style.css

:root {
  --primary:#6c5ce7;--primary-dark:#5a4bd1;--primary-light:#a29bfe;
  --secondary:#00cec9;--accent:#fdcb6e;
  --success:#00b894;--danger:#ff6b6b;--warning:#fdcb6e;
  --dark:#1a1a2e;--darker:#0f0f23;--light:#f0eeff;--light-gray:#d0cee0;
  --bg:#f8f7ff;--bg-section:#f0eeff;--bg-card:#fff;
  --text:#1a1a2e;--text-light:#6a6a8a;
  --shadow:0 10px 40px rgba(108,92,231,.12);--shadow-hover:0 20px 60px rgba(108,92,231,.2);
  --radius:16px;--radius-sm:10px;--radius-lg:24px;
  --transition:all .3s cubic-bezier(.4,0,.2,1);
  --font:'Cairo','Tajawal',sans-serif;
}
[data-theme="dark"] {
  --bg:#0f0f23;--bg-section:#1a1a2e;--bg-card:#16213e;
  --text:#e0e0f0;--text-light:#8a8aaa;--light:#1a1a2e;--light-gray:#2a2a4a;
  --shadow:0 10px 40px rgba(0,0,0,.5);--shadow-hover:0 20px 60px rgba(0,0,0,.7);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--font);background:var(--bg);color:var(--text);transition:var(--transition);overflow-x:hidden;line-height:1.7;min-height:100vh;display:flex;flex-direction:column}
a{text-decoration:none;color:var(--primary);transition:var(--transition)}
a:hover{color:var(--primary-dark)}
::selection{background:var(--primary);color:#fff}
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--light)}
::-webkit-scrollbar-thumb{background:var(--primary-light);border-radius:10px}
.text-gradient{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.text-gradient-light{background:linear-gradient(135deg,#fff,rgba(255,255,255,.7));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.fw500{font-weight:500}

/* Navbar */
.navbar{background:linear-gradient(135deg,var(--darker),var(--dark))!important;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.navbar-brand{font-weight:800;font-size:1.3rem;display:flex;align-items:center;gap:10px}
.navbar-brand i{color:var(--accent);font-size:1.5rem}
.nav-link{font-weight:500;padding:8px 16px!important;border-radius:var(--radius-sm);transition:var(--transition)}
.nav-link i{margin-left:6px}
.nav-link:hover,.nav-link.active{background:rgba(255,255,255,.08);color:var(--accent)!important}
.theme-btn{width:42px;height:42px;display:flex;align-items:center;justify-content:center;border:2px solid rgba(255,255,255,.2)!important;transition:var(--transition)}
.theme-btn:hover{border-color:var(--accent)!important;color:var(--accent)!important;transform:rotate(45deg)}

/* Hero */
.hero-section{position:relative;min-height:90vh;background:linear-gradient(135deg,var(--darker) 0%,var(--dark) 50%,#2a1a5e 100%);overflow:hidden;display:flex;align-items:center;padding-top:80px}
.hero-section::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 70% 30%,rgba(108,92,231,.12) 0%,transparent 60%),radial-gradient(circle at 30% 80%,rgba(0,206,201,.08) 0%,transparent 50%);animation:heroPulse 6s ease-in-out infinite alternate}
@keyframes heroPulse{0%{opacity:.5}100%{opacity:1}}
.hero-content{position:relative;z-index:2}
.hero-badge{display:inline-block;background:rgba(108,92,231,.15);backdrop-filter:blur(10px);padding:8px 24px;border-radius:50px;color:var(--primary-light);font-weight:500;margin-bottom:18px;border:1px solid rgba(108,92,231,.25)}
.hero-title{font-size:3.2rem;font-weight:800;color:#fff;line-height:1.1;margin-bottom:15px}
.hero-desc{font-size:1.05rem;color:rgba(255,255,255,.65);max-width:500px;line-height:1.8}
.hero-wave{position:absolute;bottom:-1px;left:0;width:100%;color:var(--bg);line-height:0}
.hero-wave svg{width:100%;height:60px}

/* Reader Device Visual */
.reader-device{position:relative;display:inline-block}
.rd-frame{width:260px;height:380px;background:#0f0f23;border-radius:24px;padding:12px;box-shadow:0 20px 80px rgba(0,0,0,.5);border:2px solid rgba(108,92,231,.3);animation:floatDevice 6s ease-in-out infinite;position:relative}
@keyframes floatDevice{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.rd-screen{height:100%;background:linear-gradient(180deg,#f8f7ff,#e8e5f5);border-radius:14px;padding:15px;display:flex;flex-direction:column}
.rd-header{display:flex;justify-content:space-between;color:var(--text);font-size:.75rem;font-weight:600;margin-bottom:12px;opacity:.6}
.rd-content{flex:1;display:flex;flex-direction:column;gap:10px;justify-content:center}
.rd-line{height:8px;background:rgba(108,92,231,.15);border-radius:5px;animation:rdLineAnim 3s ease-in-out infinite alternate}
@keyframes rdLineAnim{0%{opacity:.3}100%{opacity:.8}}
.rd-footer{display:flex;justify-content:space-between;margin-top:12px;font-size:.75rem;color:var(--text);opacity:.5}
.rd-floating{position:absolute;width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.08);backdrop-filter:blur(5px);border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;animation:floatIcon 4s ease-in-out infinite}
.rd-floating.f1{top:-10px;right:-20px;animation-delay:0s;color:#ff6b6b}
.rd-floating.f2{bottom:50px;left:-25px;animation-delay:1s;color:var(--secondary)}
.rd-floating.f3{top:50%;right:-22px;animation-delay:2s;color:var(--accent)}
@keyframes floatIcon{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* Quick Stats */
.quick-stats{padding:30px 0;background:var(--bg-card);border-bottom:1px solid var(--light-gray)}
.qs-item{text-align:center}
.qs-item i{font-size:1.5rem;color:var(--primary);display:block;margin-bottom:5px}
.qs-item .qs-num{display:block;font-size:1.5rem;font-weight:800}
.qs-item small{font-size:.75rem;color:var(--text-light)}

/* Sections */
.section-header{text-align:center;margin-bottom:35px}
.section-badge{display:inline-block;background:var(--primary);color:#fff;padding:6px 20px;border-radius:50px;font-size:.85rem;font-weight:500;margin-bottom:12px}
.section-header h2{font-size:2rem;font-weight:800}
.section-header p{color:var(--text-light)}
.library-section{padding:60px 0;background:var(--bg-section)}
.reader-section{padding:60px 0;background:var(--bg)}
.bookmarks-section{padding:60px 0;background:var(--bg-section)}

/* Library */
.library-upload .upload-area{border:3px dashed var(--light-gray);border-radius:var(--radius);padding:30px;text-align:center;cursor:pointer;transition:var(--transition)}
.upload-area:hover{border-color:var(--primary);background:rgba(108,92,231,.03)}
.upload-area i{font-size:2.5rem;color:var(--primary);margin-bottom:10px}
.upload-area h5{font-weight:700}
.upload-area p{font-size:.85rem;color:var(--text-light)}

.filter-btn{padding:6px 16px;border-radius:50px;border:2px solid var(--light-gray);background:transparent;color:var(--text);font-weight:500;cursor:pointer;transition:var(--transition);font-family:var(--font);font-size:.85rem}
.filter-btn:hover{border-color:var(--primary);color:var(--primary)}
.filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Book Cards */
.book-card{background:var(--bg-card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:var(--transition);cursor:pointer}
.book-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.book-card .bc-icon{width:55px;height:55px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:#fff;margin-bottom:12px}
.bc-icon.pdf{background:linear-gradient(135deg,#ff6b6b,#ee5a24)}
.bc-icon.epub{background:linear-gradient(135deg,#6c5ce7,#5a4bd1)}
.bc-icon.doc{background:linear-gradient(135deg,#0984e3,#074c9e)}
.bc-icon.txt{background:linear-gradient(135deg,#00b894,#00a381)}
.book-card h5{font-weight:700;font-size:.95rem;margin-bottom:4px}
.book-card .bc-meta{font-size:.78rem;color:var(--text-light)}
.book-card .bc-badge{position:absolute;top:10px;left:10px;font-size:.7rem;padding:2px 10px;border-radius:50px;background:var(--primary);color:#fff}

/* Reader Toolbar */
.reader-toolbar{background:var(--bg-card);border-radius:var(--radius-sm);padding:12px 15px;box-shadow:var(--shadow);margin-bottom:15px;max-width:700px;margin-left:auto;margin-right:auto}
.tb-btn{background:transparent;border:1px solid var(--light-gray);border-radius:var(--radius-sm);color:var(--text);font-size:.8rem;padding:5px 10px;transition:var(--transition)}
.tb-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Reader Container */
.reader-container{max-width:750px;margin:0 auto;min-height:400px;background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;position:relative}
.reader-placeholder{padding:80px 20px;text-align:center;color:var(--text-light)}
.reader-placeholder i{font-size:4rem;display:block;margin-bottom:15px;opacity:.3}
.reader-placeholder h4{color:var(--text)}
.reader-content{padding:35px 40px;line-height:2;font-size:1.05rem;max-height:500px;overflow-y:auto;direction:rtl}
.reader-content p{margin-bottom:15px}
.reader-content.reader-night{background:#1a1a2e;color:#c0c0d0}
.reader-content.reader-sepia{background:#f5e6c8;color:#5b4636}
.reader-content.reader-green{background:#e8f5e9;color:#2e7d32}

/* Bookmarks */
.bookmarks-card{background:var(--bg-card);border-radius:var(--radius-lg);padding:25px;box-shadow:var(--shadow);max-width:700px;margin:0 auto}
.bm-item{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-radius:var(--radius-sm);background:var(--bg-section);margin-bottom:5px;font-size:.85rem;animation:fadeIn .3s ease}
.bm-item .bm-info{flex:1}
.bm-item .bm-book{font-weight:600}
.bm-item .bm-page{font-size:.78rem;color:var(--text-light)}
.bm-item .bm-delete{background:none;border:none;color:var(--danger);cursor:pointer;font-size:.85rem;transition:var(--transition)}
.bm-item .bm-delete:hover{transform:scale(1.2)}
.bm-item .bm-go{background:var(--primary);color:#fff;border:none;border-radius:6px;padding:4px 10px;font-size:.75rem;cursor:pointer;margin-right:8px}

/* Footer */
.footer{background:var(--darker);color:rgba(255,255,255,.6);padding:50px 0 25px;border-top:1px solid rgba(255,255,255,.05)}
.footer-brand{font-size:1.3rem;font-weight:800;margin-bottom:12px;color:#fff;display:flex;align-items:center;gap:10px}
.footer-brand i{color:var(--accent)}
.footer-desc{font-size:.9rem;line-height:1.8;margin-bottom:12px}
.footer-tags{display:flex;flex-wrap:wrap;gap:5px}
.ftag{background:rgba(255,255,255,.06);color:rgba(255,255,255,.45);padding:3px 10px;border-radius:50px;font-size:.75rem;transition:var(--transition);cursor:default}
.ftag:hover{background:var(--primary);color:#fff}
.footer h5{color:#fff;font-weight:700;margin-bottom:15px;padding-bottom:8px;position:relative}
.footer h5::after{content:'';position:absolute;bottom:0;right:0;width:30px;height:3px;background:var(--primary);border-radius:3px}
.footer-links{list-style:none;padding:0}
.footer-links li{margin-bottom:8px}
.footer-links a{color:rgba(255,255,255,.55);display:flex;align-items:center;gap:8px;transition:var(--transition);font-size:.9rem}
.footer-links a:hover{color:var(--accent);padding-right:5px}
.footer-divider{border-color:rgba(255,255,255,.06);margin:20px 0}
.footer-bottom{text-align:center}
.footer-bottom p{margin-bottom:2px;font-size:.9rem}
.footer-author{color:var(--accent);font-weight:600}
.footer-author:hover{color:#fff}
.heart{color:#ff6b6b;display:inline-block;animation:heartBeat 1.5s ease infinite}
@keyframes heartBeat{0%,100%{transform:scale(1)}50%{transform:scale(1.25)}}
.copyright{opacity:.45;font-size:.8rem}

/* Toast & Utils */
.scroll-top-btn{position:fixed;bottom:25px;left:25px;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:1.1rem;cursor:pointer;box-shadow:0 5px 20px rgba(108,92,231,.4);transition:var(--transition);opacity:0;transform:translateY(20px);pointer-events:none;z-index:999}
.scroll-top-btn.visible{opacity:1;transform:translateY(0);pointer-events:all}
#toastContainer{position:fixed;top:80px;left:50%;transform:translateX(-50%);z-index:99999;direction:rtl}
.toast-msg{background:linear-gradient(135deg,#6c5ce7,#a29bfe);color:#fff;padding:12px 24px;border-radius:10px;font-family:var(--font);font-weight:500;box-shadow:0 10px 40px rgba(0,0,0,.2);margin-bottom:10px;opacity:0;transform:translateY(-20px);transition:all .3s ease;text-align:center;min-width:180px;font-size:.9rem}

/* Responsive */
@media(max-width:1199px){.hero-title{font-size:2.6rem}}
@media(max-width:991px){
  .hero-section{min-height:auto;padding:100px 0 50px}
  .hero-title{font-size:2rem}
  .hero-content{text-align:center}
  .hero-desc{margin:0 auto}
  .rd-frame{width:220px;height:320px;margin-top:20px}
}
@media(max-width:767px){
  .hero-title{font-size:1.6rem}
  .rd-frame{width:180px;height:270px}
  .rd-screen{padding:10px}
  .rd-line{height:6px}
  .section-header h2{font-size:1.5rem}
  .library-section,.reader-section,.bookmarks-section{padding:40px 0}
  .reader-content{padding:20px;font-size:.95rem}
  .qs-item .qs-num{font-size:1.2rem}
}
@media(max-width:480px){
  .hero-title{font-size:1.3rem}
  .rd-frame{width:150px;height:230px;border-radius:16px;padding:8px}
  .rd-screen{border-radius:10px;padding:8px}
  .rd-line{height:5px;gap:6px}
  .reader-toolbar{padding:8px 10px}
  .reader-toolbar .tb-btn{font-size:.7rem;padding:3px 6px}
}
@media(min-width:1400px){.hero-title{font-size:3.8rem}}
@media(hover:none)and(pointer:coarse){.book-card:hover{transform:none}}