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var(--color-border)}.handoff-share-header{display:flex;flex-direction:column;gap:var(--space-1)}.handoff-share-title{font-size:var(--text-lg);font-weight:700;color:var(--color-text-primary)}.handoff-share-subtitle{font-size:var(--text-sm);color:var(--color-text-secondary)}.handoff-share-buttons{display:flex;align-items:center;gap:var(--space-3);flex-wrap:wrap}.handoff-feedback{font-size:var(--text-xs);font-weight:600;color:var(--color-primary);min-height:18px}.handoff-card{display:flex;flex-direction:column;gap:var(--space-5);border:2px solid var(--color-primary)}.handoff-header{display:flex;flex-direction:column;gap:var(--space-2)}.handoff-badge-row{display:flex;align-items:center}.badge-handoff{background-color:var(--color-primary);color:var(--color-primary-text);font-size:var(--text-xs);font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:var(--space-1) var(--space-3);border-radius:var(--radius-sm)}.handoff-title{font-size:var(--text-2xl);font-weight:700;color:var(--color-text-primary)}.handoff-subtitle{font-size:var(--text-base);color:var(--color-text-secondary)}.handoff-cues-box{display:flex;flex-direction:column;gap:var(--space-4);padding:var(--space-2) 0}.handoff-actions{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-3);flex-wrap:wrap;padding-top:var(--space-3);border-top:1px solid var(--color-border-subtle)}.settings-dialog{background-color:var(--color-bg-surface);color:var(--color-text-primary);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-6);box-shadow:var(--shadow-lg);max-width:520px;width:92vw;margin:auto;box-sizing:border-box}.settings-dialog::backdrop{background-color:#000000a6}.settings-dialog:not([open]){display:none}.settings-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-5);border-bottom:1px solid var(--color-border-subtle);padding-bottom:var(--space-3)}.settings-title{font-size:var(--text-xl);font-weight:700;color:var(--color-text-primary)}.settings-form{display:flex;flex-direction:column;gap:var(--space-4)}.settings-fieldset{border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);padding:var(--space-3) var(--space-4) var(--space-4);background-color:var(--color-bg-subtle)}.settings-legend{font-weight:700;font-size:var(--text-xs);padding:0 var(--space-2);color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.settings-options-group{display:flex;flex-direction:column;gap:var(--space-2);margin-top:var(--space-2)}.settings-radio-label,.settings-checkbox-label{display:flex;align-items:center;gap:var(--space-3);min-height:var(--touch-target-min);padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm);cursor:pointer;font-size:var(--text-base);color:var(--color-text-primary);-webkit-user-select:none;user-select:none;transition:background-color var(--transition-fast)}.settings-radio-label:hover,.settings-checkbox-label:hover{background-color:var(--color-bg-surface)}.settings-radio-label input[type=radio],.settings-checkbox-label input[type=checkbox]{width:20px;height:20px;accent-color:var(--color-primary);cursor:pointer;flex-shrink:0}.settings-hint{font-size:var(--text-xs);color:var(--color-text-secondary);margin-top:var(--space-1);padding-left:var(--space-2);line-height:var(--leading-normal)}.settings-actions{display:flex;justify-content:flex-end;gap:var(--space-3);margin-top:var(--space-5);padding-top:var(--space-3);border-top:1px solid var(--color-border-subtle)}.study-container{display:flex;flex-direction:column;gap:var(--space-6);max-width:900px;margin:0 auto;width:100%}.study-header{display:flex;flex-direction:column;gap:var(--space-2)}.study-badge-row{display:flex;align-items:center;gap:var(--space-2)}.badge-study{background-color:var(--color-primary);color:var(--color-primary-text);font-size:var(--text-xs);font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:var(--space-1) var(--space-3);border-radius:var(--radius-sm)}.study-title{font-size:var(--text-3xl);font-weight:700;color:var(--color-text-primary)}.study-subtitle{font-size:var(--text-base);color:var(--color-text-secondary)}.study-grid{display:grid;grid-template-columns:1fr;gap:var(--space-6)}@media (min-width: 768px){.study-grid{grid-template-columns:1fr 1fr}}.study-card{background-color:var(--color-bg-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-5);display:flex;flex-direction:column;gap:var(--space-4);box-shadow:var(--shadow-sm)}.stopwatch-card{align-items:center;justify-content:center;text-align:center}.stopwatch-title{font-size:var(--text-sm);font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary)}.stopwatch-display{font-family:var(--font-mono);font-size:3.5rem;font-weight:700;color:var(--color-text-primary);letter-spacing:.02em;margin:var(--space-3) 0;font-variant-numeric:tabular-nums}.stopwatch-controls{display:flex;gap:var(--space-3);flex-wrap:wrap;justify-content:center}.study-form{display:flex;flex-direction:column;gap:var(--space-4)}.study-field-group{display:flex;flex-direction:column;gap:var(--space-1)}.study-label{font-size:var(--text-sm);font-weight:600;color:var(--color-text-primary)}.study-input{padding:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--text-base);background-color:var(--color-bg-surface);color:var(--color-text-primary);min-height:var(--touch-target-min)}.study-input:focus{outline:var(--focus-ring);outline-offset:var(--focus-offset)}.study-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-4)}.stat-box{background-color:var(--color-bg-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-1)}.stat-label{font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text-secondary)}.stat-value{font-size:var(--text-2xl);font-weight:700;color:var(--color-primary)}.stat-sub{font-size:var(--text-xs);color:var(--color-text-muted)}.study-table-wrapper{overflow-x:auto;border:1px solid var(--color-border);border-radius:var(--radius-md);background-color:var(--color-bg-surface)}.study-table{width:100%;border-collapse:collapse;text-align:left;font-size:var(--text-sm)}.study-table th,.study-table td{padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-border-subtle)}.study-table th{background-color:var(--color-bg-subtle);color:var(--color-text-primary);font-weight:700}.study-table td{color:var(--color-text-secondary)}.study-table tr:hover td{background-color:var(--color-bg-subtle)}.study-actions-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--space-3);margin-top:var(--space-2)}