/* ============ Design tokens ============ */
:root, html[data-theme="dark"]{
  --gold:#c9a86a;
  --gold-soft:#dcc48f;
  --dark:#0b0b0c;
  --dark-2:#141412;
  --secondary:#7a5230;
  --accent:#3f8f7d;
  --danger:#ff5252;
  --success:#00c896;
  --bg:#0b0b0c;
  --surface:rgba(255,255,255,0.03);
  --surface-strong:rgba(255,255,255,0.06);
  --border:rgba(201,168,106,0.16);
  --text:#ece7db;
  --text-dim:rgba(236,231,219,0.68);
  --text-faint:rgba(236,231,219,0.42);
  --shadow: 0 20px 50px rgba(0,0,0,0.5);
}
html[data-theme="light"]{
  --bg:#ffffff;
  --surface:rgba(201,168,106,0.07);
  --surface-strong:rgba(201,168,106,0.14);
  --border:rgba(201,168,106,0.35);
  --text:#1a1a1a;
  --text-dim:rgba(26,26,26,0.7);
  --text-faint:rgba(26,26,26,0.48);
  --shadow: 0 20px 50px rgba(26,26,26,0.1);
}
html[data-theme="light"] .btn-outline{color:#8a6a30;border-color:#8a6a30;}
html[data-theme="light"] .btn-outline:hover{background:#8a6a30;color:#fff;}
html[data-theme="light"] .icon-btn:hover{color:#8a6a30;border-color:#8a6a30;}
html[data-theme="light"] .search-result-item .sr-chapter{color:#8a6a30;}
html[data-theme="light"] .section-lbl i{color:#8a6a30;}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'Tajawal',sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  transition:background .35s ease, color .35s ease;
}
a{color:inherit;}
button{font-family:inherit;cursor:pointer;}
input, select, textarea{font-family:inherit;}

.geo-bg{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden;}
.geo-shape{position:absolute;opacity:0.07;animation:float 22s infinite ease-in-out;}
.geo-circle{border-radius:50%;border:3px solid var(--gold);}
.geo-square{border:3px solid var(--accent);transform:rotate(45deg);}
.geo-triangle{width:0;height:0;border-left:60px solid transparent;border-right:60px solid transparent;border-bottom:100px solid var(--secondary);}
@keyframes float{0%,100%{transform:translateY(0) rotate(0deg);}50%{transform:translateY(-30px) rotate(180deg);}}
@keyframes shine{0%{transform:translateX(-100%);}100%{transform:translateX(100%);}}
@keyframes spin{to{transform:rotate(360deg);}}

.topbar{
  position:sticky;top:0;z-index:1000;
  display:flex;align-items:center;gap:16px;
  padding:14px 26px;
  background:var(--bg);
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(12px);
  border-bottom:2px solid var(--gold);
}
.topbar .brand{
  display:flex;align-items:center;gap:10px;
  font-weight:800;font-size:1.05rem;color:var(--gold);
  white-space:nowrap;
}
.topbar .brand i{font-size:1.2rem;}
.topbar .brand img.brand-logo{height:30px;width:auto;display:block;}
.topbar .spacer{flex:1;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--border);
  color:var(--text);font-size:1.05rem;
  transition:all .25s;
}
.icon-btn:hover{background:var(--surface-strong);border-color:var(--gold);color:var(--gold);}
.user-chip{
  display:flex;align-items:center;gap:10px;
  background:var(--surface);border:1px solid var(--border);
  padding:6px 14px 6px 6px;border-radius:30px;
}
.user-chip .avatar{
  width:30px;height:30px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold),var(--secondary));
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:var(--dark);font-size:0.85rem;
}
.user-chip .uname{font-size:0.88rem;font-weight:700;}
.logout-link{color:var(--text-faint);font-size:0.85rem;text-decoration:none;margin-inline-start:4px;}
.logout-link:hover{color:var(--danger);}

.search-wrap{position:relative;flex:1;max-width:420px;}
.search-wrap i.fa-magnifying-glass{
  position:absolute;top:50%;right:16px;transform:translateY(-50%);
  color:var(--text-faint);font-size:0.9rem;pointer-events:none;
}
.search-input{
  width:100%;padding:11px 44px 11px 16px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:30px;color:var(--text);font-size:0.9rem;
  outline:none;transition:all .25s;
}
.search-input:focus{border-color:var(--gold);background:var(--surface-strong);}
.search-results{
  position:absolute;top:calc(100% + 10px);right:0;left:0;
  background:var(--dark-2, var(--surface-strong));
  background:var(--bg);
  border:1px solid var(--border);border-radius:16px;
  box-shadow:var(--shadow);
  max-height:420px;overflow-y:auto;
  z-index:1500;display:none;
}
.search-results.show{display:block;}
.search-result-item{
  display:block;padding:14px 18px;text-decoration:none;color:var(--text);
  border-bottom:1px solid var(--border);
}
.search-result-item:last-child{border-bottom:none;}
.search-result-item:hover{background:var(--surface);}
.search-result-item .sr-chapter{font-size:0.72rem;color:var(--gold);font-weight:700;margin-bottom:4px;}
.search-result-item .sr-title{font-weight:700;margin-bottom:4px;}
.search-result-item .sr-snippet{font-size:0.8rem;color:var(--text-faint);line-height:1.5;}
.search-empty{padding:24px;text-align:center;color:var(--text-faint);font-size:0.88rem;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:14px;border:none;
  font-weight:800;font-size:0.95rem;
  transition:all .25s; text-decoration:none;
}
.btn-primary{background:linear-gradient(135deg,var(--gold),var(--secondary));color:var(--dark);position:relative;overflow:hidden;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(201,168,106,0.25);}
.btn-primary::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 40%,rgba(255,255,255,0.25) 50%,transparent 60%);
  transform:translateX(-120%);
}
.btn-primary:hover::after{transform:translateX(120%);transition:transform .7s ease;}
.btn-outline{background:transparent;border:2px solid var(--gold);color:var(--gold);}
.btn-outline:hover{background:var(--gold);color:var(--dark);}
.btn-ghost{background:var(--surface);color:var(--text);border:1px solid var(--border);}
.btn-ghost:hover{background:var(--surface-strong);}
.btn-disabled, .btn:disabled{opacity:0.4;pointer-events:none;}
.btn-block{width:100%;}
.btn-sm{padding:9px 16px;font-size:0.82rem;border-radius:10px;}

html[data-theme="light"] .theme-dark-only{display:none;}
html[data-theme="dark"] .theme-light-only{display:none;}
:root:not([data-theme]) .theme-light-only{display:none;}

.surface-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:20px;backdrop-filter:blur(10px);
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.surface-card:hover{
  transform:translateY(-4px);
  border-color:rgba(201,168,106,0.4);
  box-shadow:0 16px 36px rgba(0,0,0,0.45);
}

@keyframes fadeInUp{
  from{opacity:0;transform:translateY(16px);}
  to{opacity:1;transform:translateY(0);}
}
@keyframes fadeInDown{
  from{opacity:0;transform:translateY(-12px);}
  to{opacity:1;transform:translateY(0);}
}
.topbar{animation:fadeInDown .5s ease both;}
.hero, .container, .auth-card, .auth-page{animation:fadeInUp .6s ease both;}
.grid > *, .chapters-grid > *, #chaptersGrid > *{
  animation:fadeInUp .55s ease both;
}
#chaptersGrid > *:nth-child(1){animation-delay:.03s;}
#chaptersGrid > *:nth-child(2){animation-delay:.07s;}
#chaptersGrid > *:nth-child(3){animation-delay:.11s;}
#chaptersGrid > *:nth-child(4){animation-delay:.15s;}
#chaptersGrid > *:nth-child(5){animation-delay:.19s;}
#chaptersGrid > *:nth-child(6){animation-delay:.23s;}
#chaptersGrid > *:nth-child(7){animation-delay:.27s;}
#chaptersGrid > *:nth-child(8){animation-delay:.31s;}
#chaptersGrid > *:nth-child(9){animation-delay:.35s;}

.icon-btn, .user-chip, .search-input{transition:all .25s ease;}
.icon-btn:hover{transform:translateY(-2px);}

.overall-ring{position:relative;transition:box-shadow .3s ease;}
.overall-ring:hover{box-shadow:0 0 0 6px rgba(201,168,106,0.12);}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;}
}


.progress-track{
  width:100%;height:8px;border-radius:10px;
  background:var(--surface-strong);overflow:hidden;
}
.progress-fill{
  height:100%;border-radius:10px;
  background:linear-gradient(90deg,var(--gold),var(--secondary));
  transition:width .5s ease;
}

.toast{
  position:fixed;bottom:26px;right:26px;z-index:5000;
  background:var(--dark);color:var(--text);border:1px solid var(--gold);
  padding:14px 22px;border-radius:12px;font-size:0.88rem;font-weight:700;
  box-shadow:var(--shadow);
  transform:translateY(20px);opacity:0;pointer-events:none;
  transition:all .3s ease;
}
.toast.show{transform:translateY(0);opacity:1;}

::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px;}
::-webkit-scrollbar-thumb:hover{background:var(--gold);}

@media (max-width:640px){
  .topbar{padding:12px 14px;gap:10px;}
  .topbar .brand span.full{display:none;}
  .search-wrap{max-width:none;}
}