.ppa-assignment-editor-container{background:#f0f0f0;min-height:100vh;padding:20px}.ppa-editor-header{background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.06);margin-bottom:20px;padding:24px}.ant-card{border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,.08);margin-bottom:16px}.ant-tabs{background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.06);padding:24px}
