:root {
      /* Modern dark theme with refined violet accent */
      --bg:              #0a0a0c;
      --bg-gradient:     linear-gradient(135deg, #0a0a0c 0%, #0d0d10 100%);
      --surface:         #131316;
      --surface-hover:   #1a1a1e;
      --surface-2:       #1a1a1e;
      --surface-elevated: #1e1e23;
      --border:          rgba(255, 255, 255, 0.1);
      --border-subtle:   rgba(255, 255, 255, 0.06);
      --border-highlight: rgba(124, 58, 237, 0.3);
      --text:            #f5f5f7;
      --text-secondary:  #a1a1aa;
      --muted:           #6b7280;
      --accent:          #8b5cf6;
      --accent-hover:    #a78bfa;
      --accent-active:   #7c3aed;
      --accent-muted:    rgba(139, 92, 246, 0.2);
      --accent-soft:     rgba(139, 92, 246, 0.1);
      --accent-faint:    rgba(139, 92, 246, 0.05);
      --accent-glow:     rgba(139, 92, 246, 0.15);
      --accent-ink:      #e9d5ff;
      --green:           #34d399;
      --blue:            #60a5fa;
      --orange:          #fb923c;
      --red:             #f87171;
      --code-bg:         #0c0c0e;
      --radius:          8px;
      --radius-sm:       6px;
      --radius-lg:       12px;
      --radius-xl:       16px;
      --shell-pad:       24px;
      --layout-pad:      24px;
      --content-max:     1200px;
      --content-col-max: min(58rem, 100%);
      --sidebar-w:       240px;
      --sidebar-pad-x:   14px;
      --form-col-max:    36rem;
      --input-fill:     #16161a;
      --scrollbar-track: #0a0a0c;
      --scrollbar-thumb: #404045;
      --scrollbar-thumb-hover: #525258;
      --shadow-sm:       0 1px 2px rgba(0, 0, 0, 0.3);
      --shadow-md:       0 4px 6px rgba(0, 0, 0, 0.3);
      --shadow-lg:       0 10px 15px rgba(0, 0, 0, 0.35);
      --shadow-glow:     0 0 20px rgba(139, 92, 246, 0.15);
      --transition-fast: 0.12s cubic-bezier(0.4, 0, 0.2, 1);
      --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
      --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    html {
      scroll-behavior: smooth;
      height: 100%;
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
    }

    /* Scrollbars — thin track, rounded thumb (Firefox + WebKit) */
    * {
      scrollbar-width: thin;
      scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
    }
    /* Subtler scrollbar for main content */
    .main-area::-webkit-scrollbar {
      width: 6px;
    }
    .main-area::-webkit-scrollbar-thumb {
      background-color: var(--scrollbar-thumb);
      border-radius: 100px;
      border: 1px solid transparent;
      background-clip: padding-box;
    }
    .main-area::-webkit-scrollbar-thumb:hover {
      background-color: var(--scrollbar-thumb-hover);
    }
    .main-area::-webkit-scrollbar-track {
      background: var(--scrollbar-track);
    }
    *::-webkit-scrollbar {
      width: 8px;
      height: 8px;
    }
    *::-webkit-scrollbar-track {
      background: var(--scrollbar-track);
      border-radius: 100px;
    }
    *::-webkit-scrollbar-thumb {
      background: var(--scrollbar-thumb);
      border-radius: 100px;
      border: 2px solid transparent;
      background-clip: padding-box;
    }
    *::-webkit-scrollbar-thumb:hover {
      background-color: var(--scrollbar-thumb-hover);
      border: 2px solid transparent;
      background-clip: padding-box;
    }
    *::-webkit-scrollbar-corner {
      background: var(--scrollbar-track);
    }

    body {
      margin: 0;
      background: var(--bg-gradient);
      color: var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
      font-size: 14px;
      line-height: 1.6;
      min-height: 100vh;
      height: 100vh;
      display: flex;
      flex-direction: column;
      overflow: hidden;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    body.nav-drawer-open {
      overflow: hidden;
    }

    a { color: var(--accent); text-decoration: none; }
    a:hover { color: var(--accent-hover); text-decoration: underline; }

    /* ── Header with glass effect ── */
    header {
      flex-shrink: 0;
      z-index: 150;
      background: rgba(10, 10, 12, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      padding: 0 var(--layout-pad);
      position: sticky;
      top: 0;
    }
    .header-inner {
      width: 100%;
      max-width: min(1360px, 100%);
      margin-left: auto;
      margin-right: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 52px;
      gap: 12px;
    }
    .header-brand-wrap {
      display: flex;
      align-items: center;
      gap: 4px;
      min-width: 0;
    }
    .nav-menu-btn {
      display: none;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      margin-right: 4px;
      margin-left: -8px;
      padding: 0;
      border: none;
      border-radius: var(--radius);
      background: transparent;
      color: var(--muted);
      cursor: pointer;
      transition: color 0.15s, background 0.15s;
    }
    .nav-menu-btn:hover {
      color: var(--text);
      background: var(--surface-hover);
    }
    .nav-menu-btn:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    .nav-menu-btn svg {
      width: 22px;
      height: 22px;
      display: block;
    }
    .logo-btn {
      display: flex;
      align-items: center;
      gap: 10px;
      font: inherit;
      font-weight: 700;
      font-size: 15px;
      color: #ffffff;
      letter-spacing: -0.02em;
      background: none;
      border: none;
      padding: 4px 8px 4px 4px;
      margin: 0;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }
    .logo-btn:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    .header-meta {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .status-dot {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      color: var(--muted);
      padding: 4px 10px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
    }
    .version-badge {
      font-size: 11px;
      font-weight: 500;
      color: var(--muted);
      background: transparent;
      border:1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 3px 8px;
      letter-spacing: 0.02em;
    }
    .status-dot {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: var(--muted);
    }
    .account-chip {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 3px 10px;
      font-size: 11px;
      font-weight: 600;
      color: var(--muted);
      background: var(--surface);
      cursor: pointer;
      transition: border-color 0.15s, color 0.15s;
    }
    .account-chip:hover {
      color: var(--text);
      border-color: var(--text-secondary);
    }
    .account-chip:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    .account-chip.online {
      color: var(--green);
      border-color: rgba(52, 211, 153, 0.35);
    }
    .account-chip.offline {
      color: var(--muted);
    }
    .dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--muted);
      transition: background 0.3s;
    }
    .dot.online { background: var(--green); }
    .dot.offline { background: var(--red); }

    .nav-backdrop {
      display: none;
      pointer-events: none;
    }
    @media (min-width: 901px) {
      .nav-menu-btn {
        display: none !important;
      }
    }

    /* ── App shell: fixed chrome, scroll only main + sidebar ── */
    .app-body {
      flex: 1;
      display: flex;
      align-items: stretch;
      width: 100%;
      min-height: 0;
      height: calc(100vh - 52px);
      overflow: hidden;
      max-width: min(1360px, 100%);
      margin: 0 auto;
      padding: 0;
      box-sizing: border-box;
      gap: 0;
    }
    .app-sidebar {
      flex-shrink: 0;
      flex-grow: 0;
      width: var(--sidebar-w);
      min-width: var(--sidebar-w);
      max-width: var(--sidebar-w);
      box-sizing: border-box;
      align-self: stretch;
      overflow-x: hidden;
      overflow-y: auto;
      padding: 16px var(--sidebar-pad-x) 32px;
      border-right: 1px solid var(--border);
      background: var(--bg);
      scroll-padding-top: 16px;
      scroll-padding-bottom: 24px;
    }
    .sidebar-nav {
      display: block;
    }
    /* Flat nav — no inset card; same canvas as page */
    .sidebar-rail {
      border: none;
      border-radius: 0;
      background: transparent;
      padding: 0;
      width: 100%;
      box-sizing: border-box;
    }
    .sidebar-divider {
      height: 0;
      margin: 12px 0 10px;
      border: 0;
      border-top: 1px solid var(--border);
    }
    .sidebar-kicker {
      font-size: 11px;
      font-weight: 500;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 4px;
      padding: 0;
    }
    .sidebar-rail > .sidebar-kicker:not(:first-child) {
      margin-top: 2px;
    }
    .sidebar-section-hint {
      font-size: 11px;
      font-weight: 400;
      color: var(--muted);
      line-height: 1.45;
      padding: 0 0 8px;
      margin: 0;
    }
    .sidebar-link {
      display: block;
      width: 100%;
      box-sizing: border-box;
      text-align: left;
      background: transparent;
      border: none;
      border-left: 2px solid transparent;
      border-radius: var(--radius-sm);
      color: var(--text-secondary);
      font-size: 13px;
      font-weight: 500;
      padding: 8px 10px 8px 8px;
      margin: 0 0 1px 0;
      cursor: pointer;
      transition: color 0.12s ease, background 0.12s ease, border-color 0.12s ease;
    }
    .sidebar-link:hover {
      color: var(--text);
      background: var(--surface-hover);
    }
    .sidebar-link:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 0;
    }
    .sidebar-link.active {
      color: var(--text);
      background: rgba(255, 255, 255, 0.04);
      font-weight: 600;
      border-left-color: rgba(124, 58, 237, 0.85);
    }
    /* display:flex on flex children overrides [hidden] — force hide for sidebar toggles */
    #sidebarKeysSignedIn[hidden],
    .sidebar-keys-signed[hidden] {
      display: none !important;
    }
    #sidebarKeysSignedIn:not([hidden]) {
      display: flex;
      flex-direction: column;
      gap: 2px;
      padding-top: 2px;
    }
    #sidebarKeysGate[hidden] {
      display: none !important;
    }
    .sidebar-hint-tools {
      margin-top: -2px;
    }
    .sidebar-keys-gate {
      display: flex;
      flex-direction: column;
      gap: 0;
    }
    .sidebar-keys-signed .sidebar-kicker {
      color: var(--text-secondary);
    }
    .main-area {
      flex: 1;
      min-width: 0;
      min-height: 0;
      overflow-x: hidden;
      overflow-y: auto;
      scrollbar-gutter: stable;
      overscroll-behavior: contain;
      padding: 24px var(--layout-pad) 40px var(--layout-pad);
      scroll-padding-top: 16px;
      scroll-padding-bottom: 24px;
      box-sizing: border-box;
    }
    .main-area > .tab-content {
      max-width: var(--content-col-max);
      width: 100%;
      margin: 0 auto;
      box-sizing: border-box;
    }
    .dashboard-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 14px;
      margin-bottom: 8px;
      text-align: left;
    }
    .dashboard-card {
      display: block;
      width: 100%;
      text-align: left;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 16px 18px;
      cursor: pointer;
      transition: border-color 0.15s ease, background 0.15s ease;
      font: inherit;
      color: inherit;
      box-shadow: none;
    }
    .dashboard-card:hover {
      border-color: var(--border);
      background: var(--surface-hover);
    }
    .dashboard-card:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    .dashboard-card-title {
      display: block;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 6px;
    }
    .dashboard-card-desc {
      display: block;
      font-size: 12px;
      color: var(--muted);
      line-height: 1.5;
    }
    .course-billing-details {
      margin-top: 14px;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 0 14px 12px;
      background: rgba(0,0,0,0.15);
    }
    .course-billing-details summary {
      cursor: pointer;
      font-size: 12px;
      font-weight: 600;
      color: var(--muted);
      padding: 12px 0;
      list-style: none;
    }
    .course-billing-details summary::-webkit-details-marker { display: none; }
    .tab-content { display: none; }
    .tab-content.active { display: block; }
    .main-area > .tab-content > .section:first-child,
    .main-area > .tab-content > .portal-shell > .section:first-child {
      margin-top: 0;
    }

    /* ── Section headings ── */
    h2 {
      font-size: 22px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 8px;
      letter-spacing: -0.03em;
    }
    h3 {
      font-size: 12px;
      font-weight: 600;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: 12px;
    }
    .section { margin-bottom: 44px; }
    .section-desc {
      color: var(--muted);
      margin-bottom: 20px;
      max-width: 600px;
    }

    /* Docs-style: left-aligned narrative (easier to scan than centered walls of text) */
    main .section {
      text-align: left;
    }
    main h2 {
      text-align: left;
    }
    main h3 {
      text-align: left;
      text-transform: none;
      letter-spacing: -0.01em;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
    }
    main .section-desc {
      max-width: none;
      margin-left: 0;
      margin-right: 0;
      text-align: left;
    }
    main .endpoint,
    main .endpoint-header,
    main .endpoint-body,
    main .code-block,
    main .auth-example,
    main .card,
    main .key-form,
    main .stats-card,
    main .usage-error,
    main .usage-info,
    main .keys-panel,
    main .keys-loading,
    main .axios-note,
    main .license-contact,
    main .portal-card {
      text-align: left;
    }
    main .sandbox-out,
    main .sandbox-key-row,
    main .sandbox-context-shell,
    main .sandbox-case-tabs {
      text-align: left;
    }
    .sandbox-json-copy {
      position: absolute;
      top: 10px;
      right: 10px;
      z-index: 2;
      width: 34px;
      height: 34px;
      padding: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 6px;
      border: 1px solid var(--border);
      background: rgba(19, 19, 31, 0.92);
      color: var(--muted);
      cursor: pointer;
      opacity: 0.55;
      transition:
        opacity 0.2s,
        color 0.2s,
        background 0.2s,
        border-color 0.2s,
        transform 0.12s ease,
        box-shadow 0.2s;
    }
    .sandbox-json-copy:hover {
      color: var(--text);
      background: var(--surface-2);
      border-color: var(--muted);
      opacity: 1;
    }
    .sandbox-json-copy.copied:hover {
      color: var(--green);
      background: rgba(52, 211, 153, 0.16);
      border-color: rgba(52, 211, 153, 0.55);
    }
    .sandbox-json-copy.copy-fail:hover {
      color: var(--red);
      background: rgba(248, 113, 113, 0.14);
      border-color: rgba(248, 113, 113, 0.55);
    }
    .sandbox-json-copy:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
      opacity: 1;
    }
    .sandbox-json-copy:active:not(.copied):not(.copy-fail) {
      transform: scale(0.9);
    }
    .sandbox-json-copy.copied {
      opacity: 1;
      color: var(--green);
      border-color: rgba(52, 211, 153, 0.45);
      background: rgba(52, 211, 153, 0.12);
      box-shadow: 0 0 0 1px rgba(52, 211, 153, 0.2), 0 4px 20px rgba(52, 211, 153, 0.12);
      animation: sandbox-copy-pop 0.45s cubic-bezier(0.34, 1.4, 0.64, 1);
    }
    .sandbox-json-copy.copy-fail {
      opacity: 1;
      color: var(--red);
      border-color: rgba(248, 113, 113, 0.45);
      background: rgba(248, 113, 113, 0.1);
      animation: sandbox-copy-shake 0.4s ease;
    }
    @keyframes sandbox-copy-pop {
      0% { transform: scale(1); }
      40% { transform: scale(1.12); }
      100% { transform: scale(1); }
    }
    @keyframes sandbox-copy-shake {
      0%, 100% { transform: translateX(0); }
      20% { transform: translateX(-3px); }
      40% { transform: translateX(3px); }
      60% { transform: translateX(-2px); }
      80% { transform: translateX(2px); }
    }
    .sandbox-json-copy svg {
      width: 16px;
      height: 16px;
      display: block;
      flex-shrink: 0;
    }
    .sandbox-json-copy .sandbox-copy-check {
      display: none;
    }
    .sandbox-json-copy.copied .sandbox-copy-clip {
      display: none;
    }
    .sandbox-json-copy.copied .sandbox-copy-check {
      display: block;
    }
    .sandbox-json-copy.copy-fail .sandbox-copy-clip,
    .sandbox-json-copy.copy-fail .sandbox-copy-check {
      display: none;
    }
    .sandbox-json-copy.copy-fail .sandbox-copy-warn {
      display: block;
    }
    .sandbox-json-copy .sandbox-copy-warn {
      display: none;
      width: 16px;
      height: 16px;
    }
    .sandbox-context-pre {
      margin: 0;
      padding: 44px 16px 16px 16px;
      max-height: 420px;
      overflow: auto;
      font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
      font-size: 11px;
      line-height: 1.55;
      color: #c9d1d9;
      white-space: pre;
      word-break: normal;
    }
    .sandbox-context-hint {
      line-height: 1.55;
    }
    .sandbox-context-hint.section-desc {
      margin-bottom: 10px;
    }
    .sandbox-player-field {
      margin-bottom: 18px;
    }
    .sandbox-out {
      background: var(--code-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 14px 16px;
      font-size: 11px;
      font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
      max-height: 480px;
      overflow: auto;
      white-space: pre-wrap;
      word-break: break-word;
      color: var(--muted);
      margin-top: 0;
    }
    .section > h3 + .sandbox-out {
      margin-top: 4px;
    }
    /* Sample draft: avoid stretched flex gap between key field and POST button */
    #tab-sandbox .sandbox-key-row {
      display: flex;
      flex-direction: column;
      align-items: stretch;
      gap: 16px;
      margin-bottom: 20px;
    }
    #tab-sandbox .sandbox-key-row .key-input-wrap {
      width: 100%;
    }
    .sandbox-key-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
    }
    
    /* Improved sandbox form fields */
    .sandbox-form-grid {
      display: grid;
      gap: 16px;
      margin-bottom: 20px;
    }
    .sandbox-field-label {
      display: block;
      font-size: 12px;
      font-weight: 600;
      color: var(--text-secondary);
      margin-bottom: 6px;
      text-transform: none;
      letter-spacing: 0;
    }
    .sandbox-field-hint {
      font-size: 12px;
      color: var(--muted);
      margin-top: 4px;
      line-height: 1.5;
    }
    
    /* Improved error styling for playground */
    #tab-sandbox .usage-error {
      display: none;
      background: rgba(248, 113, 113, 0.08);
      border: 1px solid rgba(248, 113, 113, 0.3);
      border-left: 3px solid var(--red);
      color: #fca5a5;
      border-radius: var(--radius);
      padding: 12px 14px;
      font-size: 13px;
      margin-top: 16px;
      line-height: 1.55;
    }
    #tab-sandbox .usage-error[style*="display: block"] {
      display: flex !important;
      align-items: flex-start;
      gap: 10px;
    }
    #tab-sandbox .usage-error::before {
      content: "";
      width: 18px;
      height: 18px;
      flex-shrink: 0;
      background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23f87171' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M12 8v4m0 4h.01'/%3E%3C/svg%3E") no-repeat center;
      background-size: contain;
      margin-top: 1px;
    }
    
    /* Primary CTA button styling */
    .sandbox-key-actions .load-btn[onclick*="sandboxRunPlayerValuation"] {
      background: var(--accent);
      border-color: var(--accent);
      color: #ffffff;
      font-weight: 600;
      padding: 10px 20px;
    }
    .sandbox-key-actions .load-btn[onclick*="sandboxRunPlayerValuation"]:hover {
      background: var(--accent-hover);
      border-color: var(--accent-hover);
      color: #ffffff;
    }
    .sandbox-key-actions .load-btn[onclick*="sandboxRunPlayerValuation"]:disabled {
      background: var(--muted);
      border-color: var(--muted);
      opacity: 0.4;
    }
    
    /* Section improvements */
    #tab-sandbox h2 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 6px;
      letter-spacing: -0.03em;
    }
    #tab-sandbox .section-desc {
      font-size: 14px;
      line-height: 1.6;
      color: var(--text-secondary);
      margin-bottom: 28px;
    }
    #tab-sandbox h3 {
      font-size: 13px;
      font-weight: 700;
      text-transform: none;
      letter-spacing: 0;
      margin-bottom: 14px;
      color: var(--text);
      padding-bottom: 8px;
      border-bottom: 1px solid var(--border-subtle);
    }
    
    /* Improved fixture tabs */
    #tab-sandbox .sandbox-case-tabs,
    #tab-sandbox .sandbox-key-row {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 14px;
    }
    
    /* Make fixture & run sections span full content width */
    #tab-sandbox .section {
      max-width: none;
      width: 100%;
    }
    
    /* Make playground context cards span full content column width */
    #tab-sandbox .sandbox-context-shell.portal-card {
      max-width: 100%;
    }
    .sandbox-case-tab {
      background: var(--surface);
      border: 1px solid var(--border);
      color: var(--text-secondary);
      font-size: 12px;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.15s ease;
    }
    .sandbox-case-tab:hover {
      color: var(--text);
      border-color: var(--text-secondary);
      background: var(--surface-hover);
    }
    .sandbox-case-tab.active {
      color: var(--text);
      border-color: var(--accent);
      background: var(--accent-soft);
      font-weight: 600;
      box-shadow: 0 0 0 1px rgba(124, 58, 237, 0.1);
    }
    
    /* Improved context panel */
    .sandbox-context-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 12px;
      background: var(--surface-2);
      border-bottom: 1px solid var(--border-subtle);
      border-radius: var(--radius) var(--radius) 0 0;
      margin: 0;
      font-size: 11px;
      font-weight: 600;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }
    .sandbox-context-shell {
      position: relative;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--code-bg);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .sandbox-context-shell .sandbox-context-pre {
      margin: 0;
      padding: 32px 12px 12px 12px;
      max-height: 360px;
      overflow: auto;
      font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
      font-size: 11px;
      line-height: 1.6;
      color: #c9d1d9;
      white-space: pre;
      word-break: normal;
      border-radius: 0 0 var(--radius) var(--radius);
      min-height: 80px;
    }
    .sandbox-context-shell .sandbox-context-pre:empty::before {
      content: "Loading fixture…";
      color: var(--muted);
      opacity: 0.5;
      font-style: italic;
      display: block;
    }
    .sandbox-context-shell:hover .sandbox-json-copy {
      opacity: 1;
    }
    
    /* Improved response section */
    #tab-sandbox .sandbox-out {
      background: var(--code-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 14px 16px;
      font-size: 11px;
      font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
      max-height: 520px;
      overflow: auto;
      white-space: pre-wrap;
      word-break: break-word;
      color: var(--muted);
      margin-top: 0;
      min-height: 120px;
      display: flex;
      align-items: flex-start;
    }
    #tab-sandbox .sandbox-out:empty::before {
      content: "Response will appear here";
      color: var(--muted);
      opacity: 0.5;
      font-style: italic;
    }
    
    /* Section spacing */
    #tab-sandbox .section {
      margin-bottom: 36px;
    }
    #tab-sandbox .section:last-child {
      margin-bottom: 0;
    }
    
    /* Remove playground-specific card width overrides to match Usage */
    /* Portal card improvements for playground - width handled by base .portal-card class */
    
    /* Key input improvements */
    .sandbox-key-row .key-input {
      font-size: 13px;
      padding: 11px 100px 11px 14px;
    }
    .sandbox-key-row .key-input-wrap {
      position: relative;
    }
    .sandbox-key-row button[onclick*="sandboxUseAccountKey"] {
      font-weight: 600;
      padding: 7px 14px;
      font-size: 12px;
      border-radius: 6px;
    }
    /* ── Cards ── */
    .card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .card + .card { margin-top: 12px; }

    /* ── Endpoint cards ── */
    .endpoint {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03);
    }
    .endpoint-header {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px 18px;
      cursor: pointer;
      user-select: none;
      transition: background 0.15s;
    }
    .endpoint-header:hover { background: var(--surface-2); }
    .method-badge {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.06em;
      padding: 3px 9px;
      border-radius: 4px;
      flex-shrink: 0;
    }
    .method-post { background: rgba(96,165,250,0.15); color: var(--blue); }
    .method-get  { background: rgba(52,211,153,0.15); color: var(--green); }
    .endpoint-path {
      font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
      font-size: 13px;
      color: var(--text);
      flex: 1;
    }
    .endpoint-desc {
      font-size: 12px;
      color: var(--muted);
      flex: 2;
      text-align: right;
    }
    .chevron {
      color: var(--muted);
      font-size: 12px;
      transition: transform 0.2s;
    }
    .endpoint.open .chevron { transform: rotate(90deg); }
    .endpoint-body {
      display: none;
      padding: 0 18px 18px;
      border-top: 1px solid var(--border);
    }
    .endpoint.open .endpoint-body { display: block; }
    .endpoint-body .when {
      font-size: 12px;
      color: var(--muted);
      padding: 12px 0 16px;
    }
    .block-label {
      font-size: 11px;
      font-weight: 600;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 6px;
      margin-top: 16px;
    }

    /* ── Code blocks ── */
    .code-block {
      position: relative;
      background: var(--code-bg);
      border: 1px solid var(--border);
      border-radius: 6px;
      overflow: hidden;
    }
    .code-block pre {
      overflow-x: auto;
      padding: 14px 16px;
      font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
      font-size: 12px;
      line-height: 1.7;
      color: #c9d1d9;
    }
    .copy-btn {
      position: absolute;
      top: 8px;
      right: 8px;
      background: var(--surface);
      border: 1px solid var(--border);
      color: var(--muted);
      font-size: 11px;
      font-weight: 500;
      padding: 3px 10px;
      border-radius: 4px;
      cursor: pointer;
      transition: color 0.15s, background 0.15s;
    }
    .copy-btn:hover { background: var(--surface-2); color: var(--text); }
    .copy-btn.copied { color: var(--green); border-color: var(--green); }

    /* Syntax highlight tokens */
    .t-key    { color: #79c0ff; }
    .t-str    { color: #a5d6ff; }
    .t-num    { color: #f2cc60; }
    .t-bool   { color: #ff7b72; }
    .t-null   { color: var(--muted); }
    .t-cmt    { color: #5a6070; font-style: italic; }
    .t-method { color: var(--green); font-weight: 600; }
    .t-path   { color: var(--text); }
    .t-header { color: var(--orange); }
    .t-val    { color: #a5d6ff; }

    /* ── Auth section ── */
    .auth-example {
      position: relative;
      background: var(--code-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
    }
    .auth-example pre {
      padding: 14px 16px;
      font-family: "SF Mono","Fira Code","Fira Mono",monospace;
      font-size: 12px;
      line-height: 1.8;
      overflow-x: auto;
    }

    /* ── Rate limit / tier table ── */
    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 13px;
    }
    th {
      text-align: left;
      color: var(--muted);
      font-weight: 600;
      font-size: 11px;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      padding: 10px 14px;
      border-bottom: 1px solid var(--border);
    }
    td {
      padding: 10px 14px;
      border-bottom: 1px solid var(--border);
      color: var(--text);
    }
    tr:last-child td { border-bottom: none; }
    .tier-badge {
      font-size: 11px;
      font-weight: 600;
      padding: 2px 8px;
      border-radius: 4px;
      text-transform: capitalize;
    }
    .tier-free     { background: rgba(120,120,160,0.2); color: var(--muted); }
    .tier-standard { background: rgba(96,165,250,0.15); color: var(--blue); }
    .tier-premium  { background: rgba(139,92,246,0.2);  color: #a78bfa; }

    /* ── Usage tab ── */
    .key-form {
      display: flex;
      gap: 10px;
      margin-bottom: 24px;
    }
    .key-input-wrap {
      position: relative;
      flex: 1;
      min-width: 0;
    }
    .key-input {
      box-sizing: border-box;
      width: 100%;
      max-width: 100%;
      background: var(--input-fill);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      color: var(--text);
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 13px;
      line-height: 1.45;
      padding: 10px 40px 10px 12px;
      outline: none;
      transition: border-color 0.15s, box-shadow 0.15s;
      overflow-x: auto;
    }
    .key-input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 2px var(--accent-soft);
    }
    .key-input::placeholder {
      font-family: inherit;
      color: var(--muted);
      opacity: 1;
    }
    .toggle-key {
      position: absolute;
      right: 8px;
      top: 50%;
      transform: translateY(-50%);
      display: flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      background: none;
      border: none;
      border-radius: 6px;
      color: var(--muted);
      opacity: 0.5;
      cursor: pointer;
      padding: 0;
      transition: color 0.15s, background 0.15s, opacity 0.15s;
    }
    .toggle-key:hover {
      color: var(--text);
      opacity: 1;
      background: rgba(255, 255, 255, 0.04);
    }
    .toggle-key:active {
      transform: translateY(-50%) scale(0.95);
    }
    .toggle-key:focus {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    .toggle-key:focus:not(:focus-visible) {
      outline: none;
    }
    .toggle-key svg {
      width: 18px;
      height: 18px;
      pointer-events: none;
    }
    .load-btn {
      background: var(--surface-2);
      color: var(--text);
      border: 1px solid rgba(124, 58, 237, 0.4);
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 500;
      padding: 9px 18px;
      cursor: pointer;
      transition: background 0.15s, border-color 0.15s, color 0.15s;
      white-space: nowrap;
    }
    .load-btn:hover {
      background: var(--accent-soft);
      border-color: rgba(124, 58, 237, 0.55);
      color: var(--text);
    }
    .load-btn:disabled {
      opacity: 0.45;
      cursor: not-allowed;
      border-color: var(--border);
    }

    .usage-error {
      display: none;
      background: transparent;
      border: none;
      border-left: 2px solid var(--red);
      color: #fca5a5;
      border-radius: 0;
      padding: 6px 0 6px 12px;
      font-size: 13px;
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .usage-info {
      display: none;
      background: transparent;
      border: none;
      border-left: 2px solid var(--accent);
      color: var(--text-secondary);
      border-radius: 0;
      padding: 6px 0 6px 12px;
      font-size: 13px;
      margin-bottom: 12px;
      line-height: 1.5;
    }

    #tab-keys .account-shell.keys-shell {
      width: 100%;
      max-width: none;
      margin: 0;
      display: flex;
      flex-direction: column;
      align-items: stretch;
      box-sizing: border-box;
    }
    .inline-code {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 12px;
      font-weight: 500;
      color: var(--accent-ink);
      background: var(--accent-faint);
      border: 1px solid rgba(124, 58, 237, 0.2);
      padding: 2px 6px;
      border-radius: var(--radius-sm);
    }
    .keys-status-panel {
      width: 100%;
      border: none;
      border-radius: 0;
      background: transparent;
      padding: 0;
      margin-bottom: 1rem;
      box-sizing: border-box;
    }
    .keys-shell .keys-status-panel .usage-error,
    .keys-shell .keys-status-panel .usage-info {
      margin-bottom: 8px;
    }
    .keys-wizard-intro[hidden] {
      display: none !important;
    }
    #tab-keys .account-card.keys-auth-card,
    #tab-keys .account-card.keys-session-card {
      width: 100%;
      max-width: 100%;
      margin: 0;
      background: var(--surface);
      border: 1px solid var(--border);
      box-shadow: none;
      box-sizing: border-box;
      min-width: 0;
    }
    #tab-keys .account-card.keys-auth-card {
      padding: 20px 20px 18px;
      border-radius: var(--radius);
    }
    #tab-keys .account-card.keys-session-card {
      padding: 18px 20px;
      border-radius: var(--radius);
    }
    .keys-wizard-mount {
      display: none;
    }
    body.logged-in .keys-wizard-mount {
      display: block;
    }
    .keys-wizard-intro:not([hidden]) + .keys-wizard-mount {
      margin-top: 0;
    }
    .keys-messages {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-bottom: 0;
      max-width: none;
      width: 100%;
    }
    .keys-messages .usage-error,
    .keys-messages .usage-info {
      margin-bottom: 0;
    }
    .keys-shell .keys-messages .usage-error,
    .keys-shell .keys-messages .usage-info {
      font-size: 13px;
      line-height: 1.5;
    }
    .keys-auth-stack {
      max-width: 100%;
      margin: 0 0 20px 0;
      width: 100%;
    }
    .keys-auth-card .keys-auth-actions {
      margin-top: 6px;
    }
    .account-kicker {
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.07em;
      color: var(--muted);
      margin-bottom: 10px;
    }
    .account-auth-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr);
      gap: 14px;
    }
    .account-auth-note {
      margin-top: 4px;
      margin-bottom: 14px;
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.55;
    }
    .account-auth-mode {
      display: inline-flex;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 12px;
      background: rgba(0, 0, 0, 0.25);
    }
    .account-mode-btn {
      border: 0;
      background: transparent;
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
      padding: 8px 14px;
      cursor: pointer;
      transition: color 0.15s, background 0.15s;
    }
    .account-mode-btn.active {
      color: var(--text);
      background: rgba(255, 255, 255, 0.06);
      box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.35);
    }
    .account-inline-hint {
      font-size: 12px;
      color: var(--muted);
      margin-top: 4px;
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .account-quick-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 6px;
    }
    .account-summary-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 10px;
    }
    .account-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 10px;
      border: 1px solid var(--border);
      border-radius: 999px;
      font-size: 11px;
      color: var(--muted);
      background: rgba(255,255,255,0.02);
    }
    .account-empty {
      text-align: left;
      padding: 24px 12px 24px 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }
    .account-empty strong {
      color: var(--text);
      display: block;
      margin-bottom: 6px;
      font-size: 14px;
    }
    .account-key-table-wrap {
      border: 1px solid var(--border);
      border-radius: 10px;
      overflow: hidden;
      margin-top: 10px;
      background: rgba(0, 0, 0, 0.18);
    }
    .account-key-table-wrap .keys-table th {
      background: rgba(255,255,255,0.02);
    }
    .account-key-table-wrap .keys-table tbody tr:hover td {
      background: rgba(255, 255, 255, 0.03);
    }
    .key-status-badge {
      font-size: 11px;
      font-weight: 600;
      text-transform: capitalize;
      padding: 2px 8px;
      border-radius: 999px;
      border: 1px solid transparent;
    }
    .key-status-active {
      color: var(--green);
      background: rgba(52,211,153,0.12);
      border-color: rgba(52,211,153,0.3);
    }
    .key-status-inactive {
      color: var(--red);
      background: rgba(248,113,113,0.12);
      border-color: rgba(248,113,113,0.3);
    }

    #tab-usage .usage-form-card {
      max-width: none;
      width: 100%;
      margin: 0 0 20px 0;
      box-sizing: border-box;
    }
    #tab-usage .usage-key-row {
      margin-bottom: 0;
    }
    #tab-usage .usage-privacy-note.section-desc {
      margin: 0 0 16px 0;
      font-size: 14px;
      line-height: 1.55;
      color: var(--muted);
    }
    #tab-usage .usage-success {
      display: none;
      max-width: none;
      width: 100%;
      margin: 0 0 14px 0;
      background: transparent;
      border: none;
      border-left: 2px solid var(--green);
      color: #86efac;
      border-radius: 0;
      padding: 6px 0 6px 12px;
      font-size: 13px;
      font-weight: 400;
    }
    #tab-usage .usage-success.visible {
      display: block;
    }
    #tab-usage .usage-sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }
    #tab-usage .stats-card {
      max-width: none;
      width: 100%;
      margin: 0;
      box-shadow: none;
    }
    #tab-usage .stats-card.visible-loaded {
      animation: usageCardIn 0.35s ease-out;
    }
    @keyframes usageCardIn {
      from { opacity: 0; transform: translateY(6px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .usage-key-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px 12px;
      margin-top: 2px;
    }
    .usage-key-meta code {
      font-size: 11px;
      color: var(--muted);
      font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
      word-break: break-all;
      flex: 1;
      min-width: 0;
    }
    .usage-mini-btn {
      font-size: 11px;
      font-weight: 600;
      padding: 5px 10px;
      border-radius: 6px;
      border: 1px solid var(--border);
      background: var(--surface-2);
      color: var(--muted);
      cursor: pointer;
      flex-shrink: 0;
      transition: color 0.15s, border-color 0.15s;
    }
    .usage-mini-btn:hover {
      color: var(--accent-hover);
      border-color: rgba(124, 58, 237, 0.45);
    }
    .usage-mini-btn.copied {
      color: var(--green);
      border-color: rgba(52, 211, 153, 0.4);
    }
    .usage-chips-row {
      display: none;
      padding: 14px 20px;
      border-bottom: 1px solid var(--border);
      background: var(--surface-2);
      flex-wrap: wrap;
      gap: 14px 24px;
      align-items: flex-start;
    }
    .usage-chips-row.visible {
      display: flex;
    }
    @media (max-width: 560px) {
      .usage-chips-row.visible {
        flex-direction: column;
      }
    }
    .usage-chips-label {
      display: block;
      font-size: 10px;
      font-weight: 600;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.07em;
      margin-bottom: 8px;
    }
    .usage-scope-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .usage-scope-pill {
      font-size: 11px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 999px;
      background: var(--accent-soft);
      color: var(--accent-ink);
      border: 1px solid rgba(124, 58, 237, 0.28);
      text-transform: lowercase;
    }
    .usage-expires-note {
      font-size: 12px;
      color: var(--orange);
      line-height: 1.45;
    }
    .usage-expires-note.calm {
      color: var(--muted);
    }
    .usage-dev-inactive-banner {
      display: none;
      font-size: 12px;
      color: var(--orange);
      background: rgba(251, 146, 60, 0.08);
      border: 1px solid rgba(251, 146, 60, 0.28);
      border-radius: 6px;
      padding: 10px 12px;
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .usage-dev-inactive-banner.visible {
      display: block;
    }
    #usageLegacyAccount {
      background: rgba(251, 191, 36, 0.06);
    }
    .usage-dev-account-rows {
      display: grid;
      gap: 10px;
    }
    .usage-dev-row {
      display: grid;
      grid-template-columns: minmax(88px, 7.5rem) 1fr;
      gap: 10px 14px;
      align-items: start;
    }
    @media (max-width: 520px) {
      .usage-dev-row {
        grid-template-columns: 1fr;
        gap: 2px;
      }
      .usage-dev-k { min-width: 0; }
    }
    .usage-dev-k {
      color: var(--muted);
      font-size: 12px;
    }
    .usage-dev-v {
      font-size: 13px;
      color: var(--text);
      word-break: break-word;
      min-width: 0;
    }
    .usage-dev-id-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin-top: 4px;
      grid-column: 1 / -1;
    }
    #usageDevId {
      flex: 1;
      min-width: 0;
      font-size: 11px;
      line-height: 1.4;
    }
    .usage-copy-id {
      font-size: 12px;
      padding: 6px 12px;
      border-radius: 6px;
      border: 1px solid var(--border);
      background: var(--surface);
      color: var(--accent);
      cursor: pointer;
      font-weight: 600;
      transition: border-color 0.15s, color 0.15s;
    }
    .usage-copy-id:hover {
      border-color: var(--accent);
    }
    .usage-copy-id:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    .usage-copy-id.copied {
      color: var(--green);
      border-color: rgba(52, 211, 153, 0.4);
    }

    .keys-toolbar {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
    }

    .keys-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 11px;
    }

    .keys-table th,
    .keys-table td {
      padding: 8px 6px;
      border-bottom: 1px solid var(--border);
      text-align: left;
      color: var(--text);
      vertical-align: middle;
    }

    .keys-table th {
      color: var(--muted);
      font-size: 9px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }

    .keys-table-label {
      max-width: 100px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .keys-table-prefix {
      font-family: "SF Mono", monospace;
      font-size: 10px;
      max-width: 140px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .keys-table-scopes {
      font-size: 10px;
      color: var(--muted);
      max-width: 130px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .keys-table td button {
      white-space: nowrap;
      font-size: 10px;
      padding: 5px 10px;
    }

    .keys-table-wrapper {
      width: 100%;
      overflow-x: auto;
    }

    .modal-overlay {
      position: fixed;
      inset: 0;
      display: none;
      align-items: center;
      justify-content: center;
      background: rgba(11, 11, 18, 0.8);
      z-index: 200;
      padding: 20px;
    }

    .modal-overlay.open {
      display: flex;
    }

    .modal {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      width: min(760px, 100%);
      max-height: 90vh;
      overflow: hidden;
      box-shadow: 0 24px 40px rgba(0, 0, 0, 0.35);
    }

    .modal-body {
      padding: 24px;
      max-height: calc(90vh - 80px);
      overflow-y: auto;
      display: flex;
      flex-direction: column;
    }

    .modal-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 24px;
      border-bottom: 1px solid var(--border);
    }

    .modal-header h3 {
      margin: 0;
      font-size: 15px;
      letter-spacing: -0.02em;
    }

    .modal-close {
      background: none;
      border: none;
      color: var(--muted);
      cursor: pointer;
      font-size: 20px;
      line-height: 1;
    }

    .field-row {
      display: grid;
      gap: 10px;
      margin-bottom: 16px;
    }

    .field-row label {
      font-size: 12px;
      color: var(--muted);
      font-weight: 600;
      display: block;
      margin-bottom: 6px;
    }

    .field-input,
    .field-select,
    .field-date {
      width: 100%;
      background: var(--surface-2);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 12px 14px;
      color: var(--text);
      font-size: 13px;
      outline: none;
    }

    .checkbox-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(160px, 1fr));
      gap: 10px;
      margin-top: 8px;
    }

    .checkbox-option {
      display: flex;
      align-items: center;
      gap: 10px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 12px;
      cursor: pointer;
    }

    .checkbox-option input {
      accent-color: var(--accent);
      cursor: pointer;
    }

    .secondary-text {
      color: var(--muted);
      font-size: 12px;
      margin-top: 4px;
    }

    .secret-card {
      background: var(--surface-2);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 18px;
      margin-bottom: 16px;
      word-break: break-all;
      font-family: "SF Mono", "Fira Code", monospace;
      font-size: 13px;
    }

    .small-note {
      color: var(--muted);
      font-size: 12px;
      margin-top: 8px;
    }

    .danger-btn {
      background: rgba(248, 113, 113, 0.12);
      color: var(--red);
      border: 1px solid rgba(248, 113, 113, 0.35);
      border-radius: var(--radius);
      padding: 10px 18px;
      cursor: pointer;
      transition: background 0.15s;
    }

    .danger-btn:hover {
      background: rgba(248, 113, 113, 0.18);
    }

    .info-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      margin-bottom: 16px;
    }

    .info-chip {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 10px;
      font-size: 11px;
      border-radius: 999px;
      border: 1px solid var(--border);
      color: var(--muted);
      background: var(--surface-2);
    }

    .status-pill {
      padding: 4px 10px;
      border-radius: 999px;
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }

    .status-active {
      color: var(--green);
      background: rgba(52, 211, 153, 0.12);
      border: 1px solid rgba(52, 211, 153, 0.16);
    }

    .status-inactive {
      color: var(--red);
      background: rgba(248, 113, 113, 0.12);
      border: 1px solid rgba(248, 113, 113, 0.16);
    }

    .table-note {
      font-size: 12px;
      color: var(--muted);
      margin-top: 12px;
      text-align: left;
    }

    @media (max-width: 800px) {
      .keys-table th,
      .keys-table td {
        padding: 12px 8px;
      }
      .checkbox-grid {
        grid-template-columns: 1fr;
      }
    }

    .portal-shell {
      width: 100%;
      max-width: 100%;
      margin: 0;
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      align-items: stretch;
    }
    .portal-card--stack {
      margin-bottom: 14px;
    }
    .section.page-hero {
      margin-bottom: 18px;
    }
    .section.section--tight {
      margin-bottom: 22px;
    }

    /* ── Key issuance wizard ── */
    .keys-panel { display: none; }
    .keys-panel.visible { display: block; }
    .keys-loading {
      color: var(--muted);
      font-size: 13px;
      padding: 24px 0;
    }
    .step-track {
      display: flex;
      gap: 0;
      margin-bottom: 28px;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border);
    }
    .step-pill {
      flex: 1;
      text-align: left;
      padding: 10px 12px;
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: var(--muted);
      background: var(--surface);
      border-right: 1px solid var(--border);
    }
    .step-pill:last-child { border-right: none; }
    .step-pill.active {
      color: var(--text);
      background: var(--surface-2);
      box-shadow: inset 0 -2px 0 var(--accent);
    }
    .step-pill.done { color: var(--green); }
    .step-pill.skipped {
      opacity: 0.5;
      color: var(--muted);
      text-decoration: line-through;
      font-size: 10px;
    }
    .portal-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 20px 20px;
      box-shadow: none;
    }
    #tab-keys .keys-auth-card,
    #tab-keys .keys-session-card {
      max-width: min(30rem, 100%);
      align-self: flex-start;
    }
    .portal-field {
      margin-bottom: 18px;
      min-width: 0;
    }
    .portal-field:last-child {
      margin-bottom: 0;
    }
    .account-auth-grid .portal-field {
      margin-bottom: 0;
    }
    .portal-label {
      display: block;
      font-size: 12px;
      font-weight: 500;
      color: var(--muted);
      text-transform: none;
      letter-spacing: 0;
      margin-bottom: 6px;
    }
    .portal-input, .portal-select {
      box-sizing: border-box;
      width: 100%;
      max-width: 100%;
      background: var(--input-fill);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      color: var(--text);
      font-size: 14px;
      line-height: 1.45;
      padding: 10px 12px;
      outline: none;
      font-family: inherit;
      transition: border-color 0.15s, box-shadow 0.15s;
    }
    .portal-input::placeholder,
    .portal-select::placeholder {
      font-family: inherit;
      color: var(--muted);
      opacity: 1;
    }
    input[type="password"].portal-input,
    input[type="email"].portal-input {
      font-family: inherit;
    }
    .portal-input:focus, .portal-select:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 2px var(--accent-soft);
    }
    .portal-hint { font-size: 12px; color: var(--muted); margin-top: 6px; line-height: 1.5; }
    .tier-pick {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
    }
    @media (max-width: 600px) { .tier-pick { grid-template-columns: 1fr; } }
    .tier-option {
      position: relative;
    }
    .tier-option input {
      position: absolute;
      opacity: 0;
      pointer-events: none;
    }
    .tier-option label {
      display: block;
      padding: 14px 12px;
      border: 1px solid var(--border);
      border-radius: 8px;
      cursor: pointer;
      text-align: left;
      font-size: 12px;
      font-weight: 600;
      color: var(--muted);
      transition: border-color 0.15s, background 0.15s;
    }
    .tier-option input:checked + label {
      border-color: var(--accent);
      background: var(--accent-soft);
      color: var(--text);
    }
    .tier-option .tier-name { display: block; margin-bottom: 4px; font-size: 13px; }
    .tier-option .tier-note { font-size: 11px; font-weight: 500; color: var(--muted); }
    .wizard-actions {
      display: flex;
      gap: 10px;
      margin-top: 22px;
      flex-wrap: wrap;
    }
    .btn-secondary {
      background: transparent;
      color: var(--muted);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 500;
      padding: 9px 16px;
      cursor: pointer;
    }
    .btn-secondary:hover { color: var(--text); border-color: var(--muted); }
    .key-reveal-wrap {
      background: var(--code-bg);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 14px 16px;
      position: relative;
      margin-top: 12px;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }
    .key-reveal-wrap pre {
      font-family: "SF Mono", "Fira Code", monospace;
      font-size: 12px;
      white-space: pre;
      word-break: normal;
      overflow-wrap: normal;
      color: var(--green);
      line-height: 1.6;
      margin: 0;
      padding-right: 72px;
      min-width: min-content;
    }
    .key-reveal-wrap .copy-btn { top: 10px; right: 10px; }
    .danger-banner {
      background: rgba(251,146,60,0.1);
      border: 1px solid rgba(251,146,60,0.35);
      border-radius: var(--radius);
      padding: 14px 16px;
      font-size: 13px;
      color: var(--orange);
      line-height: 1.55;
      margin-bottom: 18px;
    }
    .danger-banner strong { color: #fdba74; }
    .billing-mock {
      border: 1px dashed var(--border);
      border-radius: 8px;
      padding: 16px;
      background: rgba(0,0,0,0.2);
    }
    .billing-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 12px;
    }
    @media (max-width: 500px) { .billing-row { grid-template-columns: 1fr; } }
    .chk-row {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-top: 16px;
      font-size: 13px;
      color: var(--text);
      line-height: 1.45;
    }
    .chk-row input { margin-top: 3px; accent-color: var(--accent); }

    .stats-card {
      display: none;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
    }
    .stats-header {
      padding: 16px 20px 14px;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
    }
    .stats-active {
      font-size: 11px;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: 999px;
      background: rgba(52,211,153,0.15);
      color: var(--green);
      flex-shrink: 0;
    }
    .stats-active.inactive {
      background: rgba(248,113,113,0.15);
      color: var(--red);
    }
    .stats-header-text {
      display: flex;
      flex-direction: column;
      gap: 4px;
      min-width: 0;
    }
    .stats-key-label {
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      line-height: 1.25;
    }
    .stats-owner-line {
      font-size: 12px;
      color: var(--muted);
      line-height: 1.35;
    }
    .stats-key-prefix {
      font-size: 11px;
      color: var(--muted);
      font-family: ui-monospace, monospace;
      word-break: break-all;
    }
    .usage-dev-account {
      display: none;
      padding: 14px 20px 16px;
      border-bottom: 1px solid var(--border);
      background: var(--accent-faint);
    }
    .usage-dev-account.visible {
      display: block;
    }
    .usage-dev-account-title {
      font-size: 11px;
      font-weight: 600;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: 10px;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
      gap: 0;
    }
    .stat-item {
      padding: 18px 20px;
      border-right: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .stat-item:last-child { border-right: none; }
    .stat-label {
      font-size: 11px;
      font-weight: 600;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: 6px;
    }
    .stat-value {
      font-size: 22px;
      font-weight: 700;
      color: var(--text);
      letter-spacing: -0.02em;
    }
    .stat-sub {
      font-size: 12px;
      color: var(--muted);
      margin-top: 2px;
    }

    .axios-note {
      background: var(--surface);
      border: 1px solid var(--border);
      border-left: 3px solid var(--accent);
      border-radius: var(--radius);
      padding: 14px 18px;
      margin-bottom: 32px;
      font-size: 13px;
      color: var(--muted);
    }
    .axios-note strong { color: var(--text); }

    @media (max-width: 900px) {
      header {
        padding: 0 var(--layout-pad);
      }
      .nav-menu-btn {
        display: inline-flex;
      }
      .nav-backdrop {
        pointer-events: auto;
      }
      body.nav-drawer-open .nav-backdrop {
        display: block;
        position: fixed;
        inset: 52px 0 0 0;
        z-index: 160;
        background: rgba(0, 0, 0, 0.42);
        backdrop-filter: blur(2px);
      }
      .app-body {
        flex-direction: row;
        padding: 0;
        max-width: 100%;
      }
      .app-sidebar {
        position: fixed;
        top: 52px;
        left: 0;
        bottom: 0;
        width: min(var(--sidebar-w), 88vw);
        z-index: 200;
        transform: translate3d(-105%, 0, 0);
        transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
        border-right: 1px solid var(--border);
        border-bottom: none;
        background: var(--bg);
        box-shadow: 16px 0 48px rgba(0, 0, 0, 0.35);
      }
      @media (prefers-reduced-motion: reduce) {
        .app-sidebar {
          transition: none;
        }
      }
      body.nav-drawer-open .app-sidebar {
        transform: translate3d(0, 0, 0);
      }
      .sidebar-nav {
        display: block;
      }
      .sidebar-rail {
        margin: 0 0 12px;
      }
      #sidebarKeysSignedIn:not([hidden]) {
        flex-direction: column;
      }
      .sidebar-keys-signed .sidebar-link {
        text-align: left;
        font-size: 13px;
        padding: 8px 10px 8px 8px;
      }
      .sidebar-keys-gate {
        min-width: 0;
      }
      .main-area {
        width: 100%;
        padding: 20px var(--layout-pad) 64px var(--layout-pad);
      }
    }
    @media (max-width: 600px) {
      :root {
        --layout-pad: 16px;
      }
      header { padding: 0 var(--layout-pad); }
      .app-body { padding: 0; }
      .main-area { padding: 18px var(--layout-pad) 56px var(--layout-pad); }
      .endpoint-desc { display: none; }
      .key-form { flex-direction: column; }
      .stats-grid { grid-template-columns: 1fr 1fr; }
      .sidebar-link { font-size: 12px; padding: 8px 10px 8px 8px; }
    }