.app{background:var(--bg-primary);height:100vh;color:var(--text-primary);flex-direction:column;transition:background-color .3s,color .3s;display:flex}.header{background:var(--bg-secondary);border-bottom:1px solid var(--border);box-shadow:var(--shadow);flex-shrink:0;justify-content:space-between;align-items:center;padding:10px 20px;display:flex}.header-left{align-items:center;gap:12px;display:flex}.app-title{color:var(--accent);align-items:center;gap:8px;font-size:1.2rem;font-weight:700;display:flex}.template-name{background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-primary);border-radius:8px;min-width:220px;padding:8px 14px;font-size:.9rem;transition:border-color .2s,box-shadow .2s}.template-name:focus{border-color:var(--accent);box-shadow:0 0 0 3px 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var(--accent-light)}.header-actions{gap:8px;display:flex}.header-actions button,.header-actions .dropdown-trigger{background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-primary);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:8px 12px;font-size:.85rem;font-weight:500;transition:all .2s;display:flex}.header-actions button:hover:not(:disabled){background:var(--accent);border-color:var(--accent);color:#fff}.header-actions button:disabled{opacity:.4;cursor:not-allowed}.header-actions button .material-icons{color:var(--text-primary)}.header-actions button:hover:not(:disabled) .material-icons{color:#fff}.header-actions button:disabled .material-icons{color:var(--text-muted)}.history-buttons{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;gap:2px;display:flex;overflow:hidden}.history-buttons button{background:0 0;border:none;border-radius:0;padding:8px 10px}.history-buttons button:first-child{border-right:1px solid 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