:root{--bg-app: #090d0f;--bg-sidebar: #0e1315;--bg-card: rgba(18, 26, 29, .75);--bg-card-hover: rgba(28, 38, 43, .9);--border-color: rgba(14, 165, 233, .15);--border-color-active: rgba(0, 240, 255, .45);--text-main: #e2e8f0;--text-muted: #64748b;--text-bright: #ffffff;--accent-cyan: #00f0ff;--accent-pink: #ff1493;--accent-green: #39ff14;--accent-teal: #0d7c66;--accent-teal-bright: #14b8a6;color:var(--text-main);background:var(--bg-app);font-family:Outfit,Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box;scrollbar-width:thin;scrollbar-color:rgba(0,240,255,.2) rgba(9,13,15,.15)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#00f0ff2e;border-radius:9999px;border:1px solid transparent;background-clip:padding-box;box-shadow:inset 0 0 0 1px #00f0ff14}::-webkit-scrollbar-thumb:hover{background:#00f0ff73;box-shadow:inset 0 0 0 1px #00f0ff33,0 0 8px #00f0ff59}::-webkit-scrollbar-thumb:active{background:#00f0ffb3;box-shadow:inset 0 0 0 1px #00f0ff4d,0 0 12px #00f0ff8c}body{margin:0;min-width:320px;background-color:var(--bg-app);color:var(--text-main)}button{font:inherit}.app-shell{min-height:100vh;background:var(--bg-app);display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:58px;padding:10px 20px;border-bottom:1px solid var(--border-color);background:#090d0fd9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:9px;border:0;background:transparent;color:var(--text-bright);cursor:pointer;font-weight:800;font-size:1.05rem}.brand span{color:var(--accent-cyan);font-size:.8rem;font-weight:900;background:#00f0ff1a;padding:3px 8px;border-radius:4px;border:1px solid rgba(0,240,255,.25);text-transform:uppercase;letter-spacing:1px}.course-context{color:var(--accent-teal-bright);font-size:.85rem;font-weight:700;border-left:2px solid var(--accent-teal);padding-left:10px}.workspace{display:grid;grid-template-columns:280px minmax(0,1fr);gap:0;height:calc(100vh - 58px);min-height:620px;overflow:hidden}.sidebar{display:flex;flex-direction:column;min-width:0;min-height:0;height:calc(100vh - 58px)!important;max-height:calc(100vh - 58px)!important;overflow:hidden;border-right:1px solid var(--border-color);background:var(--bg-sidebar)}.sidebar-heading{display:flex;align-items:center;justify-content:space-between;padding:18px 16px 12px;border-bottom:1px solid rgba(255,255,255,.03)}.sidebar-heading h2{margin:0;font-size:.9rem;font-weight:800;color:var(--text-bright);letter-spacing:.5px}.sidebar-heading span{background:#ffffff0f;border-radius:12px;color:var(--text-muted);font-size:.72rem;font-weight:800;padding:2px 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strong{overflow:hidden;font-size:.78rem;font-weight:700;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}.module-row span{border-radius:4px;color:var(--text-muted);font-size:.62rem;font-weight:800;padding:2px 5px;border:1px solid rgba(255,255,255,.08)}.module-row.selected span{color:var(--accent-cyan);background:#00f0ff1a;border-color:#00f0ff40}.module-page{min-width:0;min-height:0;overflow:auto;padding:16px;background-color:var(--bg-app)}.study-canvas{display:flex;flex-direction:column;gap:0;min-height:calc(100vh - 90px);position:relative}.visualization-region{display:flex;flex-direction:column;gap:12px;min-height:0;flex:1}.jsmol-card{display:flex;flex:1;flex-direction:column;overflow:hidden;border:1px solid var(--border-color);border-radius:10px;background:var(--bg-card);box-shadow:0 8px 32px #00000059;position:relative}.jsmol-viewer{position:relative;flex:1;min-height:var(--viewer-height, 440px)!important;height:var(--viewer-height, 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