:root{--radius: .5rem;--border: 1px solid #e5e7eb;--bg: #f8fafc;--bg-card: #fff;--fg: #11181c;--fg-muted: #6b7280;--accent: #2563eb;--accent-hover: #1d4ed8;--shadow: 0 2px 8px 0 rgba(0,0,0,.04)}body{font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--fg);margin:0;padding:0;padding-inline:2rem}h1,h2,h3,h4{font-weight:600;margin-top:2rem;margin-bottom:1rem}h2{font-size:1.5rem;padding-bottom:.25em}h3{font-size:1.15rem;color:var(--fg-muted)}table{width:100%;border-collapse:collapse;background:var(--bg-card);box-shadow:var(--shadow);border-radius:var(--radius);margin-bottom:2rem}th,td{padding:.75em 1em;border-bottom:var(--border);text-align:left}th{background:var(--bg);color:var(--fg-muted);font-weight:500}tr:last-child td{border-bottom:none}input,select,textarea,button{font-family:inherit;font-size:1rem;border-radius:var(--radius);border:var(--border);padding:.5em .75em;background:#fff;color:var(--fg);margin-top:.25em;margin-bottom:1em;box-sizing:border-box}input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);border-color:var(--accent)}button{background:var(--accent);color:#fff;border:none;cursor:pointer;transition:background .15s}button:hover,button:focus{background:var(--accent-hover)}label{font-weight:500;margin-bottom:.25em;display:block}.card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:2em;margin-bottom:2em}@media (max-width: 600px){table,thead,tbody,th,td,tr{display:block}th,td{padding:.5em}}.error-message{color:red}.study-table-top{margin-bottom:2em}.group-heading{margin-top:1.5em}.label-cell{font-weight:700;padding-right:1em}.nav-bar{padding:1rem;background:#f5f5f5;border-bottom:1px solid #ddd;position:sticky;top:0;z-index:100}.form-container{max-width:600px;margin:0 auto;padding:1.5rem 1rem;display:flex;flex-direction:column;gap:.3rem}.form-label{font-weight:500;margin-bottom:.1rem}.form-input{padding:.18rem .5rem;font-size:1rem;border:1px solid #bbb;border-radius:3px;width:100%;box-sizing:border-box}.form-button{padding:.3rem 1.1rem;font-size:1rem;border-radius:3px;background:#2563eb;color:#fff;border:none;cursor:pointer;margin-top:.4rem;text-decoration:none}.group-heading{font-size:1.05rem;font-weight:600;margin:.4rem 0 .15rem}.data-table{width:100%;border-collapse:collapse;background:var(--bg-card);box-shadow:var(--shadow);border-radius:var(--radius);margin-bottom:2rem}.data-table-cell{padding:.5em .75em;border-bottom:var(--border);text-align:left;font-size:.98rem}.data-table th{background:var(--bg);color:var(--fg-muted);font-weight:500}.data-table tr:last-child td{border-bottom:none}.header-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;border-bottom:var(--border);padding-bottom:.25em}.sticky-header{position:sticky;top:3.5rem;z-index:10;background:var(--bg);padding:0;box-shadow:none}.header-row h2,.header-row button,.header-row .cancel-button{line-height:1.5;vertical-align:middle}.cancel-button{background:transparent;color:var(--fg-muted);border:1px solid #bbb;margin-left:.75rem;transition:background .15s,color .15s;padding:.3rem 1.1rem;font-size:1rem;border-radius:3px;height:auto;box-sizing:border-box;cursor:pointer}.cancel-button:hover,.cancel-button:focus{background:#f3f4f6;color:#11181c}.floating-edit-btn{position:fixed;top:.3rem;right:2rem;z-index:200;box-shadow:0 2px 8px #0000001a;border-radius:3px;padding:.5rem 1.2rem;font-size:1rem;display:flex;align-items:center;gap:.5rem}