:root{--bg:#fbf9f6;--surface:#fff;--border:#e8e6e0;--text:#1f2333;--text-muted:#666c80;--primary:#f4801f;--primary-hover:#d96a0e;--primary-bg:#f4801f1a;--success:#16a34a;--success-bg:#16a34a1a;--danger:#dc2626;--danger-bg:#dc26261a;--accent-blue:#2e9bd6;--accent-purple:#8a3fd1;--accent-yellow:#f5c518;--accent-green:#8cc63f;--accent-red:#e8491d;--radius:10px;--shadow:0 1px 2px #1018280f, 0 1px 3px #10182814;--sans:"Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--brand-gradient:linear-gradient(90deg, var(--accent-blue), var(--accent-purple), var(--accent-yellow), var(--accent-green), var(--accent-red))}*{box-sizing:border-box}body{font-family:var(--sans);background:var(--bg);color:var(--text);margin:0}h1,h2,h3,h4{letter-spacing:-.01em;margin:0 0 8px;font-weight:600}p{color:var(--text-muted);margin:0 0 8px;line-height:1.5}a{color:var(--primary);text-decoration:none}button{cursor:pointer;font-family:inherit}.container{max-width:1080px;margin:0 auto;padding:24px 20px 64px}.navbar{background:var(--surface);border-bottom:4px solid #0000;border-image:var(--brand-gradient) 1;z-index:10;justify-content:space-between;align-items:center;gap:16px;padding:14px 20px;display:flex;position:sticky;top:0}.navbar-brand{color:var(--text);align-items:center;gap:10px;font-size:18px;font-weight:700;display:flex}.navbar-logo{width:auto;height:36px;display:block}.navbar-links{flex-wrap:wrap;flex:1;gap:4px;display:flex}.navbar-link{color:var(--text-muted);border-radius:8px;padding:8px 12px;font-size:14px;font-weight:500}.navbar-link:hover{background:var(--bg);color:var(--text)}.navbar-link.active{background:var(--primary-bg);color:var(--primary)}.navbar-right{align-items:center;gap:10px;display:flex}.user-badge{flex-direction:column;align-items:flex-end;line-height:1.2;display:flex}.user-badge .name{font-size:13px;font-weight:600}.user-badge .role{color:var(--text-muted);text-transform:capitalize;font-size:11px}.btn{background:var(--primary);color:#fff;border:1px solid #0000;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:9px 16px;font-size:14px;font-weight:600;transition:background .15s;display:inline-flex}.btn:hover{background:var(--primary-hover)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border)}.btn-secondary:hover{background:var(--bg)}.btn-block{width:100%}.grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;display:grid}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.course-card{flex-direction:column;gap:8px;height:100%;display:flex}.badge{background:var(--primary-bg);color:var(--primary);border-radius:999px;align-self:flex-start;align-items:center;padding:3px 9px;font-size:11px;font-weight:600;display:inline-flex}.course-card-footer{justify-content:space-between;align-items:center;gap:8px;margin-top:auto;padding-top:8px;display:flex}.progress-bar-track{background:var(--border);border-radius:999px;width:100%;height:8px;overflow:hidden}.progress-bar-fill{background:var(--success);border-radius:999px;height:100%;transition:width .25s}.progress-label{color:var(--text-muted);justify-content:space-between;margin-top:4px;font-size:12px;display:flex}.page-header{margin-bottom:24px}.page-header .eyebrow{letter-spacing:.06em;text-transform:uppercase;color:var(--primary);margin-bottom:4px;font-size:12px;font-weight:700}.lesson-list{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.lesson-item{border:1px solid var(--border);background:var(--surface);border-radius:8px;align-items:center;gap:10px;padding:12px 14px;font-size:14px;display:flex}.lesson-item.active{border-color:var(--primary);background:var(--primary-bg)}.lesson-item .check{border:2px solid var(--border);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;font-size:12px;display:flex}.lesson-item.done .check{border-color:var(--success);background:var(--success)}.lesson-item a{color:var(--text);flex:1}.layout-two-col{grid-template-columns:260px 1fr;align-items:start;gap:24px;display:grid}@media (width<=720px){.layout-two-col{grid-template-columns:1fr}}.quiz-question{border-bottom:1px solid var(--border);margin-bottom:20px;padding-bottom:20px}.quiz-question:last-child{border-bottom:none}.quiz-options{flex-direction:column;gap:8px;margin-top:10px;display:flex}.quiz-option{border:1px solid var(--border);cursor:pointer;border-radius:8px;align-items:center;gap:10px;padding:10px 12px;font-size:14px;display:flex}.quiz-option:hover{background:var(--bg)}.quiz-option.selected{border-color:var(--primary);background:var(--primary-bg)}.quiz-option.correct{border-color:var(--success);background:var(--success-bg)}.quiz-option.incorrect{border-color:var(--danger);background:var(--danger-bg)}.quiz-result-banner{border-radius:var(--radius);background:var(--primary-bg);color:var(--primary);margin-bottom:20px;padding:16px;font-weight:600}.form-field{flex-direction:column;gap:6px;margin-bottom:16px;display:flex}.form-field label{color:var(--text);font-size:13px;font-weight:600}.form-field input,.form-field textarea,.form-field select{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:8px;padding:9px 12px;font-family:inherit;font-size:14px}.form-field textarea{resize:vertical;min-height:80px}.empty-state{text-align:center;color:var(--text-muted);padding:48px 20px}.flex-row{align-items:center;gap:8px;display:flex}.text-muted{color:var(--text-muted);font-size:13px}.section{margin-bottom:32px}.video-embed{aspect-ratio:16/9;border-radius:var(--radius);background:#000;width:100%;margin-bottom:16px;position:relative;overflow:hidden}.video-embed iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.auth-page{justify-content:center;align-items:center;min-height:calc(100vh - 64px);padding:24px;display:flex}.auth-card{border-top:4px solid #0000;border-image:var(--brand-gradient) 1;width:100%;max-width:380px}.auth-logo{width:auto;height:64px;margin:0 auto 16px;display:block}.error-banner{border-radius:var(--radius);background:var(--danger-bg);color:var(--danger);margin-bottom:16px;padding:12px 14px;font-size:13px}.search-input{border:1px solid var(--border);background:var(--surface);width:100%;max-width:360px;color:var(--text);border-radius:8px;margin-bottom:20px;padding:10px 14px;font-family:inherit;font-size:14px}