.app{min-height:100vh;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background-color:var(--color-bg-body);color:var(--color-text-primary);padding:24px;box-sizing:border-box}.app__header{margin-bottom:16px}.app__header h1{margin:0;font-size:24px;font-weight:600}.app__main{background-color:var(--color-surface);border-radius:8px;padding:16px;box-shadow:0 2px 8px #0f172a14}.toolbar{display:flex;gap:8px;margin-bottom:16px}.toolbar__button{padding:8px 14px;border-radius:6px;border:1px solid var(--color-border-subtle);background-color:var(--color-surface);color:var(--color-text-primary);font-size:14px;cursor:pointer;transition:background-color .12s ease,box-shadow .12s ease,border-color .12s ease}.toolbar__button:hover{background-color:var(--color-surface-muted);border-color:var(--color-border-strong);box-shadow:0 1px 3px #0f172a1f}.toolbar__button:active{box-shadow:none;transform:translateY(1px)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;width:100%}.grid__cell{background:var(--color-surface-muted);border:1px solid var(--color-border-subtle);border-radius:6px;min-height:350px;display:flex;align-items:center;justify-content:center}.grid__cell div{width:100%;height:100%}.grid__block{background:var(--color-surface);border:1px solid var(--color-border-strong);padding:12px;border-radius:6px;width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;color:var(--color-text-primary)}.grid__cell--droppable{border-color:var(--color-drop-target-border);background-color:var(--color-drop-target-bg)}.draggable-wrapper{cursor:grab}.draggable-wrapper:active{cursor:grabbing}.block{position:relative;background-color:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:6px;padding:12px;width:100%;height:100%;display:flex;align-items:stretch;justify-content:flex-start}.block__content{display:flex;flex-direction:column;align-items:stretch;gap:8px;width:100%;height:100%;text-align:left}.block__label{font-size:14px;font-weight:600;color:var(--color-text-primary);text-align:center}.block__delete-button{position:absolute;top:6px;right:6px;width:22px;height:22px;border-radius:999px;border:1px solid var(--color-border-subtle);background-color:var(--color-surface);color:var(--color-text-primary);font-size:14px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .12s ease,transform .12s ease,box-shadow .12s ease}.block:hover .block__delete-button{opacity:1;pointer-events:auto}.block__delete-button:hover{box-shadow:0 1px 3px #0f172a29;transform:translateY(-1px)}.block__text{padding:12px;text-align:left;font-size:14px;line-height:1.5;color:var(--color-text-primary)}:root{--color-bg-body: #f5f5f7;--color-surface: #fff;--color-surface-muted: #f9fafb;--color-border-subtle: #e5e7eb;--color-border-strong: #d1d5db;--color-text-primary: #111827;--color-drop-target-bg: #e5f3ff;--color-drop-target-border: #60a5fa}*{margin:0;padding:0;box-sizing:border-box}body{background-color:var(--color-bg-body);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}