:root{--color-primary:#0a192f;--color-secondary:#0056d2;--color-background:#f0f4f8;--color-surface:#fff;--color-surface-2:#f8fafc;--color-text-primary:#0a192f;--color-text-secondary:#6b7280;--color-success:#10b981;--color-warning:#e8a33d;--color-danger:#d9534f;--color-disabled:#b0b3b8;--color-border:#e2e8f0;--color-accent:#0ea5e9;--color-selected:#e6f0ff;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--stat-blue-bg:#eff6ff;--stat-blue-text:#1d4ed8;--stat-green-bg:#ecfdf5;--stat-green-text:#059669;--stat-orange-bg:#fffbeb;--stat-orange-text:#b45309;--navbar-bg:#ffffffe6;--sidebar-bg:#fff;--table-header-bg:#0a192f;--table-header-text:#fff;--btn-bg:#0a192f;--font-family-base:"Cairo", sans-serif;--shadow-sm:0 1px 4px #0000000f;--shadow-md:0 4px 16px #00000014;--shadow-lg:0 8px 32px #0000001a}[data-theme=dark]{--color-primary:#38bdf8;--color-secondary:#60a5fa;--color-background:#0b1120;--color-surface:#141e30;--color-surface-2:#1a2640;--color-text-primary:#f0f6ff;--color-text-secondary:#8b9dc3;--color-success:#34d399;--color-warning:#fbbf24;--color-danger:#f87171;--color-disabled:#4b5563;--color-border:#1e3050;--color-accent:#38bdf8;--color-selected:#16283f;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--stat-blue-bg:#0d2345;--stat-blue-text:#93c5fd;--stat-green-bg:#052e16;--stat-green-text:#6ee7b7;--stat-orange-bg:#1c1200;--stat-orange-text:#fcd34d;--navbar-bg:#0d1630eb;--sidebar-bg:#111827;--table-header-bg:#1e3a5f;--table-header-text:#f0f6ff;--btn-bg:#0369a1;--shadow-sm:0 1px 4px #0000004d;--shadow-md:0 4px 16px #00000059;--shadow-lg:0 8px 32px #0006}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-family-base);background-color:var(--color-background);color:var(--color-text-primary);line-height:1.6;transition:background-color .3s,color .3s}a{color:var(--color-secondary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:20px}.auth-container{justify-content:center;align-items:center;min-height:100vh;display:flex}.card{background-color:var(--color-surface);border:1px solid var(--color-border);width:100%;box-shadow:var(--shadow-sm);border-radius:12px;padding:30px;transition:background-color .3s,border-color .3s}.auth-container .card{max-width:440px}.card-title{text-align:center;color:var(--color-text-primary);margin-bottom:20px}.form-group{margin-bottom:15px}.form-group label{color:var(--color-text-secondary);margin-bottom:5px;display:block}input:not([type=checkbox]):not([type=radio]):not([type=file]):not([type=range]),select,textarea{background-color:var(--color-surface);color:var(--color-text-primary);font-family:inherit}input::placeholder,textarea::placeholder{color:var(--color-text-secondary);opacity:1}.form-control{border:1px solid var(--color-border);background-color:var(--color-surface);width:100%;color:var(--color-text-primary);border-radius:8px;padding:10px;font-family:inherit;font-size:1rem;transition:border-color .2s,background-color .3s}.form-control:focus{border-color:var(--color-secondary);outline:none;box-shadow:0 0 0 3px #0056d226}.btn{background-color:var(--btn-bg);color:#fff;cursor:pointer;text-align:center;border:none;border-radius:10px;justify-content:center;align-items:center;width:100%;padding:12px 24px;font-family:inherit;font-size:1rem;font-weight:600;transition:all .25s cubic-bezier(.4,0,.2,1);display:inline-flex;position:relative;overflow:hidden;box-shadow:0 2px 6px #00000014}.btn:hover{opacity:.95;transform:translateY(-2px);box-shadow:0 6px 18px #0000001f}.btn:active{transform:translateY(0)scale(.97);box-shadow:0 2px 4px #0000001a}.btn:disabled{background-color:var(--color-disabled);cursor:not-allowed;box-shadow:none;opacity:.65;transform:none}.btn-purple{color:#fff!important;background:linear-gradient(135deg,#1d4ed8 0%,#2563eb 100%)!important;box-shadow:0 4px 14px #2563eb47!important}.btn-purple:hover{background:linear-gradient(135deg,#1e40af 0%,#1d4ed8 100%)!important;transform:translateY(-2px)scale(1.01)!important;box-shadow:0 6px 20px #2563eb6b!important}.btn-teal{color:#fff!important;background:linear-gradient(135deg,#0f766e 0%,#0d9488 100%)!important;box-shadow:0 4px 14px #0d948847!important}.btn-teal:hover{background:linear-gradient(135deg,#115e59 0%,#0f766e 100%)!important;transform:translateY(-2px)scale(1.02)!important;box-shadow:0 6px 20px #0d94886b!important}.btn-danger-pink{color:#fff!important;background:linear-gradient(135deg,#dc2626 0%,#e11d48 100%)!important;box-shadow:0 4px 12px #dc262647!important}.btn-danger-pink:hover{transform:translateY(-2px)scale(1.03)!important;box-shadow:0 6px 18px #dc262666!important}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseGlow{0%{box-shadow:0 0 #0056d266}70%{box-shadow:0 0 0 10px #0056d200}to{box-shadow:0 0 #0056d200}}@keyframes floatAnim{0%{transform:translateY(0)}50%{transform:translateY(-6px)}to{transform:translateY(0)}}.animate-fade-in{animation:.35s ease-out forwards fadeIn}.animate-slide-up{animation:.4s cubic-bezier(.16,1,.3,1) forwards slideUp}.animate-float{animation:4s ease-in-out infinite floatAnim}.alert{border-radius:8px;margin-bottom:15px;padding:10px;font-size:.9rem}.alert-danger{color:var(--color-danger);background-color:#fde8e8;border:1px solid #fbd5d5}.text-center{text-align:center}.mt-3{margin-top:15px}.mb-3{margin-bottom:15px}.hover-bg{transition:background-color .2s}.hover-bg:hover{background-color:var(--color-background)}.page-header{border-bottom:2px solid var(--color-secondary);color:var(--color-text-primary);justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:10px;display:flex}table{border-collapse:separate;border-spacing:0;text-align:right;width:100%;font-size:.95rem}table th{background-color:var(--table-header-bg);color:var(--table-header-text);letter-spacing:.5px;padding:16px;font-size:.95rem;font-weight:700}table th:first-child{border-top-right-radius:8px}table th:last-child{border-top-left-radius:8px}table td{color:var(--color-text-primary);border-bottom:1px solid var(--color-border);vertical-align:middle;padding:16px;transition:background-color .2s}table tbody tr:last-child td{border-bottom:none}table tbody tr:hover td{background-color:var(--color-surface-2)}.btn-outline{border:1px solid var(--color-secondary);color:var(--color-secondary);background-color:#0000}.btn-outline:hover{background-color:var(--color-surface-2);opacity:1}.layout-container{min-height:100vh;display:flex}.sidebar{background-color:var(--sidebar-bg);border-left:1px solid var(--color-border);flex-direction:column;flex-shrink:0;padding:20px 0;transition:width .3s ease-in-out,background-color .3s;display:flex;overflow:hidden}.main-wrapper{flex-direction:column;flex-grow:1;display:flex}.premium-navbar{background-color:var(--navbar-bg);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--color-border);height:70px;box-shadow:var(--shadow-sm);z-index:1000;justify-content:space-between;align-items:center;padding:0 30px;transition:background-color .3s,border-color 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ease-in-out;display:flex}.nav-link:hover{background-color:var(--color-surface-2);color:var(--color-secondary);text-decoration:none}.nav-link.active{color:var(--color-secondary);background-color:var(--stat-blue-bg);border-inline-start-color:var(--color-secondary);font-weight:700}.nav-link-accent{background-image:linear-gradient(to inline-end, #6d28d929 0%, #2563eb1a 100%);color:var(--color-text-primary);font-weight:700}.nav-link-accent .nav-icon{color:#a855f7}.nav-link-accent:hover{background-image:linear-gradient(to inline-end, #6d28d942 0%, #2563eb29 100%);color:var(--color-text-primary)}.nav-link.nav-link-accent.active{background-color:#0000;background-image:linear-gradient(to inline-end, #6d28d957 0%, #2563eb33 100%);color:var(--color-text-primary);border-inline-start-color:#a855f7}.nav-link.active 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.4s}.progress-text{color:var(--color-text-secondary);justify-content:space-between;font-size:.8rem;display:flex}.lesson-list{background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;overflow:hidden}.lesson-row{border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;padding:15px 20px;display:flex}.lesson-row:last-child{border-bottom:none}.lesson-title-area{align-items:center;gap:15px;display:flex}.lesson-number{background-color:var(--color-surface-2);width:30px;height:30px;color:var(--color-text-secondary);border-radius:50%;justify-content:center;align-items:center;font-weight:700;display:flex}.lesson-action{color:var(--color-secondary);font-weight:700}.theme-toggle{border:1px solid var(--color-border);background:var(--color-surface-2);width:40px;height:40px;color:var(--color-text-primary);cursor:pointer;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:1.1rem;transition:all .2s;display:flex}.theme-toggle:hover{background:var(--color-border);transform:rotate(20deg)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--color-background)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-secondary)}.course-info-card{position:sticky;top:90px}.auth-split-wrapper{width:100%;min-height:100vh;font-family:Cairo,sans-serif;display:flex}.auth-form-side{background-color:#fff;flex-direction:column;flex:50%;justify-content:center;align-items:center;min-height:100vh;padding:40px 5%;display:flex;position:relative}.auth-hero-side{background:linear-gradient(135deg,#0a192f 0%,#0d2d5e 50%,#0056d2 100%);flex:50%;justify-content:center;align-items:flex-end;min-height:100vh;display:flex;position:relative;overflow:hidden}@media 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#00000040!important}.sidebar-collapsed-mobile{visibility:hidden!important;opacity:0!important;width:0!important;overflow:hidden!important;transform:translate(100%)!important}.sidebar-open-mobile{visibility:visible!important;opacity:1!important;width:260px!important;transform:translate(0)!important}.mobile-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:9999;background-color:#00000080;position:fixed;inset:0}.premium-navbar,.navbar{height:62px!important;padding:0 14px!important}.main-content{padding:14px 10px!important}.course-grid{grid-template-columns:1fr!important;gap:16px!important}.page-header{flex-direction:column;align-items:flex-start;gap:10px}}.home{--home-header:65px;--home-stage:radial-gradient(600px 300px at 90% 0%, #22d3ee40, transparent 60%), radial-gradient(500px 300px at 0% 100%, #3b82f64d, transparent 60%), #050a15;background-color:var(--color-background);flex-direction:column;min-height:100vh;display:flex}.home main{flex:1}.brand-mark{color:#fff;background:linear-gradient(135deg,#06b6d4 0%,#2563eb 100%);border-radius:28%;flex:none;justify-content:center;align-items:center;display:inline-flex;box-shadow:0 4px 14px #2563eb4d}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.home-btn{white-space:nowrap;cursor:pointer;border:1px solid #0000;border-radius:14px;justify-content:center;align-items:center;gap:10px;min-height:52px;padding:0 26px;font-family:inherit;font-size:1rem;font-weight:700;line-height:1.2;text-decoration:none;transition:transform .2s,box-shadow .2s,background-color .2s,border-color .2s,filter .2s;display:inline-flex}.home-btn:hover{text-decoration:none;transform:translateY(-2px)}.home-btn:active{transform:translateY(0)scale(.98)}.home-btn:focus-visible{outline-offset:3px;outline:3px solid #67e8f9}.home-btn--primary,.home-btn--primary:hover{color:#04121f;background:linear-gradient(135deg,#22d3ee 0%,#3b82f6 100%);box-shadow:0 10px 30px #22d3ee40}.home-btn--primary:hover{filter:brightness(1.08);box-shadow:0 14px 36px #22d3ee59}.home-btn--glass,.home-btn--glass:hover{color:#fff}.home-btn--glass{background-color:#ffffff0f;border-color:#ffffff38}.home-btn--glass:hover{background-color:#ffffff1f;border-color:#ffffff73}.home-btn--solid,.home-btn--solid:hover{color:#fff;background-color:var(--btn-bg)}.home-btn--solid:hover{filter:brightness(1.15);box-shadow:var(--shadow-md)}.home-btn--small{border-radius:10px;gap:8px;min-height:40px;padding:0 16px;font-size:.9rem}.home-hero{--hero-fade:150px;padding:96px 6% calc(var(--hero-fade) + 32px);color:#fff;background:radial-gradient(900px 520px at 85% 15%,#22d3ee29,#0000 60%),radial-gradient(800px 520px at 10% 90%,#3b82f633,#0000 60%),#050a15;position:relative;overflow:hidden}.home-hero:before{content:"";pointer-events:none;background-image:linear-gradient(#ffffff0b 1px,#0000 1px),linear-gradient(90deg,#ffffff0b 1px,#0000 1px);background-size:56px 56px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(80% 70% at 50% 40%,#000 35%,#0000 80%);mask-image:radial-gradient(80% 70% at 50% 40%,#000 35%,#0000 80%)}.home-hero:after{content:"";height:var(--hero-fade);background:linear-gradient(to bottom, transparent 0%, color-mix(in srgb, var(--color-background) 6%, transparent) 20%, color-mix(in srgb, var(--color-background) 22%, transparent) 40%, color-mix(in srgb, var(--color-background) 50%, transparent) 60%, color-mix(in srgb, var(--color-background) 80%, transparent) 80%, var(--color-background) 100%);pointer-events:none;position:absolute;bottom:0;left:0;right:0}.home-hero__inner{z-index:1;grid-template-columns:1.15fr .85fr;align-items:center;gap:56px;max-width:1200px;margin:0 auto;display:grid;position:relative}.home-hero__copy{flex-direction:column;align-items:flex-start;gap:22px;min-width:0;display:flex}.home-eyebrow{color:#a5f3fc;background-color:#22d3ee1a;border:1px solid #22d3ee4d;border-radius:999px;align-items:center;gap:8px;padding:7px 14px;font-size:.85rem;font-weight:700;display:inline-flex}.home-hero__title{color:#fff;text-wrap:balance;flex-direction:column;gap:4px;font-size:clamp(2.2rem,4.6vw,3.7rem);font-weight:800;line-height:1.3;display:flex}.home-hero__title-accent{background:linear-gradient(90deg,#67e8f9 0%,#60a5fa 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.home-hero__lead{text-wrap:pretty;color:#e2e8f0bf;max-width:560px;font-size:1.15rem;line-height:1.9}.home-hero__ctas{flex-wrap:wrap;gap:14px;margin-top:6px;display:flex}.home-hero__stats{flex-wrap:wrap;gap:14px;margin-top:12px;list-style:none;display:flex}.home-hero__stats li{background-color:#ffffff0a;border:1px solid #ffffff1a;border-radius:16px;align-items:center;gap:12px;padding-block:12px;padding-inline:14px 22px;display:flex}.home-hero__stat-icon{color:#fde68a;background-color:#facc151f;border-radius:12px;justify-content:center;align-items:center;width:42px;height:42px;display:flex}.home-hero__stats strong{color:#fff;font-size:1.35rem;font-weight:800;line-height:1.2;display:inline-block}.home-hero__stats small{color:#e2e8f0b3;font-size:.85rem;display:block}.home-hero__visual{justify-content:center;display:flex}.home-orbit{width:340px;height:340px;position:relative}.home-orbit__glow{filter:blur(24px);background:radial-gradient(circle,#22d3ee4d 0%,#3b82f61f 40%,#0000 70%);border-radius:50%;animation:6s ease-in-out infinite home-breathe;position:absolute;inset:-18%}.home-orbit__ring{border:1.5px dashed #67e8f959;border-radius:50%;animation:40s linear infinite home-spin;position:absolute;inset:0}.home-orbit__ring--inner{border:1px solid #ffffff14;animation:none;inset:14%}.home-orbit__core{color:#67e8f9;background:radial-gradient(circle at 35% 30%,#22d3ee38,#050a15f2 70%);border:1px solid #67e8f973;border-radius:50%;justify-content:center;align-items:center;display:flex;position:absolute;inset:24%;box-shadow:0 0 60px #22d3ee40,inset 0 0 40px #22d3ee1f}.home-orbit__core svg{filter:drop-shadow(0 0 14px #22d3ee8c);width:46%;height:46%}.home-orbit__node{color:#a5f3fc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background-color:#0f172acc;border:1px solid #67e8f94d;border-radius:18px;justify-content:center;align-items:center;width:62px;height:62px;margin:-31px;animation:5s ease-in-out infinite home-float;display:flex;position:absolute;box-shadow:0 10px 30px #0006,0 0 24px #22d3ee1f}.home-orbit__node[data-spot=top]{top:0;left:50%}.home-orbit__node[data-spot=end]{top:50%;left:100%}.home-orbit__node[data-spot=bottom]{top:100%;left:50%}.home-orbit__node[data-spot=start]{top:50%;left:0}@keyframes home-spin{to{transform:rotate(360deg)}}@keyframes home-float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes home-breathe{0%,to{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.06)}}@keyframes home-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}.home-section{width:100%;max-width:1248px;scroll-margin-top:var(--home-header);margin:0 auto;padding:96px 24px 0}.home-section--last{padding-bottom:96px}.home-band{background-color:var(--color-surface);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);scroll-margin-top:var(--home-header);margin-top:96px}.home-band>.home-section{padding-top:88px;padding-bottom:88px}.home-section__head{text-align:center;flex-direction:column;align-items:center;gap:10px;max-width:640px;margin:0 auto 48px;display:flex}.home-kicker{color:var(--color-secondary);background-color:color-mix(in srgb, var(--color-secondary) 12%, transparent);border-radius:999px;padding:5px 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