* { box-sizing: border-box; margin: 0; padding: 0; }
  :root {
    --bg-dark:   #1A1A2E;
    --bg-mid:    #16213E;
    --bg-panel:  #0F3460;
    --bg-card:   #1E2A45;
    --text-main: #E8EAF6;
    --text-dim:  #7986CB;
    --text-muted:#455A7A;
    --green:     #4CAF50;
    --green-hov: #388E3C;
    --red:       #C0392B;
    --accent:    #4A9EFF;
    --accent-hov:#1565C0;
    --inactive:  #2A3A5A;
    --orange:    #FF9800;
    --orange-hov:#E65100;
    --blue:      #1565C0;
    --blue-hov:  #0D47A1;
    --grn:       #2E7D32;
    --grn-hov:   #1B5E20;
    --org:       #E65100;
    --org-hov:   #BF360C;
    --purp:      #6A1B9A;
    --purp-hov:  #4A148C;
    --pink:      #AD1457;
    --pink-hov:  #880E4F;
    --brown:     #8D6E63;
    --brown-hov: #6D4C41;
    --blue-dk:   #0D2B6E;
    --blue-dk-hov:#081A4A;
    --teal:      #00695C;
    --teal-hov:  #004D40;
  }
  body {
    background: var(--bg-dark);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', sans-serif;
    display: flex; flex-direction: column;
    height: 100vh; overflow: hidden;
  }
  #topbar {
    background: var(--bg-mid);
    display: flex; align-items: center;
    padding: 0 16px; height: 48px; flex-shrink: 0;
    gap: 8px;
  }
  #topbar .icon { font-size: 26px; font-weight: 700; color: var(--orange); margin-right: 4px; line-height:1; }
  #topbar .title { font-size: 20px; font-weight: 700; white-space: nowrap; }
  #breadcrumb { flex: 1; font-size: 12px; color: var(--text-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 0 8px; }
  #breadcrumb span[style*="pointer"]:hover { color: var(--accent); }
  #selbar {
    background: var(--bg-panel);
    padding: 6px 16px; display: none;
    align-items: center; gap: 8px; flex-shrink: 0;
  }
  #selbar .sel-name { font-size: 14px; font-weight: 700; }
  #selbar .sel-deg  { font-size: 13px; font-family: 'SF Mono', 'Fira Mono', monospace; color: var(--accent); }
  #content { flex: 1; overflow: hidden; background: var(--bg-mid); }
  #statusbar { padding: 3px 16px; font-size: 12px; color: var(--text-dim); background: var(--bg-dark); flex-shrink: 0; }
  #copyright  { padding: 2px 16px 4px; font-size: 10px; color: var(--text-muted); background: var(--bg-dark); flex-shrink: 0; display: flex; align-items: center; justify-content: center; gap: 12px; letter-spacing: 0.03em; }
  #copyright a.donate-btn { color: #fff; background: #003087; border-radius: 4px; padding: 2px 10px; font-size: 10px; font-weight: 600; text-decoration: none; letter-spacing: 0.04em; opacity: 0.75; transition: opacity 0.15s; }
  #copyright a.donate-btn:hover { opacity: 1; }
  button {
    border: none; border-radius: 8px; cursor: pointer;
    font-family: inherit; font-weight: 600; transition: background 0.15s;
    white-space: nowrap;
  }
  button:hover { filter: brightness(1.15); }
  button:active { filter: brightness(0.9); }
  button.btn-accent   { background: var(--accent);   color: #111; }
  button.btn-inactive { background: var(--inactive);  color: var(--text-main); }
  button.btn-green    { background: var(--green);    color: #111; }
  button.btn-red      { background: var(--red);      color: #fff; }
  button.btn-blue     { background: var(--blue);     color: var(--text-main); }
  button.btn-grn      { background: var(--grn);      color: var(--text-main); }
  button.btn-org      { background: var(--org);      color: var(--text-main); }
  button.btn-purp     { background: var(--purp);     color: var(--text-main); }
  button.btn-pink     { background: var(--pink);     color: var(--text-main); }
  button.btn-brown    { background: var(--brown);    color: var(--text-main); }
  button.btn-blue-dk  { background: var(--blue-dk);  color: var(--text-main); }
  button.btn-teal     { background: var(--teal);     color: var(--text-main); }
  button.btn-small    { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
  button.btn-med      { padding: 6px 14px; font-size: 12px; }
  button.btn-info     { background: var(--bg-panel); color: var(--text-dim); width:28px; height:28px; border-radius:6px; padding:0; font-size:12px; flex-shrink:0; }
  button.btn-info:hover { background: var(--accent); color: var(--text-main); }
  /* Desktop tiers: mode rows in group cards + relation rows use the tiny size */
  .group-sub button.btn-small, .rel-row button.btn-small { font-size: 11px; }
  .group-sub button.btn-info  { width: 24px; height: 24px; font-size: 11px; }
  .home-wrapper { padding: 24px; height: 100%; overflow-y: auto; display: flex; flex-direction: column; align-items: center; }
  .home-inner { width: 100%; max-width: 520px; }
  .home-hint { font-size: 14px; font-weight: 700; color: var(--text-dim); margin-bottom: 18px; }
  .cat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; width: 100%; }
  .cat-btn { height: 60px; font-size: 14px; font-weight: 700; border-radius: 10px; width: 100%; }
  .cat-cell { position: relative; width: 100%; }
  .exotic-cell { position: relative; width: 300px; }
  .cat-info-badge { position: absolute; top: 7px; right: 7px; width: 20px; height: 20px;
                    border: 1.5px solid #B0B6C4; border-radius: 50%; color: #B0B6C4;
                    font-family: Georgia, 'Times New Roman', serif; font-size: 13px;
                    line-height: 17px; text-align: center; cursor: pointer;
                    background: transparent; padding: 0; }
  .cat-info-badge:hover { border-color: var(--text-main); color: var(--text-main); }
  .exotic-row { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--bg-panel); display: flex; justify-content: center; width: 100%; }
  .exotic-btn { height: 60px; width: 300px; font-size: 14px; font-weight: 700; border-radius: 10px; }
  .cat-view { height: 100%; display: flex; flex-direction: column; }
  .nav-row { display: flex; align-items: center; gap: 10px; padding: 10px 14px 6px; flex-shrink: 0; }
  .nav-row .nav-title { font-size: 14px; font-weight: 700; }
  .list-scroll { flex: 1; overflow-y: auto; padding: 0 8px 16px; }
  .item-row {
    background: var(--bg-card); border-radius: 8px;
    display: flex; align-items: center; padding: 8px 12px;
    margin: 3px 0; gap: 8px;
  }
  .item-name { font-family: 'SF Mono', 'Fira Mono', monospace; font-size: 13px; flex: 1; }
  .item-extra { font-size: 11px; color: var(--text-main); font-family: 'SF Mono', 'Fira Mono', monospace; }
  .item-btns  { display: flex; gap: 4px; flex-shrink: 0; }
  .group-card { background: var(--bg-card); border-radius: 8px; margin: 5px 0; overflow: hidden; }
  .group-hdr  { background: var(--bg-panel); padding: 6px 12px; font-size: 12px; font-weight: 400; }
  .group-sub  { display: flex; align-items: center; padding: 3px 8px 3px 12px; gap: 6px; }
  .sub-ttype  { font-size: 11px; color: var(--text-main); font-family: 'SF Mono', monospace; width: 150px; flex-shrink: 0; }
  .sub-formula{ font-size: 11px; font-family: 'SF Mono', monospace; flex: 1; }
  .sub-btns   { display: flex; gap: 3px; flex-shrink: 0; }
  .sub-mode   { font-size: 11px; color: var(--text-main); font-family: 'SF Mono', monospace; width: 70px; flex-shrink: 0; }
  .sub-spell  { font-size: 11px; font-family: 'SF Mono', monospace; flex: 1; }
  .sub-nature { font-size: 11px; font-family: 'SF Mono', monospace; flex-shrink: 0; padding-right: 6px; }
  .sub-hex    { font-size: 11px; font-family: 'SF Mono', monospace; flex-shrink: 0; color: var(--text-dim); padding-right: 6px; }
  .sub-nathead { font-size: 11px; color: var(--text-dim); padding: 8px 12px 1px; }
  .sub-tspell { font-size: 11px; color: var(--text-main); font-family: 'SF Mono', monospace; flex: 1; }
  .sect-hdr { font-size: 12px; color: var(--text-main); padding: 10px 12px 4px; }
  .sect-subhdr { font-size: 11px; color: var(--text-dim); padding: 6px 12px 2px 24px; }
  .sect-div  { height: 1px; background: var(--bg-panel); margin: 10px 8px 4px; }
  .l1-view { height: 100%; display: flex; flex-direction: column; }
  .l1-cols { flex: 1; display: flex; gap: 0; overflow: hidden; }
  .l1-col  { flex: 1; display: flex; flex-direction: column; background: var(--bg-card); border-radius: 8px; margin: 0 4px 8px; overflow: hidden; }
  .l1-col-hdr { padding: 10px 12px 4px; font-size: 14px; font-weight: 700; flex-shrink: 0; }
  .l1-col-hdr.within    { color: var(--green); }
  .l1-col-hdr.containing { color: var(--orange); }
  .l1-col-scroll { flex: 1; overflow-y: auto; padding: 4px; }
  .rel-row {
    background: var(--bg-mid); border-radius: 6px;
    display: flex; align-items: center; padding: 4px 8px;
    margin: 2px 0; gap: 6px;
  }
  .rel-name { font-size: 11px; font-family: 'SF Mono', monospace; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; line-height: 1.35; }
  .rel-cat-label { font-size: 12px; padding: 4px 8px 2px; margin-top: 6px; }
  .rel-cat-sublabel { font-size: 11px; padding: 2px 8px 2px 24px; margin-top: 2px; font-style: italic; color: var(--text-main); }
  .rel-none { font-size: 12px; color: var(--text-muted); padding: 8px; }
  #overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7);
    display: none; justify-content: center; align-items: center; z-index: 100;
  }
  #overlay.open { display: flex; }
  .popup {
    background: var(--bg-dark); border-radius: 10px;
    width: min(560px, 95vw); max-height: 85vh;
    display: flex; flex-direction: column; overflow: hidden;
  }
  .popup-hdr  { background: var(--bg-mid); padding: 12px 16px; flex-shrink: 0; }
  .popup-hdr .popup-title { font-size: 14px; font-weight: 700; }
  .popup-body { overflow-y: auto; padding: 0 0 8px; flex: 1; }
  .popup-sect-label { font-size: 12px; color: var(--text-dim); padding: 12px 16px 4px; }
  .popup-row  { display: grid; grid-template-columns: 140px 1fr; padding: 3px 16px; }
  .popup-lbl  { font-size: 11px; color: var(--text-dim); font-family: 'SF Mono', monospace; }
  .popup-val  { font-size: 11px; font-family: 'SF Mono', monospace; color: var(--text-main); word-break: break-word; }
  .popup-val.accent { color: var(--accent); }
  .popup-div  { height: 1px; background: var(--text-muted); margin: 6px 16px; }
  .popup-close-row { padding: 10px 16px; display: flex; justify-content: flex-end; flex-shrink: 0; }
  .popup-info-line { font-size: 12px; color: var(--text-main); padding: 4px 24px; font-family: 'SF Mono', monospace; line-height: 1.5; }
  .popup-cat-info { font-size: 14px; color: var(--text-main); padding: 8px 24px 0; line-height: 1.6; }
  ::-webkit-scrollbar { width: 6px; height: 6px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--bg-panel); border-radius: 3px; }