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12px;border-radius:6px}.button-link.secondary{background:transparent;color:#0b5fff;border:1px solid #0b5fff;padding:6px 10px;border-radius:6px}.icon-button{border:none;background:transparent;padding:8px;border-radius:6px}.icon-button.primary{background:#e8f0ff}.icon-button.danger{background:#ffecec}.content-panel{margin-top:16px}:root{color-scheme:light;--app-bg: #f4f7fb;--app-surface: #ffffff;--app-surface-alt: #f8fafc;--app-surface-muted: #f1f5f9;--app-border: #dce5f2;--app-text: #182033;--app-text-muted: #64748b;--app-text-strong: #0f172a;--app-primary: #2563eb;--app-primary-soft: #e8efff;--app-danger: #dc2626;--app-danger-soft: #fee2e2;--app-success: #16a34a;--app-success-soft: #dcfce7;--app-warning: #92400e;--app-warning-soft: #fef3c7;--app-shadow: rgba(28, 42, 75, .08);--app-shadow-strong: rgba(15, 23, 42, .16);--app-accent: #38bdf8;--app-on-primary: 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var(--app-shadow);transition:transform .2s ease,background-color .2s ease}.auth-card-header{display:flex;justify-content:flex-end}.theme-toggle:hover{transform:translateY(-1px);background:var(--app-surface-alt)}button,input,select{font:inherit}.page-shell{width:min(100%,1480px);margin:0 auto;padding:32px clamp(18px,3vw,44px)}.app-layout{display:grid;min-height:100vh;grid-template-rows:auto 1fr auto;background:radial-gradient(circle at top left,rgba(37,99,235,.12),transparent 34rem),var(--app-bg)}.app-main{width:100%}.top-navbar{position:sticky;top:0;z-index:10;display:grid;grid-template-columns:minmax(240px,1fr) auto minmax(320px,1fr);align-items:center;gap:18px;border-bottom:1px solid var(--app-border);padding:14px clamp(18px,3vw,44px);background:color-mix(in srgb,var(--app-surface) 88%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 10px 30px var(--app-shadow)}.brand-link{display:inline-flex;align-items:center;gap:12px;color:var(--app-text-strong);font-weight:900;text-decoration:none}.brand-link img{width:52px;height:52px;object-fit:contain}.main-nav{display:flex;justify-content:center;gap:8px}.main-nav a{border-radius:999px;padding:10px 14px;color:var(--app-text-muted);font-weight:800;text-decoration:none}.main-nav a.active{color:var(--app-primary);background:var(--app-primary-soft)}.session-box{display:flex;align-items:center;justify-content:flex-end;gap:14px}.user-avatar-navbar{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:50%;border:2px solid var(--app-primary-soft);background:linear-gradient(135deg,var(--app-primary),var(--app-accent));color:var(--app-on-primary);font-weight:900;flex:0 0 44px;cursor:pointer;transition:border-color .2s ease,transform .2s ease}.user-avatar-navbar 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.lesson-video-frame{position:absolute;top:0;left:0;width:100%;height:100%}.canvas-preview-media,.responsive-video-embed{width:100%;border-radius:12px;object-fit:cover;border:0}.canvas-block-controls{display:grid;gap:10px}.canvas-block-placeholder,.canvas-block-url{padding:14px;border-radius:12px;background:var(--app-surface-alt);color:var(--app-text-muted)}.canvas-block-url{color:var(--app-text-strong)}.lesson-block-text{white-space:pre-wrap;line-height:1.6;font-size:.95rem;color:var(--app-text)}.inline-link{color:var(--app-primary);word-break:break-all}.small-text{font-size:.95rem}.status-banner{padding:16px 24px;border-radius:12px;background:var(--app-primary-soft);color:var(--app-primary)}.evaluation-intro{border-radius:20px;background:var(--app-surface);padding:22px 24px;box-shadow:0 18px 40px var(--app-shadow)}.evaluation-intro h2{margin:0 0 8px;font-size:1.3rem;color:var(--app-text-strong)}.evaluation-intro p{margin:0;color:var(--app-text-muted);line-height:1.7}.evaluation-form-body{display:grid;gap:20px}.evaluation-question{border:1px solid var(--app-border);border-radius:20px;padding:22px;background:var(--app-surface);box-shadow:0 18px 50px var(--app-shadow)}.evaluation-question-header{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-bottom:18px}.question-number{display:inline-flex;width:38px;height:38px;align-items:center;justify-content:center;border-radius:50%;background:var(--app-primary-soft);color:var(--app-primary);font-weight:800}.evaluation-question h3{margin:0;font-size:1.02rem;color:var(--app-text-strong)}.evaluation-options{display:grid;gap:12px}.radio-option{display:flex;align-items:center;gap:14px;border:1px solid var(--app-border);border-radius:14px;padding:14px 16px;cursor:pointer;transition:border-color .15s ease,background .15s ease,transform .15s 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rgba(56,189,248,.35);background:var(--app-primary-soft);color:var(--app-text-strong)}.evaluation-feedback.failure{border-color:var(--app-danger-soft);background:var(--app-danger-soft)}.evaluation-feedback.success{border-color:var(--app-success-soft);background:var(--app-success-soft)}.evaluation-feedback h3{margin:0 0 10px;font-size:1.1rem}.evaluation-feedback p{margin:0;line-height:1.75;color:#475569}.feedback-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;display:grid;place-items:center;padding:24px;z-index:1000}.feedback-modal{width:min(560px,100%);background:var(--app-surface);border-radius:28px;padding:32px 28px;box-shadow:0 28px 80px var(--app-shadow-strong);position:relative;display:grid;gap:18px}.feedback-close{position:absolute;top:18px;right:18px;width:38px;height:38px;border:0;border-radius:999px;background:var(--app-surface-alt);color:var(--app-text-strong);font-size:1.3rem;cursor:pointer}.feedback-modal h2{margin:0;color:var(--app-text-strong);font-size:1.8rem}.feedback-modal p{margin:0;color:var(--app-text-muted);line-height:1.8}.feedback-modal .button-link{justify-self:end}.status-text{margin:0;font-weight:700}.status-text.success{color:var(--app-success)}.status-text.failure{color:var(--app-danger)}.evaluation-details{display:grid;gap:14px;margin-top:18px}.evaluation-result-item{display:grid;grid-template-columns:1fr auto;gap:18px;padding:18px;border-radius:18px;background:var(--app-surface-alt)}.evaluation-result-item.correct{background:var(--app-success-soft)}.evaluation-result-item.incorrect{background:var(--app-danger-soft)}.evaluation-result-content h3{margin:0 0 8px;font-size:1rem;color:var(--app-text-strong)}.evaluation-result-content p{margin:4px 0;color:var(--app-text-muted)}.evaluation-result-badge{display:grid;align-items:center}.evaluation-result-badge .status-badge{padding:10px 14px;border-radius:999px;font-size:.9rem;font-weight:700}.evaluation-result-badge 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ease,background-color .18s ease}.notifications-toggle:hover{border-color:var(--app-primary);background:var(--app-primary-soft)}.loading-text{color:var(--app-text-muted);margin:24px 0}.notifications-list{display:grid;gap:18px}.notification-item{display:grid;grid-template-columns:auto 1fr auto;gap:16px;padding:20px;border-radius:20px;background:var(--app-surface);box-shadow:0 18px 50px #0f172a0f;border:1px solid transparent}.notification-item.unread{border-color:var(--app-primary)}.notification-icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:1.5rem;background:var(--app-primary-soft)}.notification-content h3{margin:0 0 8px;font-size:1.05rem}.notification-content p{margin:0;color:var(--app-text-muted);line-height:1.6}.notification-content .course-reference{margin-top:12px;color:var(--app-text-strong);font-size:.94rem}.notification-content .notification-date{display:inline-block;margin-top:12px;color:var(--app-text-muted);font-size:.87rem}.notification-actions{display:grid;gap:10px;align-content:center}.notification-actions button{border:none;background:transparent;cursor:pointer;color:var(--app-primary);font-weight:700}.notification-actions button.danger{color:var(--app-danger)}.notification-link{position:relative}.badge-count{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 8px;margin-left:8px;border-radius:999px;background:var(--app-danger);color:#fff;font-size:.75rem;font-weight:700}.form-message{margin:0;color:var(--app-primary);font-weight:700}.profile-grid{display:grid;grid-template-columns:minmax(320px,360px) minmax(320px,1fr);gap:30px;align-items:start}.profile-card{display:grid;gap:26px;padding:28px;border:1px solid var(--app-border);border-radius:24px;background:var(--app-surface)}.profile-avatar{width:148px;height:148px;border-radius:50%;display:grid;place-items:center;background:var(--app-primary-soft);color:var(--app-on-primary, #ffffff);font-size:2.25rem;font-weight:800;box-shadow:0 20px 45px #2563eb2e;overflow:hidden}.profile-avatar img{width:100%;height:100%;object-fit:contain;object-position:center;border-radius:50%;background:var(--app-primary-soft)}.page-shell.profile-page{width:100%;max-width:none;margin:0;padding:48px 24px 32px;background:linear-gradient(180deg,var(--app-surface-alt) 0%,var(--app-surface) 100%)}.profile-card{width:min(100%,1200px);margin:0 auto;padding:42px;border-radius:28px;background:var(--app-surface);box-shadow:0 35px 90px #162e531f}.profile-card:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:-1;border-radius:inherit;background:radial-gradient(circle at top left,rgba(37,99,235,.08),transparent 32%)}.profile-page,.profile-card{position:relative}.profile-avatar-wrapper{position:relative;width:148px;height:148px}.profile-card-header{display:flex;justify-content:space-between;align-items:center;gap:18px;padding-bottom:20px;border-bottom:1px solid var(--app-border)}.profile-card-header h1{margin:10px 0 4px;font-size:2rem}.profile-top{display:grid;grid-template-columns:auto 1fr;gap:30px;align-items:center;padding:26px 0;border-bottom:1px solid var(--app-border)}.profile-avatar-wrapper{position:relative;width:140px;height:140px}.avatar-edit-button{position:absolute;right:-8px;bottom:-8px;width:38px;height:38px;border-radius:50%;border:2px solid #ffffff;background:#2563eb;color:#fff;font-size:1rem;display:grid;place-items:center;box-shadow:0 12px 28px #2563eb38;cursor:pointer}.hidden-file-input{display:none}.profile-summary{display:grid;gap:12px}.profile-summary h2{margin:0;font-size:1.8rem}.profile-intro{margin:0;max-width:560px;color:var(--app-text-muted);line-height:1.7}.profile-details-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;padding:28px 0}.profile-detail-card{padding:22px 24px;border-radius:22px;background:var(--app-surface);border:1px solid var(--app-border);transition:transform .2s ease}.profile-detail-card:hover{transform:translateY(-2px)}.profile-detail-card span{display:block;margin-bottom:8px;color:var(--app-text-muted);font-weight:700}.profile-detail-card strong{display:block;font-size:1rem;color:var(--app-text-strong)}.form-group label{display:block;margin-bottom:10px;font-weight:700;color:var(--app-text-strong)}.form-group input,.form-group textarea{width:100%}.form-note{margin:8px 0 0;color:var(--app-text-muted);font-size:.95rem}.form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}.button-row,.action-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.back-button{margin-bottom:16px}@media(max-width:780px){.profile-top{grid-template-columns:1fr;text-align:center}.profile-summary{align-items:center}.profile-details-grid{grid-template-columns:1fr}}.profile-editor-empty p{margin:0;color:var(--app-text-muted)}.form-note{margin:0;color:var(--app-text-muted);font-size:.95rem}.profile-form{display:grid;gap:18px}@media(max-width:900px){.profile-grid{grid-template-columns:1fr}}.profile-readonly{display:grid;gap:12px;padding:16px 18px;border-radius:16px;background:var(--app-surface-alt);border:1px solid var(--app-border)}.profile-readonly strong{display:block;margin-top:4px;color:var(--app-text-strong)}.courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-top:24px}.course-card-admin{border:1px solid var(--app-border);border-radius:20px;background:var(--app-surface);box-shadow:0 18px 50px var(--app-shadow);padding:24px;display:grid;gap:16px}.card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.card-header h3{margin:0;font-size:1.1rem;flex:1}.status-badge{border-radius:999px;padding:6px 12px;font-size:.85rem;font-weight:700;white-space:nowrap}.status-badge.published{background:var(--app-success-soft);color:var(--app-success)}.status-badge.draft{background:var(--app-warning-soft);color:var(--app-warning)}.card-description{margin:0;color:var(--app-text-muted);line-height:1.5}.card-stats{display:flex;flex-wrap:wrap;gap:12px;font-size:.95rem;font-weight:600;color:var(--app-text-muted)}.course-card-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}.course-card-actions .button-link{flex:1 1 calc(50% - 5px);min-width:140px}.icon-buttons-group{display:flex;gap:10px;align-items:center}.icon-button{width:42px;height:42px;border-radius:50%;border:1px solid var(--app-border);background:var(--app-surface);color:var(--app-primary);font-size:1rem;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}.icon-button svg{width:16px;height:16px;stroke-width:2}.icon-button:hover{transform:translateY(-1px);box-shadow:0 10px 24px var(--app-shadow)}.icon-button.primary{background:var(--app-surface-alt);border-color:var(--app-border);color:var(--app-primary)}.icon-button.secondary{background:var(--app-surface-alt);border-color:var(--app-border);color:var(--app-text)}.icon-button.danger{background:var(--app-danger-soft);border-color:#dc26264d;color:var(--app-danger)}@media(max-width:780px){.course-card-actions{flex-direction:column}.course-card-actions 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var(--app-border);border-radius:18px;background:var(--app-surface);padding:20px;display:grid;gap:16px}.module-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.module-header h3{margin:0 0 8px;font-size:1.05rem;color:var(--app-text-strong)}.module-header p{margin:0;color:var(--app-text-muted);font-size:.95rem}.lessons-preview{border:1px dashed var(--app-border);border-radius:12px;padding:12px 16px;background:var(--app-surface-alt);display:grid;gap:8px}.lessons-preview strong{color:var(--app-text-strong);font-size:.95rem}.lessons-preview ul{margin:0;padding:0;list-style:none;display:grid;gap:4px}.lessons-preview li{color:var(--app-text-muted);font-size:.9rem;padding-left:30px;position:relative}.lessons-preview li:before{content:"📖";position:absolute;left:5px}.lesson-editor-modal,.module-editor-modal,.evaluation-editor-modal{position:fixed;top:0;left:0;right:0;bottom:0;background:#0f172a8c;display:flex;align-items:center;justify-content:center;z-index:2000;padding:24px}.lesson-editor-container,.module-editor-container,.evaluation-editor-container{background:var(--app-surface);border-radius:20px;max-width:900px;width:100%;max-height:90vh;display:flex;flex-direction:column;box-shadow:0 25px 50px #00000026}.question-editor{display:grid;gap:18px;border:1px solid var(--app-border);border-radius:18px;padding:18px;background:var(--app-surface-alt)}.question-grid{display:grid;gap:18px}.question-grid .form-group.full-width{grid-column:1 / -1}.question-options{display:grid;gap:8px}.options-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.option-field{display:grid;gap:8px}.question-actions{display:flex;justify-content:flex-end}@media(max-width:780px){.options-row{grid-template-columns:1fr}}.evaluation-editor-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a8c;display:flex;align-items:center;justify-content:center;z-index:2000;padding:24px}.evaluation-editor-container{background:var(--app-surface);border-radius:20px;max-width:900px;width:100%;max-height:90vh;display:flex;flex-direction:column;box-shadow:0 25px 50px #00000026}.evaluation-editor-form{padding:24px;display:grid;gap:18px;overflow-y:auto}.evaluation-editor-modal .editor-header{display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--app-border);padding:24px}.evaluation-editor-modal .editor-header h2{margin:0}@media(max-width:840px){.evaluation-editor-container{max-width:100%}}.canvas-board{position:relative;min-height:520px;max-height:680px;background:linear-gradient(180deg,var(--app-surface-alt) 0%,var(--app-surface) 100%);border:1px dashed var(--app-border);border-radius:20px;overflow:auto;padding:16px}.canvas-block{position:absolute;cursor:grab;transition:transform .15s ease,box-shadow .15s ease;min-width:220px;min-height:160px;background:var(--app-surface);border-radius:18px;box-shadow:0 16px 32px #0f172a14;overflow:hidden}.canvas-block.selected{outline:3px solid rgba(37,99,235,.35);box-shadow:0 18px 32px #2563eb2e}.canvas-block-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:10px;cursor:grab}.canvas-block-content{cursor:auto;height:calc(100% - 52px);overflow:auto}.canvas-block-resize-handle{position:absolute;width:18px;height:18px;right:10px;bottom:10px;background:var(--app-primary);border-radius:50%;cursor:nwse-resize;box-shadow:0 8px 16px #2563eb2e}.canvas-properties-panel{margin-top:16px;padding:18px;border-radius:18px;background:var(--app-surface-alt);border:1px solid var(--app-border)}.canvas-properties-panel h3{margin-top:0;margin-bottom:14px}.editor-header{display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--app-border);padding:24px}.editor-header h2{margin:0}.close-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;border-radius:8px;background:var(--app-surface-alt);cursor:pointer;font-size:1.2rem;color:var(--app-text-muted);transition:all .2s ease}.close-btn:hover{background:var(--app-surface);color:var(--app-text-strong)}.lesson-editor-form,.module-editor-form{overflow-y:auto;padding:24px;flex:1}.form-group{display:grid;gap:8px;margin-bottom:20px}.form-group label{color:var(--app-text-strong);font-weight:700;display:block}.form-group input,.form-group textarea{width:100%;border:1px solid var(--app-border);border-radius:12px;padding:12px 14px;color:var(--app-text);font-family:inherit;background:var(--app-surface);outline:none;transition:border-color .2s ease}.form-group input:focus,.form-group textarea:focus{border-color:var(--app-primary);box-shadow:0 0 0 3px #2563eb1a}.form-group.full-width{grid-column:1 / -1}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.lessons-section{border:1px solid var(--app-border);border-radius:14px;padding:16px;background:var(--app-surface-alt);margin-top:20px}.section-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.section-meta{margin:8px 0 0;color:var(--app-text-muted)}.success-text{color:var(--app-success)}.responsive-video-embed{position:absolute;top:0;left:0;width:100%;height:100%}.lesson-video-frame{width:100%;min-height:180px;border-radius:12px;border:0}.section-header h3{margin:0;font-size:1rem}.lessons-list{display:grid;gap:12px}.lesson-item{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:start;border:1px solid var(--app-border);border-radius:12px;padding:12px;background:var(--app-surface)}.lesson-item.completed{border-color:var(--app-success);background:var(--app-success-soft)}.lesson-info{display:flex;gap:12px}.lesson-order{display:flex;align-items:center;justify-content:center;min-width:32px;height:32px;border-radius:999px;background:var(--app-primary);color:var(--app-on-primary, white);font-weight:700;font-size:.9rem;flex-shrink:0}.lesson-info>div{display:grid;gap:4px}.lesson-info h4{margin:0;font-size:.95rem}.lesson-preview{margin:0;color:var(--app-text-muted);font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.button-link:disabled{opacity:.65;cursor:not-allowed;transform:none}.form-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;border-top:1px solid var(--app-border);padding:20px 24px;background:var(--app-surface-alt)}@media(max-width:720px){.admin-form{grid-template-columns:1fr}.admin-form label,.form-actions{grid-column:1}.top-navbar{position:static;grid-template-columns:1fr}.main-nav{justify-content:flex-start;overflow-x:auto;padding-bottom:2px}.session-box{align-items:stretch;justify-content:stretch;flex-direction:column}.session-box div{text-align:left}.app-footer{display:grid}.employee-row,.user-row,.course-card,.auth-shell{grid-template-columns:1fr}.auth-brand{padding:20px 10px 0}.auth-panel{padding:20px}.company-logo{margin-bottom:24px;display:flex;align-items:center}.company-logo img{width:190px;max-height:90px;object-fit:contain}}