink);}

  /* modal */
  .overlay{position:fixed; inset:0; background:rgba(20,18,14,.55); display:flex; align-items:center; justify-content:center; padding:20px; z-index:50;}
  .modal{background:var(--surface); border-radius:10px; max-width:420px; width:100%; padding:24px; box-shadow:0 10px 40px rgba(0,0,0,.3); max-height:88vh; overflow-y:auto;}
  .modal h3{font-size:1.2rem; margin-bottom:4px;}
  .modal .sub{color:var(--ink-soft); font-size:.82rem; margin-bottom:16px;}
  .modal label{display:block; font-size:.75rem; font-weight:600; margin:12px 0 4px;}
  .modal input{width:100%; padding:8px 10px; border:1px solid var(--line); border-radius:5px; font:inherit; background:var(--tile); color:var(--ink);}
  .modal-actions{display:flex; gap:8px; margin-top:20px; flex-wrap:wrap;}
  .info-card{background:var(--surface-2); border-radius:6px; padding:10px 12px; font-size:.82rem; margin-bottom:6px;}
  .info-card .row{display:flex; justify-content:space-between; padding:2px 0;}
  .close-x{position:absolute; top:14px; right:16px; background:none; border:none; font-size:1.2rem; cursor:pointer; color:var(--ink-soft);}
  .modal{position:relative;}

  /* mail drawer */
  .mail-fab{position:fixed; bottom:20px; right:20px; z-index:40;}
  .mail-fab button{position:relative;}
  .badge{position:absolute; top:-6px; right:-6px; background:var(--red); color:#fff; font-size:.65rem; border-radius:10px; padding:1px 6px; font-weight:700;}
  .drawer{position:fixed; top:0; right:0; height:100%; width:340px; max-width:92vw; background:var(--surface); border-left:1px solid var(--line); box-shadow:-8px 0 24px rgba(0,0,0,.15); z-index:45; transform:translateX(100%); transition:transform .25s ease; display:flex; flex-direction:column;}
  .drawer.open{transform:translateX(0);}
  .drawer-head{padding:16px; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; align-items:center;}
  .drawer-body{overflow-y:auto; padding:12px 16px; flex:1;}
  .mail-item{border-bottom:1px solid var(--line); padding:10px 0; font-size:.78rem;}
  .mail-item .to{font-weight:700; color:var(--ink);}
  .mail-item .subj{margin:2px 0; color:var(--accent); font-weight:600;}
  .mail-item .body{color:var(--ink-soft); font-size:.74rem;}
  .mail-item .time{font-size:.66rem; color:var(--ink-soft); margin-top:3px;}

  .toast-wrap{position:fixed; bottom:20px; left:20px; z-index:60; display:flex; flex-direction:column; gap:8px;}
  .toast{background:var(--ink); color:var(--bg); padding:10px 16px; border-radius:6px; font-size:.82rem; box-shadow:0 4px 14px rgba(0,0,0,.25); animation:fadein .2s ease;}
  @keyframes fadein{from{opacity:0; transform:translateY(6px);} to{opacity:1; transform:translateY(0);}}

  @media (max-width:640px){
    .brand h1{font-size:1.7rem;}
    .tile{width:64px; height:96px;}
    .tile.spread-wide{width:128px;}
  }
.group-actions{flex-basis:100%;margin-top:.5rem;padding-top:.6rem;border-top:1px dashed var(--line,#d5d9e6);display:flex;flex-wrap:wrap;gap:.4rem;}
.cancel-row{margin-top:.8rem;padding-top:.7rem;border-top:1px solid var(--line,#d5d9e6);display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;}
.cancel-ask{font-size:.85rem;color:var(--ink-soft);flex-basis:100%;}