:root {
    --bg: #FAFBFC; --bg-alt: #F1F4F8; --panel: #FFFFFF; --ink: #0F2540; --ink-soft: #1D3A5C;
    --muted: #53637A; --line: #E3E8EF; --accent: #0B7285; --accent-ink: #075D6C; --accent-soft: #E4F2F3;
    --amber: #C97A2B; --amber-soft: #FBEEE0; --green: #1E8E5A; --green-soft: #E4F5EC;
    --red: #C23A3A; --red-soft: #FBE7E7;
    box-sizing: border-box; padding-top: env(safe-area-inset-top,0px); padding-bottom: env(safe-area-inset-bottom,0px);
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --bg:#0B121C; --bg-alt:#101A28; --panel:#101B29; --ink:#EAF1F8; --ink-soft:#CBD9E8; --muted:#8DA0B8;
      --line:#223349; --accent:#3FB8C4; --accent-ink:#8FE0E8; --accent-soft:#12333A; --amber:#E3A15C; --amber-soft:#33260F;
      --green:#4FBE8A; --green-soft:#123422; --red:#E06A6A; --red-soft:#3A1616;
    }
  }
  :root[data-theme="dark"] {
    --bg:#0B121C; --bg-alt:#101A28; --panel:#101B29; --ink:#EAF1F8; --ink-soft:#CBD9E8; --muted:#8DA0B8;
    --line:#223349; --accent:#3FB8C4; --accent-ink:#8FE0E8; --accent-soft:#12333A; --amber:#E3A15C; --amber-soft:#33260F;
    --green:#4FBE8A; --green-soft:#123422; --red:#E06A6A; --red-soft:#3A1616;
  }
  * { box-sizing: border-box; }
  html { height: 100%; scroll-padding-top: env(safe-area-inset-top,0px); }
  body { height: 100%; margin: 0; background: var(--bg); color: var(--ink); font-family: 'Inter', system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
  h1,h2,h3,.disp { font-family: 'Space Grotesk','Inter',sans-serif; letter-spacing: -0.01em; }
  button { font-family: inherit; }

  .app { display: flex; height: 100%; min-height: 100vh; }
  /* Sidebar */
  .sidebar { width: 236px; flex-shrink: 0; background: var(--panel); border-right: 1px solid var(--line); display: flex; flex-direction: column; padding: 20px 14px; padding-top: calc(20px + env(safe-area-inset-top,0px)); }
  .brand { display:flex; align-items:center; gap:9px; font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:1.1rem; padding: 6px 8px 22px; }
  .brand svg { width:24px; height:24px; }
  .nav-group { margin-bottom: 18px; }
  .nav-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); padding: 0 10px; margin-bottom: 8px; font-weight: 600; }
  .nav-item { display:flex; align-items:center; gap:10px; padding: 9px 10px; border-radius: 5px; color: var(--ink-soft); text-decoration:none; font-size:0.92rem; font-weight:500; cursor:pointer; border:none; background:none; width:100%; text-align:left; }
  .nav-item svg { width:17px; height:17px; stroke: currentColor; flex-shrink:0; }
  .nav-item:hover { background: var(--bg-alt); }
  .nav-item.active { background: var(--accent-soft); color: var(--accent-ink); }
  .nav-item .badge { margin-left:auto; background: var(--amber); color:#fff; font-size:0.7rem; font-weight:700; padding:1px 6px; border-radius:8px; }
  .sidebar-foot { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--line); font-size: 0.78rem; color: var(--muted); }

  .main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
  .topbar { height: 64px; border-bottom: 1px solid var(--line); display:flex; align-items:center; justify-content: space-between; padding: 0 24px; padding-top: env(safe-area-inset-top,0px); background: var(--panel); position: sticky; top:0; z-index: 20; }
  .topbar h1 { font-size: 1.05rem; margin: 0; }
  .content { padding: 26px 26px 60px; flex:1; }
  .menu-toggle-mobile { display:none; background:none; border:none; cursor:pointer; }
  .menu-toggle-mobile svg { width:22px; height:22px; stroke: var(--ink); }

  /* Cards / stats */
  .grid4 { display:grid; grid-template-columns: repeat(4,1fr); gap:16px; margin-bottom: 26px; }
  .kpi { background: var(--panel); border:1px solid var(--line); border-radius:6px; padding:18px 20px; }
  .kpi .label { font-size:0.82rem; color: var(--muted); margin-bottom:8px; }
  .kpi .num { font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:1.7rem; }
  .kpi .delta { font-size:0.78rem; margin-top:6px; }
  .delta.up { color: var(--green); } .delta.down { color: var(--red); }

  .panel { background: var(--panel); border:1px solid var(--line); border-radius:6px; margin-bottom:22px; }
  .panel-head { display:flex; align-items:center; justify-content:space-between; padding:16px 20px; border-bottom:1px solid var(--line); }
  .panel-head h2 { font-size:1rem; margin:0; }
  .panel-body { padding: 4px 0; }

  .toolbar { display:flex; gap:10px; align-items:center; padding: 14px 20px; border-bottom:1px solid var(--line); flex-wrap:wrap; }
  .toolbar input[type=text], .toolbar select { padding:8px 10px; border:1px solid var(--line); border-radius:4px; font-size:0.88rem; background:var(--bg); color:var(--ink); }
  .toolbar .spacer { flex:1; }

  table { width:100%; border-collapse: collapse; font-size: 0.88rem; }
  thead th { text-align:left; padding:10px 20px; color:var(--muted); font-weight:600; font-size:0.78rem; text-transform:uppercase; letter-spacing:0.03em; border-bottom:1px solid var(--line); white-space:nowrap; }
  tbody td { padding: 12px 20px; border-bottom: 1px solid var(--line); vertical-align: middle; }
  tbody tr:last-child td { border-bottom: none; }
  tbody tr:hover { background: var(--bg-alt); }
  .cell-main { font-weight:600; }
  .cell-sub { color: var(--muted); font-size:0.82rem; }
  .scrollx { overflow-x: auto; }

  .tag { display:inline-flex; align-items:center; gap:5px; padding: 3px 10px; border-radius: 12px; font-size: 0.76rem; font-weight: 600; white-space:nowrap; }
  .tag-green { background: var(--green-soft); color: var(--green); }
  .tag-amber { background: var(--amber-soft); color: var(--amber); }
  .tag-red { background: var(--red-soft); color: var(--red); }
  .tag-muted { background: var(--bg-alt); color: var(--muted); }

  .btn { display:inline-flex; align-items:center; gap:6px; padding: 8px 14px; border-radius:4px; font-weight:600; font-size:0.85rem; border:1px solid transparent; cursor:pointer; }
  .btn-primary { background: var(--accent); color:#fff; }
  .btn-primary:hover { background: var(--accent-ink); }
  .btn-ghost { background:transparent; border-color: var(--line); color: var(--ink); }
  .btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
  .btn-danger { background: transparent; color: var(--red); border-color: var(--red-soft); }
  .btn-danger:hover { background: var(--red-soft); }
  .btn-sm { padding: 5px 10px; font-size: 0.78rem; }
  .icon-btn { background:none; border:none; cursor:pointer; padding:5px; border-radius:4px; color: var(--muted); }
  .icon-btn:hover { background: var(--bg-alt); color: var(--ink); }
  .icon-btn svg { width:16px; height:16px; stroke:currentColor; }
  .row-actions { display:flex; gap:4px; justify-content:flex-end; }

  .empty { text-align:center; padding: 50px 20px; color: var(--muted); }
  .empty svg { width:36px; height:36px; stroke: var(--line); margin-bottom: 12px; }

  /* Modal */
  .overlay { position: fixed; inset:0; background: rgba(10,20,35,0.45); display:none; align-items:center; justify-content:center; z-index: 100; padding: 20px; }
  .overlay.open { display:flex; }
  .modal { background: var(--panel); border-radius: 8px; width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; border:1px solid var(--line); }
  .modal-head { display:flex; justify-content:space-between; align-items:center; padding: 18px 22px; border-bottom:1px solid var(--line); }
  .modal-head h3 { margin:0; font-size:1.05rem; }
  .modal-body { padding: 20px 22px; display:flex; flex-direction:column; gap:14px; }
  .modal-foot { padding: 16px 22px; border-top:1px solid var(--line); display:flex; justify-content:flex-end; gap:10px; }
  .field { display:flex; flex-direction:column; gap:6px; }
  .field-row { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
  label { font-size:0.82rem; font-weight:600; color: var(--ink-soft); }
  input, select, textarea { font-family:inherit; font-size:0.9rem; padding:9px 11px; border-radius:4px; border:1px solid var(--line); background:var(--bg); color:var(--ink); width:100%; }
  input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset:1px; border-color:var(--accent); }
  textarea { min-height: 80px; resize: vertical; }

  .toast { position: fixed; bottom: 24px; right: 24px; background: var(--ink); color: #fff; padding: 12px 18px; border-radius: 6px; font-size: 0.88rem; z-index: 200; opacity:0; transform: translateY(8px); transition: all 0.25s ease; pointer-events:none; }
  .toast.show { opacity:1; transform: translateY(0); }

  .avatar { width:30px; height:30px; border-radius:50%; background: var(--accent-soft); color: var(--accent-ink); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:0.78rem; flex-shrink:0; }
  .flex-name { display:flex; align-items:center; gap:10px; }

  .view { display:none; }
  .view.active { display:block; }

  /* Public blog view */
  #publicBlog { min-height:100vh; background: var(--bg); }
  #publicBlog header { border-bottom:1px solid var(--line); background: var(--panel); }
  #publicBlog .navrow { display:flex; align-items:center; justify-content:space-between; height:68px; }
  .pub-post-card { background: var(--panel); border:1px solid var(--line); border-radius:6px; padding:24px; margin-bottom:16px; cursor:pointer; }
  .pub-post-card:hover { border-color: var(--accent); }
  .pub-post-card .date { font-size:0.8rem; color: var(--muted); margin-bottom:8px; }
  .pub-post-card h2 { font-size:1.15rem; margin:0 0 8px; }
  .pub-post-card p { color: var(--muted); margin:0; font-size:0.92rem; }
  .pub-back { display:inline-flex; align-items:center; gap:6px; color: var(--accent); text-decoration:none; font-weight:600; font-size:0.9rem; margin-bottom:24px; cursor:pointer; background:none; border:none; font-family:inherit; padding:0; }
  .pub-detail-date { font-size:0.85rem; color: var(--muted); margin-bottom:10px; }
  .pub-detail h1 { font-size:1.8rem; margin:0 0 20px; }
  .pub-detail-content { font-size:1.02rem; line-height:1.75; white-space:pre-wrap; }
  .pub-empty { text-align:center; padding:60px 20px; color: var(--muted); }

  @media (max-width: 860px) {
    .sidebar { position: fixed; left: 0; top:0; bottom:0; z-index: 60; transform: translateX(-100%); transition: transform 0.2s ease; box-shadow: 4px 0 24px rgba(0,0,0,0.15); }
    .sidebar.open { transform: translateX(0); }
    .menu-toggle-mobile { display:block; }
    .grid4 { grid-template-columns: 1fr 1fr; }
    .field-row { grid-template-columns: 1fr; }
  }
  @media (max-width: 520px) {
    .grid4 { grid-template-columns: 1fr; }
    .content { padding: 18px 14px 50px; }
  }