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8px}.course-player-title{font-size:1.05rem;font-weight:700;white-space:normal;word-break:break-word;margin:0;line-height:1.3}.course-player-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:.78rem}.course-player-meta .badge{padding:2px 8px;font-size:.72rem}.course-player-progress-bar-container .progress-bar{height:4px}}@media (max-width: 480px){.course-player-header{padding:10px 12px;margin-bottom:10px}.course-player-info{gap:6px;margin-bottom:6px}.course-player-title{font-size:.98rem}.course-player-meta{gap:6px;font-size:.74rem}}.course-player-grid{display:grid;grid-template-columns:1fr 360px;gap:24px;align-items:start}@media (max-width: 1024px){.course-player-grid{grid-template-columns:1fr}}.course-lesson-card{background:var(--bg-glass);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-md)}.course-lesson-header{padding:28px 32px;border-bottom:1px solid 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var(--transition-fast);font-size:.78rem}.layer-item:hover{border-color:var(--accent-primary-light);background:var(--bg-glass-hover)}.layer-item.active{border-color:var(--accent-primary);background:#2563eb26;font-weight:600}.layer-item-actions{display:flex;align-items:center;gap:3px}.layer-action-btn{background:transparent;border:none;color:var(--text-muted);padding:2px;border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.layer-action-btn:hover{color:var(--text-primary);background:#ffffff1a}.canvas-workspace-wrapper{background-color:#f1f5f9;background-image:radial-gradient(rgba(100,116,139,.28) 1.25px,transparent 1.25px);background-size:20px 20px;background-position:0 0;border:none;border-radius:0;padding:32px 24px 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