*, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    :root {
      --bg-primary:    #0e0e12;
      --bg-panel:      #1a1a22;
      --bg-cell:       #131318;
      --border:        #2a2a38;
      --text-primary:  #e8e8f0;
      --text-muted:    #6b6b88;
      --text-label:    #9898b8;
      --accent:        #5a5aff;
      --accent-dim:    #3a3a99;

      /* Piece colors */
      --col-i: #00cfcf;
      --col-o: #f0c000;
      --col-t: #a020f0;
      --col-s: #00c000;
      --col-z: #d00000;
      --col-j: #2060d0;
      --col-l: #e06000;
      --col-garbage: #6a6a7a;
    }

    html, body {
      height: 100%;
      background: var(--bg-primary);
      color: var(--text-primary);
      font-family: 'Segoe UI', system-ui, sans-serif;
      overflow: hidden;
    }

    /* ─── Top bar ──────────────────────────────────────────────────────── */
    #topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 16px;
      border-bottom: 1px solid var(--border);
      background: var(--bg-panel);
      height: 44px;
      flex-shrink: 0;
    }

    #topbar .logo {
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 2px;
      color: var(--accent);
      text-transform: uppercase;
    }

    #topbar .mode-badge {
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 1px;
      padding: 3px 10px;
      border-radius: 4px;
      background: var(--accent-dim);
      color: var(--text-primary);
      text-transform: uppercase;
    }

    #topbar .topbar-actions {
      display: flex;
      gap: 8px;
      align-items: center;
    }

    /* ─── Spin mode toggle ─────────────────────────────────────────────── */
    #spin-mode-select {
      background: var(--bg-cell);
      border: 1px solid var(--border);
      color: var(--text-label);
      border-radius: 4px;
      padding: 4px 7px;
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 0.5px;
      cursor: pointer;
      outline: none;
    }
    #spin-mode-select:hover,
    #spin-mode-select:focus {
      border-color: var(--accent);
      color: var(--text-primary);
    }

    .btn {
      background: var(--bg-cell);
      border: 1px solid var(--border);
      color: var(--text-primary);
      padding: 5px 12px;
      border-radius: 4px;
      font-size: 12px;
      cursor: pointer;
      transition: background 0.15s, border-color 0.15s;
    }
    .btn:hover {
      background: var(--border);
      border-color: var(--accent);
    }
    .btn.primary {
      background: var(--accent-dim);
      border-color: var(--accent);
    }
    .btn.primary:hover {
      background: var(--accent);
    }

    /* ─── Main layout ──────────────────────────────────────────────────── */
    #app {
      display: flex;
      flex-direction: column;
      height: 100vh;
    }

    #game-area {
      display: flex;
      align-items: center;
      justify-content: center;
      flex: 1;
      gap: 12px;
      padding: 12px;
      min-width: 0;
      overflow: hidden;
    }

    /* ─── Side panels ──────────────────────────────────────────────────── */
    .side-panel {
      display: flex;
      flex-direction: column;
      gap: 10px;
      flex-shrink: 0;
      width: 120px;
    }

    .panel-box {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: 6px;
      padding: 10px;
    }

    .panel-label {
      font-size: 10px;
      font-weight: 600;
      letter-spacing: 1.5px;
      color: var(--text-muted);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    /* Hold / Next mini-canvases */
    .mini-canvas-wrap {
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--bg-cell);
      border-radius: 4px;
      padding: 6px;
      min-height: 52px;
    }

    .mini-canvas-wrap canvas {
      display: block;
      image-rendering: pixelated;
    }

    /* Next queue: 5 pieces stacked */
    #next-queue-list {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    /* ─── Statistics panel ─────────────────────────────────────────────── */
    #stats-panel {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .stat-row {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      gap: 4px;
    }

    .stat-label {
      font-size: 10px;
      color: var(--text-label);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .stat-value {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-primary);
      font-variant-numeric: tabular-nums;
    }

    /* ─── Goal panel ───────────────────────────────────────────────────── */
    #goal-box .goal-text {
      font-size: 13px;
      color: var(--text-primary);
      font-weight: 600;
      line-height: 1.55;
      min-height: 28px;
      word-break: break-word;
    }
    #goal-box .goal-text.empty {
      font-size: 11px;
      color: var(--text-muted);
      font-weight: 400;
      font-style: italic;
    }
    #goal-box.goal-active {
      border-color: var(--accent-dim);
      background: rgba(90, 90, 255, 0.06);
    }
    #goal-box.goal-active .panel-label { color: var(--accent); }

    /* ─── Queue exhausted banner ───────────────────────────────────────── */
    #queue-banner {
      display: none;
      position: absolute;
      left: 0; right: 0; bottom: 0;
      background: rgba(10, 10, 20, 0.82);
      border-top: 1px solid var(--accent-dim);
      padding: 8px 14px;
      text-align: center;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: var(--text-primary);
      z-index: 4;
    }
    #queue-banner.visible { display: block; }
    #queue-banner .qb-hint {
      display: block;
      margin-top: 3px;
      font-size: 10px;
      font-weight: 400;
      color: var(--text-muted);
      letter-spacing: 0.3px;
    }

    /* ─── DAS/ARR indicators ───────────────────────────────────────────── */
    #das-indicators {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .indicator-row {
      display: flex;
      align-items: center;
      gap: 5px;
    }

    .indicator-label {
      font-size: 9px;
      color: var(--text-muted);
      width: 28px;
      text-align: right;
      letter-spacing: 0.5px;
    }

    .indicator-bar-bg {
      flex: 1;
      height: 4px;
      background: var(--bg-cell);
      border-radius: 2px;
      overflow: hidden;
    }

    .indicator-bar-fill {
      height: 100%;
      width: 0%;
      border-radius: 2px;
      background: var(--accent);
      transition: width 0.05s linear;
    }

    /* ─── Playfield ────────────────────────────────────────────────────── */
    #playfield-wrap {
      position: relative;
      flex-shrink: 0;
    }

    #playfield {
      display: block;
      image-rendering: pixelated;
      border: 2px solid var(--border);
      border-radius: 4px;
      background: var(--bg-cell);
    }

    /* ─── Bundle nav bar (below playfield) ────────────────────────────── */
    #bundle-nav {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 8px;
      padding: 6px 0 0;
    }

    #nav-progress-wrap {
      flex-basis: 100%;
      height: 3px;
      background: var(--bg-cell);
      border-radius: 2px;
      overflow: hidden;
      margin-top: 2px;
    }
    #nav-progress-fill {
      height: 100%;
      width: 0%;
      background: var(--accent);
      border-radius: 2px;
      transition: width 0.15s ease;
    }

    #bundle-nav .nav-btn {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      color: var(--text-primary);
      width: 28px;
      height: 28px;
      border-radius: 4px;
      font-size: 14px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background 0.15s;
    }
    #bundle-nav .nav-btn:hover {
      background: var(--border);
    }

    #bundle-nav .pos-indicator {
      font-size: 12px;
      color: var(--text-label);
      min-width: 80px;
      text-align: center;
    }

    #bundle-nav .pos-input {
      width: 44px;
      text-align: center;
      background: var(--bg-cell);
      border: 1px solid var(--border);
      color: var(--text-primary);
      border-radius: 4px;
      padding: 3px 4px;
      font-size: 12px;
    }
    #bundle-nav .pos-input:focus {
      outline: none;
      border-color: var(--accent);
    }

    #bundle-nav .filter-input {
      background: var(--bg-cell);
      border: 1px solid var(--border);
      color: var(--text-primary);
      border-radius: 4px;
      padding: 3px 7px;
      font-size: 11px;
      width: 120px;
    }
    #bundle-nav .filter-input:focus {
      outline: none;
      border-color: var(--accent);
    }
    #bundle-nav .filter-input::placeholder {
      color: var(--text-muted);
    }

    /* ─── Editor toolbar (hidden in player mode) ───────────────────────── */
    #editor-toolbar {
      display: none; /* toggled by JS later */
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 6px 12px;
      background: var(--bg-panel);
      border-top: 1px solid var(--border);
      flex-wrap: wrap;
    }

    .color-swatch {
      width: 22px;
      height: 22px;
      border-radius: 3px;
      border: 2px solid transparent;
      cursor: pointer;
      transition: border-color 0.1s, transform 0.1s;
    }
    .color-swatch:hover,
    .color-swatch.active {
      border-color: #fff;
      transform: scale(1.15);
    }
    .color-swatch.erase { background: var(--bg-cell); border-color: var(--border); }
    .color-swatch[data-color="0"]  { background: var(--bg-cell); }
    .color-swatch[data-color="1"]  { background: var(--col-garbage); }
    .color-swatch[data-color="2"]  { background: var(--col-i); }
    .color-swatch[data-color="3"]  { background: var(--col-o); }
    .color-swatch[data-color="4"]  { background: var(--col-t); }
    .color-swatch[data-color="5"]  { background: var(--col-s); }
    .color-swatch[data-color="6"]  { background: var(--col-z); }
    .color-swatch[data-color="7"]  { background: var(--col-j); }
    .color-swatch[data-color="8"]  { background: var(--col-l); }

    .toolbar-divider {
      width: 1px;
      height: 20px;
      background: var(--border);
      margin: 0 2px;
    }

    /* ─── Editor paint cursor ─────────────────────────────────────────── */
    #playfield.editor-active { cursor: crosshair; }

    /* ─── Overlay / Pause screen ───────────────────────────────────────── */
    #overlay {
      display: none;
      position: absolute;
      inset: 0;
      background: rgba(0,0,0,0.75);
      border-radius: 4px;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 12px;
      z-index: 10;
    }
    #overlay.visible {
      display: flex;
    }
    #overlay .overlay-title {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--text-primary);
    }
    #overlay .overlay-sub {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* ─── Spin label ───────────────────────────────────────────────────── */
    @keyframes spinFade {
      0%   { opacity: 1; transform: translateY(0);     }
      65%  { opacity: 1; transform: translateY(-6px);  }
      100% { opacity: 0; transform: translateY(-14px); }
    }

    #spin-label {
      position: absolute;
      left: 0; right: 0;
      top: 30%;
      text-align: center;
      pointer-events: none;
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 1px;
      color: var(--col-t);
      text-shadow: 0 0 12px rgba(160, 32, 240, 0.7);
      opacity: 0;
      z-index: 5;
    }
    #spin-label.show {
      animation: spinFade 2s ease-out forwards;
    }

    /* ─── Settings modal ──────────────────────────────────────────────── */
    #settings-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.72);
      z-index: 100;
      align-items: center;
      justify-content: center;
    }
    #settings-backdrop.open { display: flex; }

    #settings-panel {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: 8px;
      width: min(520px, 95vw);
      max-height: 90vh;
      overflow-y: auto;
      padding: 20px 24px;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .settings-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .settings-title {
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--text-primary);
    }
    .settings-close {
      background: none;
      border: none;
      color: var(--text-muted);
      font-size: 18px;
      cursor: pointer;
      padding: 2px 7px;
      border-radius: 4px;
    }
    .settings-close:hover { color: var(--text-primary); background: var(--border); }

    .settings-section-title {
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--text-muted);
      border-bottom: 1px solid var(--border);
      padding-bottom: 5px;
      margin-bottom: 10px;
    }

    /* Slider rows */
    .slider-row {
      display: grid;
      grid-template-columns: 72px 1fr 58px;
      align-items: center;
      gap: 10px;
      margin-bottom: 7px;
    }
    .slider-row label {
      font-size: 11px;
      color: var(--text-label);
      text-align: right;
    }
    input[type="range"].setting-slider {
      width: 100%;
      accent-color: var(--accent);
      cursor: pointer;
    }
    .slider-val {
      background: var(--bg-cell);
      border: 1px solid var(--border);
      color: var(--text-primary);
      border-radius: 4px;
      padding: 3px 4px;
      font-size: 10px;
      font-variant-numeric: tabular-nums;
      text-align: center;
    }

    /* Keybind grid */
    .keybind-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 6px 20px;
    }
    .keybind-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 6px;
    }
    .keybind-label {
      font-size: 11px;
      color: var(--text-label);
      flex: 1;
    }
    .keybind-btn {
      background: var(--bg-cell);
      border: 1px solid var(--border);
      color: var(--text-primary);
      border-radius: 4px;
      padding: 3px 8px;
      font-size: 11px;
      font-family: monospace;
      cursor: pointer;
      min-width: 66px;
      text-align: center;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .keybind-btn:hover  { border-color: var(--accent); }
    .keybind-btn.capturing { border-color: var(--accent); background: var(--accent-dim); }
    .keybind-btn.conflict  { border-color: #c05050; color: #e08080; }

    /* Settings select */
    .settings-select {
      background: var(--bg-cell);
      border: 1px solid var(--border);
      color: var(--text-primary);
      border-radius: 4px;
      padding: 5px 8px;
      font-size: 12px;
      width: 100%;
      cursor: pointer;
    }
    .settings-select:focus { outline: none; border-color: var(--accent); }

    /* ─── Responsive scaling ───────────────────────────────────────────── */
    /*
      The playfield canvas is sized dynamically by JS based on available height.
      Below we ensure the overall game area doesn't overflow.
    */
    @media (max-width: 680px) {
      .side-panel { width: 90px; }
      #bundle-nav .filter-input { display: none; }
    }

    /* ─── Main menu ───────────────────────────────────────────────────── */
    #main-menu {
      position: fixed;
      inset: 0;
      background: rgba(14, 14, 18, 0.97);
      z-index: 400;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    #main-menu.hidden { display: none; }

    #main-menu-panel {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 28px;
    }

    .mm-logo {
      font-size: 38px;
      font-weight: 900;
      letter-spacing: 7px;
      color: var(--accent);
      text-transform: uppercase;
    }

    .mm-tagline {
      font-size: 11px;
      color: var(--text-muted);
      letter-spacing: 2.5px;
      text-transform: uppercase;
      margin-top: -20px;
    }

    .mm-options {
      display: flex;
      flex-direction: column;
      gap: 10px;
      width: min(300px, 88vw);
    }

    .mm-option-btn {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 16px 20px;
      cursor: pointer;
      text-align: left;
      display: flex;
      flex-direction: column;
      gap: 4px;
      transition: border-color 0.15s, background 0.15s;
    }
    .mm-option-btn:hover {
      border-color: var(--accent);
      background: rgba(90, 90, 255, 0.08);
    }
    .mm-option-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

    .mm-btn-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: 0.3px;
    }

    .mm-btn-sub {
      font-size: 11px;
      color: var(--text-muted);
    }

    /* ─── About modal ─────────────────────────────────────────────────── */
    #about-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.55);
      z-index: 450;
      align-items: center;
      justify-content: center;
    }
    #about-backdrop.open { display: flex; }

    .about-panel {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: 10px;
      width: min(540px, 94vw);
      max-height: 82vh;
      overflow-y: auto;
      padding: 24px 28px;
      scrollbar-width: thin;
      scrollbar-color: var(--border) transparent;
    }

    .about-section {
      margin-bottom: 22px;
    }

    .about-section-title {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 8px;
    }

    .about-body {
      font-size: 13px;
      color: var(--text-primary);
      line-height: 1.65;
      margin: 0;
    }
    .about-body em {
      font-style: italic;
      color: var(--text-primary);
    }
    .about-body code {
      font-family: monospace;
      background: rgba(255,255,255,0.07);
      border-radius: 3px;
      padding: 1px 5px;
      font-size: 12px;
    }

    .about-feature-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .about-feature {
      display: grid;
      grid-template-columns: 120px 1fr;
      gap: 10px;
      align-items: baseline;
    }

    .about-feature-name {
      font-size: 12px;
      font-weight: 700;
      color: var(--text-primary);
      white-space: nowrap;
    }

    .about-feature-desc {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    .about-feature-desc code {
      font-family: monospace;
      background: rgba(255,255,255,0.07);
      border-radius: 3px;
      padding: 1px 4px;
      font-size: 11px;
    }

    .about-footer {
      display: flex;
      justify-content: flex-end;
      padding-top: 4px;
      border-top: 1px solid var(--border);
      margin-top: 4px;
    }

/* ─── Play-or-Edit dialog ──────────────────────────────────────────── */
    #poe-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.72);
      z-index: 350;
      align-items: center;
      justify-content: center;
    }
    #poe-backdrop.open { display: flex; }

    /* ─── Screenshot modal ────────────────────────────────────────────── */
    #screenshot-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.72);
      z-index: 150;
      align-items: center;
      justify-content: center;
    }
    #screenshot-backdrop.open { display: flex; }

    #screenshot-panel {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: 8px;
      width: min(400px, 94vw);
      padding: 20px 22px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    #screenshot-panel .ss-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    #screenshot-panel .ss-title {
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--text-primary);
    }

    #ss-preview-wrap {
      background: var(--bg-primary);
      border: 1px solid var(--border);
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8px;
      min-height: 100px;
    }

    #ss-preview {
      max-width: 100%;
      max-height: 320px;
      display: block;
      border-radius: 2px;
    }

    .ss-option-row {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      color: var(--text-label);
      cursor: pointer;
      user-select: none;
    }

    .ss-option-row input[type="checkbox"] {
      accent-color: var(--accent);
      width: 14px;
      height: 14px;
      cursor: pointer;
    }

    .ss-actions {
      display: flex;
      gap: 8px;
      justify-content: flex-end;
    }

    /* ─── Load-image modal ────────────────────────────────────────────── */
    #loadimg-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.72);
      z-index: 150;
      align-items: center;
      justify-content: center;
    }
    #loadimg-backdrop.open { display: flex; }

    #loadimg-panel {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: 8px;
      width: min(920px, 96vw);
      padding: 16px 18px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      max-height: 94vh;
      overflow: hidden;
    }

    #loadimg-body {
      display: flex;
      gap: 14px;
      flex: 1;
      min-height: 0;
      overflow: hidden;
    }

    #loadimg-left-col {
      flex: 1;
      min-width: 0;
      display: flex;
      flex-direction: column;
      gap: 8px;
      overflow: hidden;
    }

    #loadimg-right-col {
      flex: 0 0 260px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      overflow-y: auto;
    }

    #loadimg-preview-wrap {
      background: var(--bg-primary);
      border: 1px solid var(--border);
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8px;
      min-height: 80px;
    }

    #loadimg-image-wrap {
      flex: 1;
      min-height: 150px;
      background: var(--bg-primary);
      border: 1px solid var(--border);
      border-radius: 4px;
      overflow: hidden;
      display: flex;
      align-items: flex-start;
      justify-content: flex-start;
    }

    #loadimg-image-canvas {
      display: block;
      cursor: crosshair;
      user-select: none;
    }

    #loadimg-preview { display: block; border-radius: 2px; }

    .loadimg-field-row {
      display: flex;
      gap: 12px;
      align-items: center;
      flex-wrap: wrap;
    }

    .loadimg-field-row label,
    #loadimg-right-col > label {
      font-size: 12px;
      color: var(--text-label);
      display: flex;
      align-items: center;
      gap: 5px;
    }

    .loadimg-field-row input,
    .loadimg-field-row select,
    #loadimg-right-col input[type="text"] {
      background: var(--bg-cell);
      border: 1px solid var(--border);
      color: var(--text-primary);
      border-radius: 3px;
      padding: 3px 6px;
      font-size: 11px;
    }
    .loadimg-field-row input:focus,
    .loadimg-field-row select:focus,
    #loadimg-right-col input[type="text"]:focus {
      outline: none;
      border-color: var(--accent);
    }

    #loadimg-name-input { width: 100%; }

    /* ─── Import drag overlay ─────────────────────────────────────────── */
    #drag-overlay {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 200;
      background: rgba(90, 90, 255, 0.18);
      border: 3px dashed var(--accent);
      align-items: center;
      justify-content: center;
      pointer-events: none;
    }
    #drag-overlay.active { display: flex; }
    #drag-overlay span {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: 2px;
      color: var(--accent);
      text-transform: uppercase;
      background: var(--bg-primary);
      padding: 14px 28px;
      border-radius: 8px;
      border: 1px solid var(--accent);
    }

    /* ─── Import modals (shared backdrop) ────────────────────────────── */
    #import-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.72);
      z-index: 150;
      align-items: center;
      justify-content: center;
    }
    #import-backdrop.open { display: flex; }

    .import-panel {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: 8px;
      width: min(440px, 92vw);
      padding: 22px 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .import-panel-title {
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--text-primary);
    }

    .import-panel-msg {
      font-size: 13px;
      color: var(--text-label);
      line-height: 1.55;
      white-space: pre-wrap;
      word-break: break-word;
    }

    .import-panel-msg.error { color: #f07070; }

    .import-panel-dup {
      font-size: 12px;
      color: var(--text-muted);
      background: var(--bg-cell);
      border: 1px solid var(--border);
      border-radius: 4px;
      padding: 8px 10px;
      max-height: 120px;
      overflow-y: auto;
    }

    .import-panel-actions {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

/* ─── Puzzle Browser ──────────────────────────────────────────────────────── */

#puzzle-browser {
  position: fixed;
  inset: 0;
  background: rgba(14, 14, 18, 0.97);
  z-index: 410;
  display: flex;
  align-items: center;
  justify-content: center;
}
#puzzle-browser.hidden { display: none; }

#pb-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: min(680px, 96vw);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#pb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.pb-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-primary);
}

#pb-body {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

#pb-filters {
  flex: 0 0 190px;
  border-right: 1px solid var(--border);
  padding: 16px 14px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.pb-filter-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pb-filter-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.pb-check-row,
.pb-radio-row {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--text-label);
  cursor: pointer;
  user-select: none;
}
.pb-check-row input,
.pb-radio-row input { accent-color: var(--accent); cursor: pointer; }
.pb-check-row:hover,
.pb-radio-row:hover { color: var(--text-primary); }

#pb-main {
  flex: 1;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
}

#pb-count-row { font-size: 13px; color: var(--text-label); }
#pb-count { font-weight: 700; color: var(--text-primary); }

.pb-toggle-list {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 12px;
  cursor: pointer;
  padding: 0;
  text-align: left;
}
.pb-toggle-list:hover { text-decoration: underline; }

#pb-list-wrap {
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
  max-height: 200px;
  overflow-y: auto;
}

#pb-puzzle-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}
#pb-puzzle-table th {
  background: var(--bg-cell);
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 10px;
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
#pb-puzzle-table td {
  padding: 6px 10px;
  color: var(--text-label);
  border-bottom: 1px solid var(--border);
}
#pb-puzzle-table tr:last-child td { border-bottom: none; }
#pb-puzzle-table tr:hover td { background: rgba(90, 90, 255, 0.07); color: var(--text-primary); }

#pb-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 220px;
}
#pb-actions .btn {
  width: 100%;
  padding: 10px 0;
  font-size: 13px;
  text-align: center;
}

#pb-error {
  font-size: 12px;
  color: #f07070;
  line-height: 1.5;
}

/* ─── Puzzle nav bar (shown during random puzzle mode) ───────────────────── */

#puzzle-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 5px 0;
  background: var(--bg-panel);
  border-top: 1px solid var(--accent-dim);
}
#puzzle-nav .btn { font-size: 12px; padding: 4px 12px; }
#pb-nav-label {
  font-size: 12px;
  color: var(--text-label);
  min-width: 120px;
  text-align: center;
}