/* ── Nav ── */
    .nav {
      position: sticky;
      top: 0;
      z-index: 100;
      height: 60px;
      background: rgba(244,242,238,.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      padding: 0 20px;
      gap: 12px;
    }
    .nav-back {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-2);
      text-decoration: none;
      border: none;
      background: none;
      cursor: pointer;
      font-family: 'Onest', sans-serif;
      padding: 6px 10px;
      border-radius: var(--radius-pill);
      transition: background .15s;
      order: 1;
    }
    .nav-back:hover { background: var(--border-light); }
    .nav-back svg { width: 16px; height: 16px; }

    .nav-title {
      font-family: 'Geologica', sans-serif;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: -0.02em;
      color: var(--text);
      flex: 1;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      order: 2;
    }
    .nav-logo {
      font-family: 'Geologica', sans-serif;
      font-size: 14px;
      font-weight: 700;
      color: var(--text);
      text-decoration: none;
      letter-spacing: -0.03em;
      order: 3;
    }
    .nav-logo span { color: var(--accent); }

    .nav-links {
      display: none;
      align-items: center;
      gap: 2px;
      order: 2;
    }
    .nav-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-2);
      text-decoration: none;
      padding: 6px 12px;
      border-radius: var(--radius-pill);
      transition: background .15s, color .15s;
      white-space: nowrap;
      cursor: pointer;
      border: none;
      background: none;
      font-family: 'Onest', sans-serif;
    }
    .nav-link:hover { background: var(--accent-light); color: var(--accent); }
    .nav-link.active { background: var(--accent-light); color: var(--accent); font-weight: 600; }
    .nav-link.disabled { color: var(--text-3); cursor: default; pointer-events: none; }

    .nav-spacer { display: none; flex: 1; order: 3; }

    .nav-avatar {
      display: none;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--accent-light);
      border: 2px solid var(--accent-muted);
      align-items: center;
      justify-content: center;
      font-size: 11px;
      font-weight: 700;
      color: var(--accent);
      cursor: pointer;
      flex-shrink: 0;
      letter-spacing: -.02em;
      order: 5;
    }

    .nav-avatar a { text-decoration: none; }

    .btn-sm { font-size: 13px; padding: 6px 14px; }
    .nav-btn-create { display: none; order: 4; }

    @media (min-width: 768px) {
      .nav-back  { display: none; }
      .nav-title { display: none; }
      .nav-logo  { order: 1; margin-right: 8px; }
      .nav-links { display: flex; }
      .nav-spacer { display: block; }
      .nav-btn-create { display: inline-flex; }
      .nav-avatar { display: flex; }
    }