@import"https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400..900;1,400..900&display=swap";:root{--primary-blue: #0052cc;--hover-blue: #0041a3;--text-dark: #172b4d;--text-mid: #344563;--text-light: #6b778c;--surface: #ffffff;--muted-bg: #f4f5f7;--border: #dfe1e6;--font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;--container: 1120px;--radius: 12px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--surface);color:var(--text-dark);font-family:var(--font);line-height:1.5}.hidden{display:none!important}main{padding-top:0;min-height:80vh}.main-header{background:#fff;border-bottom:1px solid var(--border);padding:0 24px;position:sticky;top:0;z-index:1000}.header-container{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1400px;margin:0 auto}.logo-link{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-dark)}.logo-image{height:65px;width:220px}.site-name{font-weight:700;font-size:1.2rem;letter-spacing:.2px}.auth-navigation a,.main-navigation a{text-decoration:none;padding:8px 16px;font-weight:600;border-radius:6px;transition:background-color .2s,color .2s}.login-link{color:var(--primary-blue)}.signup-button{background:var(--primary-blue);color:#fff}.signup-button:hover{background:var(--hover-blue)}.profile-menu{position:relative}.profile-button{width:40px;height:40px;border-radius:50%;background:var(--muted-bg);color:var(--text-mid);border:1px solid var(--border);font-size:1rem;font-weight:700;cursor:pointer;padding:0;overflow:hidden;display:flex;align-items:center;justify-content:center}.profile-button img{width:100%;height:100%;object-fit:cover}.profile-dropdown{display:none;position:absolute;right:0;top:50px;background:#fff;border-radius:10px;box-shadow:0 8px 20px #0000001f;width:260px;z-index:100;overflow:hidden;border:1px solid var(--border)}.profile-dropdown.active{display:block}.profile-dropdown .dropdown-header{padding:12px 16px;border-bottom:1px solid var(--border)}.profile-dropdown .user-name{margin:0;font-weight:800;color:var(--text-dark)}.profile-dropdown .user-email{margin:4px 0 0;color:var(--text-light);font-weight:600;font-size:.9rem}.profile-dropdown .dropdown-item{display:block;padding:12px 16px;color:var(--text-dark);text-decoration:none;font-weight:500}.profile-dropdown .dropdown-item:hover{background:var(--muted-bg)}.profile-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;margin-top:2rem}.profile-picture-area{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-bottom:2rem;padding-bottom:2rem;border-bottom:1px solid var(--border)}#profile-photo-preview{width:120px;height:120px;border-radius:50%;object-fit:cover;border:4px solid var(--surface);box-shadow:0 4px 10px #0000001a}.form-group{margin-bottom:1.5rem}.form-group label{display:block;font-weight:600;color:var(--text-mid);margin-bottom:.5rem}.form-actions{display:flex;gap:1rem;margin-top:2rem;border-top:1px solid var(--border);padding-top:1.5rem}.header-right{display:flex;align-items:center;gap:12px}.search-wrap{position:relative;width:280px;max-width:42vw}.search-input{width:100%;padding:10px 12px 10px 36px;border:1px solid var(--border);border-radius:10px;font-size:.95rem;font-weight:500;color:var(--text-dark);background:#fff url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24"><path fill="%236b778c" d="M10 18a8 8 0 1 1 6.32-3.1l5.39 5.39l-1.41 1.41l-5.39-5.39A8 8 0 0 1 10 18Zm0-2a6 6 0 1 0 0-12a6 6 0 0 0 0 12Z"/></svg>') no-repeat 10px 50%;background-size:18px}.search-input::placeholder{color:var(--text-light);font-weight:500}.icon-button{position:relative;width:40px;height:40px;border-radius:10px;background:#fff;border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.icon-button:hover{background:var(--muted-bg)}.badge{position:absolute;top:-4px;right:-4px;min-width:18px;height:18px;padding:0 4px;font-size:11px;font-weight:800;color:#fff;background:#e11d48;border-radius:999px;display:inline-flex;align-items:center;justify-content:center}.hamburger{display:none;width:40px;height:40px;border:1px solid var(--border);border-radius:10px;background:#fff}.mobile-drawer{position:fixed;inset:0 0 0 auto;width:86%;max-width:380px;background:#fff;border-left:1px solid var(--border);transform:translate(100%);transition:transform .2s ease;z-index:120}.mobile-drawer.open{transform:translate(0)}.mobile-nav{display:flex;flex-direction:column;padding:16px;gap:8px}.mobile-link{display:block;padding:12px 10px;text-decoration:none;color:var(--text-dark);font-weight:700;font-size:1rem;border-radius:10px}.mobile-link:hover{background:var(--muted-bg)}.mobile-auth{display:flex;gap:10px;padding-top:6px}.mobile-login,.mobile-signup{padding:10px 14px;border-radius:10px;text-decoration:none;font-weight:700;border:1px solid var(--border)}.mobile-signup{background:var(--primary-blue);color:#fff;border-color:var(--primary-blue)}.main-navigation{display:flex;gap:16px}.main-navigation .nav-link{color:var(--text-mid);font-weight:700;text-decoration:none;padding:10px 4px}.main-navigation .nav-link.active{color:var(--primary-blue)}.tabs-bar{display:none;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:#fff}.tabs-bar .tab-link{display:inline-block;padding:12px 16px;text-decoration:none;color:var(--text-mid);font-weight:700;font-size:.95rem}.tabs-bar .tab-link.active{color:var(--primary-blue);position:relative}.tabs-bar .tab-link.active:after{content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;background:var(--primary-blue)}.page-content{padding:0}.section-hero{position:relative;background:radial-gradient(1200px 600px at 50% -10%,#e9f1ff,#fff 60%);padding:88px 24px 64px;border-bottom:1px solid var(--border)}.hero-inner{max-width:var(--container);margin:0 auto;text-align:center}.badge-free{display:inline-block;background:#e6f0ff;color:var(--primary-blue);padding:8px 14px;border-radius:999px;font-size:.875rem;font-weight:700;letter-spacing:.2px}.hero-title{margin:16px auto 12px;max-width:900px;font-size:2.75rem;font-weight:800;color:var(--text-dark);letter-spacing:.2px}.hero-subtitle{margin:0 auto 28px;max-width:720px;font-size:1.125rem;color:var(--text-mid);font-weight:500}.hero-cta{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:18px}.cta-button{display:inline-block;background:var(--primary-blue);color:#fff;padding:14px 22px;font-size:1rem;font-weight:700;text-decoration:none;border-radius:10px;border:1px solid transparent;transition:transform .08s ease,background-color .2s ease;cursor:pointer}.cta-button:hover{background:var(--hover-blue);transform:translateY(-1px)}.cta-secondary{display:inline-block;padding:13px 20px;font-size:1rem;font-weight:700;color:var(--primary-blue);background:#ecf2ff;text-decoration:none;border-radius:10px;border:1px solid #d5e1ff}.cta-secondary:hover{filter:brightness(.98)}.hero-trust{margin-top:18px;display:flex;gap:18px;justify-content:center;flex-wrap:wrap;color:var(--text-light);font-weight:600;font-size:.95rem}.section-value{background:#fff;padding:40px 24px;border-bottom:1px solid var(--border)}.value-grid{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.value-item{background:var(--muted-bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px}.value-icon{font-size:1.4rem}.value-title{margin:8px 0 6px;font-size:1.1rem;font-weight:700}.value-text{margin:0;color:var(--text-mid);font-size:.98rem}.section-featured{padding:40px 24px}.section-header{max-width:var(--container);margin:0 auto 16px;display:flex;align-items:baseline;justify-content:space-between}.section-title{font-size:1.6rem;font-weight:800;margin:0}.section-title.center{text-align:center}.link-more{color:var(--primary-blue);text-decoration:none;font-weight:700}.card-grid{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .08s ease,box-shadow .2s ease}.card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #00000014}.card-thumb{background:linear-gradient(135deg,#d8e7ff,#f0f5ff);height:140px}.card-body{padding:14px 16px 18px}.card-title{margin:2px 0 4px;font-size:1rem;font-weight:700}.card-meta{margin:0;color:var(--text-light);font-size:.9rem;font-weight:600}.section-how,.section-testimonials,.section-faq,.section-cta{padding:44px 24px}.section-how{background:#fff}.steps{max-width:var(--container);margin:14px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{border:1px solid var(--border);border-radius:var(--radius);padding:22px;background:var(--muted-bg)}.step-number{width:34px;height:34px;border-radius:50%;background:#e6f0ff;color:var(--primary-blue);display:flex;align-items:center;justify-content:center;font-weight:800}.step-title{margin:10px 0 6px;font-size:1.1rem;font-weight:700}.step-text{margin:0;color:var(--text-mid)}.section-testimonials{background:radial-gradient(1200px 600px at 50% -10%,#f6f9ff,#fff 60%);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.quote{max-width:760px;margin:12px auto 0;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px}.quote-text{margin:0 0 8px;font-size:1.1rem;font-weight:700}.quote-meta{margin:0;color:var(--text-light);font-weight:600}.faq-item{max-width:760px;margin:0 auto 10px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px}.faq-q{font-weight:700;font-size:1rem;color:var(--text-dark);cursor:pointer}.faq-a{margin:8px 0 0;color:var(--text-mid);font-size:.98rem}.section-cta{background:#0a1f44;color:#eef3ff;text-align:center}.cta-inner{max-width:760px;margin:0 auto}.cta-title{margin:0 0 6px;font-size:1.8rem;font-weight:800}.cta-text{margin:0 0 18px;font-size:1.05rem;color:#cdd9ff}.content-container{max-width:var(--container);margin:0 auto;padding:24px}.content-container.narrow{max-width:720px}.stack-form input,.stack-form textarea,.stack-form select{width:100%;padding:12px;margin-bottom:12px;font-size:1rem;color:var(--text-dark);border:1px solid var(--border);border-radius:10px;background:#fff}.dash-hero{padding:8px 0 6px}.dash-title{margin:0;font-size:1.6rem;font-weight:800}.dash-sub{margin:4px 0 0;color:var(--text-light)}.dash-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.dash-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px}.dash-card-title{margin:0 0 10px;font-size:1.1rem;font-weight:800}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:8px 12px;border-radius:999px;border:1px solid var(--border);background:var(--muted-bg);cursor:pointer;font-weight:700;color:var(--text-mid)}.chip:hover{filter:brightness(.98)}.mini-card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.mini-card{border:1px solid var(--border);border-radius:10px;overflow:hidden;background:#fff}.mini-thumb{height:90px;background:linear-gradient(135deg,#d8e7ff,#f0f5ff)}.mini-body{padding:10px 12px}.mini-title{margin:0 0 4px;font-size:.98rem;font-weight:700}.mini-meta{margin:0;color:var(--text-light);font-weight:600;font-size:.9rem}.site-footer{border-top:1px solid var(--border);background:#fff;color:var(--text-mid)}.footer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px;max-width:var(--container);margin:0 auto}.footer-name{font-weight:800;font-size:1.1rem;color:var(--text-dark)}.footer-tag{margin:4px 0 0;color:var(--text-light);font-size:.95rem}.footer-socials{display:flex;gap:12px}.social-link{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--border);color:var(--text-dark);text-decoration:none;transition:background-color .2s,transform .08s}.social-link:hover{background:var(--muted-bg);transform:translateY(-1px)}.footer-bottom{border-top:1px solid var(--border);text-align:center;padding:14px;font-size:.95rem}.modal-overlay{position:fixed;inset:0;background:#0a142852;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:grid;place-items:center;z-index:999;opacity:0;transition:opacity .2s ease-in-out}.modal-overlay:not(.hidden){opacity:1}.auth-card{margin-top:50px;width:min(480px,90vw);max-height:90vh;overflow-y:auto;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:0 20px 60px #00000029;padding:2rem;position:relative;transform:scale(.95);transition:transform .2s ease-in-out}.modal-overlay:not(.hidden) .auth-card{transform:scale(1)}.auth-close{position:absolute;top:1rem;right:1rem;width:36px;height:36px;border-radius:50%;border:none;background:var(--muted-bg);font-size:20px;font-weight:700;color:var(--text-light);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background-color .2s,color .2s}.auth-close:hover{background:#e1e4e8;color:var(--text-dark)}.auth-title{margin:0 0 1.5rem;font-size:1.75rem;font-weight:700;text-align:center}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:0;border-bottom:1px solid var(--border);margin-bottom:1.5rem}.auth-tab{padding:1rem;border:none;background:transparent;font-weight:600;font-size:1rem;color:var(--text-light);cursor:pointer;border-bottom:3px solid transparent;transition:color .2s,border-bottom-color .2s}.auth-tab:hover{color:var(--text-dark)}.auth-tab.active{color:var(--primary-blue);border-bottom-color:var(--primary-blue)}.google-btn{display:flex;align-items:center;justify-content:center;width:100%;padding:12px;background-color:#fff;border:1px solid var(--border);border-radius:8px;font-family:var(--font);font-weight:600;font-size:.95rem;color:var(--text-mid);cursor:pointer;transition:background-color .2s,box-shadow .2s}.google-btn:hover{background-color:var(--muted-bg);border-color:#ccc}.google-btn img{height:20px;margin-right:12px}.auth-divider{font-size:.75rem;color:var(--text-light);text-align:center;margin:1.5rem 0;text-transform:uppercase;display:flex;align-items:center}.auth-divider:before,.auth-divider:after{content:"";flex-grow:1;height:1px;background:var(--border)}.auth-divider:before{margin-right:.75em}.auth-divider:after{margin-left:.75em}#modal-signup-form input,#modal-signup-form select,#modal-login-form input{width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;font-size:1rem;color:var(--text-dark);background:var(--muted-bg);margin-bottom:1rem;transition:border-color .2s,box-shadow .2s}#modal-signup-form input:focus,#modal-signup-form select:focus,#modal-login-form input:focus{outline:none;border-color:var(--primary-blue);background:#fff;box-shadow:0 0 0 3px #0052cc26}.steps-indicator{display:flex;justify-content:center;gap:8px;margin-bottom:1.5rem}.dot{width:10px;height:10px;border-radius:50%;background:#e1e4e8;transition:background-color .3s}.dot.active{background:var(--primary-blue)}.wizard-nav{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:8px}.secondary{padding:10px 14px;border:1px solid var(--border);border-radius:10px;font-weight:700;background:#fff;cursor:pointer}.secondary:hover{background-color:var(--muted-bg)}.review-box{border:1px solid var(--border);background:var(--muted-bg);border-radius:12px;padding:12px;line-height:1.6;color:var(--text-mid);margin-bottom:10px}.auth-footnote{color:var(--text-light);font-weight:500;margin:1rem 0 0;text-align:center;font-size:.9rem}.auth-footnote a{color:var(--primary-blue);font-weight:600;text-decoration:none}.auth-footnote a:hover{text-decoration:underline}.field-label{display:block;font-weight:700;margin:1rem 0 .5rem;color:var(--text-mid)}.chips-group{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}.chip-radio{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--border);border-radius:999px;background:#fff;cursor:pointer;-webkit-user-select:none;user-select:none;font-weight:600;color:var(--text-mid)}.chip-radio input{display:none}.chip-radio:has(input:checked){background-color:#e6f0ff;border-color:var(--primary-blue);color:var(--primary-blue)}.cb{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--text-mid)}.cb input{accent-color:var(--primary-blue)}.auth-loader{width:120px;height:40px;background-color:#eef2f6;border-radius:8px;animation:pulse 1.5s cubic-bezier(.4,0,.6,1) infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.section-quote{background-color:var(--muted-bg);padding:4rem 2rem;text-align:center}.quote-container{max-width:800px;margin:0 auto;position:relative}#quote-text{font-family:Playfair Display,serif;font-size:2.25rem;font-style:italic;font-weight:600;color:var(--text-dark);line-height:1.4;margin:0}#quote-text:before{content:"“";position:absolute;top:-2rem;left:-2rem;font-size:8rem;color:var(--primary-blue);opacity:.1;z-index:1}#quote-author{display:block;margin-top:1.5rem;font-weight:600;color:var(--text-mid);font-size:1.1rem}#quote-author:before{content:"— "}.settings-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:2rem}.settings-card h3{margin-top:0;border-bottom:1px solid var(--border);padding-bottom:.75rem;margin-bottom:1.5rem}.toggle-group{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.toggle-group label{font-weight:600;color:var(--text-mid)}.toggle-switch{position:relative;display:inline-block;width:50px;height:28px}.toggle-switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:#ccc;transition:.4s;border-radius:28px}.slider:before{position:absolute;content:"";height:20px;width:20px;left:4px;bottom:4px;background-color:#fff;transition:.4s;border-radius:50%}input:checked+.slider{background-color:var(--primary-blue)}input:checked+.slider:before{transform:translate(22px)}.danger-zone{border-color:#fca5a5;background-color:#fef2f2}.danger-zone p{color:#991b1b}.danger{background-color:#dc2626;color:#fff;border:none;padding:10px 14px;border-radius:10px;font-weight:700;cursor:pointer;transition:background-color .2s}.danger:hover:not(:disabled){background-color:#b91c1c}.danger:disabled{opacity:.5;cursor:not-allowed}.about-header{text-align:center;padding-bottom:2rem;border-bottom:1px solid var(--border);margin-bottom:2rem}.about-tagline{font-size:1.25rem;color:var(--text-mid);max-width:600px;margin:.5rem auto 0}.about-section{margin-bottom:2.5rem}.about-subtitle{font-size:1.75rem;font-weight:700;color:var(--text-dark);margin-bottom:1rem}.about-section p{line-height:1.7;color:var(--text-mid)}.features-list{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:2rem}.features-list li h4{font-size:1.1rem;font-weight:700;color:var(--primary-blue);margin-top:0;margin-bottom:.5rem}.cta-section{background-color:var(--muted-bg);border-radius:var(--radius);padding:2rem;text-align:center}.cta-section .cta-button{margin-top:1rem}.content-container{max-width:var(--container);margin:0rem auto;padding:6rem;background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 25px #00000012}.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem}.file-input-label{display:inline-block;padding:10px 14px;border:1px solid var(--border);border-radius:8px;background-color:var(--muted-bg);cursor:pointer;font-weight:600;transition:background-color .2s}.file-input-label:hover{background-color:#e1e4e8}.progress-bar-container{width:100%;height:24px;background-color:#e1e4e8;border-radius:12px;margin-top:.5rem;position:relative;overflow:hidden}.progress-bar-fill{height:100%;width:0%;background-color:var(--primary-blue);border-radius:12px;transition:width .3s ease}.progress-bar-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-weight:600;font-size:.8rem;text-shadow:1px 1px 2px rgba(0,0,0,.5)}.status-text{margin-top:1rem;font-weight:600;color:var(--primary-blue)}.content-list .mini-card{margin-bottom:1rem}.file-input-group{display:flex;align-items:center;gap:1rem}.file-name-display{font-style:italic;color:var(--text-light);font-size:.9rem}.progress-bar-fill.success{background-color:#22c55e}.progress-bar-fill.error{background-color:#ef4444}.content-type-badge{font-size:.7rem;font-weight:700;text-transform:uppercase;padding:2px 6px;border-radius:4px;background-color:var(--muted-bg);color:var(--text-light);vertical-align:middle;margin-left:.5rem}.slides-frame-container{position:relative;width:100%;padding-top:56.25%;background:#f0f0f0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}#pptx-container,#pdf-frame{position:absolute;top:0;left:0;width:100%;height:100%}#lessondeck-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:2rem}.unsupported-view{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:3rem 2rem;height:100%}.unsupported-icon{font-size:3rem;margin-bottom:1rem}.unsupported-view h3{margin:0 0 .5rem;font-size:1.5rem;color:var(--text-dark)}.unsupported-view p{max-width:400px;color:var(--text-mid);margin-bottom:1.5rem}.list-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.25rem;margin-top:1.5rem}@media (max-width: 768px){#lessondeck-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 1024px){.admin-grid{grid-template-columns:1fr}}@media (max-width: 768px){.features-list{grid-template-columns:1fr}}@media (max-width: 1200px){.admin-grid{grid-template-columns:1fr}}@media (max-width: 1024px){.main-navigation,.search-wrap{display:none}.hamburger{display:inline-flex;align-items:center;justify-content:center}.dash-grid{grid-template-columns:1fr}.card-grid{grid-template-columns:repeat(3,1fr)}.list-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.hero-title{font-size:2.1rem}.card-grid{grid-template-columns:repeat(2,1fr)}.value-grid,.steps{grid-template-columns:1fr}.footer-top{flex-direction:column;align-items:flex-start}}@media (max-width: 560px){.grid-2{grid-template-columns:1fr}}@media (max-width: 420px){.hero-cta{flex-direction:column}}