/* ── Admin panel ──────────────────────────────────────────────── */
    /* Hidden by default; shown when route is #admin/* AND user is god.
       Cream-on-ink palette with a darker side rail to signal admin-only
       territory. Mobile collapses to a stacked nav. */
    .admin-shell {
      display: none;
      min-height: 100vh;
      background: var(--bg);
      position: relative; z-index: 2;
    }
    .admin-shell.is-active { display: grid; grid-template-rows: 64px 1fr; }
    .admin-shell.is-active + .shell { display: none; }   /* hide public site while in admin */

    .admin-topbar {
      display: flex; align-items: center; gap: 1rem;
      padding: 0 1.25rem;
      background: var(--ink); color: var(--bg);
      border-bottom: 1px solid var(--ink);
    }
    .admin-topbar-brand {
      display: flex; align-items: center; gap: .65rem;
      font-family: var(--font-display); font-weight: 500; font-size: 1.05rem;
      letter-spacing: -.005em;
    }
    .admin-topbar-eyebrow {
      padding: .2rem .55rem; background: rgba(214,118,89,.18);
      color: var(--accent-warm); font-size: .68rem; font-weight: 700;
      letter-spacing: .14em; text-transform: uppercase; border-radius: 99px;
      border: 1px solid rgba(214,118,89,.32);
    }
    .admin-topbar-spacer { flex: 1; }
    .admin-topbar-user {
      display: flex; align-items: center; gap: .85rem;
      font-size: .86rem; color: rgba(250,246,234,.72); font-weight: 600;
    }
    .admin-topbar-user .crown { color: var(--accent-warm); }
    .admin-signout {
      padding: .45rem .9rem; background: rgba(250,246,234,.08);
      border: 1px solid rgba(250,246,234,.16); color: var(--bg);
      border-radius: 99px; font-size: .82rem; font-weight: 600;
      transition: all .14s ease;
    }
    .admin-signout:hover { background: var(--accent-warm); border-color: var(--accent-warm); transform: translateY(-1px); }
    .admin-back-public {
      padding: .45rem .9rem; background: transparent;
      border: 1px solid rgba(250,246,234,.16); color: rgba(250,246,234,.72);
      border-radius: 99px; font-size: .82rem; font-weight: 600;
      transition: all .14s ease;
    }
    .admin-back-public:hover { color: var(--bg); border-color: rgba(250,246,234,.4); }

    /* Admin-scoped language toggle — same shape as public, dark-mode tints */
    .admin-lang-toggle {
      background: rgba(250,246,234,.06);
      padding: .15rem;
    }
    .admin-lang-toggle .lang-btn {
      color: rgba(250,246,234,.65);
      padding: .3rem .65rem; font-size: .74rem;
    }
    .admin-lang-toggle .lang-btn:hover { color: var(--bg); }
    .admin-lang-toggle .lang-btn.is-active {
      background: var(--bg); color: var(--ink);
    }

    .admin-body { display: grid; grid-template-columns: 240px 1fr; min-height: 0; }
    /* Editor mode (#editor/...): hides the admin sidebar — editors edit
       a single course's lessons and don't need Tenants / Bundles / Users.
       The "Admin" eyebrow in the topbar is swapped to "Editor" via a
       pseudo-element so editors aren't told they're in admin. */
    body.editor-mode .admin-body { grid-template-columns: 1fr; }
    body.editor-mode .admin-sidebar { display: none; }
    body.editor-mode .admin-topbar-eyebrow { font-size: 0; }
    body.editor-mode .admin-topbar-eyebrow::before {
      content: 'Editor';
      font-size: .72rem; font-weight: 700; letter-spacing: .12em;
      text-transform: uppercase; color: rgba(255,255,255,.55);
    }
    .admin-sidebar {
      background: var(--bg-tint);
      border-right: 1px solid var(--line);
      padding: 1.25rem .85rem;
      overflow-y: auto;
    }
    .admin-side-h {
      font-size: .66rem; font-weight: 700; letter-spacing: .16em;
      text-transform: uppercase; color: var(--ink-mute);
      margin: .85rem .55rem .45rem;
    }
    .admin-side-h:first-child { margin-top: 0; }
    .admin-nav-item {
      display: flex; align-items: center; gap: .65rem;
      padding: .55rem .8rem; margin-bottom: .15rem;
      border-radius: 8px; cursor: pointer; border: 0; background: transparent;
      width: 100%; text-align: left;
      color: var(--ink-soft); font-size: .92rem; font-weight: 500;
      font-family: inherit;
      transition: all .12s ease;
    }
    .admin-nav-item:hover { background: var(--line-soft); color: var(--ink); }
    .admin-nav-item.is-active {
      background: var(--ink); color: var(--bg); font-weight: 600;
    }
    .admin-nav-icon { font-size: 1rem; width: 18px; text-align: center; }
    .admin-nav-badge {
      margin-left: auto; padding: .12rem .45rem; border-radius: 99px;
      background: var(--accent-warm-soft); color: var(--accent-warm);
      font-size: .68rem; font-weight: 700;
    }
    .admin-nav-item.is-active .admin-nav-badge { background: rgba(250,246,234,.16); color: var(--bg); }

    .admin-main { padding: 2rem 2.4rem; overflow-y: auto; min-height: 0; }
    .admin-page-h {
      display: flex; align-items: flex-end; justify-content: space-between;
      gap: 1rem; flex-wrap: wrap;
      padding-bottom: 1.25rem; margin-bottom: 1.5rem;
      border-bottom: 1px solid var(--line);
    }
    .admin-page-eyebrow {
      font-size: .7rem; font-weight: 700; letter-spacing: .14em;
      text-transform: uppercase; color: var(--accent-warm); margin-bottom: .35rem;
    }
    .admin-page-h h1 {
      font-family: var(--font-display); font-size: 1.85rem; font-weight: 500;
      letter-spacing: -.01em; margin: 0; color: var(--ink);
    }
    .admin-page-h p { margin: .5rem 0 0; color: var(--ink-soft); font-size: .94rem; max-width: 560px; line-height: 1.5; }
    .admin-page-actions { display: flex; gap: .55rem; flex-wrap: wrap; }
    .admin-btn {
      display: inline-flex; align-items: center; gap: .45rem;
      padding: .65rem 1.15rem; border-radius: 999px; border: 1.5px solid var(--ink);
      background: var(--ink); color: var(--bg);
      font-size: .88rem; font-weight: 600;
      cursor: pointer; transition: all .15s ease;
    }
    .admin-btn:hover { background: var(--accent-warm); border-color: var(--accent-warm); transform: translateY(-1px); }
    .admin-btn.is-ghost { background: transparent; color: var(--ink); }
    .admin-btn.is-ghost:hover { background: var(--ink); color: var(--bg); }

    .admin-empty {
      text-align: center; padding: 4rem 2rem;
      background: var(--card); border: 1px dashed var(--line);
      border-radius: var(--radius-lg);
    }
    .admin-empty-icon { font-size: 2.6rem; margin-bottom: .85rem; opacity: .55; }
    .admin-empty h3 { font-family: var(--font-display); font-size: 1.5rem; font-weight: 500; margin: 0 0 .55rem; color: var(--ink); }
    .admin-empty p { margin: 0 auto 1.6rem; color: var(--ink-soft); max-width: 440px; line-height: 1.55; }

    .admin-stub {
      padding: 2rem; background: var(--card); border: 1px solid var(--line);
      border-radius: var(--radius-lg);
    }

    /* ── Leads inbox (#admin/leads) ───────────────────────────────── */
    .leads-filters {
      display: flex; gap: .5rem; flex-wrap: wrap;
      margin-bottom: 1rem;
    }
    .leads-chip {
      display: inline-flex; align-items: center; gap: .4rem;
      padding: .4rem .85rem;
      background: var(--card); border: 1px solid var(--line);
      border-radius: 99px;
      font-size: .82rem; font-weight: 600;
      color: var(--ink-soft);
      cursor: pointer;
      transition: all .15s ease;
    }
    .leads-chip:hover { color: var(--ink); border-color: var(--ink-mute); }
    .leads-chip.is-active {
      background: var(--ink); color: var(--bg); border-color: var(--ink);
    }
    .leads-chip-count {
      font-size: .72rem; font-weight: 700;
      padding: .1rem .45rem; border-radius: 99px;
      background: var(--line-soft); color: var(--ink-mute);
    }
    .leads-chip.is-active .leads-chip-count {
      background: rgba(255,255,255,.2); color: var(--bg);
    }
    .leads-list {
      display: flex; flex-direction: column;
      background: var(--card); border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .lead-row + .lead-row { border-top: 1px solid var(--line-soft); }
    .lead-row.is-open { background: var(--bg-tint); }
    .lead-summary {
      display: grid;
      grid-template-columns: 12px minmax(0,1fr) auto;
      gap: 1rem; align-items: center;
      padding: .9rem 1.2rem;
      cursor: pointer;
      transition: background .15s ease;
    }
    .lead-row:not(.is-open) .lead-summary:hover { background: var(--bg-tint); }
    .lead-status-dot {
      width: 10px; height: 10px; border-radius: 50%;
      flex-shrink: 0;
    }
    .lead-status-dot.is-new      { background: #3F6B4E; box-shadow: 0 0 0 3px rgba(92,138,106,.18); }
    .lead-status-dot.is-handled  { background: var(--ink-mute); }
    .lead-status-dot.is-spam     { background: #B6442C; }
    .lead-row.is-handled .lead-who,
    .lead-row.is-handled .lead-preview { opacity: .6; }
    .lead-row.is-spam .lead-who,
    .lead-row.is-spam .lead-preview { opacity: .45; text-decoration: line-through; }
    .lead-main { min-width: 0; }
    .lead-who {
      font-weight: 600; color: var(--ink);
      font-size: .94rem;
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .lead-preview {
      font-size: .82rem; color: var(--ink-soft);
      margin-top: .15rem;
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .lead-when {
      font-size: .78rem; color: var(--ink-mute);
      font-variant-numeric: tabular-nums;
      flex-shrink: 0;
    }
    .lead-detail {
      padding: .2rem 1.2rem 1.2rem 2.4rem;
      background: var(--bg-tint);
      border-top: 1px dashed var(--line);
    }
    .lead-detail-grid {
      display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: .75rem 1.4rem;
      margin: .9rem 0;
    }
    .lead-k {
      display: block;
      font-size: .68rem; font-weight: 700; letter-spacing: .12em;
      text-transform: uppercase; color: var(--ink-mute);
      margin-bottom: .2rem;
    }
    .lead-v { color: var(--ink); font-size: .9rem; }
    .lead-link { color: var(--ink) !important; text-decoration: underline; }
    .lead-message {
      margin-top: .5rem; padding: .85rem 1rem;
      background: var(--card); border: 1px solid var(--line);
      border-radius: 8px;
    }
    .lead-msg-body {
      margin-top: .35rem;
      font-size: .9rem; color: var(--ink); line-height: 1.55;
      white-space: pre-wrap;
    }
    .lead-actions {
      display: flex; gap: .5rem; flex-wrap: wrap;
      margin-top: 1rem;
    }
    .leads-empty {
      padding: 2.4rem; text-align: center;
      background: var(--card); border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      color: var(--ink-soft);
    }
    .leads-empty p { margin: .8rem 0 0; }
    @media (max-width: 720px) {
      .lead-summary { grid-template-columns: 12px 1fr; }
      .lead-when { grid-column: 2; font-size: .72rem; margin-top: .25rem; }
      .lead-detail { padding-left: 1.2rem; }
    }

    /* ── Email Designer ────────────────────────────────────────────── */
    .emails-shell {
      display: grid;
      grid-template-columns: 220px 320px 1fr;
      gap: 1rem;
      align-items: stretch;
      min-height: 70vh;
    }
    .emails-tpl-list {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: .55rem;
      display: flex;
      flex-direction: column;
      gap: .25rem;
      align-self: start;
    }
    .emails-tpl {
      display: flex; flex-direction: column;
      padding: .65rem .8rem;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      background: transparent;
      text-align: left;
      color: var(--ink);
      transition: background .12s ease, border-color .12s ease;
    }
    .emails-tpl:hover { background: var(--bg-tint); }
    .emails-tpl.is-active {
      background: var(--bg-tint);
      border-color: var(--line);
    }
    .emails-tpl-key {
      font-size: .92rem; font-weight: 500; color: var(--ink); margin: 0;
    }
    .emails-tpl-desc {
      font-size: .76rem; color: var(--ink-soft); margin: .2rem 0 0; line-height: 1.4;
    }
    .emails-form {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 1rem;
      display: flex;
      flex-direction: column;
      gap: .8rem;
      overflow-y: auto;
      max-height: 80vh;
    }
    .emails-form-h {
      margin: 0 0 .25rem;
      font-family: var(--font-display);
      font-size: 1rem; font-weight: 500;
      color: var(--ink);
    }
    .emails-form label {
      display: block;
      font-size: .73rem;
      font-weight: 600;
      letter-spacing: .04em;
      text-transform: uppercase;
      color: var(--ink-soft);
      margin: 0 0 .3rem;
    }
    .emails-form input,
    .emails-form select {
      width: 100%;
      padding: .55rem .7rem;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--card);
      color: var(--ink);
      font-size: .9rem;
      font-family: inherit;
    }
    .emails-form input:focus,
    .emails-form select:focus {
      outline: none;
      border-color: var(--ink);
    }
    .emails-actions {
      display: flex;
      gap: .55rem;
      align-items: center;
      padding-top: .55rem;
      border-top: 1px solid var(--line-soft);
      margin-top: .25rem;
    }
    .emails-test-input { flex: 1; }
    .emails-send-btn {
      padding: .55rem 1rem;
      background: var(--ink);
      color: var(--card);
      border: 0;
      border-radius: 8px;
      font-weight: 500;
      font-size: .9rem;
      cursor: pointer;
      white-space: nowrap;
    }
    .emails-send-btn:hover { opacity: .92; }
    .emails-send-btn:disabled { opacity: .5; cursor: not-allowed; }
    .emails-msg {
      font-size: .8rem; line-height: 1.4;
      padding: .5rem .7rem;
      border-radius: 6px;
      display: none;
    }
    .emails-msg.is-shown { display: block; }
    .emails-msg.is-ok    { background: rgba(92,138,106,.12); color: #3F6B4E; }
    .emails-msg.is-error { background: rgba(178, 64, 64, .1); color: #b24040; }
    .emails-preview {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .emails-preview-h {
      padding: .65rem .9rem;
      border-bottom: 1px solid var(--line);
      background: var(--bg-tint);
      font-size: .82rem;
      color: var(--ink-soft);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: .8rem;
    }
    .emails-preview-subject {
      color: var(--ink);
      font-weight: 500;
      font-size: .88rem;
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
      flex: 1;
    }
    .emails-preview iframe {
      flex: 1;
      width: 100%;
      border: 0;
      min-height: 60vh;
      background: #f7f4ed;
    }
    .emails-preview-empty {
      padding: 3rem 1.5rem;
      text-align: center;
      color: var(--ink-soft);
      font-size: .9rem;
    }
    @media (max-width: 1080px) {
      .emails-shell { grid-template-columns: 1fr; }
      .emails-form, .emails-tpl-list { max-height: none; }
      .emails-preview iframe { min-height: 480px; }
    }
    .admin-stub h3 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 500; margin: 0 0 .35rem; }
    .admin-stub p { margin: 0; color: var(--ink-soft); font-size: .94rem; line-height: 1.55; }
    .admin-stub-tag {
      display: inline-flex; padding: .25rem .65rem;
      background: var(--accent-warm-soft); color: var(--accent-warm);
      font-size: .68rem; font-weight: 700; letter-spacing: .12em;
      text-transform: uppercase; border-radius: 99px; margin-bottom: .85rem;
    }

    .admin-deny {
      max-width: 480px; margin: 6rem auto; text-align: center;
      padding: 2.5rem 2rem; background: var(--card);
      border: 1px solid var(--line); border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
    }
    .admin-deny h2 { font-family: var(--font-display); font-size: 1.6rem; font-weight: 500; margin: 0 0 .55rem; }
    .admin-deny p { margin: 0 0 1.5rem; color: var(--ink-soft); }

    @media (max-width: 860px) {
      .admin-body { grid-template-columns: 1fr; }
      .admin-sidebar { border-right: 0; border-bottom: 1px solid var(--line); padding: .85rem; }
      .admin-main { padding: 1.4rem 1.2rem; }
    }

    /* ── Tenants list + detail ────────────────────────────────────── */
    .t-grid {
      display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 1.1rem;
    }
    .t-card {
      display: flex; flex-direction: column; gap: .55rem;
      padding: 1.4rem 1.4rem 1.2rem;
      background: var(--card); border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      cursor: pointer; transition: all .18s ease;
      position: relative;
    }
    .t-card:hover {
      transform: translateY(-3px);
      border-color: var(--ink); box-shadow: var(--shadow-md);
    }
    .t-card-mark {
      width: 44px; height: 44px; border-radius: 12px;
      color: var(--bg); font-family: var(--font-display);
      font-size: 1.3rem; font-weight: 600;
      display: flex; align-items: center; justify-content: center;
      margin-bottom: .35rem;
    }
    .t-card-name {
      font-family: var(--font-display); font-size: 1.25rem; font-weight: 500;
      color: var(--ink); letter-spacing: -.005em;
    }
    .t-card-meta {
      font-size: .82rem; color: var(--ink-soft);
    }
    .t-card-foot {
      margin-top: .85rem; padding-top: .85rem;
      border-top: 1px solid var(--line-soft);
      display: flex; align-items: center; justify-content: space-between; gap: .55rem;
    }
    .t-card-url {
      font-family: 'SF Mono', Menlo, monospace; font-size: .76rem;
      color: var(--ink-mute); overflow: hidden; text-overflow: ellipsis;
      white-space: nowrap; min-width: 0;
    }
    .t-status-on {
      font-size: .68rem; font-weight: 700; letter-spacing: .08em;
      text-transform: uppercase; padding: .18rem .5rem; border-radius: 99px;
      background: rgba(76,134,82,.14); color: #4C8652;
      border: 1px solid rgba(76,134,82,.32);
    }
    .t-status-off {
      font-size: .68rem; font-weight: 700; letter-spacing: .08em;
      text-transform: uppercase; padding: .18rem .5rem; border-radius: 99px;
      background: var(--line-soft); color: var(--ink-mute);
      border: 1px solid var(--line);
    }

    .t-back {
      display: inline-flex; align-items: center; gap: .35rem;
      padding: .35rem .65rem; border-radius: 8px;
      font-size: .82rem; color: var(--ink-soft); font-weight: 600;
      margin-bottom: 1rem;
      transition: all .14s ease;
    }
    .t-back:hover { background: var(--line-soft); color: var(--ink); }

    .t-detail-mark {
      width: 56px; height: 56px; border-radius: 14px;
      color: var(--bg); font-family: var(--font-display);
      font-size: 1.7rem; font-weight: 600;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }

    .t-section-h {
      font-family: var(--font-display); font-size: 1.25rem; font-weight: 500;
      letter-spacing: -.005em;
      margin: 2.4rem 0 1rem; display: flex; align-items: baseline; gap: .55rem;
    }
    .t-section-count {
      font-family: var(--font-body); font-size: .78rem;
      padding: .15rem .55rem; border-radius: 99px;
      background: var(--line-soft); color: var(--ink-mute); font-weight: 600;
    }

    .t-courses { display: flex; flex-direction: column; gap: .65rem; }
    .t-course {
      display: flex; align-items: center; gap: 1.1rem;
      padding: 1.05rem 1.3rem;
      background: var(--card); border: 1px solid var(--line);
      border-left: 4px solid var(--accent, var(--ink));
      border-radius: var(--radius);
      cursor: pointer; transition: all .15s ease;
    }
    .t-course:hover {
      border-color: var(--accent, var(--ink));
      transform: translateX(3px);
      box-shadow: 0 4px 14px rgba(26,22,16,.06);
    }
    .t-course-icon {
      width: 48px; height: 48px; border-radius: 12px;
      background: color-mix(in oklab, var(--accent, var(--ink)) 12%, var(--card));
      border: 1px solid color-mix(in oklab, var(--accent, var(--ink)) 25%, transparent);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.4rem; flex-shrink: 0;
    }
    .t-course-body { flex: 1; min-width: 0; }
    .t-course-name {
      font-family: var(--font-display); font-size: 1.1rem; font-weight: 500;
      color: var(--ink); letter-spacing: -.005em; margin-bottom: .2rem;
    }
    .t-course-desc {
      font-size: .86rem; color: var(--ink-soft); line-height: 1.5;
      margin-bottom: .55rem;
      overflow: hidden; text-overflow: ellipsis;
      display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical;
    }
    .t-course-meta {
      display: flex; gap: .55rem; align-items: center;
      font-size: .76rem; color: var(--ink-mute); font-weight: 600;
      letter-spacing: .02em;
    }
    .t-course-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--ink-mute); }
    .t-course-arrow { color: var(--ink-mute); font-size: 1.05rem; }
    .t-course:hover .t-course-arrow { color: var(--accent, var(--ink)); }

    .t-detail-name {
      display: inline-flex; align-items: center; gap: .55rem;
    }
    .t-detail-name-pencil {
      background: transparent;
      border: none;
      padding: .15rem .35rem;
      font-size: .85rem;
      color: var(--ink-soft);
      cursor: pointer;
      border-radius: 4px;
      opacity: 0;
      transition: opacity .15s, background .15s;
    }
    .t-detail-name:hover .t-detail-name-pencil { opacity: .8; }
    .t-detail-name-pencil:hover { opacity: 1 !important; background: var(--bg-tint); color: var(--ink); }

    /* ── Branding section (logo + textLogo upload) ────────────── */
    .t-detail-mark img {
      width: 100%; height: 100%;
      object-fit: contain;
      padding: 6px;
      background: white;
      border-radius: 14px;
    }
    .t-branding {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }
    @media (max-width: 720px) {
      .t-branding { grid-template-columns: 1fr; }
    }
    .t-brand-slot {
      display: flex; flex-direction: column;
      padding: 1.2rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
    }
    .t-brand-label {
      font-size: .75rem;
      font-weight: 700;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: var(--ink-mute);
      margin-bottom: .8rem;
    }
    .t-brand-preview {
      flex: 1;
      min-height: 130px;
      border: 1.5px dashed var(--line);
      border-radius: var(--radius);
      display: flex; align-items: center; justify-content: center;
      padding: 1rem;
      background: linear-gradient(45deg, var(--bg-tint) 25%, transparent 25%),
                  linear-gradient(-45deg, var(--bg-tint) 25%, transparent 25%),
                  linear-gradient(45deg, transparent 75%, var(--bg-tint) 75%),
                  linear-gradient(-45deg, transparent 75%, var(--bg-tint) 75%);
      background-size: 14px 14px;
      background-position: 0 0, 0 7px, 7px -7px, -7px 0;
      margin-bottom: .9rem;
      overflow: hidden;
    }
    .t-brand-preview img {
      max-height: 110px;
      max-width: 100%;
      object-fit: contain;
    }
    .t-brand-empty {
      color: var(--ink-mute);
      font-size: .85rem;
      font-style: italic;
    }
    .t-brand-actions {
      display: flex; gap: .55rem; flex-wrap: wrap;
      margin-bottom: .65rem;
    }
    .t-brand-actions button {
      padding: .55rem 1rem;
      font-size: .82rem;
      font-weight: 600;
      border-radius: 8px;
      border: 1px solid var(--line);
      background: var(--card);
      color: var(--ink);
      cursor: pointer;
      font-family: var(--font-body);
      transition: border-color .15s, background .15s;
    }
    .t-brand-actions button:hover { border-color: var(--ink-mute); background: var(--bg-tint); }
    .t-brand-actions button.is-primary {
      background: var(--ink); color: var(--bg);
      border-color: var(--ink);
    }
    .t-brand-actions button.is-primary:hover { background: var(--ink-soft); border-color: var(--ink-soft); }
    .t-brand-actions button.is-danger {
      color: #C2563E;
      border-color: rgba(194,86,62,.3);
    }
    .t-brand-actions button.is-danger:hover { background: #FBEEE8; border-color: #C2563E; }
    .t-brand-actions button:disabled { opacity: .5; cursor: not-allowed; }
    .t-brand-hint {
      font-size: .76rem;
      color: var(--ink-mute);
      line-height: 1.45;
    }
    .t-brand-progress {
      margin-top: .3rem;
      height: 4px;
      background: var(--line-soft);
      border-radius: 2px;
      overflow: hidden;
      display: none;
    }
    .t-brand-progress.is-shown { display: block; }
    .t-brand-progress-bar {
      height: 100%;
      width: 0%;
      background: var(--gold);
      transition: width .15s linear;
    }

    .t-stats {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
    }
    .t-stat {
      padding: 1.1rem 1.2rem;
      background: var(--card); border: 1px solid var(--line);
      border-radius: var(--radius);
    }
    .t-stat-num {
      font-family: var(--font-display); font-size: 1.85rem; font-weight: 500;
      color: var(--ink); letter-spacing: -.015em; line-height: 1;
      margin-bottom: .35rem;
    }
    .t-stat-lbl {
      font-size: .72rem; font-weight: 700; letter-spacing: .14em;
      text-transform: uppercase; color: var(--ink-mute);
    }
    @media (max-width: 720px) {
      .t-stats { grid-template-columns: 1fr 1fr; }
      .t-grid { grid-template-columns: 1fr; }
      .t-course { flex-wrap: wrap; }
    }

    /* ── Course detail ────────────────────────────────────────────── */
    .c-meta-strip {
      display: grid; grid-template-columns: repeat(4, 1fr);
      gap: 0; margin: 1.5rem 0 0;
      background: var(--card); border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
    }
    .c-meta-cell {
      padding: .85rem 1.1rem;
      border-right: 1px solid var(--line);
    }
    .c-meta-cell:last-child { border-right: 0; }
    .c-meta-lbl {
      font-size: .68rem; font-weight: 700; letter-spacing: .12em;
      text-transform: uppercase; color: var(--ink-mute); margin-bottom: .25rem;
    }
    .c-meta-val {
      font-family: var(--font-display); font-size: 1.05rem; font-weight: 500;
      color: var(--ink);
    }

    .c-sections {
      display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
      gap: .7rem;
    }
    .c-section {
      display: flex; align-items: center; gap: 1rem;
      padding: 1rem 1.2rem;
      background: var(--card); border: 1px solid var(--line);
      border-left: 4px solid var(--accent, var(--ink));
      border-radius: var(--radius);
      cursor: pointer; transition: all .15s ease;
    }
    .c-section:hover {
      border-color: var(--accent, var(--ink));
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(26,22,16,.07);
    }
    .c-section-icon {
      width: 42px; height: 42px; border-radius: 10px;
      background: color-mix(in oklab, var(--accent, var(--ink)) 12%, var(--card));
      border: 1px solid color-mix(in oklab, var(--accent, var(--ink)) 25%, transparent);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.2rem; flex-shrink: 0;
    }
    .c-section-body { flex: 1; min-width: 0; }
    .c-section-name {
      font-family: var(--font-display); font-size: 1.02rem; font-weight: 500;
      color: var(--ink); letter-spacing: -.005em; margin-bottom: .15rem;
    }
    .c-section-desc {
      font-size: .82rem; color: var(--ink-soft); line-height: 1.45;
      overflow: hidden; text-overflow: ellipsis;
      display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical;
    }
    .c-section-meta {
      display: flex; align-items: center; gap: .6rem; flex-shrink: 0;
    }
    .c-section-count {
      font-size: .78rem; font-weight: 600;
      color: var(--ink-mute);
      padding: .2rem .55rem; border-radius: 99px;
      background: var(--line-soft);
      font-variant-numeric: tabular-nums;
    }
    .c-section-arrow { color: var(--ink-mute); }
    .c-section:hover .c-section-arrow { color: var(--accent, var(--ink)); }
    .c-section:hover .c-section-count { background: color-mix(in oklab, var(--accent, var(--ink)) 14%, var(--card)); color: var(--accent, var(--ink)); }

    @media (max-width: 720px) {
      .c-meta-strip { grid-template-columns: 1fr 1fr; }
      .c-meta-cell:nth-child(2) { border-right: 0; }
      .c-meta-cell:nth-child(1), .c-meta-cell:nth-child(2) { border-bottom: 1px solid var(--line); }
      .c-sections { grid-template-columns: 1fr; }
    }

    /* ── Editors panel (course detail) ─────────────────────────────── */
    .ed-panel {
      background: var(--card); border: 1px solid var(--line);
      border-radius: var(--radius); padding: 1.1rem 1.2rem;
    }
    .ed-blurb { font-size: .88rem; color: var(--ink-soft); margin: 0 0 .9rem; }
    .ed-list { display: flex; flex-direction: column; gap: .5rem; margin-bottom: .9rem; }
    .ed-empty {
      font-size: .85rem; color: var(--ink-mute); padding: .7rem .9rem;
      background: var(--line-soft); border-radius: 8px;
    }
    .ed-row {
      display: flex; align-items: center; gap: 1rem;
      padding: .65rem .9rem;
      background: var(--bg-soft, var(--line-soft)); border-radius: 8px;
    }
    .ed-row-main { flex: 1; min-width: 0; }
    .ed-row-email { font-size: .92rem; color: var(--ink); font-weight: 500; }
    .ed-row-name { font-size: .78rem; color: var(--ink-mute); margin-top: .1rem; }
    .ed-row-del { padding: .35rem .8rem; font-size: .78rem; flex-shrink: 0; }
    .ed-add { display: flex; gap: .5rem; }
    .ed-add input[type="email"] {
      flex: 1; min-width: 220px;
      padding: .55rem .9rem;
      background: var(--card); border: 1px solid var(--line); border-radius: 8px;
      font-size: .92rem; color: var(--ink);
    }
    .ed-add input[type="email"]:focus {
      outline: none; border-color: color-mix(in oklab, var(--accent, var(--ink)) 50%, var(--line));
    }
    .ed-msg { margin-top: .65rem; font-size: .82rem; min-height: 1.2em; }
    .ed-msg.is-pending { color: var(--ink-mute); }
    .ed-msg.is-ok      { color: #2e7d32; }
    .ed-msg.is-err     { color: #c62828; }

    /* "god only" section header tag */
    .t-section-h-tag {
      display: inline-block; margin-left: .55rem;
      padding: .12rem .55rem; border-radius: 999px;
      background: #b6863233; color: #8a6224;
      font-size: .68rem; font-weight: 600; letter-spacing: .04em;
      text-transform: uppercase; vertical-align: middle;
    }

    /* Course teachers panel — toggle row + commission row */
    .ct-toggle-row { margin-bottom: .9rem; }
    .ct-toggle {
      display: inline-flex; align-items: center; gap: .55rem;
      font-size: .9rem; color: var(--ink); cursor: pointer;
    }
    .ct-toggle input[type="checkbox"] { width: 16px; height: 16px; cursor: pointer; }
    .ct-commission-row {
      display: flex; align-items: center; gap: .55rem;
      margin-bottom: .9rem; flex-wrap: wrap;
    }
    .ct-commission-row .modal-label { margin: 0; }
    .ct-commission-row input[type="number"] {
      width: 90px; padding: .45rem .7rem;
      background: var(--card); border: 1px solid var(--line); border-radius: 8px;
      font-size: .92rem; color: var(--ink);
    }
    .ct-commission-msg { margin-top: 0; }


    /* ── Lessons list ─────────────────────────────────────────────── */
    .l-toolbar {
      display: flex; gap: .85rem; align-items: center; flex-wrap: wrap;
      margin-bottom: .85rem;
    }
    .l-search {
      flex: 1; min-width: 240px;
      padding: .65rem 1rem;
      background: var(--card);
      border: 1px solid var(--line); border-radius: 99px;
      font-family: inherit; font-size: .92rem; color: var(--ink);
    }
    .l-search:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px rgba(26,22,16,.06); }
    .l-filter-row {
      display: flex; gap: .35rem; flex-wrap: wrap; align-items: center;
      margin-bottom: .55rem;
    }
    .l-filter-row:last-of-type { margin-bottom: 1.1rem; }
    .l-filter-lbl {
      font-size: .68rem; font-weight: 700; letter-spacing: .12em;
      text-transform: uppercase; color: var(--ink-mute);
      margin-right: .5rem; min-width: 64px;
    }
    .l-chip {
      padding: .45rem .85rem; border-radius: 99px;
      background: var(--card); border: 1.5px solid var(--line);
      color: var(--ink-soft); font-family: inherit; font-size: .82rem; font-weight: 600;
      cursor: pointer; transition: all .14s ease;
    }
    .l-chip:hover { border-color: var(--c, var(--ink)); color: var(--c, var(--ink)); }
    .l-chip.is-active {
      background: var(--c, var(--ink)); border-color: var(--c, var(--ink)); color: #fff;
    }

    /* Lessons grid — card layout. Each card has a colored top stripe
       (category accent), serif title, 3-line description, and a footer
       with level + minutes pills. Compact enough to show many at once. */
    .l-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: .85rem;
    }
    .l-card {
      display: flex; flex-direction: column;
      padding: 1.1rem 1.15rem 1rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-top: 3px solid var(--c, var(--ink));
      border-radius: var(--radius);
      cursor: pointer;
      transition: transform .14s ease, box-shadow .14s ease, border-color .14s ease;
      min-height: 170px;
      position: relative;
    }
    .l-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 24px rgba(26,22,16,.08);
      border-color: color-mix(in oklab, var(--c, var(--ink)) 35%, var(--line));
    }
    .l-card-cat {
      font-size: .66rem; font-weight: 700; letter-spacing: .14em;
      text-transform: uppercase; color: var(--c, var(--ink));
      margin-bottom: .5rem;
    }
    .l-card-title {
      font-family: var(--font-display);
      font-size: 1.08rem; font-weight: 500;
      color: var(--ink); letter-spacing: -.005em;
      line-height: 1.3; margin-bottom: .45rem;
      overflow: hidden; text-overflow: ellipsis;
      display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    }
    .l-card-desc {
      flex: 1;
      font-size: .82rem; color: var(--ink-soft); line-height: 1.5;
      margin-bottom: .85rem;
      overflow: hidden; text-overflow: ellipsis;
      display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
    }
    .l-card-foot {
      display: flex; gap: .35rem; flex-wrap: wrap;
      padding-top: .55rem;
      border-top: 1px solid var(--line-soft);
    }
    .l-card-pill {
      font-size: .68rem; font-weight: 700; letter-spacing: .04em;
      padding: .22rem .55rem; border-radius: 99px;
      background: color-mix(in oklab, var(--c, var(--ink)) 12%, var(--card));
      color: var(--c, var(--ink));
      border: 1px solid color-mix(in oklab, var(--c, var(--ink)) 28%, transparent);
    }
    .l-card-pill-mute {
      background: var(--line-soft); color: var(--ink-mute); border-color: var(--line);
    }
    @media (max-width: 520px) {
      .l-grid { grid-template-columns: 1fr; }
    }

    /* ───────────────────────────────────────────────────────────────────
       CLASS PAGE  (god/teacher subscription mgmt — rendered into #stub-body)
       Hash route #class/{tenant}/{course}
       ─────────────────────────────────────────────────────────────────── */
    .stub-body.is-class {
      display: block;
      align-items: stretch;
      justify-content: stretch;
      padding: 2rem 1.6rem 4rem;
    }
    .class-page {
      max-width: 1100px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1.4rem;
    }
    .class-header {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .class-eyebrow {
      font-size: .7rem;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--gold);
      font-weight: 700;
      margin-bottom: .35rem;
    }
    .class-h1 {
      font-family: var(--font-display);
      font-size: 1.65rem;
      font-weight: 500;
      color: var(--ink);
      margin: 0;
      line-height: 1.2;
    }
    .class-h-sub {
      margin-top: .35rem;
      font-size: .9rem;
      color: var(--ink-soft);
    }
    .class-h-actions {
      display: flex;
      gap: .55rem;
      flex-wrap: wrap;
    }
    .class-h-btn {
      display: inline-flex;
      align-items: center;
      gap: .4rem;
      padding: .6rem 1.1rem;
      border-radius: 999px;
      background: var(--ink);
      color: var(--bg);
      border: 1px solid var(--ink);
      font-size: .88rem;
      font-weight: 600;
      cursor: pointer;
      text-decoration: none;
      transition: background .15s, transform .15s;
    }
    .class-h-btn:hover { background: var(--accent-warm); border-color: var(--accent-warm); transform: translateY(-1px); }
    .class-h-btn.is-ghost {
      background: transparent; color: var(--ink); border-color: var(--line);
    }
    .class-h-btn.is-ghost:hover { background: var(--line-soft); border-color: var(--ink-mute); transform: none; }

    .class-stats {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 1rem;
    }
    .class-stat {
      background: var(--bg-tint);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 1.1rem 1.3rem;
    }
    .class-stat-label {
      font-size: .7rem;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--ink-mute);
      font-weight: 700;
    }
    .class-stat-value {
      font-family: var(--font-display);
      font-size: 1.7rem;
      color: var(--ink);
      font-weight: 500;
      line-height: 1.1;
      margin-top: .25rem;
    }
    .class-stat-value .ccy { font-size: .9rem; color: var(--ink-soft); margin-left: .25rem; font-family: var(--font-body); }
    .class-stat-sub { font-size: .8rem; color: var(--ink-soft); margin-top: .2rem; }

    .class-filters {
      display: flex;
      gap: .55rem;
      flex-wrap: wrap;
      align-items: center;
      padding: .85rem 1rem;
      background: var(--bg-tint);
      border: 1px solid var(--line);
      border-radius: var(--radius);
    }
    .class-filters input[type="search"] {
      flex: 1;
      min-width: 180px;
      padding: .55rem .85rem;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: #fff;
      font-family: var(--font-body);
      font-size: .9rem;
      color: var(--ink);
    }
    .class-filters input[type="search"]:focus { outline: none; border-color: var(--accent-warm); }
    .class-filters select {
      padding: .55rem .85rem;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: #fff;
      font-size: .85rem;
      color: var(--ink);
      cursor: pointer;
    }

    .class-table {
      background: var(--bg-tint);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .class-table-h {
      display: grid;
      grid-template-columns: minmax(180px,2fr) 1fr 1.2fr 1fr 1fr 1fr;
      gap: 1rem;
      padding: .85rem 1.2rem;
      background: var(--line-soft);
      font-size: .7rem;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--ink-mute);
      font-weight: 700;
    }
    .class-row {
      display: grid;
      grid-template-columns: minmax(180px,2fr) 1fr 1.2fr 1fr 1fr 1fr;
      gap: 1rem;
      padding: .9rem 1.2rem;
      align-items: center;
      border-top: 1px solid var(--line-soft);
      font-size: .88rem;
    }
    .class-row:hover { background: rgba(184,146,58,.04); }
    .class-row .cell-email { font-weight: 500; color: var(--ink); }
    .class-row .cell-email-sub { font-size: .76rem; color: var(--ink-soft); margin-top: .15rem; }
    .class-row .cell-muted { color: var(--ink-soft); font-variant-numeric: tabular-nums; }
    .class-row .cell-actions {
      display: flex; gap: .35rem; justify-content: flex-end;
    }
    .class-row .cell-actions button {
      padding: .35rem .65rem;
      border-radius: 8px;
      border: 1px solid var(--line);
      background: transparent;
      color: var(--ink-soft);
      font-size: .76rem;
      font-weight: 600;
      cursor: pointer;
      white-space: nowrap;
    }
    .class-row .cell-actions button:hover { color: var(--ink); border-color: var(--ink-mute); }
    .class-row .cell-actions button.is-danger { color: #B6442C; border-color: rgba(182,68,44,.3); }
    .class-row .cell-actions button.is-danger:hover { background: rgba(182,68,44,.08); border-color: #B6442C; }

    /* Past (non-current) sub rows: muted styling so they don't compete
       visually with active/grace rows when the operator has Show past on. */
    .class-row.is-past { opacity: .65; }
    .class-row.is-past:hover { opacity: 1; }

    /* Chevron toggle for the audit-history disclosure */
    .class-row .cell-history-btn {
      padding: .35rem .55rem !important;
      font-size: .9rem !important;
      transition: transform .15s ease;
    }
    .class-row .cell-history-btn.is-open { transform: rotate(180deg); }

    /* Audit history panel — sibling of the row; full table width */
    .class-row-history {
      padding: 1rem 1.4rem 1.2rem;
      border-top: 1px dashed var(--line);
      background: rgba(184,146,58,.03);
      font-size: .85rem;
    }
    .class-row-history-h {
      font-size: .68rem;
      font-weight: 700;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--ink-mute);
      margin-bottom: .7rem;
    }
    .class-row-history-empty { color: var(--ink-soft); font-style: italic; font-size: .85rem; }
    .hist-entry {
      padding: .55rem 0;
      border-bottom: 1px solid var(--line-soft);
    }
    .hist-entry:last-child { border-bottom: 0; }
    .hist-action {
      font-weight: 600;
      color: var(--ink);
      font-size: .88rem;
      text-transform: capitalize;
    }
    .hist-meta {
      font-size: .76rem;
      color: var(--ink-soft);
      margin-top: .15rem;
    }
    .hist-detail {
      font-size: .82rem;
      color: var(--ink-soft);
      margin-top: .2rem;
    }

    /* Show past checkbox in filter bar */
    .class-show-past {
      display: inline-flex;
      align-items: center;
      gap: .45rem;
      font-size: .85rem;
      color: var(--ink-soft);
      cursor: pointer;
      user-select: none;
    }
    .class-show-past input[type="checkbox"] { margin: 0; cursor: pointer; }
    .class-show-past:hover { color: var(--ink); }

    /* Status pills inside the table — reuse profile-sub-status visuals */
    .class-status {
      display: inline-flex;
      align-items: center;
      gap: .35rem;
      font-size: .7rem;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
      padding: .2rem .5rem;
      border-radius: 999px;
      white-space: nowrap;
    }
    .class-status.is-active    { background: rgba(92,138,106,.14); color: #3F6B4E; }
    .class-status.is-grace     { background: rgba(214,118,89,.14); color: var(--accent-warm); }
    .class-status.is-expired,
    .class-status.is-cancelled { background: rgba(150,138,117,.18); color: var(--ink-soft); }
    .class-status.is-refunded  { background: rgba(182,68,44,.12); color: #B6442C; }
    .class-status.is-pending   { background: var(--line-soft); color: var(--ink-soft); }
    .class-status.is-trial     { background: rgba(184,146,58,.18); color: var(--gold); }

    .class-empty {
      padding: 3rem 1.6rem;
      text-align: center;
      color: var(--ink-soft);
    }
    .class-empty-icon {
      width: 56px; height: 56px;
      margin: 0 auto 1rem;
      border-radius: 50%;
      background: var(--line-soft);
      color: var(--ink-mute);
      display: flex; align-items: center; justify-content: center;
    }
    .class-empty-icon svg { width: 24px; height: 24px; }

    /* Mobile: collapse table to cards */
    @media (max-width: 880px) {
      .class-table-h { display: none; }
      .class-row {
        grid-template-columns: 1fr;
        gap: .35rem;
        padding: 1rem 1.1rem;
      }
      .class-row .cell-actions { justify-content: flex-start; flex-wrap: wrap; }
      .class-row [data-mobile-label]::before {
        content: attr(data-mobile-label) ': ';
        font-size: .7rem;
        text-transform: uppercase;
        letter-spacing: .08em;
        color: var(--ink-mute);
        font-weight: 700;
        margin-right: .4rem;
      }
    }

    /* Class deny state for non-god users (when self-study students hit /class) */
    .class-deny {
      padding: 3rem 1.6rem;
      text-align: center;
      max-width: 480px;
      margin: 0 auto;
    }

    /* Revenue history — last N months bucketed from sub docs */
    .class-history {
      background: var(--bg-tint);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 1.4rem 1.6rem;
    }
    .class-history-h {
      display: flex; align-items: baseline; justify-content: space-between;
      gap: .8rem;
      margin-bottom: 1rem;
    }
    .class-history-h h3 {
      font-family: var(--font-display);
      font-size: 1.05rem;
      font-weight: 500;
      margin: 0;
      color: var(--ink);
    }
    .class-history-h .sub {
      font-size: .78rem;
      color: var(--ink-soft);
    }
    .class-history-list {
      display: flex; flex-direction: column;
    }
    .class-history-row {
      display: grid;
      grid-template-columns: minmax(110px,1fr) minmax(80px,90px) minmax(120px,1fr) minmax(110px,140px);
      gap: 1rem;
      align-items: center;
      padding: .65rem 0;
      border-top: 1px solid var(--line-soft);
      font-size: .85rem;
    }
    .class-history-row:first-child { border-top: none; }
    .class-history-row.is-current { background: rgba(184,146,58,.06); margin: 0 -.6rem; padding: .65rem .6rem; border-radius: 6px; }
    .class-history-row.is-current + .class-history-row { border-top: 1px solid var(--line-soft); }
    .class-history-month {
      font-weight: 600;
      color: var(--ink);
    }
    .class-history-month .yr { color: var(--ink-mute); font-weight: 500; margin-left: .25rem; font-size: .78rem; }
    .class-history-count { color: var(--ink-soft); font-variant-numeric: tabular-nums; font-size: .8rem; }
    .class-history-bar-wrap {
      position: relative;
      height: 8px;
      background: var(--line-soft);
      border-radius: 999px;
      overflow: hidden;
    }
    .class-history-bar-fill {
      position: absolute;
      top: 0; bottom: 0; left: 0;
      background: var(--read-right);
      border-radius: 999px;
    }
    .class-history-bar-refund {
      position: absolute;
      top: 0; bottom: 0;
      background: rgba(182,68,44,.5);
      border-radius: 999px;
    }
    .class-history-net {
      text-align: right;
      font-family: var(--font-display);
      font-size: 1rem;
      color: var(--ink);
      font-variant-numeric: tabular-nums;
    }
    .class-history-net .ccy { font-size: .76rem; color: var(--ink-soft); margin-left: .25rem; font-family: var(--font-body); }
    .class-history-net.is-zero { color: var(--ink-mute); }
    .class-history-net .refund {
      display: block;
      font-family: var(--font-body);
      font-size: .72rem;
      color: #B6442C;
      margin-top: .15rem;
    }
    @media (max-width: 720px) {
      .class-history-row { grid-template-columns: 1fr 1fr; gap: .35rem .8rem; }
      .class-history-bar-wrap { grid-column: 1 / -1; }
      .class-history-net { text-align: left; }
    }

    /* ── Class list (on tenant detail) ──────────────────────────── */
    .t-classes {
      display: flex; flex-direction: column; gap: .55rem;
      margin-bottom: 1.5rem;
    }
    .t-class {
      display: flex; align-items: center; gap: 1rem;
      padding: 1rem 1.1rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 12px;
      text-decoration: none; color: inherit;
      transition: border-color .15s, transform .12s, box-shadow .15s;
    }
    .t-class:hover {
      border-color: var(--ink);
      transform: translateY(-1px);
      box-shadow: var(--shadow-sm);
    }
    .t-class-mark {
      width: 38px; height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, #d49a4d 0%, #b07930 100%);
      color: var(--bg);
      font-size: 1.2rem;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }
    .t-class-body { flex: 1; min-width: 0; }
    .t-class-row {
      display: flex; align-items: center; gap: .65rem;
      margin-bottom: .15rem;
    }
    .t-class-name {
      font-weight: 600; color: var(--ink);
      font-size: 1rem;
    }
    .t-class-mode {
      font-size: .68rem; font-weight: 700;
      letter-spacing: .08em; text-transform: uppercase;
      padding: .15rem .5rem; border-radius: 99px;
    }
    .t-class-mode.is-group {
      background: rgba(76,134,82,.14); color: #4C8652;
      border: 1px solid rgba(76,134,82,.32);
    }
    .t-class-mode.is-indiv {
      background: rgba(192,138,62,.14); color: #b07930;
      border: 1px solid rgba(192,138,62,.32);
    }
    .t-class-meta {
      font-size: .82rem; color: var(--ink-soft);
      display: flex; align-items: center; gap: .5rem;
    }
    .t-class-dot {
      width: 3px; height: 3px; border-radius: 50%;
      background: var(--ink-mute); opacity: .5;
    }
    .t-class-arrow {
      color: var(--ink-mute);
      font-size: 1.2rem;
      flex-shrink: 0;
    }
    .t-class-row-wrap {
      display: flex;
      align-items: stretch;
      gap: .55rem;
    }
    .t-class-row-wrap .t-class { flex: 1; min-width: 0; }
    .t-class-portal-btn {
      display: inline-flex;
      align-items: center;
      padding: 0 1rem;
      border-radius: 12px;
      background: var(--card);
      border: 1px solid var(--line);
      color: var(--ink-soft);
      font-size: .82rem;
      font-weight: 600;
      text-decoration: none;
      flex-shrink: 0;
      transition: border-color .15s, color .15s, background .15s;
    }
    .t-class-portal-btn:hover {
      border-color: var(--ink);
      color: var(--ink);
      background: var(--bg-tint);
    }

    /* Mode toggle in create modal */
    .t-mode-toggle {
      display: flex; gap: .5rem;
    }
    .t-mode-opt {
      flex: 1;
      display: flex; align-items: center; justify-content: center;
      gap: .4rem;
      padding: .65rem .8rem;
      background: var(--bg-tint, #f4ecdc);
      border: 1px solid var(--line);
      border-radius: 10px;
      cursor: pointer;
      font-size: .9rem;
      transition: border-color .12s, background .12s;
    }
    .t-mode-opt:has(input:checked) {
      background: var(--card);
      border-color: var(--ink);
      font-weight: 600;
    }
    .t-mode-opt input { margin: 0; }

    /* ── Class detail shell ────────────────────────────────────── */
    body.is-class-shell .stub-body.is-class-detail {
      padding: 0;
      max-width: none;
    }
    .cls-loading,
    .cls-empty {
      padding: 3rem 2rem;
      text-align: center;
      color: var(--ink-soft);
    }
    .cls-empty h3 {
      font-family: var(--font-display);
      font-size: 1.4rem;
      color: var(--ink);
      margin: 0 0 .5rem;
    }
    .cls-shell {
      display: grid;
      grid-template-columns: 240px 1fr;
      min-height: calc(100vh - 64px);
      max-width: 1280px;
      margin: 0 auto;
    }
    .cls-side {
      border-right: 1px solid var(--line);
      padding: 1.5rem 0 1.5rem 1.5rem;
    }
    .cls-side-code {
      font-family: 'SF Mono', Menlo, monospace;
      font-size: .68rem;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: var(--ink-mute);
      font-weight: 600;
      margin-bottom: .35rem;
    }
    .cls-side-h {
      display: flex; align-items: flex-start; gap: .35rem;
      padding-right: 1rem;
      margin-bottom: .35rem;
    }
    .cls-side-name {
      font-family: var(--font-display);
      font-size: 1.25rem;
      font-weight: 500;
      color: var(--ink);
      letter-spacing: -.005em;
      line-height: 1.25;
      flex: 1;
      min-width: 0;
      word-break: break-word;
    }
    .cls-side-name-input {
      flex: 1;
      font-family: var(--font-display);
      font-size: 1.25rem;
      font-weight: 500;
      color: var(--ink);
      background: var(--bg-tint, #f4ecdc);
      border: 1px solid var(--brand-accent, #c08a3e);
      border-radius: 6px;
      padding: .15rem .4rem;
      outline: none;
      width: 100%;
    }
    .cls-side-rename {
      background: transparent;
      border: none;
      color: var(--ink-soft);
      font-size: .9rem;
      cursor: pointer;
      padding: .25rem .4rem;
      border-radius: 6px;
      margin-top: .3rem;
      flex-shrink: 0;
      opacity: .55;
      transition: opacity .12s, background .12s;
    }
    .cls-side-rename:hover {
      opacity: 1;
      background: var(--line-soft);
    }
    .cls-side-meta {
      font-size: .8rem;
      color: var(--ink-soft);
      padding-right: 1rem;
      margin-bottom: 1.4rem;
    }
    .cls-mode {
      display: inline-block;
      font-size: .65rem; font-weight: 700;
      letter-spacing: .08em; text-transform: uppercase;
      padding: .12rem .45rem; border-radius: 99px;
      margin-right: .25rem;
    }
    .cls-mode.is-group { background: rgba(76,134,82,.14); color: #4C8652; border: 1px solid rgba(76,134,82,.32); }
    .cls-mode.is-indiv { background: rgba(192,138,62,.14); color: #b07930; border: 1px solid rgba(192,138,62,.32); }

    .cls-nav {
      display: flex; flex-direction: column;
      padding-right: .5rem;
    }
    .cls-nav-item {
      display: flex; align-items: center; gap: .65rem;
      padding: .6rem .75rem;
      border-radius: 8px;
      text-decoration: none;
      color: var(--ink-soft);
      font-size: .92rem;
      font-weight: 500;
      transition: background .12s, color .12s;
    }
    .cls-nav-item:hover { background: var(--line-soft); color: var(--ink); }
    .cls-nav-item.is-active {
      background: var(--ink);
      color: var(--bg);
    }
    .cls-nav-icon {
      width: 18px; text-align: center;
      font-size: 1rem;
      opacity: .85;
    }
    .cls-main {
      padding: 1.5rem 2rem;
      min-width: 0;
    }
    .cls-page { max-width: 720px; }
    .cls-page-h { margin-bottom: 1.5rem; }
    .cls-page-h h1 {
      font-family: var(--font-display);
      font-size: 1.75rem; font-weight: 500;
      color: var(--ink);
      margin: 0;
      letter-spacing: -.005em;
    }
    .cls-overview-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: .85rem;
      margin-bottom: 2rem;
    }
    .cls-stat {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 12px;
      padding: 1.1rem 1.2rem;
    }
    .cls-stat-num {
      font-family: var(--font-display);
      font-size: 1.6rem;
      font-weight: 500;
      color: var(--ink);
      line-height: 1.1;
    }
    .cls-stat-lbl {
      font-size: .78rem; color: var(--ink-soft);
      margin-top: .25rem;
      text-transform: uppercase;
      letter-spacing: .08em;
      font-weight: 600;
    }
    .cls-section-h {
      font-family: var(--font-display);
      font-size: 1.1rem; font-weight: 500;
      color: var(--ink);
      margin: 1.5rem 0 .75rem;
      padding-bottom: .5rem;
      border-bottom: 1px solid var(--line);
    }
    .cls-schedule-empty {
      padding: 1.25rem 1.4rem;
      background: var(--bg-tint, #f4ecdc);
      border-radius: 10px;
      color: var(--ink-soft);
      font-size: .9rem;
    }
    .cls-actions {
      display: flex; gap: .5rem; flex-wrap: wrap;
    }
    .cls-student-list {
      display: flex; flex-direction: column; gap: .4rem;
      margin-top: .6rem;
    }
    .cls-student-row {
      display: flex; align-items: center; gap: .65rem;
      padding: .55rem .85rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 10px;
      font-size: .88rem;
    }
    .cls-student-uid {
      flex: 1;
      font-family: 'SF Mono', Menlo, monospace;
      font-size: .78rem;
      color: var(--ink-soft);
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .cls-student-remove {
      background: transparent;
      border: 1px solid var(--line);
      color: var(--ink-soft);
      width: 26px; height: 26px;
      border-radius: 50%;
      font-size: 1rem;
      line-height: 1;
      cursor: pointer;
      transition: color .12s, border-color .12s, background .12s;
    }
    .cls-student-remove:hover {
      color: #b04444;
      border-color: rgba(176,68,68,.4);
      background: rgba(176,68,68,.06);
    }

    /* Stub pages (Slice 4 placeholders) */
    .cls-stub {
      display: flex; flex-direction: column; align-items: center;
      text-align: center;
      padding: 4rem 1rem;
      color: var(--ink-soft);
    }
    .cls-stub-icon {
      font-size: 2.6rem;
      opacity: .4;
      margin-bottom: 1rem;
    }
    .cls-stub h2 {
      font-family: var(--font-display);
      font-size: 1.4rem; font-weight: 500;
      color: var(--ink);
      margin: 0 0 .55rem;
    }
    .cls-stub p {
      max-width: 36ch; line-height: 1.55;
    }

    @media (max-width: 760px) {
      .cls-shell { grid-template-columns: 1fr; }
      .cls-side {
        border-right: none;
        border-bottom: 1px solid var(--line);
        padding: 1rem 1rem .75rem;
      }
      .cls-nav {
        flex-direction: row; flex-wrap: wrap; gap: .25rem;
      }
      .cls-main { padding: 1rem; }
    }

    /* ── People (headmasters + teachers) ────────────────────────── */
    .t-section-h {
      display: flex;
      align-items: baseline;
      gap: .65rem;
      flex-wrap: wrap;
    }
    .t-section-add {
      margin-left: auto;
      font-size: .82rem;
      padding: .45rem .9rem;
    }
    .t-people {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: .65rem;
      margin-bottom: 1.5rem;
    }
    .t-person {
      display: flex; align-items: center; gap: .8rem;
      padding: .75rem .95rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 10px;
      transition: border-color .15s;
    }
    .t-person:hover { border-color: var(--ink-soft); }
    .t-person-mark {
      width: 36px; height: 36px;
      border-radius: 50%;
      background: linear-gradient(135deg, #d49a4d 0%, #b07930 100%);
      color: var(--bg);
      font-family: var(--font-display);
      font-size: 1rem;
      font-weight: 600;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.18);
    }
    .t-person-body { min-width: 0; flex: 1; }
    .t-person-name {
      font-weight: 600; color: var(--ink);
      font-size: .95rem; line-height: 1.2;
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    }
    .t-person-email {
      font-size: .78rem; color: var(--ink-soft);
      font-family: 'SF Mono', Menlo, monospace;
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
      margin-top: .15rem;
    }
    .t-people-empty {
      padding: 1.5rem;
      margin-bottom: 1.5rem;
    }
    .t-person-remove {
      background: transparent;
      border: 1px solid var(--line);
      color: var(--ink-soft);
      width: 28px; height: 28px;
      border-radius: 50%;
      font-size: 1.05rem;
      line-height: 1;
      cursor: pointer;
      flex-shrink: 0;
      opacity: .55;
      transition: opacity .12s, color .12s, border-color .12s, background .12s;
    }
    .t-person:hover .t-person-remove { opacity: 1; }
    .t-person-remove:hover {
      color: #b04444;
      border-color: rgba(176, 68, 68, 0.4);
      background: rgba(176, 68, 68, 0.06);
    }

    /* ── Role-based sidebar visibility ──────────────────────────── */
    /* God: full sidebar. Headmaster: no sidebar at all (only one item
       would live there — pointless). Default to god view until auth
       resolves so god doesn't see a flicker. */

    /* ── Decks catalogue ────────────────────────────────────────── */
    .deck-card { text-decoration: none; }
    .deck-card-mark {
      width: 44px; height: 44px; border-radius: 12px;
      background: linear-gradient(135deg, #d49a4d 0%, #b07930 100%);
      color: var(--bg);
      font-size: 1.5rem;
      display: flex; align-items: center; justify-content: center;
      margin-bottom: .35rem;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.18), 0 2px 6px rgba(192,138,62,.25);
    }
    .deck-count {
      font-family: 'SF Mono', Menlo, monospace; font-size: .76rem;
      color: var(--ink-mute);
    }
    .deck-level {
      font-size: .68rem; font-weight: 700; letter-spacing: .08em;
      text-transform: uppercase; padding: .18rem .5rem; border-radius: 99px;
      background: rgba(192,138,62,.14); color: #b07930;
      border: 1px solid rgba(192,138,62,.32);
    }

    /* Deck detail */
    .deck-section { margin-bottom: 2rem; }
    .deck-section-h {
      display: flex; align-items: center; justify-content: space-between;
      gap: .65rem;
      margin-bottom: .35rem; padding-bottom: .5rem;
      border-bottom: 1px solid var(--line);
    }
    .deck-section-h-l { display: flex; align-items: baseline; gap: .65rem; }
    .deck-section-h h3 {
      font-family: var(--font-display); font-size: 1.2rem; font-weight: 500;
      margin: 0; color: var(--ink); letter-spacing: -.005em;
    }
    .deck-section-count {
      font-family: 'SF Mono', Menlo, monospace; font-size: .8rem;
      color: var(--ink-mute); font-weight: 500;
    }
    .deck-section-add { font-size: .82rem; padding: .35rem .75rem; }
    .deck-section-sub {
      color: var(--ink-soft); font-size: .82rem; line-height: 1.5;
      margin: 0 0 .85rem;
    }
    .deck-section-empty {
      color: var(--ink-mute); font-size: .85rem; line-height: 1.5;
      padding: 1.25rem 1rem;
      background: var(--bg-tint, #f4ecdc);
      border: 1px dashed var(--line); border-radius: 10px;
    }
    .deck-item-arrow {
      color: var(--ink-mute); font-size: 1.05rem;
      align-self: flex-end;
      opacity: 0;
      transition: opacity .15s, transform .15s;
    }
    .deck-item:hover .deck-item-arrow { opacity: 1; transform: translateX(2px); }
    .deck-section + .deck-section { margin-top: 2.4rem; }
    .deck-items {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: .55rem;
    }
    .deck-item {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 10px;
      padding: .85rem 1rem;
      cursor: pointer;
      transition: border-color .15s, transform .12s, box-shadow .15s;
      display: flex; flex-direction: column; gap: .15rem;
      min-height: 0;
    }
    .deck-item:hover {
      border-color: var(--ink);
      transform: translateY(-1px);
      box-shadow: var(--shadow-sm);
    }
    .deck-item-id {
      font-family: 'SF Mono', Menlo, monospace; font-size: .68rem;
      color: var(--ink-mute); letter-spacing: .02em;
    }
    .deck-item-primary {
      font-weight: 600; color: var(--ink);
      font-size: .98rem; line-height: 1.3;
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .deck-item-secondary {
      font-size: .82rem; color: var(--ink-soft); line-height: 1.4;
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }

    /* Item modal */
    .deck-item-json {
      background: var(--bg-tint, #f4ecdc);
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 1rem;
      font-family: 'SF Mono', Menlo, monospace;
      font-size: .78rem;
      line-height: 1.55;
      color: var(--ink);
      max-height: 460px;
      overflow: auto;
      white-space: pre-wrap;
      word-break: break-word;
    }
    .deck-form-grid {
      display: flex; flex-direction: column; gap: .8rem;
      max-height: 60vh; overflow-y: auto; padding: .25rem 0;
    }
    .modal-actions {
      display: flex; justify-content: flex-end; gap: .55rem;
      margin-top: 1.25rem; padding-top: .85rem;
      border-top: 1px solid var(--line-soft);
    }

    /* ─────────────────────────────────────────────────────────────────
       Bundle editor (admin-bundles.js)
       ───────────────────────────────────────────────────────────────── */
    .ab-page-h {
      display: flex; align-items: flex-start; justify-content: space-between;
      gap: 1.5rem; flex-wrap: wrap;
    }
    .ab-page-desc {
      max-width: 640px;
      color: var(--ink-soft);
      font-size: .92rem; line-height: 1.5;
      margin: .55rem 0 0;
    }
    .ab-new-btn { flex-shrink: 0; }

    /* List */
    .ab-list { margin-top: 1.4rem; }
    .ab-table { display: flex; flex-direction: column; gap: .55rem; }
    .ab-row {
      display: grid;
      grid-template-columns: 180px 1fr 160px 100px 24px;
      gap: 1rem; align-items: center;
      padding: .85rem 1.1rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 10px;
      text-decoration: none; color: inherit;
      transition: border-color .15s, transform .12s;
    }
    .ab-row:hover { border-color: var(--ink-mute); transform: translateY(-1px); }
    .ab-row-id {
      font-family: monospace, monospace;
      font-size: .82rem; color: var(--ink-mute);
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .ab-row-primary {
      font-weight: 600; color: var(--ink); font-size: .94rem;
      overflow: hidden; text-overflow: ellipsis;
      display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical;
    }
    .ab-row-secondary {
      font-size: .82rem; color: var(--ink-soft);
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .ab-row-tertiary {
      font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
      color: var(--ink-mute); font-weight: 700;
    }
    .ab-row-arrow { color: var(--ink-mute); }
    @media (max-width: 800px) {
      .ab-row { grid-template-columns: 1fr 24px; }
      .ab-row-id, .ab-row-secondary, .ab-row-tertiary { display: none; }
    }
    .ab-list-foot {
      text-align: right; margin-top: .8rem;
      font-size: .8rem; color: var(--ink-mute);
    }

    /* Form */
    .ab-form {
      max-width: 720px;
      margin-top: 1.4rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 12px;
      padding: 1.6rem 1.8rem 1.8rem;
    }
    .ab-field { margin-bottom: 1.1rem; }
    .ab-section-h {
      font-family: var(--font-display);
      font-size: 1.05rem; font-weight: 700;
      color: var(--ink);
      margin: 1.6rem 0 .8rem;
      padding-bottom: .4rem;
      border-bottom: 1px solid var(--line-soft);
    }
    .ab-section-h:first-child { margin-top: 0; }
    .ab-field-l {
      display: block;
      font-size: .75rem; letter-spacing: .08em; text-transform: uppercase;
      font-weight: 700; color: var(--ink-mute);
      margin-bottom: .35rem;
    }
    .ab-field-req { color: var(--accent-warm); margin-left: .15rem; }
    .ab-field-help {
      margin-top: .35rem;
      font-size: .78rem; color: var(--ink-mute);
      font-style: italic; line-height: 1.5;
    }
    .ab-input, .ab-textarea {
      width: 100%;
      padding: .65rem .85rem;
      background: var(--bg-tint);
      border: 1.5px solid var(--line);
      border-radius: 8px;
      font-family: var(--font-body);
      font-size: .92rem; color: var(--ink);
      box-sizing: border-box;
    }
    .ab-textarea {
      font-family: var(--font-display);
      font-size: 1rem; line-height: 1.55;
      resize: vertical; min-height: 88px;
    }
    .ab-textarea-mono {
      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
      font-size: .82rem; line-height: 1.5;
      tab-size: 2;
    }

    /* Image-upload field (chartImageUrl, etc.) */
    .ab-image {
      display: flex;
      flex-direction: column;
      gap: .65rem;
    }
    .ab-image-preview {
      width: 100%;
      max-width: 460px;
      min-height: 120px;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--bg-tint);
      overflow: hidden;
      display: flex; align-items: center; justify-content: center;
    }
    .ab-image-preview.is-empty {
      border-style: dashed;
      color: var(--ink-mute);
    }
    .ab-image-preview img {
      display: block;
      max-width: 100%;
      max-height: 320px;
      object-fit: contain;
      background: #fff;
    }
    .ab-image-empty-l {
      font-size: .85rem;
      color: var(--ink-mute);
      font-style: italic;
    }
    .ab-image-controls {
      display: flex; align-items: center; gap: .55rem;
      flex-wrap: wrap;
    }
    .ab-image-controls .admin-btn { cursor: pointer; }
    .ab-image-progress {
      font-size: .82rem;
      color: var(--ink-soft);
      font-weight: 600;
    }
    .ab-input:focus, .ab-textarea:focus { outline: none; border-color: var(--ink-mute); }
    .ab-input:disabled { opacity: .55; cursor: not-allowed; }
    .ab-input-narrow { max-width: 130px; }

    /* Tags */
    .ab-tags {
      padding: .45rem .55rem;
      background: var(--bg-tint);
      border: 1.5px solid var(--line);
      border-radius: 8px;
    }
    .ab-tag-chips { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: .4rem; }
    .ab-tag {
      display: inline-flex; align-items: center; gap: .35rem;
      padding: .25rem .65rem;
      background: var(--ink); color: var(--bg);
      border-radius: 999px;
      font-size: .82rem; font-weight: 600;
    }
    .ab-tag-x {
      background: transparent; border: none; color: inherit;
      opacity: .65; cursor: pointer; padding: 0;
      font-size: 1rem; line-height: 1;
    }
    .ab-tag-x:hover { opacity: 1; }
    .ab-tag-input {
      width: 100%;
      padding: .35rem;
      background: transparent; border: none;
      font-family: var(--font-body);
      font-size: .9rem; color: var(--ink);
    }
    .ab-tag-input:focus { outline: none; }

    /* Choices (sentence-upgrade) */
    .ab-choices { display: flex; flex-direction: column; gap: .55rem; }
    .ab-choice-row {
      display: grid;
      grid-template-columns: 130px 1fr;
      gap: .65rem; align-items: center;
    }
    @media (max-width: 700px) { .ab-choice-row { grid-template-columns: 1fr; } }
    .ab-choice-radio {
      display: inline-flex; align-items: center; gap: .4rem;
      padding: .55rem .7rem;
      background: var(--bg-tint);
      border: 1px solid var(--line);
      border-radius: 8px;
      font-size: .82rem; font-weight: 600;
      color: var(--ink-soft);
      cursor: pointer;
    }
    .ab-choice-radio input[type=radio]:checked + span { color: var(--accent-warm); }

    .ab-form-actions {
      display: flex; justify-content: flex-end; gap: .55rem;
      flex-wrap: wrap;
      margin-top: 1.5rem;
      padding-top: 1.2rem;
      border-top: 1px solid var(--line-soft);
    }
    .admin-btn.is-primary { background: var(--ink); color: var(--bg); }
    .admin-btn.is-primary:hover {
      background: var(--ink); border-color: var(--ink);
      transform: translateY(-1px);
    }
    .admin-btn.is-danger {
      color: #B6442C;
      border-color: rgba(182, 68, 44, .35);
    }
    .admin-btn.is-danger:hover {
      background: rgba(182, 68, 44, .1);
      color: #B6442C;
      border-color: #B6442C;
    }
    .ab-form-msg {
      margin-top: .8rem;
      font-size: .85rem;
      color: var(--ink-soft);
      text-align: right;
    }


    /* ─── Deck item modal (redesigned, replaces .modal-actions/deck-form-grid for items) ─── */
    .deck-modal-bg {
      position: fixed; inset: 0;
      background: rgba(20,15,10,0.5);
      display: flex; align-items: flex-start; justify-content: center;
      padding: 4vh 1.5rem;
      z-index: 200;
      overflow-y: auto;
      backdrop-filter: blur(2px);
      -webkit-backdrop-filter: blur(2px);
      animation: dkFade .15s ease-out;
    }
    @keyframes dkFade { from { opacity: 0; } to { opacity: 1; } }
    .dk-modal {
      width: 100%; max-width: 640px;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 18px;
      box-shadow: 0 24px 56px -16px rgba(0,0,0,0.28);
      overflow: hidden;
      animation: dkLift .18s ease-out;
    }
    @keyframes dkLift {
      from { opacity: 0; transform: translateY(8px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    .dk-modal-h {
      display: flex; align-items: center; justify-content: space-between;
      gap: 1rem;
      padding: 1.1rem 1.5rem;
      background: var(--bg-tint, #f4ecdc);
      border-bottom: 1px solid var(--line);
    }
    .dk-modal-h-l { display: flex; align-items: center; gap: .85rem; min-width: 0; }
    .dk-type-pill {
      width: 36px; height: 36px;
      border-radius: 10px;
      color: #fff; font-weight: 700; font-size: 1rem;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
      box-shadow: 0 4px 10px -4px rgba(0,0,0,0.2);
    }
    .dk-modal-h-eyebrow {
      font-size: .65rem; font-weight: 700; letter-spacing: .12em;
      color: var(--ink-mute); text-transform: uppercase;
      margin-bottom: .15rem;
    }
    .dk-modal-h-title {
      font-family: var(--font-display); font-weight: 500;
      font-size: 1.2rem; line-height: 1.2;
      color: var(--ink);
      margin: 0;
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .dk-modal-x {
      width: 32px; height: 32px;
      border: none; background: transparent;
      color: var(--ink-soft);
      border-radius: 8px;
      cursor: pointer;
      display: flex; align-items: center; justify-content: center;
      transition: background .15s, color .15s;
      flex-shrink: 0;
    }
    .dk-modal-x:hover { background: rgba(0,0,0,0.06); color: var(--ink); }

    .dk-form {
      padding: 1.4rem 1.5rem 1rem;
      max-height: 70vh;
      overflow-y: auto;
    }
    .dk-field { margin-bottom: 1.1rem; }
    .dk-field-l {
      display: block;
      font-size: .82rem; font-weight: 600;
      color: var(--ink); margin-bottom: .35rem;
      letter-spacing: .005em;
    }
    .dk-field-req { color: #b8463b; font-weight: 700; }
    .dk-field-help {
      font-size: .78rem; line-height: 1.45;
      color: var(--ink-soft);
      margin-top: .35rem;
    }
    .dk-input, .dk-textarea, .dk-select {
      width: 100%; box-sizing: border-box;
      font-family: inherit; font-size: .92rem;
      padding: .55rem .7rem;
      background: var(--bg);
      color: var(--ink);
      border: 1px solid var(--line);
      border-radius: 8px;
      transition: border-color .15s, box-shadow .15s;
    }
    .dk-input:focus, .dk-textarea:focus, .dk-select:focus {
      outline: none;
      border-color: var(--accent-warm, #D67659);
      box-shadow: 0 0 0 3px rgba(214,118,89,0.15);
    }
    .dk-input:disabled { background: var(--bg-tint); color: var(--ink-mute); cursor: not-allowed; }
    .dk-textarea { resize: vertical; min-height: 64px; line-height: 1.5; }
    .dk-select { appearance: none; -webkit-appearance: none;
      background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' fill='none' stroke='%23999' stroke-width='1.5' stroke-linecap='round'/></svg>");
      background-repeat: no-repeat; background-position: right .8rem center;
      padding-right: 2rem;
    }

    .dk-options { display: flex; flex-direction: column; gap: .5rem; }
    .dk-option-row {
      display: flex; align-items: center; gap: .65rem;
      padding: .35rem .55rem;
      background: var(--bg-tint, #f4ecdc);
      border: 1px solid var(--line);
      border-radius: 10px;
      transition: border-color .15s;
    }
    .dk-option-row:has(input[type=radio]:checked) {
      border-color: var(--accent-warm, #D67659);
      background: rgba(214,118,89,0.08);
    }
    .dk-option-radio { display: flex; align-items: center; cursor: pointer; flex-shrink: 0; }
    .dk-option-radio input { display: none; }
    .dk-option-radio span {
      width: 18px; height: 18px;
      border: 2px solid var(--ink-mute);
      border-radius: 50%;
      transition: border-color .15s, background .15s;
      position: relative;
    }
    .dk-option-radio input:checked + span {
      border-color: var(--accent-warm, #D67659);
    }
    .dk-option-radio input:checked + span::after {
      content: '';
      position: absolute; inset: 3px;
      background: var(--accent-warm, #D67659);
      border-radius: 50%;
    }
    .dk-option-text {
      flex: 1; min-width: 0;
      border: none !important; background: transparent !important;
      box-shadow: none !important;
      padding: .35rem 0 !important;
    }

    .dk-ladder { display: flex; flex-direction: column; gap: .45rem; }
    .dk-ladder-row {
      display: grid; grid-template-columns: 28px 80px 1fr;
      align-items: center; gap: .65rem;
      padding: .35rem .55rem;
      background: var(--bg-tint, #f4ecdc);
      border: 1px solid var(--line);
      border-radius: 10px;
    }
    .dk-ladder-rank {
      width: 24px; height: 24px;
      background: var(--ink); color: var(--bg);
      border-radius: 50%; font-size: .72rem; font-weight: 700;
      display: flex; align-items: center; justify-content: center;
    }
    .dk-ladder-meta {
      font-size: .72rem; color: var(--ink-soft); font-weight: 600;
      letter-spacing: .04em; text-transform: uppercase;
    }
    .dk-ladder-text {
      border: none !important; background: transparent !important;
      box-shadow: none !important; padding: .3rem 0 !important;
    }

    .dk-form-msg {
      font-size: .85rem; line-height: 1.45;
      min-height: 1.2em;
      margin-top: .25rem;
    }
    .dk-form-msg.is-err { color: #b8463b; }
    .dk-form-msg.is-ok  { color: #2a8f5a; }

    .dk-modal-foot {
      display: flex; align-items: center; justify-content: space-between;
      gap: .55rem;
      padding: .9rem 1.5rem;
      background: var(--bg-tint, #f4ecdc);
      border-top: 1px solid var(--line);
    }
    .dk-modal-foot-r { display: flex; gap: .55rem; }

    @media (max-width: 600px) {
      .deck-modal-bg { padding: 0; align-items: stretch; }
      .dk-modal { max-width: none; border-radius: 0; min-height: 100vh; }
      .dk-form { max-height: none; }
    }

    /* ── Admin Usage Monitor ──────────────────────────────────── */
    .admin-usage { padding: 1.4rem 1.6rem; }
    .admin-usage-h {
      display: flex; justify-content: space-between; align-items: center;
      margin-bottom: 1.6rem;
    }
    .admin-usage-h h2 { font-family: var(--font-display); font-weight: 500; margin: 0; }
    .admin-usage-controls { display: flex; gap: .6rem; align-items: center; }
    .admin-input {
      padding: .42rem .65rem; font-family: inherit; font-size: .85rem;
      border: 1px solid var(--line); border-radius: 6px; background: #fff;
    }
    .admin-usage-summary {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: .8rem;
      margin-bottom: 1.6rem;
    }
    .admin-usage-stat {
      background: var(--bg-tint); border: 1px solid var(--line);
      border-radius: 8px; padding: .9rem 1rem;
    }
    .admin-usage-stat-num {
      font-family: var(--font-display); font-size: 1.8rem; font-weight: 500;
      color: var(--ink); line-height: 1;
    }
    .admin-usage-stat-label {
      font-size: .78rem; color: var(--ink-soft);
      text-transform: uppercase; letter-spacing: .06em; margin-top: .3rem;
    }
    .admin-section-h {
      font-family: var(--font-display); font-weight: 500; font-size: 1.1rem;
      margin: 1.6rem 0 .8rem; color: var(--ink);
    }
    .admin-usage-table {
      width: 100%; border-collapse: collapse; background: #fff;
      border: 1px solid var(--line); border-radius: 8px; overflow: hidden;
    }
    .admin-usage-table th {
      text-align: left; padding: .7rem .9rem; background: var(--bg-tint);
      font-size: .78rem; font-weight: 600; color: var(--ink-soft);
      text-transform: uppercase; letter-spacing: .05em;
      border-bottom: 1px solid var(--line);
    }
    .admin-usage-table td {
      padding: .7rem .9rem; font-size: .9rem; color: var(--ink);
      border-bottom: 1px solid var(--line);
    }
    .admin-usage-table tr:last-child td { border-bottom: none; }
    .admin-badge {
      display: inline-block; font-size: .72rem; font-weight: 600;
      padding: .15rem .5rem; border-radius: 4px;
      background: rgba(92, 138, 106, .15); color: #5C8A6A;
    }
    .admin-badge.is-warn { background: rgba(214, 118, 89, .15); color: #c5694a; }
    .admin-badge.is-muted { background: rgba(150, 138, 117, .15); color: var(--ink-soft); }
    .admin-btn-sm {
      font-family: inherit; font-size: .78rem; padding: .25rem .55rem;
      background: transparent; border: 1px solid var(--line); border-radius: 5px;
      cursor: pointer; color: var(--ink-soft);
    }
    .admin-btn-sm:hover { color: var(--ink); border-color: var(--ink-soft); }


    /* ── Admin Users (platform-wide tree) ──────────────────────── */
    .admin-users { padding: 1.4rem 1.6rem; }
    .admin-users-h {
      display: flex; justify-content: space-between; align-items: center;
      margin-bottom: 1.2rem;
    }
    .admin-users-h h2 { font-family: var(--font-display); font-weight: 500; margin: 0; }
    .admin-users-summary {
      display: grid; grid-template-columns: repeat(8, 1fr); gap: .6rem;
      margin-bottom: 1.4rem;
    }
    .admin-users-stat {
      background: var(--bg-tint); border: 1px solid var(--line);
      border-radius: 8px; padding: .7rem .8rem;
    }
    .admin-users-stat-num {
      font-family: var(--font-display); font-size: 1.4rem; font-weight: 500;
      color: var(--ink); line-height: 1;
    }
    .admin-users-stat-label {
      font-size: .68rem; color: var(--ink-soft);
      text-transform: uppercase; letter-spacing: .05em; margin-top: .3rem;
    }
    @media (max-width: 1100px) {
      .admin-users-summary { grid-template-columns: repeat(4, 1fr); }
    }
    .admin-users-grid {
      display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, 1fr);
      gap: 1rem; align-items: start;
    }
    @media (max-width: 900px) {
      .admin-users-grid { grid-template-columns: 1fr; }
    }
    .admin-users-tree {
      background: #fff; border: 1px solid var(--line); border-radius: 8px;
      padding: .8rem; max-height: 75vh; overflow-y: auto;
    }
    .admin-users-detail {
      background: #fff; border: 1px solid var(--line); border-radius: 8px;
      padding: 1rem 1.1rem; position: sticky; top: 1rem;
      max-height: 75vh; overflow-y: auto;
    }
    .admin-tree-tenant { margin-bottom: 1.2rem; }
    .admin-tree-tenant-h {
      display: flex; justify-content: space-between; align-items: center;
      padding: .55rem .65rem; background: var(--bg-tint);
      border-radius: 6px; margin-bottom: .4rem;
    }
    .admin-tree-tenant-name { font-weight: 600; color: var(--ink); }
    .admin-tree-tag {
      font-size: .68rem; padding: .15rem .5rem; border-radius: 4px;
      background: rgba(150, 138, 117, .15); color: var(--ink-soft);
      text-transform: uppercase; letter-spacing: .05em;
    }
    .admin-tree-tag.is-self_study_marketplace { background: rgba(232, 166, 82, .15); color: #c08a3e; }
    .admin-tree-tag.is-school { background: rgba(95, 145, 200, .15); color: #5F91C8; }
    .admin-tree-course { margin-left: .7rem; padding: .3rem 0 .5rem; border-left: 2px solid var(--line); padding-left: .8rem; }
    .admin-tree-course-h { padding: .3rem 0; }
    .admin-tree-course-name { font-weight: 500; color: var(--ink); }
    .admin-tree-class { margin-left: .5rem; margin-top: .5rem; padding-left: .7rem; border-left: 2px solid var(--line); }
    .admin-tree-class-h {
      display: flex; justify-content: space-between; align-items: center;
      padding: .25rem 0;
    }
    .admin-tree-class-name { color: var(--ink); font-size: .92rem; }
    .admin-tree-section, .admin-tree-subsection { margin: .3rem 0 .5rem; }
    .admin-tree-section-h, .admin-tree-subsection-h {
      font-size: .72rem; color: var(--ink-soft); text-transform: uppercase;
      letter-spacing: .05em; padding: .2rem .4rem; font-weight: 600;
    }
    .admin-tree-empty {
      padding: .35rem .5rem; color: var(--ink-soft);
      font-size: .82rem; font-style: italic;
    }
    .admin-tree-row {
      display: flex; justify-content: space-between; align-items: center;
      padding: .4rem .55rem; border-radius: 5px;
      cursor: pointer; transition: background .12s;
      gap: .6rem;
    }
    .admin-tree-row:hover { background: var(--bg-tint); }
    .admin-tree-row.is-selected { background: rgba(184, 146, 58, .12); }
    .admin-tree-row.is-disabled .admin-tree-row-email { text-decoration: line-through; color: var(--ink-soft); }
    .admin-tree-row-main { display: flex; flex-direction: column; min-width: 0; flex: 1; }
    .admin-tree-row-email { font-size: .88rem; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .admin-tree-row-name { font-size: .76rem; color: var(--ink-soft); }
    .admin-tree-row-tags { display: flex; gap: .3rem; flex-shrink: 0; }
    .admin-row-role {
      font-size: .65rem; padding: .12rem .4rem; border-radius: 3px;
      text-transform: uppercase; letter-spacing: .04em; font-weight: 600;
    }
    .admin-row-role.is-headmaster { background: rgba(184, 146, 58, .15); color: #B8923A; }
    .admin-row-role.is-teacher    { background: rgba(95, 145, 200, .15); color: #5F91C8; }
    .admin-row-role.is-student    { background: rgba(92, 138, 106, .15); color: #5C8A6A; }
    .admin-row-role.is-subscriber { background: rgba(214, 118, 89, .12); color: #c5694a; }
    .admin-row-role.is-editor     { background: rgba(150, 138, 117, .15); color: var(--ink-soft); }
    .admin-row-tag {
      font-size: .65rem; padding: .12rem .4rem; border-radius: 3px;
      background: rgba(150, 138, 117, .15); color: var(--ink-soft);
    }
    .admin-row-tag.is-warn { background: rgba(214, 118, 89, .15); color: #c5694a; }

    /* Detail panel */
    .admin-detail-h { padding-bottom: .8rem; border-bottom: 1px solid var(--line); margin-bottom: .8rem; }
    .admin-detail-name { font-family: var(--font-display); font-size: 1.2rem; font-weight: 500; color: var(--ink); }
    .admin-detail-email { font-size: .85rem; color: var(--ink-soft); margin-top: .15rem; }
    .admin-detail-section { margin-bottom: 1rem; }
    .admin-detail-section-h {
      font-size: .72rem; color: var(--ink-soft); text-transform: uppercase;
      letter-spacing: .05em; font-weight: 600; margin-bottom: .35rem;
    }
    .admin-detail-card {
      background: var(--bg-tint); border: 1px solid var(--line);
      border-radius: 6px; padding: .55rem .7rem; margin-bottom: .4rem;
      font-size: .86rem; color: var(--ink);
    }
    .admin-detail-sub { font-size: .76rem; color: var(--ink-soft); margin-top: .2rem; }
    .admin-detail-kv {
      display: flex; justify-content: space-between; padding: .25rem 0;
      font-size: .85rem;
    }
    .admin-detail-k { color: var(--ink-soft); }
    .admin-detail-v { color: var(--ink); font-family: monospace; font-size: .8rem; word-break: break-all; }
    .admin-detail-actions {
      display: flex; gap: .4rem; padding-top: .8rem;
      border-top: 1px solid var(--line); margin-top: .8rem;
    }
    .admin-detail-actions a {
      display: inline-block; text-decoration: none;
    }

    /* Collapsible tree headers */
    .admin-tree-chev {
      display: inline-block; font-size: .7rem; color: var(--ink-soft);
      transition: transform .15s; margin-right: .35rem; user-select: none;
    }
    [data-collapse-toggle] {
      cursor: pointer; user-select: none;
    }
    [data-collapse-toggle]:hover { background: rgba(0,0,0,0.025); border-radius: 4px; }
    .admin-tree-tenant.is-collapsed     > :not(.admin-tree-tenant-h),
    .admin-tree-course.is-collapsed     > :not(.admin-tree-course-h),
    .admin-tree-class.is-collapsed      > :not(.admin-tree-class-h),
    .admin-tree-section.is-collapsed    > :not(.admin-tree-section-h),
    .admin-tree-subsection.is-collapsed > :not(.admin-tree-subsection-h) {
      display: none;
    }
    .admin-tree-tenant.is-collapsed     > .admin-tree-tenant-h     .admin-tree-chev,
    .admin-tree-course.is-collapsed     > .admin-tree-course-h     .admin-tree-chev,
    .admin-tree-class.is-collapsed      > .admin-tree-class-h      .admin-tree-chev,
    .admin-tree-section.is-collapsed    > .admin-tree-section-h    .admin-tree-chev,
    .admin-tree-subsection.is-collapsed > .admin-tree-subsection-h .admin-tree-chev {
      transform: rotate(-90deg);
    }

    /* Users page — search bar + filtered hide */
    .admin-users-controls {
      display: flex; gap: .55rem; align-items: center;
    }
    .admin-users-controls .admin-input {
      min-width: 280px;
    }
    .admin-tree-row.is-hidden,
    .admin-tree-tenant.is-hidden,
    .admin-tree-course.is-hidden,
    .admin-tree-class.is-hidden,
    .admin-tree-section.is-hidden,
    .admin-tree-subsection.is-hidden {
      display: none !important;
    }