:root{--bg:#ffffff;--panel:#f6f9ff;--surface:#eef3ff;--ink:#0b1f47;--ink-70:rgba(11,31,71,0.70);--ink-55:rgba(11,31,71,0.55);--ink-50:rgba(11,31,71,0.50);--muted:#5a6b8c;--hairline:rgba(11,31,71,0.12);--overlay:rgba(11,31,71,0.05);--accent:#1e6bff;--accent2:#0b3aa8;--accent-text:#155ce8;--grad-from:#b84dff;--grad-to:#1fc8ff;--primary:#1e6bff;--primary-dark:#0b3aa8;--ok:#047857;--ok-bg:rgba(4,120,87,0.08);--warn:#b45309;--err:#b91c1c;--err-bg:rgba(185,28,28,0.06);--shadow-sm:0 1px 2px rgba(11,31,71,0.06);--shadow-md:0 4px 20px rgba(11,31,71,0.08);--shadow-lg:0 10px 40px rgba(11,31,71,0.10);--radius-sm:0.375rem;--radius-md:0.5rem;--radius-lg:0.75rem;--radius-xl:1rem;--radius-2xl:1.5rem;--central-primary:var(--accent);--central-accent:var(--accent);--bg-light:var(--surface);--radius-pill:50rem}[data-bs-theme=dark],[data-theme=dark]{--bg:#070c18;--panel:#0d1730;--surface:#132244;--ink:#eaf4ff;--ink-70:rgba(234,244,255,0.70);--ink-55:rgba(234,244,255,0.55);--ink-50:rgba(234,244,255,0.50);--muted:#93b0d6;--hairline:rgba(34,200,255,0.22);--overlay:rgba(255,255,255,0.06);--accent:#1fc8ff;--accent2:#b84dff;--accent-text:#1fc8ff;--primary:#1fc8ff;--primary-dark:#b84dff;--ok:#34d399;--ok-bg:rgba(52,211,153,0.10);--warn:#fbbf24;--err:#f87171;--err-bg:rgba(248,113,113,0.10);--shadow-sm:0 1px 2px rgba(0,0,0,0.20);--shadow-md:0 4px 20px rgba(0,0,0,0.25);--shadow-lg:0 10px 40px rgba(0,0,0,0.30);--central-primary:var(--accent);--central-accent:var(--accent);--bg-light:var(--surface)}.dropdown-menu{box-shadow:0 .5rem 1.5rem rgba(0,0,0,.08);border-color:var(--hairline);border-radius:.625rem}[data-bs-theme=dark] .dropdown-menu,[data-theme=dark] .dropdown-menu{background:var(--panel);border-color:var(--hairline)}[data-bs-theme=dark] .dropdown-menu .dropdown-item,[data-theme=dark] .dropdown-menu .dropdown-item{color:var(--ink)}[data-bs-theme=dark] .dropdown-menu .dropdown-item:focus,[data-bs-theme=dark] .dropdown-menu .dropdown-item:hover,[data-theme=dark] .dropdown-menu .dropdown-item:focus,[data-theme=dark] .dropdown-menu .dropdown-item:hover{background:rgba(31,200,255,.16);color:var(--ink)}[data-bs-theme=dark] .dropdown-menu .dropdown-item.active,[data-theme=dark] .dropdown-menu .dropdown-item.active{background:#1fc8ff;color:#070c18}[data-bs-theme=dark] table,[data-theme=dark] table{--table-bg:transparent;--table-hover-bg:rgba(31,200,255,.08)}[data-bs-theme=dark] th,[data-theme=dark] th{border-bottom-color:rgba(34,200,255,.22)}[data-bs-theme=dark] .breadcrumb,[data-bs-theme=dark] .breadcrumb a,[data-theme=dark] .breadcrumb,[data-theme=dark] .breadcrumb a{color:var(--ink)}[data-bs-theme=dark] .modal-content,[data-bs-theme=dark] .popover,[data-theme=dark] .modal-content,[data-theme=dark] .popover{background:var(--panel);color:var(--ink);border-color:var(--hairline)}[data-bs-theme=dark] .popover-header,[data-theme=dark] .popover-header{background:var(--surface);color:var(--ink)}.eb-gradient{background:linear-gradient(90deg,var(--grad-from),var(--grad-to))}.eb-gradient-text{background:linear-gradient(90deg,var(--accent2),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--ink);scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}:focus-visible{outline-color:var(--accent);outline-offset:2px}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:rgba(30,107,255,.35);border-radius:5px}::-webkit-scrollbar-thumb:hover{background:rgba(30,107,255,.55)}[data-bs-theme=dark] ::-webkit-scrollbar-thumb,[data-theme=dark] ::-webkit-scrollbar-thumb{background:rgba(31,200,255,.35)}[data-bs-theme=dark] ::-webkit-scrollbar-thumb:hover,[data-theme=dark] ::-webkit-scrollbar-thumb:hover{background:rgba(31,200,255,.55)}html[dir=rtl]{direction:rtl;text-align:right}html[dir=ltr]{direction:ltr;text-align:left}a{color:inherit;text-decoration:none}.container{max-width:1140px;margin:0 auto;padding:0 1.875rem}.nav{background:rgba(255,255,255,.8);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--hairline);position:-webkit-sticky;position:sticky;top:0;z-index:100;padding:env(safe-area-inset-top) 0 0}[data-bs-theme=dark] .nav,[data-theme=dark] .nav{background:rgba(7,12,24,.8)}.nav-inner{max-width:72rem;margin:0 auto;padding:0 1.25rem;height:64px;gap:20px}.brand,.nav-inner{display:flex;align-items:center}.brand{font-weight:800;font-size:18px;color:var(--ink);text-decoration:none;letter-spacing:-.025em;gap:8px}.brand-text-gradient{background:linear-gradient(90deg,var(--accent2),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-weight:800}.nav-links{display:flex;gap:16px;margin-left:auto;align-items:center}.nav-links a{color:var(--ink);text-decoration:none;font-size:14px;font-weight:500;transition:color .2s}.nav-links a:hover{color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;border-radius:.75rem;border:1px solid transparent;background:linear-gradient(90deg,var(--grad-from),var(--grad-to));color:#080f1e;font-size:14px;font-weight:700;font-family:inherit;cursor:pointer;text-decoration:none;transition:opacity .15s,transform .15s;white-space:nowrap}.btn:hover{opacity:.9}.btn:focus-visible{box-shadow:0 0 0 .25rem rgba(30,107,255,.35)}[data-bs-theme=dark] .btn:focus-visible,[data-theme=dark] .btn:focus-visible{box-shadow:0 0 0 .25rem rgba(31,200,255,.35)}.btn-ghost{background:var(--panel);color:var(--ink);border-color:var(--hairline)}.btn-ghost:hover{background:var(--surface)}.btn-danger{background:var(--err);color:#fff}.btn[disabled]{opacity:.55;cursor:not-allowed}.btn-outline{background:transparent;color:var(--ink);border:1px solid var(--hairline)}.btn-outline:hover{background:var(--overlay)}.card{background:var(--panel);border:1px solid var(--hairline);border-radius:1rem;padding:24px;margin-bottom:20px;transition:border-color .15s,box-shadow .2s,transform .2s;box-shadow:0 .25rem 1.5rem rgba(11,31,71,.06)}.card:hover{border-color:rgba(30,107,255,.25);box-shadow:0 .5rem 2rem rgba(11,31,71,.1)}[data-bs-theme=dark] .card:hover,[data-theme=dark] .card:hover{border-color:rgba(31,200,255,.25)}.card-header{background:rgba(30,107,255,.06);border-bottom:1px solid var(--hairline)}[data-bs-theme=dark] .card-header,[data-theme=dark] .card-header{background:var(--surface)}.card h2,.card h3{margin-top:0}.field{margin-bottom:16px}.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink-55)}.field input,.field select,.field textarea{width:100%;padding:10px 14px;border:1px solid var(--hairline);border-radius:.75rem;font-size:14px;font-family:inherit;background:var(--bg);color:var(--ink);transition:border-color .15s,box-shadow .15s;outline:none}[data-bs-theme=dark] .field input,[data-bs-theme=dark] .field select,[data-bs-theme=dark] .field textarea,[data-theme=dark] .field input,[data-theme=dark] .field select,[data-theme=dark] .field textarea{background:var(--surface);border-color:var(--hairline);color:var(--ink)}[data-bs-theme=dark] .field input::placeholder,[data-bs-theme=dark] .field textarea::placeholder,[data-theme=dark] .field input::placeholder,[data-theme=dark] .field textarea::placeholder{color:var(--muted)}[data-bs-theme=dark] .input-group-text,[data-theme=dark] .input-group-text{background:var(--surface);border-color:var(--hairline);color:var(--ink)}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 .2rem rgba(30,107,255,.15)}[data-bs-theme=dark] .field input:focus,[data-bs-theme=dark] .field select:focus,[data-bs-theme=dark] .field textarea:focus,[data-theme=dark] .field input:focus,[data-theme=dark] .field select:focus,[data-theme=dark] .field textarea:focus{border-color:#1fc8ff;box-shadow:0 0 0 .2rem rgba(31,200,255,.25)}.field textarea{min-height:120px;resize:vertical}table{width:100%;border-collapse:collapse;font-size:14px}td,th{text-align:start;padding:10px 12px;border-bottom:1px solid var(--line)}th{color:var(--muted)}.badge,th{font-weight:600}.badge{display:inline-block;padding:3px 10px;border-radius:var(--radius-pill);font-size:12px;background:var(--surface);color:var(--accent-text)}.error{background:var(--err-bg);border:1px solid rgba(185,28,28,.15);color:var(--err);border-radius:.75rem}.error,.notice{padding:10px 14px;font-size:13px;margin-bottom:16px}.notice{background:var(--ok-bg);border:1px solid rgba(4,120,87,.15);color:var(--ok);border-radius:.75rem}.muted{color:var(--muted)}.small{font-size:13px}.empty{text-align:center;color:var(--muted);padding:60px 0}.hero{padding:80px 0 60px;background:var(--bg);color:var(--ink);overflow:hidden;position:relative}.hero:before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(1100px 520px at 12% -6%,rgba(30,107,255,.18),transparent 60%),radial-gradient(1000px 560px at 96% 4%,rgba(11,58,168,.16),transparent 62%),radial-gradient(1000px 760px at 50% 118%,rgba(11,58,168,.1),transparent 60%)}[data-bs-theme=dark] .hero:before,[data-theme=dark] .hero:before{background:radial-gradient(1100px 520px at 12% -6%,rgba(31,200,255,.15),transparent 60%),radial-gradient(1000px 560px at 96% 4%,rgba(184,77,255,.14),transparent 62%),radial-gradient(1000px 760px at 50% 118%,rgba(184,77,255,.08),transparent 60%)}.hero h1{font-size:clamp(2.25rem,5vw,3.75rem);font-weight:800;margin:0 0 16px;color:var(--ink);letter-spacing:-.025em;line-height:1.05}.hero p{font-size:clamp(1rem,2vw,1.25rem);color:var(--ink-55);max-width:560px;margin:0 auto 32px;line-height:1.7}.hero .btn{min-width:189px;height:52px}.stats-row{display:flex;justify-content:center;gap:0;padding:30px 0;background:var(--panel);border:1px solid var(--hairline);border-radius:1rem;margin-top:-30px;position:relative;z-index:2}.stat-item{flex:1 1;text-align:center;padding:20px;-webkit-border-start:1px solid var(--hairline);border-inline-start:1px solid var(--hairline)}.stat-item:first-child{-webkit-border-start:none;border-inline-start:none}.stat-number{font-size:2rem;font-weight:800;letter-spacing:-.025em;background:linear-gradient(90deg,var(--accent2),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{font-size:.875rem;color:var(--ink-50);margin-top:4px}.features-section{padding:80px 0}.features-section,[data-bs-theme=dark] .features-section,[data-theme=dark] .features-section{background:var(--bg)}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:0;gap:0}@media (max-width:768px){.features-grid{grid-template-columns:1fr}}.feature-card{padding:2rem 1.25rem 2.5rem;text-align:center;border-bottom:1px solid var(--hairline);-webkit-border-start:1px solid var(--hairline);border-inline-start:1px solid var(--hairline);transition:all .4s cubic-bezier(.4,0,.2,1)}[data-bs-theme=dark] .feature-card,[data-theme=dark] .feature-card{border-color:var(--hairline)}.feature-card:hover{transform:translateY(-12px) scale(1.02);border-color:transparent;box-shadow:0 25px 50px -12px rgba(0,0,0,.18);z-index:20;position:relative}.feature-icon{width:56px;height:56px;border-radius:50%;background:rgba(30,107,255,.08);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:24px;color:var(--primary)}[data-bs-theme=dark] .feature-icon,[data-theme=dark] .feature-icon{background:rgba(31,200,255,.12);color:#1fc8ff}.feature-card h3{font-size:clamp(1.125rem,2.2vw,1.5rem);margin-bottom:8px;font-family:var(--font-heading);color:var(--ink)}.feature-card p{font-size:.9375rem;line-height:1.65;color:var(--muted);margin:0}.section-title{text-align:center;margin-bottom:48px}.section-title h2{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:800;color:var(--ink);margin-bottom:12px;font-family:var(--font-heading)}.section-title p{font-size:1.125rem;color:var(--muted);max-width:560px;margin:0 auto}.pricing-section{padding:80px 0;background:var(--accent)}.pricing-grid{display:flex;justify-content:center;gap:2rem;max-width:960px;margin:0 auto;flex-wrap:wrap}.pricing-card{flex:1 1;min-width:280px;max-width:320px;background:var(--panel);border-radius:var(--radius-lg);padding:2rem;box-shadow:0 4px 24px rgba(0,0,0,.08);text-align:center;display:flex;flex-direction:column}[data-bs-theme=dark] .pricing-card,[data-theme=dark] .pricing-card{background:var(--panel);box-shadow:0 4px 24px rgba(0,0,0,.25)}.pricing-card.featured{border:2px solid var(--primary);transform:scale(1.05)}.pricing-card h3{font-size:1.25rem;font-weight:700}.pricing-card .price,.pricing-card h3{margin-bottom:.5rem;font-family:var(--font-heading)}.pricing-card .price{font-size:2.5rem;font-weight:800;color:var(--primary)}.pricing-card .price span{font-size:.5em;color:var(--muted)}.pricing-card .desc{color:var(--muted);font-size:.875rem;margin-bottom:1.5rem}.pricing-features{list-style:none;padding:0;margin:0 0 2rem;text-align:start;flex:1 1}.pricing-features li{padding:6px 0;font-size:.9375rem;display:flex;align-items:center;gap:8px}.pricing-features li:before{content:"\2713";color:var(--ok);font-weight:700}.faq-section{padding:80px 0;background:var(--primary)}.faq-section .section-title h2{color:#fff}.faq-section .section-title p{color:rgba(255,255,255,.8)}.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:1rem}.faq-item{border-radius:var(--radius-lg);overflow:hidden}.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:1.25rem 1.5rem;background:rgba(255,255,255,.1);color:#fff;border:none;cursor:pointer;text-align:start;font-size:1rem;font-weight:600;font-family:var(--font-heading);transition:background .2s}.faq-question:hover{background:rgba(255,255,255,.15)}.faq-answer{background:rgba(255,255,255,.05);color:rgba(255,255,255,.9);padding:0 1.5rem;max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;font-size:.9375rem;line-height:1.65}.faq-item.open .faq-answer{max-height:320px;padding:1rem 1.5rem 1.25rem}.faq-icon{transition:transform .25s;font-size:1.2rem}.faq-item.open .faq-icon{transform:rotate(180deg)}:root{--footer-wave-top:90px}.footer{position:relative;z-index:1}.footer,[data-bs-theme=dark] .footer,[data-theme=dark] .footer{background:var(--bg)}.footer:after{content:"";position:absolute;left:0;right:0;top:var(--footer-wave-top);bottom:0;background:var(--accent);z-index:-1}.footer .footer-bg-wave{display:block;width:100%;height:auto;position:absolute;top:0;left:0;z-index:1;mix-blend-mode:screen}.footer .footer-inner{position:relative;z-index:2;padding-top:calc(var(--footer-wave-top) + clamp(3rem, 6vw, 5rem));padding-bottom:2rem}.footer .footer-grid{display:grid;grid-template-columns:1.35fr .85fr .85fr 1.15fr;grid-gap:2rem;gap:2rem}@media (max-width:1024px){.footer .footer-grid{grid-template-columns:1fr 1fr}}@media (max-width:600px){.footer .footer-grid{grid-template-columns:1fr}}.footer .footer-logo{width:164px;height:auto;margin-bottom:1rem}.footer .footer-about{font-family:var(--font-heading);color:var(--ink);font-size:.9375rem;line-height:1.7;max-width:28rem;margin:0}.footer .footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.85rem}.footer .footer-links a,.footer .footer-links li{font-family:var(--font-heading);font-size:1rem;color:var(--ink);text-decoration:none;transition:color .2s}.footer .footer-links a:hover{color:var(--primary)}.footer .footer-contact li{font-family:var(--font-heading);font-size:.9375rem;color:var(--ink);display:flex;align-items:flex-start;gap:8px}.footer .footer-contact i{color:var(--primary);margin-top:4px;min-width:16px}.footer .footer-social{display:flex;gap:12px;margin-top:4px}.footer .footer-social a{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;transition:background .2s}.footer .footer-social a:hover{background:var(--primary-dark)}.footer h4{font-family:var(--font-heading);font-size:1.05rem;font-weight:700;margin-bottom:1.25rem;color:var(--ink)}.footer .footer-copy{border-top:1px solid var(--hairline);margin-top:3rem;padding-top:1.5rem;text-align:center;font-family:var(--font-heading);font-size:.9375rem;color:var(--muted)}.footer .footer-copy-accent{color:#ff9900;font-weight:700}.layout-sidebar{display:flex;min-height:calc(100vh - 60px)}.sidebar{width:260px;background:#fff;-webkit-border-end:1px solid var(--line);border-inline-end:1px solid var(--line);padding:20px 0;flex-shrink:0;overflow-y:auto}[data-bs-theme=dark] .sidebar{background:var(--panel);border-color:var(--hairline)}.sidebar-link{display:flex;align-items:center;gap:12px;padding:10px 20px;color:var(--ink);text-decoration:none;font-size:14px;font-weight:500;transition:background .15s,color .15s}.sidebar-link:hover{background:rgba(30,107,255,.18);color:var(--primary)}[data-bs-theme=dark] .sidebar-link:hover,[data-theme=dark] .sidebar-link:hover{background:rgba(31,200,255,.12);color:#1fc8ff}.sidebar-link.active{background:rgba(30,107,255,.12);color:var(--primary);font-weight:600}[data-bs-theme=dark] .sidebar-link.active,[data-theme=dark] .sidebar-link.active{background:rgba(31,200,255,.16);color:#1fc8ff}.sidebar-link i{width:20px;text-align:center;font-size:16px}.sidebar-section{padding:16px 20px 8px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.sidebar-content{flex:1 1;padding:24px;overflow-x:auto}.sidebar-content,[data-bs-theme=dark] .sidebar-content,[data-theme=dark] .sidebar-content{background:var(--panel)}@media (max-width:768px){.layout-sidebar{flex-direction:column}.sidebar{width:100%;-webkit-border-end:none;border-inline-end:none;border-bottom:1px solid var(--line)}}.landing-page{overflow-x:hidden}.grid{display:grid;grid-gap:20px;gap:20px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width:768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.progressbar{height:8px;background:var(--surface);overflow:hidden}.progressbar,.progressbar>div{border-radius:var(--radius-pill)}.progressbar>div{height:100%;background:var(--primary);transition:width .3s ease}.stars{color:#f59e0b;letter-spacing:1px}.review{border-bottom:1px solid var(--line);padding:14px 0}.review:last-child{border-bottom:none}.certificate-card{border:2px solid var(--primary);border-radius:var(--radius-lg);padding:32px;text-align:center;max-width:680px;margin:0 auto}.certificate-card,[data-bs-theme=dark] .certificate-card,[data-theme=dark] .certificate-card{background:var(--panel)}.sidebar-layout{display:grid;grid-template-columns:1fr 320px;grid-gap:24px;gap:24px}@media (max-width:860px){.sidebar-layout{grid-template-columns:1fr}}.instructor-page{max-width:1080px;margin:0 auto;padding:32px 20px 48px}.instructor-page__header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:32px}.instructor-page__title{font-size:1.75rem;font-weight:700;color:var(--ink);margin:4px 0}.instructor-page__subtitle{font-size:14px;color:var(--muted);margin:0}.instructor-stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:16px;gap:16px;margin-bottom:32px}.instructor-stats__card{background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);padding:20px;display:flex;align-items:center;gap:16px}[data-bs-theme=dark] .instructor-stats__card,[data-theme=dark] .instructor-stats__card{background:var(--panel);border-color:var(--hairline)}.instructor-stats__card--featured{border-color:#ff9900;background:linear-gradient(135deg,rgba(255,170,0,.05),rgba(255,170,0,.02))}.instructor-stats__icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.instructor-stats__info{display:flex;flex-direction:column}.instructor-stats__number{font-size:1.35rem;font-weight:700;color:var(--ink)}.instructor-stats__label{font-size:12px;color:var(--muted);margin-top:2px}.instructor-section{margin-bottom:32px}.instructor-section__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.instructor-section__title{font-size:1.15rem;font-weight:700;color:var(--ink);margin:0}.instructor-courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));grid-gap:16px;gap:16px}.instructor-course-card{background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);padding:20px}[data-bs-theme=dark] .instructor-course-card,[data-theme=dark] .instructor-course-card{background:var(--panel);border-color:var(--hairline)}.instructor-course-card__top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px}.instructor-course-card__title{font-weight:600;font-size:15px}.instructor-course-card__title a{color:var(--ink);text-decoration:none}.instructor-course-card__title a:hover{color:var(--primary)}.instructor-course-card__metrics{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.instructor-course-card__metric{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.instructor-course-card__metric i{width:14px;text-align:center;color:var(--primary)}[data-bs-theme=dark] .instructor-course-card__metric i,[data-theme=dark] .instructor-course-card__metric i{color:#1fc8ff}.instructor-course-card__actions{display:flex;gap:8px;flex-wrap:wrap}.instructor-table{width:100%;border-collapse:collapse}.instructor-table th{text-align:left;font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;padding:12px 16px;border-bottom:2px solid var(--hairline)}.instructor-table td{padding:12px 16px;font-size:14px;border-bottom:1px solid var(--hairline);color:var(--ink)}.instructor-table tr:last-child td{border-bottom:none}.instructor-table tr:hover td{background:rgba(30,107,255,.02)}[data-bs-theme=dark] .instructor-table tr:hover td,[data-theme=dark] .instructor-table tr:hover td{background:rgba(31,200,255,.04)}.gradebook-cell{display:flex;align-items:center;gap:10px}.btn-sm{padding:6px 12px;font-size:13px}.badge--success{background:rgba(4,120,87,.1);color:var(--ok)}.badge--warning{background:rgba(180,83,9,.1);color:var(--warn)}.badge--muted{background:var(--surface);color:var(--muted)}[data-bs-theme=dark] .badge--success,[data-theme=dark] .badge--success{background:rgba(52,211,153,.12);color:#34d399}[data-bs-theme=dark] .badge--warning,[data-theme=dark] .badge--warning{background:rgba(251,191,36,.12);color:#fbbf24}[data-bs-theme=dark] .badge--muted,[data-theme=dark] .badge--muted{background:var(--surface);color:var(--muted)}@media (max-width:768px){.instructor-stats{grid-template-columns:1fr 1fr}.instructor-page__header{flex-direction:column}}@media (max-width:480px){.instructor-stats{grid-template-columns:1fr}}.course-player{display:grid;grid-template-columns:1fr 340px;grid-gap:0;gap:0;max-width:1280px;margin:0 auto;min-height:calc(100vh - 64px)}.course-player__main{padding:28px 32px 48px;max-width:820px}.course-player__back{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--muted);text-decoration:none;margin-bottom:20px;transition:color .2s}.course-player__back:hover{color:var(--primary)}.course-player__lesson-header{margin-bottom:20px}.course-player__lesson-badge{display:inline-block;font-size:12px;font-weight:600;color:var(--primary);background:rgba(30,107,255,.08);padding:4px 12px;border-radius:20px;margin-bottom:10px}[data-bs-theme=dark] .course-player__lesson-badge,[data-theme=dark] .course-player__lesson-badge{background:rgba(31,200,255,.12);color:#1fc8ff}.course-player__lesson-title{font-size:1.75rem;font-weight:700;color:var(--ink);margin:0;line-height:1.3}.course-player__video{margin-bottom:24px;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06)}.course-player__content{background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);padding:28px 32px;line-height:1.8;font-size:15px;color:var(--ink);margin-bottom:32px}[data-bs-theme=dark] .course-player__content,[data-theme=dark] .course-player__content{background:var(--panel);border-color:var(--hairline)}.course-player__content p{margin:0 0 14px}.course-player__content p:last-child{margin-bottom:0}.course-player__content h1,.course-player__content h2,.course-player__content h3,.course-player__content h4{margin:24px 0 12px;color:var(--ink)}.course-player__content h1{font-size:1.5rem}.course-player__content h2{font-size:1.3rem}.course-player__content h3{font-size:1.1rem}.course-player__content ol,.course-player__content ul{margin:0 0 14px;padding-left:24px}.course-player__content li{margin-bottom:6px}.course-player__content pre{background:#1a1a2e;color:#e0e0e0;padding:16px 20px;border-radius:8px;overflow-x:auto;font-size:13px;line-height:1.6;margin:0 0 14px}.course-player__content code{font-family:JetBrains Mono,monospace;font-size:.9em}.course-player__content :not(pre)>code{background:rgba(30,107,255,.06);padding:2px 8px;border-radius:4px;color:var(--primary)}[data-bs-theme=dark] .course-player__content :not(pre)>code,[data-theme=dark] .course-player__content :not(pre)>code{background:rgba(31,200,255,.12);color:#1fc8ff}.course-player__content blockquote{border-left:3px solid var(--primary);margin:0 0 14px;padding:12px 20px;background:rgba(30,107,255,.03);border-radius:0 8px 8px 0;color:var(--muted)}[data-bs-theme=dark] .course-player__content blockquote,[data-theme=dark] .course-player__content blockquote{background:rgba(31,200,255,.06)}.course-player__content hr{border:none;border-top:1px solid var(--line);margin:24px 0}.course-player__content a{color:var(--primary);font-weight:500}.course-player__content a:hover{text-decoration:underline}.course-player__nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:20px;border-top:1px solid var(--line)}.course-player__nav-side{flex:1 1;min-width:0}.course-player__nav-side--right{text-align:right}.course-player__nav .btn{max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-player__sidebar{border-left:1px solid var(--hairline);background:var(--panel);height:100vh;position:-webkit-sticky;position:sticky;top:64px;overflow-y:auto}[data-bs-theme=dark] .course-player__sidebar,[data-theme=dark] .course-player__sidebar{background:var(--panel);border-color:var(--hairline)}.course-player-empty{text-align:center;padding:80px 20px}.course-player-empty__icon{font-size:48px;color:var(--muted);margin-bottom:16px}.course-outline{padding:20px}.course-outline__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.course-outline__title{font-size:1rem;font-weight:700;color:var(--ink);margin:0}.course-outline__toggle{background:none;border:1px solid var(--hairline);border-radius:6px;width:30px;height:30px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--muted);font-size:12px}.course-outline__stats{font-size:13px;color:var(--muted);margin:0 0 8px}.course-outline__certificate{background:linear-gradient(135deg,#ffd700,#ffaa00);color:#000;padding:10px 14px;border-radius:8px;font-size:13px;font-weight:700;margin-bottom:14px;text-align:center}.course-outline__list{list-style:none;padding:0;margin:0}.course-outline__item{border-bottom:1px solid var(--line)}.course-outline__item:last-child{border-bottom:none}.course-outline__item--active{background:rgba(30,107,255,.06);border-radius:8px}[data-bs-theme=dark] .course-outline__item--active,[data-theme=dark] .course-outline__item--active{background:rgba(31,200,255,.1)}.course-outline__link{display:flex;align-items:center;gap:10px;padding:10px 12px;text-decoration:none;color:var(--ink);font-size:13px;transition:background .15s}.course-outline__link:hover{background:rgba(30,107,255,.06)}[data-bs-theme=dark] .course-outline__link:hover,[data-theme=dark] .course-outline__link:hover{background:rgba(31,200,255,.08)}.course-outline__number{width:24px;height:24px;border-radius:50%;background:var(--surface);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:var(--muted);flex-shrink:0}.course-outline__item--active .course-outline__number{background:var(--primary);color:#fff}.course-outline__item--quiz .course-outline__number{background:transparent;border:1.5px solid var(--primary);color:var(--primary)}.course-outline__info{flex:1 1;min-width:0}.course-outline__name{display:block;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-outline__meta{display:block;font-size:11px;color:var(--muted);margin-top:2px}.course-outline__check{color:var(--success);font-size:14px;flex-shrink:0}.completion-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:9999;opacity:0;transition:opacity .3s}.completion-overlay--show{opacity:1}.completion-modal{background:var(--panel);border-radius:16px;padding:48px 40px;text-align:center;max-width:420px;width:90%;box-shadow:0 20px 60px rgba(0,0,0,.2);transform:scale(.9);transition:transform .3s}[data-bs-theme=dark] .completion-modal,[data-theme=dark] .completion-modal{background:var(--panel);box-shadow:0 20px 60px rgba(0,0,0,.4)}.completion-modal--show{transform:scale(1)}.completion-modal__icon{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,#ffd700,#ffaa00);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:36px;color:#000}.completion-modal__title{font-size:1.5rem;font-weight:700;color:var(--ink);margin:0 0 12px}.completion-modal__text{font-size:15px;color:var(--ink);margin:0 0 8px}.completion-modal__sub{font-size:13px;color:var(--muted);margin:0}@media (max-width:900px){.course-player{grid-template-columns:1fr}.course-player__main{padding:20px 16px 32px}.course-player__sidebar{position:fixed;bottom:0;left:0;right:0;top:auto;height:auto;max-height:50vh;border-left:none;border-top:1px solid var(--line);z-index:100;box-shadow:0 -4px 20px rgba(0,0,0,.1)}.course-player__nav{flex-wrap:wrap;margin-bottom:12px}.course-player__lesson-title{font-size:1.35rem}}.searchbar{display:flex;gap:8px;justify-content:center;max-width:560px;margin:0 auto}.searchbar input{flex:1 1;padding:11px 14px;border:1px solid var(--hairline);border-radius:var(--radius-pill);font-size:15px;outline:none;background:var(--bg);color:var(--ink)}[data-bs-theme=dark] .searchbar input,[data-theme=dark] .searchbar input{background:var(--surface);border-color:var(--hairline);color:var(--ink)}.chiprow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.chip{display:inline-block;padding:6px 14px;border:1px solid var(--hairline);border-radius:var(--radius-pill);font-size:13px;font-weight:600;color:var(--muted);text-decoration:none;background:var(--bg);transition:all .2s}.chip:hover{color:var(--primary)}.chip.active,.chip:hover{border-color:var(--primary)}.chip.active{background:var(--primary);color:#fff}.sortrow{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}.sortrow select{padding:7px 10px;border:1px solid var(--hairline);border-radius:var(--radius-md);font-size:13px;background:var(--bg);color:var(--ink)}[data-bs-theme=dark] .sortrow select,[data-theme=dark] .sortrow select{background:var(--surface);border-color:var(--hairline);color:var(--ink)}.course-card{display:flex;flex-direction:column;padding:0 0 16px;overflow:hidden;margin-bottom:0;transition:border-color .2s,box-shadow .2s}.course-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md)}.course-card>:not(.cover){margin-left:16px;margin-right:16px}.cover{height:140px;margin:0 0 14px;border-bottom:1px solid var(--line)}.cover-fallback{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-size:40px;font-weight:800}.landing-cover{height:220px;border-radius:var(--radius-lg);background-size:cover;background-position:50%}.landing-cover.fallback{background:linear-gradient(135deg,var(--primary),var(--secondary));font-size:64px;font-weight:800}.back-top,.landing-cover.fallback{display:flex;align-items:center;justify-content:center;color:#fff}.back-top{position:fixed;bottom:24px;right:24px;width:44px;height:44px;border-radius:50%;background:var(--primary);border:none;cursor:pointer;font-size:20px;box-shadow:var(--shadow-md);opacity:0;transition:opacity .3s;z-index:99}html[dir=rtl] .back-top{right:auto;left:24px}.back-top.visible{opacity:1}.auth-page{display:grid;grid-template-columns:1fr 1fr;min-height:100vh}@media (max-width:768px){.auth-page{grid-template-columns:1fr}}.auth-brand{background:linear-gradient(160deg,#0b1f47,#1e6bff 45%,#b84dff);color:#fff;padding:3rem;display:flex;flex-direction:column;justify-content:center;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}[data-bs-theme=dark] .auth-brand,[data-theme=dark] .auth-brand{background:linear-gradient(160deg,#070c18,#1fc8ff 45%,#b84dff)}.auth-form-panel{display:flex;align-items:center;justify-content:center;padding:2rem}.auth-form-panel input,.auth-form-panel select,.auth-form-panel textarea{border-radius:.625rem}.auth-form-panel .btn{border-radius:.625rem;background:linear-gradient(90deg,#b84dff,#1fc8ff);border:none;color:#080f1e;font-weight:700}.auth-form-panel .btn:hover{background:linear-gradient(90deg,#a040e0,#18b0e0)}.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));grid-gap:12px;gap:12px}.message-sent{background:var(--primary);color:#fff;border-radius:var(--radius-lg) var(--radius-lg) 4px var(--radius-lg);padding:12px 16px;max-width:70%;-webkit-margin-start:auto;margin-inline-start:auto}.message-received{border-radius:var(--radius-lg) var(--radius-lg) var(--radius-lg) 4px;padding:12px 16px;max-width:70%}.message-received,[data-bs-theme=dark] .message-received,[data-theme=dark] .message-received{background:var(--surface)}.bar-chart{display:flex;flex-direction:column;gap:12px}.bar-row{display:flex;align-items:center;gap:8px}.bar-label{width:200px;font-size:14px}.bar-fill-bg{flex:1 1;height:24px;background:var(--surface);border-radius:4px;overflow:hidden}.bar-fill{height:100%;background:var(--primary);border-radius:4px;transition:width .3s ease}.bar-count{font-size:13px;color:var(--muted);min-width:40px}