@import"https://fonts.googleapis.com/css2?family=Michroma&family=Inter:wght@400;700;900&display=swap";:root{--bg-primary: #000000;--bg-secondary: #050505;--text-primary: #ffffff;--text-secondary: #888888;--accent-cyan: #00f2fe;--accent-pink: #ff0080;--accent-purple: #7000ff;--border: rgba(255, 255, 255, .1);--transition: .6s cubic-bezier(.22, 1, .36, 1);--font-heading: "Michroma", sans-serif;--font-body: "Inter", sans-serif;--primary: var(--accent-cyan);--primary-600: var(--accent-cyan);--primary-50: rgba(0, 242, 254, .1);--secondary: var(--accent-pink);--background: var(--bg-primary);--surface: var(--bg-secondary);--dark-surface: #0a0a0a;--gray-50: rgba(255, 255, 255, .02);--gray-100: rgba(255, 255, 255, .05);--gray-200: rgba(255, 255, 255, .1);--gray-300: rgba(255, 255, 255, .2);--gray-500: #888;--gray-600: #666;--gray-700: 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h2{font-size:clamp(3rem,10vw,8rem)}.auth-page{width:100vw;height:100vh;flex-shrink:0;scroll-snap-align:start;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;padding:2rem}.auth-background{position:absolute;inset:0;background:linear-gradient(135deg,#667eea,#764ba2,#f093fb);z-index:0}.gradient-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.6;animation:float 20s ease-in-out 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#6366f14d}.auth-header h1{font-size:2rem;font-weight:800;margin-bottom:.5rem;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-header p{color:var(--text-secondary);font-size:1rem}.social-login{display:flex;flex-direction:column;gap:.75rem;margin-bottom:2rem}.social-btn{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:.875rem;border:2px solid var(--border);background:var(--surface);border-radius:12px;font-weight:600;color:var(--text-primary);cursor:pointer;transition:all .3s ease;font-size:.95rem}.social-btn:hover{transform:translateY(-2px);box-shadow:0 5px 15px #0000001a}.social-btn.google:hover{border-color:#db4437;background:#db44370d}.social-btn.facebook:hover{border-color:#1877f2;background:#1877f20d}.social-btn.github:hover{border-color:#333;background:#3333330d}.social-btn svg{font-size:1.25rem}.divider{position:relative;text-align:center;margin:2rem 0}.divider:before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:var(--border)}.divider span{position:relative;display:inline-block;padding:0 1rem;background:var(--background);color:var(--text-secondary);font-size:.875rem}.auth-form,.form-group{margin-bottom:1.5rem}.form-group label{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem;font-weight:600;color:var(--text-primary);font-size:.95rem}.form-group label svg{color:var(--primary)}.form-group input{width:100%;padding:.875rem 1rem;border:2px solid var(--border);background:var(--surface);border-radius:12px;font-size:1rem;color:var(--text-primary);transition:all .3s ease}.form-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px 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rgba(255,255,255,.2)}.feature-icon{width:32px;height:32px;background:#fff3;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.125rem}.feature-item span{font-size:.95rem;font-weight:500}@media(max-width:968px){.auth-container{grid-template-columns:1fr;max-width:500px}.auth-side{display:none}.auth-card{padding:2.5rem 2rem}}@media(max-width:576px){.auth-page{padding:1rem}.auth-card{padding:2rem 1.5rem}.auth-header h1{font-size:1.75rem}.form-options{flex-direction:column;align-items:flex-start;gap:.75rem}}@keyframes float{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-30px) rotate(10deg)}}.leaderboard-page{display:flex;height:100vh;background:#000}.leaderboard-header-section{width:100vw;height:100vh;flex-shrink:0;display:flex;flex-direction:column;justify-content:center;padding:0 10vw;background:radial-gradient(circle at top 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var(--border)}.avatar-placeholder{display:flex;align-items:center;justify-content:center;font-size:3rem;color:var(--text-secondary)}.user-name{font-family:var(--font-heading);font-size:1.2rem;text-align:center;color:#fff;letter-spacing:.1em}.points{display:flex;align-items:center;gap:1rem;font-size:1.5rem;font-weight:900;color:#fff;justify-content:center;border-top:1px solid var(--border);padding-top:2rem;width:100%}.points svg{color:gold}@media(max-width:1024px){.leaderboard-page{flex-direction:column;height:auto}.leaderboard-header-section,.leaderboard-content-section{width:100vw;height:auto;padding:10rem 10vw}.leaderboard-list{flex-direction:column;width:100%}.leader-item{width:100%;height:auto}}.profile-page{width:100vw;height:100vh;flex-shrink:0;scroll-snap-align:start;overflow-y:auto;padding:100px 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var(--border);display:flex;gap:2rem;padding:2.5rem;position:relative;overflow:hidden}.certificate-card:after{content:"";position:absolute;top:0;right:0;width:50%;height:100%;background:radial-gradient(circle at top right,rgba(0,242,254,.05),transparent)}.cert-icon{font-size:2.5rem;color:var(--accent-cyan);position:relative;z-index:2}@media(max-width:1024px){.content-grid{grid-template-columns:1fr}.profile-info-main{flex-direction:column;align-items:center;text-align:center}.profile-name-row{flex-direction:column;gap:2rem}}.my-learning-page{width:100vw;height:100vh;flex-shrink:0;scroll-snap-align:start;overflow-y:auto;padding:100px 5vw;background:radial-gradient(circle at top right,rgba(99,102,241,.03),transparent)}.learning-header{margin-bottom:4rem;text-align:center}.learning-header h1{font-size:3rem;font-weight:800;margin-bottom:1rem;background:var(--gradient-primary);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.learning-header p{font-size:1.25rem;color:var(--gray-500)}.learning-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:2.5rem}.learning-card{border-radius:var(--radius-xl);overflow:hidden;transition:all var(--transition-base)}.card-image{position:relative;height:180px}.card-image img{width:100%;height:100%;object-fit:cover}.progress-badge{position:absolute;bottom:1rem;right:1rem;background:#10b981e6;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:#fff;padding:.5rem 1rem;border-radius:var(--radius-full);font-size:.8rem;font-weight:600;display:flex;align-items:center;gap:.5rem}.card-content{padding:2rem}.category-tag{font-size:.75rem;font-weight:700;text-transform:uppercase;color:var(--primary-600);letter-spacing:.05em}.card-content h3{font-size:1.25rem;margin:.75rem 0;line-height:1.4}.card-meta{font-size:.9rem;color:var(--gray-500);margin-bottom:1.5rem;display:flex;align-items:center;gap:1rem}.progress-bar{height:8px;background:var(--gray-100);border-radius:var(--radius-full);margin-bottom:1.5rem;overflow:hidden}.progress-fill{height:100%;background:var(--success-500);border-radius:var(--radius-full)}.empty-learning{text-align:center;padding:5rem 2rem;border-radius:var(--radius-2xl);max-width:600px;margin:0 auto}.empty-icon{font-size:4rem;color:var(--primary-200);margin-bottom:2rem}.empty-learning h2{font-size:2rem;margin-bottom:1rem}.empty-learning p{color:var(--gray-500);margin-bottom:2.5rem;line-height:1.6}.learning-loading{height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem}@media(max-width:768px){.learning-grid{grid-template-columns:1fr}}.learning-actions{display:flex;gap:.75rem}.learning-actions 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p{font-size:1.25rem;color:var(--text-secondary)}.create-lesson-card{background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-xl);padding:3rem;transition:border-color var(--transition)}.create-lesson-card:focus-within{border-color:var(--primary)}.form-section{margin-bottom:3rem}.form-section:last-of-type{margin-bottom:0}.section-title{font-family:var(--font-display);font-size:1.25rem;font-weight:700;margin-bottom:1.5rem;color:var(--text-primary);display:flex;align-items:center;gap:.75rem}.section-title svg{color:var(--primary)}.form-group{margin-bottom:1.5rem}.form-group label{display:block;font-size:.9rem;font-weight:600;color:var(--text-secondary);margin-bottom:.5rem}.form-group input,.form-group textarea,.form-group select{width:100%;padding:.875rem 1rem;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-sans);font-size:1rem;transition:all 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-5px #6366f166}.btn-submit:disabled{opacity:.5;cursor:not-allowed}.success-message{text-align:center;padding:2rem}.success-icon{width:64px;height:64px;background:var(--success);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin:0 auto 1.5rem}.question-item-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:1.5rem}.q-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;font-weight:700;color:var(--text-primary)}.btn-remove-q{background:transparent;border:none;color:var(--error);cursor:pointer;font-size:1rem;opacity:.6}.btn-remove-q:hover{opacity:1}.options-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.option-input-wrap{display:flex;align-items:center;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-md);padding:.5rem .75rem}.option-input-wrap span{font-weight:800;color:var(--primary);margin-right:.75rem}.option-input-wrap input{border:none!important;padding:0!important;background:transparent!important;box-shadow:none!important}.option-input-wrap button{background:transparent;border:none;color:var(--border);cursor:pointer;font-size:1.25rem}.option-input-wrap.is-correct{border-color:var(--success)}.option-input-wrap.is-correct button{color:var(--success)}.label-with-action{display:flex;justify-content:space-between;align-items:center}.inline-action-btn{font-size:.8rem;color:var(--primary);background:transparent;border:none;cursor:pointer;font-weight:600}.inline-add-form{display:flex;gap:.5rem}.create-lesson-bg{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none;overflow:hidden}.bg-orb{position:absolute;border-radius:50%;filter:blur(120px);opacity:.05}.bg-orb-1{width:600px;height:600px;background:var(--primary);top:-200px;left:-200px}.bg-orb-2{width:500px;height:500px;background:var(--accent);bottom:-150px;right:-150px}body.dark-mode .create-lesson-card{background:var(--dark-surface)}body.dark-mode .form-group input,body.dark-mode .form-group textarea,body.dark-mode .form-group select,body.dark-mode .video-mode-selector{background:#1a1a1c}body.dark-mode .video-mode-selector button.active{background:var(--dark-surface)}@keyframes fadeInSlide{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.question-item-card{animation:fadeInSlide .4s ease-out}@media(max-width:640px){.create-lesson-header h1{font-size:2.5rem}.create-lesson-card{padding:1.5rem}.form-row,.options-grid{grid-template-columns:1fr}}.certificate-page-container{width:100vw;min-height:100vh;flex-shrink:0;scroll-snap-align:start;overflow-y:auto;padding:6rem 2rem;display:flex;flex-direction:column;align-items:center;background:var(--bg-primary);position:relative}.cert-page-loading,.cert-page-error{height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;text-align:center}.cert-actions{width:100%;max-width:1000px;display:flex;justify-content:space-between;align-items:center;margin-bottom:3rem;z-index:10}.back-link{display:flex;align-items:center;gap:.75rem;color:var(--text-secondary);font-weight:700;text-transform:uppercase;font-size:.8rem;letter-spacing:.1em;text-decoration:none;transition:color .3s}.back-link:hover{color:var(--accent-cyan)}.certificate-paper{width:1000px;height:700px;background:#000;padding:20px;position:relative;color:#fff;box-shadow:0 0 100px #00f2fe1a;border:1px solid var(--border);overflow:hidden}.certificate-paper:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at center,rgba(0,242,254,.03) 0%,transparent 70%);pointer-events:none}.cert-border{border:2px solid var(--accent-cyan);height:100%;padding:10px;position:relative}.cert-inner-border{border:1px solid rgba(0,242,254,.2);height:100%;padding:60px;display:flex;flex-direction:column;justify-content:space-between;background:#ffffff03}.cert-header{display:flex;justify-content:space-between;align-items:center}.cert-logo{display:flex;align-items:center;gap:1rem;font-family:var(--font-heading);font-size:1.2rem;letter-spacing:.3em;color:#fff}.award-icon{color:var(--accent-cyan);font-size:2rem;filter:drop-shadow(0 0 10px var(--accent-cyan))}.cert-id{font-size:.7rem;color:var(--text-secondary);font-family:monospace;letter-spacing:2px}.cert-content{text-align:center;flex-grow:1;display:flex;flex-direction:column;justify-content:center;gap:2rem}.cert-title{font-family:var(--font-heading);font-size:2.5rem;color:#fff;margin:0;letter-spacing:.5em;text-shadow:0 0 30px rgba(255,255,255,.2)}.cert-intro{font-size:.9rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.3em}.recipient-name{font-size:4rem;color:var(--accent-cyan);font-family:var(--font-heading);margin:1rem 0;text-transform:uppercase;letter-spacing:.1em}.cert-description{font-size:1.1rem;max-width:700px;margin:0 auto;line-height:1.8;color:var(--text-secondary)}.cert-description strong{color:#fff;font-weight:900}.cert-category-path{font-size:.75rem;color:var(--accent-cyan);font-weight:800;text-transform:uppercase;letter-spacing:.4em;opacity:.8}.cert-details{display:flex;justify-content:center;gap:5rem;margin-top:2rem}.detail-item{display:flex;flex-direction:column;gap:.5rem}.detail-item .label{font-size:.6rem;text-transform:uppercase;color:var(--text-secondary);font-weight:800;letter-spacing:.2em}.detail-item .value{font-size:.9rem;font-weight:900;color:#fff}.cert-footer{display:flex;justify-content:space-between;align-items:flex-end;margin-top:3rem}.signature{width:220px;text-align:center}.sig-line{border-bottom:1px solid var(--border);margin-bottom:.75rem;height:40px}.signature p{margin:0;font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.1em}.author-sub{font-size:.6rem!important;color:var(--text-secondary)!important;font-weight:400!important;margin-top:.25rem!important}.cert-stamp{position:absolute;bottom:60px;left:50%;transform:translate(-50%) rotate(-10deg);width:120px;height:120px;border-radius:50%;border:2px dashed rgba(0,242,254,.3);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--accent-cyan);opacity:.6}.cert-stamp svg{font-size:3rem}.cert-stamp span{font-size:.5rem;font-weight:900;letter-spacing:.2em}.cert-footer-info{margin-top:3rem;color:var(--text-secondary);font-size:.7rem;text-transform:uppercase;letter-spacing:.2em}@media print{body *{visibility:hidden}.certificate-paper,.certificate-paper *{visibility:visible}.certificate-paper{position:absolute;left:0;top:0;box-shadow:none;width:100%;height:auto;padding:0}.no-print{display:none!important}}@media(max-width:1050px){.certificate-paper{width:100%;height:auto;aspect-ratio:1.41/1}.cert-title{font-size:2.5rem}}.spinner{width:40px;height:40px;border:3px solid rgba(0,242,254,.1);border-top-color:var(--accent-cyan);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app{height:100vh;width:100vw;display:flex;flex-direction:column}.main-content{flex:1;display:flex;overflow-x:auto;overflow-y:hidden;scroll-behavior:smooth;scroll-snap-type:x mandatory}