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.5rem;color:#e2e8f0;font-size:1.25rem;display:flex;align-items:center;gap:.5rem}.interactive-desc.svelte-9htg4t{color:#94a3b8;font-size:.95rem;margin:0 0 1.5rem}.quiz-wrapper.svelte-9htg4t{margin:1rem 0}.lecture-footer.svelte-9htg4t{max-width:600px;margin:4rem auto 0;text-align:center;padding:3rem;background:#111827;border:1px solid #1e293b;border-radius:20px;box-shadow:0 20px 40px -10px #0000004d}.lecture-footer.svelte-9htg4t h3:where(.svelte-9htg4t){font-size:1.8rem;margin:0 0 1rem;background:linear-gradient(135deg,#a855f7,#4f46e5);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.lecture-footer.svelte-9htg4t p:where(.svelte-9htg4t){color:#94a3b8;margin:0 0 2rem}.primary-btn.svelte-9htg4t{background:linear-gradient(135deg,#4f46e5,#a855f7);color:#fff;border:none;padding:1rem 2.5rem;font-size:1.1rem;font-weight:700;border-radius:999px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px 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#334155;border-radius:50%;width:3rem;height:3rem;font-size:1.3rem;display:flex;justify-content:center;align-items:center;cursor:pointer;box-shadow:0 6px 16px -4px #00000080;transition:all .2s ease}.toggle-btn.svelte-mdimun:hover{transform:translateY(-2px);border-color:#475569}.toggle-btn.is-active.svelte-mdimun{background:linear-gradient(135deg,#4f46e5,#a855f7);border-color:transparent;box-shadow:0 8px 20px #4f46e573}.tools-panel.svelte-mdimun{background:#0f172af5;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid #334155;border-radius:12px;padding:.6rem;display:flex;flex-direction:column;gap:.5rem;box-shadow:0 8px 24px -4px #0009;animation:svelte-mdimun-slideUp .25s cubic-bezier(.16,1,.3,1)}.tool-group.svelte-mdimun{display:flex;gap:.35rem;background:#1e293b;padding:.4rem;border-radius:10px}.action-group.svelte-mdimun{justify-content:space-around}.action-btn.svelte-mdimun{background:transparent;border:none;font-size:1.2rem;padding:.35rem;border-radius:8px;cursor:pointer;transition:background .15s;flex:1;display:flex;align-items:center;justify-content:center}.action-btn.svelte-mdimun:hover{background:#ffffff1a}.action-btn.danger.svelte-mdimun:hover{background:#ef444433}.divider.svelte-mdimun{width:1px;background:#334155;margin:.15rem 0}.tool-btn.svelte-mdimun{background:transparent;border:none;font-size:1.3rem;width:2.6rem;height:2.6rem;border-radius:8px;cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center;color:#94a3b8}.tool-btn.svelte-mdimun:hover{background:#ffffff14;color:#f8fafc}.tool-btn.active.svelte-mdimun{background:#334155;color:#fff}.color-picker.svelte-mdimun{display:flex;gap:.5rem;justify-content:center;padding:.3rem .4rem}.color-swatch.svelte-mdimun{width:1.6rem;height:1.6rem;border-radius:50%;border:2px solid #1e293b;cursor:pointer;transition:all .15s;outline:none}.color-swatch.svelte-mdimun:hover{transform:scale(1.18)}.color-swatch.active.svelte-mdimun{border-color:#fff;transform:scale(1.18);box-shadow:0 0 8px #fff6}.shortcut-hints.svelte-mdimun{display:flex;gap:.5rem;padding:.2rem .4rem;justify-content:center;flex-wrap:wrap}.shortcut-hints.svelte-mdimun span:where(.svelte-mdimun){font-size:.62rem;color:#475569;font-weight:500;letter-spacing:.2px}.toast.svelte-mdimun{position:fixed;bottom:9rem;right:1.5rem;background:#1e293b;color:#f8fafc;border:1px solid #334155;border-radius:10px;padding:.5rem 1rem;font-size:.9rem;z-index:10000;box-shadow:0 4px 16px #0006;animation:svelte-mdimun-slideUp .2s ease}@keyframes svelte-mdimun-slideUp{0%{opacity:0;transform:translateY(12px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}@media(min-width:1280px){.toggle-btn.svelte-mdimun{width:3.5rem;height:3.5rem;font-size:1.5rem}.tool-btn.svelte-mdimun{width:3rem;height:3rem;font-size:1.5rem}.action-btn.svelte-mdimun{font-size:1.4rem}.color-swatch.svelte-mdimun{width:2rem;height:2rem}.toolbar-container.svelte-mdimun{right:2rem;bottom:6rem}.toolbar-container.svelte-mdimun:not(.active){bottom:2rem}}