.app-shell{flex-direction:column;min-height:100vh;display:flex}:root{--bg:#f4f6f9;--surface:#fff;--primary:#1e3a8a;--accent:#f59e0b;--muted:#6b7280;--success:#16a34a;--danger:#dc2626;--container-max:1100px;--pad-lg:32px;--pad-md:20px;--pad-sm:12px}.container{max-width:var(--container-max);width:100%;margin:0 auto;padding:0 16px}.app-main{flex:1}.navbar{color:#fff;background:#1e3a8a;justify-content:space-between;align-items:center;padding:16px 32px;display:flex}.navbar-brand{color:#fff;font-size:1.3rem;font-weight:700}.navbar-links{align-items:center;gap:20px;display:flex}.navbar-links a{color:#fff;border-radius:6px;padding:8px 10px}.navbar-links .btn-outline{padding:8px 12px}.navbar-user{align-items:center;gap:10px;display:flex}.navbar-user .btn-text{color:#fbbf24}.footer{text-align:center;color:#ccc;background:#111827;padding:16px;font-size:.85rem}.hero{text-align:center;color:#fff;background:linear-gradient(135deg,#1e3a8a,#3b82f6);padding:100px 20px}.hero h1{margin-bottom:12px;font-size:2.5rem}.hero p{margin-bottom:24px;font-size:1.1rem}.hero .btn-primary{background:#f59e0b}.page-container{max-width:1100px;margin:0 auto;padding:32px 20px}.page-header-row{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.auth-page{justify-content:center;padding:60px 20px;display:flex}.auth-card{background:#fff;border-radius:10px;width:100%;max-width:420px;padding:32px;box-shadow:0 4px 12px #00000014}.auth-tabs{border-bottom:2px solid #eee;margin:16px 0;display:flex}.auth-tabs .tab{color:#888;background:0 0;border:none;flex:1;padding:10px;font-weight:600}.auth-tabs .tab.active{color:#1e3a8a;border-bottom:3px solid #1e3a8a}.auth-form{flex-direction:column;gap:6px;display:flex}.auth-form label{margin-top:10px;font-size:.9rem;font-weight:600}.auth-form input{border:1px solid #ccc;border-radius:6px;padding:10px}.auth-form button{margin-top:20px}.auth-note{color:#777;margin-top:12px;font-size:.8rem}.filter-bar{flex-wrap:wrap;gap:8px;margin-bottom:24px;display:flex}.chip{text-transform:capitalize;background:#fff;border:1px solid #ccc;border-radius:20px;padding:6px 14px}.chip.active{color:#fff;background:#1e3a8a;border-color:#1e3a8a}.course-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;display:grid}.course-card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 2px 8px #0000000f}.course-card-thumb{object-fit:cover;background:#ddd;width:100%;height:140px}.course-card-body{padding:14px}.badge{color:#1e3a8a;text-transform:capitalize;background:#eef2ff;border-radius:12px;margin-bottom:8px;padding:3px 10px;font-size:.75rem;display:inline-block}.instructor-byline{color:#666;margin:6px 0 16px}.module-list-preview{margin:10px 0 20px 20px}.module-view-layout{min-height:80vh;display:flex}.module-sidebar{background:#fff;border-right:1px solid #eee;width:320px;padding:20px;overflow-y:auto}.module-main{flex:1;padding:30px}.progress-bar-outer{background:#eee;border-radius:6px;height:10px;margin:8px 0}.progress-bar-inner{background:#16a34a;border-radius:6px;height:100%}.module-accordion{border-bottom:1px solid #eee}.module-header{background:0 0;border:none;justify-content:space-between;width:100%;padding:12px 0;font-weight:600;display:flex}.module-body{flex-direction:column;padding-bottom:10px;display:flex}.module-item{text-align:left;background:0 0;border:none;border-radius:6px;padding:8px 12px}.module-item.active{color:#1e3a8a;background:#eef2ff}.assessment-item{color:#b45309}.content-viewer{background:#fff;border-radius:10px;padding:20px}.cert-banner{color:#166534;background:#dcfce7;border-radius:8px;margin-bottom:16px;padding:14px}.question-block{background:#fff;border-radius:8px;margin-bottom:14px;padding:16px}.question-image{border-radius:6px;max-width:300px;margin:10px 0}.options{flex-direction:column;gap:8px;margin-top:8px;display:flex}.option-label{align-items:center;gap:8px;display:flex}.result-box{border-radius:8px;margin-top:16px;padding:16px}.result-box.pass{color:#166534;background:#dcfce7}.result-box.fail{color:#991b1b;background:#fee2e2}.enrollment-list,.instructor-course-list,.certificate-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.enrollment-card,.instructor-course-card,.certificate-list-card,.module-manage-card{background:#fff;border-radius:10px;padding:16px;box-shadow:0 2px 8px #0000000d}.card-actions{flex-wrap:wrap;gap:12px;margin-top:10px;font-size:.9rem;display:flex}.card-actions a,.card-actions button{color:#1e3a8a;font-weight:600}.module-manage-card{justify-content:space-between;align-items:flex-start;margin-bottom:12px;display:flex}.form-card{background:#fff;border-radius:10px;flex-direction:column;gap:4px;max-width:700px;padding:24px;display:flex}.form-card>label{margin-top:16px;font-weight:600}.form-card input,.form-card select,.form-card textarea{border:1px solid #ccc;border-radius:6px;padding:10px;font-family:inherit}.form-card>button{align-self:flex-start;margin-top:24px}.form-actions{gap:12px;display:flex}.checkbox-row{align-items:center;gap:8px;font-weight:400;display:flex}.question-editor-block{background:#fafbfc;border:1px solid #e5e7eb;border-radius:10px;margin-top:20px;padding:20px}.question-editor-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.question-number-badge{color:#fff;background:#1e3a8a;border-radius:20px;padding:4px 12px;font-size:.85rem;font-weight:700}.question-text-image-row{grid-template-columns:1.4fr 1fr;align-items:stretch;gap:20px;margin-bottom:20px;display:grid}.question-text-col,.question-image-col{flex-direction:column;display:flex}.question-text-col label,.question-image-col label{margin:0 0 6px;font-size:.9rem;font-weight:600}.question-text-col textarea{resize:vertical;flex:1;min-height:120px}.image-drop-zone{background:#fff;border:2px dashed #cbd5e1;border-radius:8px;flex:1;justify-content:center;align-items:center;min-height:90px;display:flex;overflow:hidden}.question-image-preview{object-fit:contain;width:100%;height:100%}.image-placeholder{color:#94a3b8;flex-direction:column;align-items:center;gap:4px;padding:20px;display:flex}.image-placeholder span{font-size:1.6rem}.image-url-input{margin-top:8px}.options-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-top:8px;display:grid}.option-card{background:#fff;border:2px solid #e5e7eb;border-radius:8px;align-items:center;gap:10px;padding:10px 12px;transition:border-color .15s,background .15s;display:flex}.option-card-correct{background:#f0fdf4;border-color:#16a34a}.option-letter{color:#1e3a8a;background:#eef2ff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:.8rem;font-weight:700;display:inline-flex}.option-card-correct .option-letter{color:#fff;background:#16a34a}.option-text-input{background:0 0;border:none;flex:1;padding:4px 0}.option-text-input:focus{outline:none}.option-hint{color:#777;margin-top:10px;display:block}.certificate-editor{flex-wrap:wrap;gap:30px;display:flex}.cert-editor-form{background:#fff;border-radius:10px;flex-direction:column;gap:6px;max-width:350px;padding:20px;display:flex}.cert-editor-form label{margin-top:10px;font-size:.9rem;font-weight:600}.cert-editor-preview{flex:1;min-width:300px}.certificate-view-page{flex-direction:column;align-items:center;display:flex}.certificate{text-align:center;background:#fff;border:6px solid;border-radius:10px;width:100%;max-width:800px;padding:50px;position:relative}.cert-logo{max-height:60px;margin-bottom:10px}.cert-platform{letter-spacing:1px;text-transform:uppercase;font-size:.9rem;font-weight:700}.cert-heading{margin:16px 0;font-size:2rem}.cert-subtext{color:#555}.cert-student-name{margin:8px 0;font-family:Georgia,serif;font-size:2.2rem}.cert-course-title{margin:12px 0;font-size:1.4rem}.cert-footer-text{color:#555;margin:20px 0}.cert-footer-row{justify-content:space-between;margin-top:40px;padding:0 40px;display:flex}.cert-sig-img{max-height:50px}.cert-uid{color:#999;margin-top:30px;display:block}.cert-verify-note{color:#666;margin-top:16px;font-size:.9rem}.certificate-classic{font-family:Georgia,serif}.certificate-modern{border-style:solid;font-family:Segoe UI,sans-serif}.certificate-minimal{border-width:2px;font-family:Segoe UI,sans-serif}.loader-container{flex-direction:column;align-items:center;gap:12px;padding:60px;display:flex}.spinner{border:4px solid #eee;border-top-color:#1e3a8a;border-radius:50%;width:36px;height:36px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.modal-overlay{z-index:100;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{background:#fff;border-radius:10px;width:90%;max-width:500px;padding:20px}.modal-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.modal-close{background:0 0;border:none;font-size:1.4rem}.sidebar{background:#fff;flex-direction:column;gap:8px;width:220px;padding:20px;display:flex}.sidebar-link{border-radius:6px;padding:10px}.sidebar-link.active{color:#1e3a8a;background:#eef2ff;font-weight:600}.assessment-header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.passing-score-tag{color:#1e3a8a;background:#eef2ff;border-radius:20px;padding:4px 12px;font-size:.85rem;font-weight:600}.question-text-display{margin:0;font-size:1.05rem;line-height:1.5}.option-text-display{flex:1}.option-card-selected{background:#eef2ff;border-color:#1e3a8a}.option-card-selected .option-letter{color:#fff;background:#1e3a8a}.option-card input[type=radio]{flex-shrink:0;width:auto}body{background:var(--bg)}.page-container{max-width:var(--container-max);padding:var(--pad-lg) var(--pad-md);margin:0 auto}img,video,iframe{max-width:100%;height:auto}@media (width<=900px){.navbar{padding:12px 16px}.navbar-links{flex-wrap:wrap;gap:12px}.hero{padding:60px 16px}.page-container{padding:20px 12px}.module-view-layout{flex-direction:column}.module-sidebar{border-right:none;order:2;width:100%}.module-main{order:1;padding:16px}.sidebar{flex-direction:row;width:100%;overflow-x:auto}.sidebar-link{white-space:nowrap}.certificate{padding:30px}}@media (width<=480px){.navbar-brand{font-size:1.1rem}.navbar{flex-wrap:wrap}.navbar-links{flex-direction:column;gap:8px;width:100%;margin-top:8px;display:flex}.auth-page{padding:20px 12px}.auth-card{padding:20px}.course-card-thumb{height:110px}.cert-footer-row{flex-direction:column;gap:12px;padding:0 12px}.hero h1{font-size:1.6rem}.hero p{font-size:.95rem}}*{box-sizing:border-box;margin:0;padding:0}body{color:#1a1a1a;background:#f4f6f9;font-family:Segoe UI,system-ui,sans-serif}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}.btn-primary{color:#fff;background:#1e3a8a;border:none;border-radius:6px;padding:10px 20px;font-weight:600}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-outline{color:#1e3a8a;background:0 0;border:2px solid #1e3a8a;border-radius:6px;padding:8px 16px;font-weight:600;display:inline-block}.btn-danger{color:#fff;background:#dc2626;border:none;border-radius:6px;padding:10px 20px}.btn-danger-text{color:#dc2626;background:0 0;border:none}.btn-text{color:#1e3a8a;background:0 0;border:none;font-weight:600}.form-error{color:#dc2626;margin-bottom:8px}.field-error{color:#dc2626;font-size:.85rem}.success-text{color:#16a34a;font-weight:600}label{width:100%;margin-bottom:4px;display:block}input:not([type=checkbox]):not([type=radio]),textarea,select{box-sizing:border-box;width:100%;font-family:inherit}