@import"https://fonts.googleapis.com/css2?family=Cairo:wght@400;600;700;900&display=swap";html{scroll-behavior:smooth}:root{--bg-color: #ffffff;--text-main: #111111;--text-desc: #555555;--nav-bg: #ffffff;--accent-color: #6366f1;--blob-color: #f0f2f5}.container.dark{--bg-color: #0f1014;--text-main: #ffffff;--text-desc: #b0b0b0;--nav-bg: #0f1014;--blob-color: #1e2229}*{margin:0;padding:0;box-sizing:border-box;font-family:Cairo,sans-serif;transition:all .3s ease}.container{min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg-color)}.navbar{display:flex;justify-content:space-between;align-items:center;padding:20px 8%;background-color:var(--nav-bg);border-bottom:1px solid rgba(0,0,0,.05);position:relative;z-index:1000}.logo{font-size:26px;font-weight:900;color:var(--accent-color);cursor:pointer}.nav-left{display:flex;align-items:center;gap:40px}.nav-links{display:flex;gap:25px}.nav-links a{text-decoration:none;color:var(--text-main);font-weight:600;font-size:16px;position:relative}.nav-links a:hover{color:var(--accent-color);transform:translateY(-2px)}.controls{display:flex;align-items:center;gap:20px}.user-controls{display:flex;align-items:center;gap:15px}.logout-btn{border:none;background-color:#8b2b2b;color:#fff;font-weight:700;padding:8px 20px;border-radius:12px;cursor:pointer;font-size:15px;transition:background-color .3s ease}.logout-btn:hover{background-color:#702222}.profile-img{width:40px;height:40px;border-radius:50%;object-fit:cover;border:2px solid var(--accent-color)}.telegram-auth-wrapper{display:flex;align-items:center}.hamburger-btn{display:none;background:none;border:none;color:var(--text-main);cursor:pointer;padding:5px}.dark-mode-btn{background:none;border:1px solid var(--text-desc);color:var(--text-main);padding:8px 15px;border-radius:50px;cursor:pointer}.login-btn{background-color:var(--accent-color);color:#fff;border:none;padding:10px 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var(--accent-color);padding:18px 45px;border-radius:15px;font-weight:700;font-size:1.1rem;cursor:pointer}.btn-secondary:hover{background-color:#6366f10d;transform:translateY(-5px)}.hero-image-container{flex:1;position:relative;display:flex;justify-content:center;align-items:center}.blob-background{width:500px;height:500px;background-color:var(--blob-color);border-radius:30% 70% 70% 30%/30% 30% 70% 70%;position:absolute;z-index:1}.professor-img{width:100%;max-width:300px;position:relative;z-index:2;border-radius:24px;object-fit:cover;filter:drop-shadow(0 20px 30px rgba(0,0,0,.15))}.footer{padding:30px;text-align:center;border-top:1px solid rgba(0,0,0,.05);color:var(--text-desc)}@media(max-width:1024px){.hero-section{flex-direction:column-reverse;text-align:center;padding:60px 20px}.hero-text-container{text-align:center;display:flex;flex-direction:column;align-items:center}.hero-cta-buttons{justify-content:center}.hero-title{font-size:2.8rem}.blob-background{width:320px;height:320px}}.courses-section{padding:100px 8%;background-color:var(--bg-color);text-align:center}.courses-main-title{font-size:2.8rem;margin-bottom:50px;font-weight:900;color:var(--text-main);display:inline-block;border-bottom:4px solid var(--accent-color)}.courses-wrapper{animation:revealScale .4s ease forwards}.courses-grid{display:flex;justify-content:center;gap:30px;flex-wrap:wrap}.course-card{background-color:var(--blob-color);width:100%;max-width:400px;border-radius:20px;overflow:hidden;box-shadow:0 10px 30px #0000004d;border:1px solid rgba(255,255,255,.05);transition:transform .3s ease,box-shadow .3s ease}.course-card:hover{transform:translateY(-10px);box-shadow:0 15px 40px #0006}.course-img-placeholder{width:100%;height:220px;background-color:#252a33;display:flex;align-items:center;justify-content:center;color:#444;font-weight:700}.course-info{padding:30px;text-align:right}.course-info h3{font-size:1.6rem;font-weight:800;color:var(--text-main);margin-bottom:12px}.course-info p{color:var(--text-desc);font-size:1rem;line-height:1.6;margin-bottom:30px;min-height:50px}.course-btns{display:flex!important;gap:12px!important;width:100%!important;margin-top:20px}.btn-orange,.btn-purple{flex:1!important;padding:12px 5px!important;border-radius:10px!important;font-weight:800!important;font-size:1rem!important;cursor:pointer;border:none!important;transition:.3s ease;display:flex!important;align-items:center;justify-content:center;color:#fff!important;white-space:nowrap}.btn-orange{background-color:#e67e22!important}.btn-purple{background:linear-gradient(135deg,#6366f1,#a855f7)!important;box-shadow:0 4px 15px #a855f766;min-width:100px}.btn-orange:hover,.btn-purple:hover{transform:translateY(-3px);filter:brightness(1.1);box-shadow:0 8px 20px #0000004d}.btn-purple:hover{filter:brightness(1.2);transform:translateY(-2px);box-shadow:0 8px 25px #a855f799}.back-btn{background:transparent;color:var(--accent-color);border:2px solid var(--accent-color);padding:10px 25px;border-radius:10px;font-weight:700;font-size:1.1rem;cursor:pointer;margin-bottom:30px;transition:.3s ease;display:inline-flex;align-items:center;gap:8px}.back-btn:hover{background-color:#6366f10d;transform:translate(5px)}@keyframes revealUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes revealScale{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.navbar,.hero-text-container,.hero-image-container,.courses-section{opacity:0;animation:revealUp .8s cubic-bezier(.2,.8,.2,1) forwards}.navbar{animation-delay:.1s}.hero-text-container{animation-delay:.3s}.hero-image-container{animation-name:revealScale;animation-delay:.5s}.courses-section{animation-delay:.7s}.footer{opacity:1!important;animation:none!important}.theme-switch{width:54px;height:28px;border-radius:30px;background-color:#ccc;border:none;position:relative;cursor:pointer;transition:background-color .3s ease;display:flex;align-items:center;padding:0;flex-shrink:0}.theme-switch.active{background-color:#4ade80}.switch-knob{width:22px;height:22px;background-color:#fff;border-radius:50%;position:absolute;right:3px;transition:transform .3s cubic-bezier(.4,0,.2,1);box-shadow:0 2px 4px #0003}.theme-switch.active .switch-knob{transform:translate(-26px)}.nav-links a{position:relative;padding-bottom:5px}.nav-links a.active{color:var(--accent-color)}.nav-links a.active:after{content:"";position:absolute;bottom:0;right:0;width:100%;height:2px;background-color:var(--accent-color);border-radius:2px;animation:slideIn .3s ease forwards}@keyframes slideIn{0%{width:0;opacity:0}to{width:100%;opacity:1}}@media(max-width:768px){.courses-grid{flex-direction:column;align-items:center}.navbar{padding:15px 5%}.logo{font-size:22px}.hamburger-btn{display:block;z-index:1001}.nav-left{position:absolute;top:100%;left:0;width:100%;background-color:var(--nav-bg);flex-direction:column;padding:20px 0;box-shadow:0 10px 30px #00000026;border-top:1px solid rgba(0,0,0,.05);gap:25px;z-index:1000;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);transition:all .3s ease}.container.dark .nav-left{box-shadow:0 10px 30px #00000080;border-top:1px solid rgba(255,255,255,.05)}.nav-left.mobile-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.nav-links{flex-direction:column;width:100%;align-items:center;gap:20px}.nav-links a{font-size:18px}.controls{flex-direction:column;width:100%;align-items:center}.telegram-auth-wrapper{transform:scale(.85);transform-origin:center}.logout-btn{padding:6px 14px;font-size:13px;border-radius:8px}.profile-img{width:32px;height:32px}}.viewer-section{padding:40px 8%;background-color:var(--bg-color);min-height:80vh}.viewer-header{margin-bottom:30px;display:flex;flex-direction:column;align-items:flex-start;gap:15px}.viewer-header h2{font-size:2rem;color:var(--text-main)}.viewer-layout{display:flex;gap:30px;align-items:flex-start}.playlist-sidebar{width:350px;flex-shrink:0;background-color:var(--blob-color);border-radius:15px;padding:20px;border:1px solid rgba(150,150,150,.1);box-shadow:0 5px 20px #0000000d}.sidebar-title{font-size:1.2rem;color:var(--text-main);margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid var(--accent-color)}.module-item{margin-bottom:10px;background-color:var(--bg-color);border-radius:10px;overflow:hidden;border:1px solid rgba(150,150,150,.1)}.module-header{width:100%;display:flex;justify-content:space-between;align-items:center;padding:15px;background:none;border:none;color:var(--text-main);font-weight:700;cursor:pointer;transition:.3s}.module-header:hover,.module-header.active{background-color:#6366f10d;color:var(--accent-color)}.module-content{padding:10px;background-color:var(--bg-color);border-top:1px solid rgba(150,150,150,.1)}.video-item{display:flex;justify-content:space-between;align-items:center;padding:12px 10px;border-radius:8px;cursor:pointer;transition:.2s;color:var(--text-desc);font-size:.95rem}.video-item:hover:not(.locked){background-color:#6366f11a;color:var(--accent-color)}.video-item.locked{opacity:.5;cursor:not-allowed}.video-item-info{display:flex;align-items:center;gap:10px}.video-item .duration{font-size:.85rem;background-color:var(--blob-color);padding:3px 8px;border-radius:5px}.viewer-main-content{flex:1;display:flex;flex-direction:column;gap:30px}.video-player-container{background-color:var(--blob-color);border-radius:15px;overflow:hidden;border:1px solid rgba(150,150,150,.1);box-shadow:0 10px 30px #0000001a}.video-placeholder{width:100%;aspect-ratio:16 / 9;background-color:#000;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;gap:15px}.video-details{padding:20px}.video-details h3{font-size:1.5rem;color:var(--text-main);margin-bottom:10px}.video-details p{color:var(--text-desc);line-height:1.6}.exams-container{background-color:var(--blob-color);border-radius:15px;padding:25px;border:1px solid rgba(150,150,150,.1)}.exams-title{font-size:1.3rem;color:var(--text-main);margin-bottom:20px}.exams-list{display:flex;flex-direction:column;gap:15px}.exam-card{display:flex;justify-content:space-between;align-items:center;background-color:var(--bg-color);padding:20px;border-radius:10px;border:1px solid rgba(150,150,150,.1);transition:transform .3s ease}.exam-card:hover{transform:translateY(-3px);box-shadow:0 5px 15px #00000014}.exam-info{display:flex;align-items:center;gap:15px}.exam-info h4{color:var(--text-main);font-size:1.1rem;margin-bottom:5px}.exam-info p{color:var(--text-desc);font-size:.9rem}@media(max-width:1024px){.viewer-layout{flex-direction:column}.playlist-sidebar{width:100%;order:2}.viewer-main-content{width:100%;order:1}}:root{--bg-color: #ffffff;--text-primary: #111111;--text-secondary: #555555;--accent-purple: #6d4aff;--nav-footer-bg: #111111;--nav-text: #ffffff}[data-theme=dark]{--bg-color: #0f0f0f;--text-primary: #ffffff;--text-secondary: #b0b0b0;--accent-purple: #8162ff;--nav-footer-bg: #000000}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;width:100%;min-height:100vh;background-color:var(--bg-color);color:var(--text-primary);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;transition:background-color .4s ease,color .4s ease;direction:rtl}a{text-decoration:none;color:inherit}button{cursor:pointer;transition:.3s}