:root{--bg-primary:#080c18;--bg-secondary:#0d1224;--bg-card:#111827;--bg-card-hover:#161f35;--bg-elevated:#1a2440;--bg-overlay:#080c18eb;--accent:#00d4aa;--accent-light:#00e5b8;--accent-dark:#00b894;--accent-glow:#00d4aa40;--accent-bg:#00d4aa14;--text-primary:#f0f4ff;--text-secondary:#8b9abf;--text-muted:#5a6a8a;--text-accent:#00d4aa;--border-color:#ffffff12;--border-accent:#00d4aa4d;--border-radius-sm:8px;--border-radius:12px;--border-radius-lg:16px;--border-radius-xl:20px;--border-radius-full:9999px;--shadow-card:0 4px 24px #0006;--shadow-accent:0 0 24px #00d4aa33;--shadow-elevated:0 8px 40px #0009;--space-xs:.25rem;--space-sm:.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem;--space-4xl:6rem;--navbar-height:64px;--font-main:"Cairo", "Tajawal", "Segoe UI", sans-serif;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-md:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:2rem;--font-size-4xl:2.5rem;--font-size-5xl:3.5rem;--transition-fast:.15s ease;--transition:.25s ease;--transition-slow:.4s ease;--z-base:1;--z-dropdown:100;--z-sticky:200;--z-overlay:300;--z-modal:400;--z-toast:500}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;font-size:16px}body{font-family:var(--font-main);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;direction:rtl;min-height:100vh;line-height:1.7;overflow-x:hidden}#root{flex-direction:column;min-height:100vh;display:flex}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button{font-family:var(--font-main);cursor:pointer;background:0 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var(--transition);white-space:nowrap;border:2px solid #0000;padding:.625rem 1.5rem;font-weight:600;line-height:1.4;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);color:#0a0e1a;box-shadow:0 4px 20px var(--accent-glow);border-color:#0000}.btn-primary:hover{background:linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 100%);transform:translateY(-1px);box-shadow:0 6px 28px #00d4aa66}.btn-outline{color:var(--accent);border-color:var(--accent);background:0 0}.btn-outline:hover{background:var(--accent-bg);box-shadow:var(--shadow-accent)}.btn-ghost{color:var(--text-primary);border-color:var(--border-color);background:#ffffff0f}.btn-ghost:hover{background:#ffffff1a;border-color:#ffffff26}.btn-sm{font-size:var(--font-size-sm);padding:.375rem 1rem}.btn-lg{font-size:var(--font-size-lg);padding:.875rem 2rem}.btn-full{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--border-radius-lg);transition:all var(--transition);overflow:hidden}.card:hover{border-color:var(--border-accent);box-shadow:var(--shadow-card);transform:translateY(-2px)}.badge{border-radius:var(--border-radius-full);font-size:var(--font-size-xs);align-items:center;gap:4px;padding:.25rem .75rem;font-weight:600;display:inline-flex}.badge-accent{background:var(--accent-bg);color:var(--accent);border:1px solid var(--border-accent)}.badge-free{color:var(--accent);background:#00d4aa26;border:1px solid #00d4aa4d}.form-label{font-size:var(--font-size-sm);color:var(--text-secondary);font-weight:600}.form-input{background:var(--bg-elevated);border:1px solid 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var(--border-color);border-radius:var(--border-radius-xl);width:100%;max-width:640px;max-height:90vh;box-shadow:var(--shadow-elevated);position:relative;overflow-y:auto}.modal-header{padding:var(--space-lg) var(--space-xl);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;display:flex}.modal-title{font-size:var(--font-size-xl);font-weight:700}.modal-close{border-radius:var(--border-radius);border:1px solid var(--border-color);width:36px;height:36px;color:var(--text-secondary);transition:all var(--transition-fast);cursor:pointer;background:#ffffff0f;justify-content:center;align-items:center;font-size:1.25rem;display:flex}.modal-close:hover{color:var(--text-primary);background:#ffffff1f}.modal-body{padding:var(--space-xl)}.spinner{border:3px solid #00d4aa33;border-top-color:var(--accent);border-radius:50%;width:24px;height:24px;animation:.7s linear infinite spin;display:inline-block}@keyframes 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(width<=768px){.container{padding-inline:var(--space-md)}.section{padding-block:var(--space-2xl)}.grid-3,.grid-2{grid-template-columns:1fr}.section-title{font-size:var(--font-size-2xl)}.btn-lg{font-size:var(--font-size-md);padding:.75rem 1.5rem}.modal-box{border-radius:var(--border-radius-lg);max-width:100%}.modal-body{padding:var(--space-lg)}}@media (width<=480px){html{font-size:15px}.container{padding-inline:var(--space-md)}.section-title{font-size:1.6rem}.modal-box{margin:var(--space-sm)}}.navbar{top:0;z-index:var(--z-sticky);height:var(--navbar-height);-webkit-backdrop-filter:blur(20px);transition:all var(--transition);background:#080c188c;border-bottom:1px solid #0000;position:fixed;inset-inline:0}.navbar--scrolled{border-bottom-color:var(--border-color);background:#080c18ed;box-shadow:0 4px 40px #00000073}.navbar__inner{max-width:1200px;padding-inline:var(--space-xl);align-items:center;gap:var(--space-xl);height:100%;margin-inline:auto;display:flex}.navbar__logo{align-items:center;gap:var(--space-sm);transition:opacity var(--transition-fast);flex-shrink:0;text-decoration:none;display:flex}.navbar__logo:hover{opacity:.88}.navbar__logo-img{border-radius:var(--border-radius);object-fit:contain;background:var(--accent-bg);border:1px solid var(--border-accent);width:40px;height:40px;padding:2px}.navbar__logo-text{flex-direction:column;line-height:1.2;display:flex}.navbar__logo-name{font-size:var(--font-size-md);color:var(--text-primary);white-space:nowrap;font-weight:800}.navbar__logo-sub{color:var(--accent);white-space:nowrap;letter-spacing:.02em;font-size:.6rem;font-weight:500}.navbar__links{align-items:center;gap:var(--space-xs);margin-inline-start:auto;display:flex}.navbar__link{border-radius:var(--border-radius-full);font-size:var(--font-size-md);color:var(--text-secondary);transition:all var(--transition-fast);padding:.4rem .875rem;font-weight:600;text-decoration:none;position:relative}.navbar__link:hover{color:var(--text-primary);background:#ffffff0f}.navbar__link.active{color:var(--accent);background:var(--accent-bg)}.navbar__auth{align-items:center;gap:var(--space-sm);flex-shrink:0;display:flex}.navbar__user{align-items:center;gap:var(--space-sm);display:flex}.navbar__avatar{background:linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);color:#060b14;width:36px;height:36px;font-weight:800;font-size:var(--font-size-md);box-shadow:0 0 12px var(--accent-glow);border:2px solid #00d4aa4d;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.navbar__hamburger{border-radius:var(--border-radius);border:1px solid var(--border-color);cursor:pointer;width:40px;height:40px;transition:background var(--transition-fast);background:#ffffff0f;flex-direction:column;flex-shrink:0;justify-content:center;align-items:center;gap:5px;margin-inline-start:auto;display:none}.navbar__hamburger:hover{background:#ffffff1a;border-color:#ffffff26}.navbar__hamburger span{background:var(--text-primary);width:20px;height:2px;transition:all var(--transition);transform-origin:50%;border-radius:2px;display:block}.navbar__hamburger.open span:first-child{transform:translateY(7px)rotate(45deg)}.navbar__hamburger.open span:nth-child(2){opacity:0;transform:scaleX(0)}.navbar__hamburger.open span:nth-child(3){transform:translateY(-7px)rotate(-45deg)}.drawer-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:calc(var(--z-sticky) + 1);background:#080c18b8;animation:.2s fadeIn;position:fixed;inset:0}.drawer{background:var(--bg-secondary);border-inline-start:1px solid var(--border-color);width:min(320px,85vw);height:100vh;z-index:calc(var(--z-sticky) + 2);transition:transform var(--transition-slow) cubic-bezier(.4, 0, .2, 1);flex-direction:column;display:flex;position:fixed;top:0;right:0;overflow-y:auto;transform:translate(100%)}.drawer--open{transform:translate(0)}.drawer__header{padding:var(--space-lg);border-bottom:1px solid var(--border-color);min-height:var(--navbar-height);justify-content:space-between;align-items:center;display:flex}.drawer__nav{padding:var(--space-md);gap:var(--space-xs);flex-direction:column;flex:1;display:flex}.drawer__link{align-items:center;gap:var(--space-md);padding:.875rem var(--space-md);border-radius:var(--border-radius);font-size:var(--font-size-md);color:var(--text-secondary);transition:all var(--transition-fast);border:1px solid #0000;font-weight:600;text-decoration:none;display:flex}.drawer__link:hover,.drawer__link.active{background:var(--accent-bg);color:var(--accent);border-color:var(--border-accent)}.drawer__auth{padding:var(--space-lg);border-top:1px solid var(--border-color);gap:var(--space-sm);flex-direction:column;display:flex}.drawer__user-info{align-items:center;gap:var(--space-sm);padding:var(--space-sm) 0;display:flex}.drawer__user-email{font-size:var(--font-size-sm);color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}@media (width<=768px){.navbar__links,.navbar__auth{display:none}.navbar__hamburger{display:flex}.navbar__inner{padding-inline:var(--space-md)}}@media (width<=480px){.navbar__logo-text{display:none}}.footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding-block:var(--space-2xl) var(--space-xl);margin-top:auto}.footer__inner{justify-content:space-between;align-items:center;gap:var(--space-xl);margin-bottom:var(--space-xl);flex-wrap:wrap;display:flex}.footer__brand{flex-shrink:0}.footer__logo{align-items:center;gap:var(--space-sm);text-decoration:none;display:flex}.footer__logo-img{object-fit:contain;border-radius:var(--border-radius);width:36px;height:36px}.footer__logo-text{flex-direction:column;line-height:1.2;display:flex}.footer__logo-name{font-size:var(--font-size-md);color:var(--text-primary);font-weight:800}.footer__logo-sub{color:var(--accent);font-size:.65rem;font-weight:500}.footer__links{align-items:center;gap:var(--space-lg);flex-wrap:wrap;display:flex}.footer__link{font-size:var(--font-size-sm);color:var(--text-secondary);transition:color var(--transition-fast);text-decoration:none}.footer__link:hover{color:var(--accent)}.footer__bottom{border-top:1px solid var(--border-color);padding-top:var(--space-lg);text-align:center}.footer__copy{font-size:var(--font-size-sm);color:var(--text-muted)}@media (width<=640px){.footer__inner{align-items:flex-start;gap:var(--space-lg);flex-direction:column}.footer__links{gap:var(--space-md)}}.layout{flex-direction:column;min-height:100vh;display:flex}.layout__main{padding-top:var(--navbar-height);flex:1}.hero{min-height:calc(100vh - var(--navbar-height));padding-block:var(--space-4xl);align-items:center;display:flex;position:relative;overflow:hidden}.hero__bg{pointer-events:none;position:absolute;inset:0;overflow:hidden}.hero__bg-glow{filter:blur(110px);opacity:.1;border-radius:50%;position:absolute}.hero__bg-glow--1{background:radial-gradient(circle, var(--accent) 0%, transparent 65%);width:700px;height:700px;animation:7s ease-in-out infinite pulse-glow;top:-200px;right:-150px}.hero__bg-glow--2{opacity:.07;background:radial-gradient(circle,#1a4bff 0%,#0000 65%);width:450px;height:450px;bottom:-100px;left:-80px}.hero__grid{background-image:linear-gradient(#00d4aa0a 1px,#0000 1px),linear-gradient(90deg,#00d4aa0a 1px,#0000 1px);background-size:60px 60px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(#000 20%,#0000 75%);mask-image:radial-gradient(#000 20%,#0000 75%)}.hero__content{z-index:var(--z-base);text-align:center;max-width:780px;margin-inline:auto;position:relative}.hero__badge{align-items:center;gap:var(--space-sm);border-radius:var(--border-radius-full);background:var(--accent-bg);border:1px solid var(--border-accent);color:var(--accent);font-size:var(--font-size-sm);margin-bottom:var(--space-xl);letter-spacing:.02em;padding:.4rem 1.25rem;font-weight:600;display:inline-flex}.hero__badge-icon{font-style:normal;animation:4s linear infinite spin;display:inline-block}.hero__title{font-size:clamp(2.2rem, 6vw, var(--font-size-5xl));color:var(--text-primary);margin-bottom:var(--space-lg);letter-spacing:-.5px;font-weight:900;line-height:1.15}.hero__title--accent{color:var(--accent);display:inline}.hero__subtitle{font-size:clamp(var(--font-size-md), 2vw, var(--font-size-lg));color:var(--text-secondary);max-width:580px;margin-inline:auto;margin-bottom:var(--space-2xl);line-height:1.85}.hero__actions{justify-content:center;gap:var(--space-md);flex-wrap:wrap;display:flex}.features{padding-top:0;padding-bottom:var(--space-4xl)}.features__grid{gap:var(--space-lg);grid-template-columns:repeat(3,1fr);display:grid}.feature-card{padding:var(--space-xl) var(--space-lg);text-align:center;align-items:center;gap:var(--space-md);background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--border-radius-lg);transition:all var(--transition);flex-direction:column;display:flex;position:relative;overflow:hidden}.feature-card:before{content:"";background:radial-gradient(circle at 50% 0%, var(--accent-bg) 0%, transparent 70%);opacity:0;transition:opacity var(--transition);position:absolute;inset:0}.feature-card:hover{border-color:var(--border-accent);background:var(--bg-card-hover);box-shadow:var(--shadow-card), 0 0 24px var(--accent-glow);transform:translateY(-5px)}.feature-card:hover:before{opacity:1}.feature-card__icon{z-index:1;border-radius:var(--border-radius-lg);background:var(--accent-bg);border:1px solid var(--border-accent);width:58px;height:58px;color:var(--accent);transition:all var(--transition);flex-shrink:0;justify-content:center;align-items:center;display:flex;position:relative}.feature-card:hover .feature-card__icon{box-shadow:0 0 20px var(--accent-glow);background:#00d4aa26}.feature-card__title{z-index:1;font-size:var(--font-size-lg);color:var(--text-primary);font-weight:700;position:relative}.feature-card__desc{z-index:1;font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.75;position:relative}@media (width<=1024px){.features__grid{gap:var(--space-md);grid-template-columns:repeat(3,1fr)}}@media (width<=768px){.hero{min-height:auto;padding-block:var(--space-3xl) var(--space-2xl)}.features__grid{grid-template-columns:1fr;max-width:440px;margin-inline:auto}.hero__bg-glow--1{width:320px;height:320px}.feature-card{padding:var(--space-lg)}}@media (width<=480px){.hero__title{font-size:1.9rem}.hero__subtitle{font-size:var(--font-size-md)}.hero__badge{font-size:var(--font-size-xs)}}.courses-page{min-height:100vh}.courses-header{padding-top:calc(var(--navbar-height) + var(--space-3xl));padding-bottom:var(--space-xl)}.courses-header__content{text-align:center;margin-bottom:var(--space-2xl)}.courses-header__title{font-size:clamp(1.8rem, 4vw, var(--font-size-4xl));color:var(--accent);margin-bottom:var(--space-sm);font-weight:900}.courses-header__subtitle{font-size:var(--font-size-md);color:var(--text-secondary)}.courses-filters{align-items:center;gap:var(--space-lg);flex-wrap:wrap;justify-content:space-between;max-width:940px;margin-inline:auto;display:flex}.courses-filters__search-wrap{flex:1;min-width:220px;max-width:380px;position:relative}.courses-filters__search-icon{inset-inline-start:.875rem;color:var(--text-muted);pointer-events:none;position:absolute;top:50%;transform:translateY(-50%)}.courses-filters__search{border-color:var(--border-color);background:#ffffff0a;width:100%;padding-inline-start:2.5rem}.courses-filters__search:focus{border-color:var(--accent);background:#00d4aa0a}.courses-filters__cats{align-items:center;gap:var(--space-sm);flex-wrap:wrap;display:flex}.courses-filters__cat-btn{border-radius:var(--border-radius-full);font-size:var(--font-size-sm);color:var(--text-secondary);border:1px solid var(--border-color);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;font-weight:600;font-family:var(--font-main);background:#ffffff0a;padding:.4rem 1.1rem;line-height:1.4}.courses-filters__cat-btn:hover{color:var(--text-primary);background:#ffffff14;border-color:#ffffff26}.courses-filters__cat-btn.active{background:var(--accent);color:#060b14;border-color:var(--accent);box-shadow:0 2px 14px var(--accent-glow)}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.courses-grid-section{padding-block:var(--space-2xl) var(--space-4xl)}.courses-grid{gap:var(--space-xl);grid-template-columns:repeat(3,1fr);display:grid}.courses-empty{align-items:center;gap:var(--space-lg);padding:var(--space-4xl) var(--space-xl);text-align:center;flex-direction:column;display:flex}.courses-empty__icon{background:var(--accent-bg);border:1px solid var(--border-accent);width:80px;height:80px;color:var(--accent);opacity:.7;border-radius:50%;justify-content:center;align-items:center;display:flex}.courses-empty__msg{font-size:var(--font-size-lg);color:var(--text-secondary)}.course-card{cursor:default;transition:transform var(--transition), box-shadow var(--transition), border-color var(--transition);flex-direction:column;display:flex;overflow:hidden}.course-card:hover{box-shadow:var(--shadow-card), 0 0 28px #00d4aa1f;border-color:var(--border-accent);transform:translateY(-6px)}.course-card__thumb{aspect-ratio:16/9;background:var(--bg-elevated);flex-shrink:0;position:relative;overflow:hidden}.course-card__img{object-fit:cover;width:100%;height:100%;transition:transform .5s}.course-card:hover .course-card__img{transform:scale(1.05)}.course-card__overlay{padding:var(--space-sm) var(--space-md);background:linear-gradient(#080c1873 0%,#0000 38%,#080c18bf 100%);flex-direction:column;justify-content:space-between;display:flex;position:absolute;inset:0}.course-card__subject-badge{border-radius:var(--border-radius-full);background:var(--accent-bg);color:var(--accent);border:1px solid var(--border-accent);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);letter-spacing:.02em;align-self:flex-start;align-items:center;padding:.2rem .65rem;font-size:.68rem;font-weight:700;display:inline-flex}.course-card__stats-chip{color:#ffffffd9;border-radius:var(--border-radius-full);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#080c18a6;align-self:flex-end;align-items:center;gap:5px;padding:3px 10px;font-size:.68rem;display:flex}.course-card__stat{align-items:center;gap:4px;display:flex}.course-card__stat-sep{opacity:.5}.course-card__progress-wrap{bottom:0;background:#ffffff1f;align-items:center;height:4px;display:flex;position:absolute;inset-inline:0}.course-card__progress-bar{background:linear-gradient(90deg, 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(width<=480px){.not-found__title{font-size:var(--font-size-2xl)}.not-found__desc{font-size:var(--font-size-md)}.not-found__actions{flex-direction:column;align-items:center}}.admin-login-page{background:var(--bg-primary);min-height:100vh;padding:var(--space-md);justify-content:center;align-items:center;display:flex;position:relative}.admin-login-page:before{content:"";pointer-events:none;background:radial-gradient(circle,#00d4aa0d 0%,#0000 70%);border-radius:50%;width:500px;height:500px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.admin-login-card{background:var(--bg-card);border:1px solid 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#ef444440}.rr-mobile-cards{gap:var(--space-md);flex-direction:column;display:none}.rr-mobile-card{padding:var(--space-lg)}.rr-mobile-card__header{margin-bottom:var(--space-md);justify-content:space-between;align-items:flex-start;gap:var(--space-sm);display:flex}.rr-mobile-card__name{font-size:var(--font-size-md);color:var(--text-primary);margin-bottom:4px;font-weight:700}.rr-mobile-card__details{gap:var(--space-sm);margin-bottom:var(--space-md);padding:var(--space-md);background:var(--bg-elevated);border-radius:var(--border-radius);flex-direction:column;display:flex}.rr-detail-row{justify-content:space-between;align-items:center;gap:var(--space-sm);font-size:var(--font-size-sm);display:flex}.rr-detail-label{color:var(--text-secondary);flex-shrink:0;font-weight:600}.rr-mobile-card__actions{justify-content:stretch}.rr-mobile-card__actions .rr-btn-accept,.rr-mobile-card__actions .rr-btn-reject{font-size:var(--font-size-sm);flex:1;justify-content:center;padding:.6rem 1rem}@media 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