*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html{overflow-x:hidden}
:root{--primary:#3b1f8c;--gold:#d4ac0d;--bg:#F5F0F8;--surface:#fff;--text:#1e1a2e;--text-soft:#6a5c7a;--border:#e0d8ee;--shadow:rgba(59,31,140,.09)}
[data-theme="dark"]{--bg:#121212;--surface:#1e1e1e;--text:#e0d6e8;--text-soft:#a090b0;--border:#333}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}

/* LOBBY */
.lobby-body{background:#F5F0F8}
.lobby-hero{background:linear-gradient(160deg,#3b1f8c 0%,#21104f 55%,#130a30 100%);color:#fff;padding:2.2rem 1.25rem 1.5rem;text-align:center;position:relative;overflow:hidden}
.lobby-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 20%,rgba(212,172,13,.08),transparent 60%);pointer-events:none}
.lobby-hero-inner{position:relative;z-index:1;max-width:500px;margin:0 auto}
.lobby-basmala{font-family:'Amiri','Traditional Arabic',serif;font-size:3.6rem;color:#d4ac0d;margin-bottom:.8rem;direction:rtl;line-height:1.9}
.lobby-emblem{width:84px;height:84px;border-radius:20px;background:linear-gradient(145deg,#4a2a9c,#1e0e4c);border:2px solid rgba(212,172,13,.5);box-shadow:0 6px 28px rgba(0,0,0,.4);margin:0 auto 1rem;display:flex;align-items:center;justify-content:center}
.lobby-title{font-family:'Amiri',Georgia,serif;font-size:2.6rem;font-weight:700;color:#fff;margin:0 0 .4rem;line-height:1.2}
.lobby-subtitle{font-family:'Lora',serif;font-size:1.15rem;color:rgba(255,255,255,.75);margin:0 0 .7rem;line-height:1.6;font-style:italic}
.lobby-tagline{font-size:1.15rem;font-weight:700;color:#f4d03f;margin:0 0 1rem;letter-spacing:.01em}
.lobby-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin:.8rem 0 .5rem;border:1px solid rgba(212,172,13,.25);border-radius:12px;overflow:hidden;background:rgba(212,172,13,.06)}
.lobby-stat{padding:14px 6px;text-align:center;border-right:1px solid rgba(212,172,13,.15)}
.lobby-stat:last-child{border-right:none}
.lobby-stat-num{display:block;font-size:1.75rem;font-weight:700;color:#f4d03f}
.lobby-stat-lbl{display:block;font-size:.72rem;color:rgba(255,255,255,.65);text-transform:uppercase;letter-spacing:.07em;margin-top:2px}
.lobby-divider-ornament{margin-top:1.2rem;color:rgba(212,172,13,.4);font-size:1rem;letter-spacing:.5em}
.pwa-install-btn{display:flex;align-items:center;justify-content:center;gap:10px;max-width:560px;width:calc(100% - 30px);margin:12px auto;padding:14px 24px;border:none;border-radius:14px;cursor:pointer;background:linear-gradient(135deg,#F59E0B,#D97706);color:#fff;font-size:1rem;font-weight:700;box-shadow:0 6px 20px rgba(217,119,6,.35)}
.lobby-main{max-width:560px;margin:0 auto;padding:16px 14px 8px}
.lobby-enter-btn{display:flex;align-items:center;gap:14px;background:#fff;border-radius:16px;padding:20px 18px;text-decoration:none;color:#1e1a2e;box-shadow:0 2px 12px rgba(59,31,140,.1);position:relative;transition:transform .18s}
.lobby-enter-btn::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;border-radius:16px 16px 0 0;background:linear-gradient(90deg,#3b1f8c,#5a3ab5)}
.lobby-enter-btn:active{transform:scale(.983)}
.lobby-enter-icon{font-size:2.4rem;flex-shrink:0}
.lobby-enter-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}
.lobby-enter-title{font-family:'Amiri',serif;font-size:2rem;font-weight:700;color:#3b1f8c;line-height:1.2}
.lobby-enter-sub{font-size:.9rem;color:#6a5c7a}
.lobby-enter-arrow{font-size:2.1rem;color:#3b1f8c;opacity:.5;flex-shrink:0}
.lobby-favs-btn{width:100%;margin-top:12px;padding:16px;background:none;border:1px solid rgba(59,31,140,.25);border-radius:14px;font-size:1.1rem;font-weight:700;color:#3b1f8c;cursor:pointer}
.lobby-favs-btn:active{background:rgba(59,31,140,.05)}
.lobby-values{max-width:560px;margin:0 auto;padding:14px 14px 10px;display:flex;flex-direction:column;gap:9px;border-top:1px solid rgba(59,31,140,.08);margin-top:10px}
.lobby-value{font-size:1.1rem;color:#6a5c7a;display:flex;align-items:center;gap:8px}
.lobby-footer{background:#130a30;color:rgba(255,255,255,.5);text-align:center;padding:1.6rem 1.25rem 1.8rem;margin-top:0}
.lobby-footer-arabic{font-family:'Amiri',serif;font-size:2.25rem;color:rgba(212,172,13,.75);direction:rtl;margin-bottom:.5rem;line-height:2.1}
.lobby-footer-attr{font-family:'Lora',serif;font-size:.95rem;font-style:italic;color:rgba(212,172,13,.55);margin-bottom:.7rem;letter-spacing:.02em}
.lobby-footer-tag{font-size:.95rem;line-height:1.6;opacity:.75}
.lobby-colophon-divider{background:#130a30;text-align:center;padding:1.2rem 0 0;color:rgba(212,172,13,.45);font-size:.85rem;letter-spacing:.3em}

/* NAVIGATOR */
.lib-header{background:var(--primary);color:#fff;height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.2)}
.lib-header-btn{background:none;border:none;color:#fff;font-size:1.55rem;padding:10px;cursor:pointer}
.lib-header-title{font-weight:600;font-size:1.2rem;flex:1;text-align:center}
.lib-breadcrumb{background:var(--surface);padding:11px 14px;font-size:.95rem;color:var(--text-soft);border-bottom:1px solid var(--border);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}
.lib-search-wrap{background:var(--surface);padding:10px 14px;border-bottom:1px solid var(--border)}
#libSearchBox{width:100%;padding:12px 16px;font-size:17px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);outline:none}
#libSearchBox:focus{border-color:var(--gold)}

/* Category folder rows */
.cat-folder-row{display:flex;align-items:center;cursor:pointer;text-decoration:none;color:#fff;min-height:108px;position:relative;overflow:hidden;border-bottom:1px solid rgba(212,172,13,.18)}
.cat-folder-row::after{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,#f4d03f,#d4ac0d,#b8860b);box-shadow:2px 0 8px rgba(212,172,13,.3)}
.cat-folder-inner{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center;padding:12px 12px 12px 16px;gap:6px;position:relative;z-index:1}
.cat-folder-ar{font-family:'Scheherazade New',serif;font-size:2.6rem;font-weight:700;color:#f4d03f;direction:rtl;text-align:right;line-height:1.25;text-shadow:0 0 14px rgba(212,172,13,.35)}
.cat-folder-bottom{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.cat-folder-icon{font-size:1.4rem;flex-shrink:0}
.cat-folder-en{font-family:'DM Sans',system-ui,sans-serif;font-size:1.55rem;font-weight:900;color:#fff;flex:1;letter-spacing:-.01em}
.cat-folder-gems{font-size:.75rem;font-weight:800;color:#f4d03f;background:rgba(212,172,13,.18);border:1px solid rgba(212,172,13,.3);border-radius:20px;padding:3px 10px;letter-spacing:.05em;white-space:nowrap}
.cat-folder-subs{font-size:.72rem;color:rgba(255,255,255,.55);white-space:nowrap}
.cat-folder-arrow{font-size:1.6rem;color:rgba(244,208,63,.55);flex-shrink:0;padding:0 12px 0 4px;align-self:center}

/* Sub-topic list */
.st-section-hdr{padding:11px 14px 6px;background:var(--bg);font-size:.78rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:var(--primary);border-bottom:1px solid var(--border)}
.st-item{background:var(--surface);border-bottom:1px solid var(--border);padding:17px 14px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;text-decoration:none;color:var(--text);transition:background .15s}
.st-item:active,.st-item:hover{background:var(--border)}
.st-item-left{display:flex;align-items:flex-start;gap:11px;flex:1;min-width:0}
.st-item-icon{font-size:1.35rem;flex-shrink:0;margin-top:2px}
.st-item-title{font-weight:700;font-size:1.35rem;line-height:1.35;color:var(--text)}
.st-item-count{font-size:.78rem;color:var(--text-soft);margin-top:4px}
.st-item-arrow{font-size:1.3rem;opacity:.4;flex-shrink:0;margin-left:10px}

/* Favs */
.fav-gem-item{flex-direction:column;align-items:flex-start;gap:6px;cursor:pointer}
mark{background:rgba(212,172,13,.35);color:inherit;padding:0 2px;border-radius:2px}
.fab-back{position:fixed;bottom:22px;right:22px;width:52px;height:52px;background:var(--primary);color:#fff;border-radius:50%;display:none;align-items:center;justify-content:center;box-shadow:0 4px 15px rgba(0,0,0,.28);z-index:2000;font-size:1.5rem;border:none;cursor:pointer}
.slide-in{animation:slideIn .2s cubic-bezier(.25,1,.5,1) forwards}
@keyframes slideIn{from{opacity:0;transform:translateX(10px)}to{opacity:1;transform:translateX(0)}}
.no-results{padding:40px 20px;text-align:center;color:var(--text-soft);font-style:italic}

@media(max-width:480px){
  .lobby-basmala{font-size:2.9rem}
  .lobby-title{font-size:2.2rem}
  .lobby-stats{grid-template-columns:repeat(2,1fr)}
  .lobby-stat:nth-child(2){border-right:none}
  .lobby-stat:nth-child(-n+2){border-bottom:1px solid rgba(212,172,13,.15)}
}