:root{
  --bg:#f5f7fb;
  --panel:#ffffff;
  --panel-2:#f8fafc;
  --text:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --line-strong:#d6dbe4;
  --accent:#0ea5e9;
  --accent-dark:#0284c7;
  --danger:#dc2626;
  --success:#16a34a;
  --warning:#d97706;
  --row-h:38px;
  --gantt-head-h:66px;
  --radius:10px;
  --shadow:0 10px 30px rgba(15,23,42,.10);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font-size:14px}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
.hidden{display:none!important}
.permission-hidden{display:none!important}
.permissions-pending [data-permission],.permissions-pending [data-permission-any],.permissions-pending [data-permission-all]{visibility:hidden!important}
.muted{color:var(--muted)}

/* Login */
.login-page{min-height:100%;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 20% 15%,#e0f2fe 0,transparent 35%),linear-gradient(135deg,#f8fafc,#eef2ff)}
.login-card{width:min(430px,100%);background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:var(--shadow)}
.login-card h1{margin:14px 0 6px;font-size:28px}
.brand-mark{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#06b6d4,#3b82f6);color:#fff;font-weight:800;letter-spacing:.03em;box-shadow:0 8px 18px rgba(14,165,233,.25)}
.brand-mark.small{width:38px;height:38px;border-radius:11px;font-size:13px;box-shadow:none}
.login-hint{margin-top:18px;background:#f8fafc;border:1px dashed #cbd5e1;border-radius:10px;padding:12px;line-height:1.55;color:#475569;font-size:12px}
.alert{padding:10px 12px;border-radius:8px;margin:14px 0}
.alert.error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}

/* Forms */
.stack-form{display:grid;gap:14px}
.stack-form label,.form-grid label{display:grid;gap:6px;font-weight:600;font-size:12px;color:#475569}
input,select,textarea{border:1px solid var(--line-strong);background:#fff;border-radius:8px;padding:9px 10px;outline:none;min-width:0}
input:focus,select:focus,textarea:focus{border-color:#7dd3fc;box-shadow:0 0 0 3px rgba(14,165,233,.12)}
textarea{resize:vertical}
small{font-size:11px;color:var(--muted);font-weight:400}
.checkbox-row{display:flex!important;align-items:center;gap:10px!important;padding:6px 0}
.checkbox-row input{width:auto}

/* Buttons */
.btn,.icon-btn{border:1px solid var(--line-strong);background:#fff;border-radius:8px;min-height:34px;display:inline-flex;align-items:center;justify-content:center;gap:6px;font-weight:600;transition:.15s ease}
.btn{padding:7px 11px}
.icon-btn{width:34px;padding:0;font-size:17px}
.btn:hover,.icon-btn:hover{background:#f8fafc;border-color:#cbd5e1}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-dark);border-color:var(--accent-dark)}
.btn.ghost{background:transparent;border-color:transparent;color:#475569}
.btn.ghost:hover{background:#f1f5f9}
.btn.danger{color:var(--danger);border-color:#fecaca}
.btn.danger:hover{background:#fef2f2}
.btn.subtle{background:#fff}
.btn.wide{width:100%}

/* App shell */
.app-page{overflow:hidden}
.app-shell{height:100dvh;display:grid;grid-template-rows:auto auto auto minmax(0,1fr);background:#fff}
.topbar{min-height:58px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;padding:8px 14px;background:#fff;z-index:20}
.brand{display:flex;align-items:center;gap:10px;min-width:195px}
.brand-name{font-weight:800;font-size:15px}
.brand-sub{font-size:11px;color:var(--muted)}
.module-nav{display:flex;align-items:center;gap:4px;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:10px;padding:3px;flex:none}
.module-link{padding:6px 10px;border-radius:7px;text-decoration:none;color:#64748b;font-size:12px;font-weight:750;white-space:nowrap}
.module-link:hover{background:#fff;color:#334155}.module-link.active{background:#fff;color:#0f172a;box-shadow:0 1px 4px rgba(15,23,42,.1)}
.project-switcher{display:flex;align-items:center;gap:5px;flex:1;max-width:520px}
.project-switcher select{font-weight:700;min-width:220px;flex:1}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:4px}
.user-chip{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#f1f5f9;color:#475569;font-size:12px;font-weight:700;white-space:nowrap}

.toolbar{min-height:48px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px;padding:6px 12px;background:#fbfdff;overflow-x:auto;scrollbar-width:thin}
.toolbar-group{display:flex;align-items:center;gap:5px;flex:none}
.toolbar-group.grow{flex:1;justify-content:flex-end}
.toolbar-search{width:220px;min-height:34px}
.toolbar-select{min-height:34px;padding-top:5px;padding-bottom:5px}
.view-toggle{display:flex;border:1px solid var(--line-strong);border-radius:8px;overflow:hidden;flex:none}
.view-btn{border:0;border-right:1px solid var(--line-strong);background:#fff;padding:8px 10px;font-weight:600;font-size:12px}
.view-btn:last-child{border-right:0}
.view-btn.active{background:#e0f2fe;color:#0369a1}

.stats-strip{min-height:38px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;padding:6px 14px;background:#fff;color:#64748b;font-size:12px;overflow-x:auto}
.stat{white-space:nowrap}.stat strong{color:#1f2937;margin-left:4px}

.workspace{min-height:0;display:grid;grid-template-columns:minmax(420px,44%) 5px minmax(0,1fr);background:#fff}
.workspace.view-split .wbs-pane{display:none}
.workspace.view-tasks,.workspace.view-gantt,.workspace.view-wbs{grid-template-columns:minmax(0,1fr)!important}
.workspace.view-tasks .gantt-pane,.workspace.view-tasks .wbs-pane,.workspace.view-tasks .splitter{display:none}
.workspace.view-tasks .task-pane{display:block;grid-column:1;width:100%}
.workspace.view-gantt .task-pane,.workspace.view-gantt .wbs-pane,.workspace.view-gantt .splitter{display:none}
.workspace.view-gantt .gantt-pane{display:block;grid-column:1;width:100%}
.workspace.view-wbs .task-pane,.workspace.view-wbs .gantt-pane,.workspace.view-wbs .splitter{display:none}
.workspace.view-wbs .wbs-pane{display:block;grid-column:1;width:100%}
.task-pane,.gantt-pane,.wbs-pane{min-width:0;min-height:0;position:relative;background:#fff}
.task-pane{overflow:hidden;border-right:0}
.splitter{background:#e2e8f0;cursor:col-resize;position:relative;z-index:10}
.splitter:hover,.splitter.dragging{background:#7dd3fc}

/* Task table */
.task-table-wrap{width:100%;height:100%;overflow:auto;scrollbar-width:thin}
.task-table{border-collapse:separate;border-spacing:0;width:max-content;min-width:100%;table-layout:fixed}
.task-table th,.task-table td{height:var(--row-h);border-bottom:1px solid #edf0f5;border-right:1px solid #f0f2f6;padding:0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;background:#fff}
.task-table thead th{position:sticky;top:0;z-index:8;height:var(--gantt-head-h);background:#f8fafc;color:#64748b;text-transform:uppercase;letter-spacing:.03em;font-size:10px;font-weight:700;vertical-align:bottom;padding-bottom:8px;border-bottom:1px solid var(--line-strong)}
.task-table tbody tr{cursor:default}
.task-table tbody tr:hover td{background:#f8fbff}
.task-table tbody tr.selected td{background:#eaf6ff}
.task-table tbody tr.selected td:first-child{box-shadow:inset 3px 0 0 var(--accent)}
.task-table tbody tr.summary td{font-weight:700}
.task-table tbody tr.summary .task-title{font-weight:800}
.task-table tbody tr.filtered-out{display:none}
.col-index{width:40px;text-align:center;color:#94a3b8}
.col-task{width:240px}.col-wbs{width:62px}.col-date{width:100px}.col-duration{width:82px}.col-progress{width:90px}.col-assignee{width:130px}.col-cost{width:120px;text-align:right}
.task-name-cell{display:flex;align-items:center;gap:5px;height:100%}
.tree-indent{flex:none}
.expand-btn{width:18px;height:18px;border:0;background:transparent;padding:0;color:#64748b;border-radius:4px;display:grid;place-items:center;font-size:12px}
.expand-btn:hover{background:#e2e8f0}
.task-bullet{width:4px;height:22px;border-radius:3px;flex:none}
.task-title{overflow:hidden;text-overflow:ellipsis}
.milestone-tag{font-size:10px;color:#7c3aed;background:#f3e8ff;border-radius:4px;padding:1px 4px;margin-left:4px}
.progress-cell{display:flex;align-items:center;gap:6px}
.mini-progress{height:5px;flex:1;min-width:30px;background:#e5e7eb;border-radius:99px;overflow:hidden}.mini-progress span{display:block;height:100%;background:#22c55e}
.progress-number{font-size:11px;color:#64748b;width:32px;text-align:right}
.assignee-pill{display:inline-flex;align-items:center;gap:5px;max-width:100%;font-size:11px;color:#475569}.avatar-dot{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;background:#e2e8f0;color:#334155;font-size:9px;font-weight:800;flex:none}
.status-dot{width:7px;height:7px;border-radius:50%;display:inline-block;margin-right:4px}.status-todo{background:#94a3b8}.status-active{background:#0ea5e9}.status-blocked{background:#ef4444}.status-done{background:#22c55e}

/* Gantt */
.gantt-pane{overflow:hidden;background:#fff}
.gantt-scroller{width:100%;height:100%;overflow:auto;scrollbar-width:thin;position:relative}
.gantt-canvas{position:relative;min-height:100%;min-width:100%}
.gantt-header{position:sticky;top:0;height:var(--gantt-head-h);z-index:9;background:#f8fafc;border-bottom:1px solid var(--line-strong);overflow:hidden}
.time-band{position:absolute;left:0;right:0;height:32px;border-bottom:1px solid #e8ecf2}
.time-band.top{top:0}.time-band.bottom{top:32px;height:34px}
.time-cell{position:absolute;height:100%;border-right:1px solid #e8ecf2;display:flex;align-items:center;justify-content:center;color:#64748b;font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 3px}
.time-cell.weekend{background:rgba(148,163,184,.07)}
.gantt-body{position:relative}
.gantt-grid,.gantt-bars,.dependency-svg{position:absolute;inset:0}
.gantt-grid{z-index:1;pointer-events:none}
.gantt-bars{z-index:3}
.dependency-svg{z-index:2;overflow:visible;pointer-events:none}
.grid-vline{position:absolute;top:0;bottom:0;border-left:1px solid #edf0f5}
.grid-vline.major{border-left-color:#dbe2ea}
.grid-weekend{position:absolute;top:0;bottom:0;background:rgba(148,163,184,.055)}
.grid-row{position:absolute;left:0;right:0;height:var(--row-h);border-bottom:1px solid #edf0f5}
.grid-row.selected{background:rgba(14,165,233,.05)}
.today-line{position:absolute;top:0;bottom:0;border-left:2px solid #ef4444;opacity:.6;z-index:4;pointer-events:none}
.gantt-bar{position:absolute;height:18px;border-radius:3px;top:10px;min-width:3px;box-shadow:0 1px 2px rgba(15,23,42,.13);cursor:pointer;overflow:visible}
.gantt-bar .bar-progress{position:absolute;inset:0 auto 0 0;background:rgba(0,0,0,.17);border-radius:3px 0 0 3px;pointer-events:none}
.gantt-bar .bar-label{position:absolute;left:calc(100% + 7px);top:0;height:18px;line-height:18px;white-space:nowrap;color:#334155;font-size:11px;font-weight:700;max-width:260px;text-overflow:ellipsis;overflow:hidden}
.gantt-bar.summary{height:10px;top:14px;border-radius:2px;box-shadow:none}
.gantt-bar.summary:before,.gantt-bar.summary:after{content:"";position:absolute;bottom:-4px;width:2px;height:5px;background:inherit}.gantt-bar.summary:before{left:0}.gantt-bar.summary:after{right:0}
.gantt-bar.selected{outline:2px solid #0f172a;outline-offset:2px}
.gantt-milestone{position:absolute;width:14px;height:14px;transform:rotate(45deg);top:12px;border:2px solid currentColor;background:#fff;z-index:3;cursor:pointer}
.gantt-milestone.selected{box-shadow:0 0 0 2px #0f172a}
.milestone-label{position:absolute;top:10px;white-space:nowrap;font-size:11px;font-weight:700;color:#334155}
.dep-path{fill:none;stroke:#64748b;stroke-width:1.25;opacity:.75;marker-end:url(#arrowhead)}

/* WBS */
.wbs-pane{overflow:hidden;background:#f8fafc}
.wbs-scroller{width:100%;height:100%;overflow:auto;scrollbar-width:thin;padding:26px 30px 54px}
.wbs-canvas{min-width:max-content;min-height:100%;padding:2px 16px 50px;display:flex;flex-direction:column;align-items:center}
.wbs-project-wrap{display:flex;flex-direction:column;align-items:center}
.wbs-project-stem{height:34px;border-left:2px solid #64748b}
.wbs-project-node,.wbs-node{position:relative;border:1px solid #94a3b8;border-radius:4px;background:#fff;box-shadow:0 2px 5px rgba(15,23,42,.12);cursor:pointer;transition:.14s ease;user-select:none}
.wbs-project-node:hover,.wbs-node:hover{box-shadow:0 6px 16px rgba(15,23,42,.16);transform:translateY(-1px)}
.wbs-project-node.selected,.wbs-node.selected{outline:3px solid rgba(14,165,233,.28);outline-offset:2px;border-color:#0284c7}
.wbs-project-node{min-width:270px;max-width:380px;padding:13px 18px;text-align:center;background:#bfe3ff;border-color:#5e7f96}
.wbs-project-title{font-size:19px;font-weight:800;line-height:1.2;color:#0f172a}
.wbs-project-meta{margin-top:7px;font-size:10px;line-height:1.45;color:#334155}
.wbs-roots{position:relative;display:flex;align-items:flex-start;gap:34px;padding-top:28px;min-width:100%}
.wbs-roots::before{content:"";position:absolute;top:0;left:140px;right:140px;border-top:2px solid #64748b}
.wbs-root-branch{position:relative;width:280px;flex:0 0 280px;padding-top:0}
.wbs-root-branch::before{content:"";position:absolute;top:-28px;left:50%;height:28px;border-left:2px solid #64748b}
.wbs-node{width:100%;padding:0;overflow:visible;border-color:#a3a3a3}
.wbs-node-main{padding:8px 11px;border-left:5px solid var(--wbs-color,#0ea5e9);background:#fff}
.wbs-root-branch>.wbs-node .wbs-node-main{background:color-mix(in srgb,var(--wbs-color,#f4c95d) 36%,white);border-left-width:0;border-radius:3px;padding:10px 11px}
.wbs-node-title{font-weight:800;font-size:14px;line-height:1.25;color:#111827;white-space:normal;overflow-wrap:anywhere}
.wbs-code{font-weight:900;margin-right:6px;color:#111827}
.wbs-node-meta{display:grid;grid-template-columns:1fr auto;gap:2px 10px;margin-top:6px;padding:5px 7px;border:1px solid #bae6fd;background:#f8fdff;box-shadow:0 1px 2px rgba(14,116,144,.08);font-size:9px;line-height:1.25;color:#334155}
.wbs-node-meta .wbs-meta-full{grid-column:1/-1}
.wbs-descendants{position:relative;margin:14px 0 0 18px;padding:0 0 0 22px;border-left:2px solid #737373}
.wbs-child{position:relative;margin:13px 0}
.wbs-child::before{content:"";position:absolute;left:-22px;top:21px;width:22px;border-top:2px solid #737373}
.wbs-child:last-child::after{content:"";position:absolute;left:-24px;top:23px;bottom:-16px;width:5px;background:#f8fafc}
.wbs-child>.wbs-descendants{margin-left:14px}
.wbs-progress{height:4px;background:#e2e8f0;border-radius:99px;overflow:hidden;margin-top:6px}
.wbs-progress>span{display:block;height:100%;background:#22c55e}
.wbs-milestone-diamond{display:inline-block;width:8px;height:8px;transform:rotate(45deg);border:2px solid #7c3aed;margin:0 5px 0 2px;background:#fff}
.wbs-help{margin-top:18px;color:#94a3b8;font-size:10px;text-align:center}

/* Empty state */
.empty-state{position:absolute;inset:var(--gantt-head-h) 0 0 0;display:grid;place-content:center;text-align:center;color:#64748b;padding:24px;z-index:15;background:#fff}
.empty-state h2{font-size:18px;color:#334155;margin:8px 0 4px}.empty-state p{margin:0}.empty-icon{font-size:32px;color:#94a3b8}

/* Dialogs */
dialog.modal{width:min(760px,calc(100vw - 28px));max-height:min(90dvh,850px);border:0;border-radius:14px;padding:0;box-shadow:0 25px 80px rgba(15,23,42,.28);overflow:hidden}
dialog.modal::backdrop{background:rgba(15,23,42,.42);backdrop-filter:blur(2px)}
dialog.small-modal{width:min(500px,calc(100vw - 28px))}
dialog.wide-modal{width:min(980px,calc(100vw - 28px))}
.modal-head,.modal-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 18px;background:#fff}.modal-head{border-bottom:1px solid var(--line)}.modal-foot{border-top:1px solid var(--line);justify-content:flex-end}
.modal-head h2{margin:0;font-size:18px}.modal-head p{margin:3px 0 0;font-size:12px}
.modal-body{padding:18px;overflow:auto;max-height:calc(90dvh - 130px)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-grid .span-2{grid-column:span 2}
.users-layout{display:grid;grid-template-columns:290px 1fr;gap:22px}.users-layout h3{margin:0 0 10px;font-size:14px}
.compact-form{display:grid;gap:8px}.users-list{display:grid;gap:8px}
.user-row{display:grid;grid-template-columns:minmax(140px,1.4fr) minmax(100px,1fr) 92px 90px auto;gap:7px;align-items:center;padding:8px;border:1px solid var(--line);border-radius:9px}.user-meta{min-width:0}.user-meta strong,.user-meta span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-meta span{font-size:11px;color:var(--muted)}

/* Toast */
.toast-host{position:fixed;right:18px;bottom:18px;display:grid;gap:8px;z-index:1000;pointer-events:none}
.toast{pointer-events:auto;min-width:240px;max-width:380px;background:#0f172a;color:#fff;border-radius:9px;padding:11px 13px;box-shadow:var(--shadow);animation:toastIn .18s ease;font-size:12px}.toast.error{background:#991b1b}.toast.success{background:#166534}@keyframes toastIn{from{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}

@media (max-width:1100px){
  .brand-sub{display:none}.module-nav{display:none}.brand{min-width:auto}.toolbar-search{width:170px}.col-assignee,.col-cost{display:none}.task-table .col-task{width:220px}.workspace{grid-template-columns:minmax(365px,48%) 5px minmax(0,1fr)}
}
@media (max-width:820px){
  .app-shell{grid-template-rows:auto auto auto minmax(0,1fr)}
  .topbar{flex-wrap:wrap;gap:8px;padding:8px}.brand{order:1}.project-switcher{order:3;max-width:none;flex-basis:100%}.topbar-actions{order:2}.topbar-actions .btn{padding:6px 7px;font-size:11px}.user-chip{display:none}
  .toolbar{gap:7px}.toolbar-group.grow{display:none}.toolbar .btn{font-size:11px;padding:6px 8px}.view-toggle{margin-left:auto}
  .stats-strip{gap:12px;padding-inline:8px}
  .workspace,.workspace.view-split{grid-template-columns:1fr}.workspace.view-split .gantt-pane,.workspace.view-split .wbs-pane,.workspace.view-split .splitter{display:none}.workspace.view-split .task-pane{display:block}
  .workspace.view-gantt .gantt-pane{display:block}.workspace.view-gantt .task-pane,.workspace.view-gantt .wbs-pane{display:none}
  .workspace.view-tasks .task-pane{display:block}.workspace.view-tasks .gantt-pane,.workspace.view-tasks .wbs-pane{display:none}
  .workspace.view-wbs .wbs-pane{display:block}.workspace.view-wbs .task-pane,.workspace.view-wbs .gantt-pane{display:none}
  .wbs-scroller{padding:18px 14px 40px}.wbs-roots{gap:18px}.wbs-root-branch{width:250px;flex-basis:250px}.wbs-roots::before{left:125px;right:125px}
  .splitter{display:none!important}
  .col-date,.col-duration,.col-progress{display:none}.task-table .col-task{width:260px}.col-wbs{width:60px}
  .users-layout{grid-template-columns:1fr}.user-row{grid-template-columns:1fr 100px;align-items:start}.user-row > *:nth-child(n+3){grid-column:auto}
  .form-grid{grid-template-columns:1fr}.form-grid .span-2{grid-column:span 1}
}
@media (max-width:520px){
  body{font-size:13px}.brand-name{font-size:13px}.brand-mark.small{width:32px;height:32px}.topbar-actions #passwordBtn{display:none}.project-switcher select{min-width:0}
  .toolbar-group:nth-of-type(2){display:none}.toolbar{padding:5px}.toolbar .btn#editTaskBtn{display:none}.view-btn{padding:7px 8px}.stats-strip{font-size:11px}
  .col-index{width:34px}.task-table .col-task{width:240px}.task-table th,.task-table td{padding-inline:6px}
  dialog.modal{width:calc(100vw - 14px);max-height:94dvh}.modal-body{padding:13px}.modal-head,.modal-foot{padding:12px 13px}
}

/* WBS empty-state positioning inside the dedicated pane */
.wbs-pane .empty-state{inset:0}