:root{
  --color-background-primary:#FFFFFF;
  --color-background-secondary:#F7F7F4;
  --color-background-tertiary:#EFEFEA;
  --color-border-secondary:#D8D8D2;
  --color-border-tertiary:#E4E4DE;
  --color-text-primary:#1F1F1D;
  --color-text-secondary:#5B5B55;
  --color-text-tertiary:#8A8A82;
  --border-radius-md:10px;
  --border-radius-lg:14px;
  --border-radius-xl:18px;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --f:'Noto Naskh Arabic',var(--font-sans),Tahoma,sans-serif;
  --pur:#58A700;--pur-l:#EAF8D8;--pur-d:#3C8C0A;
  --grn:#085041;--grn-l:#E1F5EE;
  --amb:#633806;--amb-l:#FEF3E8;
  --gold:#8B6000;--gold-l:#FFF8E8;
  --ice:#185FA5;--ice-l:#E6F1FB;
  --tafsir:#185FA5;--tafsir-l:#E6F1FB;
  --fs-scale:1;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--color-background-tertiary);color:var(--color-text-primary);font-family:var(--f)}
a{color:inherit;text-decoration:none}
button{font-family:var(--f);cursor:pointer}
img{max-width:100%}

/* ---------- top nav (shared) ---------- */
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border-tertiary)}
.site-header-inner{max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px 28px}
.site-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--grn-d,var(--pur-d))}
.site-logo img{width:32px;height:32px;border-radius:8px}
.site-nav{display:flex;align-items:center;gap:28px}
.site-nav a{font-size:15px;color:var(--color-text-secondary);font-weight:600}
.site-nav a:hover{color:var(--color-text-primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:var(--border-radius-md);font-weight:700;font-size:15px;border:none;transition:transform .15s ease,box-shadow .15s ease}
.btn-primary{background:var(--pur-d);color:#fff;box-shadow:0 2px 8px rgba(60,140,10,.25)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(60,140,10,.32)}
.btn-ghost{background:transparent;color:var(--color-text-primary);border:1px solid var(--color-border-secondary)}
.btn-ghost:hover{background:var(--color-background-secondary)}

/* ---------- landing hero ---------- */
.hero{max-width:1120px;margin:0 auto;padding:80px 28px 60px;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1{font-size:44px;line-height:1.35;margin:0 0 20px;font-weight:700}
.hero h1 span{color:var(--pur-d)}
.hero p{font-size:18px;line-height:1.9;color:var(--color-text-secondary);margin:0 0 28px}
.hero-actions{display:flex;gap:14px}
.hero-visual{background:linear-gradient(160deg,var(--pur-l),var(--ice-l));border-radius:24px;padding:36px;border:1px solid var(--color-border-tertiary);min-height:320px;display:flex;align-items:center;justify-content:center}
.hero-verse{font-size:26px;line-height:2.3;text-align:center;color:var(--pur-d);font-weight:600}
.hero-verse small{display:block;font-size:14px;color:var(--color-text-tertiary);margin-top:16px;font-weight:400}

.section{max-width:1120px;margin:0 auto;padding:60px 28px}
.section-title{font-size:30px;font-weight:700;margin:0 0 10px;text-align:center}
.section-sub{font-size:16px;color:var(--color-text-secondary);text-align:center;max-width:640px;margin:0 auto 40px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--color-background-primary);border:1px solid var(--color-border-tertiary);border-radius:var(--border-radius-xl);padding:28px}
.feature-card .ic{font-size:28px;margin-bottom:14px}
.feature-card h3{margin:0 0 8px;font-size:18px}
.feature-card p{margin:0;font-size:14.5px;line-height:1.85;color:var(--color-text-secondary)}

.cta-band{background:var(--grn);color:#fff;border-radius:24px;max-width:1120px;margin:0 auto 80px;padding:52px 40px;text-align:center}
.cta-band h2{font-size:28px;margin:0 0 12px}
.cta-band p{opacity:.9;margin:0 0 26px;font-size:16px}
.cta-band .btn-primary{background:#fff;color:var(--grn)}

.site-footer{border-top:1px solid var(--color-border-tertiary);padding:30px 28px;text-align:center;color:var(--color-text-tertiary);font-size:13px}

@media (max-width:860px){
  .hero{grid-template-columns:1fr;padding-top:40px}
  .feature-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
}

/* ---------- reader app ---------- */
.app-shell{display:grid;grid-template-columns:280px 1fr;min-height:calc(100vh - 61px)}
.app-sidebar{border-inline-end:1px solid var(--color-border-tertiary);background:var(--color-background-primary);padding:20px 14px;overflow-y:auto}
.book-group{margin-bottom:6px}
.book-title{font-size:13px;font-weight:700;color:var(--color-text-tertiary);padding:10px 10px 6px;text-transform:uppercase;letter-spacing:.02em}
.story-link{display:block;padding:9px 12px;border-radius:var(--border-radius-md);font-size:14.5px;color:var(--color-text-primary);cursor:pointer}
.story-link:hover{background:var(--color-background-secondary)}
.story-link.active{background:var(--pur-l);color:var(--pur-d);font-weight:700}
.story-empty{padding:8px 12px;font-size:13px;color:var(--color-text-tertiary)}

.app-main{padding:32px 40px;max-width:820px;width:100%;margin:0 auto}
.story-header{margin-bottom:24px}
.story-header h1{margin:0 0 6px;font-size:26px}
.story-header .meta{color:var(--color-text-tertiary);font-size:13.5px}

.vcard{background:var(--color-background-primary);border:1px solid var(--color-border-tertiary);border-radius:var(--border-radius-lg);padding:22px 26px;margin-bottom:16px;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.vcard.studied{border-inline-start:3px solid var(--pur-d)}
.vtext{font-size:calc(22px * var(--fs-scale));line-height:2.5;text-align:center;white-space:pre-line;font-weight:500}
.vnum{display:inline-block;background:var(--color-background-secondary);color:var(--color-text-tertiary);font-size:12px;border-radius:20px;padding:2px 10px;margin-bottom:12px}
.vmean{margin-top:14px;padding:12px 16px;background:var(--color-background-secondary);border-radius:var(--border-radius-lg);font-size:15px;line-height:1.9;color:var(--color-text-secondary)}
.vtafsir{margin-top:10px;padding:12px 16px;background:var(--tafsir-l);color:var(--tafsir);border-radius:var(--border-radius-lg);font-size:14px;line-height:1.9}
.vfoot{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-top:12px}
.mark-btn{border:1px solid var(--color-border-secondary);background:transparent;border-radius:var(--border-radius-md);padding:6px 14px;font-size:13px;color:var(--color-text-secondary)}
.mark-btn.on{background:var(--pur-l);border-color:var(--pur-d);color:var(--pur-d);font-weight:700}
.vsource{margin-top:10px;padding:10px 14px;background:var(--grn-l);color:var(--grn);border-radius:var(--border-radius-lg);font-size:13.5px;line-height:1.9}
.vsource-ar{font-family:var(--f);font-size:15px}
.vrefl{margin-top:10px;padding:10px 14px;background:var(--amb-l);color:var(--amb);border-radius:var(--border-radius-lg);font-size:13.5px;line-height:1.9}
.breadcrumb a{color:var(--color-text-tertiary)}
.breadcrumb a:hover{color:var(--pur-d)}
.lang-switch{margin-inline-start:6px;padding-inline-start:16px;border-inline-start:1px solid var(--color-border-secondary)}
.lang-switch a{font-weight:700;color:var(--pur-d)}

/* ---------- copy protection: only .allow-copy is selectable ---------- */
body{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
input,textarea{-webkit-user-select:text;user-select:text}
.allow-copy,.allow-copy *{-webkit-user-select:text!important;user-select:text!important;-webkit-touch-callout:default!important}

/* ---------- locked content skeleton ---------- */
.vlock{margin-top:10px;padding:14px 16px;background:var(--color-background-secondary);border:1px dashed var(--color-border-secondary);border-radius:var(--border-radius-lg)}
.vlock-row{height:11px;border-radius:6px;margin-bottom:8px;background:linear-gradient(90deg,var(--color-border-tertiary) 25%,var(--color-border-secondary) 37%,var(--color-border-tertiary) 63%);background-size:400% 100%;animation:vlockShimmer 1.6s ease-in-out infinite}
.vlock-row:last-of-type{margin-bottom:14px}
@keyframes vlockShimmer{0%{background-position:100% 0}100%{background-position:0 0}}
.vlock-cta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--color-text-tertiary);flex-wrap:wrap}
.vlock-ic{font-size:14px;opacity:.7;font-style:normal}
.vlock-btn{margin-inline-start:auto;border:1px solid var(--pur-d);background:transparent;color:var(--pur-d);font-weight:700;font-size:12.5px;padding:6px 12px;border-radius:var(--border-radius-md)}
.vlock-btn:hover{background:var(--pur-l)}

.lang-toggle{display:flex;border:1px solid var(--color-border-secondary);border-radius:var(--border-radius-md);overflow:hidden}
.lang-toggle button{border:none;background:transparent;padding:7px 14px;font-size:13px;color:var(--color-text-secondary)}
.lang-toggle button.on{background:var(--pur-d);color:#fff}

.topbar-app{display:flex;align-items:center;justify-content:space-between;padding:12px 28px;border-bottom:1px solid var(--color-border-tertiary);background:var(--color-background-primary)}
.acct-pill{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--color-text-secondary)}
.acct-pill button{border:none;background:transparent;color:var(--pur-d);font-weight:700;font-size:13.5px}

/* auth overlay */
.auth-overlay{position:fixed;inset:0;background:rgba(20,20,18,.5);display:flex;align-items:center;justify-content:center;z-index:100}
.auth-card{background:#fff;border-radius:var(--border-radius-xl);padding:32px;width:100%;max-width:380px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.auth-card h2{margin:0 0 4px;font-size:20px;text-align:center}
.auth-card .sub{text-align:center;color:var(--color-text-tertiary);font-size:13.5px;margin-bottom:20px}
.auth-tabs{display:flex;background:var(--color-background-secondary);border-radius:var(--border-radius-md);padding:3px;margin-bottom:18px}
.auth-tabs button{flex:1;border:none;background:transparent;padding:8px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--color-text-secondary)}
.auth-tabs button.on{background:#fff;color:var(--pur-d);box-shadow:0 1px 3px rgba(0,0,0,.1)}
.auth-input{width:100%;padding:11px 14px;border:1px solid var(--color-border-secondary);border-radius:var(--border-radius-md);font-size:14px;margin-bottom:10px;direction:ltr;text-align:center;font-family:var(--font-sans)}
.auth-err{color:#c0392b;font-size:13px;text-align:center;min-height:18px;margin-top:2px}
.auth-divider{text-align:center;color:var(--color-text-tertiary);font-size:12px;margin:14px 0}
.auth-oauth{width:100%;padding:10px;border:1px solid var(--color-border-secondary);border-radius:var(--border-radius-md);background:#fff;font-size:14px;margin-bottom:8px}
.auth-forgot{text-align:center;margin-top:6px;font-size:12.5px;color:var(--pur-d);cursor:pointer}

.loading-note{text-align:center;color:var(--color-text-tertiary);padding:60px 20px;font-size:15px}