:root{
  --red:#E5433A; --red-dark:#C42F27; --teal:#06807F; --teal-deep:#0A3538;
  --ink:#0E2224; --cream:#FAF6F1; --paper:#FFFFFF; --line: rgba(14,34,36,0.10);
  --shadow-sm: 0 8px 24px -10px rgba(10,53,56,0.16);
  --radius:16px;
  --disp:'Cairo','Segoe UI',sans-serif; --body:'Almarai','Segoe UI',sans-serif;
  /* legacy variable names kept for anything referencing them */
  --ink-2:var(--teal); --gold:var(--red); --gold-light:rgba(229,67,58,0.1);
  --bg:var(--cream); --surface:var(--paper); --text:var(--ink); --text-2:#4a5f60;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
a{color:inherit; text-decoration:none;}
body{background:var(--bg);color:var(--text);font-family:var(--body);overflow-x:hidden;-webkit-tap-highlight-color:transparent;}
h1,h2,h3,.display{font-family:var(--disp);}
button{font-family:inherit;cursor:pointer;}
img{max-width:100%;}

header.top{background:rgba(250,246,241,0.92);backdrop-filter:blur(10px);color:var(--text);padding:16px 0;position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);}
.top-row{display:flex;align-items:center;justify-content:space-between;gap:14px;max-width:1100px;margin:0 auto;padding:0 24px;}
.brand-link{display:flex;align-items:center;gap:10px;}
.logo-badge{width:40px;height:40px;border-radius:10px;background:var(--paper);display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-size:18px;font-weight:800;color:var(--red);flex-shrink:0;overflow:hidden;}
.logo-badge img{width:100%;height:100%;object-fit:contain;}
.school-name{font-size:16px;font-weight:800;font-family:var(--disp);color:var(--teal-deep);white-space:nowrap;}
.top-nav{display:flex;align-items:center;gap:12px;}
.header-actions{display:flex;gap:8px;align-items:center;flex-shrink:0;}
.home-link{display:inline-flex;align-items:center;gap:6px;font-family:var(--disp);font-weight:700;font-size:14.5px;color:var(--teal-deep);}
.home-link:hover{color:var(--red);}
.ghost-btn{background:var(--paper);border:1px solid var(--line);color:var(--teal-deep);border-radius:100px;padding:8px 14px;font-size:13.5px;font-weight:700;font-family:var(--disp);white-space:nowrap;text-decoration:none;display:inline-block;}
.user-chip{display:flex;align-items:center;gap:6px;font-size:13px;font-family:var(--disp);color:var(--text-2);}

.lib-hero{background:var(--paper);border-bottom:1px solid var(--line);padding:56px 0 44px;text-align:center;}
.lib-hero-inner{max-width:640px;margin:0 auto;padding:0 24px;}
.lib-hero h1{font-size:clamp(26px,3.6vw,36px);font-weight:800;color:var(--teal-deep);margin:0 0 14px;}
.lib-hero p{font-size:15.5px;line-height:1.9;color:var(--text-2);margin:0 0 26px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--disp);font-weight:700;font-size:13px;color:var(--red);background:rgba(229,67,58,0.08);padding:7px 16px;border-radius:100px;margin-bottom:16px;}
.eyebrow::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--red);}
.search-wrap{position:relative;width:100%;}
.search-wrap input{width:100%;padding:16px 50px 16px 20px;border-radius:999px;border:1px solid var(--line);font-family:var(--body);font-size:15.5px;background:var(--cream);box-shadow:var(--shadow-sm);}
.search-wrap input:focus{outline:2px solid var(--red);background:var(--paper);}
.search-icon{position:absolute;right:22px;top:50%;transform:translateY(-50%);color:var(--teal);font-size:17px;}
.crumbs{max-width:980px;margin:16px auto 0;padding:0 20px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:13px;color:var(--text-2);}
.crumbs button{background:none;border:none;color:var(--teal);font-weight:700;font-size:13px;padding:4px 2px;font-family:var(--body);}
.crumbs button:hover{text-decoration:underline;}
.crumbs .sep{color:var(--red);}
main{max-width:980px;margin:0 auto;padding:22px 20px 70px;}
.section-title{font-size:clamp(24px,3.4vw,30px);margin:6px 0 4px;color:var(--teal-deep);font-weight:800;}
.section-sub{color:var(--text-2);font-size:14.5px;margin:0 0 24px;line-height:1.8;}
.divider{display:flex;align-items:center;gap:10px;margin:26px 0;}
.divider .line{flex:1;height:1px;background:var(--line);}
.divider .dot{width:6px;height:6px;background:var(--red);transform:rotate(45deg);}
.hero-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media(min-width:700px){.hero-grid{grid-template-columns:repeat(3,1fr);}}

.book-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--line);padding:24px 20px;position:relative;overflow:hidden;display:flex;flex-direction:column;gap:9px;text-align:right;min-height:150px;transition:transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s;}
.book-card::before{content:"";position:absolute;top:0;bottom:0;right:0;width:5px;background:var(--spine,var(--red));}
.book-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-sm);}
.book-card:active{transform:scale(.98);}
.book-card .icon{font-size:26px;}
.book-card h3{margin:2px 0 0;font-size:20px;color:var(--teal-deep);font-family:var(--disp);}
.book-card p{margin:0;font-size:13.5px;color:var(--text-2);line-height:1.7;}

.choice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
@media(min-width:560px){.choice-grid{grid-template-columns:repeat(3,1fr);}}
.choice-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 14px;text-align:center;font-weight:800;font-family:var(--disp);font-size:15px;color:var(--teal-deep);transition:transform .2s, box-shadow .2s;}
.choice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);}
.choice-card:active{background:rgba(229,67,58,0.06);}
.choice-card .n{display:block;font-size:12px;font-weight:400;font-family:var(--body);color:var(--red);margin-bottom:4px;}
.choice-card .count{display:block;font-size:11.5px;font-weight:400;font-family:var(--body);color:var(--text-2);margin-top:4px;}

.list-row{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px;transition:box-shadow .2s;}
.list-row:hover{box-shadow:var(--shadow-sm);}
.list-row .thumb{width:44px;height:44px;border-radius:12px;background:rgba(6,128,127,0.1);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
.list-row .info{flex:1;min-width:0;}
.list-row .info strong{display:block;font-size:15px;font-family:var(--disp);color:var(--ink);}
.list-row .info span{font-size:12.5px;color:var(--text-2);}
.list-row .actions{display:flex;gap:6px;flex-shrink:0;}

.btn{border:1px solid var(--line);background:var(--surface);border-radius:100px;padding:10px 18px;font-size:13.5px;font-weight:700;font-family:var(--disp);color:var(--teal-deep);transition:transform .2s, box-shadow .2s;}
.btn:hover{transform:translateY(-2px);}
.btn.primary{background:var(--teal-deep);color:#fff;border-color:var(--teal-deep);}
.btn.gold{background:var(--red);color:#fff;border-color:var(--red);box-shadow:0 12px 26px -10px rgba(229,67,58,.5);}
.btn.small{padding:8px 12px;font-size:12.5px;}

.download-all{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:10px;}
.viewer{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.viewer-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;background:var(--teal-deep);color:#fff;padding:12px 14px;}
.viewer-toolbar .tools{display:flex;gap:6px;}
.viewer-toolbar button{background:rgba(255,255,255,.14);border:none;color:#fff;border-radius:10px;width:34px;height:34px;font-size:15px;}
.audio-row{display:flex;align-items:center;gap:12px;}
.empty{text-align:center;padding:56px 20px;color:var(--text-2);}
.admin-note{background:rgba(229,67,58,0.06);border:1px solid rgba(229,67,58,0.2);color:#8a3630;padding:13px 16px;border-radius:12px;font-size:13px;margin-bottom:18px;line-height:1.8;}
.admin-row{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin-bottom:8px;}
.admin-row input{flex:1;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-family:inherit;font-size:14px;}
.admin-add{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap;}
.admin-add input{flex:1;min-width:140px;border:1px solid var(--line);border-radius:8px;padding:9px 10px;font-family:inherit;font-size:14px;}
.admin-context{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px;}
.admin-context select{border:1px solid var(--line);border-radius:8px;padding:9px 10px;font-family:inherit;font-size:14px;background:#fff;flex:1;min-width:160px;}
.admin-section{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:22px;}
.admin-tabs{display:flex;gap:6px;margin-bottom:18px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:100px;padding:5px;}
.admin-tabs button{flex:1;min-width:110px;background:none;border:none;padding:10px 8px;border-radius:100px;font-weight:700;font-family:var(--disp);font-size:13px;color:var(--text-2);}
.admin-tabs button.active{background:var(--teal-deep);color:#fff;}
.home-card-icon-input{width:60px !important;flex:0 0 60px !important;text-align:center;}
.auth-card{max-width:380px;margin:40px auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;}
.field{margin-bottom:12px;}
.field label{display:block;font-size:13px;font-weight:700;color:var(--text-2);margin-bottom:5px;}
.field input{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-family:inherit;font-size:14px;}
.auth-error{color:#a32d2d;font-size:13px;margin-bottom:10px;}
.auth-submit{width:100%;margin-top:6px;padding:12px;}
footer{text-align:center;color:var(--text-2);font-size:12.5px;padding:22px;}
.nav-bottom{display:flex;justify-content:flex-end;margin-top:18px;}

@media(max-width:620px){
  .school-name{font-size:14px;}
  .logo-badge{width:34px;height:34px;}
  .lib-hero{padding:40px 0 32px;}
  .top-row{padding:0 18px;}
}
@media(max-width:420px){
  .school-name{display:none;}
}